/*
 * GridSelect default stylesheet.
 * Everything sits in @layer gridselect, so any rule of your own wins without !important.
 * Change the look through the --gs-* variables on :root, on a wrapper, or on any ancestor.
 * Colours and contrast ratios: see the README. Force a mode with data-theme="light|dark"
 * on any ancestor, otherwise prefers-color-scheme decides.
 */
@layer gridselect {
  :root,
  [data-theme="light"] {
    --gs-bg: #ffffff;
    --gs-item-bg: #f5f7fa;
    --gs-fg: #0e1117;
    --gs-muted: #636b78;
    --gs-border: #7a8494;
    --gs-accent: #03a2a5;
    --gs-accent-fg: #0e1117;
    --gs-accent-text: #00787b;
    --gs-key-bg: #dce6ec;
    --gs-key-fg: #0e1117;
    --gs-key-selected-bg: #8ed5d6;
    --gs-invalid: #b91c1c;
    --gs-shadow: 0 8px 30px rgb(0 13 26 / 0.12);

    --gs-font: inherit;
    --gs-radius: 999px;
    --gs-gap: 0.5rem;
    --gs-item-min-height: 2rem;
    --gs-item-padding: 0.25rem 0.75rem;
    --gs-item-min-width: 8rem;
    --gs-focus-width: 2px;
    --gs-panel-width: min(40rem, 100vw - 2rem);
    --gs-list-max-height: 18rem;
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --gs-bg: #171d28;
      --gs-item-bg: #1c2433;
      --gs-fg: #dee4ee;
      --gs-muted: #9ca3af;
      --gs-border: #7e8ca0;
      --gs-accent-text: #03a2a5;
      --gs-key-bg: #2b3646;
      --gs-key-fg: #dee4ee;
      --gs-invalid: #f87171;
      --gs-shadow: 0 8px 30px rgb(0 0 0 / 0.45);
    }
  }

  [data-theme="dark"] {
    --gs-bg: #171d28;
    --gs-item-bg: #1c2433;
    --gs-fg: #dee4ee;
    --gs-muted: #9ca3af;
    --gs-border: #7e8ca0;
    --gs-accent-text: #03a2a5;
    --gs-key-bg: #2b3646;
    --gs-key-fg: #dee4ee;
    --gs-invalid: #f87171;
    --gs-shadow: 0 8px 30px rgb(0 0 0 / 0.45);
  }

  /* Wrapper */
  [data-gridselect] {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--gs-gap);
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
    font: var(--gs-font);
  }

  [data-gridselect] > legend {
    width: 100%;
    margin-bottom: 0.25rem;
    padding: 0;
    font-weight: 600;
  }

  /* Items below the threshold: your own labels around native inputs */
  [data-gridselect] > label {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: var(--gs-item-min-height);
    padding: var(--gs-item-padding);
    border: 1px solid var(--gs-border);
    border-radius: var(--gs-radius);
    background: var(--gs-item-bg);
    color: var(--gs-fg);
    cursor: pointer;
    overflow-wrap: anywhere;
  }

  /* Invisible but still focusable and announced */
  [data-gridselect] > label > input {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: 0;
    opacity: 0;
    pointer-events: none;
  }

  [data-gridselect] > label:has(:checked) {
    border-color: var(--gs-accent);
    background: var(--gs-accent);
    color: var(--gs-accent-fg);
    font-weight: 600;
  }

  [data-gridselect] > label:has(:focus-visible) {
    outline: var(--gs-focus-width) solid var(--gs-accent);
    outline-offset: 2px;
  }

  [data-gridselect] > label:has(:disabled) {
    color: var(--gs-muted);
    text-decoration: line-through;
    cursor: not-allowed;
  }

  /* Closed field above the threshold */
  .gridselect__field {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-width: min(16rem, 100%);
    max-width: 100%;
    min-height: 2.5rem;
    padding: 0.4rem 2.25rem 0.4rem 0.75rem;
    border: 1px solid var(--gs-border);
    border-radius: 0.5rem;
    background: var(--gs-bg);
    color: var(--gs-fg);
    font: inherit;
    text-align: start;
    overflow-wrap: anywhere;
    cursor: pointer;
  }

  .gridselect__field::after {
    content: "";
    position: absolute;
    inset-inline-end: 0.9rem;
    top: 50%;
    width: 0.45rem;
    height: 0.45rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-70%) rotate(45deg);
  }

  .gridselect__field[aria-expanded="true"]::after {
    transform: translateY(-30%) rotate(-135deg);
  }

  .gridselect__field:focus-visible,
  .gridselect__search:focus-visible {
    outline: var(--gs-focus-width) solid var(--gs-accent);
    outline-offset: 2px;
  }

  .gridselect__field[aria-invalid="true"] {
    border-color: var(--gs-invalid);
    box-shadow: inset 0 0 0 1px var(--gs-invalid);
  }

  .gridselect__field:disabled {
    opacity: 0.55;
    cursor: not-allowed;
  }

  /* Panel */
  .gridselect__panel {
    position: absolute;
    top: calc(100% + 0.25rem);
    inset-inline-start: 0;
    z-index: 10;
    box-sizing: border-box;
    width: var(--gs-panel-width);
    max-width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gs-border);
    border-radius: 0.75rem;
    background: var(--gs-bg);
    color: var(--gs-fg);
    box-shadow: var(--gs-shadow);
  }

  /* Opened upwards when there is more room above (panelHeight "auto") */
  .gridselect__panel[data-placement="top"] {
    top: auto;
    bottom: calc(100% + 0.25rem);
  }

  .gridselect__search {
    display: block;
    box-sizing: border-box;
    width: 100%;
    min-height: 2.25rem;
    margin: 0 0 0.6rem;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--gs-border);
    border-radius: 0.5rem;
    background: var(--gs-item-bg);
    color: var(--gs-fg);
    font: inherit;
  }

  .gridselect__search::placeholder {
    color: var(--gs-muted);
    opacity: 1;
  }

  .gridselect__scroller {
    max-height: var(--gs-list-max-height);
    overflow-y: auto;
  }

  .gridselect__items {
    display: grid;
    /* columns as wide as the widest item (measured by the script), at least --gs-item-min-width,
       at most half the list, so one very long label never forces a single column */
    grid-template-columns: repeat(auto-fill, minmax(min(max(var(--gs-item-min-width), min(var(--gs-auto-width, 0px), 50% - var(--gs-gap))), 100%), 1fr));
    /* every row as tall as the tallest one, so a wrapped label never makes the grid uneven */
    grid-auto-rows: 1fr;
    gap: var(--gs-gap);
    margin: 0;
    /* room for the cursor outline */
    padding: calc(var(--gs-focus-width) + 2px);
  }

  .gridselect__items--list {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
  }

  .gridselect__items--flow {
    display: flex;
    flex-wrap: wrap;
  }

  .gridselect__items--flow .gridselect__item {
    flex: 0 1 auto;
  }

  /* Groups: each group spans the whole width and starts a new row. Its items share the columns
     of the list (subgrid); rows are as tall as the tallest one per group. */
  .gridselect__items:has(> .gridselect__group) {
    grid-auto-rows: auto;
  }

  /* Keeps the item under the cursor (and its outline) below the sticky heading when the arrow
     keys scroll it into view: heading height plus room for the outline. */
  .gridselect__scroller:has(.gridselect__group-label) {
    scroll-padding-top: calc(1.2em + 0.5rem + var(--gs-focus-width) + 4px);
  }

  .gridselect__group {
    display: grid;
    grid-column: 1 / -1;
    grid-template-columns: subgrid;
    grid-template-rows: auto;
    grid-auto-rows: 1fr;
    gap: var(--gs-gap);
  }

  .gridselect__items--list .gridselect__group {
    grid-auto-rows: auto;
  }

  .gridselect__items--flow .gridselect__group {
    display: flex;
    flex: 1 1 100%;
    flex-wrap: wrap;
  }

  /* The list below pinned and recent entries */
  [data-gridselect-top] + [data-gridselect-section] {
    margin-top: 0.25rem;
    padding-top: calc(var(--gs-gap) + 0.25rem);
    border-top: 1px solid var(--gs-subtle-border, var(--gs-border));
  }

  .gridselect__group-label {
    grid-column: 1 / -1;
    flex: 1 1 100%;
    /* stays at the top while its group scrolls by */
    position: sticky;
    top: 0;
    z-index: 1;
    padding: 0.35rem 0.25rem 0.15rem;
    background: var(--gs-bg);
    color: var(--gs-muted);
    font-size: 0.8125em;
    font-weight: 600;
  }

  .gridselect__item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    min-height: var(--gs-item-min-height);
    padding: var(--gs-item-padding);
    border: 1px solid var(--gs-border);
    border-radius: var(--gs-radius);
    background: var(--gs-item-bg);
    color: var(--gs-fg);
    overflow-wrap: anywhere;
    cursor: pointer;
  }

  .gridselect__items--list .gridselect__item {
    border-radius: 0.5rem;
  }

  .gridselect__item:hover {
    border-color: var(--gs-accent);
  }

  .gridselect__item[aria-selected="true"] {
    border-color: var(--gs-accent);
    background: var(--gs-accent);
    color: var(--gs-accent-fg);
    font-weight: 600;
  }

  .gridselect__item[data-cursor] {
    outline: var(--gs-focus-width) solid var(--gs-accent);
    outline-offset: 2px;
  }

  .gridselect__item[data-match] {
    color: var(--gs-accent-text);
    font-weight: 700;
  }

  .gridselect__item[data-match][aria-selected="true"] {
    color: var(--gs-accent-fg);
  }

  .gridselect__item[data-dimmed] {
    color: var(--gs-muted);
    font-weight: 400;
  }

  .gridselect__item[aria-disabled="true"] {
    color: var(--gs-muted);
    text-decoration: line-through;
    cursor: not-allowed;
  }

  /* At the limit of a multiple choice: locked for now, so muted but not struck through */
  [data-gridselect] > label[data-limit],
  .gridselect__item[data-limit] {
    color: var(--gs-muted);
    text-decoration: none;
    cursor: not-allowed;
  }

  /* Second line of an entry */
  [data-gridselect-description] {
    display: block;
    color: var(--gs-muted);
    font-size: 0.8125em;
    font-weight: 400;
  }

  [data-gridselect] > label:has(> [data-gridselect-description]) {
    flex-wrap: wrap;
  }

  .gridselect__item:has([data-gridselect-description]) {
    align-items: flex-start;
  }

  [data-gridselect] > label > [data-gridselect-description] {
    flex-basis: 100%;
  }

  [data-gridselect] > label:has(:checked) > [data-gridselect-description],
  .gridselect__item[aria-selected="true"] [data-gridselect-description] {
    color: inherit;
  }

  .gridselect__empty {
    padding: 0.5rem 0.25rem 0;
    color: var(--gs-muted);
  }

  /* Digit badge: round, at the start of the item, modifier letters before the digit */
  .gridselect__key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    /* wide enough for "S1", so labels after one- and two-character badges line up */
    min-width: 1.75rem;
    min-height: 1.5rem;
    margin-inline-start: -0.45rem;
    padding: 0 0.35rem;
    box-sizing: border-box;
    border-radius: 999px;
    background: var(--gs-key-bg);
    color: var(--gs-key-fg);
    font: 600 0.75rem/1 ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    font-variant-numeric: tabular-nums;
    text-decoration: none;
  }

  .gridselect__key[data-prefix]::before {
    content: attr(data-prefix);
  }

  .gridselect__key:empty {
    display: none;
  }

  .gridselect__item[aria-selected="true"] > .gridselect__key,
  [data-gridselect] > label:has(:checked) > .gridselect__key {
    background: var(--gs-key-selected-bg);
    color: var(--gs-accent-fg);
  }
}