/* TOC block — BEM: toc__element--modifier */

.toc {
  padding-block: 24px;
}

.toc__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-card-bg);
  border-radius: var(--radius-card);
  padding: 16px var(--space-card-padding);
}

.toc__title {
  color: var(--color-heading-gold);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-h3);
}

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

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

.toc__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background-color: var(--color-card-bg);
  border-radius: var(--radius-card);
  margin-top: 8px;
  padding: 12px var(--space-card-padding);
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
}

.toc__list.is-open {
  max-height: 600px;
  overflow-y: auto;
  visibility: visible;
}

.toc__list:empty {
  display: none;
}

.toc__item a {
  display: block;
  padding: 8px 4px;
  color: var(--color-text-main);
  font-size: var(--font-size-small);
}

.toc__item a:hover,
.toc__item a:focus-visible {
  color: var(--color-heading-gold);
}