/* article-toc.css — lasercleanerpro.com
 * Table of Contents (post-optimizer structure + site shell compat).
 * Default state = COLLAPSED; heading onclick toggles .expanded. */

/* ---- Container ---- */
#toc-nav-container,
.article-toc {
  background: #F4F7FA;
  border: 1px solid #E5E9EF;
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}

/* ---- post-optimizer structure ---- */
.article-toc-title {
  font-family: 'Space Grotesk','Inter',sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #131A24;
  margin: 0;
  cursor: pointer;
}

.article-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-toc-item {
  margin: 0;
}

.article-toc-link {
  display: block;
  padding: 0.45rem 0.75rem;
  border-left: 3px solid #E5E9EF;
  color: #3F4854;
  font-size: 0.95rem;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
}

.article-toc-link:hover {
  border-left-color: #00A6D6;
  color: #00A6D6;
  background: #ffffff;
}

/* ---- Site shell compat (.toc-nav / .toc-title / .toc-list) ---- */
.toc-nav {
  background: #F4F7FA;
  border: 1px solid #E5E9EF;
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}

/* .toc-title is an <h2>: MUST get a compact size or it renders huge */
.toc-title {
  font-family: 'Space Grotesk','Inter',sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #131A24;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  cursor: pointer;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-list li a {
  display: block;
  padding: 0.45rem 0.75rem;
  border-left: 3px solid #E5E9EF;
  color: #3F4854;
  font-size: 0.95rem;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
}

.toc-list li a:hover {
  border-left-color: #00A6D6;
  color: #00A6D6;
  background: #ffffff;
}

/* ---- Collapsible behavior (click title toggles .expanded) ---- */
/* Default collapsed: only the title row is visible */
#toc-list-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

/* Expanded state: title click adds .expanded on the container */
#toc-nav-container.expanded #toc-list-content {
  max-height: 1500px;
  margin-top: 0.875rem;
  transition: max-height 0.5s ease;
}

.toc-toggle-icon {
  transition: transform 0.3s ease;
}