:root {
  --admin-bg: #f4f6fb;
  --admin-surface: #ffffff;
  --admin-ink: #151d36;
  --admin-muted: #6f7690;
  --admin-brand: #1f5fff;
  --admin-border: #e3e7f3;
  --admin-radius: 14px;
}

body {
  background: var(--admin-bg);
  color: var(--admin-ink);
}

.card {
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  box-shadow: 0 8px 20px rgba(20, 32, 72, 0.06);
}

.card-header {
  background: linear-gradient(180deg, #ffffff 0%, #f8faff 100%);
  border-bottom: 1px solid var(--admin-border);
}

.table thead th {
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--admin-muted);
}

.form-control,
.form-control-user {
  border-radius: 10px !important;
}

.btn-primary {
  background-color: var(--admin-brand);
  border-color: var(--admin-brand);
}

.card h3 {
  font-weight: 700;
  margin-bottom: 0;
}

.sidebar .nav-item .nav-link span {
  font-weight: 600;
}

.table td, .table th {
  vertical-align: middle;
}

@media (max-width: 768px) {
  .container-fluid {
    padding: 0.75rem;
  }

  .table-responsive {
    font-size: 0.875rem;
  }
}