:root{--primary: #8b5cf6;--primary-light: #a78bfa;--primary-glow: rgba(139, 92, 246, .4);--bg: #030712;--card-bg: rgba(17, 24, 39, .7);--text: #f3f4f6;--text-muted: #9ca3af;--accent: #10b981;--warning: #f59e0b;--danger: #ef4444;--glass: rgba(255, 255, 255, .03);--border: rgba(255, 255, 255, .08);--sidebar-width: 320px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Outfit,sans-serif;background-color:var(--bg);background-image:radial-gradient(at 0% 0%,rgba(139,92,246,.12) 0px,transparent 40%),radial-gradient(at 100% 100%,rgba(16,185,129,.08) 0px,transparent 40%);color:var(--text);height:100vh;display:flex;overflow:hidden}aside{width:var(--sidebar-width);background:#111827f2;border-right:1px solid var(--border);display:flex;flex-direction:column;padding:2rem 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#ef44444d;transform:translateY(-2px)}.tabs{display:flex;gap:.5rem;background:#0003;padding:.4rem;border-radius:12px;margin-bottom:1.5rem}.tab{flex:1;padding:.6rem;text-align:center;border-radius:8px;font-size:.85rem;font-weight:600;cursor:pointer;transition:.2s;color:var(--text-muted)}.tab.active{background:var(--primary);color:#fff}.leaderboard-list{display:flex;flex-direction:column;gap:.75rem;max-height:500px;overflow-y:auto;padding-right:.5rem}.leaderboard-item{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;background:var(--glass);border-radius:16px;border:1px solid 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.8rem;border-radius:8px;cursor:pointer;transition:.2s}.btn-logout:hover{color:var(--danger);border-color:#ef444466;background:#ef44440d}.record-checkbox{width:18px;height:18px;accent-color:var(--primary);cursor:pointer;border-radius:6px;border:1px solid var(--border);transition:transform .15s ease}.record-checkbox:hover{transform:scale(1.1)}.timeline-table-container{max-height:250px;overflow-y:auto;border:1px solid var(--border);border-radius:16px;background:#0006;margin-top:1rem;box-shadow:inset 0 4px 12px #0000004d}.timeline-table{width:100%;border-collapse:collapse;font-size:.85rem;text-align:left}.timeline-table th,.timeline-table td{padding:.75rem 1rem;border-bottom:1px solid var(--border)}.timeline-table th{background:#111827e6;color:var(--text-muted);font-weight:700;text-transform:uppercase;font-size:.7rem;letter-spacing:.05em;position:sticky;top:0;z-index:1;backdrop-filter:blur(10px)}.timeline-table tr:last-child td{border-bottom:none}.timeline-table 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.modal-card{transform:scale(1)}.modal-header{display:flex;flex-direction:column;align-items:center;gap:.75rem}.modal-icon{font-size:2.5rem;line-height:1}.modal-header h3{font-size:1.35rem;font-weight:700;color:var(--text)}.modal-body{font-size:.95rem;color:var(--text-muted);line-height:1.6;margin:.5rem 0 1.5rem}.modal-footer{display:flex;justify-content:center;gap:1rem}.custom-select-container{position:relative;width:100%}.custom-select-trigger{display:flex;justify-content:space-between;align-items:center;width:100%;background:#0006;border:1px solid var(--border);border-radius:12px;padding:.9rem 1.2rem;color:#fff;font-size:.95rem;cursor:pointer;transition:all .2s ease;user-select:none}.custom-select-container:hover .custom-select-trigger{border-color:var(--primary-light)}.custom-select-container.open .custom-select-trigger{border-color:var(--primary);box-shadow:0 0 0 4px #8b5cf61a}.custom-select-arrow{width:14px;height:9px;background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg 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