/* The documentation version picker, served once at the Pages root beside
 * version-picker.js and loaded by every documentation version.
 *
 * Only Starlight's own `--sl-*` custom properties are read here. Every version
 * that loads this file carries Starlight's, while Ptah's own tokens are those
 * of the release that built the page and may not exist in an older one. */

/* The button in the header: `padding: 2px 7px`, a 1px hairline, radius 2px,
 * 12px mono in gray-2, reading "edge" with a small triangle after it. Before
 * the script runs, the mount point holds the version as text in the same box,
 * so the header does not move when the button replaces it. */
.ptah-version-picker {
  position: relative;
  display: flex;
  align-items: center;
  margin-inline-start: auto;
}

.ptah-version-picker__trigger,
.ptah-version-picker__current {
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin: 0;
  padding: 2px 7px;
  border: 1px solid var(--sl-color-hairline);
  border-radius: 2px;
  background: transparent;
  color: var(--sl-color-gray-2);
  font-family: var(--sl-font-mono);
  font-size: 0.75rem;
  line-height: 1.3;
  max-width: 9rem;
}

.ptah-version-picker__current {
  padding-inline-end: 1.25rem;
}

.ptah-version-picker__trigger {
  cursor: pointer;
}

.ptah-version-picker__trigger:hover,
.ptah-version-picker__trigger[aria-expanded='true'] {
  border-color: var(--sl-color-gray-4);
  color: var(--sl-color-white);
}

.ptah-version-picker__trigger:focus-visible {
  outline: 2px solid var(--sl-color-accent);
  outline-offset: 2px;
}

.ptah-version-picker__value {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ptah-version-picker__caret {
  font-size: 0.75rem;
  line-height: 1;
  transition: transform 0.12s ease;
}

.ptah-version-picker__trigger[aria-expanded='true'] .ptah-version-picker__caret {
  transform: rotate(180deg);
}

/* The panel is placed by the script, below the button and inside the
 * viewport. It is a child of the body rather than of the header, so the
 * header's clipping cannot cut it off. */
.ptah-version-picker__panel {
  position: fixed;
  z-index: 30;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  width: min(19rem, calc(100vw - 1rem));
  max-height: min(28rem, var(--ptah-version-picker-room, 28rem));
  border: 1px solid var(--sl-color-hairline);
  border-radius: 4px;
  background: var(--sl-color-bg-nav);
  box-shadow: var(--sl-shadow-md);
  color: var(--sl-color-gray-2);
  font-family: var(--sl-font);
  font-size: 0.8125rem;
  line-height: 1.4;
  animation: ptah-version-picker-in 0.12s ease-out;
}

.ptah-version-picker__panel[hidden] {
  display: none;
}

.ptah-version-picker__panel:focus {
  outline: none;
}

@keyframes ptah-version-picker-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ptah-version-picker__panel {
    animation: none;
  }
  .ptah-version-picker__caret {
    transition: none;
  }
}

/* The filter: a field across the top, its magnifier drawn with borders. */
.ptah-version-picker__search {
  position: relative;
  flex: none;
  border-bottom: 1px solid var(--sl-color-hairline);
}

.ptah-version-picker__search-icon {
  position: absolute;
  top: 50%;
  inset-inline-start: 0.75rem;
  width: 0.5rem;
  height: 0.5rem;
  margin-top: -0.3125rem;
  border: 1.5px solid var(--sl-color-gray-3);
  border-radius: 50%;
  pointer-events: none;
}

.ptah-version-picker__search-icon::after {
  content: '';
  position: absolute;
  top: 0.4375rem;
  left: 0.4375rem;
  width: 0.25rem;
  height: 1.5px;
  background: var(--sl-color-gray-3);
  transform: rotate(45deg);
  transform-origin: left center;
}

.ptah-version-picker__input {
  box-sizing: border-box;
  width: 100%;
  margin: 0;
  padding: 0.625rem 0.75rem 0.625rem 2rem;
  border: 0;
  background: transparent;
  color: var(--sl-color-white);
  font: inherit;
  appearance: none;
}

.ptah-version-picker__input::placeholder {
  color: var(--sl-color-gray-2);
}

.ptah-version-picker__input:focus {
  outline: none;
}

.ptah-version-picker__search:focus-within {
  box-shadow: inset 0 -1px 0 var(--sl-color-accent);
}

.ptah-version-picker__input::-webkit-search-cancel-button {
  appearance: none;
}

/* The list scrolls on its own, so the filter and the hints stay in view. */
.ptah-version-picker__list {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.25rem 0;
}

.ptah-version-picker__group[hidden],
.ptah-version-picker__item[hidden],
.ptah-version-picker__empty[hidden] {
  display: none;
}

.ptah-version-picker__group + .ptah-version-picker__group {
  margin-top: 0.25rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--sl-color-hairline);
}

.ptah-version-picker__group-title {
  margin: 0;
  padding: 0.375rem 0.75rem 0.25rem;
  color: var(--sl-color-gray-2);
  font-family: var(--sl-font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ptah-version-picker__option {
  display: grid;
  grid-template-columns: 1rem auto 1fr auto;
  align-items: center;
  column-gap: 0.5rem;
  margin: 0 0.25rem;
  padding: 0.375rem 0.5rem;
  border-radius: 3px;
  color: var(--sl-color-gray-1);
  text-decoration: none;
}

.ptah-version-picker__option:hover,
.ptah-version-picker__option:focus-visible {
  background: var(--sl-color-gray-6);
  color: var(--sl-color-white);
}

.ptah-version-picker__option:focus-visible {
  outline: 2px solid var(--sl-color-accent);
  outline-offset: -2px;
}

.ptah-version-picker__option[aria-current='page'] {
  color: var(--sl-color-white);
}

.ptah-version-picker__mark {
  color: var(--sl-color-accent-high);
  font-size: 0.75rem;
  text-align: center;
}

.ptah-version-picker__slug {
  font-family: var(--sl-font-mono);
  font-size: 0.8125rem;
}

.ptah-version-picker__option[aria-current='page'] .ptah-version-picker__slug {
  font-weight: 600;
}

.ptah-version-picker__badge {
  justify-self: start;
  padding: 0 0.3125rem;
  border: 1px solid var(--sl-color-accent);
  border-radius: 2px;
  background: var(--sl-color-accent-low);
  color: var(--sl-color-accent-high);
  font-family: var(--sl-font-mono);
  font-size: 0.625rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ptah-version-picker__meta {
  grid-column: 4;
  color: var(--sl-color-gray-2);
  font-family: var(--sl-font-mono);
  font-size: 0.6875rem;
  white-space: nowrap;
}

.ptah-version-picker__empty {
  margin: 0;
  padding: 0.75rem;
  color: var(--sl-color-gray-2);
}

/* Keyboard hints, only where there is likely a keyboard. */
.ptah-version-picker__hints {
  display: none;
  flex: none;
  gap: 0.875rem;
  margin: 0;
  padding: 0.375rem 0.75rem;
  border-top: 1px solid var(--sl-color-hairline);
  color: var(--sl-color-gray-2);
  font-size: 0.6875rem;
}

@media (hover: hover) and (pointer: fine) {
  .ptah-version-picker__hints {
    display: flex;
  }
}

.ptah-version-picker__hints kbd {
  padding: 0 0.25rem;
  border: 1px solid var(--sl-color-hairline);
  border-radius: 2px;
  font-family: var(--sl-font-mono);
  font-size: 0.625rem;
}

/* Phone: the button at 11.5px mono, `padding: 1px 6px`; the header has three
 * 44px controls to fit at the right. The rows get taller targets. */
@media (width < 50rem) {
  .ptah-version-picker__trigger,
  .ptah-version-picker__current {
    padding: 1px 6px;
    font-size: 0.71875rem;
  }
  .ptah-version-picker__current {
    padding-inline-end: 1.125rem;
  }
  .ptah-version-picker__caret {
    font-size: 0.6875rem;
  }
  .ptah-version-picker__option {
    padding-block: 0.625rem;
  }
}