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auto;overflow:hidden;background-color:#f8f9fa;border-radius:8px;box-shadow:0 2px 8px #0000001a;position:relative}#flag-carousel.hidden{display:none}.flag-scroll{display:flex;width:max-content;padding:15px 0;animation:scroll 60s linear infinite}.flag-scroll:hover{cursor:pointer;animation-play-state:paused}@keyframes scroll{0%{transform:translate(0)}to{transform:translate(-1750px)}}.flag-item{position:relative;display:inline-block;margin:0 2px;flex:0 0 auto}.carousel-flag{height:40px;margin:0 10px;border-radius:4px;box-shadow:0 2px 4px #0000001a;transition:transform .3s ease;display:block;object-fit:cover}.carousel-flag:hover{transform:scale(1.2);z-index:10}.flag-name{position:absolute;top:-36%;left:50%;transform:translate(-50%);background-color:#0009;color:#fff;text-align:center;padding:4px 8px;border-radius:4px;font-size:12px;white-space:nowrap;opacity:0;height:0;overflow:hidden;transition:opacity .3s,height .3s;z-index:20}.flag-item:hover .flag-name{opacity:1;height:auto}.flag-carousel-container{width:100%;overflow:hidden;margin:20px 0;background-color:#f5f5f5;border-radius:8px;padding:15px 0;box-shadow:inset 0 0 10px #0000001a}.flag-carousel-container.horizontal-scroll{display:flex;overflow-x:auto;gap:1rem;padding:1rem 0;scroll-behavior:smooth}.flag-carousel-container.horizontal-scroll .carousel-flag{display:flex;flex-direction:column;align-items:center;min-width:100px;text-align:center;gap:.5rem;height:auto;margin:0}.flag-carousel-container.horizontal-scroll .carousel-flag img{width:60px;height:40px;object-fit:cover;border-radius:4px;box-shadow:0 1px 3px #0000001a}.flag-carousel-container.horizontal-scroll .carousel-flag span{font-size:.8rem;color:#666;max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.flag-carousel{display:flex;transition:transform .1s linear;will-change:transform}.country-flag{display:block;margin:10px auto;border-radius:4px;box-shadow:0 2px 4px #0003}.country-flag.flag-quiz{max-width:250px!important}@media (max-width: 768px){#flag-carousel{width:100%;margin:15px 0}.carousel-flag{height:32px;margin:0 8px}.flag-carousel-container.horizontal-scroll .carousel-flag img{width:50px;height:32px}.flag-carousel-container.horizontal-scroll{gap:.75rem;padding:.75rem 0}}@media (max-width: 480px){.carousel-flag{height:28px;margin:0 6px}.flag-carousel-container.horizontal-scroll .carousel-flag img{width:42px;height:28px}}.site-header{background-color:#fff;box-shadow:0 2px 10px #0000001a;padding:10px 15px;position:sticky;top:0;z-index:100}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:0 20px}.logo-section{flex:1;text-align:center}.site-logo{font-family:Pacifico,cursive;font-size:28px;color:#3498db;text-align:center;flex:2;text-shadow:1px 1px 2px rgba(0,0,0,.1);transition:all .3s ease}.site-logo:hover{transform:scale(1.05)}.account-section{display:flex;align-items:center}.login-btn{display:flex;align-items:center;gap:8px;background-color:var(--primary-color);color:#fff;border:none;border-radius:4px;padding:8px 16px;font-size:14px;cursor:pointer;transition:background-color .2s}.login-btn:hover,.login-btn:focus{background-color:var(--primary-hover)}.account-btn{display:flex;align-items:center;background-color:transparent;border:none;padding:8px 12px;border-radius:20px;cursor:pointer;transition:background-color .2s}.user-menu{position:relative}.dropdown-menu{position:absolute;top:100%;right:0;background-color:#fff;border-radius:8px;box-shadow:0 4px 12px #00000026;min-width:180px;z-index:1000;overflow:hidden;opacity:0;transform:translateY(-10px);visibility:hidden;transition:all .3s ease}.dropdown-menu.show{opacity:1;transform:translateY(0);visibility:visible}.dropdown-menu a{display:flex;align-items:center;padding:12px 16px;color:#333;text-decoration:none;transition:background-color .2s}.dropdown-menu a:hover{background-color:#f5f7fa}.dropdown-menu i{margin-right:10px;font-size:18px;width:20px;text-align:center}.menu-divider{height:1px;background-color:#e0e0e0;margin:4px 0}.account-prompt{display:flex;align-items:center;background-color:#f8f9fa;border-radius:20px;padding:8px 16px;margin-right:15px;animation:pulse 2s infinite}@keyframes pulse{0%{box-shadow:0 0 #4caf5066}70%{box-shadow:0 0 0 10px #4caf5000}to{box-shadow:0 0 #4caf5000}}.sync-message{display:flex;align-items:center;gap:8px;font-size:14px;color:#4caf50}.auth-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.auth-container{background-color:#fff;border-radius:8px;width:400px;max-width:90%;box-shadow:0 4px 20px #0003;position:relative;overflow:hidden}.close-auth-modal{position:absolute;top:10px;right:10px;background:none;border:none;font-size:24px;cursor:pointer;color:#666}.auth-tabs{display:flex;border-bottom:1px solid #eee}.auth-tab{flex:1;padding:15px;background:none;border:none;font-size:16px;font-weight:500;cursor:pointer;color:#666;transition:all .3s}.auth-tab.active{background-color:var(--primary-color);color:#fff;border-radius:4px 4px 0 0;border:none}.auth-content{padding:20px}.auth-form{display:none}.auth-form.active{display:block}.auth-form h3{margin-top:0;color:#333;font-size:20px}.auth-subtitle{color:#666;margin-bottom:20px;font-size:14px}.form-group{margin-bottom:15px}.form-group label{display:block;margin-bottom:5px;font-size:14px;color:#555}.form-group input{width:95%;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:14px}.auth-submit-btn{background-color:var(--primary-color);color:#fff;border:none;border-radius:4px;padding:10px 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5px;font-size:24px}.profile-email{color:#666;font-size:14px}.profile-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:15px;margin-bottom:30px}.stat-card{background-color:#f8f9fa;border-radius:6px;padding:15px;text-align:center}.stat-value{font-size:24px;font-weight:600;color:#4caf50;margin-bottom:5px}.stat-label{font-size:14px;color:#666}.profile-section{margin-bottom:30px}.profile-section h3{border-bottom:1px solid #eee;padding-bottom:10px;margin-bottom:15px}.quiz-history-list{margin-top:15px}.quiz-history-item{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid #f0f0f0}.quiz-history-info{flex:1}.quiz-date{font-size:12px;color:#999}.quiz-score{font-weight:600;color:#4caf50}.back-to-quiz-btn{display:inline-block;margin-top:20px;padding:10px 20px;background-color:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer;transition:background-color .3s}.back-to-quiz-btn:hover{background-color:#45a049}.header-avatar-image{width:32px;height:32px;border-radius:50%;object-fit:cover;margin-right:8px}.account-initial{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background-color:#4caf50;color:#fff;border-radius:50%;font-weight:700;margin-right:8px}.account-name{font-weight:500;margin-right:8px;max-width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.profile-icon,.logout-icon{color:#555}.view-profile:hover .profile-icon{color:#2196f3}.logout:hover .logout-icon,.logout:hover span{color:#f44336}.header-content{display:flex;justify-content:space-between;align-items:center;padding:0 20px;width:100%;max-width:1200px;margin:0 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#ffeeba;display:flex;justify-content:center;align-items:center;flex-wrap:wrap}.resend-verification-btn{background:none;border:none;color:#0056b3;text-decoration:underline;cursor:pointer;font-size:14px;padding:0;margin-left:5px}.resend-verification-btn:hover{color:#003d7a}.resend-verification-btn:disabled{color:#6c757d;cursor:not-allowed}.verification-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.verification-modal{background-color:#fff;padding:30px;border-radius:8px;box-shadow:0 4px 12px #00000026;text-align:center;max-width:400px;width:90%}.spinner{border:4px solid #f3f3f3;border-top:4px solid #3498db;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto 20px}.success-icon{background-color:#2ecc71;color:#fff;width:50px;height:50px;border-radius:50%;display:flex;justify-content:center;align-items:center;font-size:24px;margin:0 auto 20px}.error-icon{background-color:#e74c3c;color:#fff;width:50px;height:50px;border-radius:50%;display:flex;justify-content:center;align-items:center;font-size:24px;margin:0 auto 20px}.verification-modal button{background-color:#3498db;color:#fff;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;font-size:16px;margin-top:20px}.verification-modal button:hover{background-color:#2980b9}@keyframes 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p{font-size:.9rem;margin-bottom:15px}.profile-stats{grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:25px}.stat-card{padding:12px}.stat-value{font-size:20px}.stat-label{font-size:13px}.quiz-history-item{flex-direction:column;gap:8px;padding:12px 0}.quiz-history-info{text-align:left}.quiz-score{text-align:left;font-size:16px}.camera-container{padding:15px;margin:15px 0}#camera-preview{max-width:100%;height:auto}.camera-controls{flex-direction:column;gap:10px}.camera-controls button{width:100%;padding:12px}}@media (max-width: 600px){.profile-actions{flex-direction:column;gap:8px}.change-avatar-btn,.take-photo-btn{width:100%;padding:12px 16px;font-size:15px}.profile-stats{grid-template-columns:1fr;gap:10px}.profile-container h2{font-size:1.8rem;text-align:center;margin-bottom:20px}.profile-section h3{font-size:1.2rem}.view-collection-btn{width:100%;margin-top:8px;padding:8px 12px;font-size:13px}.back-to-quiz-btn{width:100%;padding:15px;font-size:16px;margin-top:30px}}@media (max-width: 480px){.profile-container{padding:10px}.profile-avatar{width:100px;height:100px}.profile-info-user h3{font-size:1.3rem}.stat-value{font-size:18px}.stat-label{font-size:12px}.profile-container h2{font-size:1.5rem}.quiz-history-item{padding:10px 0}}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}.change-avatar-btn:hover,.take-photo-btn:hover{animation:pulse 1s infinite}@media (max-width: 768px){.account-name,.language-selector label{display:none}.right-section{gap:8px}}@media (max-width: 480px){.site-logo{font-size:1.2rem}.language-selector select{padding:2px 4px;font-size:.8rem}}.header-dropdown-menu{right:0;min-width:160px}.header-content{display:flex;justify-content:space-between;align-items:center}@media (max-width: 480px){.header-content{justify-content:space-between;padding:0 5px}.left-section{flex:0 0 auto}.site-logo{flex:1;text-align:center;margin:0 5px;font-size:1.1rem}.right-section{flex:0 0 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