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cubic-bezier(.4,0,.2,1);border-radius:24px}.settings-slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background-color:#fff;transition:.25s cubic-bezier(.4,0,.2,1);border-radius:50%;box-shadow:0 1px 3px #0003}input:checked+.settings-slider{background-color:var(--color-accent, #FD6A01)}input:checked+.settings-slider:before{transform:translate(20px)}@media (max-width: 640px){.account-settings-container{padding:16px}.settings-card{padding:18px}.settings-toggle-item{flex-direction:column;align-items:flex-start;gap:12px}.settings-toggle-info,.settings-input-wrapper,.password-strength-container{max-width:100%}}.avatar-container{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;overflow:hidden;flex-shrink:0;color:#fff;font-weight:600;-webkit-user-select:none;user-select:none;box-shadow:0 2px 4px #0000000d}.avatar-image{width:100%;height:100%;object-fit:cover}.avatar-initials{display:flex;align-items:center;justify-content:center;width:100%;height:100%;text-transform:uppercase}.teacher-leaderboard-container{padding:2rem;display:flex;flex-direction:column;gap:2rem;width:100%}.leaderboard-header-section{display:flex;flex-direction:column;gap:1.5rem}.leaderboard-title{display:flex;flex-direction:column;gap:.5rem}.leaderboard-title h1{font-size:2rem;font-weight:700;color:var(--color-text-primary, #1e293b);margin:0}.leaderboard-title p{color:var(--color-text-secondary, #64748b);font-size:1.1rem;margin:0}.leaderboard-filters{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;background:var(--color-surface, #ffffff);padding:1rem;border-radius:12px;box-shadow:0 4px 6px -1px #0000000d;border:1px solid var(--color-border, #e2e8f0)}.filter-group{display:flex;align-items:center;gap:.75rem}.filter-label{font-weight:600;color:var(--color-text-secondary, #64748b);font-size:.95rem}.time-filter-pills{display:flex;gap:.5rem;background:var(--color-surface-2, #f1f5f9);padding:.25rem;border-radius:8px}.time-filter-pill{padding:.5rem 1rem;border:none;background:transparent;border-radius:6px;font-size:.9rem;font-weight:500;color:var(--color-text-secondary, #64748b);cursor:pointer;transition:all .2s ease}.time-filter-pill.active{background:var(--color-primary, #1a73e8);color:#fff;box-shadow:0 2px 4px #1a73e833}.time-filter-pill:hover:not(.active){background:var(--color-border, #e2e8f0)}.podium-container{display:flex;align-items:flex-end;justify-content:center;gap:1.5rem;margin:2rem 0;min-height:250px}.podium-card{background:var(--color-surface, #ffffff);border-radius:16px;box-shadow:0 10px 15px -3px #0000001a;border:1px solid var(--color-border, #e2e8f0);padding:1.5rem;display:flex;flex-direction:column;align-items:center;text-align:center;transition:transform .3s ease;width:200px;position:relative}.podium-card:hover{transform:translateY(-5px)}.podium-card.rank-1{z-index:3;border-color:#fbbf24;box-shadow:0 10px 25px -5px #fbbf244d;padding-bottom:2.5rem}.podium-card.rank-2{z-index:2;padding-bottom:2rem;border-color:#94a3b8}.podium-card.rank-3{z-index:1;padding-bottom:1.5rem;border-color:#b45309}.podium-medal{font-size:2.5rem;position:absolute;top:-20px;background:var(--color-surface, #ffffff);border-radius:50%;width:50px;height:50px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 6px #0000001a}.podium-avatar{width:80px;height:80px;border-radius:50%;object-fit:cover;margin-top:1rem;margin-bottom:1rem;border:3px solid var(--color-primary, #1a73e8)}.rank-1 .podium-avatar{border-color:#fbbf24}.rank-2 .podium-avatar{border-color:#94a3b8}.rank-3 .podium-avatar{border-color:#b45309}.podium-name{font-size:1.1rem;font-weight:700;color:var(--color-text-primary, #1e293b);margin-bottom:.25rem}.podium-score{font-size:1.25rem;font-weight:800;color:var(--color-primary, #1a73e8)}.podium-badge{margin-top:.75rem;font-size:.8rem;background:var(--color-surface-2, #f1f5f9);padding:.25rem .75rem;border-radius:12px;color:var(--color-text-secondary, #64748b);font-weight:600}.insights-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.insight-card{background:var(--color-surface, #ffffff);padding:1.5rem;border-radius:12px;border:1px solid var(--color-border, #e2e8f0);box-shadow:0 2px 4px #00000005;display:flex;flex-direction:column;gap:.5rem}.insight-label{font-size:.9rem;color:var(--color-text-secondary, #64748b);font-weight:500;text-transform:uppercase;letter-spacing:.5px}.insight-value{font-size:1.5rem;font-weight:700;color:var(--color-text-primary, #1e293b)}.insight-sub{font-size:.85rem;color:var(--color-primary, #1a73e8);font-weight:500}.leaderboard-table-container{background:var(--color-surface, 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#f8fafc)}.student-cell{display:flex;align-items:center;gap:1rem}.student-avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;background:var(--color-border, #e2e8f0)}.student-info{display:flex;flex-direction:column}.student-name{font-weight:600;color:var(--color-text-primary, #1e293b)}.student-email{font-size:.85rem;color:var(--color-text-secondary, #64748b)}.rank-cell{font-weight:700;font-size:1.1rem;color:var(--color-text-primary, #1e293b);text-align:center;width:60px}.score-cell{font-weight:700;color:var(--color-primary, #1a73e8);font-size:1.05rem}.trend-cell{display:flex;align-items:center;gap:.25rem;font-weight:600}.trend-up{color:#16a34a}.trend-down{color:#dc2626}.trend-stable{color:#64748b}.achievement-badge{display:inline-flex;align-items:center;padding:.25rem .75rem;border-radius:12px;font-size:.8rem;font-weight:600;background:var(--color-accent-light, #fff7ed);color:var(--color-accent, #ea580c);border:1px solid 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