/* Memory Match Specific Styles */
.memory-grid-wrapper {
  padding: 1.5rem;
  min-height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.memory-board {
  display: grid;
  gap: 1rem;
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  perspective: 1000px;
}

.memory-board[data-diff="easy"] {
  grid-template-columns: repeat(4, 1fr);
}

.memory-board[data-diff="medium"] {
  grid-template-columns: repeat(4, 1fr);
}

.memory-board[data-diff="hard"] {
  grid-template-columns: repeat(6, 1fr);
}

.memory-card {
  position: relative;
  aspect-ratio: 1 / 1;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.memory-card.flipped,
.memory-card.matched {
  transform: rotateY(180deg);
}

.memory-card.matched {
  cursor: default;
  opacity: 0.85;
}

.card-face {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.25rem;
  user-select: none;
  box-shadow: var(--shadow-md);
}

.card-front {
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  color: var(--primary);
  border-color: var(--border-hover);
}

.card-back {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  transform: rotateY(180deg);
  color: #FFFFFF;
}

.star-rating {
  font-size: 1.25rem;
  color: #F59E0B;
  letter-spacing: 2px;
}

@media (max-width: 500px) {
  .memory-card {
    font-size: 1.5rem;
  }
  .memory-board[data-diff="hard"] {
    grid-template-columns: repeat(4, 1fr);
  }
}