/* toc.css */
.toc {
  background: var(--color-card);
  border-radius: var(--radius-card);
  padding: 0.5rem var(--space-card-padding);
  margin-block: var(--space-h2-text);
}
.toc__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 0.85rem 0;
  color: var(--color-white);
  font-weight: var(--fw-bold);
  font-size: 1.05rem;
  text-align: left;
}
.toc__title { color: var(--color-accent-yellow); }
.toc__chevron {
  width: 12px; height: 12px;
  border-right: 2px solid var(--color-accent-yellow);
  border-bottom: 2px solid var(--color-accent-yellow);
  transform: rotate(45deg);
  transition: transform var(--transition);
  flex: 0 0 auto;
  margin-right: 4px;
}
.toc--collapsed .toc__chevron { transform: rotate(-135deg); }

.toc__nav {
  overflow: hidden;
  max-height: 1200px;
  transition: max-height var(--transition), opacity var(--transition);
}
.toc--collapsed .toc__nav { max-height: 0; opacity: 0; }

.toc__list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding-block: 0.5rem 0.85rem;
}
.toc__item { width: 100%; }
.toc__link {
  display: block;
  padding: 0.5rem 0.6rem;
  border-radius: 4px;
  color: var(--color-text);
  border-left: 3px solid transparent;
  transition: color var(--transition), background-color var(--transition), border-color var(--transition);
}
.toc__link:hover, .toc__link:focus-visible {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.04);
  border-left-color: var(--color-accent-yellow);
}