:root {
  --brand: #1f4e79;
  --brand-dark: #163a5c;
  --bs-body-font-family: 'Sarabun', system-ui, sans-serif;
}
body { background: #f4f6f9; font-size: 15px; }
.bg-brand { background: var(--brand) !important; }
.btn-primary { --bs-btn-bg: var(--brand); --bs-btn-border-color: var(--brand); --bs-btn-hover-bg: var(--brand-dark); --bs-btn-hover-border-color: var(--brand-dark); }

@media (min-width: 992px) {
  .sidebar { width: 250px; flex: 0 0 250px;min-height: 100vh; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; }
}
.main-content { min-width: 0; }
.sidebar .offcanvas-body, .sidebar { display: flex; flex-direction: column; }
.sidebar .nav-link { color: rgba(255,255,255,.8); border-radius: .4rem; margin-bottom: 2px; }
.sidebar .nav-link:hover { color: #fff; background: rgba(255,255,255,.1); }
.sidebar .nav-link.active { color: var(--brand); background: #fff; font-weight: 600; }

.card { border: 0; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.stat-card .stat-icon { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; font-size: 1.4rem; }
.table > :not(caption) > * > * { vertical-align: middle; }
.page-title { font-weight: 700; color: #1d2b3a; }
.login-wrap { min-height: 100vh; display: grid; place-items: center; background: linear-gradient(135deg, var(--brand), #2e86c1); }
.login-card { width: 100%; max-width: 400px; }
.dl-grid dt { color: #6c757d; font-weight: 500; }
.perm-group { border-left: 3px solid var(--brand); }

.sidebar .nav-heading { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; opacity: .6; padding: .9rem .9rem .3rem; }
.sidebar { overflow-y: auto; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-tight td, .table-tight th { padding: .3rem .4rem; }
@media print {
  .sidebar, .navbar, .no-print, .alert { display: none !important; }
  body { background: #fff; font-size: 13px; }
  .main-content { padding: 0 !important; }
  .card { box-shadow: none; }
  .page-break { page-break-after: always; }
}