:root{
  --bg:#f5f7fb;
  --card:#fff;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --primary:#2563eb;
  --danger:#dc2626;
  --success:#16a34a;
  --warning:#d97706;
  --purple:#7c3aed;
  --gray:#6b7280;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}
.layout{display:flex;min-height:100vh}
.sidebar{width:250px;background:#0f172a;color:#fff;padding:18px 14px;position:sticky;top:0;height:100vh;overflow:auto}
.brand{font-size:20px;font-weight:700;margin-bottom:18px}
.nav a{display:block;padding:10px 12px;border-radius:10px;margin-bottom:6px;color:#dbeafe}
.nav a.active,.nav a:hover{background:#1e293b;color:#fff}
.main{flex:1;padding:20px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 5px 20px rgba(15,23,42,.04)}
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.stat .label{color:var(--muted);font-size:14px}
.stat .value{font-size:30px;font-weight:700;margin-top:8px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:10px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:#f8fafc;text-align:left;font-size:14px}
.form-row{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:12px}
.col-12{grid-column:span 12}
.col-9{grid-column:span 9}
.col-8{grid-column:span 8}
.col-6{grid-column:span 6}
.col-4{grid-column:span 4}
.col-3{grid-column:span 3}
.col-2{grid-column:span 2}
label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
input,select,textarea,button{font:inherit}
input[type=text],input[type=password],input[type=date],input[type=number],input[type=time],select,textarea{
  width:100%;padding:10px 12px;border:1px solid #cbd5e1;border-radius:10px;background:#fff
}
textarea{min-height:100px;resize:vertical}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:10px;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff}
.btn-secondary{background:#fff;border-color:#cbd5e1}
.btn-danger{background:var(--danger);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn-warning{background:var(--warning);color:#fff}
.btn-purple{background:var(--purple);color:#fff}
.btn-sm{padding:6px 10px;font-size:13px}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.alert{padding:12px 14px;border-radius:12px;margin-bottom:16px}
.alert-success{background:#ecfdf5;color:#166534;border:1px solid #bbf7d0}
.alert-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge-green{background:#dcfce7;color:#166534}
.badge-red{background:#fee2e2;color:#991b1b}
.badge-yellow{background:#fef3c7;color:#92400e}
.badge-purple{background:#ede9fe;color:#6d28d9}
.badge-gray{background:#e5e7eb;color:#374151}
.login-wrap{max-width:420px;margin:6vh auto}
.kicker{font-size:13px;color:var(--muted)}
.scan-box{padding:25px;text-align:center}
.scan-result{margin-top:12px;padding:16px;border-radius:14px}
.scan-ok{background:#ecfdf5;border:1px solid #bbf7d0}
.scan-error{background:#fef2f2;border:1px solid #fecaca}
.small{font-size:13px;color:var(--muted)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
@media (max-width: 980px){
  .layout{display:block}
  .sidebar{width:100%;height:auto;position:relative}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  [class^="col-"]{grid-column:span 1}
}