/**
 * toc.css — BEM: toc, toc__*
 */
.toc {
  background: var(--color-bg-dark);
  border-radius: var(--radius-card);
  margin-block: var(--section-gap);
}

.toc .container {
  padding-block: 0.25rem;
}

.toc__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 1.5rem);
  color: var(--color-heading-gold);
  font-weight: var(--font-weight-semibold);
  font-size: 1rem;
}

.toc__arrow {
  color: var(--color-heading-gold);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.toc__toggle[aria-expanded="true"] .toc__arrow {
  transform: rotate(180deg);
}

.toc__list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0 clamp(1rem, 4vw, 1.5rem) 1.25rem;
  overflow: hidden;
}

.toc__list[hidden] {
  display: none;
}

.toc__list a {
  display: block;
  color: var(--color-text-primary);
  font-size: var(--font-size-small);
  text-decoration: none;
  padding: 0.35rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.toc__list a:hover {
  color: var(--color-heading-gold);
  border-left-color: var(--color-heading-gold);
}