*{margin:0;padding:0;box-sizing:border-box}
body{background:#0f172a;color:#e2e8f0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
a{text-decoration:none;color:inherit}
.layout{display:flex;min-height:100vh}
.sidebar{width:240px;background:#1e293b;border-right:1px solid #334155;padding:24px 0;position:fixed;height:100vh}
.sidebar h2{color:#fff;padding:0 24px 20px;font-size:18px}
.sidebar ul{list-style:none}
.sidebar ul li a{display:block;padding:12px 24px;color:#cbd5e1;border-radius:6px;margin:4px 12px}
.sidebar ul li a:hover{background:#2563eb;color:#fff}
.sidebar ul li a.active{background:#1d4ed8;color:#fff;font-weight:500}
.main{flex:1;margin-left:240px;padding:32px}
.card{background:#1e293b;border-radius:12px;padding:24px;margin-bottom:20px;border:1px solid #334155}
.card h3{margin-bottom:16px;font-size:18px;color:#fff}
.table{width:100%;border-collapse:collapse;margin-top:12px}
.table th,.table td{padding:12px 16px;text-align:left;border-bottom:1px solid #334155}
.table th{color:#94a3b8}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:6px;border:none;cursor:pointer;font-size:14px}
.btn-primary{background:#2563eb;color:#fff}
.btn-danger{background:#dc2626;color:#fff}
.btn-success{background:#059669;color:#fff}
.btn-sm{padding:6px 10px;font-size:12px}
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:8px;color:#cbd5e1}
.form-control{width:100%;padding:10px 12px;background:#0f172a;border:1px solid #475569;border-radius:6px;color:#fff}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media(max-width:768px){.grid{grid-template-columns:1fr}}