:root{--bg-base: #0f1117;--bg-surface: #1a1d27;--bg-elevated: #242830;--bg-hover: #2a2e38;--text-primary: #f0f2f5;--text-secondary: #8b95a5;--text-muted: #5a6375;--border-color: rgba(255, 255, 255, .08);--accent: #3b82f6;--accent-hover: #2563eb;--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--sidebar-width: 220px;--header-height: 56px;--font: "Inter", system-ui, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:14px}body{font-family:var(--font);background:var(--bg-base);color:var(--text-primary);min-height:100vh;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}.admin-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-surface);border-right:1px solid var(--border-color);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-brand{height:var(--header-height);display:flex;align-items:center;padding:0 20px;font-size:1.1rem;font-weight:700;color:var(--accent);border-bottom:1px solid var(--border-color);gap:10px}.sidebar-nav{flex:1;padding:12px 8px;display:flex;flex-direction:column;gap:2px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:6px;color:var(--text-secondary);font-weight:500;transition:all .15s;font-size:.95rem}.sidebar-link:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-link.active{background:#3b82f61f;color:var(--accent)}.sidebar-link i{width:18px;text-align:center;font-size:.9rem}.sidebar-footer{padding:12px 8px;border-top:1px solid var(--border-color)}.main-content{flex:1;margin-left:var(--sidebar-width);padding:24px 32px;min-height:100vh}.card{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:8px;padding:20px 24px}.card-title{font-size:1rem;font-weight:600;margin-bottom:16px;color:var(--text-primary)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:8px;padding:20px}.stat-label{font-size:.85rem;color:var(--text-secondary);margin-bottom:6px}.stat-value{font-size:2rem;font-weight:700}.chart-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}.chart-card{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:8px;padding:20px}.chart-card h3{font-size:.95rem;margin-bottom:12px;color:var(--text-secondary)}@media(max-width:900px){.chart-grid{grid-template-columns:1fr}}.table-wrapper{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border-color)}th{font-size:.8rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}td{font-size:.9rem;color:var(--text-secondary)}tr:hover td{background:var(--bg-hover)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:6px 14px;font-size:.85rem;font-weight:500;border-radius:6px;border:1px solid transparent;cursor:pointer;transition:all .15s;font-family:var(--font)}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover)}.btn-danger{background:#ef44441f;color:var(--danger);border-color:#ef44444d}.btn-danger:hover{background:#ef444433}.btn-success{background:#22c55e1f;color:var(--success);border-color:#22c55e4d}.btn-success:hover{background:#22c55e33}.btn-warning{background:#f59e0b1f;color:var(--warning);border-color:#f59e0b4d}.btn-warning:hover{background:#f59e0b33}.btn-sm{padding:4px 10px;font-size:.8rem}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:var(--border-color)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-size:.85rem;color:var(--text-secondary);font-weight:500}.form-group input,.form-group textarea,.form-group select{width:100%;padding:8px 12px;background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.9rem;font-family:inherit}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.pagination{display:flex;justify-content:center;align-items:center;gap:6px;padding:16px 0}.pagination button{padding:6px 12px;border:1px solid var(--border-color);background:var(--bg-surface);color:var(--text-secondary);border-radius:4px;cursor:pointer;font-size:.85rem}.pagination button:hover:not(:disabled){background:var(--bg-hover)}.pagination button:disabled{opacity:.3;cursor:default}.pagination button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh}.login-card{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:12px;padding:40px;width:100%;max-width:400px}.login-title{text-align:center;font-size:1.5rem;font-weight:700;margin-bottom:8px}.login-subtitle{text-align:center;color:var(--text-muted);margin-bottom:28px;font-size:.9rem}.login-error{background:#ef44441a;color:var(--danger);padding:10px;border-radius:6px;margin-bottom:16px;font-size:.85rem;text-align:center}.login-btn{width:100%;padding:12px;font-size:1rem}.alert{padding:10px 14px;border-radius:6px;margin-bottom:16px;font-size:.85rem}.alert-success{background:#22c55e1a;border:1px solid rgba(34,197,94,.3);color:var(--success)}.alert-danger{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--danger)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-title{font-size:1.3rem;font-weight:700}.badge{display:inline-flex;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:600}.badge-danger{background:#ef444426;color:var(--danger)}.badge-success{background:#22c55e26;color:var(--success)}.badge-warning{background:#f59e0b26;color:var(--warning)}.avatar{width:32px;height:32px;border-radius:50%;object-fit:cover}.flex{display:flex}.gap-2{gap:8px}.gap-3{gap:12px}.items-center{align-items:center}.justify-between{justify-content:space-between}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.text-muted{color:var(--text-muted)}.text-center{text-align:center}@media(max-width:768px){.sidebar{width:60px}.sidebar-brand span,.sidebar-link span{display:none}.sidebar-link{justify-content:center;padding:12px}.main-content{margin-left:60px;padding:16px}}