/* A quiet place to play, with the same paper and colours as the notebook. */
.puzzle-page {
  --paper: #fcfcf9;
  --ink: #282e29;
  --muted: #686e66;
  --line: #e0e4dc;
  --green: #285b46;
  --tint: #e5ece2;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'SFMono-Regular', Consolas, monospace;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.6 var(--sans);
  color-scheme: light;
}
.puzzle-page *, .puzzle-page *::before, .puzzle-page *::after { box-sizing: border-box; }
.puzzle-page [hidden] { display: none !important; }
.puzzle-page button, .puzzle-page input { font: inherit; }
.puzzle-page button, .puzzle-page a, .puzzle-page label { -webkit-tap-highlight-color: transparent; }
.puzzle-page button { cursor: pointer; }
.puzzle-page button:disabled { cursor: default; opacity: .5; }
.puzzle-page a { color: inherit; text-underline-offset: 4px; }
.puzzle-page :focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }
.puzzle-page main:focus { outline: none; }
.puzzle-page .skip-link { position: fixed; top: -100px; left: 16px; z-index: 10; padding: 10px 18px; background: var(--green); color: #fff; }
.puzzle-page .skip-link:focus { top: 12px; }
.puzzle-shell { width: min(1100px, 100%); padding: 32px 42px 48px; margin: 0 auto; }
.puzzle-heading { margin-bottom: 30px; }
.puzzle-back { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; margin-bottom: 16px; font-size: 12px; text-decoration: none; color: var(--muted) !important; }
.puzzle-back:hover { color: var(--green) !important; }
.puzzle-heading h1 { margin: 0 0 5px; font: 52px/1.1 var(--serif); letter-spacing: -1.7px; }
/* Icon controls keep their names available on hover, focus and to assistive technology. */
.puzzle-actions { position: relative; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.puzzle-page .puzzle-icon-button { position: relative; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 44px; width: 44px; height: 44px; min-height: 44px; padding: 0; border: 1px solid var(--line); border-radius: 7px; background: var(--paper); color: var(--green); cursor: pointer; list-style: none; }
.puzzle-icon-button::-webkit-details-marker { display: none; }
.puzzle-icon-button::marker { content: ''; }
.puzzle-page .puzzle-icon-button:not(:disabled):hover, .puzzle-help[open] > summary { border-color: #b6c7b0; background: var(--tint); }
.puzzle-icon-button .icon { display: block; width: 22px; height: 22px; }
.puzzle-icon-button::after { content: attr(data-tooltip); position: absolute; left: 50%; bottom: calc(100% + 8px); transform: translateX(-50%); z-index: 20; width: max-content; max-width: 180px; padding: 5px 9px; border-radius: 5px; background: var(--ink); color: var(--paper); font: 12px/1.5 var(--sans); text-align: center; pointer-events: none; opacity: 0; visibility: hidden; }
.puzzle-icon-button:hover::after, .puzzle-icon-button:focus-visible::after { opacity: 1; visibility: visible; }
.puzzle-actions > :first-child::after { left: 0; transform: none; }
.puzzle-help > summary::after { left: 0; transform: none; }
.puzzle-action-confirm, .is-confirming .puzzle-action-default { display: none; }
.is-confirming .puzzle-action-confirm { display: inline; }
.puzzle-help { display: block; flex: 0 0 44px; }
.puzzle-help-content { position: absolute; top: calc(100% + 10px); left: 0; z-index: 15; width: min(320px, calc(100vw - 32px)); padding: 16px 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); box-shadow: 0 5px 20px #282e2914; color: var(--muted); font-size: 13px; line-height: 1.7; }
.puzzle-help-content p { margin: 0 0 12px; }
.puzzle-help-content p:last-child { margin-bottom: 0; }
.puzzle-sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip-path: inset(50%); white-space: nowrap; border: 0 !important; }
.hex-play { display: grid; grid-template-columns: minmax(0, 1fr) 258px; gap: 48px; align-items: start; }
.hex-play-area { grid-column: 1; grid-row: 1; min-width: 0; }
.hex-play .hex-settings { grid-column: 2; grid-row: 1; display: flex; flex-direction: column; align-items: stretch; gap: 22px; margin: 0; padding: 24px; background: #f4f5ef; border: 1px solid var(--line); border-radius: 8px; }
.hex-play .hex-game-info { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.hex-play [data-hex-count] { font: 11px/1.6 var(--mono); color: var(--muted); }
.hex-play .hex-caption { font-size: 12px; margin: 0; }
.hex-play .hex-board { max-width: 660px; margin: 10px auto 16px; }
.hex-board-viewport { min-width: 0; overflow-x: auto; overscroll-behavior-x: contain; padding: 4px; }
.hex-play .hex-board .hex-cell { font-size: clamp(11px, 1.3vw, 16px); }
.hex-play .hex-legend { gap: 10px 22px; }
.hex-play .hex-status { margin: 12px 0 14px; min-height: 1.7em; font-size: 14px; }
.hex-play .hex-actions { gap: 8px; }
.puzzle-page .secondary-button { padding: 10px 18px; border: 1px solid var(--green); border-radius: 4px; background: var(--green); color: #fff; font-size: 12px; }
.puzzle-page .secondary-button:hover { background: #1d4535; }
.puzzle-page .hex-secondary { border-color: var(--line); color: var(--ink); font: 12px var(--sans); }
.hex-play .hex-size-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 4px; }
.hex-play .hex-size-heading label { font: 13px/1.6 var(--sans); }
.hex-play .hex-size-heading output { color: var(--green); font: 12px/1.6 var(--mono); white-space: nowrap; }
.hex-play .hex-size-setting input { width: 100%; min-height: 44px; margin: 0; accent-color: var(--green); cursor: pointer; }
.hex-play .hex-mode-options { display: grid; gap: 8px; min-width: 0; padding: 0; margin: 0; border: 0; }
.hex-play .hex-mode-options legend { margin-bottom: 12px; padding: 0; font: 13px/1.6 var(--sans); }
.hex-play .hex-mode-option { position: relative; display: flex; align-items: center; gap: 10px; min-height: 64px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); cursor: pointer; }
.hex-play .hex-mode-option:has(input:checked) { border-color: var(--green); background: var(--tint); }
.hex-play .hex-mode-option:has(input:focus-visible) { outline: 2px solid var(--green); outline-offset: 3px; }
.hex-play .hex-mode-option input { position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.hex-play .hex-mode-option span { display: block; font-size: 13px; }
.hex-play .hex-mode-option small { display: block; color: var(--muted); font-size: 11px; line-height: 1.6; }

@media (forced-colors: active) {
  .hex-play .hex-mode-option:has(input:checked) { background: Highlight; color: HighlightText; border-color: Highlight; }
  .hex-play .hex-mode-option:has(input:checked) small { color: HighlightText; }
}
.hex-play noscript p { color: var(--muted); font-size: 13px; }

/* The catalog grows by adding an entry to _data/puzzles.yml. */
.puzzle-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: 24px; }
.puzzle-card { overflow: hidden; display: block; text-decoration: none; border: 1px solid var(--line); border-radius: 7px; background: #f8f9f4; }
.puzzle-card:hover { border-color: #becfba; background: var(--tint); }
.puzzle-card-art { display: grid; place-items: center; padding: 24px 18px 12px; background: var(--paper); }
.puzzle-card-art img { display: block; width: 100%; height: 190px; max-width: 300px; object-fit: contain; }
.puzzle-card-copy { padding: 23px; }
.puzzle-card-meta { color: var(--muted); font: 10px/1.7 var(--sans); }
.puzzle-card h2 { display: flex; justify-content: space-between; margin: 10px 0; font: 30px/1.2 var(--serif); letter-spacing: -.6px; }
.puzzle-card h2 > span { font: 20px var(--sans); color: var(--green); }
.puzzle-card p { margin: 0 0 22px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.puzzle-card-play { display: inline-flex; align-items: center; gap: 14px; color: var(--green); font-size: 12px; }
.puzzle-card-play .icon { width: 16px; }

@media (max-width: 760px) {
  .puzzle-shell { padding: 20px 24px 36px; }
  .puzzle-heading { margin-bottom: 24px; }
  .puzzle-heading h1 { font-size: 44px; }
  .hex-play { grid-template-columns: 1fr; gap: 24px; }
  .hex-play .hex-settings { grid-column: 1; grid-row: 1; display: grid; grid-template-columns: 1fr 1.5fr; gap: 12px 22px; padding: 18px; }
  .hex-play .hex-play-area { grid-row: 2; }
  .hex-play .hex-mode-options { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .hex-play .hex-mode-options legend { margin-bottom: 5px; }
  .hex-play .hex-mode-option { display: block; padding: 8px; }
  .hex-play .hex-mode-option span { font-size: 11px; }
  .hex-play .hex-mode-option small { font-size: 9px; }
  .hex-play .hex-board .hex-cell { font-size: 12px; }
  .puzzle-grid { grid-template-columns: 1fr; }
}
@media (max-width: 500px) {
  .puzzle-shell { padding: 12px 16px 28px; }
  .puzzle-back { margin-bottom: 10px; }
  .puzzle-heading { margin-bottom: 20px; }
  .hex-play .hex-settings { grid-template-columns: 1fr; gap: 16px; padding: 16px; }
  .hex-play .hex-mode-option { display: flex; align-items: center; gap: 6px; min-height: 60px; }
  .hex-play .hex-mode-option span { font-size: 12px; }
  .hex-play .hex-mode-option small { font-size: 11px; }
  .hex-play .hex-size-heading label { flex: initial; }
  .hex-play .hex-board .hex-cell { font-size: 10px; }
  .hex-play .hex-board { min-width: calc(var(--hex-size, 5) * 70px); }
  .hex-play .hex-legend { gap: 8px 12px; font-size: 10px; }
}