/* Sidebar navigation */
.page-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: var(--layout-gap);
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-xl) var(--container-padding);
  align-items: start;
}

.main-inner {
  min-height: 50vh;
  max-width: var(--layout-content-max);
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-md));
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  max-height: calc(100vh - var(--header-height) - var(--space-2xl));
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 0;
}

.sidebar__heading {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.sidebar__list,
.sidebar__sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar__sublist {
  display: none;
  margin-left: var(--space-sm);
  padding-left: var(--space-sm);
  border-left: 2px solid var(--color-border-light);
  margin-top: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.sidebar__item.is-expanded > .sidebar__sublist {
  display: block;
}

.sidebar__link {
  display: block;
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  border-radius: var(--radius-pill);
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  line-height: var(--line-height-normal);
}

.sidebar__link:hover {
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  color: var(--color-primary);
  box-shadow: var(--glass-shadow);
}

.sidebar__link.is-active,
.sidebar__link.is-active:visited {
  background: var(--color-primary);
  color: #fff;
  font-weight: var(--font-weight-medium);
  box-shadow: 0 2px 12px rgba(0, 102, 179, 0.3), 0 0 0 0.5px rgba(255, 255, 255, 0.15) inset;
}

.sidebar__link.is-active:hover,
.sidebar__link.is-active:focus-visible {
  background: var(--color-primary-dark);
  color: #fff;
}

.sidebar__link--section {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-dark);
  font-size: var(--font-size-sm);
  padding-top: var(--space-sm);
}

.sidebar__item--depth-0 > .sidebar__link--section {
  padding-top: var(--space-md);
}

.sidebar__item--depth-0:first-child > .sidebar__link--section {
  padding-top: 0;
}

.sidebar__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  width: 100%;
  border: 0;
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.sidebar__toggle:hover {
  cursor: pointer;
}

.sidebar__toggle-label {
  flex: 1;
  min-width: 0;
}

.sidebar__chevron {
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  opacity: 0.45;
  margin-top: -2px;
}

.sidebar__item.is-expanded > .sidebar__toggle .sidebar__chevron {
  transform: rotate(-135deg);
  margin-top: 2px;
}

.sidebar__item.is-expanded > .sidebar__toggle {
  color: var(--color-primary);
}

.page-content {
  min-width: 0;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.breadcrumbs__link {
  color: var(--color-primary);
}

.breadcrumbs__link:hover {
  text-decoration: underline;
}

.breadcrumbs__current {
  color: var(--color-text);
}

.breadcrumbs__sep {
  color: var(--color-text-light);
}

/* Search results dropdown */
.search-form {
  position: relative;
}

.search-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-outer);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow-hover);
  z-index: 200;
  max-height: 320px;
  overflow-y: auto;
}

.search-results a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  border-bottom: 1px solid var(--glass-border-outer);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.search-results a.is-active,
.search-results a:focus {
  background: var(--color-primary-pale);
  color: var(--color-primary-dark);
  outline: none;
}

.search-results__title { flex: 1; min-width: 0; }

.search-results__title mark {
  background: rgba(255, 215, 0, 0.4);
  color: inherit;
  border-radius: 0;
  padding: 0 2px;
}

.search-results__type {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: lowercase;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.search-results__hint {
  padding: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-align: center;
}

.search-results a:first-of-type {
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.search-results a:last-of-type {
  border-bottom: none;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.search-results a:hover {
  background: var(--glass-bg);
}

.search-results__group {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  background: var(--glass-bg-subtle);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
}

@media (max-width: 900px) {
  .page-layout {
    grid-template-columns: 1fr;
    padding-top: var(--space-xl);
  }

  .sidebar:not(.sidebar--mobile) {
    display: none;
  }
}