:root {
  --bw-bg: #0a0a0a;
  --bw-surface: #111111;
  --bw-elevated: #161616;
  --bw-border: rgba(255, 255, 255, 0.08);
  --bw-text: #f5f5f5;
  --bw-muted: #9ca3af;
  --bw-accent: #ffffff;
}

.admin-body {
  background: var(--bw-bg);
  color: var(--bw-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.admin-wrapper {
  background: radial-gradient(1200px 600px at 10% -10%, rgba(255, 255, 255, 0.06), transparent),
    radial-gradient(900px 500px at 90% 0%, rgba(255, 255, 255, 0.04), transparent),
    var(--bw-bg);
}

.admin-sidebar {
  width: 260px;
  background: linear-gradient(180deg, var(--bw-surface) 0%, #0d0d0d 100%);
  border-right: 1px solid var(--bw-border);
  min-height: 100vh;
}

.admin-sidebar .nav-link {
  color: var(--bw-muted);
  padding: 0.55rem 0.85rem;
}

.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
  color: var(--bw-text);
  background: rgba(255, 255, 255, 0.06);
}

.admin-main {
  background: transparent;
}

.admin-topbar {
  backdrop-filter: blur(8px);
}

.admin-content {
  background: transparent;
}

.admin-footer {
  background: rgba(0, 0, 0, 0.25);
}

.card-bw {
  background: var(--bw-elevated);
  border: 1px solid var(--bw-border);
  color: var(--bw-text);
}

.table-bw {
  --bs-table-bg: transparent;
  --bs-table-color: var(--bw-text);
  --bs-table-border-color: var(--bw-border);
}

.table-bw thead th {
  color: var(--bw-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-card {
  border: 1px solid var(--bw-border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
}

.stat-card .label {
  color: var(--bw-muted);
  font-size: 0.8rem;
}

.stat-card .value {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.form-control,
.form-select {
  background-color: #0f0f0f;
  border-color: var(--bw-border);
  color: var(--bw-text);
}

.form-control:focus,
.form-select:focus {
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.08);
  background-color: #0f0f0f;
  color: var(--bw-text);
}

.form-label {
  color: var(--bw-muted);
  font-size: 0.85rem;
}

.btn-light {
  background: #ffffff;
  border-color: #ffffff;
  color: #000000;
}

.btn-outline-light:hover {
  background: #ffffff;
  color: #000000;
}

@media (min-width: 992px) {
  .admin-sidebar {
    display: block;
  }
}

@media (max-width: 991.98px) {
  .admin-sidebar {
    display: none;
  }
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background: radial-gradient(800px 400px at 50% 0%, rgba(255, 255, 255, 0.08), transparent),
    var(--bw-bg);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bw-elevated);
  border: 1px solid var(--bw-border);
  border-radius: 1rem;
  padding: 2rem;
}

@media print {
  .admin-sidebar,
  .admin-topbar,
  .admin-footer,
  .btn,
  a[href]:after {
    display: none !important;
  }
  .admin-body,
  .admin-wrapper,
  .admin-main,
  .admin-content {
    background: #fff !important;
    color: #000 !important;
  }
  .card-bw,
  #invoice-section {
    border: 1px solid #ccc !important;
  }
}