*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;background:linear-gradient(135deg, #2563eb 0%, #1e40af 100%);min-height:100vh;padding:20px;color:#333}.container{max-width:800px;margin:0 auto}.header{text-align:center;color:white;margin-bottom:30px}.header h1{font-size:2.5rem;margin-bottom:10px;text-shadow:2px 2px 4px rgba(0,0,0,0.2)}.subtitle{font-size:1.1rem;opacity:0.9}.stats-summary{background:rgba(255,255,255,0.15);border-radius:10px;padding:15px 20px;margin-bottom:25px;color:white;display:flex;justify-content:space-around;flex-wrap:wrap;gap:15px}.stats-summary .stat-item{text-align:center}.stats-summary .stat-value{font-size:1.8rem;font-weight:700}.stats-summary .stat-label{font-size:0.85rem;opacity:0.8}.route-list{display:grid;grid-template-columns:repeat(auto-fill, minmax(140px, 1fr));gap:12px;margin-bottom:20px}.route-card{background:white;border-radius:10px;padding:15px;text-align:center;text-decoration:none;color:#333;box-shadow:0 4px 6px rgba(0,0,0,0.1);transition:all 0.3s ease;cursor:pointer;border:2px solid transparent}.route-card:hover{transform:translateY(-3px);box-shadow:0 6px 12px rgba(0,0,0,0.15);border-color:#2563eb}.route-card.shuttle{background:#fef3c7}.route-card .route-code{font-size:1.5rem;font-weight:700;color:#2563eb;margin-bottom:5px}.route-card .route-notes{font-size:0.75rem;color:#666;line-height:1.3}.route-card .route-stats{margin-top:8px;font-size:0.7rem;color:#888;border-top:1px solid #eee;padding-top:8px}.route-card .route-stats .completions{color:#22c55e;font-weight:600}.route-card .route-stats .mastery{display:block;margin-top:2px}.practice-modes{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:15px}.practice-btn{padding:15px 20px;font-size:1rem;border:2px solid rgba(255,255,255,0.6);border-radius:10px;background:rgba(255,255,255,0.15);color:white;cursor:pointer;transition:all 0.3s ease;font-weight:600}.practice-btn:hover{background:rgba(255,255,255,0.25);border-color:white;transform:translateY(-2px)}.random-btn{display:block;width:100%;padding:15px 30px;font-size:1.1rem;border:2px solid white;border-radius:10px;background:rgba(255,255,255,0.2);color:white;cursor:pointer;transition:all 0.3s ease;font-weight:600;margin-bottom:20px}.random-btn:hover{background:white;color:#2563eb}.quiz-header{background:rgba(255,255,255,0.15);border-radius:10px;padding:15px 20px;margin-bottom:20px;color:white}.quiz-header .route-name{font-size:1.3rem;font-weight:700;margin-bottom:5px}.quiz-header .turn-counter{font-size:0.95rem;opacity:0.9}.quiz-card{background:white;border-radius:15px;padding:30px;margin-bottom:20px;box-shadow:0 8px 16px rgba(0,0,0,0.2);min-height:350px;display:flex;flex-direction:column}.question-text{font-size:1.4rem;font-weight:600;margin-bottom:25px;text-align:center;color:#1e40af}.answer-options{display:flex;flex-direction:column;gap:10px;flex:1}.answer-btn{padding:15px 20px;font-size:1rem;border:2px solid #e5e7eb;border-radius:10px;background:#f9fafb;color:#333;cursor:pointer;transition:all 0.2s ease;text-align:left}.answer-btn:hover:not(:disabled){background:#eff6ff;border-color:#2563eb;transform:translateX(5px)}.answer-btn.correct{background:#dcfce7;border-color:#22c55e;color:#166534}.answer-btn.wrong{background:#fee2e2;border-color:#ef4444;color:#991b1b;animation:shake 0.3s ease}.answer-btn:disabled{cursor:not-allowed}@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}.progress-container{margin-bottom:20px}.progress-bar{width:100%;height:10px;background:rgba(255,255,255,0.3);border-radius:10px;overflow:hidden}.progress-fill{height:100%;background:white;transition:width 0.3s ease;border-radius:10px}.progress-text{text-align:center;color:white;font-size:0.9rem;margin-top:5px;opacity:0.9}.wrong-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.8);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity 0.3s ease}.wrong-overlay.visible{opacity:1;pointer-events:auto}.wrong-content{background:white;border-radius:15px;padding:30px;max-width:400px;text-align:center}.wrong-content h2{color:#ef4444;margin-bottom:15px;font-size:1.5rem}.wrong-content .correct-answer{background:#dcfce7;border:2px solid #22c55e;border-radius:10px;padding:15px;margin:20px 0;font-weight:600;color:#166534}.wrong-content .restart-btn{padding:12px 30px;font-size:1rem;border:none;border-radius:8px;background:#2563eb;color:white;cursor:pointer;transition:all 0.2s ease;font-weight:600}.wrong-content .restart-btn:hover{background:#1e40af}.completion-screen{background:white;border-radius:15px;padding:40px;text-align:center;box-shadow:0 8px 16px rgba(0,0,0,0.2)}.completion-screen h2{color:#22c55e;font-size:2rem;margin-bottom:20px}.completion-screen .stats{margin:25px 0}.completion-screen .stats p{margin:8px 0;font-size:1.1rem;color:#555}.completion-screen .return-btn{padding:15px 40px;font-size:1.1rem;border:none;border-radius:10px;background:#2563eb;color:white;cursor:pointer;transition:all 0.2s ease;font-weight:600}.completion-screen .return-btn:hover{background:#1e40af}.back-btn{display:inline-block;padding:10px 20px;font-size:0.95rem;border:2px solid rgba(255,255,255,0.5);border-radius:8px;background:rgba(255,255,255,0.1);color:white;cursor:pointer;transition:all 0.2s ease;text-decoration:none;margin-bottom:20px}.back-btn:hover{background:rgba(255,255,255,0.2);border-color:white}.practice-header{display:flex;justify-content:space-between;align-items:center;background:rgba(255,255,255,0.15);border-radius:10px;padding:15px 20px;margin-bottom:20px;color:white}.practice-header h2{font-size:1.3rem;margin:0}.practice-score{font-size:1.2rem;font-weight:700}.practice-controls{display:flex;gap:12px;justify-content:center;margin-top:20px}.action-btn{padding:12px 25px;font-size:1rem;border:2px solid white;border-radius:8px;background:white;color:#2563eb;cursor:pointer;transition:all 0.2s ease;font-weight:600}.action-btn:hover{background:#2563eb;color:white;transform:translateY(-2px)}.action-btn.secondary{background:transparent;color:white}.action-btn.secondary:hover{background:rgba(255,255,255,0.2)}.action-btn:disabled{opacity:0.5;cursor:not-allowed;transform:none}.hidden{display:none !important}@media (max-width: 768px){.header h1{font-size:2rem}.route-list{grid-template-columns:repeat(auto-fill, minmax(100px, 1fr));gap:8px}.route-card{padding:12px}.route-card .route-code{font-size:1.3rem}.quiz-card{padding:20px;min-height:300px}.question-text{font-size:1.2rem}.answer-btn{padding:12px 15px;font-size:0.95rem}.stats-summary{padding:12px 15px}.stats-summary .stat-value{font-size:1.4rem}}@keyframes slideIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.container>*{animation:slideIn 0.4s ease-out}