/*
 * Sidebar
 *
 * Drawn in Figma as `Sidebar` (1396:502), `Sidebar Section` (1396:501) and
 * `Sidebar Item` (1396:412), from this file. Rows take Menu Item's rhythm — 32px, 8px inset, `md`
 * radius — because a sidebar row and a menu row are the same density of
 * choice. The column is `surface/default` against the page's `surface/page`,
 * the same step a card takes. Hover and current are fills (`surface/hover`,
 * `surface/selected`),
 * which is exactly where this parts company with NavItem: NavItem was measured
 * as a header link that recolours and never fills.
 *
 * Written against the contrast gate's known limits (AGENTS.md, "How a
 * stylesheet goes unmeasured"): state is BEM modifiers, the sidebar's surface
 * is on the block so the translucent hover has a ground in this file, and there
 * are no `:not()` lists.
 */
.ion-sidebar {
  display: flex;
  flex-direction: column;
  inline-size: 100%;
  block-size: 100%;
  min-block-size: 0;
  border-inline-end: var(--border-width-default) solid var(--border-subtle);
  background-color: var(--surface-default);
  color: var(--text-secondary);
  font-family: var(--font-family-sans);
  font-size: var(--type-body-sm);
  line-height: var(--type-body-sm-line-height);
}

.ion-sidebar__header,
.ion-sidebar__footer {
  display: flex;
  flex: none;
  flex-direction: column;
  gap: var(--spacing-8);
  padding: var(--spacing-12);
}

.ion-sidebar__header {
  border-block-end: var(--border-width-default) solid var(--border-subtle);
}

.ion-sidebar__footer {
  border-block-start: var(--border-width-default) solid var(--border-subtle);
}

/* Only the middle scrolls, so the switcher and Invite stay put. */
.ion-sidebar__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: var(--spacing-16);
  min-block-size: 0;
  padding: var(--spacing-12) var(--spacing-8);
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* ---------------------------------------------------------------- section */

.ion-sidebar__section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.ion-sidebar__section-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  min-block-size: var(--spacing-24);
  padding-inline: var(--spacing-8) var(--spacing-4);
}

.ion-sidebar__section-title {
  display: inline-flex;
  flex: 1 1 auto;
  align-items: center;
  gap: var(--spacing-4);
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: var(--radius-xs);
  background: none;
  color: var(--text-tertiary);
  font: inherit;
  font-size: var(--type-caption);
  line-height: var(--type-caption-line-height);
  font-weight: var(--font-weight-medium);
  text-align: start;
}

button.ion-sidebar__section-title {
  cursor: pointer;
}

.ion-sidebar__section-actions {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: var(--spacing-2);
}

/* -------------------------------------------------------------------- list */

.ion-sidebar__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

/*
 * Indentation accumulates by nesting, so depth needs no prop and no inline
 * style: each level is one more padded list inside the last.
 */
.ion-sidebar__list--nested {
  margin-block-start: var(--spacing-2);
  padding-inline-start: var(--spacing-16);
}

/* A hidden list is `hidden`; the display above must not override it. */
.ion-sidebar__list[hidden] {
  display: none;
}

/* --------------------------------------------------------------------- row */

.ion-sidebar__row {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  min-block-size: var(--spacing-32);
  padding-inline-end: var(--spacing-4);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
}

.ion-sidebar__link {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  gap: var(--spacing-8);
  min-inline-size: 0;
  min-block-size: var(--spacing-32);
  margin: 0;
  padding: 0 var(--spacing-8);
  border: 0;
  border-radius: var(--radius-md);
  background: none;
  color: inherit;
  font: inherit;
  text-align: start;
  text-decoration: none;
}

a.ion-sidebar__link,
button.ion-sidebar__link {
  cursor: pointer;
}

.ion-sidebar__icon {
  display: inline-flex;
  flex: none;
  color: var(--icon-secondary);
}

.ion-sidebar__icon svg,
.ion-sidebar__chevron svg {
  width: var(--icon-size-sm);
  height: var(--icon-size-sm);
}

/* Long names truncate; the full text is still the link's accessible name. */
.ion-sidebar__label {
  flex: 1 1 auto;
  min-inline-size: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ion-sidebar__badge {
  flex: none;
  color: var(--text-tertiary);
  font-size: var(--type-caption);
  line-height: var(--type-caption-line-height);
  font-variant-numeric: tabular-nums;
}

.ion-sidebar__chevron {
  display: inline-flex;
  flex: none;
  color: var(--icon-tertiary);
  transition: transform var(--ion-duration-base) var(--ion-ease-out);
}

/*
 * Closed, it points the reading direction: right, or in right-to-left, left —
 * turned half round, so opening animates to 90° either way. `:where()` keeps
 * the rule's weight a single class, so the open rules after it still win.
 */
.ion-sidebar__chevron:where(:dir(rtl)) {
  transform: rotate(180deg);
}

.ion-sidebar__chevron--expanded,
.ion-sidebar__section-title--expanded .ion-sidebar__chevron {
  transform: rotate(90deg);
}

/* The separate expand button of a row that is also a link. */
.ion-sidebar__toggle {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: var(--spacing-24);
  height: var(--spacing-24);
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: inherit;
  cursor: pointer;
}

/*
 * Row actions. Hidden until the row is hovered or holds focus — `opacity`,
 * not `display` or `visibility`, so they stay in the tab order and appear the
 * moment focus reaches them. Always shown where there is no hover to reveal
 * them, or a touch user could never find them.
 */
.ion-sidebar__actions {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: var(--spacing-2);
  opacity: 0;
}

.ion-sidebar__row:hover .ion-sidebar__actions,
.ion-sidebar__row:focus-within .ion-sidebar__actions {
  opacity: 1;
}

@media (hover: none) {
  .ion-sidebar__actions {
    opacity: 1;
  }
}

/* ------------------------------------------------------------------ states */

@media (hover: hover) {
  .ion-sidebar__row:hover {
    background-color: var(--surface-hover);
    color: var(--text-default);
  }
}

.ion-sidebar__row--current {
  background-color: var(--surface-selected);
  color: var(--text-default);
  font-weight: var(--font-weight-medium);
}

.ion-sidebar__row--current .ion-sidebar__icon {
  color: var(--icon-primary);
}

@media (hover: hover) {
  .ion-sidebar__row--current:hover {
    background-color: var(--surface-selected-hover);
  }
}

/*
 * Two classes, so a disabled row does not react to hover. The sidebar's surface
 * is repeated rather than `transparent`, which the contrast gate would read as an
 * inherited surface and drop — see the note in segmented-control.css.
 */
.ion-sidebar .ion-sidebar__row--disabled {
  background-color: var(--surface-default);
  color: var(--text-disabled);
  cursor: not-allowed;
}

.ion-sidebar .ion-sidebar__row--disabled .ion-sidebar__icon {
  color: var(--icon-disabled);
}

.ion-sidebar__link:focus-visible,
.ion-sidebar__toggle:focus-visible,
.ion-sidebar__section-title:focus-visible {
  outline: var(--border-width-thick) solid var(--border-focus);
  outline-offset: calc(-1 * var(--border-width-thick));
}

@media (forced-colors: active) {
  .ion-sidebar__row--current {
    outline: var(--border-width-default) solid;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ion-sidebar__chevron {
    transition: none;
  }
}