.game-center{max-width:800px;margin:0 auto;padding:20px;text-align:center}.games-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-top:30px}.game-card{background:#fff;border-radius:16px;padding:20px;box-shadow:0 4px 6px #0000001a;transition:transform .2s;position:relative;overflow:hidden;border:3px solid transparent;cursor:pointer}.game-card.unlocked:hover{transform:translateY(-5px);border-color:#4caf50}.game-card.locked{opacity:.8;filter:grayscale(.8);cursor:not-allowed}.game-icon{font-size:48px;margin-bottom:10px}.play-btn{background:#4caf50;color:#fff;border:none;padding:10px 20px;border-radius:20px;font-weight:700;margin-top:10px;cursor:pointer}.lock-overlay{background:#0009;color:#fff;padding:5px 10px;border-radius:10px;margin-top:10px;display:inline-block}.skippy-game-container{position:relative;width:100%;max-width:800px;height:500px;margin:0 auto;background:linear-gradient(to bottom,#87ceeb,#e0f7fa);border-radius:12px;overflow:hidden;box-shadow:0 4px 12px #0003;font-family:Courier New,Courier,monospace}.game-canvas{display:block;width:100%;height:100%;cursor:pointer}.game-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#00000080;color:#fff;text-align:center}.game-overlay h2{font-size:3rem;margin-bottom:20px;text-shadow:2px 2px 0 #000}.game-overlay p{font-size:1.5rem;margin-bottom:30px}.start-btn{padding:15px 40px;font-size:1.5rem;background:#4caf50;color:#fff;border:none;border-radius:50px;cursor:pointer;font-weight:700;box-shadow:0 4px #2e7d32;transition:transform .1s}.start-btn:active{transform:translateY(4px);box-shadow:none}.score-display{position:absolute;top:20px;left:50%;transform:translate(-50%);font-size:3rem;font-weight:700;color:#fff;text-shadow:2px 2px 0 #000;z-index:10;pointer-events:none}.leaderboard{background:#ffffff26;border-radius:12px;padding:15px 20px;margin:20px 0;max-height:200px;overflow-y:auto;min-width:280px}.leaderboard h3{margin:0 0 10px;font-size:1.2rem;color:gold}.leaderboard ol{list-style:none;padding:0;margin:0}.leaderboard li{display:flex;align-items:center;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:1rem}.leaderboard li:last-child{border-bottom:none}.leaderboard li.current-user{background:#4caf504d;border-radius:6px;padding:6px 8px;margin:0 -8px}.leaderboard .rank{width:30px;font-weight:700;color:gold}.leaderboard .name{flex:1;text-align:left}.leaderboard .lb-score{font-weight:700;color:#4caf50}.personal-best{color:gold;font-size:1.1rem!important;margin-bottom:15px!important}.new-record{color:gold;font-size:1.8rem!important;font-weight:700;animation:pulse .5s ease-in-out infinite alternate}@keyframes pulse{0%{transform:scale(1)}to{transform:scale(1.1)}}.final-score{font-size:2rem!important;margin-bottom:10px!important}.back-btn{margin-top:15px;background:none;border:none;color:#fff;cursor:pointer;text-decoration:underline;font-size:1rem}.back-btn:hover{color:#ccc}.interactive-map-container{width:100%;max-width:100%;margin:0 auto;border-radius:12px;overflow:hidden;box-shadow:0 4px 10px #0000001a;background:#cef}.interactive-map-container.map-small{max-width:85%}.map-wrapper{position:relative;width:100%}.map-image{width:100%;display:block}.zoom-wrapper{width:100%!important;height:100%!important}.zoom-content{width:100%!important}.map-pin{position:absolute;cursor:pointer;z-index:10;display:flex;align-items:center;justify-content:center}.pin-marker{transition:all .2s ease;box-shadow:0 2px 4px #0003}.pin-marker.steden{width:20px;height:20px;background:#ff4757;border:2px solid white;border-radius:50%}.pin-marker.provincies{width:24px;height:24px;background:#ffa502;border:2px solid white;border-radius:4px;transform:rotate(45deg)}.pin-marker.wateren{width:22px;height:22px;background:#1e90ff;border:2px solid white;border-radius:50% 50% 50% 0;transform:rotate(-45deg)}.pin-marker.gebieden{width:24px;height:24px;background:#2ed573;border:2px solid white;border-radius:6px;opacity:.9}.map-pin:hover .pin-marker{transform:scale(1.3);z-index:20;border-color:#333}.map-pin:hover .pin-marker.wateren{transform:scale(1.3) rotate(-45deg)}.map-pin:hover .pin-marker.provincies{transform:scale(1.3) rotate(45deg)}.pin-label{position:absolute;bottom:30px;left:50%;transform:translate(-50%);background:#000c;color:#fff;padding:4px 8px;border-radius:4px;font-size:14px;font-weight:700;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .2s;z-index:100}.map-pin:hover .pin-label{opacity:1}.map-legend{position:absolute;bottom:20px;right:20px;background:#fff;padding:12px;border-radius:12px;box-shadow:0 4px 10px #00000026;z-index:50;border:1px solid #eee}.map-legend h4{margin:0 0 8px;font-size:14px;color:#333}.legend-item{display:flex;align-items:center;gap:8px;margin-bottom:6px;font-size:13px;color:#555}.legend-item:last-child{margin-bottom:0}.legend-icon{position:relative!important;transform:none!important}.legend-item .pin-marker.steden{transform:scale(.8)}.legend-item .pin-marker.provincies{transform:scale(.8) rotate(45deg)}.legend-item .pin-marker.wateren{transform:scale(.8) rotate(-45deg)}.legend-item .pin-marker.gebieden{transform:scale(.8)}@media (max-width: 768px){.map-legend{display:none}}.skippy-container{position:fixed;bottom:20px;right:20px;z-index:1000;display:flex;flex-direction:column;align-items:flex-end}.skippy-avatar{background:linear-gradient(135deg,#ff9800,#f57c00);color:#fff;width:60px;height:60px;border-radius:50%;border:4px solid white;box-shadow:0 4px 10px #0003;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;font-size:24px;transition:transform .3s ease;animation:float 3s ease-in-out infinite}.skippy-avatar:hover{transform:scale(1.1)}.skippy-label{font-size:10px;font-weight:700}.skippy-chat-window{background:#fff;width:300px;height:400px;border-radius:16px;box-shadow:0 8px 20px #00000026;margin-bottom:20px;display:flex;flex-direction:column;overflow:hidden;border:2px solid #FF9800}.chat-messages{flex:1;padding:15px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;background:#f9f9f9}.message{padding:8px 12px;border-radius:12px;font-size:14px;max-width:85%;line-height:1.4}.message.skippy{background:#fff3e0;align-self:flex-start;border-top-left-radius:2px;color:#e65100}.message.user{background:#e3f2fd;align-self:flex-end;border-bottom-right-radius:2px;color:#1565c0}.message.typing{font-style:italic;opacity:.7}.chat-actions{padding:10px;border-top:1px solid #eee;display:flex;gap:10px;background:#fff}.chat-actions button{flex:1;padding:8px;border:none;border-radius:8px;background:#f0f0f0;cursor:pointer;font-weight:700;font-size:12px;transition:background .2s}.chat-actions button:hover{background:#e0e0e0}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-10px)}to{transform:translateY(0)}}.skippy-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:2000;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.skippy-modal-content{display:flex;flex-direction:column;align-items:center;max-width:90%;width:400px}.skippy-avatar-large{font-size:4rem;background:#fff;width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:4px solid var(--primary);box-shadow:0 4px 10px #0000001a;z-index:2;margin-bottom:-40px}.skippy-message-bubble{background:#fff;padding:50px 30px 30px;border-radius:24px;text-align:center;box-shadow:0 10px 25px #00000026;width:100%;position:relative;border:2px solid var(--border)}.skippy-message-bubble h2{color:var(--primary);margin-bottom:12px;font-size:1.5rem}.skippy-text{font-size:1.1rem;color:var(--text);margin-bottom:24px;line-height:1.5}.skippy-modal-btn{background:var(--primary);color:#fff;border:none;padding:12px 32px;border-radius:50px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:transform .2s,background .2s;box-shadow:0 4px 0 var(--primary-dark)}.skippy-modal-btn:hover{transform:translateY(-2px);background:var(--primary-dark)}.skippy-modal-btn:active{transform:translateY(2px);box-shadow:none}.challenge-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:1000}.challenge-modal{background:linear-gradient(135deg,#1a1a2e,#16213e);border-radius:20px;padding:30px;max-width:400px;width:90%;position:relative;box-shadow:0 10px 40px #00000080;border:2px solid #4a5568}.challenge-modal.incoming{border-color:#f6ad55;animation:pulse-border 1s ease-in-out infinite}.challenge-modal .close-btn{position:absolute;top:10px;right:15px;background:none;border:none;color:#a0aec0;font-size:28px;cursor:pointer;transition:color .2s}.challenge-modal .close-btn:hover{color:#fff}.challenge-modal h2{text-align:center;color:#fff;margin-bottom:10px;font-size:24px}.challenge-icon{text-align:center;font-size:48px;margin-bottom:15px}.challenge-topic-header{text-align:center;color:#a0aec0;margin-bottom:20px}.challenge-topic-header strong{color:#68d391}.challenger-name{text-align:center;font-size:28px;color:#f6ad55;font-weight:700;margin:10px 0 5px}.challenge-topic{text-align:center;color:#a0aec0;margin-bottom:25px}.challenge-topic strong{color:#68d391}.challenge-buttons{display:flex;gap:15px;justify-content:center}.accept-btn,.decline-btn{padding:12px 24px;border-radius:10px;font-size:16px;font-weight:700;border:none;cursor:pointer;transition:transform .2s,box-shadow 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button.save-btn{background:#ff9800;color:#fff;border:none;padding:8px;border-radius:4px;cursor:pointer;font-weight:700}.hint-text{font-size:13px;color:#666;margin-bottom:15px}.question-item{padding:10px;background:#fff;border:1px solid #eee;border-radius:6px;cursor:pointer;display:flex;align-items:center;gap:10px;font-size:14px;transition:all .2s;justify-content:space-between}.question-item:hover{background:#eef2ff}.question-item.selected{background:#2196f3;color:#fff;border-color:#1976d2}.question-info{flex:1;display:flex;flex-direction:column}.question-info 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#00000080;display:block}.admin-map-image{max-width:100%;max-height:90vh;height:auto;object-fit:contain;display:block}.admin-pin{position:absolute;width:12px;height:12px;background:red;border:2px solid white;border-radius:50%;transform:translate(-50%,-50%);pointer-events:none}.admin-pin.active{background:#ffeb3b;width:16px;height:16px;z-index:10}.password-row{margin-top:5px;font-size:.9rem;color:#444}.password-display{cursor:pointer;padding:2px 6px;border-radius:4px;transition:background .2s}.password-display:hover{background:#e3f2fd}.edit-hint{font-size:.7rem;color:#999;margin-left:5px}.pw-edit{display:flex;gap:5px}.pw-edit input{padding:4px 8px;border:1px solid #ccc;border-radius:4px;font-size:.9rem}.pw-edit button{padding:4px 8px;cursor:pointer;border:none;border-radius:4px;background:#f5f5f5}.pw-edit button:hover{background:#e0e0e0}.avatar-creator-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:2000}.avatar-creator{background:#fff;padding:24px;border-radius:24px;width:95%;max-width:450px;text-align:center;box-shadow:0 10px 40px #0000004d;border:4px solid #fff;max-height:90vh;overflow-y:auto}.avatar-creator.embedded{box-shadow:none;padding:0;border:none;background:transparent}.avatar-preview-container{width:200px;height:200px;margin:0 auto 20px;position:relative;background:#f0f8ff;border-radius:16px;border:4px solid #fff;box-shadow:inset 0 0 20px #0000000d,0 5px 15px #0000001a;overflow:hidden}.avatar-layer{position:absolute;top:0;left:0;width:100%;height:100%;background-size:contain;background-position:center;background-repeat:no-repeat;transition:all .2s 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#0000001f;border-color:#2196f3;background:#fffffff2}.profile-avatar-wrapper{transition:transform .3s}.profile-card:hover .profile-avatar-wrapper{transform:scale(1.1)}.profile-name{font-weight:700;font-size:1.2rem;color:#37474f;text-align:center;margin-top:12px}.profile-level{font-size:.85rem;color:#78909c;margin-top:6px;background:#eceff1;padding:4px 10px;border-radius:20px;font-weight:600}.profile-card.new{border:2px dashed #90CAF9;background:#ffffff80}.new-icon{width:80px;height:80px;border-radius:50%;background:#e3f2fd;color:#2196f3;font-size:3rem;font-weight:300;display:flex;align-items:center;justify-content:center;margin-bottom:12px}.create-profile-wrapper,.login-modal{background:#ffffffe6;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:48px;border-radius:32px;box-shadow:0 20px 60px #00000026;text-align:center;width:100%;max-width:480px;border:1px solid rgba(255,255,255,.8);animation:popIn .3s cubic-bezier(.34,1.56,.64,1)}@keyframes popIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.create-profile-wrapper h2,.login-modal h2{color:#1565c0;font-size:2rem;margin-bottom:24px}.form-group,.password-input-group{margin-bottom:20px;text-align:left}.form-group label,.password-input-group label{display:block;margin-bottom:8px;color:#546e7a;font-weight:600;margin-left:4px}.name-input,.password-input{width:100%;padding:16px;font-size:1.2rem;border:2px solid #CFD8DC;border-radius:16px;background:#f9fafb;transition:all .2s;box-sizing:border-box;color:#37474f}.name-input:focus,.password-input:focus{border-color:#2196f3;background:#fff;outline:none;box-shadow:0 0 0 4px #2196f31a}.error-msg{color:#d32f2f;background:#ffebee;padding:10px;border-radius:8px;margin-bottom:20px;font-size:.9rem}.login-actions{display:flex;gap:12px;margin-top:24px}.cancel-btn,.back-btn-small{padding:14px 24px;border:none;background:#eceff1;color:#546e7a;font-weight:600;border-radius:14px;cursor:pointer;font-size:1rem;transition:all .2s}.cancel-btn:hover,.back-btn-small:hover{background:#cfd8dc;color:#37474f}.login-btn-confirm,.save-btn{flex:1;padding:14px 24px;border:none;background:linear-gradient(135deg,#2196f3,#1976d2);color:#fff;font-weight:700;border-radius:14px;cursor:pointer;font-size:1.1rem;box-shadow:0 4px 12px #2196f34d;transition:all .2s}.login-btn-confirm:hover,.save-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #2196f366}.profile-menu-container{position:fixed;top:20px;right:20px;z-index:1000}.profile-trigger{display:flex;align-items:center;gap:12px;background:#fff;padding:6px 6px 6px 16px;border-radius:50px;box-shadow:0 4px 10px #0000001a;cursor:pointer;transition:transform .2s,box-shadow .2s;-webkit-user-select:none;user-select:none;border:2px solid transparent}.profile-trigger:hover{transform:translateY(-2px);box-shadow:0 8px 20px #00000026;border-color:var(--primary)}.profile-trigger-name{font-weight:700;color:var(--text);font-size:1rem}.profile-mini-avatar{width:40px;height:40px;border-radius:50%;position:relative;border:2px solid white;box-shadow:0 2px 5px #0000001a;background-size:cover;overflow:hidden}.profile-mini-avatar .face{transform:scale(.5);top:10px;left:10px}.profile-mini-avatar .accessory{transform:scale(.5);top:5px;left:5px}.profile-dropdown{position:absolute;top:110%;right:0;width:200px;background:#fff;border-radius:12px;box-shadow:0 10px 30px #00000026;padding:8px;display:flex;flex-direction:column;animation:popIn .2s ease-out}.dropdown-header{padding:12px;display:flex;flex-direction:column;gap:4px;background:#f8fafc;border-radius:8px;margin-bottom:8px}.dropdown-header strong{color:var(--text);font-size:1rem}.dropdown-header span{color:var(--text-light);font-size:.8rem}.profile-dropdown button{background:none;border:none;padding:10px 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.player-name{color:#f59e0b;font-weight:700}.player-progress{height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden}.player-progress-fill{height:100%;background:linear-gradient(90deg,#4caf50,#81c784);border-radius:4px;transition:width .3s ease}.opponent-progress .player-progress-fill{background:linear-gradient(90deg,#f59e0b,#fbbf24)}.battle-timer-inline{flex-shrink:0;padding:0 15px}.timer-value{font-size:1.5rem;font-weight:700;color:var(--text);background:#fff;padding:8px 16px;border-radius:20px;box-shadow:var(--shadow)}.timer-value.danger{color:#ef4444;animation:pulse-danger .5s ease-in-out infinite}@keyframes pulse-danger{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.finished-tag{font-size:.75rem;background:#4caf50;color:#fff;padding:2px 8px;border-radius:10px;margin-top:4px;display:inline-block}.feedback-message.submitted{background:#e3f2fd;color:#1976d2;border:2px solid #2196F3}.answer-input.submitted{border-color:#2196f3;background:#e3f2fd}@media (max-width: 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5px;font-size:1rem;font-weight:700}.score-big{font-size:2rem;font-weight:800;color:var(--primary);line-height:1}.score-label{color:var(--text-light);font-size:.75rem;margin-bottom:10px}.stats-grid{display:flex;justify-content:space-around;gap:5px;border-top:1px solid var(--border);padding-top:8px}.stat{display:flex;flex-direction:column}.stat-value{color:var(--text);font-weight:700;font-size:.875rem}.stat-label{color:var(--text-light);font-size:.65rem}.vs-divider{color:var(--text-light);font-weight:700;font-size:.875rem;padding-top:0}.answers-review{background:var(--card);border-radius:var(--radius);padding:15px;margin-bottom:15px;box-shadow:var(--shadow);max-height:300px;overflow-y:auto}.answers-review h3{color:var(--text);margin:0 0 10px;text-align:center;font-size:1rem}.answers-list{display:flex;flex-direction:column;gap:6px}.answer-row{background:var(--background);border-radius:var(--radius-sm);padding:8px 10px;border:1px solid var(--border);font-size:.875rem}.question-text{color:var(--text);font-weight:600;margin-bottom:4px;font-size:.875rem}.answer-comparison{display:grid;grid-template-columns:1fr auto 1fr;gap:8px;align-items:center}.answer{padding:2px 6px;border-radius:4px;font-size:.75rem;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.answer.correct{background:#dcfce7;color:#166534}.answer.wrong{background:#fee2e2;color:#991b1b}.correct-answer{color:var(--success);font-weight:700;font-size:.75rem;text-align:center}.close-results-btn{display:block;width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius);font-size:1rem;font-weight:700;cursor:pointer;transition:transform .2s,background .2s}.close-results-btn:hover{background:var(--primary-dark);transform:translateY(-2px)}@media (max-width: 500px){.results-comparison{flex-direction:row}.stats-grid{flex-wrap:wrap}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6366f1;--primary-dark: #4f46e5;--secondary: #f59e0b;--success: #22c55e;--error: #ef4444;--background: #f8fafc;--card: #ffffff;--text: #1e293b;--text-light: #64748b;--border: #e2e8f0;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--radius: 16px;--radius-sm: 8px}body{font-family:Nunito,sans-serif;background:var(--background);color:var(--text);min-height:100vh}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:16px}.loading-spinner{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.home{max-width:800px;margin:0 auto;padding:24px}.home-header{text-align:center;margin-bottom:20px;position:relative}.avatar-btn{position:absolute;top:0;right:0;background:#fff;border:2px solid #ddd;padding:5px 10px;border-radius:15px;font-size:12px;cursor:pointer}.game-center-promo{text-align:center;margin-top:40px;padding:20px;background:#e8f5e9;border-radius:16px}.game-center-btn{background:#4caf50;color:#fff;font-size:20px;padding:15px 40px;border-radius:30px;border:none;cursor:pointer;font-weight:700;box-shadow:0 4px #2e7d32;transition:transform .1s}.game-center-btn:active{transform:translateY(4px);box-shadow:none}.home-header h1{font-size:2rem;font-weight:800;color:var(--primary);margin-bottom:4px}.home-header p{font-size:1.25rem;color:var(--text-light)}.scoreboard{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px}.scoreboard-item{background:var(--card);border-radius:var(--radius);padding:16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow)}.scoreboard-icon{font-size:2rem}.scoreboard-info{display:flex;flex-direction:column}.scoreboard-value{font-size:1.25rem;font-weight:700}.scoreboard-label{font-size:.75rem;color:var(--text-light)}.level-progress{width:60px;height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-top:4px}.level-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:3px;transition:width .3s ease}.subject-section{margin-bottom:24px}.subject-section h2{font-size:1.5rem;margin-bottom:16px;border-bottom:2px solid #eee;padding-bottom:8px;color:var(--text)}.modules-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-bottom:16px}.module-card{background:var(--card);border-radius:var(--radius);padding:16px;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;border:3px solid transparent}.module-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--accent-color, var(--primary))}.module-card.coming-soon{opacity:.6;pointer-events:none}.module-icon{font-size:3rem;display:block;margin-bottom:12px}.module-card h3{font-size:1.25rem;margin-bottom:4px}.module-card p{font-size:.875rem;color:var(--text-light);margin-bottom:12px}.play-button{display:inline-block;background:var(--primary);color:#fff;padding:8px 16px;border-radius:var(--radius-sm);font-weight:600;font-size:.875rem}.stats-link{display:block;text-align:center;color:var(--primary);font-weight:600;text-decoration:none;padding:12px}.stats-link:hover{text-decoration:underline}.quiz-page{max-width:1200px;margin:0 auto;padding:24px;min-height:100vh}.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.back-button{background:none;border:none;font-size:1rem;font-weight:600;color:var(--text-light);cursor:pointer;font-family:inherit}.back-button:hover{color:var(--text)}.quiz-stats{display:flex;gap:16px}.quiz-stats span{font-size:1.25rem;font-weight:700}.streak{color:#f97316}.points{color:var(--secondary)}.progress-container{margin-bottom:32px}.progress-bar{width:100%;height:12px;background:var(--border);border-radius:6px;overflow:hidden;margin-bottom:8px}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),#8b5cf6);border-radius:6px;transition:width .3s ease}.progress-text{font-size:.875rem;color:var(--text-light);text-align:center;display:block}.question-card{background:var(--card);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-lg)}.question-content{margin-bottom:24px}.question-text{font-size:1.5rem;font-weight:700;line-height:1.4;margin-bottom:16px}.hint-button{background:#fef3c7;border:2px solid #fcd34d;color:#92400e;padding:10px 20px;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;font-family:inherit;transition:background .2s}.hint-button:hover:not(:disabled){background:#fde68a}.hint-button:disabled{opacity:.7;cursor:not-allowed}.hint-box{background:#fef3c7;border-left:4px solid #f59e0b;padding:12px 16px;border-radius:var(--radius-sm);font-size:1rem;color:#92400e}.options-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}.option-button{background:var(--background);border:3px solid var(--border);padding:20px;border-radius:var(--radius);font-size:1.125rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit;text-align:center}.option-button:hover:not(:disabled){border-color:var(--primary);background:#eef2ff}.option-button.correct{background:#dcfce7;border-color:var(--success);color:#166534}.option-button.incorrect{background:#fee2e2;border-color:var(--error);color:#991b1b}.option-button.disabled{opacity:.5;cursor:not-allowed}.result-box{display:flex;align-items:flex-start;gap:16px;padding:20px;border-radius:var(--radius);margin-bottom:24px}.result-box.correct{background:#dcfce7;border:2px solid var(--success)}.result-box.incorrect{background:#fee2e2;border:2px solid var(--error)}.result-icon{font-size:2rem}.result-content{flex:1}.result-text{font-size:1.125rem;font-weight:700}.explanation{margin-top:8px;font-size:1rem;opacity:.9}.next-button{width:100%;background:var(--primary);color:#fff;border:none;padding:16px;border-radius:var(--radius);font-size:1.125rem;font-weight:700;cursor:pointer;font-family:inherit;transition:background .2s}.next-button:hover{background:var(--primary-dark)}.quiz-result{max-width:600px;margin:0 auto;padding:24px;text-align:center}.result-header{background:var(--card);border-radius:var(--radius);padding:48px 32px;margin-bottom:32px;box-shadow:var(--shadow-lg)}.result-emoji{font-size:5rem;display:block;margin-bottom:16px}.result-header h1{font-size:2rem;margin-bottom:16px;color:var(--primary)}.result-score{font-size:1.5rem;color:var(--text);margin-bottom:8px}.result-points{font-size:1.25rem;color:var(--secondary);font-weight:700}.wrong-answers-section{background:var(--card);border-radius:var(--radius);padding:24px;margin-bottom:32px;text-align:left;box-shadow:var(--shadow)}.wrong-answers-section h2{font-size:1.25rem;margin-bottom:16px;color:var(--text-light)}.wrong-answers-list{list-style:none}.wrong-answer-item{padding:16px;border-bottom:1px solid var(--border)}.wrong-answer-item:last-child{border-bottom:none}.wrong-question{font-weight:600;margin-bottom:8px}.wrong-given span.incorrect{color:var(--error)}.wrong-correct span.correct{color:var(--success);font-weight:600}.result-actions{display:flex;gap:16px;justify-content:center}.btn-primary,.btn-secondary{padding:16px 32px;border-radius:var(--radius);font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit;border:none;transition:transform .2s,box-shadow .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.btn-secondary{background:var(--background);color:var(--text);border:2px solid var(--border)}.btn-secondary:hover{border-color:var(--primary)}.achievement-popup-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.achievement-popup{background:var(--card);border-radius:var(--radius);padding:48px;text-align:center;box-shadow:var(--shadow-lg);animation:popIn .4s cubic-bezier(.175,.885,.32,1.275);max-width:90%;width:360px}@keyframes popIn{0%{transform:scale(.5);opacity:0}to{transform:scale(1);opacity:1}}.achievement-popup-icon{font-size:5rem;display:block;margin-bottom:16px;animation:bounce .6s ease infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.achievement-popup h2{color:var(--secondary);margin-bottom:8px}.achievement-popup h3{font-size:1.5rem;margin-bottom:8px}.achievement-popup p{color:var(--text-light);margin-bottom:24px}.achievement-popup button{background:var(--primary);color:#fff;border:none;padding:12px 32px;border-radius:var(--radius-sm);font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit}.stats-page{max-width:800px;margin:0 auto;padding:24px}.stats-header{margin-bottom:32px}.stats-header h1{font-size:2rem;margin-top:16px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}.stat-card{background:var(--card);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow)}.stat-card.big{grid-column:span 3;background:linear-gradient(135deg,var(--primary),#8b5cf6);color:#fff}.stat-card.big .stat-label{color:#fffc}.stat-icon{font-size:2rem;display:block;margin-bottom:8px}.stat-value{font-size:2rem;font-weight:800;display:block}.stat-card.big .stat-value{font-size:3rem}.stat-label{font-size:.875rem;color:var(--text-light)}.achievements-section{margin-bottom:32px}.achievements-section h2{font-size:1.5rem;margin-bottom:16px}.no-achievements{color:var(--text-light);font-style:italic}.achievements-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}.achievement-card{background:var(--card);border-radius:var(--radius);padding:16px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow)}.achievement-icon{font-size:2.5rem}.achievement-info h3{font-size:1rem;margin-bottom:4px}.achievement-info p{font-size:.875rem;color:var(--text-light)}.progress-section h2{font-size:1.5rem;margin-bottom:16px}.category-progress-list{display:flex;flex-direction:column;gap:12px}.category-progress-item{background:var(--card);border-radius:var(--radius);padding:16px 20px;display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow)}.category-info h3{font-size:1rem;text-transform:capitalize}.category-info p{font-size:.875rem;color:var(--text-light);text-transform:capitalize}.category-stats{font-weight:600;color:var(--primary)}.no-questions{text-align:center;padding:48px}.no-questions h2{font-size:2rem;margin-bottom:16px}.no-questions p{color:var(--text-light);margin-bottom:24px}@media (max-width: 640px){.scoreboard{grid-template-columns:repeat(2,1fr)}.options-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat-card.big{grid-column:span 2}.result-actions{flex-direction:column}.home-header h1{font-size:2rem}.quiz-page{padding:12px}.quiz-input-area{flex-direction:column;gap:12px}.answer-btn{width:100%;padding:16px}.quiz-header{margin-bottom:16px}.question-text{font-size:1.25rem;margin-bottom:12px}}.quiz-input-area{margin-top:20px;display:flex;gap:12px;justify-content:center;width:100%;max-width:600px;margin-left:auto;margin-right:auto}.answer-input{flex:1;padding:16px;border:3px solid #ddd;border-radius:12px;font-size:1.2rem;font-family:inherit;outline:none;transition:all .2s}.answer-input:focus{border-color:#2196f3;box-shadow:0 0 0 4px #2196f333}.answer-input.correct{border-color:#4caf50;background:#e8f5e9;color:#2e7d32}.answer-input.incorrect{border-color:#f44336;background:#ffebee;color:#c62828}.answer-btn{background:#2196f3;color:#fff;border:none;padding:0 32px;border-radius:12px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .2s}.answer-btn:hover:not(:disabled){background:#1976d2;transform:translateY(-2px)}.answer-btn:disabled{background:#ccc;cursor:not-allowed}.feedback-message{margin-top:20px;padding:20px;border-radius:12px;text-align:center;font-size:1.2rem;animation:popIn .3s cubic-bezier(.175,.885,.32,1.275)}.feedback-message.correct{background:#e8f5e9;color:#2e7d32;border:2px solid #4CAF50}.feedback-message.incorrect{background:#ffebee;color:#c62828;border:2px solid #F44336}.feedback-message.almost-correct{background:#fff8e1;color:#f57f17;border:2px solid #FFC107}.module-card-wrapper{display:flex;flex-direction:column;gap:8px}.challenge-module-btn{background:linear-gradient(135deg,#ed8936,#dd6b20);color:#fff;border:none;padding:10px 16px;border-radius:10px;font-size:.9rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s;display:flex;align-items:center;justify-content:center;gap:8px}.challenge-module-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #ed893666}.challenge-module-btn .online-badge{background:#48bb78;color:#fff;font-size:.75rem;padding:2px 8px;border-radius:10px;font-weight:700}.mode-selection{text-align:center;padding:40px 20px;max-width:800px;margin:0 auto}.mode-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;margin-top:40px}.mode-card{background:#fff;border-radius:20px;padding:30px;cursor:pointer;transition:transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease;border:3px solid transparent;box-shadow:0 10px 20px #0000000d;display:flex;flex-direction:column;align-items:center;text-align:center}.mode-card:hover{transform:translateY(-10px) scale(1.02);box-shadow:0 15px 30px #0000001a}.mode-card.study{border-color:#2196f3}.mode-card.study .icon{background:#e3f2fd;color:#2196f3}.mode-card.quiz{border-color:#4caf50}.mode-card.quiz .icon{background:#e8f5e9;color:#4caf50}.mode-card.challenge{border-color:#ff9800;position:relative}.mode-card.challenge .icon{background:#fff3e0;color:#ff9800}.mode-card .online-indicator{position:absolute;top:15px;right:15px;background:#4caf50;color:#fff;font-size:12px;font-weight:700;padding:4px 10px;border-radius:12px;animation:pulse-online 2s infinite}@keyframes pulse-online{0%,to{opacity:1}50%{opacity:.7}}.mode-card .icon{font-size:48px;width:100px;height:100px;display:flex;align-items:center;justify-content:center;border-radius:50%;margin-bottom:20px;transition:transform .3s ease}.mode-card:hover .icon{transform:rotate(10deg)}.mode-card h2{font-size:24px;margin-bottom:10px;color:#333}.mode-card p{color:#666;line-height:1.5}.back-button{background:none;border:none;color:#666;font-weight:700;cursor:pointer;padding:8px 16px;border-radius:8px;transition:background .2s;display:flex;align-items:center}.back-button:hover{background:#0000000d;color:#333}.study-mode .quiz-header h1{margin:0;font-size:24px}