/* ============================================================
   Design System reference page specific styles
   ============================================================ */

.ds-header {
  background: var(--color-navy);
  padding: 36px var(--space-2xl);
  color: var(--text-on-dark);
}

.ds-header-brand {
  font-size: 22px;
  font-weight: var(--fw-medium);
  letter-spacing: -0.4px;
  margin-bottom: 4px;
}

.ds-header-desc {
  font-size: var(--fs-sm);
  color: var(--text-on-dark-dim);
}

.ds-header-tags {
  display: flex;
  gap: 8px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.ds-header-tag {
  background: rgba(255,255,255,0.06);
  color: var(--text-on-dark-muted);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-2xs);
}

.ds-header-tag.success {
  background: rgba(0, 201, 167, 0.18);
  color: var(--color-teal);
}

.ds-container {
  padding: var(--space-2xl);
  max-width: var(--max-width-content);
  margin: 0 auto;
}

.ds-toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 18px 22px;
  margin-bottom: 36px;
}

.ds-toc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px 16px;
  font-size: var(--fs-xs);
}

.ds-toc-grid a { color: var(--text-primary); }
.ds-toc-grid a:hover { color: var(--color-orange); }

.ds-section {
  margin-bottom: 48px;
}

.ds-section-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.ds-section-number {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.ds-section-title {
  font-size: 22px;
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  letter-spacing: -0.4px;
  margin: 0;
}

.ds-section-desc {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-bottom: 18px;
}

.ds-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 22px;
  margin-bottom: 14px;
}

.ds-block-title {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  font-weight: var(--fw-medium);
  margin-bottom: 14px;
}

.ds-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.ds-color-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.ds-color-card {
  padding: 18px;
  border-radius: var(--radius-card);
  min-height: 130px;
}

.ds-color-swatch-small {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1);
  margin-bottom: 14px;
}

.ds-color-role {
  font-size: var(--fs-2xs);
}

.ds-color-name {
  font-weight: var(--fw-medium);
  font-size: 15px;
  margin-top: 4px;
}

.ds-color-hex {
  font-size: var(--fs-2xs);
  font-family: var(--font-mono);
  margin-top: 6px;
}

.ds-color-usage {
  font-size: 10px;
  margin-top: 8px;
  line-height: 1.4;
}

.ds-derived-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

.ds-derived-swatch {
  height: 36px;
  border-radius: 7px;
  margin-bottom: 6px;
}

.ds-typo-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light);
}
.ds-typo-row:last-child { border-bottom: none; padding-bottom: 0; }

.ds-typo-sample { flex: 1; }
.ds-typo-spec {
  font-size: var(--fs-2xs);
  font-family: var(--font-mono);
  color: var(--text-muted);
  min-width: 180px;
}

.ds-spacing-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ds-spacing-bar {
  height: 18px;
  background: var(--color-orange);
}

.ds-spacing-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-primary);
  width: 50px;
}

.ds-radii-swatch {
  width: 32px;
  height: 32px;
  background: var(--color-navy);
}

.ds-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.ds-grid-3col {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
}

.ds-footer-note {
  background: var(--color-navy);
  border-radius: var(--radius-card-lg);
  padding: 28px;
  color: var(--text-on-dark);
  margin-top: var(--space-xl);
}

.ds-footer-note-inner {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

@media (max-width: 768px) {
  .ds-toc-grid { grid-template-columns: repeat(2, 1fr); }
  .ds-color-grid { grid-template-columns: 1fr 1fr; }
  .ds-derived-grid { grid-template-columns: repeat(3, 1fr); }
  .ds-grid-2col, .ds-grid-3col { grid-template-columns: 1fr; }
}