@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--primary: #6366f1;--primary-hover: #4f46e5;--bg-dark: #0f172a;--bg-card: #1e293b;--text-main: #f8fafc;--text-muted: #94a3b8;--border: #334155;--success: #22c55e;--warning: #eab308;--danger: #ef4444}body{margin:0;font-family:Inter,sans-serif;background-color:var(--bg-dark);color:var(--text-main);-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s;border:none;outline:none}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-danger{background-color:var(--danger);color:#fff}.btn-secondary{background-color:var(--bg-card);border:1px solid var(--border);color:var(--text-main)}.btn-secondary:hover{background-color:var(--border)}.card{background-color:var(--bg-card);border-radius:.75rem;padding:1.5rem;border:1px solid var(--border)}.input{width:100%;padding:.75rem;border-radius:.5rem;background-color:#020617;border:1px solid var(--border);color:#fff;margin-bottom:1rem;box-sizing:border-box}.input:focus{border-color:var(--primary);outline:none}.label{display:block;margin-bottom:.5rem;color:var(--text-muted);font-size:.875rem}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:1rem;text-align:left;border-bottom:1px solid var(--border)}.table th{color:var(--text-muted);font-weight:500}.badge{padding:.25rem .5rem;border-radius:9999px;font-size:.75rem;font-weight:600}.badge-easy{background:#22c55e33;color:#4ade80}.badge-medium{background:#eab30833;color:#facc15}.badge-hard{background:#ef444433;color:#f87171}.react-calendar-heatmap text{font-size:10px;fill:#aaa}.react-calendar-heatmap 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h1{font-size:2rem;font-weight:700;margin-bottom:.5rem}.admin-subtitle{color:var(--text-muted)}.admin-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:2rem}.stat-card{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1.5rem;text-align:center}.stat-card.pending{border-color:#f59e0b}.stat-card.approved{border-color:#10b981}.stat-number{display:block;font-size:2.5rem;font-weight:700;color:#fff}.stat-label{color:var(--text-muted);font-size:.875rem}.admin-filters{display:flex;gap:.5rem;margin-bottom:1.5rem}.filter-btn{padding:.5rem 1rem;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-muted);cursor:pointer;transition:all .2s}.filter-btn:hover{border-color:var(--primary);color:#fff}.filter-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.users-table-container{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;overflow:hidden}.users-table{width:100%;border-collapse:collapse}.users-table th,.users-table td{padding:1rem;text-align:left;border-bottom:1px solid var(--border)}.users-table th{background:#ffffff0d;font-weight:600;color:var(--text-muted);font-size:.875rem;text-transform:uppercase}.users-table tbody tr:hover{background:#ffffff05}.pending-row{background:#f59e0b0d}.role-select{padding:.375rem .75rem;border-radius:6px;border:1px solid var(--border);background:var(--bg);color:#fff;cursor:pointer}.role-select:disabled{opacity:.5;cursor:not-allowed}.status-badge{padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:500}.status-badge.approved{background:#10b98133;color:#10b981}.status-badge.pending{background:#f59e0b33;color:#f59e0b}.actions-cell{display:flex;gap:.5rem;flex-wrap:wrap}.action-btn{padding:.375rem .75rem;border-radius:6px;font-size:.75rem;font-weight:500;cursor:pointer;border:none;transition:all .2s}.action-btn.approve{background:#10b981;color:#fff}.action-btn.approve:hover{background:#059669}.action-btn.reject{background:#f59e0b;color:#fff}.action-btn.reject:hover{background:#d97706}.action-btn.delete{background:#ef4444;color:#fff}.action-btn.delete:hover{background:#dc2626}.admin-loading,.admin-error{text-align:center;padding:3rem;color:var(--text-muted)}.admin-error{color:#ef4444}