:root{--bg:#f5f7fb;--panel:#fff;--muted:#667;--accent:#2563eb;--danger:#ef4444;}*{box-sizing:border-box}body{font-family:Inter, Arial;margin:0;background:var(--bg);color:#1f2937}.app{display:flex;min-height:100vh}.sidebar{width:240px;background:#0f1724;color:#fff;padding:18px 14px;display:flex;flex-direction:column}.brand a{color:#fff;text-decoration:none;font-weight:700;font-size:18px}.sidebar nav{margin-top:18px;flex:1}.sidebar ul{list-style:none;padding:0;margin:0}.sidebar li{margin:6px 0}.sidebar a{display:block;padding:10px;border-radius:6px;color:#cbd5e1;text-decoration:none}.sidebar li.active a,.sidebar a:hover{background:#0b1220;color:#fff}.sidebar-foot{font-size:12px;color:#94a3b8;margin-top:12px}.main{flex:1;display:flex;flex-direction:column}.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:linear-gradient(90deg,#fff,#f8fafc);border-bottom:1px solid #e6eef7}.topbar-left h1{margin:0 12px}.topbar-right{display:flex;align-items:center;gap:12px}.topbar .search input{padding:8px 10px;border-radius:6px;border:1px solid #e6eef7}.topbar .user{display:flex;align-items:center;gap:8px}.topbar .user img{width:32px;height:32px;border-radius:6px}.content{padding:20px;flex:1;overflow:auto}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}.card{background:var(--panel);padding:16px;border-radius:8px;box-shadow:0 1px 3px rgba(16,24,40,0.04)}.card h3{margin:0;font-size:13px;color:var(--muted)}.card .big{font-size:26px;margin-top:8px;font-weight:700}.panel{background:var(--panel);padding:16px;border-radius:8px;box-shadow:0 1px 4px rgba(2,6,23,0.04);margin-bottom:16px}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:10px 8px;border-bottom:1px solid #f1f5f9;text-align:left;font-size:13px}.tag{display:inline-block;padding:4px 8px;border-radius:6px;background:#eef2ff;color:#1e3a8a;font-size:12px}.btn{display:inline-block;padding:8px 10px;border-radius:6px;background:var(--accent);color:#fff;text-decoration:none;border:none;cursor:pointer}.btn.outline{background:transparent;color:var(--accent);border:1px solid #e6eef7}.btn.small{padding:6px 8px;font-size:13px}.btn.tiny{padding:4px 6px;font-size:12px}.btn.danger{background:var(--danger)}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.form{max-width:1100px}.form-row{margin-bottom:12px;display:flex;flex-direction:column}.form-row.two{display:flex;gap:12px}.form-row label{font-size:13px;color:var(--muted);margin-bottom:6px}.form-row input,.form-row select,.form-row textarea{padding:10px;border-radius:6px;border:1px solid #e6eef7}.upload-box{padding:18px;border:1px dashed #e6eef7;border-radius:8px;text-align:center;color:#667}.actions{display:flex;gap:10px}.pagination{display:flex;gap:6px;align-items:center;margin-top:10px}.page-btn{padding:6px 10px;border-radius:6px;border:1px solid #e6eef7;background:transparent;cursor:pointer}.page-btn.active{background:#eef2ff;border-color:#c7ddff}.footer{padding:12px 20px;font-size:13px;color:#6b7280;background:transparent}.muted{color:#94a3b8;font-size:13px}.danger{color:var(--danger)}@media (max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}.sidebar{display:none}.topbar-left h1{font-size:16px}}