/* =============================================================================
   HelpSite TK — Sidebar Navigation Styles
   ============================================================================= */

.docs-sidebar {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.docs-sidebar__inner {
  padding: 0 var(--space-md);
}

/* ── Root list ── */
.docs-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.docs-nav__list--root {
  /* top-level items get slightly larger text */
  font-size: 0.875rem;
}

/* ── Nested list ── */
.docs-nav__list--child {
  font-size: 0.8125rem;
  padding-left: var(--space-md);
  border-left: 1px solid var(--color-border-light);
  margin-left: 0.5rem;
  /* collapsed by default — toggled by JS */
  display: none;
}

/* Show child list when parent is open. The is-ancestor class is set on
   the active page's path by the PHP renderer for styling only — the
   server also adds is-open to those items at render time, so they start
   expanded; after that, JS controls visibility via is-open alone so a
   user-initiated collapse actually collapses. */
.docs-nav__item.is-open > .docs-nav__list--child {
  display: block;
}

/* ── Item ── */
.docs-nav__item {
  margin: 0;
}

/* ── Item row (link + toggle button) ── */
.docs-nav__item-row {
  display: flex;
  align-items: center;
}

/* ── Link ── */
.docs-nav__link {
  display: block;
  flex: 1;
  padding: 0.35em 0.5em;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color 0.12s, background 0.12s;
  font-weight: 450;
  line-height: 1.4;
  /* truncate long titles */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.docs-nav__item.has-children > .docs-nav__link,
.docs-nav__item.has-children > .docs-nav__item-row > .docs-nav__link {
  font-weight: 600;
  color: var(--color-text);
}

.docs-nav__link:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
  text-decoration: none;
}

/* Active state */
.docs-nav__item.is-active > .docs-nav__link,
.docs-nav__item.is-active > .docs-nav__item-row > .docs-nav__link {
  color: var(--color-accent);
  background: var(--color-accent-light);
  font-weight: 600;
}

/* Ancestor (open parent section) */
.docs-nav__item.is-ancestor > .docs-nav__link,
.docs-nav__item.is-ancestor > .docs-nav__item-row > .docs-nav__link {
  color: var(--color-text);
}

/* ── Expand/collapse toggle button ── */
.docs-nav__toggle {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  margin-left: 2px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-faint);
  transition: color 0.12s, background 0.12s, transform 0.2s;
}
.docs-nav__toggle:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

/* The chevron icon rendered via CSS */
.docs-nav__toggle-icon {
  display: block;
  width: 10px;
  height: 10px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg) translateY(-1px);
  transition: transform 0.2s;
}

/* Rotate icon when open */
.docs-nav__item.is-open > .docs-nav__item-row > .docs-nav__toggle .docs-nav__toggle-icon {
  transform: rotate(45deg) translateX(-1px);
}

/* ── Nav group heading (no-link parent) ── */
.docs-nav__link--group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.35em 0.5em;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  line-height: 1.4;
  transition: color 0.12s, background 0.12s;
}

.docs-nav__link--group:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.docs-nav__link--group .docs-nav__group-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.docs-nav__link--group .docs-nav__toggle-icon {
  flex-shrink: 0;
  margin-left: 6px;
  width: 10px;
  height: 10px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg) translateY(-1px);
  transition: transform 0.2s;
  opacity: 0.5;
}

.docs-nav__item.is-open > .docs-nav__link--group .docs-nav__toggle-icon {
  transform: rotate(45deg) translateX(-1px);
}

/* ── Top-level section separator ── */
.docs-nav__list--root > .docs-nav__item + .docs-nav__item {
  border-top: 1px solid var(--color-border-light);
  margin-top: 0.25rem;
  padding-top: 0.25rem;
}

/* ── Mobile: sidebar toggle (controlled via sidebar.js) ── */
@media (max-width: 700px) {
  .docs-sidebar {
    padding: var(--space-md) 0;
  }

  /* Add a disclosure toggle for the whole sidebar on mobile */
  .docs-sidebar[data-collapsed="true"] .docs-sidebar__inner {
    display: none;
  }

  .docs-sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: none;
    border: none;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    font-family: var(--font-sans);
  }
  .docs-sidebar-toggle::after {
    content: '▼';
    font-size: 0.75rem;
    color: var(--color-text-muted);
    transition: transform 0.2s;
  }
  .docs-sidebar[data-collapsed="false"] .docs-sidebar-toggle::after {
    transform: rotate(180deg);
  }
}