/* Memory match — local only */

.mm-layout {
  display: grid;
  gap: 1.1rem;
  margin-top: 0.35rem;
}

.mm-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
  justify-content: space-between;
}

.mm-stat {
  flex: 0 0 auto;
}

.mm-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  width: 100%;
  max-width: 26rem;
  margin: 0 auto;
  perspective: 800px;
  position: relative;
  z-index: 1; /* Ensure cards stay clickable above any panel chrome */
  padding: 6px 0;
}

.mm-card {
  position: relative;
  aspect-ratio: 1;
  padding: 0;
  display: block;
  border: none;
  border-radius: 0.65rem;
  cursor: pointer;
  background: transparent;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
  pointer-events: auto;
  overflow: hidden;
}

.mm-card:focus-visible {
  outline: none;
  box-shadow: var(--ring-offset, 0 0 0 2px var(--surface)), var(--ring, 0 0 0 3px rgba(37, 99, 235, 0.35));
  border-radius: 0.65rem;
}

.mm-card-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: transform 0.38s cubic-bezier(0.34, 1.1, 0.64, 1);
  border-radius: 0.65rem;
  box-shadow: 0 4px 14px rgba(12, 18, 34, 0.1);
  transform: translateZ(0); /* helps browsers render 3D transforms consistently */
  z-index: 2;
}

.mm-card:hover .mm-card-inner {
  transform: translateZ(0) translateY(-1px);
}

.mm-card:active .mm-card-inner {
  transform: translateZ(0) translateY(0);
}

.mm-card--flipped .mm-card-inner,
.mm-card--matched .mm-card-inner {
  transform: none !important; /* avoid broken/blank 3D rendering */
  -webkit-transform: none !important;
}

.mm-card-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.65rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  z-index: 1;
  font-size: clamp(1.5rem, 7vw, 2rem);
  line-height: 1;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.mm-card-face{
  backface-visibility: visible;
  -webkit-backface-visibility: visible;
}

.mm-card-face--back {
  background: linear-gradient(
      145deg,
      var(--mm-back-a, #6366f1),
      var(--mm-back-b, #4338ca)
    ) !important;
  color: #fff !important;
  font-weight: 800;
  font-size: 1.1rem; /* make unflipped tiles obvious */
  letter-spacing: 0.06em;
  border: 2px solid rgba(45, 42, 38, 0.1);
  opacity: 1;
  visibility: visible !important;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.12);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 10px 20px rgba(67, 56, 202, 0.18);
  transform: translateZ(0) scale(1);
}

.mm-card-face--front {
  background: radial-gradient(
      circle at 30% 20%,
      var(--mm-front-tint, rgba(232, 93, 68, 0.14)),
      var(--surface) 58%
    );
  border: 2px solid var(--mm-front-border, var(--border));
  transform: translateZ(0) scale(1);
  color: var(--ink);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.14);
  font-size: clamp(1.7rem, 7vw, 2.4rem);
  opacity: 0 !important;
  visibility: hidden !important;
}

.mm-card--matched .mm-card-face--front {
  border-color: rgba(22, 163, 74, 0.45);
  background: radial-gradient(
      circle at 30% 20%,
      rgba(22, 163, 74, 0.22),
      var(--surface) 58%
    );
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateZ(0) scale(1.02);
  box-shadow:
    0 0 0 2px rgba(22, 163, 74, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 14px 26px rgba(22, 163, 74, 0.12);
}

.mm-card--flipped .mm-card-face--back {
  opacity: 0 !important;
  visibility: hidden;
  transform: translateZ(0) scale(0.98);
}

.mm-card--flipped .mm-card-face--front {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateZ(0) scale(1.04);
}

.mm-card-face--back {
  visibility: visible;
}

.mm-card--matched .mm-card-face--back {
  opacity: 0 !important;
  visibility: hidden !important;
}

.mm-card--matched {
  cursor: default;
  pointer-events: none;
}

.mm-actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

.mm-status {
  text-align: center;
  min-height: 1.4em;
  font-size: 0.92rem;
  font-weight: 650;
  color: var(--muted);
}

.mm-hint {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 380px) {
  .mm-grid {
    gap: 8px;
  }
}