/* The Hex frame is shared by every playable puzzle. */
.puzzle-game { --game-canvas-background: var(--paper); width: 100%; max-width: 560px; margin: 0 auto; color: var(--ink); font: 14px/1.6 var(--sans); }
.puzzle-game:is(.is-solved, [data-solved='true'], [data-klotski-solved='true']) { --game-canvas-background: color-mix(in srgb, var(--tint) 35%, var(--paper)); }
.puzzle-game *, .puzzle-game *::before, .puzzle-game *::after { box-sizing: border-box; }
.puzzle-game [hidden] { display: none !important; }
.graph-widget.puzzle-game { max-width: 560px; border-radius: 9px; }
.puzzle-page:has(.puzzle-game) .puzzle-shell { width: min(660px, 100%); padding: 20px 24px 36px; }
.puzzle-page:has(.puzzle-game) .puzzle-heading { width: 100%; max-width: 560px; margin: 0 auto 18px; }
.puzzle-page:has(.puzzle-game) .puzzle-heading h1 { margin: 0; font: 500 30px/1.3 var(--sans); letter-spacing: 0; }
.puzzle-game .game-canvas { border: 1px solid var(--line); border-radius: 8px; }
.puzzle-game .game-surface { min-width: 0; padding: 12px 16px 20px; background: var(--game-canvas-background); transition: background-color .2s; }
.puzzle-game .game-canvas > .game-surface:first-child { border-radius: 7px 7px 0 0; }
.puzzle-game .game-footer { padding: 10px; border-top: 1px solid var(--line); }
.puzzle-game .game-status { display: flex; align-items: center; justify-content: center; gap: 7px; min-height: 32px; margin: 0; padding: 4px 0; color: var(--green); font: 400 13px/1.6 var(--sans); text-align: center; }
.puzzle-game .game-status::before { content: ''; flex: 0 0 6px; width: 6px; height: 6px; border-radius: 50%; background: var(--game-feedback-color, var(--green)); }
.puzzle-game .game-controls { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.puzzle-game .game-controls .puzzle-icon-button[data-puzzle-icon] { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 44px; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 4px; background: transparent; color: var(--ink); touch-action: manipulation; }
.puzzle-game .game-controls .puzzle-icon-button:not(:disabled):hover { background: color-mix(in srgb, var(--tint) 50%, var(--paper)); color: var(--green); }
.puzzle-game .game-controls .puzzle-icon-button:is([aria-expanded='true'], [aria-pressed='true']) { background: color-mix(in srgb, var(--tint) 50%, var(--paper)); color: var(--green); }
.puzzle-game .game-controls .puzzle-icon-button .icon { width: 19px; height: 19px; stroke-width: 2.3; stroke-linecap: round; stroke-linejoin: round; }
.puzzle-game .game-controls .puzzle-icon-button::after { top: calc(100% + 6px); bottom: auto; }
.puzzle-game .game-controls .puzzle-icon-button:disabled { opacity: 1; color: var(--muted); }
.puzzle-game .game-controls .puzzle-icon-button:disabled .icon { opacity: .5; }
.puzzle-game .widget-support-panel { margin-top: 16px; padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); color: var(--muted); font: 400 13px/1.7 var(--sans); }
.puzzle-game .game-help h2 { margin: 0 0 10px; color: var(--ink); font: 500 15px/1.5 var(--sans); }
.puzzle-game .widget-progress-reset { padding-top: 0; border-top: 0; }
.puzzle-game .widget-slider-setting:has(select) { display: grid; grid-template-columns: minmax(0, 1fr) minmax(150px, 46%); align-items: center; gap: 0 16px; margin-bottom: 8px; }
.puzzle-game .widget-slider-setting:has(select) .site-dropdown, .puzzle-game .widget-slider-setting select { margin-top: 0; }
.puzzle-game .widget-slider-setting > p { grid-column: 1 / -1; margin: 4px 0 0; font-size: 12px; }
.puzzle-game .game-primary { min-height: 44px; padding: 8px 16px; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); color: var(--ink); font: 13px/1.5 var(--sans); }
.puzzle-game .game-primary:not(:disabled):hover { border-color: var(--green); background: var(--tint); }
@media (max-width: 500px) {
  .puzzle-page:has(.puzzle-game) .puzzle-shell { padding: 12px 16px 28px; }
  .puzzle-game .game-controls { gap: 2px; }
  .puzzle-game .game-surface { padding: 10px 10px 16px; }
}
@media (max-width: 380px) {
  .puzzle-game .widget-support-panel { padding: 14px; }
  .puzzle-game .widget-slider-setting:has(select) { grid-template-columns: minmax(0, 1fr) 145px; gap: 0 10px; }
}
@media (prefers-reduced-motion: reduce) { .puzzle-game .game-surface { transition: none; } }

/* Shared 50-puzzle browser. */
.puzzle-picker { margin: 12px 0; }
.puzzle-picker-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 12px; }
.puzzle-picker-heading h2 { margin: 0; color: var(--ink); font: 500 15px/1.5 var(--sans); }
.puzzle-page-controls { display: flex; align-items: center; gap: 4px; font-variant-numeric: tabular-nums; }
.puzzle-page-controls output { min-width: 92px; text-align: center; }
.puzzle-game .puzzle-page-button { display: grid; place-items: center; width: 44px; height: 44px; min-height: 44px; padding: 10px; border: 0; border-radius: 4px; background: transparent; color: var(--ink); }
.puzzle-page-button .icon { width: 17px; height: 17px; stroke-width: 2.3; }
.puzzle-page-button:first-child .icon { rotate: 180deg; }
.puzzle-game .puzzle-page-button:not(:disabled):hover { background: var(--tint); }
.puzzle-picker-key { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 4px 0 12px; font-size: 11px; }
.puzzle-picker-key > span { display: inline-flex; align-items: center; gap: 5px; }
.puzzle-picker-key i { color: var(--green); font-style: normal; }
.puzzle-number-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(44px, 1fr)); gap: 6px; }
.puzzle-game .puzzle-number { position: relative; height: 44px; min-height: 44px; padding: 6px; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); color: var(--muted); font: 400 13px/1 var(--sans); font-variant-numeric: tabular-nums; }
.puzzle-game .puzzle-number[data-completion='solved'] { background: var(--tint); color: var(--green); }
.puzzle-game .puzzle-number[data-completion='minimum'] { border-color: var(--green); background: var(--green); color: var(--paper); }
.puzzle-number-mark { position: absolute; top: 3px; right: 4px; font-size: 10px; }
.puzzle-game .puzzle-number[aria-current='true'] { outline: 1.5px solid var(--ink); outline-offset: 2px; }
.puzzle-game .puzzle-number:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.puzzle-game .puzzle-number:hover { border-color: var(--green); }
.puzzle-game .puzzle-completed { margin: 12px 0 0; font-size: 12px; }
@media (forced-colors: active) { .puzzle-number-mark { color: ButtonText; } }