/* Information architecture chrome — rails, topic index, foot links */
.ts-ia-rail {
  margin: 2rem 0 0;
  padding: 1.25rem 1.15rem;
  border: 1px solid var(--color-border, #d5ddd9);
  border-radius: 12px;
  background: var(--color-surface, #fff);
}

.ts-ia-rail__title {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted, #5f7168);
}

.ts-ia-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

@media (min-width: 720px) {
  .ts-ia-rail__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .ts-ia-rail__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.ts-ia-rail__link {
  display: block;
  padding: 0.75rem 0.85rem;
  border-radius: 10px;
  border: 1px solid transparent;
  text-decoration: none;
  color: inherit;
  background: var(--color-bg, #f4f6f5);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.ts-ia-rail__link:hover,
.ts-ia-rail__link:focus-visible {
  border-color: var(--color-primary, #0a7c6e);
  outline: none;
}

.ts-ia-rail__link.is-current {
  border-color: var(--color-primary, #0a7c6e);
  background: rgba(10, 124, 110, 0.08);
}

.ts-ia-rail__link.is-parent {
  border-color: rgba(10, 124, 110, 0.35);
}

.ts-ia-rail__label {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary, #0a7c6e);
}

.ts-ia-rail__hint {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.82rem;
  line-height: 1.35;
  color: var(--color-text-muted, #5f7168);
}

.ts-ia-topics {
  display: grid;
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}

@media (min-width: 640px) {
  .ts-ia-topics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .ts-ia-topics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.ts-ia-topic {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--color-border, #d5ddd9);
  background: var(--color-surface, #fff);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ts-ia-topic:hover,
.ts-ia-topic:focus-visible {
  border-color: var(--color-primary, #0a7c6e);
  box-shadow: 0 4px 14px rgba(10, 40, 32, 0.06);
  outline: none;
}

.ts-ia-topic__icon {
  flex: 0 0 auto;
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(10, 124, 110, 0.1);
  color: var(--color-primary, #0a7c6e);
}

.ts-ia-topic__body {
  min-width: 0;
}

.ts-ia-topic__label {
  display: block;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text, #1a2420);
}

.ts-ia-topic__desc {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--color-text-muted, #5f7168);
}

.ts-ia-topic__count {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary, #0a7c6e);
}

.ts-page-foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-top: 1.5rem;
}

.ts-page-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.65rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 999px;
  background: rgba(10, 124, 110, 0.1);
  color: var(--color-primary, #0a7c6e);
}

[data-theme="dark"] .ts-ia-rail,
[data-theme="dark"] .ts-ia-topic {
  background: var(--color-surface, #15201c);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .ts-ia-rail__link {
  background: rgba(255, 255, 255, 0.04);
}