:root {
  --primary: #dc2626;
  --primary-dark: #b91c1c;
  --sidebar-bg: #111827;
  --sidebar-hover: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --info: #2563eb;
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0; background: #f3f4f6; color: #111827; font-size: 14px;
}
a { color: inherit; text-decoration: none; }

.admin-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px; background: var(--sidebar-bg); color: #e5e7eb; flex-shrink: 0;
  display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; left: 0; overflow-y: auto;
}
.sidebar .brand { padding: 20px 20px; font-size: 18px; font-weight: 700; color: #fff; border-bottom: 1px solid #1f2937; display:flex; align-items:center; gap:8px;}
.sidebar .brand span.badge { background: var(--primary); font-size: 10px; padding: 2px 6px; border-radius: 4px; }
.sidebar nav { padding: 12px 0; flex: 1; }
.sidebar .nav-group-label { padding: 14px 20px 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: #6b7280; }
.sidebar a.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 20px; color: #cbd5e1; font-size: 13.5px; border-left: 3px solid transparent;
}
.sidebar a.nav-item:hover { background: var(--sidebar-hover); color: #fff; }
.sidebar a.nav-item.active { background: var(--sidebar-hover); color: #fff; border-left-color: var(--primary); font-weight: 600; }
.sidebar .nav-icon { width: 18px; text-align: center; }
.sidebar .sidebar-footer { padding: 14px 20px; border-top: 1px solid #1f2937; font-size: 12px; color: #6b7280; }

.main { margin-left: 240px; flex: 1; display: flex; flex-direction: column; min-height: 100vh; }
.topbar {
  background: #fff; border-bottom: 1px solid var(--border); padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 10;
}
.topbar h1 { font-size: 18px; margin: 0; }
.topbar .user-menu { display: flex; align-items: center; gap: 12px; font-size: 13px; }
.topbar .role-badge { background: #fee2e2; color: #991b1b; padding: 2px 10px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.topbar .role-badge.manager { background: #dbeafe; color: #1e40af; }
.topbar .role-badge.staff { background: #f3f4f6; color: #374151; }

.content { padding: 24px; flex: 1; }

.card { background: #fff; border-radius: 10px; border: 1px solid var(--border); padding: 20px; margin-bottom: 20px; }
.card h2 { font-size: 15px; margin: 0 0 16px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card { background: #fff; border-radius: 10px; border: 1px solid var(--border); padding: 20px; }
.stat-card .label { font-size: 12.5px; color: var(--text-muted); margin-bottom: 6px; }
.stat-card .value { font-size: 26px; font-weight: 700; }
.stat-card .delta { font-size: 12px; margin-top: 6px; }
.stat-card .icon { width: 40px; height: 40px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; float: right; }

table.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.data-table th { text-align: left; padding: 10px 12px; background: #f9fafb; color: #374151; font-weight: 600; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data-table td { padding: 10px 12px; border-bottom: 1px solid #f1f3f5; vertical-align: middle; }
table.data-table tr:hover td { background: #fafafa; }
table.data-table img.thumb { width: 42px; height: 42px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 600; }
.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-muted { background: #f3f4f6; color: #4b5563; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 8px; font-size: 13.5px; font-weight: 600; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #fff; color: #374151; border-color: var(--border); }
.btn-secondary:hover { background: #f9fafb; }
.btn-danger { background: #fff; color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 13px; }
.form-group .hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
input[type=text], input[type=number], input[type=password], input[type=email], input[type=date], input[type=datetime-local],
select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13.5px; font-family: inherit; background: #fff;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.form-row.cols-3 { grid-template-columns: repeat(3, 1fr); }

.toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }
.toolbar .filters { display: flex; gap: 10px; flex-wrap: wrap; }
.filters input, .filters select { width: auto; min-width: 160px; }

.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13.5px; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-info { background: #dbeafe; color: #1e40af; }

.pagination { display: flex; gap: 6px; margin-top: 16px; }
.pagination a, .pagination span { padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; }
.pagination a:hover { background: #f9fafb; }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

.variant-row { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr 1fr auto; gap: 8px; align-items: center; margin-bottom: 8px; }
.spec-row { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 8px; align-items: center; margin-bottom: 8px; }
.remove-row-btn { background: #fee2e2; color: #991b1b; border: none; border-radius: 6px; width: 30px; height: 30px; cursor: pointer; }

.perm-table { width: 100%; border-collapse: collapse; }
.perm-table th, .perm-table td { padding: 10px; border-bottom: 1px solid var(--border); text-align: center; }
.perm-table td:first-child, .perm-table th:first-child { text-align: left; }

.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,#111827,#1f2937); }
.login-box { background: #fff; padding: 36px; border-radius: 14px; width: 380px; box-shadow: 0 20px 40px rgba(0,0,0,.3); }
.login-box h1 { font-size: 20px; margin: 0 0 4px; }
.login-box p.sub { color: var(--text-muted); font-size: 13px; margin: 0 0 24px; }

.thumb-preview { width: 70px; height: 70px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); }

@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); transition: .2s; z-index: 50; }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .form-row, .form-row.cols-3 { grid-template-columns: 1fr; }
}