/* Memory — panels, buttons and status come from shared/games.css. */

.mm-wrap {
  width: 100%;
  max-width: 640px;
  padding: 10px;
  background: var(--gm-surface, #1b2740);
  border: 1px solid var(--gm-line, rgba(255, 255, 255, 0.09));
  border-radius: var(--gm-radius, 12px);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.7);
}

.mm-grid {
  display: grid;
  gap: 8px;
  margin: 0 auto;
  grid-template-columns: repeat(4, 1fr);
  max-width: 520px;
}

.mm-grid[data-size="24"] { grid-template-columns: repeat(6, 1fr); max-width: 620px; gap: 6px; }

.mm-card {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
  min-width: 44px;
  min-height: 44px;
  aspect-ratio: 1;
  background: transparent;
  border: 0;
  cursor: pointer;
  perspective: 600px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.mm-card:focus-visible {
  outline: 3px solid var(--gm-accent-bright, #e0584a);
  outline-offset: 2px;
  border-radius: 10px;
}

.mm-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.4s ease;
}

.mm-card.is-open .mm-inner,
.mm-card.is-matched .mm-inner { transform: rotateY(180deg); }

.mm-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.mm-back {
  background:
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.16) 0 6px, transparent 6px 12px),
    var(--gm-accent, #c0392b);
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.28), 0 3px 6px rgba(0, 0, 0, 0.35);
}

.mm-card:hover:not(:disabled) .mm-back { filter: brightness(1.12); }

.mm-front {
  transform: rotateY(180deg);
  background: var(--gm-sq-light, #e9e0cc);
  box-shadow: inset 0 0 0 2px var(--gm-sq-dark, #6b3a44), 0 3px 6px rgba(0, 0, 0, 0.35);
}

.mm-card.is-matched .mm-front {
  box-shadow: inset 0 0 0 3px var(--gm-accent-bright, #e0584a), 0 3px 6px rgba(0, 0, 0, 0.35);
}

.mm-card.is-matched { cursor: default; }

.mm-front svg { width: 78%; height: 78%; display: block; }

.mm-front .a { fill: var(--gm-accent, #c0392b); }
.mm-front .d { fill: var(--gm-sq-dark, #6b3a44); }
.mm-front .k { fill: var(--gm-piece-b, #14161c); }
.mm-front .l { fill: var(--gm-piece-w, #f7f3ea); stroke: var(--gm-sq-dark, #6b3a44); stroke-width: 1; }
.mm-front .sd { fill: none; stroke: var(--gm-sq-dark, #6b3a44); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.mm-front .sa { fill: none; stroke: var(--gm-accent, #c0392b); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.mm-front .sl { fill: none; stroke: var(--gm-piece-w, #f7f3ea); stroke-width: 2; stroke-linecap: round; }

.gm-seg button, .gm-actions .gm-btn { min-height: 44px; }

@media (max-width: 480px) {
  .mm-wrap { padding: 6px; }
  .mm-grid { gap: 6px; }
  .mm-grid[data-size="24"] { gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  .mm-inner { transition: none; transform: none !important; }
  .mm-face { transition: opacity 0.15s ease; }
  .mm-front { transform: none; opacity: 0; }
  .mm-card.is-open .mm-front, .mm-card.is-matched .mm-front { opacity: 1; }
  .mm-card.is-open .mm-back, .mm-card.is-matched .mm-back { opacity: 0; }
}