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#00000040}.resources-btn{background:linear-gradient(135deg,#667eea,#764ba2)}.dragdrop-btn{background:linear-gradient(135deg,#4facfe,#00f2fe)}.simulation-btn{background:linear-gradient(135deg,#43e97b,#38f9d7)}.video-btn{background:linear-gradient(135deg,#fa709a,#fee140)}@media(max-width:768px){.interactive-features{grid-template-columns:repeat(2,1fr);gap:.75rem;padding:.75rem}.feature-btn{font-size:.9rem;padding:.75rem}}@media(max-width:480px){.interactive-features{grid-template-columns:1fr}}.sk-spinner{display:inline-block;border-radius:50%;border:6px solid rgba(0,0,0,.08);border-top-color:#2b6ef6;animation:sk-spin .9s linear infinite}@keyframes sk-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.spinner-center{display:flex;align-items:center;justify-content:center}.achievements{margin:20px 0;padding:16px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:12px;color:#fff}.achievements h3{margin:0 0 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h1{font-size:32px;color:#4a90e2;margin:0;font-weight:700}.back-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:10px 20px;border-radius:20px;cursor:pointer;font-size:14px;font-weight:700;transition:transform .2s,box-shadow .2s}.back-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.back-btn:active{transform:translateY(0)}.subject-grid{background:linear-gradient(135deg,#f5f7fa,#c3cfe2);padding:25px;border-radius:15px;box-shadow:0 4px 15px #0000001a}.subject-grid h2{margin-top:0;color:#333;text-align:center;font-size:24px}.subjects{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:15px}.subject-card{background:#fff;padding:15px;border-radius:10px;box-shadow:0 2px 8px #00000014;transition:transform .2s,box-shadow .2s}.subject-card:hover{transform:translateY(-3px);box-shadow:0 6px 20px #0000001f}.subject-card h3{margin:0 0 12px;color:#4a90e2;font-size:16px;text-align:center}.difficulty-buttons{display:flex;flex-direction:column;gap:8px}.difficulty-btn{padding:8px 12px;border:2px solid transparent;border-radius:8px;cursor:pointer;font-size:12px;font-weight:700;transition:all .2s}.difficulty-btn.easy{background:#7fdb7f;color:#fff;border-color:#5fb35f}.difficulty-btn.easy:hover{background:#5fb35f;transform:scale(1.05)}.difficulty-btn.medium{background:orange;color:#fff;border-color:#ff8c00}.difficulty-btn.medium:hover{background:#ff8c00;transform:scale(1.05)}.difficulty-btn.hard{background:#ff6b6b;color:#fff;border-color:#e64545}.difficulty-btn.hard:hover{background:#e64545;transform:scale(1.05)}.game-info{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-bottom:25px}.info-item{background:#fff;padding:15px;border-radius:10px;text-align:center;box-shadow:0 2px 8px #00000014;font-size:14px}.info-item strong{display:block;color:#4a90e2;font-size:12px;margin-bottom:5px;text-transform:uppercase}.scramble-card{background:#fff;padding:30px;border-radius:15px;box-shadow:0 6px 20px #0000001a;transition:all .3s;border:3px solid transparent}.scramble-card.correct{animation:correctPulse .6s ease-out;background:linear-gradient(135deg,#fff5f5,#f0fff0);border-color:#7fdb7f}.scramble-card.wrong{animation:wrongShake .4s ease-out;background:linear-gradient(135deg,#fff5f5,#ffe0e0);border-color:#ff6b6b}@keyframes correctPulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}@keyframes wrongShake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.scramble-label{font-size:16px;color:#666;margin:0 0 15px;text-align:center}.scrambled-word{font-size:42px;font-weight:700;color:#4a90e2;text-align:center;margin:20px 0;padding:20px;background:linear-gradient(135deg,#e8f4f8,#f0f5fa);border-radius:10px;letter-spacing:4px;font-family:Courier New,monospace;word-break:break-all}.hint-text{background:#fffbea;color:#ff9800;padding:12px;border-radius:8px;margin:15px 0;text-align:center;font-weight:700;border-left:4px solid #ff9800;animation:hintGlow .4s ease-out}@keyframes hintGlow{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}.guess-input{width:100%;padding:15px;font-size:16px;border:2px solid #ddd;border-radius:8px;margin:15px 0;box-sizing:border-box;transition:all .2s;text-transform:uppercase;letter-spacing:1px}.guess-input:focus{outline:none;border-color:#4a90e2;box-shadow:0 0 0 3px #4a90e21a}.button-group{display:flex;gap:10px;margin:20px 0}.button-row{display:flex;gap:10px;margin:10px 0 0}.guess-btn{flex:2;padding:12px 20px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:700;cursor:pointer;transition:all .2s}.guess-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.guess-btn:active{transform:translateY(0)}.hint-btn{flex:1;padding:12px 20px;background:linear-gradient(135deg,orange,#ff8c00);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s}.hint-btn:hover:not(.disabled){transform:translateY(-2px);box-shadow:0 4px 12px #ffa50066}.hint-btn.disabled{opacity:.5;cursor:not-allowed;background:linear-gradient(135deg,#ccc,#999)}.feedback{font-size:20px;font-weight:700;text-align:center;margin:15px 0 0;padding:10px;border-radius:8px}.feedback.correct{color:#7fdb7f;background:#f0fff0}.feedback.wrong{color:#ff6b6b;background:#fff5f5}.voice-btn{padding:10px 14px;background:linear-gradient(135deg,#4a90e2,#357abd);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s}.voice-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #4a90e266}.results-card{background:linear-gradient(135deg,#fff5f5,#f0fff0);padding:40px;border-radius:15px;box-shadow:0 8px 25px #00000026;text-align:center;max-width:400px;margin:0 auto}.results-card h2{font-size:32px;color:#4a90e2;margin:0 0 25px}.results-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:30px}.stat{background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 8px #00000014}.stat-label{display:block;font-size:12px;color:#999;text-transform:uppercase;margin-bottom:8px}.stat-value{display:block;font-size:28px;font-weight:700;color:#4a90e2}.results-buttons{display:flex;flex-direction:column;gap:10px}.play-again-btn{padding:12px 20px;background:linear-gradient(135deg,#7fdb7f,#5fb35f);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:700;cursor:pointer;transition:all .2s}.play-again-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #7fdb7f66}.menu-btn{padding:12px 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#00000080;position:relative;animation:slideUp .4s ease}.resources-close-btn{position:absolute;top:1rem;right:1rem;background:#fff3;border:none;border-radius:50%;width:40px;height:40px;font-size:1.5rem;color:#fff;cursor:pointer;transition:all .3s ease;z-index:10}.resources-close-btn:hover{background:#ffffff4d;transform:rotate(90deg)}.resources-header{text-align:center;margin-bottom:1.5rem;color:#fff}.resources-header h2{font-size:2rem;margin:0 0 .5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.resources-subtitle{font-size:1rem;margin:0;opacity:.9}.resources-filter{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid rgba(255,255,255,.2)}.filter-btn{background:#fff3;border:2px solid rgba(255,255,255,.3);color:#fff;padding:.5rem 1rem;border-radius:20px;cursor:pointer;font-size:.9rem;font-weight:600;transition:all .3s ease}.filter-btn:hover{background:#ffffff4d;transform:translateY(-2px)}.filter-btn.active{background:#fff;color:#667eea;border-color:#fff;box-shadow:0 4px 12px #ffffff4d}.resources-list{display:flex;flex-direction:column;gap:1rem}.resource-card{background:#fffffff2;border-radius:12px;padding:1.25rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;transition:all .3s ease;animation:fadeInUp .4s ease}.resource-card:hover{transform:translateY(-3px);box-shadow:0 8px 20px #0003}.resource-content{flex:1}.resource-card h3{margin:0 0 .5rem;color:#667eea;font-size:1.1rem}.resource-description{margin:0 0 .75rem;color:#555;font-size:.95rem;line-height:1.5}.resource-meta{display:flex;gap:.75rem;flex-wrap:wrap}.resource-category,.resource-age{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.25rem .75rem;border-radius:12px;font-size:.75rem;font-weight:600}.resource-age{background:linear-gradient(135deg,#f093fb,#f5576c)}.resource-link-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;font-weight:700;cursor:pointer;text-decoration:none;display:inline-block;transition:all .3s ease;white-space:nowrap}.resource-link-btn:hover{transform:translate(5px);box-shadow:0 4px 12px #667eea66}.no-resources{text-align:center;padding:2rem;color:#fff;font-size:1.1rem}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.resources-modal::-webkit-scrollbar{width:8px}.resources-modal::-webkit-scrollbar-track{background:#ffffff1a;border-radius:10px}.resources-modal::-webkit-scrollbar-thumb{background:#ffffff4d;border-radius:10px}.resources-modal::-webkit-scrollbar-thumb:hover{background:#ffffff80}@media(max-width:768px){.resources-modal{padding:1.5rem;max-height:90vh}.resources-header h2{font-size:1.5rem}.resource-card{flex-direction:column;align-items:flex-start}.resource-link-btn{width:100%;text-align:center}.filter-btn{font-size:.8rem;padding:.4rem .8rem}}@media(max-width:480px){.resources-modal{padding:1rem;border-radius:15px}.resources-header h2{font-size:1.3rem}.resource-card h3{font-size:1rem}.resource-description{font-size:.85rem}}.dragdrop-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000d9;display:flex;justify-content:center;align-items:center;z-index:1000;padding:1rem;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .3s ease}.dragdrop-modal{background:linear-gradient(135deg,#4facfe,#00f2fe);border-radius:20px;padding:2rem;max-width:1000px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #00000080;position:relative;animation:slideUp .4s ease}.dragdrop-close-btn{position:absolute;top:1rem;right:1rem;background:#ffffff4d;border:none;border-radius:50%;width:40px;height:40px;font-size:1.5rem;color:#fff;cursor:pointer;transition:all .3s ease;z-index:10}.dragdrop-close-btn:hover{background:#ffffff80;transform:rotate(90deg)}.dragdrop-header{text-align:center;margin-bottom:1.5rem;color:#fff}.dragdrop-header h2{font-size:2rem;margin:0 0 .5rem;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.dragdrop-subtitle{font-size:1rem;margin:0;opacity:.9}.dragdrop-stats{display:flex;justify-content:center;align-items:center;gap:2rem;margin-bottom:1.5rem;padding:1rem;background:#fff3;border-radius:12px;flex-wrap:wrap}.stat-item{display:flex;align-items:center;gap:.5rem;color:#fff;font-weight:600}.stat-label{font-size:1rem}.stat-value{font-size:1.5rem;font-weight:800;background:#ffffff4d;padding:.25rem .75rem;border-radius:8px}.feedback-message{font-size:1.2rem;font-weight:700;color:#fff;animation:pulse .5s ease}.completion-banner{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;padding:1rem;text-align:center;border-radius:12px;margin-bottom:1.5rem;font-size:1.3rem;font-weight:800;animation:bounceIn .6s ease;box-shadow:0 4px 15px #0000004d}.dragdrop-game{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:1.5rem;min-height:400px}.dragdrop-column{display:flex;flex-direction:column;gap:.75rem}.dragdrop-item{background:#fff;padding:1rem 1.25rem;border-radius:12px;font-size:1rem;font-weight:600;cursor:grab;transition:all .3s ease;border:3px solid transparent;position:relative;box-shadow:0 2px 8px #0000001a;-webkit-user-select:none;user-select:none;min-height:60px;display:flex;align-items:center;justify-content:center;text-align:center}.left-item{background:linear-gradient(135deg,#ffecd2,#fcb69f);color:#8b4513}.right-item{background:linear-gradient(135deg,#a1c4fd,#c2e9fb);color:#1e3a8a}.dragdrop-item:not(.matched):hover{transform:translateY(-3px) scale(1.02);box-shadow:0 6px 20px #0003;border-color:#ffffff80}.dragdrop-item.dragging{opacity:.5;cursor:grabbing;transform:scale(.95)}.dragdrop-item.matched{background:linear-gradient(135deg,#84fab0,#8fd3f4);color:#0f5132;border-color:#28a745;cursor:default;animation:matchSuccess .5s ease}.match-indicator{position:absolute;top:-8px;right:-8px;background:#28a745;color:#fff;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;box-shadow:0 2px 8px #0000004d;animation:popIn .3s ease}.dragdrop-actions{display:flex;justify-content:center;gap:1rem;margin-top:1rem}.reset-btn,.next-btn{padding:.75rem 2rem;border:none;border-radius:10px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #0003}.reset-btn{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff}.next-btn{background:linear-gradient(135deg,#43e97b,#38f9d7);color:#fff}.reset-btn:hover,.next-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0000004d}.reset-btn:active,.next-btn:active{transform:translateY(0)}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}@keyframes bounceIn{0%{opacity:0;transform:scale(.3)}50%{opacity:1;transform:scale(1.05)}70%{transform:scale(.9)}to{transform:scale(1)}}@keyframes matchSuccess{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}@keyframes popIn{0%{transform:scale(0)}50%{transform:scale(1.2)}to{transform:scale(1)}}@media(max-width:768px){.dragdrop-modal{padding:1.5rem}.dragdrop-game{grid-template-columns:1fr;gap:1.5rem}.dragdrop-header h2{font-size:1.5rem}.dragdrop-item{font-size:.9rem;padding:.75rem 1rem;min-height:50px}.dragdrop-stats{gap:1rem;padding:.75rem}.stat-value{font-size:1.2rem}.dragdrop-actions{flex-direction:column}.reset-btn,.next-btn{width:100%}}@media(max-width:480px){.dragdrop-modal{padding:1rem;border-radius:15px}.dragdrop-header h2{font-size:1.3rem}.dragdrop-subtitle{font-size:.85rem}.dragdrop-item{font-size:.85rem;padding:.6rem .8rem}}@media(hover:none)and (pointer:coarse){.dragdrop-item:not(.matched){cursor:pointer}.dragdrop-item:active{transform:scale(.95)}}.simulation-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000e6;display:flex;justify-content:center;align-items:center;z-index:1000;padding:1rem;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:fadeIn .3s ease}.simulation-modal{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:20px;padding:2rem;max-width:800px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #00000080;position:relative;animation:slideUp .4s ease}.simulation-close-btn{position:absolute;top:1rem;right:1rem;background:#fff3;border:none;border-radius:50%;width:40px;height:40px;font-size:1.5rem;color:#fff;cursor:pointer;transition:all .3s ease;z-index:10}.simulation-close-btn:hover{background:#ffffff4d;transform:rotate(90deg)}.simulation-header{text-align:center;margin-bottom:1.5rem;color:#fff;position:relative}.simulation-header h2{font-size:2rem;margin:0;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.back-btn{position:absolute;left:0;top:50%;transform:translateY(-50%);background:#fff3;border:none;color:#fff;padding:.5rem 1rem;border-radius:8px;cursor:pointer;font-weight:600;transition:all .3s ease}.back-btn:hover{background:#ffffff4d;transform:translateY(-50%) translate(-3px)}.simulation-selector{text-align:center;color:#fff}.simulation-selector h3{font-size:1.5rem;margin-bottom:1.5rem}.simulation-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.simulation-card{background:#fffffff2;border-radius:12px;padding:1.5rem;cursor:pointer;transition:all .3s ease;color:#333}.simulation-card:hover{transform:translateY(-5px);box-shadow:0 10px 25px #0000004d;background:#fff}.simulation-card h4{margin:0 0 .5rem;color:#667eea;font-size:1.1rem}.simulation-card p{margin:0;font-size:.9rem;color:#666}.simulation-content{background:#fffffff2;border-radius:15px;padding:2rem;text-align:center}.simulation-content h3{margin:0 0 1.5rem;color:#667eea;font-size:1.5rem}.sim-canvas{background:#fff;border-radius:12px;box-shadow:0 4px 15px #0000001a;margin-bottom:1.5rem;max-width:100%;height:auto}.sim-controls{display:flex;flex-direction:column;gap:1rem;margin-bottom:1.5rem;text-align:left}.control-group{display:flex;flex-direction:column;gap:.5rem}.control-group label{font-weight:600;color:#333;font-size:.95rem}.slider{width:100%;height:8px;border-radius:5px;background:#d3d3d3;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);cursor:pointer;box-shadow:0 2px 5px #0003}.slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);cursor:pointer;border:none;box-shadow:0 2px 5px #0003}.slider:disabled{opacity:.5;cursor:not-allowed}.sim-actions{display:flex;gap:1rem;justify-content:center;margin-bottom:1.5rem}.sim-btn{padding:.75rem 1.5rem;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s ease;background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;box-shadow:0 4px 12px #0003}.sim-btn.primary{background:linear-gradient(135deg,#43e97b,#38f9d7)}.sim-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px 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