/* Shared styles for the board games: Memory match, 2048 and Tic-tac-toe. Snake keeps its own file. */
.gm-game [hidden] { display: none !important; }

.gm-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 0 0 14px; }
.gm-stats .stat { padding: 10px 12px; }
.gm-stats .stat b { font-size: clamp(22px, 6vw, 30px); }
.gm-stats.gm-two { grid-template-columns: repeat(2, 1fr); }

.gm-choices { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 14px; }
.gm-choices .chip { font-size: 15px; }

.gm-board { position: relative; width: 100%; max-width: 420px; margin-inline: auto; }
.gm-status { min-height: 1.5em; margin: 14px 0 0; text-align: center; color: var(--muted); }
.gm-actions { justify-content: center; margin-top: 14px; }
.gm-actions .btn { min-width: 120px; }

.gm-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 12px;
  padding: 18px;
  text-align: center;
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}
.gm-veil p { margin: 0; max-width: 30ch; }

/* Memory match */
.mm-grid { display: grid; grid-template-columns: repeat(var(--cols, 4), 1fr); gap: 8px; }
.mm-card {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: 0;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  font-size: clamp(20px, 6vw, 32px);
  line-height: 1;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease;
}
.mm-card:not(.is-open)::before { content: "?"; color: var(--muted); font-family: var(--font-head); font-weight: 800; font-size: 0.8em; }
.mm-card:not(.is-open):hover { background: var(--line); }
.mm-card.is-open { background: var(--surface); }
.mm-card.is-match { border-color: var(--gold); background: color-mix(in srgb, var(--gold) 22%, var(--surface)); cursor: default; }
.mm-card:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* 2048 */
.t2048-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  aspect-ratio: 1 / 1;
  padding: 10px;
  border-radius: 12px;
  background: var(--surface-2);
  touch-action: none;
}
.t2048-cell {
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--text) 7%, transparent);
  color: var(--text);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 8vw, 40px);
  line-height: 1;
}
.t2048-cell.v2 { background: #eee4da; color: #776e65; }
.t2048-cell.v4 { background: #ede0c8; color: #776e65; }
.t2048-cell.v8 { background: #f2b179; color: #f9f6f2; }
.t2048-cell.v16 { background: #f59563; color: #f9f6f2; }
.t2048-cell.v32 { background: #f67c5f; color: #f9f6f2; }
.t2048-cell.v64 { background: #f65e3b; color: #f9f6f2; }
.t2048-cell.v128 { background: #edcf72; color: #f9f6f2; font-size: clamp(20px, 6vw, 32px); }
.t2048-cell.v256 { background: #edcc61; color: #f9f6f2; font-size: clamp(20px, 6vw, 32px); }
.t2048-cell.v512 { background: #edc850; color: #f9f6f2; font-size: clamp(20px, 6vw, 32px); }
.t2048-cell.v1024 { background: #edc53f; color: #f9f6f2; font-size: clamp(16px, 5vw, 26px); }
.t2048-cell.v2048 { background: #edc22e; color: #f9f6f2; font-size: clamp(16px, 5vw, 26px); }
.t2048-cell.vbig { background: #3c3a32; color: #f9f6f2; font-size: clamp(14px, 4.4vw, 22px); }
.t2048-cell.pop { animation: t2048-pop .16s ease-out; }
@keyframes t2048-pop { from { transform: scale(.7); } to { transform: scale(1); } }
@media (prefers-reduced-motion: reduce) { .t2048-cell.pop { animation: none; } }

/* Tic-tac-toe */
.ttt-wrap { max-width: 340px; }
.ttt-board { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; aspect-ratio: 1 / 1; }
.ttt-cell {
  display: grid;
  place-items: center;
  padding: 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(44px, 18vw, 76px);
  line-height: 1;
  cursor: pointer;
}
.ttt-cell:not(:disabled):hover { background: var(--line); }
.ttt-cell:disabled { cursor: default; }
.ttt-cell.is-x { color: var(--gold); }
.ttt-cell.is-win { background: color-mix(in srgb, var(--gold) 25%, var(--surface-2)); }
.ttt-cell:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* Top row: the stats, with the full-screen button at its corner. */
.gm-top { display: flex; align-items: stretch; gap: 12px; margin-bottom: 14px; }
.gm-top .gm-stats { flex: 1; min-width: 0; margin: 0; }
.gm-fs { flex: none; width: 56px; padding: 0; display: grid; place-items: center; }
.gm-fs svg { width: 22px; height: 22px; }

/* Settings, opened from the Settings button under the board. */
.gm-settings { display: grid; gap: 16px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.gm-set .gm-choices { justify-content: flex-start; margin: 0; }
.gm-veil h2 { font-size: clamp(30px, 6vw, 40px); }

/* Arrow buttons (2048): shown only on touch screens with the setting switched on. */
.gm-pad {
  display: none;
  width: min(300px, 100%);
  margin: 18px auto 0;
  grid-template-columns: repeat(3, 1fr);
  grid-template-areas: ". up ." "left . right" ". down .";
  gap: 10px;
}
.gm-game[data-pad="on"] .gm-pad { display: grid; }
.gm-pad .btn {
  height: 74px;
  padding: 0;
  font-size: 28px;
  line-height: 1;
  display: grid;
  place-items: center;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.gm-pad [data-dir="up"] { grid-area: up; }
.gm-pad [data-dir="down"] { grid-area: down; }
.gm-pad [data-dir="left"] { grid-area: left; }
.gm-pad [data-dir="right"] { grid-area: right; }

/* Full screen: the native API where the browser has it, otherwise the game fills the window. */
.gm-game:fullscreen, .gm-game.is-fill { margin: 0; border: 0; border-radius: 0; box-shadow: none; overflow: auto; }
.gm-game.is-fill { position: fixed; inset: 0; z-index: 2000; height: 100vh; height: 100dvh; box-sizing: border-box; }
.gm-game:fullscreen .gm-board, .gm-game.is-fill .gm-board { max-width: min(420px, max(200px, calc(100dvh - 330px))); }
.gm-game:fullscreen .gm-pad .btn, .gm-game.is-fill .gm-pad .btn { height: 60px; }

/* Taps on the cards should not wait for the double-tap zoom. */
.mm-card, .ttt-cell { touch-action: manipulation; }