/* ============================================
   Custom Comprehensive Navigation (cn-nav)
   ============================================ */

.cn-nav {
  padding: 0 0.5rem 1rem 0.5rem;
  margin-top: -0.6rem;
}

/* Section item wrapper */
.cn-item {
  margin-bottom: 0.1rem;
}

/* Section header row */
.cn-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.3rem 0.5rem;
  border-radius: 0.2rem;
}

.cn-header:hover {
  background-color: var(--md-default-fg-color--lightest);
}

/* Section label link */
.cn-label {
  font-size: 0.65rem;
  font-weight: 450;
  letter-spacing: 0.01em;
  color: var(--md-default-fg-color);
  text-decoration: none;
  flex-grow: 1;
  line-height: 1.4;
}

.cn-label:hover {
  color: var(--md-primary-fg-color);
  text-decoration: none;
}

.cn-label--active,
.cn-item--active .cn-label {
  color: var(--md-primary-fg-color);
}

/* Toggle arrows */
.cn-arrow {
  font-size: 1rem;
  color: var(--md-default-fg-color--light);
  transition: transform 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
  flex-shrink: 0;
  cursor: pointer;
  user-select: none;
}

.cn-arrow:hover {
  color: var(--md-primary-fg-color);
}

.cn-arrow--sub {
  font-size: 0.85rem;
  width: 1rem;
  height: 1rem;
}

/* Sub-page lists */
.cn-sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.cn-subitem {
  margin: 0;
}

/* Rows with children: link + arrow side by side */
.cn-subheader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: 0.2rem;
}

.cn-subheader:hover {
  background-color: var(--md-default-fg-color--lightest);
}

/* depth 1 - direct children of section */
.cn-sublist--depth-1 > .cn-subitem > .cn-sublink,
.cn-sublist--depth-1 > .cn-subitem > .cn-subheader > .cn-sublink {
  padding: 0.28rem 0.4rem 0.28rem 1.0rem;
  font-size: 0.63rem;
  font-weight: 400;
}

/* depth 2 */
.cn-sublist--depth-2 > .cn-subitem > .cn-sublink,
.cn-sublist--depth-2 > .cn-subitem > .cn-subheader > .cn-sublink {
  padding: 0.25rem 0.4rem 0.25rem 1.8rem;
  font-size: 0.61rem;
  font-weight: 400;
}

/* depth 3 */
.cn-sublist--depth-3 > .cn-subitem > .cn-sublink,
.cn-sublist--depth-3 > .cn-subitem > .cn-subheader > .cn-sublink {
  padding: 0.22rem 0.4rem 0.22rem 2.6rem;
  font-size: 0.59rem;
  font-weight: 400;
}

/* All sub-links */
.cn-sublink {
  display: block;
  flex-grow: 1;
  line-height: 1.4;
  color: var(--md-default-fg-color--light);
  text-decoration: none;
  border-radius: 0.2rem;
  transition: background-color 0.15s, color 0.15s;
}

.cn-sublink:not(.cn-sublink--parent):hover {
  background-color: var(--md-default-fg-color--lightest);
  color: var(--md-default-fg-color);
  text-decoration: none;
}

.cn-sublink--active {
  color: var(--md-primary-fg-color) !important;
  font-weight: 500;
}

/* Parent link (has children) */
.cn-sublink--parent {
  font-weight: 400;
  color: var(--md-default-fg-color);
}

.cn-sublink--parent:hover {
  color: var(--md-primary-fg-color);
  text-decoration: none;
}

/* Section headings with subsections */
.comprehensive-nav .md-nav__item--section > .md-nav__link {
  font-weight: 500;
  font-size: 0.8rem;
  cursor: pointer !important;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  pointer-events: auto !important;
  padding: 0.35rem 0.6rem;
  margin-bottom: 0.05rem;
  line-height: 1.5;
  min-height: auto;
  height: auto;
}

.comprehensive-nav .md-nav__item--section > .md-nav__link:hover {
  background-color: var(--md-default-fg-color--lightest) !important;
}

/* Section link inside the nav item */
.comprehensive-nav .md-nav__item--section > .md-nav__link a {
  color: inherit;
  text-decoration: none;
  line-height: inherit;
  padding: 0;
  margin: 0;
}

.comprehensive-nav .md-nav__item--section > .md-nav__link a:hover {
  text-decoration: none;
}

/* Active section link inside toggle sections */
.comprehensive-nav .md-nav__item--section > .md-nav__link a.md-nav__link--active {
  color: var(--md-primary-fg-color);
  font-weight: 600;
}

.comprehensive-nav .md-nav__item--section > .md-nav__link.md-nav__link--active {
  color: var(--md-primary-fg-color);
}

/* Simple links without subsections */
.comprehensive-nav .md-nav__item:not(.md-nav__item--section) > .md-nav__link {
  font-weight: 500;
  font-size: 0.8rem;
  padding: 0.35rem 0.6rem;
  margin-bottom: 0.05rem;
  line-height: 1.5;
  height: auto;
}

.comprehensive-nav .md-nav__item {
  padding: 0;
  margin-bottom: 0;
  margin-top: 0;
}

.comprehensive-nav .md-nav__link {
  margin-top: 0;
  border-radius: 0.2rem;
  transition: background-color 0.2s;
  display: block;
}

.comprehensive-nav .md-nav__link:hover {
  background-color: var(--md-default-fg-color--lightest);
}

/* Subsection links - smaller and lighter like TOC */
.comprehensive-nav .md-nav[data-md-level="1"] .md-nav__link {
  padding: 0.35rem 0.6rem 0.35rem 1.8rem;
  font-size: 0.64rem;
  font-weight: 400;
  margin-bottom: 0.05rem;
  line-height: 1.5;
  font-family: inherit;
  color: var(--md-default-fg-color--light);
}

/* Subsection container spacing */
.comprehensive-nav .md-nav[data-md-level="1"] {
  margin: 0;
  padding: 0;
  /* Let JavaScript control visibility */
  max-height: none;
  overflow: visible;
}

/* Ensure subsections are visible when expanded */
.comprehensive-nav .md-nav__item--section.expanded .md-nav[data-md-level="1"] {
  display: block !important;
  margin: 0;
  padding: 0;
}

/* Make sections collapsible - handled by JavaScript now */
.comprehensive-nav .md-nav__toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

/* Active state */
.comprehensive-nav .md-nav__link--active {
  color: var(--md-primary-fg-color);
  font-weight: 500;
}