.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;position:relative;overflow:hidden}.background-animation{position:absolute;top:0;left:0;width:100%;height:100%;z-index:1}.circle{position:absolute;border-radius:50%;background:#ffffff1a;animation:float 6s ease-in-out infinite}.circle-1{width:200px;height:200px;top:10%;left:10%;animation-delay:0s}.circle-2{width:150px;height:150px;top:60%;right:10%;animation-delay:2s}.circle-3{width:100px;height:100px;bottom:10%;left:20%;animation-delay:4s}@keyframes float{0%,to{transform:translateY(0) scale(1);opacity:.7}50%{transform:translateY(-20px) scale(1.05);opacity:1}}.auth-card{background:#fff;padding:40px;border-radius:20px;box-shadow:0 15px 35px #0000001a,0 3px 10px #0000000d;width:100%;max-width:420px;position:relative;z-index:2;animation:slideUp .6s ease-out}@keyframes 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4px}.auth-label{position:absolute;top:16px;left:16px;color:#5f6368;font-size:16px;pointer-events:none;transition:all .3s ease;background:#fff;padding-left:20px}.password-toggle{position:absolute;right:16px;top:50%;transform:translateY(-50%);background:none;border:none;color:#5f6368;cursor:pointer;padding:4px;transition:color .3s ease}.password-toggle:hover{color:#1a73e8}.submit-btn{width:100%;padding:14px 24px;background:#1a73e8;color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:10px}.submit-btn:hover:not(:disabled){background:#1669d6;transform:translateY(-1px);box-shadow:0 4px 12px #1a73e84d}.submit-btn:active:not(:disabled){transform:translateY(0)}.submit-btn:disabled{background:#dadce0;cursor:not-allowed;transform:none;box-shadow:none}.spinner{width:18px;height:18px;border:2px solid transparent;border-top:2px solid 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admin-dashboard-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.admin-dashboard-header{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1rem 2rem;box-shadow:0 2px 20px #0000001a;border-bottom:1px solid rgba(255,255,255,.2)}.admin-dashboard-header-content{display:flex;justify-content:space-between;align-items:center;max-width:1400px;margin:0 auto}.admin-dashboard-header-left .admin-dashboard-logo{display:flex;align-items:center;gap:12px;font-size:1.5rem;font-weight:700;color:#2c3e50}.admin-dashboard-header-left .admin-dashboard-logo i{color:#667eea;font-size:1.8rem}.admin-dashboard-header-right{display:flex;align-items:center;gap:20px}.admin-dashboard-info{display:flex;align-items:center;gap:8px;padding:8px 16px;background:#f8f9fa;border-radius:25px;color:#2c3e50;font-weight:500}.admin-dashboard-info i{color:#667eea}.admin-dashboard-logout-btn{background:#e74c3c;color:#fff;border:none;padding:10px 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#00000026}.admin-dashboard-test-header{margin-bottom:1rem}.admin-dashboard-test-name{color:#2c3e50;font-size:1.2rem;font-weight:600;margin:0}.admin-dashboard-test-details{display:flex;flex-direction:column;gap:.8rem;margin-bottom:1.5rem}.admin-dashboard-test-info{display:flex;align-items:center;gap:10px;color:#5a6c7d}.admin-dashboard-test-info i{color:#27ae60;width:16px}.admin-dashboard-test-actions{display:flex;gap:10px}.admin-dashboard-btn-warning,.admin-dashboard-btn-danger,.admin-dashboard-btn-secondary{padding:8px 16px;border:none;border-radius:20px;cursor:pointer;display:flex;align-items:center;gap:6px;font-size:.9rem;font-weight:500;transition:all .3s 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i{color:#667eea;font-size:2.2rem}.announcements-subtitle{color:#7f8c8d;font-size:1.2rem;margin:0;line-height:1.5}.header-stats{display:flex;gap:2rem}.stat-item{display:flex;flex-direction:column;align-items:center;padding:1rem 1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:15px;color:#fff;min-width:80px}.stat-number{font-size:2rem;font-weight:700;line-height:1}.stat-label{font-size:.9rem;opacity:.9;margin-top:.5rem}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.error-message{background:#e74c3c;color:#fff;padding:1rem 1.5rem;border-radius:10px;margin-bottom:2rem;display:flex;align-items:center;justify-content:space-between;box-shadow:0 4px 15px #e74c3c4d}.error-message i{margin-right:10px}.error-close{background:none;border:none;color:#fff;cursor:pointer;padding:5px;border-radius:50%;transition:background-color .3s ease}.error-close:hover{background:#fff3}.no-announcements{text-align:center;padding:4rem 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.stat-label{display:block;color:var(--light-text);font-size:.9rem;margin-bottom:.5rem}.submission-page .stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--dark-text)}.submission-page .stat-value.score{color:var(--success-color)}.submission-page .stat-value.percentage{color:var(--primary-color)}.submission-page .submissions-list{display:flex;flex-direction:column;gap:1.5rem}.submission-page .submission-card{background:#fff;border-radius:12px;box-shadow:var(--card-shadow);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease}.submission-page .submission-card:hover{transform:translateY(-2px);box-shadow:var(--card-hover-shadow)}.submission-page .question-header{padding:1.5rem 1.5rem 0}.submission-page .question-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.submission-page .question-number{font-size:1.1rem;font-weight:700;color:var(--primary-color)}.submission-page .status-badge{padding:.4rem 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.back-btn:hover{background:var(--secondary-color);transform:translateY(-2px)}.submission-page .retry-btn{background:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.submission-page .retry-btn:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px)}.submission-page .empty-state{text-align:center;padding:3rem 2rem;background:#fff;border-radius:12px;box-shadow:var(--card-shadow)}.submission-page .empty-icon{font-size:4rem;margin-bottom:1rem}.submission-page .empty-state h2{margin-bottom:1rem;color:var(--dark-text)}.submission-page .empty-state p{margin-bottom:2rem;color:var(--light-text)}@media (max-width: 768px){.submission-page .submission-container{padding:1rem}.submission-page .sub-header-content h1{font-size:2rem}.submission-page .test-stats{grid-template-columns:1fr}.submission-page .question-meta{flex-direction:column;gap:1rem;align-items:flex-start}.submission-page 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.empty-state{text-align:center;padding:3rem 2rem;background-color:#fff;border-radius:10px;box-shadow:var(--card-shadow)}.history-page .empty-icon{font-size:4rem;margin-bottom:1rem}.history-page .empty-state h2{margin-bottom:1rem;color:var(--dark-text)}.history-page .empty-state p{margin-bottom:2rem;color:var(--light-text)}.history-page .primary-btn{padding:.8rem 2rem;background-color:var(--primary-color);color:#fff;border:none;border-radius:5px;font-size:1rem;cursor:pointer;transition:background-color .3s}.history-page .primary-btn:hover{background-color:var(--secondary-color)}.history-page .history-list{display:flex;flex-direction:column;gap:1.5rem}.history-page .history-card{background-color:#fff;border-radius:10px;box-shadow:var(--card-shadow);overflow:hidden;transition:transform .3s,box-shadow .3s}.history-page .history-card:hover{transform:translateY(-5px);box-shadow:var(--card-hover-shadow)}.history-page .history-card.expanded{box-shadow:0 10px 20px #00000026}.history-page .card-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid var(--border-color)}.history-page .test-info h3{font-size:1.4rem;margin-bottom:.5rem;color:var(--dark-text)}.history-page .test-date{color:var(--light-text);font-size:.9rem}.history-page .score-circle{position:relative;width:80px;height:80px;border-radius:50%;background:conic-gradient(var(--score-color) 0% var(--score-percentage),#e0e0e0 var(--score-percentage) 100%);display:flex;flex-direction:column;align-items:center;justify-content:center}.history-page .score-circle:before{content:"";position:absolute;width:65px;height:65px;background-color:#fff;border-radius:50%}.history-page .score-text,.history-page .score-percentage{position:relative;z-index:1;text-align:center}.history-page .score-text{font-weight:700;font-size:1rem}.history-page .score-percentage{font-size:.8rem;color:var(--light-text)}.history-page 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