:root {
  --primary-color: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --border-color: #e2e8f0;
  --border-radius: 0.5rem;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  min-height: 100vh;
}

/* Card overrides */
.card {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.card-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

/* Table styling */
.table {
  color: var(--text-main);
  vertical-align: middle;
}

.table th {
  font-size: 0.825rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background-color: #f8fafc;
  border-bottom: 1px solid var(--border-color);
}

.table-hover tbody tr:hover {
  background-color: #f1f5f9;
}

/* Alphabet pagination */
.alphabet-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.alphabet-nav .nav-link {
  display: inline-block;
  min-width: 2rem;
  text-align: center;
  padding: 0.35rem 0.5rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.875rem;
  background-color: #ffffff;
  text-decoration: none;
}

.alphabet-nav .nav-link:hover {
  background-color: #f1f5f9;
  border-color: #cbd5e1;
  color: var(--primary-color);
}

.alphabet-nav .nav-link.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #ffffff;
}

/* Detail list (dl) for view pages */
.client-detail-list dt {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
}

.client-detail-list dd {
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

/* Badges */
.badge-id-valid {
  background-color: #10b981;
  color: #ffffff;
}

.badge-id-invalid {
  background-color: #ef4444;
  color: #ffffff;
}