:root{
  --primary:#1e3a5f; --primary-light:#2c5282; --accent:#c9a227;
  --bg:#f4f6f9; --card:#ffffff; --text:#1a202c; --muted:#6b7280;
  --success:#16a34a; --danger:#dc2626; --warning:#d97706; --border:#e5e7eb;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{text-decoration:none;color:inherit}

/* Layout */
.app{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--primary);color:#fff;flex-shrink:0;padding:18px 0}
.sidebar .brand{padding:0 18px 18px;font-size:18px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:10px}
.sidebar .brand span{color:var(--accent)}
.sidebar nav a{display:block;padding:10px 18px;color:#cbd5e1;font-size:13.5px;border-left:3px solid transparent}
.sidebar nav a:hover,.sidebar nav a.active{background:rgba(255,255,255,.08);color:#fff;border-left-color:var(--accent)}
.main{flex:1;display:flex;flex-direction:column}
.topbar{background:#fff;border-bottom:1px solid var(--border);padding:12px 24px;display:flex;justify-content:space-between;align-items:center}
.content{padding:24px}

/* Cards / stats */
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:900px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px}
.stat-card .label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.stat-card .value{font-size:26px;font-weight:700;margin-top:6px;color:var(--primary)}
.card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:20px;margin-bottom:20px}

/* Table */
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:13.5px}
th{background:#f8fafc;color:var(--muted);font-weight:600;text-transform:uppercase;font-size:11.5px}
tr:hover td{background:#fafbfc}

/* Badges */
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:11.5px;font-weight:600}
.badge-active{background:#dcfce7;color:var(--success)}
.badge-suspended{background:#fee2e2;color:var(--danger)}
.badge-expired{background:#fef3c7;color:var(--warning)}

/* Forms & buttons */
.form-group{margin-bottom:14px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:5px;color:#374151}
input,select{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:6px;font-size:13.5px}
input:focus,select:focus{outline:none;border-color:var(--primary-light)}
.btn{display:inline-block;padding:8px 16px;border-radius:6px;font-size:13.5px;font-weight:600;border:none;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-light)}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-danger{background:#fee2e2;color:var(--danger)}
.btn-warning{background:#fef3c7;color:var(--warning)}
.btn-outline{background:#fff;border:1px solid var(--border);color:var(--text)}
.actions{display:flex;gap:6px;flex-wrap:wrap}

.alert{padding:10px 14px;border-radius:6px;margin-bottom:16px;font-size:13.5px}
.alert-success{background:#dcfce7;color:var(--success)}
.alert-error{background:#fee2e2;color:var(--danger)}

/* Login page */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--primary-light))}
.login-box{background:#fff;width:360px;padding:32px;border-radius:10px}
.login-box h1{font-size:20px;color:var(--primary);margin-bottom:4px}
.login-box p{color:var(--muted);font-size:13px;margin-bottom:20px}
.login-box .btn{width:100%;padding:11px}