/*
 * FM-06 Select / FM-07 Combobox / FM-08 Multi-select — the popover listbox
 * family. Shared by Ui::SelectComponent, Ui::ComboboxComponent and
 * Ui::MultiSelectComponent; behaviour owned by the popover + listbox
 * Stimulus controllers (app/javascript/controllers).
 *
 * The trigger reuses `.fm-control` (app/assets/stylesheets/components/forms.css)
 * per spec FM-06 "trigger button styled exactly as FM-02" — only the extra
 * flex/icon layout lives here, not the shell itself.
 *
 * Token vars only — enforced by test/lint/css_token_lint_test.rb.
 */

.ui-listbox {
  position: relative;
  display: block;
  width: 100%;
}

/* ---------------------------------------------------------------------- */
/* Trigger                                                                 */
/* ---------------------------------------------------------------------- */

.ui-listbox__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.ui-listbox__trigger:disabled,
.ui-listbox__trigger.is-disabled {
  cursor: not-allowed;
}

.ui-listbox__trigger-label {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-ink);
}

.ui-listbox__trigger--placeholder .ui-listbox__trigger-label {
  font-size: var(--text-sm-light);
  font-weight: 300;
  color: var(--color-ink-muted);
}

.ui-listbox__chevron {
  flex: 0 0 auto;
  display: block;
  color: var(--color-ink-muted);
  transition: transform var(--duration-fast) var(--ease-out);
}

.ui-listbox.is-open .ui-listbox__chevron {
  transform: rotate(180deg);
}

.ui-listbox__trigger-spinner {
  flex: 0 0 auto;
  display: block;
  width: var(--icon-sm);
  height: var(--icon-sm);
  color: var(--color-ink-muted);
  animation: ui-spin var(--duration-spin) linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .ui-listbox__trigger-spinner {
    animation: none;
  }
}

/* ---------------------------------------------------------------------- */
/* Panel                                                                   */
/* ---------------------------------------------------------------------- */

/* Entrance (opacity/transform/transition) is shared — see popover.css. */
.ui-listbox__panel {
  position: fixed;
  z-index: var(--z-popover);
  background: var(--color-surface-solid);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-1);
  max-height: 320px;
  overflow-y: auto;
}

.ui-listbox__panel[hidden] {
  display: none;
}

.ui-listbox.is-flipped .ui-listbox__panel {
  transform: translateY(4px);
}

.ui-listbox.is-open .ui-listbox__panel,
.ui-listbox__panel.is-open {
  opacity: 1;
  transform: none;
}

/* Static forced-open panel used by the styleguide (no JS positioning). */
.ui-listbox__panel--static {
  position: static;
  opacity: 1;
  transform: none;
  margin-top: var(--space-1);
}

/* ---------------------------------------------------------------------- */
/* FM-07 pinned search                                                     */
/* ---------------------------------------------------------------------- */

.ui-listbox__search-wrap {
  position: sticky;
  top: 0;
  background: var(--color-surface-solid);
  padding-block-end: var(--space-1);
  margin-bottom: var(--space-1);
}

.ui-listbox__search {
  position: relative;
  display: flex;
  align-items: center;
}

.ui-listbox__search-icon {
  position: absolute;
  inset-inline-start: var(--space-3);
  display: flex;
  color: var(--color-ink-muted);
  pointer-events: none;
}

.ui-listbox__search-input {
  width: 100%;
  height: var(--control-h-sm);
  border: none;
  border-radius: var(--radius-pill);
  background: var(--color-surface-inset);
  padding-inline-start: calc(var(--icon-sm) + var(--space-3) + var(--space-2));
  padding-inline-end: var(--space-3);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  line-height: var(--text-sm--line-height);
  color: var(--color-ink);
}

.ui-listbox__search-input::placeholder {
  font-size: var(--text-sm-light);
  font-weight: 300;
  color: var(--color-ink-muted);
}

.ui-listbox__search-input:focus-visible {
  outline: none;
  box-shadow: var(--focus-halo);
}

/* ---------------------------------------------------------------------- */
/* Options                                                                 */
/* ---------------------------------------------------------------------- */

.ui-listbox__listbox {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.ui-listbox__group-label {
  padding: var(--space-2) var(--space-3) var(--space-1);
  font-size: var(--text-xs);
  line-height: var(--text-xs--line-height);
  font-weight: 500;
  color: var(--color-ink-muted);
}

.ui-listbox__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  height: 40px;
  padding-inline: var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-ink);
  cursor: pointer;
}

.ui-listbox__option:hover,
.ui-listbox__option.is-active,
.ui-listbox__option.is-selected {
  background: var(--color-accent-100);
}

.ui-listbox__option[hidden] {
  display: none;
}

.ui-listbox__option-icon {
  flex: 0 0 auto;
  display: flex;
}

.ui-listbox__option-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.ui-listbox__option-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ui-listbox__option-description {
  font-size: var(--text-xs);
  line-height: var(--text-xs--line-height);
  color: var(--color-ink-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ui-listbox__option-check {
  flex: 0 0 auto;
  display: none;
  color: var(--color-accent-pressed);
}

.ui-listbox__option.is-selected .ui-listbox__option-check {
  display: flex;
}

.ui-listbox__option.is-disabled {
  color: var(--color-ink-disabled);
  cursor: not-allowed;
  pointer-events: none;
}

/* FM-08 checkbox row */
.ui-listbox__option-checkbox {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--icon-md);
  height: var(--icon-md);
  border-radius: var(--radius-xs);
  border: 1.5px solid var(--color-border-strong);
  background: var(--color-surface-solid);
  color: var(--color-on-accent);
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.ui-listbox__option.is-selected .ui-listbox__option-checkbox {
  background: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
}

.ui-listbox__option-checkbox svg {
  display: none;
}

.ui-listbox__option.is-selected .ui-listbox__option-checkbox svg {
  display: block;
}

/* ---------------------------------------------------------------------- */
/* States — error / disabled / loading forced classes                     */
/* ---------------------------------------------------------------------- */

.ui-listbox.is-disabled .ui-listbox__trigger-label {
  color: var(--color-ink-disabled);
}

/* ---------------------------------------------------------------------- */
/* FM-08 trigger chips                                                    */
/* ---------------------------------------------------------------------- */

.ui-listbox__chips {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}

.ui-listbox__chip {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  max-width: 140px;
  padding-inline: var(--space-2);
  height: 24px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-inset-solid);
  font-size: var(--text-xs);
  color: var(--color-ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ui-listbox__chip--overflow {
  color: var(--color-ink-muted);
}

/*
 * Sibling of the combobox trigger (not nested inside it — a focusable
 * button inside role="combobox" is invalid ARIA), overlaid on the
 * trigger's right edge, just before the chevron.
 */
.ui-listbox__clear {
  position: absolute;
  top: 50%;
  inset-inline-end: calc(var(--space-4) + var(--icon-sm) + var(--space-1));
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--icon-lg);
  height: var(--icon-lg);
  border: none;
  border-radius: var(--radius-round);
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
}

.ui-listbox__clear:hover {
  background: var(--color-surface-hover);
  color: var(--color-ink);
}

.ui-listbox__clear:focus-visible {
  outline: none;
  box-shadow: var(--focus-halo);
}

/* ---------------------------------------------------------------------- */
/* Native serialisation target — never visible, never focusable            */
/* ---------------------------------------------------------------------- */

.ui-listbox__native-wrapper {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}