:root{--color-primary: #6366f1;--color-primary-light: #818cf8;--color-primary-dark: #4f46e5;--color-primary-glow: rgba(99, 102, 241, .4);--color-secondary: #06b6d4;--color-secondary-light: #22d3ee;--color-secondary-dark: #0891b2;--color-secondary-glow: rgba(6, 182, 212, .4);--color-accent: #f472b6;--color-accent-light: #f9a8d4;--color-accent-dark: #ec4899;--color-accent-glow: rgba(244, 114, 182, .4);--color-success: #10b981;--color-success-glow: rgba(16, 185, 129, .3);--color-warning: #f59e0b;--color-warning-glow: rgba(245, 158, 11, .3);--color-error: #ef4444;--color-error-glow: rgba(239, 68, 68, .3);--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-bg-elevated: rgba(30, 41, 59, .8);--color-text-primary: #ffffff;--color-text-secondary: #f1f5f9;--color-text-muted: #cbd5e1;--color-text-inverse: #f8fafc;--color-border: rgba(148, 163, 184, .2);--color-border-light: rgba(148, 163, 184, .1);--color-border-focus: rgba(99, 102, 241, .5);--font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display: "Cal Sans", "Inter", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 3.75rem;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .4), 0 2px 4px -2px rgb(0 0 0 / .4);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .4), 0 4px 6px -4px rgb(0 0 0 / .4);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .5), 0 8px 10px -6px rgb(0 0 0 / .5);--shadow-glow: 0 0 40px -10px var(--color-primary-glow);--shadow-glow-secondary: 0 0 40px -10px var(--color-secondary-glow);--glass-bg: rgba(30, 41, 59, .6);--glass-bg-light: rgba(30, 41, 59, .4);--glass-border: rgba(255, 255, 255, .1);--glass-blur: blur(20px);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-3xl: 2rem;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--transition-bounce: .5s cubic-bezier(.68, -.55, .265, 1.55);--focus-ring: 0 0 0 3px var(--color-primary-glow);--gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);--gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);--gradient-dark: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);--gradient-mesh: radial-gradient(ellipse at top, var(--color-primary-glow) 0%, transparent 50%), radial-gradient(ellipse at bottom right, var(--color-secondary-glow) 0%, transparent 50%), radial-gradient(ellipse at bottom left, var(--color-accent-glow) 0%, transparent 50%);--direction: ltr}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--line-height-normal);color:var(--color-text-primary);background:var(--color-bg-primary);min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;inset:0;background:var(--gradient-mesh);pointer-events:none;z-index:-1;animation:meshMove 20s ease-in-out infinite}@keyframes meshMove{0%,to{opacity:.5;transform:scale(1)}50%{opacity:.8;transform:scale(1.1)}}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:var(--line-height-tight);color:var(--color-text-primary);letter-spacing:-.02em}h1{font-size:var(--text-5xl)}h2{font-size:var(--text-4xl)}h3{font-size:var(--text-3xl)}h4{font-size:var(--text-2xl)}h5{font-size:var(--text-xl)}h6{font-size:var(--text-lg)}p{margin-bottom:var(--space-4);color:var(--color-text-secondary)}a{color:var(--color-primary-light);text-decoration:none;transition:all var(--transition-fast);position:relative}a:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--gradient-primary);transition:width var(--transition-normal)}a:hover{color:var(--color-text-primary)}a:hover:after{width:100%}a:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}button{font-family:inherit;cursor:pointer;border:none;background:none;transition:all var(--transition-fast)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-size:var(--text-base);font-weight:600;border-radius:var(--radius-xl);transition:all var(--transition-normal);position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left var(--transition-slow)}.btn:hover:before{left:100%}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px -3px var(--color-primary-glow)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px -5px var(--color-primary-glow)}.btn-secondary{background:var(--glass-bg);color:var(--color-text-primary);border:1px solid var(--glass-border);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur)}.btn-secondary:hover{background:var(--glass-bg-light);border-color:var(--color-primary-light);transform:translateY(-2px)}.btn-accent{background:var(--gradient-accent);color:#fff;box-shadow:0 4px 15px -3px var(--color-accent-glow)}.btn-accent:hover{transform:translateY(-2px);box-shadow:0 8px 25px -5px var(--color-accent-glow)}.btn:focus-visible{outline:none;box-shadow:var(--focus-ring)}input,select,textarea{font-family:inherit;font-size:inherit;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:var(--space-3) var(--space-4);color:var(--color-text-primary);transition:all var(--transition-fast)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary-light);box-shadow:0 0 0 3px var(--color-primary-glow)}input::placeholder{color:var(--color-text-muted)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-4)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.glass{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-2xl)}.glass-card{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-2xl);padding:var(--space-6);transition:all var(--transition-normal)}.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl),var(--shadow-glow);border-color:var(--color-primary-light)}.gradient-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.gradient-text-accent{background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}@keyframes fadeInScale{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fadeIn{animation:fadeIn .6s ease-out forwards}.animate-fadeInScale{animation:fadeInScale .5s ease-out forwards}.animate-slideInLeft{animation:slideInLeft .5s ease-out forwards}.animate-slideInRight{animation:slideInRight .5s ease-out forwards}.animate-float{animation:float 3s ease-in-out infinite}.stagger-1{animation-delay:.1s}.stagger-2{animation-delay:.2s}.stagger-3{animation-delay:.3s}.stagger-4{animation-delay:.4s}.stagger-5{animation-delay:.5s}.math-display{font-family:var(--font-mono);font-size:var(--text-lg)}.fraction{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;font-family:var(--font-mono);font-weight:600}.fraction .numerator,.fraction .denominator{padding:0 var(--space-2)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb{background:var(--color-bg-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-primary-light)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}body:before{animation:none}}[dir=rtl]{--direction: rtl}[dir=rtl] .rtl-flip{transform:scaleX(-1)}@media(max-width:768px){h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}.glass-card{padding:var(--space-4)}}.navigation{display:flex;align-items:center;gap:var(--space-8)}.nav-list{display:flex;list-style:none;gap:var(--space-2);align-items:center}.nav-link{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);color:var(--color-text-secondary);font-weight:500;font-size:var(--text-sm);border-radius:var(--radius-lg);transition:all var(--transition-fast);position:relative;text-decoration:none;background:transparent;border:none;cursor:pointer;white-space:nowrap}.nav-link:after{display:none}.nav-link:hover{color:var(--color-text-primary);background:var(--glass-bg-light);text-decoration:none}.nav-link.active{color:var(--color-text-primary);background:var(--gradient-primary);box-shadow:0 4px 15px -3px var(--color-primary-glow)}.nav-link:focus-visible{outline:none;box-shadow:var(--focus-ring)}.nav-home{background:var(--glass-bg);border:1px solid var(--glass-border)}.nav-back{color:var(--color-text-muted);font-size:var(--text-xs)}.nav-back:hover{color:var(--color-primary)}.nav-dropdown{position:relative}.dropdown-toggle{display:flex;align-items:center;gap:var(--space-2)}.dropdown-toggle.open{background:var(--glass-bg-light);color:var(--color-text-primary)}.dropdown-menu{position:absolute;top:calc(100% + var(--space-2));left:0;min-width:220px;max-height:400px;overflow-y:auto;padding:var(--space-2);list-style:none;border-radius:var(--radius-xl);z-index:1000;animation:dropdownIn .2s ease-out;box-shadow:0 10px 40px -10px #0000004d,0 0 0 1px var(--glass-border)}@keyframes dropdownIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.dropdown-item{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);color:var(--color-text-secondary);text-decoration:none;border-radius:var(--radius-lg);font-size:var(--text-sm);transition:all var(--transition-fast);cursor:pointer}.dropdown-item:hover{background:var(--glass-bg-light);color:var(--color-text-primary)}.dropdown-item.active{background:var(--gradient-primary);color:#fff}.dropdown-item.disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.dropdown-item.disabled small{font-size:var(--text-xs);opacity:.7;margin-left:auto}.nav-separator{color:var(--color-text-muted);opacity:.3;padding:0 var(--space-1);font-weight:300;-webkit-user-select:none;user-select:none}.nav-section{flex-direction:column;gap:0;font-size:var(--text-xs)}.nav-link.disabled{opacity:.5;pointer-events:none;cursor:not-allowed;position:relative}.coming-soon-badge{font-size:.6rem;background:var(--color-warning);color:var(--color-dark);padding:.1rem .3rem;border-radius:var(--radius-sm);margin-left:var(--space-1);text-transform:uppercase;font-weight:600;letter-spacing:.05em}.language-selector{display:flex;gap:var(--space-1);padding:var(--space-1);background:var(--glass-bg);border-radius:var(--radius-xl);border:1px solid var(--glass-border)}.language-selector button{padding:var(--space-2) var(--space-3);font-size:var(--text-xs);font-weight:600;color:var(--color-text-muted);background:transparent;border:none;border-radius:var(--radius-lg);transition:all var(--transition-fast);cursor:pointer;text-transform:uppercase;letter-spacing:.05em}.language-selector button:hover{color:var(--color-text-primary);background:var(--glass-bg-light)}.language-selector button.active{color:#fff;background:var(--gradient-primary);box-shadow:0 2px 8px -2px var(--color-primary-glow)}.language-selector button:focus-visible{outline:none;box-shadow:var(--focus-ring)}@media(max-width:900px){.navigation{flex-direction:column;gap:var(--space-4)}.nav-list{flex-wrap:wrap;justify-content:center}.nav-link{padding:var(--space-2) var(--space-3);font-size:var(--text-xs)}.dropdown-menu{position:fixed;left:50%;transform:translate(-50%);top:auto;bottom:80px;max-width:90vw}@keyframes dropdownIn{0%{opacity:0;transform:translate(-50%) translateY(8px)}to{opacity:1;transform:translate(-50%) translateY(0)}}}@media(max-width:640px){.navigation{width:100%}.nav-list{width:100%;justify-content:space-around}.nav-link{padding:var(--space-2)}}.layout{min-height:100vh;display:flex;flex-direction:column;position:relative}.layout-header{position:sticky;top:0;z-index:100;background:#0f172acc;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border)}.header-content{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) var(--space-6);max-width:1400px;margin:0 auto;width:100%}.logo{display:flex;align-items:center;gap:var(--space-3);text-decoration:none}.logo-icon{font-size:var(--text-3xl);font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:float 3s ease-in-out infinite}.logo-text{font-size:var(--text-xl);font-weight:700;color:var(--color-text-primary);letter-spacing:-.02em}.layout-main{flex:1;padding:var(--space-8) 0;position:relative}.layout-footer{background:#0f172ae6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid var(--glass-border);padding:var(--space-8) 0;margin-top:auto}.layout-footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--space-4);max-width:1400px;padding:0 var(--space-6)}.layout-footer p{color:var(--color-text-muted);font-size:var(--text-sm);margin:0}.footer-nav{display:flex;gap:var(--space-6)}.footer-nav a{color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:500;text-decoration:none;transition:all var(--transition-fast);position:relative}.footer-nav a:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--gradient-primary);transition:width var(--transition-fast)}.footer-nav a:hover{color:var(--color-text-primary)}.footer-nav a:hover:after{width:100%}@media(max-width:768px){.header-content{padding:var(--space-3) var(--space-4)}.logo-text{display:none}.layout-footer .container{flex-direction:column;text-align:center;padding:0 var(--space-4)}.footer-nav{gap:var(--space-4)}}.subject-card{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-5);text-decoration:none;color:inherit;cursor:pointer;position:relative;overflow:hidden}.subject-card:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left var(--transition-slow)}.subject-card:hover:before{left:100%}.subject-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl),var(--shadow-glow)}.subject-card.disabled{opacity:.6;cursor:not-allowed}.subject-card.disabled:hover{transform:none;box-shadow:none}.subject-card.disabled:before{display:none}.subject-card-icon{display:flex;align-items:center;justify-content:center;width:60px;height:60px;border-radius:var(--radius-xl);font-size:var(--text-2xl);flex-shrink:0;box-shadow:var(--shadow-md)}.subject-card-content{flex:1;min-width:0}.subject-card-title{font-size:var(--text-lg);font-weight:600;color:var(--color-text-primary);margin:0 0 var(--space-1) 0}.subject-card-description{font-size:var(--text-sm);color:var(--color-text-muted);margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.subject-card-badge{background:var(--color-warning);color:var(--color-bg-primary);font-size:var(--text-xs);font-weight:600;padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em}.subject-card-arrow{font-size:var(--text-xl);color:var(--color-text-muted);transition:transform var(--transition-fast),color var(--transition-fast)}.subject-card:hover .subject-card-arrow{transform:translate(4px);color:var(--color-primary-light)}@media(max-width:768px){.subject-card{padding:var(--space-4)}.subject-card-icon{width:50px;height:50px;font-size:var(--text-xl)}.subject-card-title{font-size:var(--text-base)}}.subjects-page{padding:var(--space-8) 0;min-height:calc(100vh - 200px)}.subjects-header{text-align:center;margin-bottom:var(--space-12);animation:fadeIn .6s ease-out}.subjects-header h1{font-size:var(--text-5xl);margin-bottom:var(--space-4);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subjects-subtitle{font-size:var(--text-xl);color:var(--color-text-secondary);max-width:600px;margin:0 auto}.subjects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--space-6);max-width:800px;margin:0 auto var(--space-12)}.subjects-grid>*{animation:fadeIn .6s ease-out;animation-fill-mode:both}.subjects-grid>*:nth-child(1){animation-delay:.1s}.subjects-grid>*:nth-child(2){animation-delay:.2s}.subjects-info{max-width:800px;margin:0 auto;padding:var(--space-8);text-align:center;animation:fadeIn .6s ease-out .3s;animation-fill-mode:both}.subjects-info h2{font-size:var(--text-2xl);margin-bottom:var(--space-4);color:var(--color-text-primary)}.subjects-info p{font-size:var(--text-base);color:var(--color-text-secondary);line-height:var(--line-height-relaxed);margin:0}@media(max-width:768px){.subjects-header h1{font-size:var(--text-4xl)}.subjects-subtitle{font-size:var(--text-lg)}.subjects-grid{grid-template-columns:1fr}.subjects-info{padding:var(--space-6)}}.courses-page{padding:var(--space-8) 0;min-height:calc(100vh - 200px)}.courses-header{text-align:center;margin-bottom:var(--space-10);animation:fadeIn .6s ease-out}.courses-breadcrumb{margin-bottom:var(--space-4)}.courses-breadcrumb a{font-size:var(--text-sm);color:var(--color-text-muted);text-decoration:none;display:inline-flex;align-items:center;gap:var(--space-2)}.courses-breadcrumb a:before{content:"←"}.courses-breadcrumb a:hover{color:var(--color-primary-light)}.courses-header h1{font-size:var(--text-4xl);margin-bottom:var(--space-3);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.courses-subtitle{font-size:var(--text-lg);color:var(--color-text-secondary);max-width:600px;margin:0 auto}.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--space-4);max-width:1000px;margin:0 auto}.course-item{animation:fadeIn .6s ease-out;animation-fill-mode:both}@media(max-width:768px){.courses-header h1{font-size:var(--text-3xl)}.courses-subtitle{font-size:var(--text-base)}.courses-grid{grid-template-columns:1fr}}.topics-page{padding:var(--space-8) 0;min-height:calc(100vh - 200px)}.topics-header{text-align:center;margin-bottom:var(--space-10);animation:fadeIn .6s ease-out}.topics-breadcrumb{margin-bottom:var(--space-4);display:flex;align-items:center;justify-content:center;gap:var(--space-2);flex-wrap:wrap}.topics-breadcrumb a{font-size:var(--text-sm);color:var(--color-text-muted);text-decoration:none}.topics-breadcrumb a:hover{color:var(--color-primary-light)}.topics-breadcrumb .separator{color:var(--color-text-muted);font-size:var(--text-sm)}.topics-header h1{font-size:var(--text-4xl);margin-bottom:var(--space-3);color:var(--course-color, var(--color-primary))}.topics-subtitle{font-size:var(--text-lg);color:var(--color-text-secondary);max-width:600px;margin:0 auto}.topics-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--space-4);max-width:1000px;margin:0 auto}.topic-item{animation:fadeIn .6s ease-out;animation-fill-mode:both}@media(max-width:768px){.topics-header h1{font-size:var(--text-3xl)}.topics-subtitle{font-size:var(--text-base)}.topics-grid{grid-template-columns:1fr}}.number-line-lab{display:flex;flex-direction:column;gap:var(--space-6)}.lab-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-6);padding:var(--space-6);border-radius:var(--radius-lg)}.control-group{display:flex;flex-direction:column;gap:var(--space-2)}.control-group label{font-weight:600;color:var(--color-text-primary);font-size:var(--text-sm)}.control-group input[type=range]{width:100%;height:8px;-webkit-appearance:none;appearance:none;background:var(--color-bg-tertiary);border-radius:var(--radius-full);cursor:pointer}.control-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;background:var(--color-primary);border-radius:50%;cursor:pointer;transition:transform var(--transition-fast)}.control-group input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.1)}.control-group input[type=range]::-moz-range-thumb{width:24px;height:24px;background:var(--color-primary);border-radius:50%;cursor:pointer;border:none}.control-group output{font-size:var(--text-xl);font-weight:700;color:var(--color-primary);text-align:center}.canvas-container{padding:var(--space-6);border-radius:var(--radius-lg);display:flex;justify-content:center;overflow-x:auto}.canvas-container canvas{max-width:100%;height:auto}.number-line-lab .fraction-info{display:flex;flex-wrap:wrap;gap:var(--space-6);padding:var(--space-6);border-radius:var(--radius-lg);justify-content:center}.number-line-lab .info-item{display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-lg)}.number-line-lab .info-label{font-weight:700;color:var(--color-text-secondary, #94a3b8)}.number-line-lab .fraction-display{display:inline-flex;flex-direction:column;align-items:center;font-family:var(--font-mono);font-size:var(--text-xl);font-weight:700;color:var(--color-primary)}.number-line-lab .fraction-display .numerator{border-bottom:2px solid currentColor;padding:0 var(--space-2)}.number-line-lab .fraction-display .denominator{padding:0 var(--space-2)}@media(max-width:640px){.number-line-lab .lab-controls{grid-template-columns:1fr}.number-line-lab .canvas-container{padding:var(--space-4)}.number-line-lab .fraction-info{flex-direction:column;align-items:center}}.area-lab{display:flex;flex-direction:column;gap:var(--space-6)}.area-lab .lab-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-6);padding:var(--space-6);border-radius:var(--radius-lg)}.area-lab .control-group{display:flex;flex-direction:column;gap:var(--space-2)}.area-lab .control-group label{font-weight:600;color:var(--color-text-primary);font-size:var(--text-sm)}.area-lab .control-group input[type=range]{width:100%;height:8px;-webkit-appearance:none;appearance:none;background:var(--color-bg-tertiary);border-radius:var(--radius-full);cursor:pointer}.area-lab .control-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;background:var(--color-secondary);border-radius:50%;cursor:pointer;transition:transform var(--transition-fast)}.area-lab .control-group input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.1)}.area-lab .control-group output{font-size:var(--text-xl);font-weight:700;color:var(--color-secondary);text-align:center}.area-lab .canvas-container{padding:var(--space-6);border-radius:var(--radius-lg);display:flex;justify-content:center;overflow-x:auto}.area-lab .canvas-container canvas{max-width:100%;height:auto;border-radius:var(--radius-md)}.area-lab .fraction-info{display:flex;flex-wrap:wrap;gap:var(--space-6);padding:var(--space-6);border-radius:var(--radius-lg);justify-content:center}.area-lab .info-item{display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-lg)}.area-lab .info-label{font-weight:700;color:#1e293b}.area-lab .fraction-display{display:inline-flex;flex-direction:column;align-items:center;font-family:var(--font-mono);font-size:var(--text-xl);font-weight:700;color:var(--color-secondary)}.area-lab .fraction-display .numerator{border-bottom:2px solid currentColor;padding:0 var(--space-2)}.area-lab .fraction-display .denominator{padding:0 var(--space-2)}.area-lab .decimal-value{font-family:var(--font-mono);font-size:var(--text-xl);font-weight:700;color:var(--color-primary)}.area-explanation{padding:var(--space-6);border-radius:var(--radius-lg)}.area-explanation h4{margin-bottom:var(--space-3);color:var(--color-text-primary)}.area-explanation p{margin-bottom:var(--space-2);color:#1e293b;font-weight:500}.area-explanation p:last-child{margin-bottom:0}@media(max-width:640px){.area-lab .lab-controls{grid-template-columns:1fr}.area-lab .fraction-info{flex-direction:column;align-items:center}}.equivalence-lab{display:flex;flex-direction:column;gap:var(--space-6)}.equivalence-lab .lab-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-6);padding:var(--space-6);border-radius:var(--radius-lg)}.equivalence-lab .control-group{display:flex;flex-direction:column;gap:var(--space-2)}.equivalence-lab .control-group label{font-weight:600;color:var(--color-text-primary);font-size:var(--text-sm)}.equivalence-lab .control-group input[type=range]{width:100%;height:8px;-webkit-appearance:none;appearance:none;background:var(--color-bg-tertiary);border-radius:var(--radius-full);cursor:pointer}.equivalence-lab .control-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;background:var(--color-accent);border-radius:50%;cursor:pointer;transition:transform var(--transition-fast)}.equivalence-lab .control-group input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.1)}.equivalence-lab .control-group output{font-size:var(--text-xl);font-weight:700;color:var(--color-accent);text-align:center}.equivalence-lab .canvas-container{padding:var(--space-6);border-radius:var(--radius-lg);display:flex;justify-content:center;overflow-x:auto}.equivalence-lab .canvas-container canvas{max-width:100%;height:auto;border-radius:var(--radius-md)}.equivalence-info{padding:var(--space-6);border-radius:var(--radius-lg)}.equivalence-formula{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;margin-bottom:var(--space-6)}.equivalence-lab .fraction-step{padding:var(--space-4);background:var(--color-bg-tertiary);border-radius:var(--radius-lg)}.equivalence-lab .fraction-step.result{background:#2563eb1a;border:2px solid var(--color-primary)}.equivalence-lab .operator{font-size:var(--text-2xl);font-weight:800;color:var(--color-accent-light, #a5b4fc)}.equivalence-lab .fraction-display{display:inline-flex;flex-direction:column;align-items:center;font-family:var(--font-mono);font-size:var(--text-2xl);font-weight:700;color:var(--color-primary)}.equivalence-lab .fraction-display .numerator{border-bottom:3px solid currentColor;padding:0 var(--space-3)}.equivalence-lab .fraction-display .denominator{padding:0 var(--space-3)}.equivalence-lab .simplified-form{text-align:center;padding-top:var(--space-4);border-top:1px solid var(--color-border)}.equivalence-lab .simplified-form p{color:var(--color-text-secondary, #94a3b8);margin-bottom:var(--space-2);font-weight:600}.equivalence-lab .simplified-form .fraction-display{color:var(--color-success)}.equivalence-lab .equivalence-explanation{padding:var(--space-6);border-radius:var(--radius-lg)}.equivalence-lab .equivalence-explanation h4{margin-bottom:var(--space-3);color:var(--color-text-primary)}.equivalence-lab .equivalence-explanation p{margin-bottom:var(--space-2);color:var(--color-text-secondary, #94a3b8);font-weight:500}.equivalence-lab .equivalence-explanation p:last-child{margin-bottom:0}@media(max-width:640px){.equivalence-lab .lab-controls{grid-template-columns:1fr}.equivalence-lab .equivalence-formula{flex-direction:column;gap:var(--space-2)}.equivalence-lab .operator{transform:rotate(90deg)}}.pizza-lab{display:flex;flex-direction:column;gap:var(--space-6)}.pizza-canvas{display:flex;justify-content:center;padding:var(--space-6);background:linear-gradient(135deg,#fef3c7,#fde68a);border:3px solid #F59E0B}.pizza-info{text-align:center;padding:var(--space-6);background:linear-gradient(135deg,#fee2e2,#fecaca);border:2px solid #EF4444}.pizza-fraction-display{display:flex;align-items:center;justify-content:center;gap:var(--space-6);margin-bottom:var(--space-4)}.big-fraction{display:flex;flex-direction:column;align-items:center;font-size:var(--text-3xl);font-weight:700;color:#b91c1c}.big-fraction .num,.big-fraction .den{line-height:1.2}.big-fraction .line{width:60px;height:4px;background:#b91c1c;border-radius:2px}.equals{font-size:var(--text-3xl);font-weight:700;color:var(--color-text-secondary)}.percentage{font-size:var(--text-4xl);font-weight:800;background:linear-gradient(135deg,#ef4444,#f97316);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.pizza-text{font-size:var(--text-lg);color:#1e293b;margin:0;font-weight:500}@media(max-width:640px){.pizza-canvas canvas{width:300px;height:300px}.big-fraction{font-size:var(--text-2xl)}.percentage{font-size:var(--text-3xl)}}.operations-lab{display:flex;flex-direction:column;gap:var(--space-6)}.operations-controls{display:grid;grid-template-columns:1fr auto 1fr;gap:var(--space-4);align-items:start}.fraction-control{padding:var(--space-4)}.fraction-control h4{margin:0 0 var(--space-3);color:var(--color-text-primary);font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.05em}.operation-selector{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-4);align-self:center}.op-btn{padding:var(--space-3) var(--space-4);font-size:var(--text-lg);font-weight:700;border:3px solid transparent;border-radius:var(--radius-lg);transition:all var(--transition-fast)}.op-btn.add{background:#d1fae5;color:#047857;border-color:#6ee7b7}.op-btn.add:hover,.op-btn.add.active{background:#059669;color:#fff;border-color:#047857;transform:scale(1.05)}.op-btn.subtract{background:#fee2e2;color:#b91c1c;border-color:#fca5a5}.op-btn.subtract:hover,.op-btn.subtract.active{background:#dc2626;color:#fff;border-color:#b91c1c;transform:scale(1.05)}.operations-canvas{display:flex;justify-content:center;padding:var(--space-6);background:linear-gradient(135deg,#f1f5f9,#e2e8f0)}.operations-steps{padding:var(--space-5);background:linear-gradient(135deg,#eef2ff,#e0e7ff);border:2px solid #818CF8}.operations-steps h4{margin:0 0 var(--space-4);color:#4338ca}.operations-steps ol{margin:0;padding-left:var(--space-6);display:flex;flex-direction:column;gap:var(--space-2)}.operations-steps li{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) 0;border-bottom:1px dashed #C7D2FE}.operations-steps li:last-child{border-bottom:none}.step-label{font-family:var(--font-mono);color:#334155;font-weight:500}.step-result{font-weight:700;color:#4338ca}.step-result.final{font-size:var(--text-lg);color:#059669}@media(max-width:768px){.operations-controls{grid-template-columns:1fr}.operation-selector{flex-direction:row;justify-content:center}}.comparator-lab{display:flex;flex-direction:column;gap:var(--space-6)}.comparator-controls{display:grid;grid-template-columns:1fr auto 1fr;gap:var(--space-4);align-items:center}.fraction-card{padding:var(--space-5);text-align:center}.fraction-card h4{margin:0 0 var(--space-3);font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.05em}.fraction-card.blue{background:linear-gradient(135deg,#dbeafe,#bfdbfe);border:2px solid #3B82F6}.fraction-card.blue h4{color:#1d4ed8}.fraction-card.purple{background:linear-gradient(135deg,#ede9fe,#ddd6fe);border:2px solid #8B5CF6}.fraction-card.purple h4{color:#6d28d9}.big-fraction-display{display:flex;flex-direction:column;align-items:center;margin-bottom:var(--space-4)}.big-fraction-display .num,.big-fraction-display .den{font-size:var(--text-4xl);font-weight:800;line-height:1.1}.fraction-card.blue .big-fraction-display .num,.fraction-card.blue .big-fraction-display .den{color:#1d4ed8}.fraction-card.purple .big-fraction-display .num,.fraction-card.purple .big-fraction-display .den{color:#6d28d9}.big-fraction-display .line{width:80px;height:5px;background:currentColor;border-radius:2px;margin:var(--space-1) 0}.comparison-symbol{display:flex;align-items:center;justify-content:center;padding:var(--space-6)}.comparison-symbol .symbol{font-size:var(--text-5xl);font-weight:900;transition:all var(--transition-normal)}.comparison-symbol .symbol.greater{color:#3b82f6}.comparison-symbol .symbol.less{color:#8b5cf6}.comparison-symbol .symbol.equal{color:#059669}.comparator-result{text-align:center;padding:var(--space-5);background:linear-gradient(135deg,#f0fdf4,#dcfce7);border:2px solid #22C55E}.result-message{font-size:var(--text-xl);font-weight:700;color:#166534;margin:0 0 var(--space-2)}.result-explanation{color:#334155;margin:0;font-family:var(--font-mono);font-weight:500}@media(max-width:768px){.comparator-controls{grid-template-columns:1fr}.comparison-symbol{padding:var(--space-3)}.comparison-symbol .symbol,.big-fraction-display .num,.big-fraction-display .den{font-size:var(--text-3xl)}}.accessibility-page{padding:var(--space-8) 0}.page-header{text-align:center;margin-bottom:var(--space-10)}.page-header h1{margin-bottom:var(--space-4)}.page-description{font-size:var(--text-lg);color:var(--color-text-secondary);max-width:700px;margin:0 auto}.dua-section,.wcag-section,.multilingual-section,.keyboard-section,.contact-section{padding:var(--space-8);border-radius:var(--radius-xl);margin-bottom:var(--space-6)}.dua-section h2,.wcag-section h2,.multilingual-section h2,.keyboard-section h2,.contact-section h2{margin-bottom:var(--space-4);color:var(--color-text-primary)}.dua-section>p,.wcag-section>p,.multilingual-section>p,.contact-section>p{color:var(--color-text-secondary);margin-bottom:var(--space-6);line-height:var(--line-height-relaxed)}.dua-principles{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-6);margin-top:var(--space-6)}.principle-card{padding:var(--space-6);background:var(--color-bg-primary);border-radius:var(--radius-lg);border:1px solid var(--color-border)}.principle-icon{font-size:2.5rem;margin-bottom:var(--space-3)}.principle-card h3{margin-bottom:var(--space-3);color:var(--color-primary)}.principle-card ul{list-style:none;padding:0}.principle-card li{padding:var(--space-2) 0;padding-left:var(--space-5);position:relative;color:var(--color-text-secondary);font-size:var(--text-sm)}.principle-card li:before{content:"•";position:absolute;left:var(--space-2);color:var(--color-primary);font-weight:700}.wcag-checklist{display:flex;flex-direction:column;gap:var(--space-3)}.checklist-item{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-4);background:var(--color-bg-primary);border-radius:var(--radius-lg)}.check-icon{color:var(--color-success);font-weight:700;flex-shrink:0}.feature-list{list-style:none;padding:0;display:grid;gap:var(--space-3)}.feature-list li{padding:var(--space-3) var(--space-4);background:var(--color-bg-primary);border-radius:var(--radius-lg);border-left:4px solid var(--color-primary)}.keyboard-table{width:100%;border-collapse:collapse;margin-top:var(--space-4);background:var(--color-bg-primary);border-radius:var(--radius-lg);overflow:hidden}.keyboard-table th,.keyboard-table td{padding:var(--space-3) var(--space-4);text-align:left;border-bottom:1px solid var(--color-border)}.keyboard-table th{background:var(--color-bg-tertiary);font-weight:600;color:var(--color-text-primary)}.keyboard-table td{color:var(--color-text-secondary)}.keyboard-table tr:last-child td{border-bottom:none}kbd{display:inline-block;padding:var(--space-1) var(--space-2);font-family:var(--font-mono);font-size:var(--text-sm);background:var(--color-bg-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-sm);box-shadow:0 2px 0 var(--color-border)}@media(max-width:640px){.dua-section,.wcag-section,.multilingual-section,.keyboard-section,.contact-section{padding:var(--space-4)}.keyboard-table{font-size:var(--text-sm)}.keyboard-table th,.keyboard-table td{padding:var(--space-2)}}.pizza-container{display:flex;justify-content:center;align-items:center;width:100%;max-width:400px;margin:0 auto}.pizza-svg{width:100%;height:auto;filter:drop-shadow(0 10px 30px rgba(0,0,0,.3))}.pizza-crust{fill:#d4a574;stroke:#b8956a;stroke-width:3}.pizza-sauce{fill:#e53935}.pizza-slice{fill:#ffca28;stroke:#e8b923;stroke-width:2;cursor:pointer;transition:all .2s ease;transform-origin:center}.pizza-slice:hover{filter:brightness(1.1);transform:scale(1.02)}.pizza-slice.selected{fill:#ffd54f;stroke:var(--color-primary);stroke-width:4;filter:drop-shadow(0 0 10px var(--color-primary-glow))}.pizza-slice.selected:nth-child(odd){animation:sliceGlow 1.5s ease-in-out infinite}.pizza-slice.selected:nth-child(2n){animation:sliceGlow 1.5s ease-in-out infinite .5s}@keyframes sliceGlow{0%,to{filter:drop-shadow(0 0 8px var(--color-primary-glow))}50%{filter:drop-shadow(0 0 15px var(--color-primary-glow))}}.topping-pepperoni{fill:#c62828;stroke:#8e1c1c;stroke-width:1}.topping-olive{fill:#2e2e2e}.topping-mushroom{fill:#e0c9a6;stroke:#c4a77d;stroke-width:.5}.pizza-lines{stroke:#d4a574;stroke-width:3;fill:none}.pizza-center{fill:#ffca28;stroke:#e0b623;stroke-width:2}.slice-indicator{font-size:1.5rem;pointer-events:none;text-shadow:0 2px 4px rgba(0,0,0,.3)}@media(max-width:480px){.pizza-container{max-width:300px}}.customer-container{display:flex;flex-direction:column;align-items:center;gap:var(--space-2)}.customer-avatar{font-size:4rem;animation:customerFloat 3s ease-in-out infinite;transition:transform .3s ease}.customer-avatar.neutral{animation:customerFloat 3s ease-in-out infinite}.customer-avatar.happy{animation:customerBounce .5s ease-in-out}.customer-avatar.celebrating{animation:customerCelebrate .8s ease-in-out infinite}.customer-avatar.confused{animation:customerShake .4s ease-in-out}@keyframes customerFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes customerBounce{0%,to{transform:scale(1)}50%{transform:scale(1.2)}}@keyframes customerCelebrate{0%,to{transform:rotate(-5deg) scale(1.1)}50%{transform:rotate(5deg) scale(1.1)}}@keyframes customerShake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}.customer-reaction{font-size:1.5rem;opacity:0;animation:reactionPop .5s ease forwards}@keyframes reactionPop{0%{opacity:0;transform:scale(0) translateY(20px)}50%{opacity:1;transform:scale(1.3) translateY(-10px)}to{opacity:1;transform:scale(1) translateY(0)}}.order-bubble{position:relative;background:var(--glass-bg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:2px solid var(--glass-border);border-radius:var(--radius-2xl);padding:var(--space-6) var(--space-8);box-shadow:var(--shadow-lg);animation:bubbleIn .4s ease-out;text-align:center}.order-bubble:after{content:"";position:absolute;bottom:-15px;left:50%;transform:translate(-50%);border-width:15px 15px 0;border-style:solid;border-color:var(--glass-bg) transparent transparent}@keyframes bubbleIn{0%{opacity:0;transform:scale(.8) translateY(-20px)}to{opacity:1;transform:scale(1) translateY(0)}}.order-label{font-size:var(--text-sm);color:var(--color-text-muted);margin-bottom:var(--space-2);text-transform:uppercase;letter-spacing:.1em}.order-fraction{font-size:3rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:flex;flex-direction:column;align-items:center;gap:0;line-height:1}.fraction-numerator{font-size:3rem}.fraction-line{width:3rem;height:4px;background:var(--gradient-primary);border-radius:2px;margin:var(--space-1) 0}.fraction-denominator{font-size:3rem}.order-pizza-icon{margin-top:var(--space-4);font-size:2rem}@media(max-width:480px){.order-bubble{padding:var(--space-4) var(--space-6)}.fraction-numerator,.fraction-denominator{font-size:2.5rem}}.scoreboard{display:flex;justify-content:center;gap:var(--space-6);padding:var(--space-4);background:var(--glass-bg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius-2xl);margin-bottom:var(--space-6)}.score-item{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);padding:var(--space-2) var(--space-4)}.score-icon{font-size:1.5rem}.score-value{font-size:var(--text-2xl);font-weight:700;color:var(--color-text-primary)}.score-value.highlight{color:var(--color-primary-light);animation:scorePopIn .3s ease}@keyframes scorePopIn{0%{transform:scale(1)}50%{transform:scale(1.3)}to{transform:scale(1)}}.score-label{font-size:var(--text-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.combo-indicator{position:absolute;top:-10px;right:-10px;background:var(--gradient-secondary);color:#fff;font-size:var(--text-xs);font-weight:700;padding:var(--space-1) var(--space-2);border-radius:var(--radius-full);animation:comboBounce .5s ease infinite}@keyframes comboBounce{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.floating-score{position:absolute;font-size:var(--text-lg);font-weight:700;color:var(--color-primary-light);animation:floatUp 1s ease-out forwards;pointer-events:none}@keyframes floatUp{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-50px) scale(1.5)}}.level-badge{background:var(--gradient-primary);color:#fff;padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);font-size:var(--text-sm);font-weight:600}@media(max-width:480px){.scoreboard{gap:var(--space-3);padding:var(--space-3)}.score-item{padding:var(--space-1) var(--space-2)}.score-value{font-size:var(--text-xl)}.score-icon{font-size:1.2rem}}.feedback-overlay{position:fixed;inset:0;background:#000000b3;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;justify-content:center;align-items:center;z-index:1000;animation:overlayIn .3s ease}@keyframes overlayIn{0%{opacity:0}to{opacity:1}}.feedback-modal{background:var(--glass-bg);-webkit-backdrop-filter:blur(30px);backdrop-filter:blur(30px);border:2px solid var(--glass-border);border-radius:var(--radius-3xl);padding:var(--space-10);text-align:center;max-width:400px;width:90%;animation:modalIn .4s cubic-bezier(.34,1.56,.64,1)}.feedback-modal.correct{border-color:var(--color-success);box-shadow:0 0 40px #4caf504d}.feedback-modal.incorrect{border-color:var(--color-error);box-shadow:0 0 40px #f443364d}@keyframes modalIn{0%{opacity:0;transform:scale(.8) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}.feedback-icon{font-size:5rem;margin-bottom:var(--space-4)}.feedback-icon.correct{animation:iconCelebrate .6s ease-in-out}.feedback-icon.incorrect{animation:iconShake .5s ease-in-out}@keyframes iconCelebrate{0%,to{transform:scale(1) rotate(0)}25%{transform:scale(1.2) rotate(-10deg)}50%{transform:scale(1.3) rotate(10deg)}75%{transform:scale(1.2) rotate(-5deg)}}@keyframes iconShake{0%,to{transform:translate(0)}20%{transform:translate(-15px)}40%{transform:translate(15px)}60%{transform:translate(-10px)}80%{transform:translate(10px)}}.feedback-title{font-size:var(--text-2xl);font-weight:700;margin-bottom:var(--space-4)}.feedback-title.correct{color:var(--color-success)}.feedback-title.incorrect{color:var(--color-error)}.feedback-explanation{font-size:var(--text-lg);color:var(--color-text-secondary);margin-bottom:var(--space-6);line-height:var(--line-height-relaxed)}.feedback-fraction-visual{display:flex;justify-content:center;align-items:center;gap:var(--space-4);margin-bottom:var(--space-6);font-size:var(--text-3xl);font-weight:700}.feedback-fraction{display:flex;flex-direction:column;align-items:center}.feedback-fraction-line{width:2.5rem;height:3px;background:var(--color-text-primary);margin:var(--space-1) 0}.feedback-equals{color:var(--color-primary-light)}.feedback-score{display:flex;align-items:center;justify-content:center;gap:var(--space-2);font-size:var(--text-xl);color:var(--color-primary-light);margin-bottom:var(--space-6)}.feedback-button{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);font-weight:600;border:none;border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-fast)}.feedback-button.correct{background:var(--gradient-primary);color:#fff}.feedback-button.incorrect{background:var(--color-error);color:#fff}.feedback-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}@media(max-width:480px){.feedback-modal{padding:var(--space-6)}.feedback-icon{font-size:4rem}.feedback-title{font-size:var(--text-xl)}}.pizza-game{padding:var(--space-6);min-height:calc(100vh - 200px)}.pizza-game .container{max-width:900px;margin:0 auto}.game-header{text-align:center;margin-bottom:var(--space-8)}.game-title{font-size:var(--text-4xl);font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--space-2)}.game-subtitle{font-size:var(--text-lg);color:var(--color-text-secondary)}.game-start-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-16);text-align:center}.start-pizza-icon{font-size:6rem;margin-bottom:var(--space-6);animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0) rotate(-5deg)}50%{transform:translateY(-15px) rotate(5deg)}}.start-description{font-size:var(--text-lg);color:var(--color-text-secondary);max-width:500px;margin-bottom:var(--space-8);line-height:var(--line-height-relaxed)}.pizza-level-select{display:flex;justify-content:center;width:100%;gap:var(--space-4);margin-bottom:var(--space-8)}.pizza-level-button{width:140px;height:60px;display:flex;align-items:center;justify-content:center;padding:0;border:2px solid var(--glass-border);background:var(--glass-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--radius-xl);color:var(--color-text-primary);font-size:var(--text-lg);font-weight:600;cursor:pointer;text-align:center;transition:all var(--transition-fast)}.pizza-level-button:hover{border-color:var(--color-primary);background:var(--glass-bg-light);transform:translateY(-3px)}.pizza-level-button.active{border-color:var(--color-primary);background:var(--gradient-primary);color:#fff}.start-button{padding:var(--space-5) var(--space-12);font-size:var(--text-xl);font-weight:700;background:var(--gradient-primary);color:#fff;border:none;border-radius:var(--radius-2xl);cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-lg)}.start-button:hover{transform:translateY(-3px) scale(1.02);box-shadow:var(--shadow-xl),var(--shadow-glow)}.game-area{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-8);align-items:start}.customer-section,.pizza-section{display:flex;flex-direction:column;align-items:center;gap:var(--space-6)}.pizza-controls{display:flex;align-items:center;justify-content:center;gap:var(--space-6);width:100%}.selection-info{text-align:center;padding:var(--space-3) var(--space-5);background:var(--glass-bg);border-radius:var(--radius-xl);border:1px solid var(--glass-border)}.selection-count{font-size:var(--text-2xl);font-weight:700;color:var(--color-primary-light)}.selection-label{font-size:var(--text-sm);color:var(--color-text-muted)}.game-actions{display:flex;justify-content:center;gap:var(--space-4)}.serve-button{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);font-weight:700;background:var(--gradient-primary);color:#fff;border:none;border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-fast)}.serve-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-glow)}.serve-button:disabled{opacity:.5;cursor:not-allowed}.reset-button{padding:var(--space-4) var(--space-6);font-size:var(--text-base);font-weight:600;background:transparent;color:var(--color-text-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-fast)}.reset-button:hover{background:var(--glass-bg);color:var(--color-text-primary)}.game-over-screen{text-align:center;padding:var(--space-12)}.game-over-icon{font-size:5rem;margin-bottom:var(--space-6)}.game-over-title{font-size:var(--text-3xl);font-weight:700;color:var(--color-text-primary);margin-bottom:var(--space-4)}.game-over-stats{display:flex;justify-content:center;gap:var(--space-8);margin-bottom:var(--space-8)}.stat-item{text-align:center}.stat-value{font-size:var(--text-4xl);font-weight:700;color:var(--color-primary-light)}.stat-label{font-size:var(--text-sm);color:var(--color-text-muted)}.play-again-button{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);font-weight:700;background:var(--gradient-primary);color:#fff;border:none;border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-fast)}.play-again-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}@media(max-width:768px){.game-area{grid-template-columns:1fr;gap:var(--space-6)}.customer-section{order:1}.pizza-section{order:2}.level-select{flex-wrap:wrap;justify-content:center}.game-over-stats{flex-wrap:wrap;gap:var(--space-4)}}@media(max-width:480px){.pizza-game{padding:var(--space-4)}.game-title{font-size:var(--text-2xl)}.start-pizza-icon{font-size:4rem}}.memory-card{position:relative;width:100%;min-height:100px;aspect-ratio:1;cursor:pointer;perspective:1000px;-webkit-user-select:none;user-select:none}.memory-card.disabled{pointer-events:none}.memory-card.matched{animation:matchPulse .6s ease-out}@keyframes matchPulse{0%{transform:scale(1)}30%{transform:scale(1.15)}to{transform:scale(1)}}.card-inner{position:relative;width:100%;height:100%;transition:transform .6s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d}.memory-card.flipped .card-inner{transform:rotateY(180deg)}.card-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:16px;display:flex;align-items:center;justify-content:center}.card-back{background:linear-gradient(145deg,#7c3aed,#5b21b6,#4c1d95);border:3px solid rgba(255,255,255,.3);box-shadow:0 8px 25px #7c3aed80,0 0 0 1px #ffffff1a inset,0 10px 30px #0003;overflow:hidden}.card-back:before{content:"❓";font-size:2.5rem;opacity:.9;animation:floatIcon 2s ease-in-out infinite}@keyframes floatIcon{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-5px) scale(1.05)}}.card-back:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:linear-gradient(45deg,transparent 30%,rgba(255,255,255,.08) 50%,transparent 70%);animation:shineEffect 3s ease-in-out infinite}@keyframes shineEffect{0%{transform:translate(-100%) rotate(45deg)}to{transform:translate(100%) rotate(45deg)}}.card-front{background:linear-gradient(145deg,#fff,#f8fafc);border:3px solid #a78bfa;transform:rotateY(180deg);padding:1rem;flex-direction:column;gap:.5rem;box-shadow:0 8px 25px #00000026,0 0 0 1px #a78bfa4d inset}.memory-card.matched .card-front{background:linear-gradient(145deg,#d1fae5,#a7f3d0);border-color:#10b981;box-shadow:0 0 30px #10b98166,0 8px 25px #10b9814d,0 0 0 1px #10b98180 inset;animation:successGlow .6s ease-out}@keyframes successGlow{0%{box-shadow:0 0 #10b98100}50%{box-shadow:0 0 50px #10b981cc,0 0 100px #10b98166}to{box-shadow:0 0 30px #10b98166,0 8px 25px #10b9814d}}.memory-card:not(.flipped):not(.matched):hover .card-inner{transform:scale(1.05) rotateY(5deg)}.memory-card:not(.flipped):not(.matched):hover .card-back{box-shadow:0 15px 40px #7c3aed99,0 0 0 2px #fff6 inset}.fraction-display{display:flex;flex-direction:column;align-items:center;font-weight:800;gap:0}.fraction-numerator{font-size:2.5rem;color:#5b21b6;line-height:1;text-shadow:0 2px 4px rgba(91,33,182,.2)}.fraction-line{width:60px;height:4px;background:linear-gradient(90deg,#7c3aed,#5b21b6);margin:6px 0;border-radius:2px;box-shadow:0 2px 4px #7c3aed4d}.fraction-denominator{font-size:2.5rem;color:#5b21b6;line-height:1;text-shadow:0 2px 4px rgba(91,33,182,.2)}.decimal-display{font-size:2.5rem;font-weight:800;color:#059669;text-shadow:0 2px 8px rgba(5,150,105,.2)}.percentage-display{font-size:2.25rem;font-weight:800;color:#d97706;text-shadow:0 2px 8px rgba(217,119,6,.2)}.visual-display{width:85%;height:85%;display:flex;align-items:center;justify-content:center}.visual-display svg{width:100%;height:100%;filter:drop-shadow(0 4px 8px rgba(0,0,0,.1))}.pie-segment-filled{fill:#7c3aed;stroke:#5b21b6;stroke-width:1}.pie-segment-empty{fill:#f3f4f6;stroke:#d1d5db;stroke-width:1}.pie-outline{fill:none;stroke:#5b21b6;stroke-width:2}.bar-segment{stroke:#9ca3af;stroke-width:1}.bar-segment-filled{fill:#7c3aed;stroke:#5b21b6}.bar-segment-empty{fill:#f3f4f6;stroke:#d1d5db}@media(max-width:768px){.memory-card{min-height:80px}.fraction-numerator,.fraction-denominator{font-size:1.75rem}.fraction-line{width:40px;height:3px}.decimal-display{font-size:1.75rem}.percentage-display{font-size:1.5rem}.card-back:before{font-size:2rem}}@media(max-width:480px){.memory-card{min-height:70px}.fraction-numerator,.fraction-denominator{font-size:1.5rem}.decimal-display,.percentage-display{font-size:1.25rem}}.board-container{display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:100%;max-width:700px;margin:0 auto}.board-header{display:flex;justify-content:space-between;align-items:center;width:100%;padding:0 .5rem;gap:1rem;flex-wrap:wrap}.stats-group{display:flex;gap:1rem}.stat-item{display:flex;flex-direction:column;align-items:center;gap:.25rem;background:#fffffff2;padding:.75rem 1.25rem;border-radius:16px;box-shadow:0 8px 25px #00000026,0 0 0 1px #ffffff80 inset;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.stat-icon{font-size:1.5rem}.stat-value{font-size:1.5rem;font-weight:800;color:#5b21b6}.stat-label{font-size:.7rem;color:#6b7280;text-transform:uppercase;letter-spacing:.5px;font-weight:600}.pairs-counter{display:flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background:#fffffff2;border-radius:24px;font-weight:700;font-size:1.1rem;color:#5b21b6;box-shadow:0 8px 25px #00000026,0 0 0 1px #ffffff80 inset}.pairs-counter-icon{font-size:1.25rem}.stars-display{display:flex;gap:.25rem;font-size:1.75rem}.star{color:#ffffff4d;transition:all .4s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}.star.earned{color:#fbbf24;animation:starBounce .6s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 4px 12px rgba(251,191,36,.5))}@keyframes starBounce{0%{transform:scale(0) rotate(-180deg)}60%{transform:scale(1.3) rotate(10deg)}to{transform:scale(1) rotate(0)}}.game-board{display:grid;gap:1rem;padding:1.5rem;background:#ffffff1a;border-radius:24px;box-shadow:inset 0 2px 4px #ffffff1a,0 20px 50px #0003;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);width:100%}.game-board.cols-3{grid-template-columns:repeat(3,1fr);max-width:450px}.game-board.cols-4{grid-template-columns:repeat(4,1fr);max-width:550px}.game-board.cols-5{grid-template-columns:repeat(5,1fr);max-width:650px}.game-board.cols-6{grid-template-columns:repeat(6,1fr);max-width:700px}@media(max-width:768px){.board-container{gap:1rem}.board-header{justify-content:center;gap:.75rem}.game-board{gap:.75rem;padding:1rem}.game-board.cols-5,.game-board.cols-6{grid-template-columns:repeat(4,1fr)}.stat-item{padding:.5rem 1rem}.stat-value{font-size:1.25rem}.stars-display{font-size:1.5rem}}@media(max-width:480px){.game-board{gap:.5rem;padding:.75rem}.game-board.cols-4,.game-board.cols-5,.game-board.cols-6{grid-template-columns:repeat(3,1fr)}.stats-group{gap:.5rem}.stat-item{padding:.4rem .75rem}.stat-value{font-size:1rem}.stat-label{font-size:.6rem}.pairs-counter{padding:.5rem 1rem;font-size:1rem}}.game-over-modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:linear-gradient(135deg,#fff,#f8f9fa);border-radius:24px;padding:2.5rem;max-width:420px;width:90%;text-align:center;box-shadow:0 30px 60px #0000004d,0 0 0 1px #ffffff1a;animation:modalSlideIn .4s cubic-bezier(.34,1.56,.64,1)}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.8) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-icon{font-size:4rem;margin-bottom:1rem;animation:bounce .6s ease-out}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-15px)}}.modal-title{font-size:1.75rem;font-weight:700;color:#4338ca;margin-bottom:.5rem}.modal-stars{display:flex;justify-content:center;gap:.5rem;font-size:2.5rem;margin:1.5rem 0}.modal-star{opacity:.2;transition:all .3s}.modal-star.earned{opacity:1;animation:starPop .5s ease-out var(--delay, 0s) backwards}@keyframes starPop{0%{opacity:0;transform:scale(0) rotate(-20deg)}to{opacity:1;transform:scale(1) rotate(0)}}.modal-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1.5rem 0;padding:1rem;background:#f3f4f6;border-radius:16px}.modal-stat{display:flex;flex-direction:column;gap:.25rem}.modal-stat-value{font-size:1.5rem;font-weight:700;color:#4338ca}.modal-stat-label{font-size:.75rem;color:#6b7280;text-transform:uppercase}.modal-equivalences{margin:1.5rem 0;padding:1rem;background:#eef2ff;border-radius:12px;max-height:150px;overflow-y:auto}.modal-equivalences-title{font-size:.875rem;font-weight:600;color:#4338ca;margin-bottom:.75rem}.equivalence-list{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}.equivalence-item{padding:.25rem .75rem;background:#fff;border-radius:20px;font-size:.875rem;font-weight:500;color:#4338ca;box-shadow:0 2px 4px #0000001a}.modal-actions{display:flex;gap:1rem;margin-top:1.5rem}.modal-btn{flex:1;padding:.875rem 1.5rem;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.modal-btn-primary{background:linear-gradient(135deg,#6366f1,#4f46e5);color:#fff}.modal-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px #6366f14d}.modal-btn-secondary{background:#e5e7eb;color:#374151}.modal-btn-secondary:hover{background:#d1d5db}.confetti-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden}.confetti{position:absolute;width:10px;height:10px;animation:confettiFall 3s linear forwards}@keyframes confettiFall{0%{transform:translateY(-100%) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}.memory-game{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem 1rem}.memory-game .container{max-width:800px;margin:0 auto}.game-title{font-size:2.5rem;font-weight:800;color:#fff;text-shadow:0 4px 20px rgba(0,0,0,.3);margin-bottom:.5rem}.game-subtitle{font-size:1.125rem;color:#ffffffd9}.game-start-screen{background:#fffffffa;border-radius:24px;padding:3rem 2rem;text-align:center;box-shadow:0 20px 60px #0003}.start-icon{font-size:5rem;margin-bottom:1.5rem;animation:float 3s ease-in-out infinite}.start-description{font-size:1.125rem;color:#374151;margin-bottom:2rem;max-width:500px;margin-left:auto;margin-right:auto;line-height:1.6}.level-select{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;margin-bottom:2rem}.level-button{padding:.875rem .5rem;border:2px solid #c7d2fe;background:#fff;border-radius:12px;font-weight:600;font-size:.9rem;color:#4338ca;cursor:pointer;transition:all .2s}.level-button:hover{border-color:#6366f1;background:#eef2ff}.level-button.active{background:#6366f1;border-color:#6366f1;color:#fff}.level-info{display:flex;justify-content:center;gap:1.5rem;padding:1rem;background:#f3f4f6;border-radius:12px;margin-bottom:2rem}.level-info-item{display:flex;flex-direction:column;align-items:center;gap:.25rem}.level-info-value{font-size:1.25rem;font-weight:700;color:#4338ca}.level-info-label{font-size:.75rem;color:#6b7280;text-transform:uppercase}.start-button{padding:1rem 2.5rem;background:linear-gradient(135deg,#6366f1,#4f46e5);color:#fff;border:none;border-radius:12px;font-size:1.25rem;font-weight:700;cursor:pointer;transition:all .2s}.start-button:hover{transform:translateY(-2px);box-shadow:0 10px 30px #6366f166}.game-content{animation:fadeInUp .5s ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.game-actions{display:flex;justify-content:center;gap:1rem;margin-top:2rem}.action-button{padding:.75rem 1.5rem;border:none;border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s}.reset-button{background:#fff3;color:#fff}.reset-button:hover{background:#ffffff4d}.exit-button{background:#0003;color:#fff}.exit-button:hover{background:#0000004d}.mismatch-feedback{position:fixed;bottom:2rem;left:50%;transform:translate(-50%);background:#000000e6;color:#fff;padding:1rem 2rem;border-radius:16px;display:flex;align-items:center;gap:1rem;animation:slideUp .3s ease-out;z-index:100}@keyframes slideUp{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.mismatch-card{display:flex;flex-direction:column;align-items:center;padding:.5rem;background:#ffffff1a;border-radius:8px}.mismatch-value{font-size:1.25rem;font-weight:700}.mismatch-decimal{font-size:.875rem;color:#ffffffb3}.mismatch-symbol{font-size:1.5rem}@media(max-width:768px){.game-title{font-size:1.75rem}.level-select{grid-template-columns:repeat(2,1fr)}.start-icon{font-size:4rem}.start-description{font-size:1rem}.level-info{flex-wrap:wrap}}@media(max-width:480px){.memory-game{padding:1rem .5rem}.game-start-screen{padding:2rem 1rem}}.race-track{background:linear-gradient(180deg,#1e3a5f,#0f2744);border-radius:16px;padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 4px 20px #0000004d}.track-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:2px dashed rgba(255,255,255,.2)}.track-label{color:#fff;font-size:1.1rem;font-weight:600;text-transform:uppercase;letter-spacing:1px}.position-indicator{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#1a1a1a;padding:.4rem 1rem;border-radius:20px;font-weight:700;font-size:.9rem}.track-lanes{display:flex;flex-direction:column;gap:.75rem}.track-lane{display:grid;grid-template-columns:60px 1fr 30px;align-items:center;gap:.5rem;padding:.5rem;background:#ffffff0d;border-radius:8px;transition:background .3s ease}.track-lane.player-lane{background:#4ade8026;border:2px solid rgba(74,222,128,.3)}.lane-label{color:var(--lane-color, #fff);font-weight:600;font-size:.85rem;text-align:right;padding-right:.5rem}.lane-road{position:relative;height:40px;background:linear-gradient(90deg,#3a3a3a,#4a4a4a,#3a3a3a);border-radius:4px;overflow:hidden;border:2px solid #555}.lane-road:before{content:"";position:absolute;top:50%;left:0;right:0;height:2px;background:repeating-linear-gradient(90deg,#fff 0,#fff 20px,transparent 20px,transparent 40px);transform:translateY(-50%);opacity:.3}.lane-progress{position:absolute;top:0;left:0;height:100%;background:linear-gradient(90deg,var(--lane-color, #4ade80) 0%,transparent 100%);opacity:.3;transition:width .3s ease}.racer-car{position:absolute;top:50%;transform:translate(-50%,-50%);font-size:1.8rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.5));transition:left .3s ease;z-index:2}.racer-car.turbo-active{animation:turbo-shake .1s infinite}.racer-car.turbo-active .car-avatar{filter:drop-shadow(0 0 10px #fbbf24)}.turbo-flames{position:absolute;left:-15px;top:50%;transform:translateY(-50%);font-size:1.2rem;animation:flame-flicker .2s infinite alternate}.finish-line{font-size:1.4rem;text-align:center}.turbo-notification{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#1a1a1a;padding:.75rem 2rem;border-radius:30px;font-size:1.2rem;font-weight:700;animation:turbo-popup .5s ease-out;box-shadow:0 4px 20px #fbbf2480;z-index:10}@keyframes turbo-shake{0%,to{transform:translate(-50%,-50%) rotate(-1deg)}50%{transform:translate(-50%,-50%) rotate(1deg)}}@keyframes flame-flicker{0%{opacity:.8;transform:translateY(-50%) scale(1)}to{opacity:1;transform:translateY(-50%) scale(1.1)}}@keyframes turbo-popup{0%{transform:translate(-50%,-50%) scale(.5);opacity:0}50%{transform:translate(-50%,-50%) scale(1.1)}to{transform:translate(-50%,-50%) scale(1);opacity:1}}@media(max-width:600px){.race-track{padding:1rem}.track-lane{grid-template-columns:50px 1fr 25px}.lane-road{height:35px}.racer-car{font-size:1.4rem}.lane-label{font-size:.75rem}}.question-panel{background:linear-gradient(135deg,#fff,#f8fafc);border-radius:16px;padding:1rem 1.25rem;box-shadow:0 8px 32px #0000001a;transition:all .3s ease;border:3px solid transparent}.question-panel.feedback-correct{border-color:#4ade80;background:linear-gradient(135deg,#f0fdf4,#dcfce7)}.question-panel.feedback-incorrect{border-color:#f87171;background:linear-gradient(135deg,#fef2f2,#fee2e2);animation:shake .5s ease}.question-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.question-number{font-size:.9rem;color:#64748b;font-weight:500}.combo-indicator{background:linear-gradient(135deg,#f97316,#fb923c);color:#fff;padding:.4rem 1rem;border-radius:20px;font-weight:700;font-size:.85rem;animation:pulse .5s ease infinite alternate}.operation-display{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:1rem;flex-wrap:wrap}.fraction-display{display:inline-flex;flex-direction:column;align-items:center;background:#f1f5f9;padding:.5rem .75rem;border-radius:10px;min-width:50px}.fraction-display.mixed{flex-direction:row;gap:.5rem}.fraction-display.mixed .whole-part{font-size:1.5rem;font-weight:700;color:#1e293b}.fraction-display.mixed .fraction-part{display:flex;flex-direction:column;align-items:center}.numerator,.denominator{font-size:1.25rem;font-weight:700;color:#1e293b;line-height:1.2}.fraction-bar{width:100%;height:3px;background:#334155;margin:.25rem 0}.operator,.equals{font-size:1.5rem;font-weight:700;color:#6366f1}.question-exponent{font-size:1.5rem;font-weight:700;color:#1e293b;vertical-align:super;align-self:flex-start;margin-top:.5rem}.answer-placeholder{font-size:2.5rem;font-weight:700;color:#94a3b8;background:#e2e8f0;padding:.5rem 1.5rem;border-radius:12px}.answer-options{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;margin-bottom:.5rem}.answer-button{display:flex;justify-content:center;align-items:center;padding:.75rem .5rem;background:linear-gradient(135deg,#6366f1,#8b5cf6);border:none;border-radius:12px;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px #6366f14d}.answer-button .fraction-display{background:transparent}.answer-button .numerator,.answer-button .denominator,.answer-button .whole-part{color:#fff}.answer-button .fraction-bar{background:#fff}.answer-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 16px #6366f166}.answer-button:active:not(:disabled){transform:translateY(0)}.answer-button:disabled{cursor:not-allowed;opacity:.7}.answer-button.correct-answer{background:linear-gradient(135deg,#22c55e,#4ade80)!important;box-shadow:0 4px 12px #22c55e66}.answer-button.wrong-answer:not(.correct-answer){background:linear-gradient(135deg,#94a3b8,#cbd5e1);box-shadow:none}.feedback-message{text-align:center;padding:.5rem;border-radius:10px;font-size:1rem;font-weight:700;animation:pop-in .3s ease-out}.feedback-message.correct{background:#dcfce7;color:#166534}.feedback-message.incorrect{background:#fee2e2;color:#991b1b}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-10px)}40%{transform:translate(10px)}60%{transform:translate(-10px)}80%{transform:translate(10px)}}@keyframes pulse{0%{transform:scale(1)}to{transform:scale(1.05)}}@keyframes pop-in{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}@media(max-width:700px){.answer-options{grid-template-columns:repeat(2,1fr)}}@media(max-width:500px){.question-panel{padding:.75rem 1rem}.operation-display{gap:.5rem}.fraction-display{padding:.4rem .6rem;min-width:40px}.numerator,.denominator{font-size:1rem}.operator,.equals{font-size:1.25rem}.answer-options{gap:.5rem}.answer-button{padding:.5rem .4rem}.answer-button .numerator,.answer-button .denominator{font-size:.9rem}}.paren{font-size:1.5rem;font-weight:700;color:#6366f1;margin:0 .2rem}.traffic-light-overlay{position:fixed;inset:0;background:#000000d9;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:1000;animation:fade-in .3s ease}.traffic-light{display:flex;flex-direction:column;align-items:center;gap:20px;background:#2c2c2c;padding:30px 25px;border-radius:20px;box-shadow:0 10px 40px #00000080;border:4px solid #444}.light{width:80px;height:80px;border-radius:50%;background:#333;border:4px solid #555;transition:all .2s ease;box-shadow:inset 0 4px 10px #00000080}.light.red{background:#4a1515}.light.red.active{background:#ef4444;box-shadow:0 0 30px #ef4444,0 0 60px #ef4444,inset 0 0 10px #ffffff4d}.light.yellow{background:#4a3a15}.light.yellow.active{background:#fbbf24;box-shadow:0 0 30px #fbbf24,0 0 60px #fbbf24,inset 0 0 10px #ffffff4d}.light.green{background:#154a1f}.light.green.active{background:#22c55e;box-shadow:0 0 30px #22c55e,0 0 60px #22c55e,inset 0 0 10px #ffffff4d;animation:pulse-green .3s ease infinite alternate}.countdown-text{margin-top:30px;font-size:4rem;font-weight:900;color:#fff;text-shadow:0 4px 20px rgba(0,0,0,.5);animation:scale-pulse .5s ease infinite alternate}@keyframes pulse-green{0%{box-shadow:0 0 30px #22c55e,0 0 60px #22c55e}to{box-shadow:0 0 50px #22c55e,0 0 100px #22c55e}}@keyframes scale-pulse{0%{transform:scale(1)}to{transform:scale(1.1)}}@media(max-width:500px){.light{width:60px;height:60px}.traffic-light{padding:20px 18px;gap:15px}.countdown-text{font-size:3rem}}.results-overlay{position:fixed;inset:0;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem;overflow-y:auto;animation:fade-in .3s ease}.results-modal{background:linear-gradient(135deg,#1e293b,#0f172a);border-radius:24px;padding:2rem;max-width:500px;width:100%;max-height:90vh;overflow-y:auto;animation:slide-up .4s ease}.results-header{text-align:center;margin-bottom:1.5rem}.results-header h2{color:#fff;font-size:1.8rem;margin-bottom:.5rem}.player-result{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,#fbbf24,#f59e0b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.podium{display:flex;justify-content:center;align-items:flex-end;gap:.5rem;margin-bottom:2rem}.podium-place{display:flex;flex-direction:column;align-items:center;text-align:center}.podium-place.place-1{order:2}.podium-place.place-2{order:1}.podium-place.place-3{order:3}.podium-avatar{font-size:2.5rem;margin-bottom:.25rem}.podium-name{color:#fff;font-weight:600;font-size:.9rem;margin-bottom:.25rem}.podium-medal{font-size:1.5rem;margin-bottom:.5rem}.podium-bar{width:80px;border-radius:8px 8px 0 0;transition:height .5s ease}.place-1 .podium-bar{background:linear-gradient(180deg,#fbbf24,#f59e0b)}.place-2 .podium-bar{background:linear-gradient(180deg,#94a3b8,#64748b)}.place-3 .podium-bar{background:linear-gradient(180deg,#cd7f32,#a16207)}.podium-place.is-player{animation:winner-glow 1s ease infinite alternate}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1.5rem}.stat-card{background:#ffffff1a;border-radius:12px;padding:1rem;text-align:center}.stat-value{display:block;font-size:1.5rem;font-weight:700;color:#4ade80}.stat-label{display:block;font-size:.75rem;color:#94a3b8;margin-top:.25rem}.wrong-answers-section{background:#f871711a;border-radius:12px;padding:1rem;margin-bottom:1.5rem}.wrong-answers-section h3{color:#f87171;font-size:1rem;margin-bottom:.75rem}.wrong-answers-list{display:flex;flex-direction:column;gap:.5rem;max-height:150px;overflow-y:auto}.wrong-answer-item{display:flex;align-items:center;gap:.5rem;background:#ffffff0d;padding:.5rem .75rem;border-radius:8px;flex-wrap:wrap}.wrong-operation{display:flex;align-items:center;gap:.25rem}.result-fraction{display:inline-flex;flex-direction:column;align-items:center;color:#fff;font-size:.85rem;font-weight:600}.result-fraction.mixed{flex-direction:row;gap:.25rem}.result-fraction .bar{width:100%;height:2px;background:#fff}.result-fraction .frac{display:flex;flex-direction:column;align-items:center}.wrong-operation .op{color:#94a3b8;font-size:1rem;margin:0 .25rem}.result-exponent{font-size:.85rem;font-weight:700;color:#fff;vertical-align:super;margin-top:.25rem}.correct-answer{color:#4ade80;font-weight:600;display:flex;align-items:center;gap:.25rem}.results-actions{display:flex;gap:1rem}.action-btn{flex:1;padding:1rem;border:none;border-radius:12px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s ease}.action-btn.play-again{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff}.action-btn.play-again:hover{transform:translateY(-2px);box-shadow:0 4px 20px #22c55e66}.action-btn.exit{background:#ffffff1a;color:#fff}.action-btn.exit:hover{background:#ffffff26}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-up{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes winner-glow{0%{filter:drop-shadow(0 0 10px rgba(251,191,36,.5))}to{filter:drop-shadow(0 0 20px rgba(251,191,36,.8))}}@media(max-width:500px){.results-modal{padding:1.5rem}.stats-grid{grid-template-columns:repeat(3,1fr);gap:.5rem}.stat-card{padding:.75rem .5rem}.stat-value{font-size:1.2rem}.podium-bar{width:60px}}.wrong-answers-list .fraction-display{background:transparent!important;padding:0!important;min-width:unset!important;display:inline-flex!important}.wrong-answers-list .fraction-display .whole-part,.wrong-answers-list .fraction-display .numerator,.wrong-answers-list .fraction-display .denominator{color:#fff!important;font-size:.85rem}.wrong-answers-list .fraction-display .fraction-bar{background:#fff!important}.wrong-answers-list .operator{color:#94a3b8;font-size:1rem}.wrong-answers-list .paren{color:#94a3b8;font-weight:700;margin:0 .1rem}.wrong-answers-list .question-exponent{color:#fff;font-size:.7rem;vertical-align:super}.fraction-race{min-height:100vh;background:linear-gradient(180deg,#0f172a,#1e293b,#0f172a);padding:1rem 0 2rem}.fraction-race .container{max-width:700px;margin:0 auto;padding:0 1rem}.game-header{text-align:center;margin-bottom:2rem}.game-title{font-size:2.5rem;color:#fff;margin-bottom:.5rem;text-shadow:0 2px 10px rgba(0,0,0,.3)}.game-subtitle{font-size:1.1rem;color:#94a3b8}.game-start-screen{background:linear-gradient(135deg,#fff,#f8fafc);border-radius:24px;padding:2.5rem;text-align:center;box-shadow:0 10px 40px #0003}.start-icon{font-size:5rem;margin-bottom:1rem;animation:flag-wave 1s ease-in-out infinite}.start-description{font-size:1.1rem;color:#475569;margin-bottom:2rem;max-width:400px;margin-left:auto;margin-right:auto;line-height:1.6}.level-select{display:flex;justify-content:center;gap:.75rem;margin-bottom:1.5rem}.level-button{padding:.75rem 1.5rem;border:2px solid #e2e8f0;background:#fff;border-radius:12px;font-size:1rem;font-weight:600;color:#64748b;cursor:pointer;transition:all .2s ease}.level-button:hover{border-color:#6366f1;color:#6366f1}.level-button.active{background:linear-gradient(135deg,#6366f1,#8b5cf6);border-color:transparent;color:#fff;box-shadow:0 4px 12px #6366f14d}.level-info{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:2rem;padding:1.5rem;background:#f8fafc;border-radius:16px}.level-info-item{display:flex;flex-direction:column;align-items:center}.level-info-value{font-size:1.5rem;font-weight:700;color:#1e293b}.level-info-label{font-size:.75rem;color:#64748b;margin-top:.25rem;text-align:center}.start-button{padding:1.25rem 3rem;font-size:1.25rem;font-weight:700;background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;border:none;border-radius:16px;cursor:pointer;transition:all .2s ease;box-shadow:0 6px 20px #22c55e66}.start-button:hover{transform:translateY(-2px);box-shadow:0 8px 25px #22c55e80}.start-button:active{transform:translateY(0)}.race-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding:.75rem 1rem;background:#ffffff0d;border-radius:12px}.race-stats{display:flex;gap:1.5rem}.race-stats .stat{color:#fff;font-weight:600;font-size:1rem}.exit-race-btn{padding:.5rem 1rem;background:#f8717133;color:#f87171;border:1px solid rgba(248,113,113,.3);border-radius:8px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s ease}.exit-race-btn:hover{background:#f871714d}@keyframes flag-wave{0%,to{transform:rotate(-5deg)}50%{transform:rotate(5deg)}}.mode-select{display:flex;justify-content:center;gap:.75rem;margin-bottom:2rem;flex-wrap:wrap}.mode-button{padding:1rem 1.5rem;border:2px solid #e2e8f0;background:#fff;border-radius:16px;font-size:1rem;font-weight:600;color:#64748b;cursor:pointer;transition:all .2s ease;display:flex;flex-direction:column;align-items:center;gap:.5rem;min-width:120px}.mode-button:hover{border-color:#6366f1;color:#6366f1}.mode-button.active{background:linear-gradient(135deg,#6366f1,#8b5cf6);border-color:transparent;color:#fff;box-shadow:0 4px 12px #6366f14d}.mode-icon{font-size:1.5rem}@media(max-width:600px){.game-title{font-size:1.8rem}.game-start-screen{padding:1.5rem}.start-icon{font-size:4rem}.start-description{font-size:1rem}.level-select{flex-wrap:wrap}.level-button{padding:.6rem 1rem;font-size:.9rem}.level-info{grid-template-columns:repeat(2,1fr);gap:.75rem;padding:1rem}.start-button{width:100%;padding:1rem;font-size:1.1rem}.race-header{flex-direction:column;gap:.75rem}.race-stats{width:100%;justify-content:space-around}}.home-page{padding-bottom:var(--space-24)}.hero{text-align:center;padding:var(--space-24) var(--space-4);position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:radial-gradient(circle,var(--color-primary-glow) 0%,transparent 70%);pointer-events:none;animation:pulse 4s ease-in-out infinite}.hero h1{font-size:var(--text-6xl);margin-bottom:var(--space-6);background:linear-gradient(135deg,#fff 0%,var(--color-primary-light) 50%,var(--color-secondary-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeIn .8s ease-out forwards;position:relative;z-index:1}.hero-subtitle{font-size:var(--text-2xl);color:var(--color-text-secondary);margin-bottom:var(--space-6);animation:fadeIn .8s ease-out .2s forwards;opacity:0;position:relative;z-index:1}.hero-description{font-size:var(--text-lg);color:var(--color-text-muted);max-width:600px;margin:0 auto var(--space-10);line-height:var(--line-height-relaxed);animation:fadeIn .8s ease-out .4s forwards;opacity:0;position:relative;z-index:1}.hero-cta{display:flex;gap:var(--space-4);justify-content:center;flex-wrap:wrap;animation:fadeIn .8s ease-out .6s forwards;opacity:0;position:relative;z-index:1}.hero-cta .btn{padding:var(--space-4) var(--space-8);font-size:var(--text-lg)}.hero-cta .btn.disabled{opacity:.5;pointer-events:none;cursor:not-allowed}.hero-cta .btn.disabled small{font-size:var(--text-xs);margin-left:var(--space-2)}.features{padding:var(--space-24) var(--space-4);position:relative}.features h2{text-align:center;margin-bottom:var(--space-16);font-size:var(--text-4xl);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-6);max-width:1200px;margin:0 auto}.feature-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius-2xl);padding:var(--space-8);transition:all var(--transition-normal);position:relative;overflow:hidden}.feature-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-primary);transform:scaleX(0);transition:transform var(--transition-normal)}.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl),var(--shadow-glow);border-color:var(--color-primary-light)}.feature-card:hover:before{transform:scaleX(1)}.feature-icon{font-size:3rem;margin-bottom:var(--space-4);display:inline-block;animation:float 3s ease-in-out infinite}.feature-card:nth-child(2) .feature-icon{animation-delay:.5s}.feature-card:nth-child(3) .feature-icon{animation-delay:1s}.feature-card:nth-child(4) .feature-icon{animation-delay:1.5s}.feature-card h3{margin-bottom:var(--space-3);color:var(--color-text-primary);font-size:var(--text-xl)}.feature-card p{color:var(--color-text-secondary);margin-bottom:var(--space-6);line-height:var(--line-height-relaxed)}.feature-link{font-weight:600;color:var(--color-primary-light);display:inline-flex;align-items:center;gap:var(--space-2);text-decoration:none}.feature-link:after{content:"→";transition:transform var(--transition-fast)}.feature-link:hover:after{transform:translate(4px)}.feature-link.disabled{opacity:.5;pointer-events:none;cursor:not-allowed;color:var(--color-text-muted)}.curriculum{padding:var(--space-24) var(--space-4);text-align:center;position:relative}.curriculum:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,var(--color-secondary-glow) 0%,transparent 60%);pointer-events:none}.curriculum h2{margin-bottom:var(--space-6);font-size:var(--text-4xl);position:relative;z-index:1}.curriculum-intro{max-width:600px;margin:0 auto var(--space-10);color:var(--color-text-secondary);font-size:var(--text-lg);line-height:var(--line-height-relaxed);position:relative;z-index:1}.competencies{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-4);position:relative;z-index:1}.competency-tag{padding:var(--space-3) var(--space-6);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-full);font-size:var(--text-sm);font-weight:600;color:var(--color-text-primary);transition:all var(--transition-fast);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.competency-tag:hover{background:var(--gradient-primary);border-color:transparent;transform:translateY(-2px);box-shadow:var(--shadow-glow)}@media(max-width:768px){.hero{padding:var(--space-16) var(--space-4)}.hero h1{font-size:var(--text-4xl)}.hero-subtitle{font-size:var(--text-xl)}.features{padding:var(--space-16) var(--space-4)}.features h2,.curriculum h2{font-size:var(--text-3xl)}.features-grid{grid-template-columns:1fr}.feature-card{padding:var(--space-6)}.hero-cta{flex-direction:column;align-items:center}.hero-cta .btn{width:100%;max-width:300px}}.lab-page{padding:var(--space-8) 0;min-height:100vh;background:var(--color-bg)}.lab-header{text-align:center;margin-bottom:var(--space-8)}.lab-header h1{margin-bottom:var(--space-4);font-size:var(--text-4xl);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 0 2em var(--color-primary-glow))}.lab-instructions{color:var(--color-text-secondary);max-width:600px;margin:0 auto;font-size:var(--text-lg);font-weight:500}.lab-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:var(--space-3);margin-bottom:var(--space-8);max-width:900px;margin-left:auto;margin-right:auto}.lab-card{display:flex;flex-direction:column;align-items:center;gap:var(--space-2);padding:var(--space-4);background:var(--glass-bg);border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--radius-xl);transition:all var(--transition-normal);cursor:pointer;position:relative;overflow:hidden}.lab-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at center,var(--lab-color) 0%,transparent 70%);opacity:0;transition:opacity var(--transition-normal);z-index:0}.lab-card:hover{transform:translateY(-4px);border-color:var(--lab-color);box-shadow:0 0 20px -5px var(--lab-color)}.lab-card:hover:before{opacity:.1}.lab-card.active{background:var(--glass-bg-light);border-color:var(--lab-color);box-shadow:0 0 30px -5px var(--lab-color);transform:translateY(-2px)}.lab-card.active:before{opacity:.15}.lab-card .lab-icon{font-size:var(--text-4xl);line-height:1;z-index:1;filter:drop-shadow(0 0 10px rgba(0,0,0,.5));transition:transform var(--transition-normal)}.lab-card:hover .lab-icon,.lab-card.active .lab-icon{transform:scale(1.15)}.lab-card .lab-name{font-size:var(--text-sm);font-weight:700;text-align:center;color:var(--color-text-primary);z-index:1}.lab-card:focus-visible{outline:none;box-shadow:var(--focus-ring)}.lab-content{min-height:400px;background:var(--glass-bg);border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:var(--radius-2xl);padding:var(--space-6);box-shadow:var(--shadow-2xl);position:relative;overflow:hidden}.lab-content:after{content:"";position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,var(--color-primary-glow) 0%,transparent 70%);opacity:.1;pointer-events:none}.lab-panel{animation:fadeIn .3s ease;position:relative;z-index:1}.lab-panel-header{display:flex;align-items:center;gap:var(--space-4);margin-bottom:var(--space-6);padding-bottom:var(--space-4);border-bottom:1px solid var(--glass-border)}.lab-panel-header .panel-icon{font-size:var(--text-5xl);filter:drop-shadow(0 0 10px rgba(255,255,255,.2))}.lab-panel-header h2{margin:0;font-size:var(--text-2xl);color:var(--color-text-primary);text-shadow:0 0 10px rgba(255,255,255,.3)}.lab-panel-header p{margin:var(--space-1) 0 0;color:var(--color-text-secondary);font-size:var(--text-base);font-weight:500}@media(prefers-reduced-motion:reduce){.lab-panel,.lab-card,.lab-icon{animation:none;transition:none}}@media(max-width:640px){.lab-grid{grid-template-columns:repeat(3,1fr);gap:var(--space-2)}.lab-card{padding:var(--space-3)}.lab-card .lab-icon{font-size:var(--text-2xl)}.lab-content{padding:var(--space-4);border-radius:var(--radius-xl)}.lab-panel-header{flex-direction:column;text-align:center}}.mission-page{padding-bottom:var(--space-24)}.mission-header{text-align:center;margin-bottom:var(--space-12)}.mission-header h1{margin-bottom:var(--space-4);font-size:var(--text-5xl);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.mission-subtitle{font-size:var(--text-xl);color:var(--color-text-secondary);max-width:600px;margin:0 auto}.points-display{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-3);padding:var(--space-3) var(--space-8);margin-bottom:var(--space-12);background:#f59e0b1a;border:1px solid rgba(245,158,11,.3);border-radius:var(--radius-full);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 0 20px #f59e0b33}.points-icon{font-size:var(--text-2xl);filter:drop-shadow(0 0 5px rgba(245,158,11,.5))}.points-value{font-size:var(--text-3xl);font-weight:800;color:#fbbf24;text-shadow:0 0 10px rgba(251,191,36,.3)}.points-label{font-size:var(--text-base);color:#fcd34d;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.difficulty-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-6);max-width:1000px;margin:0 auto}.difficulty-card{display:flex;flex-direction:column;align-items:center;padding:var(--space-8);border:1px solid var(--glass-border);border-radius:var(--radius-2xl);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);transition:all var(--transition-normal);cursor:pointer;position:relative;overflow:hidden}.difficulty-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--level-color);box-shadow:0 0 10px var(--level-color);opacity:.8}.difficulty-card:hover{transform:translateY(-8px);box-shadow:0 10px 30px -5px #00000080,0 0 20px -5px var(--level-color);border-color:var(--level-color);background:var(--glass-bg-light)}.difficulty-icon{font-size:4rem;margin-bottom:var(--space-6);filter:drop-shadow(0 0 15px rgba(255,255,255,.2));transition:transform var(--transition-bounce)}.difficulty-card:hover .difficulty-icon{transform:scale(1.1) rotate(5deg)}.difficulty-card h3{margin:0 0 var(--space-2);font-size:var(--text-2xl);color:var(--color-text-primary)}.difficulty-sublabel{color:var(--color-text-muted);font-size:var(--text-sm);margin-bottom:var(--space-6)}.difficulty-progress{width:100%;margin-top:auto;display:flex;align-items:center;gap:var(--space-3);color:var(--color-text-secondary);font-weight:600;font-size:var(--text-sm)}.mini-progress-bar{flex:1;height:6px;background:#ffffff1a;border-radius:var(--radius-full);overflow:hidden}.mini-progress-fill{height:100%;background:var(--level-color);border-radius:var(--radius-full);box-shadow:0 0 8px var(--level-color)}.level-complete-badge{position:absolute;top:var(--space-3);right:var(--space-3);background:var(--color-success);color:#fff;font-size:var(--text-xs);font-weight:700;padding:var(--space-1) var(--space-2);border-radius:var(--radius-md);box-shadow:0 0 10px var(--color-success-glow)}.back-button{display:inline-flex;align-items:center;gap:var(--space-2);color:var(--color-text-secondary);font-weight:600;padding:var(--space-2) var(--space-4);margin-bottom:var(--space-8);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.back-button:hover{color:var(--color-text-primary);background:#ffffff1a}.level-header{text-align:center;margin-bottom:var(--space-12)}.level-header .level-icon{font-size:3rem;display:block;margin-bottom:var(--space-4)}.level-header h1{font-size:var(--text-4xl);color:var(--level-color);text-shadow:0 0 20px rgba(0,0,0,.5)}.challenges-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-4);max-width:1000px;margin:0 auto}.challenge-card{display:flex;flex-direction:column;padding:var(--space-6);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-normal);position:relative;overflow:hidden;text-align:left}.challenge-card:hover{background:var(--glass-bg-light);transform:translateY(-4px);border-color:var(--level-color);box-shadow:0 4px 20px #0003,0 0 15px -5px var(--level-color)}.challenge-card.completed{border-color:var(--color-success);background:linear-gradient(135deg,rgba(16,185,129,.1) 0%,transparent 100%)}.challenge-number{font-size:var(--text-3xl);font-weight:800;color:#ffffff1a;position:absolute;top:-5px;right:10px;line-height:1}.challenge-card h4{margin:var(--space-2) 0 var(--space-4);font-size:var(--text-lg);color:var(--color-text-primary);padding-right:var(--space-8)}.challenge-meta{display:flex;justify-content:space-between;align-items:center;margin-top:auto}.challenge-points{font-size:var(--text-sm);font-weight:700;color:var(--level-color);background:#0003;padding:var(--space-1) var(--space-3);border-radius:var(--radius-full)}.completed-check{color:var(--color-success);font-weight:900;font-size:var(--text-lg);text-shadow:0 0 10px var(--color-success)}.challenge-container{max-width:800px;margin:0 auto;padding:var(--space-8);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-2xl);box-shadow:var(--shadow-2xl);position:relative;overflow:hidden}.challenge-container:before{content:"";position:absolute;top:0;left:0;width:6px;height:100%;background:var(--level-color);box-shadow:0 0 15px var(--level-color)}.challenge-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-6)}.challenge-difficulty-badge{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border-radius:var(--radius-full);font-size:var(--text-sm);font-weight:700;background:#ffffff1a!important;color:var(--level-color)!important;border:1px solid var(--level-color);box-shadow:0 0 10px #0003}.challenge-points-badge{font-size:var(--text-lg);font-weight:700;color:#fbbf24;text-shadow:0 0 10px rgba(251,191,36,.3)}.challenge-title{font-size:var(--text-3xl);margin-bottom:var(--space-4);color:var(--color-text-primary)}.challenge-description{font-size:var(--text-xl);line-height:var(--line-height-relaxed);color:var(--color-text-secondary);margin-bottom:var(--space-8)}.answer-section{display:flex;gap:var(--space-4);margin-bottom:var(--space-6)}.answer-input{flex:1;font-size:var(--text-xl);padding:var(--space-4);background:#0000004d;border:2px solid var(--glass-border);color:#fff;border-radius:var(--radius-xl)}.answer-input:focus{background:#00000080;border-color:var(--color-primary);box-shadow:0 0 0 4px #6366f133}.answer-input.success{border-color:var(--color-success);background:#10b9811a}.answer-input.error{border-color:var(--color-error);background:#ef44441a}.check-btn{padding:0 var(--space-8);font-size:var(--text-lg);border-radius:var(--radius-xl)}.feedback{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4);border-radius:var(--radius-xl);margin-bottom:var(--space-6);animation:fadeIn .3s ease-out}.feedback.success{background:#10b98133;border:1px solid rgba(16,185,129,.3);color:#fff}.feedback.error{background:#ef444433;border:1px solid rgba(239,68,68,.3);color:#fff}.feedback-icon{font-size:var(--text-2xl)}.feedback p{margin:0;color:inherit;font-weight:500}.hint-toggle{display:inline-flex;align-items:center;gap:var(--space-2);color:var(--color-text-muted);font-size:var(--text-sm);margin-top:var(--space-2)}.hint-toggle:hover{color:var(--color-text-primary)}.hint-box{margin-top:var(--space-4);padding:var(--space-4);background:#f59e0b1a;border:1px solid rgba(245,158,11,.2);border-radius:var(--radius-lg);color:#fbbf24;font-size:var(--text-sm);animation:fadeIn .3s ease-out}.success-banner{margin-top:var(--space-8);padding:var(--space-6);background:#10b98133;border:1px solid var(--color-success);border-radius:var(--radius-2xl);display:flex;flex-direction:column;align-items:center;text-align:center;box-shadow:0 0 30px #10b98133;animation:zoomIn .5s cubic-bezier(.175,.885,.32,1.275)}.success-banner span{font-size:3rem;margin-bottom:var(--space-2);filter:drop-shadow(0 0 10px rgba(16,185,129,.5))}.success-banner p{font-size:var(--text-xl);font-weight:700;max-width:none;margin:0;color:#fff}@media(max-width:640px){.answer-section{flex-direction:column}.check-btn{width:100%;padding:var(--space-4)}}.theory-page{padding:var(--space-8) 0 var(--space-24);min-height:100vh}.theory-header{text-align:center;margin-bottom:var(--space-16);padding:var(--space-8) 0}.theory-header h1{font-size:var(--text-5xl);margin-bottom:var(--space-4);background:linear-gradient(135deg,#667eea,#764ba2,#f472b6 60%,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:gradientShift 8s ease infinite;background-size:200% 200%}.theory-subtitle{font-size:var(--text-xl);color:var(--color-text-secondary);margin-bottom:var(--space-4)}.theory-description{color:var(--color-text-muted);max-width:600px;margin:0 auto}.theory-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:var(--space-6);max-width:1200px;margin:0 auto}.theory-card{background:linear-gradient(145deg,#ffffff14,#ffffff08);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-left:4px solid var(--card-color);border-radius:var(--radius-2xl);padding:var(--space-6);cursor:pointer;transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.theory-card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,color-mix(in srgb,var(--card-color) 15%,transparent) 0%,transparent 50%);opacity:0;transition:opacity .4s ease;pointer-events:none}.theory-card:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,color-mix(in srgb,var(--card-color) 10%,transparent) 0%,transparent 60%);opacity:0;transition:opacity .4s ease;pointer-events:none}.theory-card:hover{transform:translateY(-6px) scale(1.01);box-shadow:0 20px 40px -15px color-mix(in srgb,var(--card-color) 30%,transparent),0 0 60px -20px var(--card-color);border-color:color-mix(in srgb,var(--card-color) 60%,white)}.theory-card:hover:before,.theory-card:hover:after{opacity:1}.theory-card.expanded{grid-column:1 / -1;background:linear-gradient(145deg,#ffffff1f,#ffffff0d);border-left-width:6px}.theory-card.expanded:before{opacity:1}.card-header{display:flex;align-items:center;gap:var(--space-4);position:relative;z-index:1}.card-icon{font-size:2rem;width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,color-mix(in srgb,var(--card-color) 25%,transparent),color-mix(in srgb,var(--card-color) 10%,transparent));border-radius:var(--radius-xl);border:2px solid color-mix(in srgb,var(--card-color) 40%,transparent);transition:all .3s ease}.theory-card:hover .card-icon{transform:scale(1.1) rotate(5deg);border-color:var(--card-color);box-shadow:0 0 20px color-mix(in srgb,var(--card-color) 40%,transparent)}.card-title{flex:1;font-size:var(--text-xl);font-weight:600;color:var(--color-text-primary);margin:0}.card-toggle{font-size:var(--text-2xl);font-weight:300;color:var(--card-color);width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--card-color) 10%,transparent);border:2px solid color-mix(in srgb,var(--card-color) 30%,transparent);border-radius:var(--radius-lg);transition:all .3s ease}.theory-card:hover .card-toggle{background:var(--card-color);color:#fff;transform:scale(1.1)}.card-content{max-height:0;overflow:hidden;opacity:0;transition:all .5s cubic-bezier(.4,0,.2,1);position:relative;z-index:1}.card-content.visible{max-height:3000px;opacity:1;margin-top:var(--space-6);padding-top:var(--space-6);border-top:2px solid color-mix(in srgb,var(--card-color) 30%,transparent)}.content-section{color:var(--color-text-secondary);animation:fadeSlideIn .5s ease forwards}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.content-section h4{color:var(--color-text-primary);font-size:var(--text-xl);font-weight:700;margin:var(--space-8) 0 var(--space-4);display:flex;align-items:center;gap:var(--space-3)}.content-section h4:before{content:"";width:4px;height:24px;background:var(--card-color, linear-gradient(180deg, #667eea, #764ba2));border-radius:2px}.content-section h4:first-child{margin-top:0}.content-section h5{color:var(--color-text-primary);font-size:var(--text-lg);font-weight:600;margin:var(--space-4) 0 var(--space-2)}.content-section p{margin-bottom:var(--space-3);line-height:var(--line-height-relaxed);font-size:var(--text-base)}.fraction-visual{display:flex;flex-direction:column;align-items:center;gap:var(--space-6);padding:var(--space-8);background:linear-gradient(135deg,#667eea1a,#764ba21a,#f472b61a);border:2px solid rgba(102,126,234,.2);border-radius:var(--radius-2xl);margin:var(--space-6) 0;position:relative;overflow:hidden}.fraction-visual:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#667eea,#764ba2,#f472b6)}.big-fraction{display:flex;flex-direction:column;align-items:center;font-size:4rem;font-weight:800;color:var(--color-text-primary)}.big-fraction .numerator,.big-fraction .denominator{padding:var(--space-2) var(--space-8);transition:all .3s ease}.big-fraction .numerator{color:#667eea}.big-fraction .denominator{color:#f472b6}.big-fraction .fraction-line{width:100px;height:6px;background:linear-gradient(90deg,#667eea,#f472b6);border-radius:var(--radius-full);box-shadow:0 0 20px #667eea80}.fraction-labels{display:flex;flex-direction:column;gap:var(--space-3);text-align:left}.label{font-size:var(--text-base);padding:var(--space-2) var(--space-4);border-radius:var(--radius-lg);font-weight:500}.label.num-label{background:#667eea26;color:#818cf8;border-left:3px solid #667eea}.label.den-label{background:#f472b626;color:#f472b6;border-left:3px solid #f472b6}.meanings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--space-4);margin:var(--space-6) 0}.meaning-card{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);padding:var(--space-5);transition:all .3s ease;position:relative;overflow:hidden}.meaning-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#667eea,#06b6d4);transform:scaleX(0);transition:transform .3s ease}.meaning-card:hover{border-color:#667eea66;transform:translateY(-4px);box-shadow:0 10px 30px -10px #667eea4d}.meaning-card:hover:before{transform:scaleX(1)}.meaning-card h5{margin-top:0;font-size:var(--text-lg);color:var(--color-text-primary);display:flex;align-items:center;gap:var(--space-2)}.meaning-card .example{font-size:var(--text-sm);color:var(--color-text-muted);margin-top:var(--space-3);padding:var(--space-3);background:#0003;border-radius:var(--radius-lg);border-left:3px solid #06b6d4}.tip-box{background:linear-gradient(135deg,#10b98126,#06b6d426);border:2px solid rgba(16,185,129,.3);border-left:5px solid #10b981;border-radius:var(--radius-xl);padding:var(--space-5);margin:var(--space-8) 0;font-size:var(--text-base);position:relative;overflow:hidden}.tip-box:before{content:"💡";position:absolute;top:-10px;right:-10px;font-size:4rem;opacity:.15}.warning-box{background:linear-gradient(135deg,#f59e0b26,#ef444426);border:2px solid rgba(245,158,11,.3);border-left:5px solid #f59e0b;border-radius:var(--radius-xl);padding:var(--space-5);margin:var(--space-8) 0;font-size:var(--text-base);position:relative;overflow:hidden}.warning-box:before{content:"⚠️";position:absolute;top:-10px;right:-10px;font-size:4rem;opacity:.15}.type-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-5);margin:var(--space-6) 0}.type-card{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:var(--space-5);text-align:center;transition:all .3s ease;position:relative;overflow:hidden}.type-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;border-radius:var(--radius-2xl) var(--radius-2xl) 0 0}.type-card.proper:before{background:linear-gradient(90deg,#10b981,#34d399)}.type-card.improper:before{background:linear-gradient(90deg,#f59e0b,#fbbf24)}.type-card.unit:before{background:linear-gradient(90deg,#6366f1,#818cf8)}.type-card:hover{transform:translateY(-6px) scale(1.02)}.type-card.proper:hover{border-color:#10b981;box-shadow:0 15px 40px -15px #10b98166}.type-card.improper:hover{border-color:#f59e0b;box-shadow:0 15px 40px -15px #f59e0b66}.type-card.unit:hover{border-color:#6366f1;box-shadow:0 15px 40px -15px #6366f166}.type-card h5{margin-top:var(--space-2);font-size:var(--text-lg);font-weight:700}.type-card .fraction-example{font-size:var(--text-3xl);margin:var(--space-4) 0;padding:var(--space-4);background:#0003;border-radius:var(--radius-xl)}.type-card .value{color:var(--color-primary-light);font-weight:700;font-size:var(--text-base)}.type-card .example{font-size:var(--text-sm);color:var(--color-text-muted);margin-top:var(--space-2);font-weight:500}.fraction-display{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;font-family:var(--font-mono);font-weight:700;padding:0 var(--space-1)}.fraction-display .num{padding:0 var(--space-2);color:#818cf8}.fraction-display .line{width:100%;height:2px;background:linear-gradient(90deg,#667eea,#f472b6);border-radius:1px}.fraction-display .den{padding:0 var(--space-2);color:#f472b6}.conversion-example{background:linear-gradient(145deg,#667eea1a,#f472b61a);border:2px solid rgba(102,126,234,.2);border-radius:var(--radius-2xl);padding:var(--space-6);margin:var(--space-6) 0}.conversion-step{display:flex;align-items:center;justify-content:center;gap:var(--space-5);flex-wrap:wrap;font-size:var(--text-xl)}.arrow{color:#06b6d4;font-size:var(--text-2xl);font-weight:700}.result{padding:var(--space-2) var(--space-4);background:#06b6d426;border-radius:var(--radius-lg);color:#22d3ee}.mixed-number{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);background:linear-gradient(135deg,#10b98133,#06b6d433);border-radius:var(--radius-xl);border:2px solid rgba(16,185,129,.3)}.mixed-number .whole{font-size:var(--text-3xl);font-weight:800;color:#10b981}.mixed-number .fraction-part{display:flex;flex-direction:column;font-size:var(--text-base)}.equivalence-demo{background:linear-gradient(145deg,#f472b61a,#06b6d41a);border:2px solid rgba(244,114,182,.2);border-radius:var(--radius-2xl);padding:var(--space-8);margin:var(--space-6) 0}.fractions-row{display:flex;align-items:center;justify-content:center;gap:var(--space-6);flex-wrap:wrap}.frac-visual{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-4);background:#0003;border-radius:var(--radius-xl);transition:all .3s ease}.frac-visual:hover{transform:scale(1.05)}.frac-visual .fraction-display{font-size:var(--text-2xl)}.visual-bar{width:100px;height:16px;background:#ffffff1a;border-radius:var(--radius-full);overflow:hidden;border:2px solid rgba(255,255,255,.2)}.visual-bar .filled{height:100%;background:linear-gradient(90deg,#667eea,#f472b6);border-radius:var(--radius-full);transition:width .5s ease}.equals{font-size:var(--text-3xl);color:#10b981;font-weight:800;text-shadow:0 0 20px rgba(16,185,129,.5)}.formula-box{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:2px solid rgba(255,255,255,.15);border-radius:var(--radius-2xl);padding:var(--space-5);margin:var(--space-5) 0;display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;font-size:var(--text-xl);font-family:var(--font-mono);transition:all .3s ease}.formula-box:hover{border-color:#667eea66;box-shadow:0 10px 30px -10px #667eea4d}.formula-box.highlight{background:linear-gradient(135deg,#667eea26,#06b6d426);border-color:#667eea66;box-shadow:0 0 30px -10px #667eea66}.example-steps{display:flex;flex-direction:column;gap:var(--space-4);margin:var(--space-6) 0}.step{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap;padding:var(--space-3);background:#ffffff08;border-radius:var(--radius-xl);transition:all .3s ease}.step:hover{background:#ffffff0f}.step-num{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:var(--radius-full);font-size:var(--text-base);font-weight:800;flex-shrink:0;box-shadow:0 4px 15px #667eea66}.method-box{background:linear-gradient(145deg,#06b6d41a,#667eea1a);border:2px solid rgba(6,182,212,.2);border-radius:var(--radius-2xl);padding:var(--space-6);margin:var(--space-6) 0}.method-box ol{margin:var(--space-3) 0;padding-left:var(--space-8)}.method-box li{margin:var(--space-3) 0;padding-left:var(--space-2)}.method-box li::marker{color:#06b6d4;font-weight:700}.comparison-example{background:linear-gradient(145deg,#8b5cf61a,#06b6d41a);border:2px solid rgba(139,92,246,.2);border-radius:var(--radius-2xl);padding:var(--space-6);margin:var(--space-5) 0;display:flex;align-items:center;justify-content:center;gap:var(--space-5);flex-wrap:wrap;font-size:var(--text-xl)}.comparison-op{font-size:var(--text-3xl);font-weight:800;padding:var(--space-3) var(--space-4);border-radius:var(--radius-xl)}.comparison-op.greater{color:#10b981;background:#10b98126}.comparison-op.less{color:#ef4444;background:#ef444426}.explanation{color:var(--color-text-muted);font-size:var(--text-sm);padding:var(--space-2) var(--space-3);background:#0003;border-radius:var(--radius-lg)}.example-box:hover{border-color:#667eea4d}.example-box .example{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;font-size:var(--text-xl);padding:var(--space-4);background:#00000026;border-radius:var(--radius-xl);margin-top:var(--space-3)}.cross-simplify{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-4);background:#00000026;border-radius:var(--radius-xl)}.cross-simplify .fractions{display:flex;align-items:center;gap:var(--space-4)}.cross-simplify .crossed{text-decoration:line-through;color:var(--color-text-muted);opacity:.5}.paren{font-size:var(--text-2xl);color:#f472b6}.power{font-size:var(--text-sm);vertical-align:super;margin-left:2px;color:#06b6d4;font-weight:700}.rules-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-5);margin:var(--space-6) 0}.rule-card{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:var(--space-5);text-align:center;transition:all .3s ease}.rule-card:hover{border-color:#667eea66;transform:translateY(-4px);box-shadow:0 10px 30px -10px #667eea4d}.rule-card h5{margin-top:0;color:#818cf8;font-size:var(--text-base)}.rule-card .formula{font-family:var(--font-mono);font-size:var(--text-lg);padding:var(--space-3);background:#0003;border-radius:var(--radius-lg);margin-top:var(--space-3)}.solved-example{background:linear-gradient(145deg,#667eea1a,#8b5cf61a);border:2px solid rgba(102,126,234,.2);border-radius:var(--radius-2xl);padding:var(--space-8);margin:var(--space-6) 0}.solved-example .expression{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;font-size:var(--text-xl);padding:var(--space-5);background:#0003;border-radius:var(--radius-xl);margin-bottom:var(--space-6);border:2px solid rgba(102,126,234,.3)}.solved-example .steps{display:flex;flex-direction:column;gap:var(--space-4)}.solved-example .step{background:#ffffff0d;border-radius:var(--radius-xl);padding:var(--space-4) var(--space-5);border-left:4px solid}.solved-example .step:nth-child(1){border-color:#667eea}.solved-example .step:nth-child(2){border-color:#f59e0b}.solved-example .step:nth-child(3){border-color:#10b981}.decimal-types{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-5);margin:var(--space-6) 0}.type-item{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:var(--space-5);transition:all .3s ease}.type-item:hover{border-color:#06b6d466;transform:translateY(-4px)}.type-item h5{margin-top:0;color:#22d3ee;font-size:var(--text-lg)}.type-item .example{font-family:var(--font-mono);color:var(--color-text-primary);font-size:var(--text-xl);margin:var(--space-3) 0;padding:var(--space-3);background:#06b6d41a;border-radius:var(--radius-lg);text-align:center}.type-item .condition{font-size:var(--text-sm);color:var(--color-text-muted);padding:var(--space-2) var(--space-3);background:#0003;border-radius:var(--radius-lg)}.conversion-steps{display:flex;flex-direction:column;gap:var(--space-5);margin:var(--space-6) 0}.step-card{background:linear-gradient(145deg,#ffffff0f,#ffffff05);border:2px solid rgba(255,255,255,.1);border-left:5px solid;border-radius:var(--radius-2xl);padding:var(--space-5);transition:all .3s ease}.step-card:nth-child(1){border-left-color:#10b981}.step-card:nth-child(2){border-left-color:#f59e0b}.step-card:nth-child(3){border-left-color:#6366f1}.step-card:hover{transform:translate(8px)}.step-card h5{margin-top:0;font-size:var(--text-lg)}.step-card:nth-child(1) h5{color:#34d399}.step-card:nth-child(2) h5{color:#fbbf24}.step-card:nth-child(3) h5{color:#818cf8}.step-card ol{margin:var(--space-3) 0;padding-left:var(--space-6)}.step-card li{margin:var(--space-2) 0}.magnitude-types{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--space-5);margin:var(--space-6) 0}.magnitude-card{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:var(--space-6);transition:all .3s ease}.magnitude-card.direct{border-top:4px solid #10b981}.magnitude-card.inverse{border-top:4px solid #f59e0b}.magnitude-card.direct:hover{border-color:#10b981;box-shadow:0 15px 40px -15px #10b9814d}.magnitude-card.inverse:hover{border-color:#f59e0b;box-shadow:0 15px 40px -15px #f59e0b4d}.magnitude-card h5{margin-top:0;font-size:var(--text-xl)}.magnitude-card.direct h5{color:#34d399}.magnitude-card.inverse h5{color:#fbbf24}.magnitude-card .formula{background:#0003;border-radius:var(--radius-xl);padding:var(--space-3) var(--space-4);margin:var(--space-4) 0;font-family:var(--font-mono);text-align:center;font-size:var(--text-lg)}.magnitude-card .examples{font-size:var(--text-sm);color:var(--color-text-muted);display:flex;flex-direction:column;gap:var(--space-2)}.magnitude-card .examples p{margin:0;padding:var(--space-2);background:#ffffff08;border-radius:var(--radius-lg)}.rule-three-example{background:linear-gradient(145deg,#f472b61a,#667eea1a);border:2px solid rgba(244,114,182,.2);border-radius:var(--radius-2xl);padding:var(--space-8);margin:var(--space-6) 0}.rule-three-example .setup{display:flex;flex-direction:column;gap:var(--space-3);margin:var(--space-5) 0;padding:var(--space-5);background:#0003;border-radius:var(--radius-xl)}.rule-three-example .proportion{display:flex;align-items:center;justify-content:center;gap:var(--space-5);font-family:var(--font-mono);font-size:var(--text-xl);padding:var(--space-2)}.rule-three-example .solution{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;margin-top:var(--space-5);padding:var(--space-5);background:linear-gradient(135deg,#10b98126,#06b6d426);border-radius:var(--radius-xl);border:2px solid rgba(16,185,129,.3);font-size:var(--text-xl)}.proportion-box{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;padding:var(--space-6);background:linear-gradient(135deg,#667eea1a,#f472b61a);border:2px solid rgba(102,126,234,.2);border-radius:var(--radius-2xl);margin:var(--space-5) 0;font-size:var(--text-2xl);font-family:var(--font-mono)}.percent-fraction{display:flex;align-items:center;justify-content:center;gap:var(--space-5);font-size:var(--text-2xl);margin:var(--space-6) 0;padding:var(--space-6);background:linear-gradient(135deg,#8b5cf61a,#f472b61a);border:2px solid rgba(139,92,246,.2);border-radius:var(--radius-2xl)}.percent{font-size:var(--text-4xl);font-weight:800;background:linear-gradient(135deg,#8b5cf6,#f472b6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.calculation-examples{display:flex;flex-direction:column;gap:var(--space-5);margin:var(--space-6) 0}.calculation-examples .example-box{margin:0}.calculation-examples .calculation{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;margin-top:var(--space-3);font-size:var(--text-xl);font-family:var(--font-mono)}.increase-decrease{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-5);margin:var(--space-6) 0}.operation-card{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:var(--space-5);transition:all .3s ease}.operation-card.increase{border-top:4px solid #10b981}.operation-card.decrease{border-top:4px solid #ef4444}.operation-card.increase:hover{border-color:#10b981;box-shadow:0 15px 40px -15px #10b9814d}.operation-card.decrease:hover{border-color:#ef4444;box-shadow:0 15px 40px -15px #ef44444d}.operation-card h5{margin-top:0;font-size:var(--text-xl)}.operation-card.increase h5{color:#34d399}.operation-card.decrease h5{color:#f87171}.operation-card .example{background:#0003;border-radius:var(--radius-xl);padding:var(--space-4);margin-top:var(--space-3);font-family:var(--font-mono);font-size:var(--text-base)}.equivalents-table{background:linear-gradient(145deg,#ffffff14,#ffffff05);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);overflow:hidden;margin:var(--space-6) 0}.table-row{display:grid;grid-template-columns:1fr 1fr 1fr;padding:var(--space-4) var(--space-5);text-align:center;border-bottom:1px solid rgba(255,255,255,.1);transition:all .3s ease}.table-row:last-child{border-bottom:none}.table-row:not(.header):hover{background:#667eea1a}.table-row.header{background:linear-gradient(90deg,#667eea33,#8b5cf633);font-weight:700;color:var(--color-text-primary);font-size:var(--text-base)}[dir=rtl] .theory-card{border-left:none;border-right:4px solid var(--card-color)}[dir=rtl] .content-section h4:before{margin-left:var(--space-3);margin-right:0}[dir=rtl] .tip-box,[dir=rtl] .warning-box{border-left:none;border-right:5px solid}[dir=rtl] .tip-box{border-right-color:#10b981}[dir=rtl] .warning-box{border-right-color:#f59e0b}[dir=rtl] .step-card{border-left:none;border-right:5px solid}[dir=rtl] .step-card:nth-child(1){border-right-color:#10b981}[dir=rtl] .step-card:nth-child(2){border-right-color:#f59e0b}[dir=rtl] .step-card:nth-child(3){border-right-color:#6366f1}[dir=rtl] .label{border-left:none;border-right:3px solid}[dir=rtl] .label.num-label{border-right-color:#667eea}[dir=rtl] .label.den-label{border-right-color:#f472b6}[dir=rtl] .meaning-card .example{border-left:none;border-right:3px solid #06b6d4}[dir=rtl] .solved-example .step{border-left:none;border-right:4px solid}.priority-list{display:flex;flex-direction:column;gap:var(--space-3);margin:var(--space-6) 0}.priority-item{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4);background:linear-gradient(145deg,#ffffff0d,#ffffff05);border:2px solid rgba(255,255,255,.08);border-radius:var(--radius-xl);transition:all .3s ease}.priority-item:hover{border-color:#667eea4d;background:#ffffff14}.priority-item:nth-child(1){border-left:4px solid #ef4444}.priority-item:nth-child(2){border-left:4px solid #f59e0b}.priority-item:nth-child(3){border-left:4px solid #10b981}.priority-item:nth-child(4){border-left:4px solid #06b6d4}.priority-num{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:var(--text-lg);font-weight:800;border-radius:var(--radius-full);flex-shrink:0}.priority-item:nth-child(1) .priority-num{background:linear-gradient(135deg,#ef4444,#f97316);color:#fff}.priority-item:nth-child(2) .priority-num{background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#fff}.priority-item:nth-child(3) .priority-num{background:linear-gradient(135deg,#10b981,#34d399);color:#fff}.priority-item:nth-child(4) .priority-num{background:linear-gradient(135deg,#06b6d4,#22d3ee);color:#fff}.priority-text{font-size:var(--text-base);color:var(--color-text-secondary)}.example-box{background:linear-gradient(145deg,#ffffff0f,#ffffff05);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:var(--space-5);margin:var(--space-5) 0;transition:all .3s ease}.example-box:hover{border-color:#667eea4d;box-shadow:0 5px 20px -10px #667eea4d}.example-box .example{display:flex;align-items:center;justify-content:center;gap:var(--space-3);flex-wrap:wrap;font-size:var(--text-lg)}.example-box p{margin-bottom:var(--space-3);font-weight:600;color:var(--color-text-primary)}.solved-example{background:linear-gradient(145deg,#667eea1a,#764ba21a,#06b6d41a);border:2px solid rgba(102,126,234,.2);border-radius:var(--radius-2xl);padding:var(--space-6);margin:var(--space-6) 0;position:relative;overflow:hidden}.solved-example:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#667eea,#764ba2,#06b6d4)}.solved-example p{margin-bottom:var(--space-4);font-size:var(--text-lg);color:var(--color-text-primary)}.solved-example .expression{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;font-size:var(--text-xl);padding:var(--space-4);background:#0003;border-radius:var(--radius-xl);margin-bottom:var(--space-5)}.solved-example .steps{display:flex;flex-direction:column;gap:var(--space-3)}.solved-example .step{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap;padding:var(--space-4);background:#ffffff0a;border-radius:var(--radius-xl);border-left:4px solid rgba(102,126,234,.4);transition:all .3s ease}.solved-example .step:hover{background:#ffffff14;border-left-color:#667eea}.operation{font-size:var(--text-xl);font-weight:700;color:#f472b6;padding:0 var(--space-2)}.fraction-display.highlight{background:linear-gradient(135deg,#10b98133,#06b6d433);border:2px solid rgba(16,185,129,.4);border-radius:var(--radius-lg);padding:var(--space-2)}.fraction-display.highlight .num,.fraction-display.highlight .den{color:#10b981}.paren{font-size:var(--text-2xl);font-weight:300;color:var(--color-text-secondary)}.power{font-size:var(--text-lg);position:relative;top:-.8em;color:#f59e0b;font-weight:700}.tip-box.warning{background:linear-gradient(135deg,#f59e0b26,#ef444426);border:2px solid rgba(245,158,11,.3);border-left:5px solid #f59e0b}.tip-box.warning:before{content:"⚠️"}@media(max-width:768px){.theory-header h1{font-size:var(--text-4xl)}.theory-grid{grid-template-columns:1fr}.theory-card.expanded{grid-column:1}.meanings-grid,.type-cards{grid-template-columns:1fr}.formula-box{font-size:var(--text-base);padding:var(--space-4)}.conversion-step{flex-direction:column;gap:var(--space-3)}.fractions-row{flex-direction:column}.big-fraction{font-size:3rem}.fraction-visual{padding:var(--space-5)}.magnitude-types,.increase-decrease,.decimal-types{grid-template-columns:1fr}.comparison-example,.percent-fraction{flex-direction:column;gap:var(--space-3)}}.games-hub{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem 1rem}.games-hub .container{max-width:900px;margin:0 auto}.games-header{text-align:center;margin-bottom:2.5rem}.games-header h1{font-size:2.5rem;font-weight:800;color:#fff;text-shadow:0 4px 20px rgba(0,0,0,.3);margin-bottom:.5rem}.games-header p{font-size:1.125rem;color:#ffffffd9}.games-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.game-card{background:#fffffffa;border-radius:20px;padding:2rem;text-align:center;transition:all .3s;cursor:pointer;text-decoration:none;color:inherit;box-shadow:0 10px 30px #00000026}.game-card:hover{transform:translateY(-8px);box-shadow:0 20px 50px #00000040}.game-card-icon{font-size:4rem;margin-bottom:1rem}.game-card-title{font-size:1.5rem;font-weight:700;color:#4338ca;margin-bottom:.5rem}.game-card-description{font-size:.95rem;color:#6b7280;line-height:1.5;margin-bottom:1rem}.game-card-meta{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.game-card-tag{padding:.375rem .75rem;background:#eef2ff;color:#4338ca;border-radius:20px;font-size:.8rem;font-weight:600}.game-card-tag.objective{background:#d1fae5;color:#059669}.back-link{display:inline-flex;align-items:center;gap:.5rem;color:#fff;text-decoration:none;margin-bottom:1.5rem;font-weight:500;transition:gap .2s}.back-link:hover{gap:.75rem}@media(max-width:768px){.games-header h1{font-size:1.75rem}.game-card{padding:1.5rem}.game-card-icon{font-size:3rem}}.home-page.zenbaki-naturalak-home{padding-bottom:var(--space-24)}.zenbaki-naturalak-home .hero{text-align:center;padding:var(--space-24) var(--space-4);position:relative;overflow:hidden}.zenbaki-naturalak-home .hero:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:radial-gradient(circle,var(--color-primary-glow) 0%,transparent 70%);pointer-events:none;animation:pulse 4s ease-in-out infinite}.zenbaki-naturalak-home .hero h1{font-size:var(--text-6xl);margin-bottom:var(--space-6);background:linear-gradient(135deg,#fff 0%,var(--color-primary-light) 50%,var(--color-secondary-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeIn .8s ease-out forwards;position:relative;z-index:1}.zenbaki-naturalak-home .hero-subtitle{font-size:var(--text-2xl);color:var(--color-text-secondary);margin-bottom:var(--space-6);animation:fadeIn .8s ease-out .2s forwards;opacity:0;position:relative;z-index:1}.zenbaki-naturalak-home .hero-description{font-size:var(--text-lg);color:var(--color-text-muted);max-width:600px;margin:0 auto var(--space-12);line-height:1.6;animation:fadeIn .8s ease-out .4s forwards;opacity:0;position:relative;z-index:1}.zenbaki-naturalak-home .hero-cta{display:flex;gap:var(--space-6);justify-content:center;animation:fadeIn .8s ease-out .6s forwards;opacity:0;position:relative;z-index:1;flex-wrap:wrap}.zenbaki-naturalak-home .hero-cta .btn{padding:var(--space-4) var(--space-8);font-size:var(--text-lg)}.zenbaki-naturalak-home .features{padding:var(--space-24) var(--space-4);background:linear-gradient(to bottom,transparent,rgba(255,255,255,.02));position:relative}.zenbaki-naturalak-home .features h2{text-align:center;font-size:var(--text-4xl);margin-bottom:var(--space-16);color:var(--color-text)}.zenbaki-naturalak-home .features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-8);max-width:1200px;margin:0 auto}.zenbaki-naturalak-home .feature-card{padding:var(--space-8);text-align:left;display:flex;flex-direction:column;transition:transform .3s ease,background .3s ease;border-top:1px solid rgba(255,255,255,.1)}.zenbaki-naturalak-home .feature-card:hover{transform:translateY(-5px);background:#ffffff0d}.zenbaki-naturalak-home .feature-icon{font-size:3rem;margin-bottom:var(--space-6);background:linear-gradient(135deg,var(--color-primary-light),var(--color-secondary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block}.zenbaki-naturalak-home .feature-card h3{font-size:var(--text-xl);margin-bottom:var(--space-4);color:var(--color-text)}.zenbaki-naturalak-home .feature-card p{color:var(--color-text-secondary);line-height:1.6;margin-bottom:var(--space-6);flex-grow:1}.zenbaki-naturalak-home .feature-link{color:var(--color-primary-light);text-decoration:none;font-weight:500;display:inline-flex;align-items:center;transition:color .3s ease;align-self:flex-start}.zenbaki-naturalak-home .feature-link:hover{color:var(--color-primary)}.zenbaki-naturalak-home .curriculum{padding:var(--space-24) var(--space-4);text-align:center;max-width:900px;margin:0 auto}.zenbaki-naturalak-home .curriculum h2{font-size:var(--text-4xl);margin-bottom:var(--space-6)}.zenbaki-naturalak-home .curriculum-intro{color:var(--color-text-secondary);font-size:var(--text-lg);line-height:1.6;margin-bottom:var(--space-12)}.zenbaki-naturalak-home .competencies{display:flex;justify-content:center;gap:var(--space-6);flex-wrap:wrap}.zenbaki-naturalak-home .competency-card{padding:var(--space-6) var(--space-8);display:flex;align-items:center;gap:var(--space-4);border-radius:var(--radius-full)}.zenbaki-naturalak-home .competency-icon{font-size:1.5rem}.zenbaki-naturalak-home .competency-card h4{margin:0;font-weight:500;color:var(--color-text)}@keyframes pulse{0%{transform:translate(-50%,-50%) scale(.95);opacity:.5}50%{transform:translate(-50%,-50%) scale(1.05);opacity:.8}to{transform:translate(-50%,-50%) scale(.95);opacity:.5}}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.zenbaki-naturalak-home .hero h1{font-size:var(--text-4xl)}.zenbaki-naturalak-home .hero-subtitle{font-size:var(--text-xl)}.zenbaki-naturalak-home .hero-cta{flex-direction:column}.zenbaki-naturalak-home .hero-cta .btn{width:100%;text-align:center;justify-content:center}.zenbaki-naturalak-home .features-grid{grid-template-columns:1fr}.zenbaki-naturalak-home .competency-card{width:100%;justify-content:center}}.theory-page.zenbaki-naturalak-theory{padding:var(--space-8) 0 var(--space-24);min-height:100vh}.zenbaki-naturalak-theory .theory-header{text-align:center;margin-bottom:var(--space-16);padding:var(--space-8) 0}.zenbaki-naturalak-theory .theory-header h1{font-size:var(--text-5xl);margin-bottom:var(--space-4);background:linear-gradient(135deg,#667eea,#764ba2,#f472b6 60%,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:gradientShift 8s ease infinite;background-size:200% 200%}@keyframes gradientShift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.zenbaki-naturalak-theory .theory-subtitle{font-size:var(--text-xl);color:var(--color-text-secondary);margin-bottom:var(--space-4)}.zenbaki-naturalak-theory .theory-description{color:var(--color-text-muted);max-width:600px;margin:0 auto}.zenbaki-naturalak-theory .theory-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:var(--space-6);max-width:1200px;margin:0 auto}.zenbaki-naturalak-theory .theory-card{background:linear-gradient(145deg,#ffffff14,#ffffff08);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-left:4px solid var(--card-color);border-radius:var(--radius-2xl);padding:var(--space-6);cursor:pointer;transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.zenbaki-naturalak-theory .theory-card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,color-mix(in srgb,var(--card-color) 15%,transparent) 0%,transparent 50%);opacity:0;transition:opacity .4s ease;pointer-events:none}.zenbaki-naturalak-theory .theory-card:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,color-mix(in srgb,var(--card-color) 10%,transparent) 0%,transparent 60%);opacity:0;transition:opacity .4s ease;pointer-events:none}.zenbaki-naturalak-theory .theory-card:hover{transform:translateY(-4px) scale(1.01);box-shadow:0 20px 40px #0003,0 0 40px color-mix(in srgb,var(--card-color) 20%,transparent);border-left-width:6px}.zenbaki-naturalak-theory .theory-card:hover:before,.zenbaki-naturalak-theory .theory-card:hover:after{opacity:1}.zenbaki-naturalak-theory .theory-card.expanded{grid-column:1 / -1;cursor:default;background:linear-gradient(145deg,#ffffff1f,#ffffff0d)}.zenbaki-naturalak-theory .theory-card.expanded:hover{transform:none}.zenbaki-naturalak-theory .card-header{display:flex;align-items:center;gap:var(--space-4);position:relative;z-index:1}.zenbaki-naturalak-theory .card-icon{font-size:2.5rem;filter:drop-shadow(0 4px 8px rgba(0,0,0,.2));transition:transform .4s cubic-bezier(.34,1.56,.64,1)}.zenbaki-naturalak-theory .theory-card:hover .card-icon{transform:scale(1.1) rotate(-5deg)}.zenbaki-naturalak-theory .card-title{font-size:var(--text-2xl);margin:0;flex-grow:1;background:linear-gradient(to right,#fff,#fffc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.zenbaki-naturalak-theory .card-toggle{font-size:2rem;color:var(--color-text-muted);width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#ffffff0d;transition:all .3s ease}.zenbaki-naturalak-theory .theory-card:hover .card-toggle{background:var(--card-color);color:#fff;transform:rotate(90deg)}.zenbaki-naturalak-theory .theory-card.expanded .card-toggle{transform:rotate(180deg);background:#ffffff1a;color:var(--color-text)}.zenbaki-naturalak-theory .theory-card.expanded:hover .card-toggle{background:#fff3;cursor:pointer}.zenbaki-naturalak-theory .card-content{max-height:0;overflow:hidden;opacity:0;transition:all .5s cubic-bezier(.4,0,.2,1);position:relative;z-index:1}.zenbaki-naturalak-theory .card-content.visible{max-height:5000px;opacity:1;margin-top:var(--space-6);padding-top:var(--space-6);border-top:1px solid rgba(255,255,255,.1)}.zenbaki-naturalak-theory .content-section h4{color:var(--card-color);font-size:var(--text-xl);margin-bottom:var(--space-4);margin-top:var(--space-8)}.zenbaki-naturalak-theory .content-section h4:first-child{margin-top:0}.zenbaki-naturalak-theory .content-section p{color:var(--color-text-secondary);line-height:1.7;margin-bottom:var(--space-4);font-size:1.05rem}.zenbaki-naturalak-theory .content-section strong{color:var(--color-text);font-weight:600}.zenbaki-naturalak-theory .tip-box{background:color-mix(in srgb,var(--card-color) 10%,rgba(255,255,255,.05));border-left:3px solid var(--card-color);padding:var(--space-4) var(--space-6);border-radius:0 var(--radius-lg) var(--radius-lg) 0;margin:var(--space-6) 0;color:var(--color-text-secondary);line-height:1.6}.zenbaki-naturalak-theory .tip-box strong{color:var(--card-color)}.zenbaki-naturalak-theory .warning-box{background:#ef44441a;border-left:3px solid #ef4444;padding:var(--space-4) var(--space-6);border-radius:0 var(--radius-lg) var(--radius-lg) 0;margin:var(--space-6) 0;color:#fca5a5;line-height:1.6}.zenbaki-naturalak-theory .warning-box strong{color:#ef4444}.zenbaki-naturalak-theory .example-list{margin:var(--space-4) 0;padding-left:var(--space-6);color:var(--color-text-secondary);line-height:1.8}.zenbaki-naturalak-theory .example-step{background:#0003;padding:var(--space-4);border-radius:var(--radius-lg);margin:var(--space-2) 0;font-family:monospace;color:var(--color-primary-light);border:1px solid rgba(255,255,255,.05)}.zenbaki-naturalak-theory .method-steps{list-style:none;padding:0;margin:var(--space-6) 0}.zenbaki-naturalak-theory .method-steps li{background:#ffffff08;margin-bottom:var(--space-2);padding:var(--space-4);border-radius:var(--radius-lg);display:flex;align-items:center;gap:var(--space-4);color:var(--color-text-secondary);border:1px solid rgba(255,255,255,.05)}.zenbaki-naturalak-theory .step-number{background:var(--card-color);color:#fff;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;font-weight:700;font-size:.9rem;flex-shrink:0}.zenbaki-naturalak-theory .ops-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-6);margin-top:var(--space-6)}.zenbaki-naturalak-theory .ops-card{background:#0003;border-radius:var(--radius-xl);padding:var(--space-6);border:1px solid rgba(255,255,255,.05)}.zenbaki-naturalak-theory .ops-card h5{color:var(--color-text);font-size:1.1rem;margin-bottom:var(--space-2);margin-top:0}.zenbaki-naturalak-theory .ops-card p{font-size:.95rem;margin-bottom:var(--space-4)}.zenbaki-naturalak-theory .example-text{background:#ffffff0d;padding:var(--space-4);border-radius:var(--radius-md);font-family:monospace;color:var(--color-primary-light);white-space:pre-wrap;line-height:1.5}@media(max-width:768px){.zenbaki-naturalak-theory .theory-grid{grid-template-columns:1fr}.zenbaki-naturalak-theory .theory-header h1{font-size:var(--text-4xl)}}.zn-mission-page{padding-bottom:var(--space-24)}.zn-mission-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-8);flex-wrap:wrap;gap:var(--space-4)}.zn-mission-header h1{font-size:var(--text-4xl);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0}.zn-points-display{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-6);border-radius:var(--radius-full);background:#f59e0b1a;border:1px solid rgba(245,158,11,.3);box-shadow:0 0 15px #f59e0b26}.zn-points-value{font-size:var(--text-2xl);font-weight:800;color:#fbbf24;text-shadow:0 0 8px rgba(251,191,36,.4)}.zn-points-label{font-size:var(--text-sm);color:#fcd34d;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.zn-progress-dots{display:flex;justify-content:center;gap:var(--space-2);margin-bottom:var(--space-8);flex-wrap:wrap}.zn-dot{width:12px;height:12px;border-radius:50%;background:#ffffff26;border:1px solid rgba(255,255,255,.2);cursor:pointer;transition:all var(--transition-fast);padding:0}.zn-dot.active{background:var(--color-primary);border-color:var(--color-primary);box-shadow:0 0 8px var(--color-primary);transform:scale(1.3)}.zn-dot.done{background:var(--color-success);border-color:var(--color-success);box-shadow:0 0 6px var(--color-success)}.zn-challenge-card{max-width:800px;margin:0 auto;padding:var(--space-8);border-radius:var(--radius-2xl);position:relative;overflow:hidden}.zn-challenge-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-primary);box-shadow:0 0 15px var(--color-primary)}.zn-challenge-top{display:flex;align-items:center;gap:var(--space-3);margin-bottom:var(--space-6)}.zn-challenge-num{font-size:var(--text-sm);font-weight:700;color:var(--color-text-muted);background:#ffffff0d;padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);border:1px solid rgba(255,255,255,.1)}.zn-challenge-pts{font-size:var(--text-sm);font-weight:700;color:#fbbf24}.zn-done-badge{margin-left:auto;color:var(--color-success);font-weight:900;font-size:var(--text-lg);text-shadow:0 0 8px var(--color-success)}.zn-challenge-title{font-size:var(--text-2xl);color:var(--color-text-primary);margin:0 0 var(--space-3)}.zn-challenge-desc{font-size:var(--text-lg);line-height:var(--line-height-relaxed);color:var(--color-text-secondary);margin-bottom:var(--space-8)}.zn-options-grid{display:flex;flex-direction:column;gap:var(--space-3);margin-bottom:var(--space-6)}.zn-option{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-5);background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-fast);text-align:left;width:100%}.zn-option:hover:not(:disabled){background:#6366f11a;border-color:var(--color-primary);transform:translate(4px)}.zn-option.selected{background:#6366f126;border-color:var(--color-primary);box-shadow:0 0 0 2px #6366f14d,0 4px 15px #6366f11a}.zn-option.correct{background:#10b98126;border-color:var(--color-success);box-shadow:0 0 0 2px #10b9814d,0 4px 15px #10b9811a}.zn-option.wrong{background:#ef444426;border-color:var(--color-error);box-shadow:0 0 0 2px #ef44444d;opacity:.8}.zn-option:disabled{cursor:not-allowed}.zn-option-letter{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:800;color:var(--color-text-secondary)}.zn-option.selected .zn-option-letter{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.zn-option.correct .zn-option-letter{background:var(--color-success);border-color:var(--color-success);color:#fff}.zn-option.wrong .zn-option-letter{background:var(--color-error);border-color:var(--color-error);color:#fff}.zn-option-text{font-size:var(--text-base);color:var(--color-text-primary);font-weight:500}.zn-feedback{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-4) var(--space-5);border-radius:var(--radius-xl);margin-bottom:var(--space-6);animation:fadeIn .3s ease-out}.zn-feedback.success{background:#10b98126;border:1px solid rgba(16,185,129,.3)}.zn-feedback.error{background:#ef444426;border:1px solid rgba(239,68,68,.3)}.zn-feedback-icon{font-size:var(--text-2xl);flex-shrink:0}.zn-feedback p{margin:0;color:var(--color-text-primary);font-weight:500;font-size:var(--text-base);line-height:var(--line-height-relaxed)}.zn-actions{display:flex;justify-content:space-between;align-items:center;gap:var(--space-4);margin-top:var(--space-4)}.zn-btn-nav{color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:600;padding:var(--space-2) var(--space-4);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.zn-btn-nav:hover:not(:disabled){color:var(--color-text-primary);background:#ffffff14}.zn-btn-nav:disabled{opacity:.3;cursor:not-allowed}.zn-check-btn,.zn-next-btn{min-width:160px}.zn-summary-card{max-width:500px;margin:var(--space-16) auto 0;padding:var(--space-12);text-align:center;border-radius:var(--radius-2xl)}.zn-summary-icon{font-size:4rem;margin-bottom:var(--space-4);filter:drop-shadow(0 0 20px rgba(245,158,11,.5))}.zn-summary-card h1{font-size:var(--text-3xl);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--space-8)}.zn-score-display{display:flex;align-items:baseline;justify-content:center;gap:var(--space-2);margin-bottom:var(--space-6)}.zn-score-value{font-size:4rem;font-weight:900;color:#fbbf24;text-shadow:0 0 20px rgba(251,191,36,.4);line-height:1}.zn-score-max{font-size:var(--text-xl);color:var(--color-text-muted);font-weight:600}.zn-progress-bar-large{width:100%;height:12px;background:#ffffff1a;border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--space-3)}.zn-progress-fill{height:100%;background:var(--gradient-primary);border-radius:var(--radius-full);box-shadow:0 0 10px var(--color-primary);transition:width .8s ease-out}.zn-score-pct{font-size:var(--text-2xl);font-weight:800;color:var(--color-text-primary);margin-bottom:var(--space-2)}.zn-completed-msg{color:var(--color-text-muted);font-size:var(--text-sm);margin-bottom:var(--space-8)}.zn-restart-btn{width:100%}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media(max-width:640px){.zn-mission-header{flex-direction:column;text-align:center}.zn-actions{flex-direction:column-reverse}.zn-check-btn,.zn-next-btn{width:100%}}.zatigarritasuna-home{min-height:100vh;background:var(--bg-primary);color:var(--text-primary);--color-1: #6366f1;--color-2: #ec4899;--color-3: #14b8a6;--color-4: #f59e0b;--card-bg: var(--bg-secondary);--card-border: var(--border-color)}.zatigarritasuna-home .home-header{background:linear-gradient(135deg,#6366f11a,#ec48990d,#14b8a61a);padding:var(--space-20) var(--space-4);text-align:center;border-bottom:1px solid var(--border-color);position:relative;overflow:hidden}.zatigarritasuna-home .home-header:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 30%,rgba(99,102,241,.15) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(20,184,166,.15) 0%,transparent 50%);z-index:0;pointer-events:none}.zatigarritasuna-home .hero-content{max-width:800px;margin:0 auto;position:relative;z-index:1}.zatigarritasuna-home .subject-badge{display:inline-block;padding:var(--space-1) var(--space-4);background:var(--color-1);color:#fff;border-radius:var(--radius-full);font-size:var(--text-sm);font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-6);box-shadow:0 4px 15px #6366f14d}.zatigarritasuna-home .hero-title{font-size:clamp(2.5rem,5vw,4rem);font-weight:800;line-height:1.1;margin-bottom:var(--space-4);background:linear-gradient(to right,var(--text-primary),var(--color-1));-webkit-background-clip:text;background-clip:text;color:transparent;display:flex;align-items:center;justify-content:center;gap:var(--space-4)}.zatigarritasuna-home .title-icon{font-size:.8em;animation:float 3s ease-in-out infinite}.zatigarritasuna-home .hero-subtitle{font-size:var(--text-xl);color:var(--text-secondary);margin-bottom:var(--space-6);font-weight:500}.zatigarritasuna-home .hero-description{font-size:var(--text-lg);line-height:1.6;color:var(--text-secondary);margin-bottom:var(--space-8);max-width:600px;margin-inline:auto}.zatigarritasuna-home .hero-cta{display:flex;gap:var(--space-4);justify-content:center;flex-wrap:wrap}.zatigarritasuna-home .hero-cta .btn{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);border-radius:var(--radius-xl);font-weight:600;display:flex;align-items:center;gap:var(--space-2)}.zatigarritasuna-home .btn-primary{background:var(--color-1);color:#fff;border:none;box-shadow:0 4px 15px #6366f14d}.zatigarritasuna-home .btn-primary:hover{background:var(--color-1);filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 6px 20px #6366f166}@keyframes pulse-ring{0%{transform:scale(.95);box-shadow:0 0 #6366f1b3}70%{transform:scale(1);box-shadow:0 0 0 10px #6366f100}to{transform:scale(.95);box-shadow:0 0 #6366f100}}.zatigarritasuna-home .pulse-effect{animation:pulse-ring 2s infinite}.zatigarritasuna-home .home-content{max-width:1200px;margin:0 auto;padding:var(--space-12) var(--space-4)}.zatigarritasuna-home .section-title{text-align:center;font-size:var(--text-3xl);margin-bottom:var(--space-12);color:var(--text-primary)}.zatigarritasuna-home .features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-6);margin-bottom:var(--space-16)}.zatigarritasuna-home .feature-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-2xl);padding:var(--space-8);text-align:center;transition:all .3s ease}.zatigarritasuna-home .feature-card:hover{transform:translateY(-5px);border-color:var(--color-1);box-shadow:0 10px 30px #0000001a}.zatigarritasuna-home .feature-icon{width:60px;height:60px;margin:0 auto var(--space-4);border-radius:var(--radius-xl);display:flex;align-items:center;justify-content:center;font-size:var(--text-2xl);color:#fff}.zatigarritasuna-home .feature-card h3{font-size:var(--text-xl);margin-bottom:var(--space-2);color:var(--text-primary)}.zatigarritasuna-home .feature-card p{color:var(--text-secondary);line-height:1.5}.zatigarritasuna-home .curriculum-section{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-2xl);padding:var(--space-10);position:relative;overflow:hidden}.zatigarritasuna-home .curriculum-section:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(to bottom,var(--color-1),var(--color-3))}.zatigarritasuna-home .curriculum-content h2{display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-2xl);margin-bottom:var(--space-6);color:var(--text-primary)}.zatigarritasuna-home .curriculum-list{list-style:none;padding:0;display:grid;gap:var(--space-4)}.zatigarritasuna-home .curriculum-list li{display:flex;align-items:flex-start;gap:var(--space-3);color:var(--text-secondary);font-size:var(--text-lg);line-height:1.5}.zatigarritasuna-home .curriculum-list .check{color:var(--color-3);font-weight:700;font-size:1.2em}.zatigarritasuna-home .home-footer{border-top:1px solid var(--border-color);padding:var(--space-8) var(--space-4);background:var(--bg-secondary)}.zatigarritasuna-home .footer-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;color:var(--text-secondary)}.zatigarritasuna-home .footer-links{display:flex;gap:var(--space-6)}.zatigarritasuna-home .footer-links a{color:var(--text-secondary);text-decoration:none;transition:color .2s}.zatigarritasuna-home .footer-links a:hover{color:var(--text-primary)}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@media(max-width:768px){.zatigarritasuna-home .hero-title{flex-direction:column;gap:var(--space-2)}.zatigarritasuna-home .footer-content{flex-direction:column;gap:var(--space-4);text-align:center}}.zatigarritasuna-theory{padding:var(--space-8) 0 var(--space-24);min-height:100vh}.zatigarritasuna-theory .theory-header{text-align:center;margin-bottom:var(--space-16);padding:var(--space-8) 0}.zatigarritasuna-theory .theory-header h1{font-size:var(--text-5xl);margin-bottom:var(--space-4);background:linear-gradient(135deg,#667eea,#764ba2,#f472b6 60%,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:gradientShift 8s ease infinite;background-size:200% 200%}@keyframes gradientShift{0%,100% {background-position: 0% 50%; .zatigarritasuna-theory 50% {background-position: 100% 50%;} .zatigarritasuna-theory .theory-subtitle {font-size: var(--text-xl); color: var(--color-text-secondary); margin-bottom: var(--space-4);} .zatigarritasuna-theory .theory-description {color: var(--color-text-muted); max-width: 600px; margin: 0 auto;} .zatigarritasuna-theory .theory-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(360px,1fr)); gap: var(--space-6); max-width: 1200px; margin: 0 auto;} .zatigarritasuna-theory .theory-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.03) 100%); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,.1); border-left: 4px solid var(--card-color); border-radius: var(--radius-2xl); padding: var(--space-6); cursor: pointer; transition: all .4s cubic-bezier(.4,0,.2,1); position: relative; overflow: hidden;} .zatigarritasuna-theory .theory-card::before {content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg,color-mix(in srgb,var(--card-color) 15%,transparent) 0%,transparent 50%); opacity: 0; transition: opacity .4s ease; pointer-events: none;} .zatigarritasuna-theory .theory-card::after {content: ""; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle,color-mix(in srgb,var(--card-color) 10%,transparent) 0%,transparent 60%); opacity: 0; transition: opacity .4s ease; pointer-events: none;} .zatigarritasuna-theory .theory-card:hover {transform: translateY(-6px) scale(1.01); box-shadow: 0 20px 40px -15px color-mix(in srgb,var(--card-color) 30%,transparent),0 0 60px -20px var(--card-color); border-color: color-mix(in srgb,var(--card-color) 60%,white);} .zatigarritasuna-theory .theory-card:hover::before,.zatigarritasuna-theory .theory-card:hover::after {opacity: 1;} .zatigarritasuna-theory .theory-card.expanded {grid-column: 1 / -1; background: linear-gradient(145deg,rgba(255,255,255,.12) 0%,rgba(255,255,255,.05) 100%); border-left-width: 6px;} .zatigarritasuna-theory .theory-card.expanded::before {opacity: 1;} .zatigarritasuna-theory .card-header {display: flex; align-items: center; gap: var(--space-4); position: relative; z-index: 1;} .zatigarritasuna-theory .card-icon {font-size: 2rem; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,color-mix(in srgb,var(--card-color) 25%,transparent) 0%,color-mix(in srgb,var(--card-color) 10%,transparent) 100%); border-radius: var(--radius-xl); border: 2px solid color-mix(in srgb,var(--card-color) 40%,transparent); transition: all .3s ease;} .zatigarritasuna-theory .theory-card:hover .card-icon {transform: scale(1.1) rotate(5deg); border-color: var(--card-color); box-shadow: 0 0 20px color-mix(in srgb,var(--card-color) 40%,transparent);} .zatigarritasuna-theory .card-title {flex: 1; font-size: var(--text-xl); font-weight: 600; color: var(--color-text-primary); margin: 0;} .zatigarritasuna-theory .card-toggle {font-size: var(--text-2xl); font-weight: 300; color: var(--card-color); width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: color-mix(in srgb,var(--card-color) 10%,transparent); border: 2px solid color-mix(in srgb,var(--card-color) 30%,transparent); border-radius: var(--radius-lg); transition: all .3s ease;} .zatigarritasuna-theory .theory-card:hover .card-toggle {background: var(--card-color); color: white; transform: scale(1.1);} .zatigarritasuna-theory .card-content {max-height: 0; overflow: hidden; opacity: 0; transition: all .5s cubic-bezier(.4,0,.2,1); position: relative; z-index: 1;} .zatigarritasuna-theory .card-content.visible {max-height: 3000px; opacity: 1; margin-top: var(--space-6); padding-top: var(--space-6); border-top: 2px solid color-mix(in srgb,var(--card-color) 30%,transparent);} .zatigarritasuna-theory .content-section {color: var(--color-text-secondary); animation: fadeSlideIn .5s ease forwards;} @keyframes fadeSlideIn {from {opacity: 0; transform: translateY(10px); .zatigarritasuna-theory to {opacity: 1; transform: translateY(0);} .zatigarritasuna-theory .content-section h4 {color: var(--color-text-primary); font-size: var(--text-xl); font-weight: 700; margin: var(--space-8) 0 var(--space-4); display: flex; align-items: center; gap: var(--space-3);} .zatigarritasuna-theory .content-section h4::before {content: ""; width: 4px; height: 24px; background: var(--card-color, linear-gradient(180deg, #667eea, #764ba2)); border-radius: 2px;} .zatigarritasuna-theory .content-section h4:first-child {margin-top: 0;} .zatigarritasuna-theory .content-section h5 {color: var(--color-text-primary); font-size: var(--text-lg); font-weight: 600; margin: var(--space-4) 0 var(--space-2);} .zatigarritasuna-theory .content-section p {margin-bottom: var(--space-3); line-height: var(--line-height-relaxed); font-size: var(--text-base);} .zatigarritasuna-theory .fraction-visual {display: flex; flex-direction: column; align-items: center; gap: var(--space-6); padding: var(--space-8); background: linear-gradient(135deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 50%,rgba(244,114,182,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); margin: var(--space-6) 0; position: relative; overflow: hidden;} .zatigarritasuna-theory .fraction-visual::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg,#667eea,#764ba2,#f472b6);} .zatigarritasuna-theory .big-fraction {display: flex; flex-direction: column; align-items: center; font-size: 4rem; font-weight: 800; color: var(--color-text-primary);} .zatigarritasuna-theory .big-fraction .numerator,.zatigarritasuna-theory .big-fraction .denominator {padding: var(--space-2) var(--space-8); transition: all .3s ease;} .zatigarritasuna-theory .big-fraction .numerator {color: #667eea;} .zatigarritasuna-theory .big-fraction .denominator {color: #f472b6;} .zatigarritasuna-theory .big-fraction .fraction-line {width: 100px; height: 6px; background: linear-gradient(90deg,#667eea,#f472b6); border-radius: var(--radius-full); box-shadow: 0 0 20px rgba(102,126,234,.5);} .zatigarritasuna-theory .fraction-labels {display: flex; flex-direction: column; gap: var(--space-3); text-align: left;} .zatigarritasuna-theory .label {font-size: var(--text-base); padding: var(--space-2) var(--space-4); border-radius: var(--radius-lg); font-weight: 500;} .zatigarritasuna-theory .label.num-label {background: rgba(102,126,234,.15); color: #818cf8; border-left: 3px solid #667eea;} .zatigarritasuna-theory .label.den-label {background: rgba(244,114,182,.15); color: #f472b6; border-left: 3px solid #f472b6;} .zatigarritasuna-theory .meanings-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); gap: var(--space-4); margin: var(--space-6) 0;} .zatigarritasuna-theory .meaning-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius-xl); padding: var(--space-5); transition: all .3s ease; position: relative; overflow: hidden;} .zatigarritasuna-theory .meaning-card::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg,#667eea,#06b6d4); transform: scaleX(0); transition: transform .3s ease;} .zatigarritasuna-theory .meaning-card:hover {border-color: rgba(102,126,234,.4); transform: translateY(-4px); box-shadow: 0 10px 30px -10px rgba(102,126,234,.3);} .zatigarritasuna-theory .meaning-card:hover::before {transform: scaleX(1);} .zatigarritasuna-theory .meaning-card h5 {margin-top: 0; font-size: var(--text-lg); color: var(--color-text-primary); display: flex; align-items: center; gap: var(--space-2);} .zatigarritasuna-theory .meaning-card .example {font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-3); padding: var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg); border-left: 3px solid #06b6d4;} .zatigarritasuna-theory .tip-box {background: linear-gradient(135deg,rgba(16,185,129,.15) 0%,rgba(6,182,212,.15) 100%); border: 2px solid rgba(16,185,129,.3); border-left: 5px solid #10b981; border-radius: var(--radius-xl); padding: var(--space-5); margin: var(--space-8) 0; font-size: var(--text-base); position: relative; overflow: hidden;} .zatigarritasuna-theory .tip-box::before {content: "💡"; position: absolute; top: -10px; right: -10px; font-size: 4rem; opacity: .15;} .zatigarritasuna-theory .warning-box {background: linear-gradient(135deg,rgba(245,158,11,.15) 0%,rgba(239,68,68,.15) 100%); border: 2px solid rgba(245,158,11,.3); border-left: 5px solid #f59e0b; border-radius: var(--radius-xl); padding: var(--space-5); margin: var(--space-8) 0; font-size: var(--text-base); position: relative; overflow: hidden;} .zatigarritasuna-theory .warning-box::before {content: "⚠️"; position: absolute; top: -10px; right: -10px; font-size: 4rem; opacity: .15;} .zatigarritasuna-theory .type-cards {display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zatigarritasuna-theory .type-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); text-align: center; transition: all .3s ease; position: relative; overflow: hidden;} .zatigarritasuna-theory .type-card::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;} .zatigarritasuna-theory .type-card.proper::before {background: linear-gradient(90deg,#10b981,#34d399);} .zatigarritasuna-theory .type-card.improper::before {background: linear-gradient(90deg,#f59e0b,#fbbf24);} .zatigarritasuna-theory .type-card.unit::before {background: linear-gradient(90deg,#6366f1,#818cf8);} .zatigarritasuna-theory .type-card:hover {transform: translateY(-6px) scale(1.02);} .zatigarritasuna-theory .type-card.proper:hover {border-color: #10b981; box-shadow: 0 15px 40px -15px rgba(16,185,129,.4);} .zatigarritasuna-theory .type-card.improper:hover {border-color: #f59e0b; box-shadow: 0 15px 40px -15px rgba(245,158,11,.4);} .zatigarritasuna-theory .type-card.unit:hover {border-color: #6366f1; box-shadow: 0 15px 40px -15px rgba(99,102,241,.4);} .zatigarritasuna-theory .type-card h5 {margin-top: var(--space-2); font-size: var(--text-lg); font-weight: 700;} .zatigarritasuna-theory .type-card .fraction-example {font-size: var(--text-3xl); margin: var(--space-4) 0; padding: var(--space-4); background: rgba(0,0,0,.2); border-radius: var(--radius-xl);} .zatigarritasuna-theory .type-card .value {color: var(--color-primary-light); font-weight: 700; font-size: var(--text-base);} .zatigarritasuna-theory .type-card .example {font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-2); font-weight: 500;} .zatigarritasuna-theory .fraction-display {display: inline-flex; flex-direction: column; align-items: center; vertical-align: middle; font-family: var(--font-mono); font-weight: 700; padding: 0 var(--space-1);} .zatigarritasuna-theory .fraction-display .num {padding: 0 var(--space-2); color: #818cf8;} .zatigarritasuna-theory .fraction-display .line {width: 100%; height: 2px; background: linear-gradient(90deg,#667eea,#f472b6); border-radius: 1px;} .zatigarritasuna-theory .fraction-display .den {padding: 0 var(--space-2); color: #f472b6;} .zatigarritasuna-theory .conversion-example {background: linear-gradient(145deg,rgba(102,126,234,.1) 0%,rgba(244,114,182,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-6) 0;} .zatigarritasuna-theory .conversion-step {display: flex; align-items: center; justify-content: center; gap: var(--space-5); flex-wrap: wrap; font-size: var(--text-xl);} .zatigarritasuna-theory .arrow {color: #06b6d4; font-size: var(--text-2xl); font-weight: 700;} .zatigarritasuna-theory .result {padding: var(--space-2) var(--space-4); background: rgba(6,182,212,.15); border-radius: var(--radius-lg); color: #22d3ee;} .zatigarritasuna-theory .mixed-number {display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-3) var(--space-4); background: linear-gradient(135deg,rgba(16,185,129,.2),rgba(6,182,212,.2)); border-radius: var(--radius-xl); border: 2px solid rgba(16,185,129,.3);} .zatigarritasuna-theory .mixed-number .whole {font-size: var(--text-3xl); font-weight: 800; color: #10b981;} .zatigarritasuna-theory .mixed-number .fraction-part {display: flex; flex-direction: column; font-size: var(--text-base);} .zatigarritasuna-theory .equivalence-demo {background: linear-gradient(145deg,rgba(244,114,182,.1) 0%,rgba(6,182,212,.1) 100%); border: 2px solid rgba(244,114,182,.2); border-radius: var(--radius-2xl); padding: var(--space-8); margin: var(--space-6) 0;} .zatigarritasuna-theory .fractions-row {display: flex; align-items: center; justify-content: center; gap: var(--space-6); flex-wrap: wrap;} .zatigarritasuna-theory .frac-visual {display: flex; flex-direction: column; align-items: center; gap: var(--space-3); padding: var(--space-4); background: rgba(0,0,0,.2); border-radius: var(--radius-xl); transition: all .3s ease;} .zatigarritasuna-theory .frac-visual:hover {transform: scale(1.05);} .zatigarritasuna-theory .frac-visual .fraction-display {font-size: var(--text-2xl);} .zatigarritasuna-theory .visual-bar {width: 100px; height: 16px; background: rgba(255,255,255,.1); border-radius: var(--radius-full); overflow: hidden; border: 2px solid rgba(255,255,255,.2);} .zatigarritasuna-theory .visual-bar .filled {height: 100%; background: linear-gradient(90deg,#667eea,#f472b6); border-radius: var(--radius-full); transition: width .5s ease;} .zatigarritasuna-theory .equals {font-size: var(--text-3xl); color: #10b981; font-weight: 800; text-shadow: 0 0 20px rgba(16,185,129,.5);} .zatigarritasuna-theory .formula-box {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.15); border-radius: var(--radius-2xl); padding: var(--space-5); margin: var(--space-5) 0; display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); font-family: var(--font-mono); transition: all .3s ease;} .zatigarritasuna-theory .formula-box:hover {border-color: rgba(102,126,234,.4); box-shadow: 0 10px 30px -10px rgba(102,126,234,.3);} .zatigarritasuna-theory .formula-box.highlight {background: linear-gradient(135deg,rgba(102,126,234,.15) 0%,rgba(6,182,212,.15) 100%); border-color: rgba(102,126,234,.4); box-shadow: 0 0 30px -10px rgba(102,126,234,.4);} .zatigarritasuna-theory .example-steps {display: flex; flex-direction: column; gap: var(--space-4); margin: var(--space-6) 0;} .zatigarritasuna-theory .step {display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-3); background: rgba(255,255,255,.03); border-radius: var(--radius-xl); transition: all .3s ease;} .zatigarritasuna-theory .step:hover {background: rgba(255,255,255,.06);} .zatigarritasuna-theory .step-num {width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,#667eea,#764ba2); color: white; border-radius: var(--radius-full); font-size: var(--text-base); font-weight: 800; flex-shrink: 0; box-shadow: 0 4px 15px rgba(102,126,234,.4);} .zatigarritasuna-theory .method-box {background: linear-gradient(145deg,rgba(6,182,212,.1) 0%,rgba(102,126,234,.1) 100%); border: 2px solid rgba(6,182,212,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-6) 0;} .zatigarritasuna-theory .method-box ol {margin: var(--space-3) 0; padding-left: var(--space-8);} .zatigarritasuna-theory .method-box li {margin: var(--space-3) 0; padding-left: var(--space-2);} .zatigarritasuna-theory .method-box li::marker {color: #06b6d4; font-weight: 700;} .zatigarritasuna-theory .comparison-example {background: linear-gradient(145deg,rgba(139,92,246,.1) 0%,rgba(6,182,212,.1) 100%); border: 2px solid rgba(139,92,246,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-5) 0; display: flex; align-items: center; justify-content: center; gap: var(--space-5); flex-wrap: wrap; font-size: var(--text-xl);} .zatigarritasuna-theory .comparison-op {font-size: var(--text-3xl); font-weight: 800; padding: var(--space-3) var(--space-4); border-radius: var(--radius-xl);} .zatigarritasuna-theory .comparison-op.greater {color: #10b981; background: rgba(16,185,129,.15);} .zatigarritasuna-theory .comparison-op.less {color: #ef4444; background: rgba(239,68,68,.15);} .zatigarritasuna-theory .explanation {color: var(--color-text-muted); font-size: var(--text-sm); padding: var(--space-2) var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg);} .zatigarritasuna-theory .example-box {background: linear-gradient(145deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); margin: var(--space-5) 0; transition: all .3s ease;} .zatigarritasuna-theory .example-box:hover {border-color: rgba(102,126,234,.3);} .zatigarritasuna-theory .example-box .example {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); padding: var(--space-4); background: rgba(0,0,0,.15); border-radius: var(--radius-xl); margin-top: var(--space-3);} .zatigarritasuna-theory .cross-simplify {display: flex; flex-direction: column; align-items: center; gap: var(--space-3); padding: var(--space-4); background: rgba(0,0,0,.15); border-radius: var(--radius-xl);} .zatigarritasuna-theory .cross-simplify .fractions {display: flex; align-items: center; gap: var(--space-4);} .zatigarritasuna-theory .cross-simplify .crossed {text-decoration: line-through; color: var(--color-text-muted); opacity: .5;} .zatigarritasuna-theory .paren {font-size: var(--text-2xl); color: #f472b6;} .zatigarritasuna-theory .power {font-size: var(--text-sm); vertical-align: super; margin-left: 2px; color: #06b6d4; font-weight: 700;} .zatigarritasuna-theory .rules-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zatigarritasuna-theory .rule-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); text-align: center; transition: all .3s ease;} .zatigarritasuna-theory .rule-card:hover {border-color: rgba(102,126,234,.4); transform: translateY(-4px); box-shadow: 0 10px 30px -10px rgba(102,126,234,.3);} .zatigarritasuna-theory .rule-card h5 {margin-top: 0; color: #818cf8; font-size: var(--text-base);} .zatigarritasuna-theory .rule-card .formula {font-family: var(--font-mono); font-size: var(--text-lg); padding: var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg); margin-top: var(--space-3);} .zatigarritasuna-theory .solved-example {background: linear-gradient(145deg,rgba(102,126,234,.1) 0%,rgba(139,92,246,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); padding: var(--space-8); margin: var(--space-6) 0;} .zatigarritasuna-theory .solved-example .expression {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); padding: var(--space-5); background: rgba(0,0,0,.2); border-radius: var(--radius-xl); margin-bottom: var(--space-6); border: 2px solid rgba(102,126,234,.3);} .zatigarritasuna-theory .solved-example .steps {display: flex; flex-direction: column; gap: var(--space-4);} .zatigarritasuna-theory .solved-example .step {background: rgba(255,255,255,.05); border-radius: var(--radius-xl); padding: var(--space-4) var(--space-5); border-left: 4px solid;} .zatigarritasuna-theory .solved-example .step:nth-child(1) {border-color: #667eea;} .zatigarritasuna-theory .solved-example .step:nth-child(2) {border-color: #f59e0b;} .zatigarritasuna-theory .solved-example .step:nth-child(3) {border-color: #10b981;} .zatigarritasuna-theory .decimal-types {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zatigarritasuna-theory .type-item {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); transition: all .3s ease;} .zatigarritasuna-theory .type-item:hover {border-color: rgba(6,182,212,.4); transform: translateY(-4px);} .zatigarritasuna-theory .type-item h5 {margin-top: 0; color: #22d3ee; font-size: var(--text-lg);} .zatigarritasuna-theory .type-item .example {font-family: var(--font-mono); color: var(--color-text-primary); font-size: var(--text-xl); margin: var(--space-3) 0; padding: var(--space-3); background: rgba(6,182,212,.1); border-radius: var(--radius-lg); text-align: center;} .zatigarritasuna-theory .type-item .condition {font-size: var(--text-sm); color: var(--color-text-muted); padding: var(--space-2) var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg);} .zatigarritasuna-theory .conversion-steps {display: flex; flex-direction: column; gap: var(--space-5); margin: var(--space-6) 0;} .zatigarritasuna-theory .step-card {background: linear-gradient(145deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-left: 5px solid; border-radius: var(--radius-2xl); padding: var(--space-5); transition: all .3s ease;} .zatigarritasuna-theory .step-card:nth-child(1) {border-left-color: #10b981;} .zatigarritasuna-theory .step-card:nth-child(2) {border-left-color: #f59e0b;} .zatigarritasuna-theory .step-card:nth-child(3) {border-left-color: #6366f1;} .zatigarritasuna-theory .step-card:hover {transform: translateX(8px);} .zatigarritasuna-theory .step-card h5 {margin-top: 0; font-size: var(--text-lg);} .zatigarritasuna-theory .step-card:nth-child(1) h5 {color: #34d399;} .zatigarritasuna-theory .step-card:nth-child(2) h5 {color: #fbbf24;} .zatigarritasuna-theory .step-card:nth-child(3) h5 {color: #818cf8;} .zatigarritasuna-theory .step-card ol {margin: var(--space-3) 0; padding-left: var(--space-6);} .zatigarritasuna-theory .step-card li {margin: var(--space-2) 0;} .zatigarritasuna-theory .magnitude-types {display: grid; grid-template-columns: repeat(auto-fit,minmax(320px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zatigarritasuna-theory .magnitude-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-6); transition: all .3s ease;} .zatigarritasuna-theory .magnitude-card.direct {border-top: 4px solid #10b981;} .zatigarritasuna-theory .magnitude-card.inverse {border-top: 4px solid #f59e0b;} .zatigarritasuna-theory .magnitude-card.direct:hover {border-color: #10b981; box-shadow: 0 15px 40px -15px rgba(16,185,129,.3);} .zatigarritasuna-theory .magnitude-card.inverse:hover {border-color: #f59e0b; box-shadow: 0 15px 40px -15px rgba(245,158,11,.3);} .zatigarritasuna-theory .magnitude-card h5 {margin-top: 0; font-size: var(--text-xl);} .zatigarritasuna-theory .magnitude-card.direct h5 {color: #34d399;} .zatigarritasuna-theory .magnitude-card.inverse h5 {color: #fbbf24;} .zatigarritasuna-theory .magnitude-card .formula {background: rgba(0,0,0,.2); border-radius: var(--radius-xl); padding: var(--space-3) var(--space-4); margin: var(--space-4) 0; font-family: var(--font-mono); text-align: center; font-size: var(--text-lg);} .zatigarritasuna-theory .magnitude-card .examples {font-size: var(--text-sm); color: var(--color-text-muted); display: flex; flex-direction: column; gap: var(--space-2);} .zatigarritasuna-theory .magnitude-card .examples p {margin: 0; padding: var(--space-2); background: rgba(255,255,255,.03); border-radius: var(--radius-lg);} .zatigarritasuna-theory .rule-three-example {background: linear-gradient(145deg,rgba(244,114,182,.1) 0%,rgba(102,126,234,.1) 100%); border: 2px solid rgba(244,114,182,.2); border-radius: var(--radius-2xl); padding: var(--space-8); margin: var(--space-6) 0;} .zatigarritasuna-theory .rule-three-example .setup {display: flex; flex-direction: column; gap: var(--space-3); margin: var(--space-5) 0; padding: var(--space-5); background: rgba(0,0,0,.2); border-radius: var(--radius-xl);} .zatigarritasuna-theory .rule-three-example .proportion {display: flex; align-items: center; justify-content: center; gap: var(--space-5); font-family: var(--font-mono); font-size: var(--text-xl); padding: var(--space-2);} .zatigarritasuna-theory .rule-three-example .solution {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; margin-top: var(--space-5); padding: var(--space-5); background: linear-gradient(135deg,rgba(16,185,129,.15),rgba(6,182,212,.15)); border-radius: var(--radius-xl); border: 2px solid rgba(16,185,129,.3); font-size: var(--text-xl);} .zatigarritasuna-theory .proportion-box {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-6); background: linear-gradient(135deg,rgba(102,126,234,.1),rgba(244,114,182,.1)); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); margin: var(--space-5) 0; font-size: var(--text-2xl); font-family: var(--font-mono);} .zatigarritasuna-theory .percent-fraction {display: flex; align-items: center; justify-content: center; gap: var(--space-5); font-size: var(--text-2xl); margin: var(--space-6) 0; padding: var(--space-6); background: linear-gradient(135deg,rgba(139,92,246,.1),rgba(244,114,182,.1)); border: 2px solid rgba(139,92,246,.2); border-radius: var(--radius-2xl);} .zatigarritasuna-theory .percent {font-size: var(--text-4xl); font-weight: 800; background: linear-gradient(135deg,#8b5cf6,#f472b6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;} .zatigarritasuna-theory .calculation-examples {display: flex; flex-direction: column; gap: var(--space-5); margin: var(--space-6) 0;} .zatigarritasuna-theory .calculation-examples .example-box {margin: 0;} .zatigarritasuna-theory .calculation-examples .calculation {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; margin-top: var(--space-3); font-size: var(--text-xl); font-family: var(--font-mono);} .zatigarritasuna-theory .increase-decrease {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zatigarritasuna-theory .operation-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); transition: all .3s ease;} .zatigarritasuna-theory .operation-card.increase {border-top: 4px solid #10b981;} .zatigarritasuna-theory .operation-card.decrease {border-top: 4px solid #ef4444;} .zatigarritasuna-theory .operation-card.increase:hover {border-color: #10b981; box-shadow: 0 15px 40px -15px rgba(16,185,129,.3);} .zatigarritasuna-theory .operation-card.decrease:hover {border-color: #ef4444; box-shadow: 0 15px 40px -15px rgba(239,68,68,.3);} .zatigarritasuna-theory .operation-card h5 {margin-top: 0; font-size: var(--text-xl);} .zatigarritasuna-theory .operation-card.increase h5 {color: #34d399;} .zatigarritasuna-theory .operation-card.decrease h5 {color: #f87171;} .zatigarritasuna-theory .operation-card .example {background: rgba(0,0,0,.2); border-radius: var(--radius-xl); padding: var(--space-4); margin-top: var(--space-3); font-family: var(--font-mono); font-size: var(--text-base);} .zatigarritasuna-theory .equivalents-table {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); overflow: hidden; margin: var(--space-6) 0;} .zatigarritasuna-theory .table-row {display: grid; grid-template-columns: 1fr 1fr 1fr; padding: var(--space-4) var(--space-5); text-align: center; border-bottom: 1px solid rgba(255,255,255,.1); transition: all .3s ease;} .zatigarritasuna-theory .table-row:last-child {border-bottom: none;} .zatigarritasuna-theory .table-row:not(.header):hover {background: rgba(102,126,234,.1);} .zatigarritasuna-theory .table-row.header {background: linear-gradient(90deg,rgba(102,126,234,.2),rgba(139,92,246,.2)); font-weight: 700; color: var(--color-text-primary); font-size: var(--text-base);} .zatigarritasuna-theory [dir="rtl"] .theory-card {border-left: none; border-right: 4px solid var(--card-color);} .zatigarritasuna-theory [dir="rtl"] .content-section h4::before {margin-left: var(--space-3); margin-right: 0;} .zatigarritasuna-theory [dir="rtl"] .tip-box,.zatigarritasuna-theory [dir="rtl"] .warning-box {border-left: none; border-right: 5px solid;} .zatigarritasuna-theory [dir="rtl"] .tip-box {border-right-color: #10b981;} .zatigarritasuna-theory [dir="rtl"] .warning-box {border-right-color: #f59e0b;} .zatigarritasuna-theory [dir="rtl"] .step-card {border-left: none; border-right: 5px solid;} .zatigarritasuna-theory [dir="rtl"] .step-card:nth-child(1) {border-right-color: #10b981;} .zatigarritasuna-theory [dir="rtl"] .step-card:nth-child(2) {border-right-color: #f59e0b;} .zatigarritasuna-theory [dir="rtl"] .step-card:nth-child(3) {border-right-color: #6366f1;} .zatigarritasuna-theory [dir="rtl"] .label {border-left: none; border-right: 3px solid;} .zatigarritasuna-theory [dir="rtl"] .label.num-label {border-right-color: #667eea;} .zatigarritasuna-theory [dir="rtl"] .label.den-label {border-right-color: #f472b6;} .zatigarritasuna-theory [dir="rtl"] .meaning-card .example {border-left: none; border-right: 3px solid #06b6d4;} .zatigarritasuna-theory [dir="rtl"] .solved-example .step {border-left: none; border-right: 4px solid;} .zatigarritasuna-theory .priority-list {display: flex; flex-direction: column; gap: var(--space-3); margin: var(--space-6) 0;} .zatigarritasuna-theory .priority-item {display: flex; align-items: center; gap: var(--space-4); padding: var(--space-4); background: linear-gradient(145deg,rgba(255,255,255,.05) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.08); border-radius: var(--radius-xl); transition: all .3s ease;} .zatigarritasuna-theory .priority-item:hover {border-color: rgba(102,126,234,.3); background: rgba(255,255,255,.08);} .zatigarritasuna-theory .priority-item:nth-child(1) {border-left: 4px solid #ef4444;} .zatigarritasuna-theory .priority-item:nth-child(2) {border-left: 4px solid #f59e0b;} .zatigarritasuna-theory .priority-item:nth-child(3) {border-left: 4px solid #10b981;} .zatigarritasuna-theory .priority-item:nth-child(4) {border-left: 4px solid #06b6d4;} .zatigarritasuna-theory .priority-num {width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; font-size: var(--text-lg); font-weight: 800; border-radius: var(--radius-full); flex-shrink: 0;} .zatigarritasuna-theory .priority-item:nth-child(1) .priority-num {background: linear-gradient(135deg,#ef4444,#f97316); color: white;} .zatigarritasuna-theory .priority-item:nth-child(2) .priority-num {background: linear-gradient(135deg,#f59e0b,#fbbf24); color: white;} .zatigarritasuna-theory .priority-item:nth-child(3) .priority-num {background: linear-gradient(135deg,#10b981,#34d399); color: white;} .zatigarritasuna-theory .priority-item:nth-child(4) .priority-num {background: linear-gradient(135deg,#06b6d4,#22d3ee); color: white;} .zatigarritasuna-theory .priority-text {font-size: var(--text-base); color: var(--color-text-secondary);} .zatigarritasuna-theory .example-box {background: linear-gradient(145deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); margin: var(--space-5) 0; transition: all .3s ease;} .zatigarritasuna-theory .example-box:hover {border-color: rgba(102,126,234,.3); box-shadow: 0 5px 20px -10px rgba(102,126,234,.3);} .zatigarritasuna-theory .example-box .example {display: flex; align-items: center; justify-content: center; gap: var(--space-3); flex-wrap: wrap; font-size: var(--text-lg);} .zatigarritasuna-theory .example-box p {margin-bottom: var(--space-3); font-weight: 600; color: var(--color-text-primary);} .zatigarritasuna-theory .solved-example {background: linear-gradient(145deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 50%,rgba(6,182,212,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-6) 0; position: relative; overflow: hidden;} .zatigarritasuna-theory .solved-example::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,#667eea,#764ba2,#06b6d4);} .zatigarritasuna-theory .solved-example p {margin-bottom: var(--space-4); font-size: var(--text-lg); color: var(--color-text-primary);} .zatigarritasuna-theory .solved-example .expression {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); padding: var(--space-4); background: rgba(0,0,0,.2); border-radius: var(--radius-xl); margin-bottom: var(--space-5);} .zatigarritasuna-theory .solved-example .steps {display: flex; flex-direction: column; gap: var(--space-3);} .zatigarritasuna-theory .solved-example .step {display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-4); background: rgba(255,255,255,.04); border-radius: var(--radius-xl); border-left: 4px solid rgba(102,126,234,.4); transition: all .3s ease;} .zatigarritasuna-theory .solved-example .step:hover {background: rgba(255,255,255,.08); border-left-color: #667eea;} .zatigarritasuna-theory .operation {font-size: var(--text-xl); font-weight: 700; color: #f472b6; padding: 0 var(--space-2);} .zatigarritasuna-theory .fraction-display.highlight {background: linear-gradient(135deg,rgba(16,185,129,.2) 0%,rgba(6,182,212,.2) 100%); border: 2px solid rgba(16,185,129,.4); border-radius: var(--radius-lg); padding: var(--space-2);} .zatigarritasuna-theory .fraction-display.highlight .num,.zatigarritasuna-theory .fraction-display.highlight .den {color: #10b981;} .zatigarritasuna-theory .paren {font-size: var(--text-2xl); font-weight: 300; color: var(--color-text-secondary);} .zatigarritasuna-theory .power {font-size: var(--text-lg); position: relative; top: -.8em; color: #f59e0b; font-weight: 700;} .zatigarritasuna-theory .tip-box.warning {background: linear-gradient(135deg,rgba(245,158,11,.15) 0%,rgba(239,68,68,.15) 100%); border: 2px solid rgba(245,158,11,.3); border-left: 5px solid #f59e0b;} .zatigarritasuna-theory .tip-box.warning::before {content: "⚠️";} @media (max-width: 768px) {.theory-header h1 {font-size: var(--text-4xl); .zatigarritasuna-theory .theory-grid {grid-template-columns: 1fr;} .zatigarritasuna-theory .theory-card.expanded {grid-column: 1;} .zatigarritasuna-theory .meanings-grid,.zatigarritasuna-theory .type-cards {grid-template-columns: 1fr;} .zatigarritasuna-theory .formula-box {font-size: var(--text-base); padding: var(--space-4);} .zatigarritasuna-theory .conversion-step {flex-direction: column; gap: var(--space-3);} .zatigarritasuna-theory .fractions-row {flex-direction: column;} .zatigarritasuna-theory .big-fraction {font-size: 3rem;} .zatigarritasuna-theory .fraction-visual {padding: var(--space-5);} .zatigarritasuna-theory .magnitude-types,.zatigarritasuna-theory .increase-decrease,.zatigarritasuna-theory .decimal-types {grid-template-columns: 1fr;} .zatigarritasuna-theory .comparison-example,.zatigarritasuna-theory .percent-fraction {flex-direction: column; gap: var(--space-3);}.divisor-checker-lab {display: flex; flex-direction: column; gap: var(--space-6);} .lab-controls {display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--space-4); padding: var(--space-6);} .input-group {display: flex; flex-direction: column; gap: var(--space-2);} .input-group label {font-size: var(--text-sm); font-weight: 600; color: var(--color-text-secondary);} .result-container {display: flex; align-items: center; gap: var(--space-6); padding: var(--space-6); border-radius: var(--radius-lg);} .result-container.success {background: linear-gradient(135deg,rgba(16,185,129,.1) 0%,rgba(52,211,153,.1) 100%); border: 1px solid rgba(16,185,129,.3);} .result-container.error {background: linear-gradient(135deg,rgba(239,68,68,.1) 0%,rgba(248,113,113,.1) 100%); border: 1px solid rgba(239,68,68,.3);} .result-icon {font-size: 3rem; display: flex; align-items: center; justify-content: center;} .result-text {flex: 1;} .result-text h3 {margin: 0; font-size: var(--text-xl); font-weight: 700; color: var(--color-text-primary);} .explanation {margin-top: var(--space-2); font-size: var(--text-base); color: var(--color-text-secondary);}.lcm-gcd-lab {display: flex; flex-direction: column; gap: var(--space-6);} .lab-controls {display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--space-4); padding: var(--space-6);} .input-group {display: flex; flex-direction: column; gap: var(--space-2);} .input-group label {font-size: var(--text-sm); font-weight: 600; color: var(--color-text-secondary);} .results-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: var(--space-6);} .result-card {padding: var(--space-6); text-align: center; display: flex; flex-direction: column; align-items: center; gap: var(--space-4); border-radius: var(--radius-lg); border: 1px solid var(--color-border);} .result-card h3 {margin: 0; font-size: var(--text-lg); color: var(--color-text-secondary);} .result-value {font-size: 4rem; font-weight: 800; line-height: 1; margin: var(--space-4) 0;} .mkt-val {background: linear-gradient(135deg,#3B82F6 0%,#2563EB 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;} .zkh-val {background: linear-gradient(135deg,#10B981 0%,#059669 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;}.divisibility-rules-lab {display: flex; flex-direction: column; gap: var(--space-6);} .lab-controls {display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--space-4); padding: var(--space-6);} .input-group {display: flex; flex-direction: column; gap: var(--space-2);} .input-group label {font-size: var(--text-sm); font-weight: 600; color: var(--color-text-secondary);} .rules-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); gap: var(--space-4);} .rule-card {display: flex; flex-direction: column; padding: var(--space-4); border-radius: var(--radius-md); border-left: 4px solid var(--color-border); transition: transform .2s ease,box-shadow .2s ease;} .rule-card:hover {transform: translateY(-2px); box-shadow: var(--shadow-md);} .rule-card.passes {border-left-color: #10B981; background: linear-gradient(90deg,rgba(16,185,129,.05) 0%,transparent 100%);} .rule-card.fails {border-left-color: #EF4444; background: linear-gradient(90deg,rgba(239,68,68,.05) 0%,transparent 100%);} .rule-header {display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-2);} .rule-badge {background-color: var(--color-surface); color: var(--color-text-primary); font-weight: 700; padding: var(--space-1) var(--space-3); border-radius: var(--radius-pill); font-size: var(--text-lg); box-shadow: var(--shadow-sm);} .passes .rule-status {color: #10B981; font-weight: 700;} .fails .rule-status {color: #EF4444; font-weight: 600;} .rule-text {margin: 0; font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.5;}.lab-page {padding: var(--space-8) 0; min-height: 100vh; background: var(--color-bg);} .lab-header {text-align: center; margin-bottom: var(--space-8);} .lab-header h1 {margin-bottom: var(--space-4); font-size: var(--text-4xl); background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; filter: drop-shadow(0 0 2em var(--color-primary-glow));} .lab-instructions {color: var(--color-text-secondary); max-width: 600px; margin: 0 auto; font-size: var(--text-lg); font-weight: 500;} .lab-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(140px,1fr)); gap: var(--space-3); margin-bottom: var(--space-8); max-width: 900px; margin-left: auto; margin-right: auto;} .lab-card {display: flex; flex-direction: column; align-items: center; gap: var(--space-2); padding: var(--space-4); background: var(--glass-bg); border: 1px solid var(--glass-border); backdrop-filter: blur(10px); border-radius: var(--radius-xl); transition: all var(--transition-normal); cursor: pointer; position: relative; overflow: hidden;} .lab-card::before {content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: radial-gradient(circle at center,var(--lab-color) 0%,transparent 70%); opacity: 0; transition: opacity var(--transition-normal); z-index: 0;} .lab-card:hover {transform: translateY(-4px); border-color: var(--lab-color); box-shadow: 0 0 20px -5px var(--lab-color);} .lab-card:hover::before {opacity: .1;} .lab-card.active {background: var(--glass-bg-light); border-color: var(--lab-color); box-shadow: 0 0 30px -5px var(--lab-color); transform: translateY(-2px);} .lab-card.active::before {opacity: .15;} .lab-card .lab-icon {font-size: var(--text-4xl); line-height: 1; z-index: 1; filter: drop-shadow(0 0 10px rgba(0,0,0,.5)); transition: transform var(--transition-normal);} .lab-card:hover .lab-icon,.lab-card.active .lab-icon {transform: scale(1.15);} .lab-card .lab-name {font-size: var(--text-sm); font-weight: 700; text-align: center; color: var(--color-text-primary); z-index: 1;} .lab-card:focus-visible {outline: none; box-shadow: var(--focus-ring);} .lab-content {min-height: 400px; background: var(--glass-bg); border: 1px solid var(--glass-border); backdrop-filter: blur(20px); border-radius: var(--radius-2xl); padding: var(--space-6); box-shadow: var(--shadow-2xl); position: relative; overflow: hidden;} .lab-content::after {content: ""; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px; background: radial-gradient(circle,var(--color-primary-glow) 0%,transparent 70%); opacity: .1; pointer-events: none;} .lab-panel {animation: fadeIn .3s ease; position: relative; z-index: 1;} .lab-panel-header {display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-6); padding-bottom: var(--space-4); border-bottom: 1px solid var(--glass-border);} .lab-panel-header .panel-icon {font-size: var(--text-5xl); filter: drop-shadow(0 0 10px rgba(255,255,255,.2));} .lab-panel-header h2 {margin: 0; font-size: var(--text-2xl); color: var(--color-text-primary); text-shadow: 0 0 10px rgba(255,255,255,.3);} .lab-panel-header p {margin: var(--space-1) 0 0; color: var(--color-text-secondary); font-size: var(--text-base); font-weight: 500;} @keyframes fadeIn {from {opacity: 0; transform: translateY(10px);} to {opacity: 1; transform: translateY(0);}} @media (prefers-reduced-motion: reduce) {.lab-panel,.lab-card,.lab-icon {animation: none; transition: none;}} @media (max-width: 640px) {.lab-grid {grid-template-columns: repeat(3,1fr); gap: var(--space-2);} .lab-card {padding: var(--space-3);} .lab-card .lab-icon {font-size: var(--text-2xl);} .lab-content {padding: var(--space-4); border-radius: var(--radius-xl);} .lab-panel-header {flex-direction: column; text-align: center;}}.zenbaki-osoak-home {background: linear-gradient(135deg,#1e3c72 0%,#2a5298 100%); color: white; min-height: 100vh;} .zenbaki-osoak-home .hero {padding: 6rem 0 4rem; text-align: center;} .zenbaki-osoak-home .hero h1 {font-size: 4rem; margin-bottom: 1rem; text-shadow: 0 4px 6px rgba(0,0,0,.1);} .zenbaki-osoak-home .hero-subtitle {font-size: 2rem; font-weight: 300; margin-bottom: 2rem; opacity: .9;} .zenbaki-osoak-home .hero-description {font-size: 1.25rem; max-width: 600px; margin: 0 auto 3rem; line-height: 1.6; opacity: .8;} .zenbaki-osoak-home .features {padding: 4rem 0;} .zenbaki-osoak-home .features h2 {text-align: center; font-size: 2.5rem; margin-bottom: 3rem;} .zenbaki-osoak-home .features-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 2rem;} .zenbaki-osoak-home .feature-card {background: rgba(255,255,255,.1); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,.2); padding: 2.5rem; border-radius: 1rem; text-align: center; transition: transform .3s ease,background .3s ease;} .zenbaki-osoak-home .feature-card:hover {transform: translateY(-5px); background: rgba(255,255,255,.15);} .zenbaki-osoak-home .feature-icon {font-size: 3.5rem; margin-bottom: 1.5rem; background: linear-gradient(135deg,#fff,#f0f0f0); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent;} .zenbaki-osoak-home .feature-card h3 {font-size: 1.5rem; margin-bottom: 1rem;} .zenbaki-osoak-home .feature-card p {font-size: 1rem; line-height: 1.5; opacity: .8; margin-bottom: 1.5rem;} .zenbaki-osoak-home .feature-link {display: inline-block; color: #ffd700; text-decoration: none; font-weight: 600; transition: color .3s ease;} .zenbaki-osoak-home .feature-link:hover {color: #fff;} .zenbaki-osoak-home .curriculum {padding: 4rem 0 6rem;} .zenbaki-osoak-home .curriculum h2 {text-align: center; font-size: 2.5rem; margin-bottom: 1.5rem;} .zenbaki-osoak-home .curriculum-intro {text-align: center; max-width: 600px; margin: 0 auto 3rem; font-size: 1.1rem; opacity: .9;} .zenbaki-osoak-home .competencies {display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 1.5rem;} .zenbaki-osoak-home .competency-card {background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); padding: 2rem; border-radius: 1rem; text-align: center; transition: all .3s ease;} .zenbaki-osoak-home .competency-card:hover {background: rgba(255,255,255,.1); transform: scale(1.02);} .zenbaki-osoak-home .competency-icon {font-size: 2.5rem; display: block; margin-bottom: 1rem;} .zenbaki-osoak-home .competency-card h4 {font-size: 1.1rem; font-weight: 500; margin: 0;} @media (max-width: 768px) {.zenbaki-osoak-home .hero h1 {font-size: 3rem;} .zenbaki-osoak-home .hero-subtitle {font-size: 1.5rem;}}.zenbaki-osoak-theory {padding: var(--space-8) 0 var(--space-24); min-height: 100vh;} .zenbaki-osoak-theory .theory-header {text-align: center; margin-bottom: var(--space-16); padding: var(--space-8) 0;} .zenbaki-osoak-theory .theory-header h1 {font-size: var(--text-5xl); margin-bottom: var(--space-4); background: linear-gradient(135deg,#667eea 0%,#764ba2 30%,#f472b6 60%,#06b6d4 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; animation: gradientShift 8s ease infinite; background-size: 200% 200%;} @keyframes gradientShift {0%,100% {background-position: 0% 50%; .zenbaki-osoak-theory 50% {background-position: 100% 50%;} .zenbaki-osoak-theory .theory-subtitle {font-size: var(--text-xl); color: var(--color-text-secondary); margin-bottom: var(--space-4);} .zenbaki-osoak-theory .theory-description {color: var(--color-text-muted); max-width: 600px; margin: 0 auto;} .zenbaki-osoak-theory .theory-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(360px,1fr)); gap: var(--space-6); max-width: 1200px; margin: 0 auto;} .zenbaki-osoak-theory .theory-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.03) 100%); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,.1); border-left: 4px solid var(--card-color); border-radius: var(--radius-2xl); padding: var(--space-6); cursor: pointer; transition: all .4s cubic-bezier(.4,0,.2,1); position: relative; overflow: hidden;} .zenbaki-osoak-theory .theory-card::before {content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg,color-mix(in srgb,var(--card-color) 15%,transparent) 0%,transparent 50%); opacity: 0; transition: opacity .4s ease; pointer-events: none;} .zenbaki-osoak-theory .theory-card::after {content: ""; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle,color-mix(in srgb,var(--card-color) 10%,transparent) 0%,transparent 60%); opacity: 0; transition: opacity .4s ease; pointer-events: none;} .zenbaki-osoak-theory .theory-card:hover {transform: translateY(-6px) scale(1.01); box-shadow: 0 20px 40px -15px color-mix(in srgb,var(--card-color) 30%,transparent),0 0 60px -20px var(--card-color); border-color: color-mix(in srgb,var(--card-color) 60%,white);} .zenbaki-osoak-theory .theory-card:hover::before,.zenbaki-osoak-theory .theory-card:hover::after {opacity: 1;} .zenbaki-osoak-theory .theory-card.expanded {grid-column: 1 / -1; background: linear-gradient(145deg,rgba(255,255,255,.12) 0%,rgba(255,255,255,.05) 100%); border-left-width: 6px;} .zenbaki-osoak-theory .theory-card.expanded::before {opacity: 1;} .zenbaki-osoak-theory .card-header {display: flex; align-items: center; gap: var(--space-4); position: relative; z-index: 1;} .zenbaki-osoak-theory .card-icon {font-size: 2rem; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,color-mix(in srgb,var(--card-color) 25%,transparent) 0%,color-mix(in srgb,var(--card-color) 10%,transparent) 100%); border-radius: var(--radius-xl); border: 2px solid color-mix(in srgb,var(--card-color) 40%,transparent); transition: all .3s ease;} .zenbaki-osoak-theory .theory-card:hover .card-icon {transform: scale(1.1) rotate(5deg); border-color: var(--card-color); box-shadow: 0 0 20px color-mix(in srgb,var(--card-color) 40%,transparent);} .zenbaki-osoak-theory .card-title {flex: 1; font-size: var(--text-xl); font-weight: 600; color: var(--color-text-primary); margin: 0;} .zenbaki-osoak-theory .card-toggle {font-size: var(--text-2xl); font-weight: 300; color: var(--card-color); width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: color-mix(in srgb,var(--card-color) 10%,transparent); border: 2px solid color-mix(in srgb,var(--card-color) 30%,transparent); border-radius: var(--radius-lg); transition: all .3s ease;} .zenbaki-osoak-theory .theory-card:hover .card-toggle {background: var(--card-color); color: white; transform: scale(1.1);} .zenbaki-osoak-theory .card-content {max-height: 0; overflow: hidden; opacity: 0; transition: all .5s cubic-bezier(.4,0,.2,1); position: relative; z-index: 1;} .zenbaki-osoak-theory .card-content.visible {max-height: 3000px; opacity: 1; margin-top: var(--space-6); padding-top: var(--space-6); border-top: 2px solid color-mix(in srgb,var(--card-color) 30%,transparent);} .zenbaki-osoak-theory .content-section {color: var(--color-text-secondary); animation: fadeSlideIn .5s ease forwards;} @keyframes fadeSlideIn {from {opacity: 0; transform: translateY(10px); .zenbaki-osoak-theory to {opacity: 1; transform: translateY(0);} .zenbaki-osoak-theory .content-section h4 {color: var(--color-text-primary); font-size: var(--text-xl); font-weight: 700; margin: var(--space-8) 0 var(--space-4); display: flex; align-items: center; gap: var(--space-3);} .zenbaki-osoak-theory .content-section h4::before {content: ""; width: 4px; height: 24px; background: var(--card-color, linear-gradient(180deg, #667eea, #764ba2)); border-radius: 2px;} .zenbaki-osoak-theory .content-section h4:first-child {margin-top: 0;} .zenbaki-osoak-theory .content-section h5 {color: var(--color-text-primary); font-size: var(--text-lg); font-weight: 600; margin: var(--space-4) 0 var(--space-2);} .zenbaki-osoak-theory .content-section p {margin-bottom: var(--space-3); line-height: var(--line-height-relaxed); font-size: var(--text-base);} .zenbaki-osoak-theory .fraction-visual {display: flex; flex-direction: column; align-items: center; gap: var(--space-6); padding: var(--space-8); background: linear-gradient(135deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 50%,rgba(244,114,182,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); margin: var(--space-6) 0; position: relative; overflow: hidden;} .zenbaki-osoak-theory .fraction-visual::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg,#667eea,#764ba2,#f472b6);} .zenbaki-osoak-theory .big-fraction {display: flex; flex-direction: column; align-items: center; font-size: 4rem; font-weight: 800; color: var(--color-text-primary);} .zenbaki-osoak-theory .big-fraction .numerator,.zenbaki-osoak-theory .big-fraction .denominator {padding: var(--space-2) var(--space-8); transition: all .3s ease;} .zenbaki-osoak-theory .big-fraction .numerator {color: #667eea;} .zenbaki-osoak-theory .big-fraction .denominator {color: #f472b6;} .zenbaki-osoak-theory .big-fraction .fraction-line {width: 100px; height: 6px; background: linear-gradient(90deg,#667eea,#f472b6); border-radius: var(--radius-full); box-shadow: 0 0 20px rgba(102,126,234,.5);} .zenbaki-osoak-theory .fraction-labels {display: flex; flex-direction: column; gap: var(--space-3); text-align: left;} .zenbaki-osoak-theory .label {font-size: var(--text-base); padding: var(--space-2) var(--space-4); border-radius: var(--radius-lg); font-weight: 500;} .zenbaki-osoak-theory .label.num-label {background: rgba(102,126,234,.15); color: #818cf8; border-left: 3px solid #667eea;} .zenbaki-osoak-theory .label.den-label {background: rgba(244,114,182,.15); color: #f472b6; border-left: 3px solid #f472b6;} .zenbaki-osoak-theory .meanings-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); gap: var(--space-4); margin: var(--space-6) 0;} .zenbaki-osoak-theory .meaning-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius-xl); padding: var(--space-5); transition: all .3s ease; position: relative; overflow: hidden;} .zenbaki-osoak-theory .meaning-card::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg,#667eea,#06b6d4); transform: scaleX(0); transition: transform .3s ease;} .zenbaki-osoak-theory .meaning-card:hover {border-color: rgba(102,126,234,.4); transform: translateY(-4px); box-shadow: 0 10px 30px -10px rgba(102,126,234,.3);} .zenbaki-osoak-theory .meaning-card:hover::before {transform: scaleX(1);} .zenbaki-osoak-theory .meaning-card h5 {margin-top: 0; font-size: var(--text-lg); color: var(--color-text-primary); display: flex; align-items: center; gap: var(--space-2);} .zenbaki-osoak-theory .meaning-card .example {font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-3); padding: var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg); border-left: 3px solid #06b6d4;} .zenbaki-osoak-theory .tip-box {background: linear-gradient(135deg,rgba(16,185,129,.15) 0%,rgba(6,182,212,.15) 100%); border: 2px solid rgba(16,185,129,.3); border-left: 5px solid #10b981; border-radius: var(--radius-xl); padding: var(--space-5); margin: var(--space-8) 0; font-size: var(--text-base); position: relative; overflow: hidden;} .zenbaki-osoak-theory .tip-box::before {content: "💡"; position: absolute; top: -10px; right: -10px; font-size: 4rem; opacity: .15;} .zenbaki-osoak-theory .warning-box {background: linear-gradient(135deg,rgba(245,158,11,.15) 0%,rgba(239,68,68,.15) 100%); border: 2px solid rgba(245,158,11,.3); border-left: 5px solid #f59e0b; border-radius: var(--radius-xl); padding: var(--space-5); margin: var(--space-8) 0; font-size: var(--text-base); position: relative; overflow: hidden;} .zenbaki-osoak-theory .warning-box::before {content: "⚠️"; position: absolute; top: -10px; right: -10px; font-size: 4rem; opacity: .15;} .zenbaki-osoak-theory .type-cards {display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zenbaki-osoak-theory .type-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); text-align: center; transition: all .3s ease; position: relative; overflow: hidden;} .zenbaki-osoak-theory .type-card::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;} .zenbaki-osoak-theory .type-card.proper::before {background: linear-gradient(90deg,#10b981,#34d399);} .zenbaki-osoak-theory .type-card.improper::before {background: linear-gradient(90deg,#f59e0b,#fbbf24);} .zenbaki-osoak-theory .type-card.unit::before {background: linear-gradient(90deg,#6366f1,#818cf8);} .zenbaki-osoak-theory .type-card:hover {transform: translateY(-6px) scale(1.02);} .zenbaki-osoak-theory .type-card.proper:hover {border-color: #10b981; box-shadow: 0 15px 40px -15px rgba(16,185,129,.4);} .zenbaki-osoak-theory .type-card.improper:hover {border-color: #f59e0b; box-shadow: 0 15px 40px -15px rgba(245,158,11,.4);} .zenbaki-osoak-theory .type-card.unit:hover {border-color: #6366f1; box-shadow: 0 15px 40px -15px rgba(99,102,241,.4);} .zenbaki-osoak-theory .type-card h5 {margin-top: var(--space-2); font-size: var(--text-lg); font-weight: 700;} .zenbaki-osoak-theory .type-card .fraction-example {font-size: var(--text-3xl); margin: var(--space-4) 0; padding: var(--space-4); background: rgba(0,0,0,.2); border-radius: var(--radius-xl);} .zenbaki-osoak-theory .type-card .value {color: var(--color-primary-light); font-weight: 700; font-size: var(--text-base);} .zenbaki-osoak-theory .type-card .example {font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-2); font-weight: 500;} .zenbaki-osoak-theory .fraction-display {display: inline-flex; flex-direction: column; align-items: center; vertical-align: middle; font-family: var(--font-mono); font-weight: 700; padding: 0 var(--space-1);} .zenbaki-osoak-theory .fraction-display .num {padding: 0 var(--space-2); color: #818cf8;} .zenbaki-osoak-theory .fraction-display .line {width: 100%; height: 2px; background: linear-gradient(90deg,#667eea,#f472b6); border-radius: 1px;} .zenbaki-osoak-theory .fraction-display .den {padding: 0 var(--space-2); color: #f472b6;} .zenbaki-osoak-theory .conversion-example {background: linear-gradient(145deg,rgba(102,126,234,.1) 0%,rgba(244,114,182,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-6) 0;} .zenbaki-osoak-theory .conversion-step {display: flex; align-items: center; justify-content: center; gap: var(--space-5); flex-wrap: wrap; font-size: var(--text-xl);} .zenbaki-osoak-theory .arrow {color: #06b6d4; font-size: var(--text-2xl); font-weight: 700;} .zenbaki-osoak-theory .result {padding: var(--space-2) var(--space-4); background: rgba(6,182,212,.15); border-radius: var(--radius-lg); color: #22d3ee;} .zenbaki-osoak-theory .mixed-number {display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-3) var(--space-4); background: linear-gradient(135deg,rgba(16,185,129,.2),rgba(6,182,212,.2)); border-radius: var(--radius-xl); border: 2px solid rgba(16,185,129,.3);} .zenbaki-osoak-theory .mixed-number .whole {font-size: var(--text-3xl); font-weight: 800; color: #10b981;} .zenbaki-osoak-theory .mixed-number .fraction-part {display: flex; flex-direction: column; font-size: var(--text-base);} .zenbaki-osoak-theory .equivalence-demo {background: linear-gradient(145deg,rgba(244,114,182,.1) 0%,rgba(6,182,212,.1) 100%); border: 2px solid rgba(244,114,182,.2); border-radius: var(--radius-2xl); padding: var(--space-8); margin: var(--space-6) 0;} .zenbaki-osoak-theory .fractions-row {display: flex; align-items: center; justify-content: center; gap: var(--space-6); flex-wrap: wrap;} .zenbaki-osoak-theory .frac-visual {display: flex; flex-direction: column; align-items: center; gap: var(--space-3); padding: var(--space-4); background: rgba(0,0,0,.2); border-radius: var(--radius-xl); transition: all .3s ease;} .zenbaki-osoak-theory .frac-visual:hover {transform: scale(1.05);} .zenbaki-osoak-theory .frac-visual .fraction-display {font-size: var(--text-2xl);} .zenbaki-osoak-theory .visual-bar {width: 100px; height: 16px; background: rgba(255,255,255,.1); border-radius: var(--radius-full); overflow: hidden; border: 2px solid rgba(255,255,255,.2);} .zenbaki-osoak-theory .visual-bar .filled {height: 100%; background: linear-gradient(90deg,#667eea,#f472b6); border-radius: var(--radius-full); transition: width .5s ease;} .zenbaki-osoak-theory .equals {font-size: var(--text-3xl); color: #10b981; font-weight: 800; text-shadow: 0 0 20px rgba(16,185,129,.5);} .zenbaki-osoak-theory .formula-box {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.15); border-radius: var(--radius-2xl); padding: var(--space-5); margin: var(--space-5) 0; display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); font-family: var(--font-mono); transition: all .3s ease;} .zenbaki-osoak-theory .formula-box:hover {border-color: rgba(102,126,234,.4); box-shadow: 0 10px 30px -10px rgba(102,126,234,.3);} .zenbaki-osoak-theory .formula-box.highlight {background: linear-gradient(135deg,rgba(102,126,234,.15) 0%,rgba(6,182,212,.15) 100%); border-color: rgba(102,126,234,.4); box-shadow: 0 0 30px -10px rgba(102,126,234,.4);} .zenbaki-osoak-theory .example-steps {display: flex; flex-direction: column; gap: var(--space-4); margin: var(--space-6) 0;} .zenbaki-osoak-theory .step {display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-3); background: rgba(255,255,255,.03); border-radius: var(--radius-xl); transition: all .3s ease;} .zenbaki-osoak-theory .step:hover {background: rgba(255,255,255,.06);} .zenbaki-osoak-theory .step-num {width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,#667eea,#764ba2); color: white; border-radius: var(--radius-full); font-size: var(--text-base); font-weight: 800; flex-shrink: 0; box-shadow: 0 4px 15px rgba(102,126,234,.4);} .zenbaki-osoak-theory .method-box {background: linear-gradient(145deg,rgba(6,182,212,.1) 0%,rgba(102,126,234,.1) 100%); border: 2px solid rgba(6,182,212,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-6) 0;} .zenbaki-osoak-theory .method-box ol {margin: var(--space-3) 0; padding-left: var(--space-8);} .zenbaki-osoak-theory .method-box li {margin: var(--space-3) 0; padding-left: var(--space-2);} .zenbaki-osoak-theory .method-box li::marker {color: #06b6d4; font-weight: 700;} .zenbaki-osoak-theory .comparison-example {background: linear-gradient(145deg,rgba(139,92,246,.1) 0%,rgba(6,182,212,.1) 100%); border: 2px solid rgba(139,92,246,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-5) 0; display: flex; align-items: center; justify-content: center; gap: var(--space-5); flex-wrap: wrap; font-size: var(--text-xl);} .zenbaki-osoak-theory .comparison-op {font-size: var(--text-3xl); font-weight: 800; padding: var(--space-3) var(--space-4); border-radius: var(--radius-xl);} .zenbaki-osoak-theory .comparison-op.greater {color: #10b981; background: rgba(16,185,129,.15);} .zenbaki-osoak-theory .comparison-op.less {color: #ef4444; background: rgba(239,68,68,.15);} .zenbaki-osoak-theory .explanation {color: var(--color-text-muted); font-size: var(--text-sm); padding: var(--space-2) var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg);} .zenbaki-osoak-theory .example-box {background: linear-gradient(145deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); margin: var(--space-5) 0; transition: all .3s ease;} .zenbaki-osoak-theory .example-box:hover {border-color: rgba(102,126,234,.3);} .zenbaki-osoak-theory .example-box .example {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); padding: var(--space-4); background: rgba(0,0,0,.15); border-radius: var(--radius-xl); margin-top: var(--space-3);} .zenbaki-osoak-theory .cross-simplify {display: flex; flex-direction: column; align-items: center; gap: var(--space-3); padding: var(--space-4); background: rgba(0,0,0,.15); border-radius: var(--radius-xl);} .zenbaki-osoak-theory .cross-simplify .fractions {display: flex; align-items: center; gap: var(--space-4);} .zenbaki-osoak-theory .cross-simplify .crossed {text-decoration: line-through; color: var(--color-text-muted); opacity: .5;} .zenbaki-osoak-theory .paren {font-size: var(--text-2xl); color: #f472b6;} .zenbaki-osoak-theory .power {font-size: var(--text-sm); vertical-align: super; margin-left: 2px; color: #06b6d4; font-weight: 700;} .zenbaki-osoak-theory .rules-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zenbaki-osoak-theory .rule-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); text-align: center; transition: all .3s ease;} .zenbaki-osoak-theory .rule-card:hover {border-color: rgba(102,126,234,.4); transform: translateY(-4px); box-shadow: 0 10px 30px -10px rgba(102,126,234,.3);} .zenbaki-osoak-theory .rule-card h5 {margin-top: 0; color: #818cf8; font-size: var(--text-base);} .zenbaki-osoak-theory .rule-card .formula {font-family: var(--font-mono); font-size: var(--text-lg); padding: var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg); margin-top: var(--space-3);} .zenbaki-osoak-theory .solved-example {background: linear-gradient(145deg,rgba(102,126,234,.1) 0%,rgba(139,92,246,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); padding: var(--space-8); margin: var(--space-6) 0;} .zenbaki-osoak-theory .solved-example .expression {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); padding: var(--space-5); background: rgba(0,0,0,.2); border-radius: var(--radius-xl); margin-bottom: var(--space-6); border: 2px solid rgba(102,126,234,.3);} .zenbaki-osoak-theory .solved-example .steps {display: flex; flex-direction: column; gap: var(--space-4);} .zenbaki-osoak-theory .solved-example .step {background: rgba(255,255,255,.05); border-radius: var(--radius-xl); padding: var(--space-4) var(--space-5); border-left: 4px solid;} .zenbaki-osoak-theory .solved-example .step:nth-child(1) {border-color: #667eea;} .zenbaki-osoak-theory .solved-example .step:nth-child(2) {border-color: #f59e0b;} .zenbaki-osoak-theory .solved-example .step:nth-child(3) {border-color: #10b981;} .zenbaki-osoak-theory .decimal-types {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zenbaki-osoak-theory .type-item {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); transition: all .3s ease;} .zenbaki-osoak-theory .type-item:hover {border-color: rgba(6,182,212,.4); transform: translateY(-4px);} .zenbaki-osoak-theory .type-item h5 {margin-top: 0; color: #22d3ee; font-size: var(--text-lg);} .zenbaki-osoak-theory .type-item .example {font-family: var(--font-mono); color: var(--color-text-primary); font-size: var(--text-xl); margin: var(--space-3) 0; padding: var(--space-3); background: rgba(6,182,212,.1); border-radius: var(--radius-lg); text-align: center;} .zenbaki-osoak-theory .type-item .condition {font-size: var(--text-sm); color: var(--color-text-muted); padding: var(--space-2) var(--space-3); background: rgba(0,0,0,.2); border-radius: var(--radius-lg);} .zenbaki-osoak-theory .conversion-steps {display: flex; flex-direction: column; gap: var(--space-5); margin: var(--space-6) 0;} .zenbaki-osoak-theory .step-card {background: linear-gradient(145deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-left: 5px solid; border-radius: var(--radius-2xl); padding: var(--space-5); transition: all .3s ease;} .zenbaki-osoak-theory .step-card:nth-child(1) {border-left-color: #10b981;} .zenbaki-osoak-theory .step-card:nth-child(2) {border-left-color: #f59e0b;} .zenbaki-osoak-theory .step-card:nth-child(3) {border-left-color: #6366f1;} .zenbaki-osoak-theory .step-card:hover {transform: translateX(8px);} .zenbaki-osoak-theory .step-card h5 {margin-top: 0; font-size: var(--text-lg);} .zenbaki-osoak-theory .step-card:nth-child(1) h5 {color: #34d399;} .zenbaki-osoak-theory .step-card:nth-child(2) h5 {color: #fbbf24;} .zenbaki-osoak-theory .step-card:nth-child(3) h5 {color: #818cf8;} .zenbaki-osoak-theory .step-card ol {margin: var(--space-3) 0; padding-left: var(--space-6);} .zenbaki-osoak-theory .step-card li {margin: var(--space-2) 0;} .zenbaki-osoak-theory .magnitude-types {display: grid; grid-template-columns: repeat(auto-fit,minmax(320px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zenbaki-osoak-theory .magnitude-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-6); transition: all .3s ease;} .zenbaki-osoak-theory .magnitude-card.direct {border-top: 4px solid #10b981;} .zenbaki-osoak-theory .magnitude-card.inverse {border-top: 4px solid #f59e0b;} .zenbaki-osoak-theory .magnitude-card.direct:hover {border-color: #10b981; box-shadow: 0 15px 40px -15px rgba(16,185,129,.3);} .zenbaki-osoak-theory .magnitude-card.inverse:hover {border-color: #f59e0b; box-shadow: 0 15px 40px -15px rgba(245,158,11,.3);} .zenbaki-osoak-theory .magnitude-card h5 {margin-top: 0; font-size: var(--text-xl);} .zenbaki-osoak-theory .magnitude-card.direct h5 {color: #34d399;} .zenbaki-osoak-theory .magnitude-card.inverse h5 {color: #fbbf24;} .zenbaki-osoak-theory .magnitude-card .formula {background: rgba(0,0,0,.2); border-radius: var(--radius-xl); padding: var(--space-3) var(--space-4); margin: var(--space-4) 0; font-family: var(--font-mono); text-align: center; font-size: var(--text-lg);} .zenbaki-osoak-theory .magnitude-card .examples {font-size: var(--text-sm); color: var(--color-text-muted); display: flex; flex-direction: column; gap: var(--space-2);} .zenbaki-osoak-theory .magnitude-card .examples p {margin: 0; padding: var(--space-2); background: rgba(255,255,255,.03); border-radius: var(--radius-lg);} .zenbaki-osoak-theory .rule-three-example {background: linear-gradient(145deg,rgba(244,114,182,.1) 0%,rgba(102,126,234,.1) 100%); border: 2px solid rgba(244,114,182,.2); border-radius: var(--radius-2xl); padding: var(--space-8); margin: var(--space-6) 0;} .zenbaki-osoak-theory .rule-three-example .setup {display: flex; flex-direction: column; gap: var(--space-3); margin: var(--space-5) 0; padding: var(--space-5); background: rgba(0,0,0,.2); border-radius: var(--radius-xl);} .zenbaki-osoak-theory .rule-three-example .proportion {display: flex; align-items: center; justify-content: center; gap: var(--space-5); font-family: var(--font-mono); font-size: var(--text-xl); padding: var(--space-2);} .zenbaki-osoak-theory .rule-three-example .solution {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; margin-top: var(--space-5); padding: var(--space-5); background: linear-gradient(135deg,rgba(16,185,129,.15),rgba(6,182,212,.15)); border-radius: var(--radius-xl); border: 2px solid rgba(16,185,129,.3); font-size: var(--text-xl);} .zenbaki-osoak-theory .proportion-box {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-6); background: linear-gradient(135deg,rgba(102,126,234,.1),rgba(244,114,182,.1)); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); margin: var(--space-5) 0; font-size: var(--text-2xl); font-family: var(--font-mono);} .zenbaki-osoak-theory .percent-fraction {display: flex; align-items: center; justify-content: center; gap: var(--space-5); font-size: var(--text-2xl); margin: var(--space-6) 0; padding: var(--space-6); background: linear-gradient(135deg,rgba(139,92,246,.1),rgba(244,114,182,.1)); border: 2px solid rgba(139,92,246,.2); border-radius: var(--radius-2xl);} .zenbaki-osoak-theory .percent {font-size: var(--text-4xl); font-weight: 800; background: linear-gradient(135deg,#8b5cf6,#f472b6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;} .zenbaki-osoak-theory .calculation-examples {display: flex; flex-direction: column; gap: var(--space-5); margin: var(--space-6) 0;} .zenbaki-osoak-theory .calculation-examples .example-box {margin: 0;} .zenbaki-osoak-theory .calculation-examples .calculation {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; margin-top: var(--space-3); font-size: var(--text-xl); font-family: var(--font-mono);} .zenbaki-osoak-theory .increase-decrease {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: var(--space-5); margin: var(--space-6) 0;} .zenbaki-osoak-theory .operation-card {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); transition: all .3s ease;} .zenbaki-osoak-theory .operation-card.increase {border-top: 4px solid #10b981;} .zenbaki-osoak-theory .operation-card.decrease {border-top: 4px solid #ef4444;} .zenbaki-osoak-theory .operation-card.increase:hover {border-color: #10b981; box-shadow: 0 15px 40px -15px rgba(16,185,129,.3);} .zenbaki-osoak-theory .operation-card.decrease:hover {border-color: #ef4444; box-shadow: 0 15px 40px -15px rgba(239,68,68,.3);} .zenbaki-osoak-theory .operation-card h5 {margin-top: 0; font-size: var(--text-xl);} .zenbaki-osoak-theory .operation-card.increase h5 {color: #34d399;} .zenbaki-osoak-theory .operation-card.decrease h5 {color: #f87171;} .zenbaki-osoak-theory .operation-card .example {background: rgba(0,0,0,.2); border-radius: var(--radius-xl); padding: var(--space-4); margin-top: var(--space-3); font-family: var(--font-mono); font-size: var(--text-base);} .zenbaki-osoak-theory .equivalents-table {background: linear-gradient(145deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); overflow: hidden; margin: var(--space-6) 0;} .zenbaki-osoak-theory .table-row {display: grid; grid-template-columns: 1fr 1fr 1fr; padding: var(--space-4) var(--space-5); text-align: center; border-bottom: 1px solid rgba(255,255,255,.1); transition: all .3s ease;} .zenbaki-osoak-theory .table-row:last-child {border-bottom: none;} .zenbaki-osoak-theory .table-row:not(.header):hover {background: rgba(102,126,234,.1);} .zenbaki-osoak-theory .table-row.header {background: linear-gradient(90deg,rgba(102,126,234,.2),rgba(139,92,246,.2)); font-weight: 700; color: var(--color-text-primary); font-size: var(--text-base);} .zenbaki-osoak-theory [dir="rtl"] .theory-card {border-left: none; border-right: 4px solid var(--card-color);} .zenbaki-osoak-theory [dir="rtl"] .content-section h4::before {margin-left: var(--space-3); margin-right: 0;} .zenbaki-osoak-theory [dir="rtl"] .tip-box,.zenbaki-osoak-theory [dir="rtl"] .warning-box {border-left: none; border-right: 5px solid;} .zenbaki-osoak-theory [dir="rtl"] .tip-box {border-right-color: #10b981;} .zenbaki-osoak-theory [dir="rtl"] .warning-box {border-right-color: #f59e0b;} .zenbaki-osoak-theory [dir="rtl"] .step-card {border-left: none; border-right: 5px solid;} .zenbaki-osoak-theory [dir="rtl"] .step-card:nth-child(1) {border-right-color: #10b981;} .zenbaki-osoak-theory [dir="rtl"] .step-card:nth-child(2) {border-right-color: #f59e0b;} .zenbaki-osoak-theory [dir="rtl"] .step-card:nth-child(3) {border-right-color: #6366f1;} .zenbaki-osoak-theory [dir="rtl"] .label {border-left: none; border-right: 3px solid;} .zenbaki-osoak-theory [dir="rtl"] .label.num-label {border-right-color: #667eea;} .zenbaki-osoak-theory [dir="rtl"] .label.den-label {border-right-color: #f472b6;} .zenbaki-osoak-theory [dir="rtl"] .meaning-card .example {border-left: none; border-right: 3px solid #06b6d4;} .zenbaki-osoak-theory [dir="rtl"] .solved-example .step {border-left: none; border-right: 4px solid;} .zenbaki-osoak-theory .priority-list {display: flex; flex-direction: column; gap: var(--space-3); margin: var(--space-6) 0;} .zenbaki-osoak-theory .priority-item {display: flex; align-items: center; gap: var(--space-4); padding: var(--space-4); background: linear-gradient(145deg,rgba(255,255,255,.05) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.08); border-radius: var(--radius-xl); transition: all .3s ease;} .zenbaki-osoak-theory .priority-item:hover {border-color: rgba(102,126,234,.3); background: rgba(255,255,255,.08);} .zenbaki-osoak-theory .priority-item:nth-child(1) {border-left: 4px solid #ef4444;} .zenbaki-osoak-theory .priority-item:nth-child(2) {border-left: 4px solid #f59e0b;} .zenbaki-osoak-theory .priority-item:nth-child(3) {border-left: 4px solid #10b981;} .zenbaki-osoak-theory .priority-item:nth-child(4) {border-left: 4px solid #06b6d4;} .zenbaki-osoak-theory .priority-num {width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; font-size: var(--text-lg); font-weight: 800; border-radius: var(--radius-full); flex-shrink: 0;} .zenbaki-osoak-theory .priority-item:nth-child(1) .priority-num {background: linear-gradient(135deg,#ef4444,#f97316); color: white;} .zenbaki-osoak-theory .priority-item:nth-child(2) .priority-num {background: linear-gradient(135deg,#f59e0b,#fbbf24); color: white;} .zenbaki-osoak-theory .priority-item:nth-child(3) .priority-num {background: linear-gradient(135deg,#10b981,#34d399); color: white;} .zenbaki-osoak-theory .priority-item:nth-child(4) .priority-num {background: linear-gradient(135deg,#06b6d4,#22d3ee); color: white;} .zenbaki-osoak-theory .priority-text {font-size: var(--text-base); color: var(--color-text-secondary);} .zenbaki-osoak-theory .example-box {background: linear-gradient(145deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%); border: 2px solid rgba(255,255,255,.1); border-radius: var(--radius-2xl); padding: var(--space-5); margin: var(--space-5) 0; transition: all .3s ease;} .zenbaki-osoak-theory .example-box:hover {border-color: rgba(102,126,234,.3); box-shadow: 0 5px 20px -10px rgba(102,126,234,.3);} .zenbaki-osoak-theory .example-box .example {display: flex; align-items: center; justify-content: center; gap: var(--space-3); flex-wrap: wrap; font-size: var(--text-lg);} .zenbaki-osoak-theory .example-box p {margin-bottom: var(--space-3); font-weight: 600; color: var(--color-text-primary);} .zenbaki-osoak-theory .solved-example {background: linear-gradient(145deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 50%,rgba(6,182,212,.1) 100%); border: 2px solid rgba(102,126,234,.2); border-radius: var(--radius-2xl); padding: var(--space-6); margin: var(--space-6) 0; position: relative; overflow: hidden;} .zenbaki-osoak-theory .solved-example::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,#667eea,#764ba2,#06b6d4);} .zenbaki-osoak-theory .solved-example p {margin-bottom: var(--space-4); font-size: var(--text-lg); color: var(--color-text-primary);} .zenbaki-osoak-theory .solved-example .expression {display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; font-size: var(--text-xl); padding: var(--space-4); background: rgba(0,0,0,.2); border-radius: var(--radius-xl); margin-bottom: var(--space-5);} .zenbaki-osoak-theory .solved-example .steps {display: flex; flex-direction: column; gap: var(--space-3);} .zenbaki-osoak-theory .solved-example .step {display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-4); background: rgba(255,255,255,.04); border-radius: var(--radius-xl); border-left: 4px solid rgba(102,126,234,.4); transition: all .3s ease;} .zenbaki-osoak-theory .solved-example .step:hover {background: rgba(255,255,255,.08); border-left-color: #667eea;} .zenbaki-osoak-theory .operation {font-size: var(--text-xl); font-weight: 700; color: #f472b6; padding: 0 var(--space-2);} .zenbaki-osoak-theory .fraction-display.highlight {background: linear-gradient(135deg,rgba(16,185,129,.2) 0%,rgba(6,182,212,.2) 100%); border: 2px solid rgba(16,185,129,.4); border-radius: var(--radius-lg); padding: var(--space-2);} .zenbaki-osoak-theory .fraction-display.highlight .num,.zenbaki-osoak-theory .fraction-display.highlight .den {color: #10b981;} .zenbaki-osoak-theory .paren {font-size: var(--text-2xl); font-weight: 300; color: var(--color-text-secondary);} .zenbaki-osoak-theory .power {font-size: var(--text-lg); position: relative; top: -.8em; color: #f59e0b; font-weight: 700;} .zenbaki-osoak-theory .tip-box.warning {background: linear-gradient(135deg,rgba(245,158,11,.15) 0%,rgba(239,68,68,.15) 100%); border: 2px solid rgba(245,158,11,.3); border-left: 5px solid #f59e0b;} .zenbaki-osoak-theory .tip-box.warning::before {content: "⚠️";} @media (max-width: 768px) {.theory-header h1 {font-size: var(--text-4xl); .zenbaki-osoak-theory .theory-grid {grid-template-columns: 1fr;} .zenbaki-osoak-theory .theory-card.expanded {grid-column: 1;} .zenbaki-osoak-theory .meanings-grid,.zenbaki-osoak-theory .type-cards {grid-template-columns: 1fr;} .zenbaki-osoak-theory .formula-box {font-size: var(--text-base); padding: var(--space-4);} .zenbaki-osoak-theory .conversion-step {flex-direction: column; gap: var(--space-3);} .zenbaki-osoak-theory .fractions-row {flex-direction: column;} .zenbaki-osoak-theory .big-fraction {font-size: 3rem;} .zenbaki-osoak-theory .fraction-visual {padding: var(--space-5);} .zenbaki-osoak-theory .magnitude-types,.zenbaki-osoak-theory .increase-decrease,.zenbaki-osoak-theory .decimal-types {grid-template-columns: 1fr;} .zenbaki-osoak-theory .comparison-example,.zenbaki-osoak-theory .percent-fraction {flex-direction: column; gap: var(--space-3);}.integer-calculator-lab {display: flex; flex-direction: column; gap: 2rem; align-items: center; max-width: 600px; margin: 0 auto;} .integer-calculator-lab .lab-controls {display: flex; flex-direction: column; gap: 1.5rem; padding: 2rem; width: 100%; border-radius: var(--radius-lg); background: rgba(var(--surface-color-rgb),.7); border: 1px solid rgba(var(--text-color-rgb),.1);} .integer-calculator-lab .input-group {display: flex; flex-direction: column; gap: .5rem;} .integer-calculator-lab .input-group label {font-weight: 600; color: var(--text-color); font-size: .95rem;} .integer-calculator-lab .glass-input {background: rgba(var(--bg-color-rgb),.8); border: 2px solid rgba(var(--primary-color-rgb),.2); color: var(--text-color); padding: .75rem 1rem; border-radius: var(--radius-md); font-size: 1rem; transition: all .3s ease; font-family: inherit;} .integer-calculator-lab .glass-input:focus {outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb),.1);} .integer-calculator-lab .btn {margin-top: 1rem; padding: 1rem; font-size: 1.1rem; width: 100%;} .integer-calculator-lab .result-card {display: flex; flex-direction: column; align-items: center; gap: 1rem; padding: 2rem; width: 100%; border-radius: var(--radius-lg); background: rgba(var(--surface-color-rgb),.8); border: 2px solid var(--primary-color); text-align: center; box-shadow: 0 4px 6px -1px rgba(var(--primary-color-rgb),.1);} .integer-calculator-lab .result-card.error {border-color: #ef4444; background: rgba(239,68,68,.1);} .integer-calculator-lab .result-card .result-value {font-size: 3rem; font-weight: 800; letter-spacing: -.05em;} .integer-calculator-lab .result-card p {font-size: 1.1rem; color: var(--text-color); opacity: .9; margin: 0;} .integer-calculator-lab .negative-val {color: #ef4444;} .integer-calculator-lab .positive-val {color: var(--primary-color);}.lab-page {padding: var(--space-8) 0; min-height: 100vh; background: var(--color-bg);} .lab-header {text-align: center; margin-bottom: var(--space-8);} .lab-header h1 {margin-bottom: var(--space-4); font-size: var(--text-4xl); background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; filter: drop-shadow(0 0 2em var(--color-primary-glow));} .lab-instructions {color: var(--color-text-secondary); max-width: 600px; margin: 0 auto; font-size: var(--text-lg); font-weight: 500;} .lab-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(140px,1fr)); gap: var(--space-3); margin-bottom: var(--space-8); max-width: 900px; margin-left: auto; margin-right: auto;} .lab-card {display: flex; flex-direction: column; align-items: center; gap: var(--space-2); padding: var(--space-4); background: var(--glass-bg); border: 1px solid var(--glass-border); backdrop-filter: blur(10px); border-radius: var(--radius-xl); transition: all var(--transition-normal); cursor: pointer; position: relative; overflow: hidden;} .lab-card::before {content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: radial-gradient(circle at center,var(--lab-color) 0%,transparent 70%); opacity: 0; transition: opacity var(--transition-normal); z-index: 0;} .lab-card:hover {transform: translateY(-4px); border-color: var(--lab-color); box-shadow: 0 0 20px -5px var(--lab-color);} .lab-card:hover::before {opacity: .1;} .lab-card.active {background: var(--glass-bg-light); border-color: var(--lab-color); box-shadow: 0 0 30px -5px var(--lab-color); transform: translateY(-2px);} .lab-card.active::before {opacity: .15;} .lab-card .lab-icon {font-size: var(--text-4xl); line-height: 1; z-index: 1; filter: drop-shadow(0 0 10px rgba(0,0,0,.5)); transition: transform var(--transition-normal);} .lab-card:hover .lab-icon,.lab-card.active .lab-icon {transform: scale(1.15);} .lab-card .lab-name {font-size: var(--text-sm); font-weight: 700; text-align: center; color: var(--color-text-primary); z-index: 1;} .lab-card:focus-visible {outline: none; box-shadow: var(--focus-ring);} .lab-content {min-height: 400px; background: var(--glass-bg); border: 1px solid var(--glass-border); backdrop-filter: blur(20px); border-radius: var(--radius-2xl); padding: var(--space-6); box-shadow: var(--shadow-2xl); position: relative; overflow: hidden;} .lab-content::after {content: ""; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px; background: radial-gradient(circle,var(--color-primary-glow) 0%,transparent 70%); opacity: .1; pointer-events: none;} .lab-panel {animation: fadeIn .3s ease; position: relative; z-index: 1;} .lab-panel-header {display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-6); padding-bottom: var(--space-4); border-bottom: 1px solid var(--glass-border);} .lab-panel-header .panel-icon {font-size: var(--text-5xl); filter: drop-shadow(0 0 10px rgba(255,255,255,.2));} .lab-panel-header h2 {margin: 0; font-size: var(--text-2xl); color: var(--color-text-primary); text-shadow: 0 0 10px rgba(255,255,255,.3);} .lab-panel-header p {margin: var(--space-1) 0 0; color: var(--color-text-secondary); font-size: var(--text-base); font-weight: 500;} @keyframes fadeIn {from {opacity: 0; transform: translateY(10px);} to {opacity: 1; transform: translateY(0);}} @media (prefers-reduced-motion: reduce) {.lab-panel,.lab-card,.lab-icon {animation: none; transition: none;}} @media (max-width: 640px) {.lab-grid {grid-template-columns: repeat(3,1fr); gap: var(--space-2);} .lab-card {padding: var(--space-3);} .lab-card .lab-icon {font-size: var(--text-2xl);} .lab-content {padding: var(--space-4); border-radius: var(--radius-xl);} .lab-panel-header {flex-direction: column; text-align: center;}}.dbh1-algebra-home {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-main); background-image: var(--bg-pattern); color: var(--text-main);} .dbh1-algebra-home .container {max-width: 1200px; margin: 0 auto;} .dbh1-algebra-home .page-header {display: flex; align-items: flex-start; gap: 2rem; margin-bottom: 4rem;} .dbh1-algebra-home .back-button {display: flex; align-items: center; gap: .5rem; padding: .75rem 1.25rem; border-radius: 12px; color: var(--text-main); text-decoration: none; font-weight: 500; transition: all .3s ease; white-space: nowrap;} .dbh1-algebra-home .back-button:hover {background: rgba(255,255,255,.1); transform: translateX(-4px); border-color: var(--accent-primary); box-shadow: 0 0 15px rgba(230,0,126,.3);} .dbh1-algebra-home .title-container {flex: 1; padding: 2rem; border-radius: 16px; text-align: center; position: relative; overflow: hidden;} .dbh1-algebra-home .title-container::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,var(--accent-primary),var(--accent-secondary),var(--accent-tertiary));} .dbh1-algebra-home .title-container h1 {font-size: 2.5rem; margin-bottom: .5rem; background: linear-gradient(135deg,#fff,var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-shadow: 0 0 30px rgba(0,240,255,.2);} .dbh1-algebra-home .subtitle {font-size: 1.1rem; color: var(--text-muted);} .dbh1-algebra-home .features-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); gap: 2rem; padding: 1rem;} .dbh1-algebra-home .feature-card {padding: 2.5rem; border-radius: 16px; text-align: center; transition: all .3s cubic-bezier(.4,0,.2,1); position: relative; overflow: hidden; display: flex; flex-direction: column;} .dbh1-algebra-home .feature-card::before {content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg,rgba(230,0,126,.1) 0%,rgba(0,240,255,.05) 100%); opacity: 0; transition: opacity .3s ease; z-index: 0;} .dbh1-algebra-home .feature-card:hover {transform: translateY(-8px); border-color: var(--accent-secondary); box-shadow: 0 10px 30px rgba(0,240,255,.15),inset 0 0 20px rgba(0,240,255,.05);} .dbh1-algebra-home .feature-card:hover::before {opacity: 1;} .dbh1-algebra-home .feature-card>* {position: relative; z-index: 1;} .dbh1-algebra-home .feature-icon {font-size: 3rem; margin-bottom: 1.5rem; display: inline-block; padding: 1rem; background: rgba(255,255,255,.05); border-radius: 50%; border: 1px solid rgba(255,255,255,.1); box-shadow: inset 0 0 20px rgba(0,0,0,.5);} .dbh1-algebra-home .feature-card h3 {font-size: 1.5rem; margin-bottom: 1rem; color: var(--accent-secondary); text-shadow: 0 0 10px rgba(0,240,255,.3);} .dbh1-algebra-home .feature-card p {color: var(--text-muted); line-height: 1.6; margin-bottom: 2rem; flex: 1;} .dbh1-algebra-home .feature-link {display: inline-block; padding: .75rem 1.5rem; background: rgba(0,240,255,.1); color: var(--accent-secondary); text-decoration: none; border-radius: 8px; font-weight: 600; transition: all .3s ease; border: 1px solid rgba(0,240,255,.2); text-shadow: 0 0 8px rgba(0,240,255,.4);} .dbh1-algebra-home .feature-card:hover .feature-link {background: var(--accent-secondary); color: #000; box-shadow: 0 0 20px rgba(0,240,255,.4);} @media (max-width: 768px) {.dbh1-algebra-home .page-header {flex-direction: column; align-items: stretch; gap: 1rem;} .dbh1-algebra-home .back-button {align-self: flex-start;}}.dbh1-algebra-theory {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-main); background-image: var(--bg-pattern); color: var(--text-main);} .dbh1-algebra-theory .container {max-width: 900px; margin: 0 auto;} .dbh1-algebra-theory .page-header {display: flex; align-items: flex-start; gap: 2rem; margin-bottom: 3rem;} .dbh1-algebra-theory .back-button {display: flex; align-items: center; gap: .5rem; padding: .75rem 1.25rem; border-radius: 12px; color: var(--text-main); text-decoration: none; font-weight: 500; transition: all .3s ease; white-space: nowrap;} .dbh1-algebra-theory .back-button:hover {background: rgba(255,255,255,.1); transform: translateX(-4px); border-color: var(--accent-primary); box-shadow: 0 0 15px rgba(230,0,126,.3);} .dbh1-algebra-theory .title-container {flex: 1; padding: 2rem; border-radius: 16px; text-align: center; position: relative; overflow: hidden;} .dbh1-algebra-theory .title-container::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,var(--accent-primary),var(--accent-secondary),var(--accent-tertiary));} .dbh1-algebra-theory .title-container h1 {font-size: 2.5rem; margin-bottom: .5rem; background: linear-gradient(135deg,#fff,var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-shadow: 0 0 30px rgba(0,240,255,.2);} .dbh1-algebra-theory .subtitle {font-size: 1.1rem; color: var(--text-muted);} .dbh1-algebra-theory .theory-accordion {display: flex; flex-direction: column; gap: 1.5rem;} .dbh1-algebra-theory .accordion-item {border-radius: 16px; overflow: hidden; transition: all .3s ease; border: 1px solid rgba(255,255,255,.1);} .dbh1-algebra-theory .accordion-item:hover {border-color: rgba(0,240,255,.3); box-shadow: 0 5px 20px rgba(0,240,255,.1);} .dbh1-algebra-theory .accordion-item.expanded {border-color: var(--accent-primary); box-shadow: 0 5px 25px rgba(230,0,126,.15);} .dbh1-algebra-theory .accordion-header {width: 100%; padding: 1.5rem 2rem; display: flex; justify-content: space-between; align-items: center; background: transparent; border: none; color: var(--text-main); cursor: pointer; text-align: left;} .dbh1-algebra-theory .header-content {display: flex; align-items: center; gap: 1rem;} .dbh1-algebra-theory .icon-container {padding: .75rem; background: rgba(255,255,255,.05); border-radius: 12px; color: var(--accent-secondary); box-shadow: inset 0 0 10px rgba(0,0,0,.5);} .dbh1-algebra-theory .accordion-header h2 {font-size: 1.25rem; font-weight: 600; margin: 0; text-shadow: 0 2px 4px rgba(0,0,0,.5);} .dbh1-algebra-theory .chevron-icon {width: 1.5rem; height: 1.5rem; transition: transform .3s cubic-bezier(.4,0,.2,1); color: var(--text-muted);} .dbh1-algebra-theory .accordion-item.expanded .chevron-icon {transform: rotate(180deg); color: var(--accent-primary);} .dbh1-algebra-theory .accordion-body {display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s cubic-bezier(.4,0,.2,1);} .dbh1-algebra-theory .accordion-item.expanded .accordion-body {grid-template-rows: 1fr;} .dbh1-algebra-theory .accordion-content {overflow: hidden; padding: 0 2rem; opacity: 0; transition: opacity .3s ease; transition-delay: .1s;} .dbh1-algebra-theory .accordion-item.expanded .accordion-content {padding: 0 2rem 2rem; opacity: 1;} .dbh1-algebra-theory .theory-content {display: flex; flex-direction: column; gap: 1.5rem; color: var(--text-muted); line-height: 1.7;} .dbh1-algebra-theory .theory-content h3 {color: var(--text-main); font-size: 1.2rem; margin-top: 1rem; margin-bottom: .5rem; border-bottom: 1px solid rgba(255,255,255,.1); padding-bottom: .5rem;} .dbh1-algebra-theory .theory-content p {margin: 0;} .dbh1-algebra-theory .concept-box,.dbh1-algebra-theory .example-box {padding: 1.5rem; border-radius: 12px; background: rgba(255,255,255,.03); border-left: 4px solid var(--accent-secondary);} .dbh1-algebra-theory .example-box {border-left-color: var(--accent-tertiary); font-style: italic;} .dbh1-algebra-theory .concept-box.highlight {border-left-color: var(--accent-primary); background: rgba(230,0,126,.05);} .dbh1-algebra-theory .concept-box h4 {color: var(--text-main); margin-top: 0; margin-bottom: 1rem;} .dbh1-algebra-theory .concept-box ul {margin: 0; padding-left: 1.5rem;} .dbh1-algebra-theory .concept-box li {margin-bottom: .5rem;} .dbh1-algebra-theory .concept-box li:last-child {margin-bottom: 0;} .dbh1-algebra-theory .steps-container {display: flex; flex-direction: column; gap: 1rem;} .dbh1-algebra-theory .step-card,.dbh1-algebra-theory .rule-card {padding: 1.5rem; border-radius: 12px; background: rgba(255,255,255,.02);} .dbh1-algebra-theory .step-card h4,.dbh1-algebra-theory .rule-card h4 {color: var(--accent-secondary); margin-top: 0; margin-bottom: .5rem;} .dbh1-algebra-theory .math-display {margin-top: 1rem; padding: 1rem; background: rgba(0,0,0,.2); border-radius: 8px; font-family: monospace; font-size: 1.1rem; text-align: center; color: var(--accent-primary); border: 1px solid rgba(230,0,126,.1);} .dbh1-algebra-theory .rules-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 1.5rem;} @media (max-width: 768px) {.dbh1-algebra-theory .page-header {flex-direction: column; align-items: stretch; gap: 1rem;} .dbh1-algebra-theory .back-button {align-self: flex-start;} .dbh1-algebra-theory .accordion-header {padding: 1.25rem 1.5rem;} .dbh1-algebra-theory .accordion-item.expanded .accordion-content {padding: 0 1.5rem 1.5rem;}}.dbh1-algebra-lab {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-main); background-image: var(--bg-pattern); color: var(--text-main);} .dbh1-algebra-lab .container {max-width: 800px; margin: 0 auto;} .dbh1-algebra-lab .page-header {display: flex; align-items: flex-start; gap: 2rem; margin-bottom: 3rem;} .dbh1-algebra-lab .back-button {display: flex; align-items: center; gap: .5rem; padding: .75rem 1.25rem; border-radius: 12px; color: var(--text-main); text-decoration: none; font-weight: 500; transition: all .3s ease; white-space: nowrap;} .dbh1-algebra-lab .back-button:hover {background: rgba(255,255,255,.1); transform: translateX(-4px); border-color: var(--accent-primary); box-shadow: 0 0 15px rgba(230,0,126,.3);} .dbh1-algebra-lab .title-container {flex: 1; padding: 2rem; border-radius: 16px; text-align: center; position: relative; overflow: hidden;} .dbh1-algebra-lab .title-container::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,var(--accent-primary),var(--accent-secondary),var(--accent-tertiary));} .dbh1-algebra-lab .title-container h1 {font-size: 2.5rem; margin-bottom: .5rem; background: linear-gradient(135deg,#fff,var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-shadow: 0 0 30px rgba(0,240,255,.2);} .dbh1-algebra-lab .subtitle {font-size: 1.1rem; color: var(--text-muted);} .dbh1-algebra-lab .lab-content {display: flex; flex-direction: column; gap: 2rem; align-items: center;} .dbh1-algebra-lab .streak-indicator {display: inline-flex; align-items: center; gap: .75rem; padding: .75rem 1.5rem; border-radius: 50px; background: rgba(255,165,0,.1); border: 1px solid rgba(255,165,0,.3); box-shadow: 0 0 20px rgba(255,165,0,.2);} .dbh1-algebra-lab .streak-icon {font-size: 1.5rem;} .dbh1-algebra-lab .streak-count {font-size: 1.5rem; font-weight: 800; color: #FFA500; text-shadow: 0 0 10px rgba(255,165,0,.5);} .dbh1-algebra-lab .streak-label {color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; font-size: .9rem;} .dbh1-algebra-lab .lab-tool-card {width: 100%; padding: 2.5rem; border-radius: 16px; position: relative; overflow: hidden;} .dbh1-algebra-lab .tool-header {display: flex; justify-content: space-between; align-items: center; margin-bottom: 2.5rem; border-bottom: 1px solid rgba(255,255,255,.1); padding-bottom: 1rem;} .dbh1-algebra-lab .tool-header h3 {font-size: 1.5rem; color: var(--accent-secondary); margin: 0;} .dbh1-algebra-lab .btn-icon {background: transparent; border: 1px solid rgba(255,255,255,.2); color: var(--text-main); padding: .5rem; border-radius: 8px; cursor: pointer; transition: all .3s ease; display: flex; align-items: center; justify-content: center;} .dbh1-algebra-lab .btn-icon:hover {background: rgba(0,240,255,.1); border-color: var(--accent-secondary); color: var(--accent-secondary); transform: rotate(15deg);} .dbh1-algebra-lab .equation-play-area {display: flex; flex-direction: column; align-items: center; gap: 2rem;} .dbh1-algebra-lab .equation-display {font-size: 3rem; font-family: monospace; font-weight: 700; color: #fff; text-shadow: 0 0 20px rgba(0,240,255,.5); letter-spacing: 2px; background: rgba(0,0,0,.3); padding: 1rem 3rem; border-radius: 12px; border: 1px solid rgba(0,240,255,.2); box-shadow: inset 0 0 20px rgba(0,0,0,.5);} .dbh1-algebra-lab .input-area {display: flex; align-items: center; gap: 1rem; font-size: 2rem; font-family: monospace;} .dbh1-algebra-lab .x-label {color: var(--accent-tertiary); font-weight: 700; text-shadow: 0 0 10px rgba(189,0,255,.4);} .dbh1-algebra-lab .answer-input {background: rgba(0,0,0,.5); border: 2px solid rgba(255,255,255,.2); color: #fff; font-size: 2rem; font-family: monospace; padding: .5rem 1rem; border-radius: 8px; width: 120px; text-align: center; transition: all .3s ease; outline: none;} .dbh1-algebra-lab .answer-input:focus {border-color: var(--accent-secondary); box-shadow: 0 0 15px rgba(0,240,255,.3);} .dbh1-algebra-lab .answer-input.success {border-color: var(--quiz-feedback-correct-border); box-shadow: 0 0 15px var(--quiz-feedback-correct-border); color: var(--quiz-feedback-correct-text);} .dbh1-algebra-lab .answer-input.error {border-color: var(--quiz-feedback-incorrect-border); box-shadow: 0 0 15px var(--quiz-feedback-incorrect-border); color: var(--quiz-feedback-incorrect-text); animation: shake .5s cubic-bezier(.36,.07,.19,.97) both;} @keyframes shake {10%,90% {transform: translate3d(-1px,0,0);} 20%,80% {transform: translate3d(2px,0,0);} 30%,50%,70% {transform: translate3d(-4px,0,0);} 40%,60% {transform: translate3d(4px,0,0);}} .dbh1-algebra-lab .action-buttons {display: flex; gap: 1rem; width: 100%; justify-content: center; margin-top: 1rem;} .dbh1-algebra-lab .btn-primary,.dbh1-algebra-lab .btn-secondary {padding: 1rem 2rem; border-radius: 8px; font-weight: 600; font-size: 1.1rem; cursor: pointer; transition: all .3s ease; display: inline-flex; align-items: center; justify-content: center; gap: .5rem;} .dbh1-algebra-lab .btn-primary {background: rgba(230,0,126,.2); border: 1px solid var(--accent-primary); color: #fff; text-shadow: 0 0 5px rgba(230,0,126,.5);} .dbh1-algebra-lab .btn-primary:hover:not(:disabled) {background: var(--accent-primary); box-shadow: 0 0 20px rgba(230,0,126,.4);} .dbh1-algebra-lab .btn-primary:disabled {opacity: .5; cursor: not-allowed;} .dbh1-algebra-lab .btn-secondary {background: transparent; border: 1px solid rgba(255,255,255,.2); color: var(--text-muted);} .dbh1-algebra-lab .btn-secondary:hover:not(:disabled) {background: rgba(255,255,255,.05); color: var(--text-main); border-color: rgba(255,255,255,.4);} .dbh1-algebra-lab .btn-secondary:disabled {opacity: .5; cursor: not-allowed;} .dbh1-algebra-lab .feedback-message {margin-top: 2rem; padding: 1rem 2rem; border-radius: 12px; display: flex; align-items: center; justify-content: center; gap: 1rem; font-size: 1.2rem; font-weight: 600; animation: fadeIn .3s ease-out;} .dbh1-algebra-lab .glass-success {background: rgba(0,255,136,.1); border: 1px solid rgba(0,255,136,.3); color: #00ff88; box-shadow: 0 0 20px rgba(0,255,136,.15);} .dbh1-algebra-lab .glass-error {background: rgba(255,51,102,.1); border: 1px solid rgba(255,51,102,.3); color: #ff3366; box-shadow: 0 0 20px rgba(255,51,102,.15);} @keyframes fadeIn {from {opacity: 0; transform: translateY(-10px);} to {opacity: 1; transform: translateY(0);}} .dbh1-algebra-lab .solution-box {margin-top: 2rem; padding: 2rem; border-radius: 12px; background: rgba(255,255,255,.03); border-left: 4px solid var(--accent-tertiary); animation: slideDown .4s cubic-bezier(.175,.885,.32,1.275);} @keyframes slideDown {from {opacity: 0; transform: translateY(-20px);} to {opacity: 1; transform: translateY(0);}} .dbh1-algebra-lab .solution-box h4 {color: var(--accent-tertiary); margin-top: 0; margin-bottom: 1.5rem; font-size: 1.2rem;} .dbh1-algebra-lab .solution-steps {display: flex; flex-direction: column; gap: 1rem; font-family: monospace; font-size: 1.1rem; background: rgba(0,0,0,.3); padding: 1.5rem; border-radius: 8px;} .dbh1-algebra-lab .solution-steps p {margin: 0; color: var(--text-muted);} .dbh1-algebra-lab .solution-steps p.final-answer {color: var(--text-main); font-size: 1.3rem; margin-top: .5rem; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.1);} .dbh1-algebra-lab .mt-4 {margin-top: 1.5rem;} .dbh1-algebra-lab .w-full {width: 100%;} @media (max-width: 768px) {.dbh1-algebra-lab .page-header {flex-direction: column; align-items: stretch; gap: 1rem;} .dbh1-algebra-lab .equation-display {font-size: 2rem; padding: 1rem 1.5rem;} .dbh1-algebra-lab .input-area {font-size: 1.5rem;} .dbh1-algebra-lab .answer-input {width: 90px; font-size: 1.5rem;} .dbh1-algebra-lab .action-buttons {flex-direction: column;}}.dbh1-geometria-home {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-main); background-image: var(--bg-pattern); color: var(--text-main); --accent-primary: #00d2ff; --accent-secondary: #00ff88; --accent-tertiary: #10b981;} .dbh1-geometria-home .container {max-width: 1200px; margin: 0 auto;} .dbh1-geometria-home .page-header {display: flex; align-items: flex-start; gap: 2rem; margin-bottom: 4rem;} .dbh1-geometria-home .back-button {display: flex; align-items: center; gap: .5rem; padding: .75rem 1.25rem; border-radius: 12px; color: var(--text-main); text-decoration: none; font-weight: 500; transition: all .3s ease; white-space: nowrap;} .dbh1-geometria-home .back-button:hover {background: rgba(255,255,255,.1); transform: translateX(-4px); border-color: var(--accent-primary); box-shadow: 0 0 15px rgba(0,210,255,.3);} .dbh1-geometria-home .title-container {flex: 1; padding: 3rem; border-radius: 20px; text-align: center; position: relative; overflow: hidden;} .dbh1-geometria-home .title-container::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,var(--accent-primary),var(--accent-secondary),var(--accent-tertiary));} .dbh1-geometria-home .title-container h1 {font-size: 3.5rem; margin-bottom: 1rem; background: linear-gradient(135deg,#fff,var(--accent-secondary)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-shadow: 0 0 30px rgba(0,255,136,.2);} .dbh1-geometria-home .subtitle {font-size: 1.2rem; color: var(--text-muted); max-width: 600px; margin: 0 auto;} .dbh1-geometria-home .features-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); gap: 2rem; padding: 1rem;} .dbh1-geometria-home .feature-card {padding: 2.5rem; border-radius: 20px; transition: all .4s cubic-bezier(.175,.885,.32,1.275); display: flex; flex-direction: column; position: relative; overflow: hidden; border-top: 1px solid rgba(255,255,255,.1); border-left: 1px solid rgba(255,255,255,.1);} .dbh1-geometria-home .feature-card:hover {transform: translateY(-10px) scale(1.02); border-color: rgba(0,255,136,.3); box-shadow: 0 20px 40px rgba(0,0,0,.4),inset 0 0 0 1px rgba(0,255,136,.2),0 0 30px rgba(0,255,136,.1);} .dbh1-geometria-home .feature-card::after {content: ""; position: absolute; top: 0; right: 0; width: 150px; height: 150px; background: radial-gradient(circle,rgba(0,255,136,.1) 0%,transparent 70%); border-radius: 50%; transform: translate(30%,-30%); transition: all .4s ease;} .dbh1-geometria-home .feature-card:hover::after {transform: translate(20%,-20%) scale(1.2); background: radial-gradient(circle,rgba(0,255,136,.15) 0%,transparent 70%);} .dbh1-geometria-home .feature-icon {font-size: 3.5rem; margin-bottom: 1.5rem; display: inline-block; background: linear-gradient(135deg,var(--accent-primary),var(--accent-secondary)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; filter: drop-shadow(0 0 15px rgba(0,255,136,.3)); transition: transform .4s ease;} .dbh1-geometria-home .feature-card:hover .feature-icon {transform: scale(1.1) rotate(-5deg);} .dbh1-geometria-home .feature-card h3 {font-size: 1.8rem; margin-bottom: 1rem; color: #fff; letter-spacing: -.5px;} .dbh1-geometria-home .feature-card p {color: var(--text-muted); line-height: 1.6; margin-bottom: 2rem; flex-grow: 1; font-size: 1.1rem;} .dbh1-geometria-home .feature-link {display: inline-flex; align-items: center; gap: .5rem; color: var(--accent-secondary); text-decoration: none; font-weight: 600; font-size: 1.1rem; transition: all .3s ease; margin-top: auto; padding: .75rem 1.5rem; background: rgba(0,255,136,.1); border-radius: 8px; border: 1px solid rgba(0,255,136,.2); width: fit-content;} .dbh1-geometria-home .feature-card:hover .feature-link {background: var(--accent-secondary); color: #000; box-shadow: 0 0 20px rgba(0,255,136,.4);} @media (max-width: 768px) {.dbh1-geometria-home .page-header {flex-direction: column; align-items: stretch; gap: 1.5rem;} .dbh1-geometria-home .title-container h1 {font-size: 2.5rem;}}.dbh1-geometria-theory {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-main); background-image: var(--bg-pattern); color: var(--text-main); --accent-primary: #00d2ff; --accent-secondary: #00ff88; --accent-tertiary: #10b981;} .dbh1-geometria-theory .container {max-width: 900px; margin: 0 auto;} .dbh1-geometria-theory .page-header {display: flex; align-items: flex-start; gap: 2rem; margin-bottom: 3rem;} .dbh1-geometria-theory .back-button {display: flex; align-items: center; gap: .5rem; padding: .75rem 1.25rem; border-radius: 12px; color: var(--text-main); text-decoration: none; font-weight: 500; transition: all .3s ease; white-space: nowrap;} .dbh1-geometria-theory .back-button:hover {background: rgba(255,255,255,.1); transform: translateX(-4px); border-color: var(--accent-primary); box-shadow: 0 0 15px rgba(0,210,255,.3);} .dbh1-geometria-theory .title-container {flex: 1; padding: 2rem; border-radius: 16px; text-align: center; position: relative; overflow: hidden;} .dbh1-geometria-theory .title-container::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,var(--accent-primary),var(--accent-secondary),var(--accent-tertiary));} .dbh1-geometria-theory .title-container h1 {font-size: 2.5rem; margin-bottom: .5rem; background: linear-gradient(135deg,#fff,var(--accent-secondary)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-shadow: 0 0 30px rgba(0,255,136,.2);} .dbh1-geometria-theory .subtitle {font-size: 1.1rem; color: var(--text-muted);} .dbh1-geometria-theory .accordion {display: flex; flex-direction: column; gap: 1.5rem;} .dbh1-geometria-theory .accordion-item {border-radius: 16px; overflow: hidden; transition: all .3s ease; border: 1px solid rgba(255,255,255,.1);} .dbh1-geometria-theory .accordion-item.active {border-color: rgba(0,255,136,.3); box-shadow: 0 10px 30px rgba(0,0,0,.3),0 0 20px rgba(0,255,136,.1);} .dbh1-geometria-theory .accordion-header {width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 1.5rem 2rem; background: transparent; border: none; color: #fff; cursor: pointer; transition: all .3s ease;} .dbh1-geometria-theory .accordion-header:hover {background: rgba(255,255,255,.05);} .dbh1-geometria-theory .accordion-header h3 {font-size: 1.5rem; margin: 0; font-weight: 600; letter-spacing: -.5px;} .dbh1-geometria-theory .accordion-collapse {transition: all .4s cubic-bezier(.4,0,.2,1); overflow: hidden;} .dbh1-geometria-theory .accordion-body {padding: 0 2rem 2rem;} .dbh1-geometria-theory .theory-section-content h4 {color: var(--accent-primary); font-size: 1.3rem; margin: 1.5rem 0 1rem; font-weight: 600;} .dbh1-geometria-theory .theory-section-content p {color: var(--text-muted); line-height: 1.7; font-size: 1.1rem; margin-bottom: 1.5rem;} .dbh1-geometria-theory .table-responsive {width: 100%; overflow-x: auto; border-radius: 12px; margin-bottom: 2rem; background: rgba(0,0,0,.2); border: 1px solid rgba(255,255,255,.05);} .dbh1-geometria-theory .geometria-table {width: 100%; border-collapse: collapse; text-align: left;} .dbh1-geometria-theory .geometria-table th,.dbh1-geometria-theory .geometria-table td {padding: 1rem 1.5rem; border-bottom: 1px solid rgba(255,255,255,.1);} .dbh1-geometria-theory .geometria-table th {background: rgba(255,255,255,.05); color: var(--accent-secondary); font-weight: 600; font-size: 1.1rem;} .dbh1-geometria-theory .geometria-table tr:last-child td {border-bottom: none;} .dbh1-geometria-theory .geometria-table td strong {color: #fff; font-weight: 600;} .dbh1-geometria-theory .geometria-table td.formula-cell {font-family: monospace; color: var(--accent-primary); font-size: 1.1rem; letter-spacing: .5px;} .dbh1-geometria-theory .formula-box {padding: 2rem; border-radius: 12px; text-align: center; margin: 2rem 0; border: 1px solid rgba(0,210,255,.3); background: linear-gradient(135deg,rgba(0,210,255,.05),transparent);} .dbh1-geometria-theory .formula {font-size: 3rem; font-family: monospace; font-weight: 700; color: #fff; text-shadow: 0 0 20px rgba(0,210,255,.5); margin-bottom: 1rem; letter-spacing: 2px;} .dbh1-geometria-theory .formula-legend {color: var(--accent-secondary) !important; font-style: italic; margin: 0 !important;} .mt-4 {margin-top: 1.5rem;} @media (max-width: 768px) {.dbh1-geometria-theory .page-header {flex-direction: column; align-items: stretch; gap: 1.5rem;} .dbh1-geometria-theory .accordion-header {padding: 1.25rem 1.5rem;} .dbh1-geometria-theory .accordion-body {padding: 0 1.5rem 1.5rem;} .dbh1-geometria-theory .geometria-table th,.dbh1-geometria-theory .geometria-table td {padding: .75rem 1rem;}}.dbh1-geometria-lab {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-main); background-image: var(--bg-pattern); color: var(--text-main); --accent-primary: #00d2ff; --accent-secondary: #00ff88; --accent-tertiary: #10b981;} .dbh1-geometria-lab .container {max-width: 800px; margin: 0 auto;} .dbh1-geometria-lab .page-header {display: flex; align-items: flex-start; gap: 2rem; margin-bottom: 3rem;} .dbh1-geometria-lab .back-button {display: flex; align-items: center; gap: .5rem; padding: .75rem 1.25rem; border-radius: 12px; color: var(--text-main); text-decoration: none; font-weight: 500; transition: all .3s ease; white-space: nowrap;} .dbh1-geometria-lab .back-button:hover {background: rgba(255,255,255,.1); transform: translateX(-4px); border-color: var(--accent-primary); box-shadow: 0 0 15px rgba(0,210,255,.3);} .dbh1-geometria-lab .title-container {flex: 1; padding: 2rem; border-radius: 16px; text-align: center; position: relative; overflow: hidden;} .dbh1-geometria-lab .title-container::before {content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg,var(--accent-primary),var(--accent-secondary),var(--accent-tertiary));} .dbh1-geometria-lab .title-container h1 {font-size: 2.5rem; margin-bottom: .5rem; background: linear-gradient(135deg,#fff,var(--accent-secondary)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-shadow: 0 0 30px rgba(0,255,136,.2);} .dbh1-geometria-lab .subtitle {font-size: 1.1rem; color: var(--text-muted);} .dbh1-geometria-lab .lab-content {display: flex; flex-direction: column; gap: 2rem; align-items: center;} .dbh1-geometria-lab .streak-indicator {display: inline-flex; align-items: center; gap: .75rem; padding: .75rem 1.5rem; border-radius: 50px; background: rgba(255,165,0,.1); border: 1px solid rgba(255,165,0,.3); box-shadow: 0 0 20px rgba(255,165,0,.2);} .dbh1-geometria-lab .streak-icon {font-size: 1.5rem;} .dbh1-geometria-lab .streak-count {font-size: 1.5rem; font-weight: 800; color: #FFA500; text-shadow: 0 0 10px rgba(255,165,0,.5);} .dbh1-geometria-lab .streak-label {color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; font-size: .9rem;} .dbh1-geometria-lab .lab-tool-card {width: 100%; padding: 2.5rem; border-radius: 16px; position: relative; overflow: hidden;} .dbh1-geometria-lab .tool-header {display: flex; justify-content: space-between; align-items: center; margin-bottom: 2.5rem; border-bottom: 1px solid rgba(255,255,255,.1); padding-bottom: 1rem;} .dbh1-geometria-lab .tool-header h3 {font-size: 1.5rem; color: var(--accent-secondary); margin: 0;} .dbh1-geometria-lab .btn-icon {background: transparent; border: 1px solid rgba(255,255,255,.2); color: var(--text-main); padding: .5rem; border-radius: 8px; cursor: pointer; transition: all .3s ease; display: flex; align-items: center; justify-content: center;} .dbh1-geometria-lab .btn-icon:hover {background: rgba(0,210,255,.1); border-color: var(--accent-secondary); color: var(--accent-secondary); transform: rotate(15deg);} .dbh1-geometria-lab .problem-play-area {display: flex; flex-direction: column; align-items: center; gap: 2rem;} .dbh1-geometria-lab .shape-visualization {display: flex; flex-direction: column; align-items: center; gap: 1.5rem; padding: 2rem; border-radius: 16px; background: rgba(0,0,0,.3); width: 100%; max-width: 400px; border: 1px solid rgba(0,210,255,.2);} .dbh1-geometria-lab .shape-icon {background: linear-gradient(135deg,var(--accent-primary),var(--accent-secondary)); box-shadow: 0 0 20px rgba(0,255,136,.3);} .dbh1-geometria-lab .shape-icon.square {width: 100px; height: 100px;} .dbh1-geometria-lab .shape-icon.rectangle {width: 140px; height: 80px;} .dbh1-geometria-lab .shape-icon.triangle {width: 0; height: 0; background: transparent; border-left: 60px solid transparent; border-right: 60px solid transparent; border-bottom: 100px solid var(--accent-secondary); box-shadow: none; filter: drop-shadow(0 0 15px rgba(0,255,136,.3));} .dbh1-geometria-lab .shape-icon.circle {width: 100px; height: 100px; border-radius: 50%;} .dbh1-geometria-lab .dimensions-labels {display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center;} .dbh1-geometria-lab .dimensions-labels span {font-family: monospace; font-size: 1.2rem; font-weight: 600; color: #fff; background: rgba(255,255,255,.1); padding: .25rem .75rem; border-radius: 6px;} .dbh1-geometria-lab .problem-instruction {font-size: 1.2rem; color: var(--text-muted); text-align: center;} .dbh1-geometria-lab .input-area {display: flex; align-items: center; gap: 1rem; font-size: 2rem; font-family: monospace;} .dbh1-geometria-lab .area-label {color: var(--accent-tertiary); font-weight: 700; text-shadow: 0 0 10px rgba(16,185,129,.4);} .dbh1-geometria-lab .unit-label {color: var(--text-muted);} .dbh1-geometria-lab .answer-input {background: rgba(0,0,0,.5); border: 2px solid rgba(255,255,255,.2); color: #fff; font-size: 2rem; font-family: monospace; padding: .5rem 1rem; border-radius: 8px; width: 140px; text-align: center; transition: all .3s ease; outline: none;} .dbh1-geometria-lab .answer-input:focus {border-color: var(--accent-secondary); box-shadow: 0 0 15px rgba(0,255,136,.3);} .dbh1-geometria-lab .answer-input.success {border-color: var(--quiz-feedback-correct-border); box-shadow: 0 0 15px var(--quiz-feedback-correct-border); color: var(--quiz-feedback-correct-text);} .dbh1-geometria-lab .answer-input.error {border-color: var(--quiz-feedback-incorrect-border); box-shadow: 0 0 15px var(--quiz-feedback-incorrect-border); color: var(--quiz-feedback-incorrect-text);} .dbh1-geometria-lab .action-buttons {display: flex; gap: 1rem; width: 100%; max-width: 400px;} .dbh1-geometria-lab .btn-primary,.dbh1-geometria-lab .btn-secondary {flex: 1; padding: .75rem 1.5rem; border-radius: 8px; font-weight: 600; cursor: pointer; transition: all .3s ease; display: inline-flex; align-items: center; justify-content: center; gap: .5rem;} .dbh1-geometria-lab .btn-primary {background: var(--accent-secondary); color: #000; border: none;} .dbh1-geometria-lab .btn-primary:hover:not(:disabled) {transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,255,136,.4);} .dbh1-geometria-lab .btn-primary:disabled {opacity: .5; cursor: not-allowed; transform: none; box-shadow: none;} .dbh1-geometria-lab .btn-secondary {background: transparent; color: var(--text-main); border: 1px solid rgba(255,255,255,.2);} .dbh1-geometria-lab .btn-secondary:hover:not(:disabled) {background: rgba(255,255,255,.1); border-color: var(--accent-primary);} .dbh1-geometria-lab .btn-secondary:disabled {opacity: .5; cursor: not-allowed;} .dbh1-geometria-lab .feedback-message {display: flex; align-items: center; gap: .75rem; padding: 1rem 1.5rem; border-radius: 12px; width: 100%; margin-top: 1rem;} .dbh1-geometria-lab .feedback-message span {font-weight: 500;} .dbh1-geometria-lab .glass-success {background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.3); color: #10b981;} .dbh1-geometria-lab .glass-error {background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.3); color: #ef4444;} .dbh1-geometria-lab .solution-box {margin-top: 2rem; padding: 1.5rem; background: rgba(0,210,255,.05); border: 1px solid rgba(0,210,255,.2); border-radius: 12px;} .dbh1-geometria-lab .solution-box h4 {color: var(--accent-primary); margin-bottom: 1rem; font-size: 1.2rem;} .dbh1-geometria-lab .solution-steps p {margin-bottom: .5rem; color: var(--text-muted); font-family: monospace; font-size: 1.1rem;} .mt-4 {margin-top: 1.5rem;} .w-full {width: 100%;} @media (max-width: 768px) {.dbh1-geometria-lab .page-header {flex-direction: column; align-items: stretch; gap: 1.5rem;} .dbh1-geometria-lab .title-container h1 {font-size: 2rem;}}.dbh1-taulak-grafikoak-home {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-primary); position: relative; overflow: hidden;} .dbh1-taulak-grafikoak-home::before {content: ""; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle at center,rgba(37,99,235,.1) 0%,transparent 50%); animation: pulse 15s ease-in-out infinite alternate; z-index: 0;} .container {max-width: 1200px; margin: 0 auto; position: relative; z-index: 1;} .page-header {display: flex; flex-direction: column; gap: 1rem; margin-bottom: 3rem; animation: slideDown .5s ease-out;} .back-button {display: inline-flex; align-items: center; gap: .5rem; padding: .75rem 1.5rem; border-radius: 9999px; color: var(--text-primary); text-decoration: none; font-weight: 500; align-self: flex-start; transition: all .3s ease; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);} .back-button:hover {background: rgba(255,255,255,.1); transform: translateX(-5px);} .title-container {padding: 2rem; border-radius: 20px; text-align: center; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.05); box-shadow: 0 8px 32px rgba(0,0,0,.2); backdrop-filter: blur(10px);} .title-container h1 {font-size: 3rem; margin: 0 0 .5rem 0; background: linear-gradient(135deg,#10b981,#3b82f6); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;} .subtitle {font-size: 1.25rem; color: var(--text-secondary); margin: 0;} .hero-content {text-align: center; padding: 2rem; border-radius: 20px; margin-bottom: 3rem; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.05);} .description {font-size: 1.1rem; color: var(--text-primary); max-width: 800px; margin: 0 auto; line-height: 1.6;} .features-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); gap: 2rem; animation: slideUp .5s ease-out .2s backwards;} .feature-card {padding: 2rem; border-radius: 20px; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 1rem; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.05); transition: all .3s ease;} .feature-card:hover {transform: translateY(-5px); background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.1); box-shadow: 0 10px 40px rgba(0,0,0,.2);} .feature-icon {font-size: 3rem; margin-bottom: .5rem;} .feature-card h3 {font-size: 1.5rem; margin: 0; color: var(--text-primary);} .feature-card p {color: var(--text-secondary); line-height: 1.6; flex-grow: 1;} .feature-link {display: inline-block; padding: .75rem 2rem; border-radius: 9999px; background: rgba(59,130,246,.1); color: #60a5fa; text-decoration: none; font-weight: 500; transition: all .3s ease; border: 1px solid rgba(59,130,246,.2); margin-top: 1rem;} .feature-card:hover .feature-link {background: #3b82f6; color: white;} @keyframes slideDown {from {opacity: 0; transform: translateY(-20px);} to {opacity: 1; transform: translateY(0);}} @keyframes slideUp {from {opacity: 0; transform: translateY(20px);} to {opacity: 1; transform: translateY(0);}} @keyframes pulse {0% {transform: scale(1) rotate(0deg);} 100% {transform: scale(1.1) rotate(5deg);}} @media (max-width: 768px) {.title-container h1 {font-size: 2rem;} .subtitle {font-size: 1rem;} .features-grid {grid-template-columns: 1fr;}}.theory-page-container {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-primary);} .page-title {font-size: 2.5rem; margin-bottom: 2rem; color: var(--text-primary); display: flex; align-items: center; justify-content: center; gap: 1rem; text-shadow: 0 0 20px rgba(59,130,246,.5);} .title-icon {font-size: 2.5rem; filter: drop-shadow(0 0 10px rgba(255,255,255,.3));} .theory-content-container {max-width: 900px; margin: 0 auto; padding: 2.5rem; border-radius: 24px; background: rgba(20,25,40,.6); border: 1px solid rgba(255,255,255,.1); box-shadow: 0 10px 40px rgba(0,0,0,.3),inset 0 0 0 1px rgba(255,255,255,.05); backdrop-filter: blur(16px);} .theory-header h2 {font-size: 2rem; margin-bottom: .5rem; color: #fff; background: linear-gradient(135deg,#60a5fa,#a78bfa); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;} .theory-description {font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 2rem;} .theory-sections {display: flex; flex-direction: column; gap: 1.25rem;} .theory-section {border-radius: 16px; transition: all .3s ease; overflow: hidden; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.05);} .theory-section.open {background: rgba(255,255,255,.05); border-color: rgba(96,165,250,.3); box-shadow: 0 8px 32px rgba(0,0,0,.2);} .section-header {width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 1.25rem 1.5rem; background: transparent; border: none; cursor: pointer; color: var(--text-primary); transition: all .2s;} .section-header:hover {background: rgba(255,255,255,.05);} .section-title-wrap {display: flex; align-items: center; gap: 1rem;} .section-icon {font-size: 1.5rem; background: rgba(255,255,255,.1); width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 10px; box-shadow: 0 4px 10px rgba(0,0,0,.2);} .section-header h3 {margin: 0; font-size: 1.2rem; font-weight: 600;} .chevron {color: var(--text-secondary); transition: transform .3s ease;} .section-content-wrapper {display: grid; grid-template-rows: 0fr; transition: grid-template-rows .4s cubic-bezier(.4,0,.2,1);} .theory-section.open .section-content-wrapper {grid-template-rows: 1fr;} .section-content {overflow: hidden; padding: 0 1.5rem; opacity: 0; transition: opacity .3s ease;} .theory-section.open .section-content {padding: 0 1.5rem 1.5rem; opacity: 1; transition-delay: .1s;} .intro-text {font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 1.5rem; border-bottom: 1px solid rgba(255,255,255,.1); padding-bottom: 1rem;} .concept-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 1.25rem; margin-top: 1.5rem;} .concept-grid.two-cols {grid-template-columns: repeat(auto-fit,minmax(320px,1fr));} .concept-box {padding: 1.25rem; border-radius: 12px; background: rgba(255,255,255,.05); border-left: 4px solid var(--text-secondary);} .concept-box.box-primary {border-left-color: #3b82f6; background: rgba(59,130,246,.05);} .concept-box.box-success {border-left-color: #10b981; background: rgba(16,185,129,.05);} .concept-box.box-warning {border-left-color: #f59e0b; background: rgba(245,158,11,.05);} .concept-box.box-info {border-left-color: #0ea5e9; background: rgba(14,165,233,.05);} .concept-box.box-purple {border-left-color: #a855f7; background: rgba(168,85,247,.05);} .concept-box h4 {margin: 0 0 .5rem 0; font-size: 1.1rem; color: #e2e8f0;} .concept-box p {margin: 0; color: var(--text-secondary); font-size: .95rem; line-height: 1.5;} .comparison-table-wrapper {overflow-x: auto; border-radius: 12px; border: 1px solid rgba(255,255,255,.1);} .comparison-table {width: 100%; border-collapse: collapse;} .comparison-table th {background: rgba(255,255,255,.05); padding: 1rem; text-align: left; color: var(--text-primary); font-weight: 600; border-bottom: 1px solid rgba(255,255,255,.1);} .comparison-table td {padding: 1.25rem; vertical-align: top; color: var(--text-secondary); line-height: 1.6;} .comparison-table td:not(:last-child) {border-right: 1px solid rgba(255,255,255,.05);} .steps-container {display: flex; flex-direction: column; gap: 1rem; position: relative; padding-left: 1rem;} .steps-container::before {content: ""; position: absolute; left: 2.25rem; top: 1rem; bottom: 1rem; width: 2px; background: rgba(255,255,255,.1); z-index: 0;} .step-item {display: flex; gap: 1.5rem; position: relative; z-index: 1; align-items: flex-start;} .step-number {flex-shrink: 0; width: 2.5rem; height: 2.5rem; border-radius: 50%; background: #1e293b; border: 2px solid #3b82f6; display: flex; align-items: center; justify-content: center; font-weight: bold; color: #60a5fa; box-shadow: 0 0 10px rgba(59,130,246,.3);} .step-content {background: rgba(255,255,255,.03); padding: 1rem; border-radius: 12px; flex-grow: 1;} .step-content h4 {margin: 0 0 .25rem 0; color: #e2e8f0;} .step-content p {margin: 0; color: var(--text-secondary); font-size: .95rem;} .measures-grid {display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 1rem;} .measure-card {display: flex; align-items: center; gap: 1rem; background: rgba(255,255,255,.05); padding: 1rem; border-radius: 12px; border: 1px solid rgba(255,255,255,.05);} .measure-icon {flex-shrink: 0; width: 3rem; height: 3rem; border-radius: 8px; background: linear-gradient(135deg,rgba(59,130,246,.2),rgba(168,85,247,.2)); border: 1px solid rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center; font-weight: 700; color: #fff; font-size: 1.25rem;} .measure-info h4 {margin: 0 0 .25rem 0; color: #e2e8f0; font-size: 1rem;} .measure-info p {margin: 0; color: var(--text-secondary); font-size: .85rem; line-height: 1.4;} .custom-bullet-list {margin: 0; padding-left: 1.25rem;} .custom-bullet-list li {margin-bottom: .5rem;} @media (max-width: 640px) {.theory-content-container {padding: 1.5rem;} .concept-grid {grid-template-columns: 1fr;} .measures-grid {grid-template-columns: 1fr;}}.dbh1-taulak-grafikoak-lab {min-height: 100vh; padding: 2rem 1rem; background: var(--bg-primary); color: var(--text-primary);} .lab-header h1 {font-size: 3rem; margin-bottom: .5rem; background: linear-gradient(135deg,#a78bfa,#3b82f6); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; display: flex; align-items: center; justify-content: center; gap: 1rem;} .lab-subtitle {font-size: 1.25rem; color: var(--text-secondary);} .lab-grid {display: grid; grid-template-columns: 1fr; gap: 2rem; max-width: 1200px; margin: 0 auto;} @media (min-width: 1024px) {.lab-grid {grid-template-columns: 1fr 1fr;}} .lab-module {padding: 2rem; border-radius: 24px; background: rgba(20,25,40,.6); border: 1px solid rgba(255,255,255,.1); box-shadow: 0 8px 32px rgba(0,0,0,.2); display: flex; flex-direction: column; gap: 1.5rem;} .lab-module h3 {margin: 0; font-size: 1.5rem; display: flex; align-items: center; gap: .75rem; color: #e2e8f0;} .inline-icon {color: #60a5fa;} .module-desc {color: var(--text-secondary); margin: 0; font-size: 1rem; line-height: 1.5;} .input-group {display: flex; flex-direction: column; gap: 1rem;} .glass-input,.glass-textarea {width: 100%; padding: 1rem; border-radius: 12px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); color: white; font-family: inherit; font-size: 1rem; transition: all .3s;} .glass-input:focus,.glass-textarea:focus {outline: none; border-color: #3b82f6; background: rgba(255,255,255,.1); box-shadow: 0 0 0 2px rgba(59,130,246,.2);} .table-wrapper {overflow-x: auto; border-radius: 12px; border: 1px solid rgba(255,255,255,.1);} .freq-table {width: 100%; border-collapse: collapse; text-align: center;} .freq-table th {background: rgba(255,255,255,.05); padding: 1rem; font-weight: 600; color: #e2e8f0; border-bottom: 1px solid rgba(255,255,255,.1);} .freq-table td {padding: .75rem; border-bottom: 1px solid rgba(255,255,255,.05); color: var(--text-secondary);} .freq-table .highlight-val {color: #3b82f6; font-weight: 500;} .total-row td {font-weight: bold; color: #e2e8f0; border-top: 1px solid rgba(255,255,255,.1); background: rgba(255,255,255,.02);} .stat-results {display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem;} .stat-card {display: flex; flex-direction: column; align-items: center; padding: 1rem; border-radius: 12px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);} .stat-label {font-size: .9rem; color: var(--text-secondary); margin-bottom: .5rem; text-align: center;} .stat-value {font-size: 1.5rem; font-weight: bold; color: #fff; text-shadow: 0 0 10px rgba(255,255,255,.3);} .stat-card.box-primary {border-bottom: 3px solid #3b82f6;} .stat-card.box-success {border-bottom: 3px solid #10b981;} .stat-card.box-warning {border-bottom: 3px solid #f59e0b;} .stat-card.box-purple {border-bottom: 3px solid #a855f7;} .graphs-container {display: flex; flex-direction: column; gap: 2rem;} .graph-box {background: rgba(0,0,0,.2); padding: 1.5rem; border-radius: 16px;} .bar-chart {display: flex; align-items: flex-end; justify-content: space-around; height: 200px; padding-top: 2rem; border-bottom: 2px solid rgba(255,255,255,.2); border-left: 2px solid rgba(255,255,255,.2);} .bar-wrapper {display: flex; flex-direction: column; align-items: center; width: 20%; height: 100%; justify-content: flex-end; position: relative;} .bar {width: 100%; border-radius: 4px 4px 0 0; transition: height .5s ease;} .bar-value {position: absolute; top: -25px; font-weight: bold; font-size: .9rem;} .bar-label {position: absolute; bottom: -30px; font-size: .85rem; color: var(--text-secondary);} .pie-chart-wrapper {display: flex; flex-direction: column; align-items: center; gap: 1.5rem; margin-top: 1rem;} .pie-chart {width: 150px; height: 150px; border-radius: 50%; box-shadow: 0 0 20px rgba(0,0,0,.5),inset 0 0 20px rgba(255,255,255,.2); transform: rotate(-90deg);} .pie-legend {display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center;} .legend-item {display: flex; align-items: center; gap: .5rem; font-size: .9rem;} .color-dot {width: 12px; height: 12px; border-radius: 50%; display: inline-block;} .classifier-game {display: flex; flex-direction: column; gap: 1.5rem; align-items: center;} .score-display {font-size: 1.2rem; font-weight: 500;} .score-display span {color: #fbbf24; font-size: 1.5rem;} .variable-prompt {background: rgba(255,255,255,.05); padding: 2rem; border-radius: 16px; text-align: center; border: 1px solid rgba(255,255,255,.1); box-shadow: 0 10px 30px rgba(0,0,0,.2); width: 100%;} .variable-prompt h4 {color: var(--text-secondary); margin: 0 0 1rem 0; font-weight: 400;} .variable-text {font-size: 1.5rem; font-weight: 600; color: #e2e8f0; margin: 0;} .classifier-options {display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; width: 100%;} .classifier-btn {padding: 1rem 1.5rem; border: none; border-radius: 12px; font-weight: 600; cursor: pointer; transition: all .2s; color: white; flex: 1; min-width: 140px;} .classifier-btn:hover {transform: translateY(-3px); box-shadow: 0 5px 15px rgba(0,0,0,.3);} .classifier-btn.box-primary {background: #3b82f6;} .classifier-btn.box-success {background: #10b981;} .classifier-btn.box-warning {background: #f59e0b;} .feedback-message {font-size: 1.25rem; font-weight: bold; text-align: center; min-height: 2rem; animation: fadeIn .3s;} @keyframes fadeIn {from {opacity: 0; transform: translateY(-10px);} to {opacity: 1; transform: translateY(0);}}}}}}}}}}}}}}