/*
 * Dialogs (import, export) and the start position setup editor (WP04).
 * Tokens only (tokens.css); buttons, inputs and focus rings come from base.css.
 *
 * Dialogs: native <dialog> opened with showModal(), at most 560 px wide; below
 * 600 px a full-width sheet at the bottom of the screen.
 * Setup grid: its own look built from the board tokens, so it does not depend
 * on board.js (WP03). Pawn colour is never the only cue: every pawn shows its
 * value as a numeral, White pawns are outlined, and each square has a written
 * aria-label.
 */

/* ---------------------------------------------------------------- dialogs */

.dialog {
  width: min(560px, calc(100vw - 2 * var(--space-4)));
  max-height: calc(100dvh - 2 * var(--space-4));
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  overflow: auto;
}

.dialog--wide {
  width: min(48rem, calc(100vw - 2 * var(--space-4)));
}

.dialog::backdrop {
  background: var(--backdrop);
}

.dialog--drop {
  outline: var(--focus-ring-width) dashed var(--color-accent);
  outline-offset: -6px;
}

.dialog__body {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-5);
}

.dialog__help,
.setup__help {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.dialog__text {
  width: 100%;
  min-height: 12rem;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--line-height);
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
}

.dialog__text[readonly] {
  background: var(--color-surface-raised);
}

/* The selected line after an error stays visible while the box is focused. */
.dialog__text::selection {
  background: var(--board-square-highlight);
  color: var(--color-text);
}

.dialog__field {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.dialog__file {
  max-width: 100%;
}

/* Errors: a bordered list with a written "Not accepted:" or a located message;
 * the colour is an extra cue only. */
.dialog__errors {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  list-style: none;
  border: 1px solid var(--color-danger);
  border-left-width: 6px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-raised);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  overflow-wrap: anywhere;
}

.dialog__errors[hidden] {
  display: none;
}

.dialog__status {
  min-height: 1.5em;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.dialog__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2);
}

@media (max-width: 599px) {
  .dialog,
  .dialog--wide {
    width: 100vw;
    max-width: 100vw;
    max-height: 92dvh;
    margin: auto 0 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: 0;
  }

  .dialog__body {
    padding: var(--space-4);
  }

  .dialog__actions > button {
    flex: 1 1 auto;
  }
}

/* ----------------------------------------------------------- setup editor */

.setup {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
}

.setup__intro {
  color: var(--color-text-muted);
}

.setup-palette {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.setup-palette__item {
  padding-inline: var(--space-3);
}

/* Pressed state: border, weight and an inset ring, not colour alone. */
.setup-palette__item[aria-pressed="true"] {
  border-color: var(--color-accent);
  box-shadow: inset 0 0 0 2px var(--color-accent);
  font-weight: 700;
}

.setup__option {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  column-gap: var(--space-2);
}

.setup__option input[type="checkbox"] {
  min-height: 0;
  width: 1.25rem;
  height: 1.25rem;
}

.setup__option .setup__help {
  grid-column: 1 / -1;
}

.setup__layout {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  align-items: start;
}

.setup__panel {
  display: grid;
  gap: var(--space-3);
  flex: 1 1 14rem;
  min-width: 0;
}

.setup__subtitle {
  font-size: var(--text-md);
}

/* Grid: a coordinate column plus six squares, a coordinate row below. */
.setup-grid {
  display: grid;
  grid-template-columns: 1.25rem repeat(6, minmax(var(--touch-target), 1fr));
  width: min(100%, 26rem);
  flex: 0 1 26rem;
  touch-action: manipulation;
}

.setup-grid__coord {
  display: grid;
  place-items: center;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.setup-square {
  position: relative;
  aspect-ratio: 1;
  min-width: var(--touch-target);
  min-height: var(--touch-target);
  padding: 0;
  border: 0;
  border-radius: 0;
  display: grid;
  place-items: center;
}

.setup-square--light {
  background: var(--board-square-light);
}

.setup-square--dark {
  background: var(--board-square-dark);
}

.setup-square:hover {
  box-shadow: inset 0 0 0 3px var(--board-square-highlight);
}

.setup-square:focus-visible {
  outline-offset: -3px;
  z-index: 1;
}

.setup-square__stack {
  display: flex;
  flex-direction: column-reverse; /* bottom pawn last in the list order, drawn lowest */
  align-items: center;
}

.setup-square--stack .setup-pawn + .setup-pawn {
  margin-bottom: -0.9em; /* pawns overlap like a pile */
}

.setup-square__count {
  position: absolute;
  top: 2px;
  right: 3px;
  min-width: 1.1rem;
  padding: 0 0.2rem;
  border-radius: var(--radius-round);
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  line-height: 1.1rem;
}

/* A pawn: a disc with its value. Black is filled; White is light with a dark
 * outline (shape and stroke, not fill alone). */
.setup-pawn {
  display: inline-grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-round);
  font-weight: 700;
  font-size: var(--text-sm);
  line-height: 1;
}

.setup-pawn--black {
  background: var(--pawn-black-fill);
  color: var(--pawn-black-stroke);
  border: 2px solid var(--pawn-black-stroke);
}

.setup-pawn--white {
  background: var(--pawn-white-fill);
  color: var(--pawn-white-stroke);
  border: 2px solid var(--pawn-white-stroke);
}

.setup-palette__item .setup-pawn,
.setup-counts__item .setup-pawn {
  width: 1.5rem;
  height: 1.5rem;
  font-size: var(--text-xs);
}

/* Counters: "Black 2: 4 of 6 (2 missing)"; the note is the cue, colour helps. */
.setup-counts {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr));
  gap: var(--space-1) var(--space-3);
}

.setup-counts__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-variant-numeric: tabular-nums;
}

.setup-counts__item[data-status="under"],
.setup-counts__item[data-status="over"] {
  font-weight: 700;
}

.setup-counts__note {
  color: var(--color-danger);
  font-weight: 400;
}

.setup__warning {
  padding: var(--space-3);
  border: 1px solid var(--label-inaccuracy);
  border-left-width: 6px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-raised);
}

.setup__warning[hidden] {
  display: none;
}

.setup__side {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.setup__radio {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: var(--touch-target);
}

.setup__radio input {
  min-height: 0;
  width: 1.25rem;
  height: 1.25rem;
}

.setup__actions,
.setup__sample {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.setup__sample select {
  max-width: 100%;
}

.setup__paste {
  display: grid;
  gap: var(--space-2);
}

.setup__paste > summary {
  min-height: var(--touch-target);
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--color-accent);
}

.setup__paste[open] {
  display: grid;
  gap: var(--space-2);
}

.setup__check {
  font-weight: 600;
}