/* Sliding Tiles — own styles, theme variables only. */

.slt {
  width: 100%;
  max-width: 520px;
}

.slt-wrap {
  padding: 8px;
  border-radius: var(--gm-radius, 12px);
  background: var(--gm-surface, #1b2740);
  border: 1px solid var(--gm-line, rgba(255, 255, 255, 0.09));
}

.slt-board {
  --n: 4;
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  container-type: size;
  border-radius: 8px;
  background: var(--gm-bg-2, #131c2b);
  outline-offset: 3px;
}

.slt-tile {
  appearance: none;
  -webkit-appearance: none;
  position: absolute;
  box-sizing: border-box;
  padding: 3px;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: left 0.14s ease-out, top 0.14s ease-out;
  font: inherit;
  color: var(--gm-text, #f2eee6);
}

.slt-tile span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  border-radius: 8px;
  background: var(--gm-surface-2, #22304a);
  border: 1px solid var(--gm-line-2, rgba(255, 255, 255, 0.16));
  font-family: var(--gm-display, "Fraunces", Georgia, serif);
  font-weight: 600;
  font-size: calc(44cqw / var(--n));
  font-variant-numeric: tabular-nums;
  line-height: 1;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.slt-tile:hover span {
  border-color: var(--gm-accent-bright, #e0584a);
}

.slt-tile:focus-visible {
  outline: 2px solid var(--gm-accent-bright, #e0584a);
  outline-offset: -2px;
}

.slt-tile.is-home span {
  background: var(--gm-accent-soft, rgba(192, 57, 43, 0.2));
  border-color: var(--gm-accent-line, rgba(192, 57, 43, 0.42));
}

.slt-board:focus-visible {
  outline: 2px solid var(--gm-accent-bright, #e0584a);
}

.slt-board.is-solved .slt-tile { cursor: default; }
.slt-board.is-solved .slt-tile span {
  background: var(--gm-accent, #c0392b);
  border-color: var(--gm-accent, #c0392b);
  color: #fff;
}

@media (prefers-reduced-motion: reduce) {
  .slt-tile,
  .slt-tile span { transition: none; }
}