/* Design rationale: docs/claude_context/article_toc.md */
.article-page--has-toc {
  padding-left: calc(var(--toc-icon-size, 1.3rem) + 2.2rem);
}

.toc-open-sticky {
  position: sticky;
  top: 1.5rem;
  height: 0;
  margin-left: calc(-1 * (var(--toc-icon-size, 1.3rem) + 2.2rem));
  width: calc(var(--toc-icon-size, 1.3rem) + 2.2rem);
  z-index: 40;
}

.toc-open-sticky + * {
  margin-top: 0;
}

.toc-open-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(var(--toc-icon-size, 1.3rem) + 1.45rem);
  height: calc(var(--toc-icon-size, 1.3rem) + 1.45rem);
  padding: 0;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text);
  cursor: pointer;
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.toc-open-button:hover {
  box-shadow: 0 4px 12px var(--color-shadow);
  transform: translateY(-1px);
}

.toc-open-icon {
  width: var(--toc-icon-size, 1.3rem);
  height: var(--toc-icon-size, 1.3rem);
  flex: 0 0 auto;
}

@media (max-width: 45rem) {
  .article-page--has-toc {
    padding-left: 0;
  }

  .toc-open-sticky {
    display: none;
  }
}

.toc-title-sticky {
  display: none;
}

@media (max-width: 45rem) {
  .toc-title-sticky {
    display: block;
    position: sticky;
    top: 1rem;
    height: 0;
    z-index: 40;
    margin-top: 1rem;
  }

  .toc-title-sticky + .article-header {
    margin-top: 1rem;
  }
}

.toc-title-button {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  padding: 0;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text);
  cursor: pointer;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.toc-title-button .toc-open-icon {
  width: 1.6rem;
  height: 1.6rem;
}