/* Memory Match Game Specific Styles */
.game-board {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    max-width: 900px;
    margin: 0 auto;
}

.card {
    aspect-ratio: 1;
    perspective: 1000px;
    cursor: pointer;
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.5s;
    transform-style: preserve-3d;
}

.card.flipped .card-inner { transform: rotateY(180deg); }
.card.matched .card-inner { transform: rotateY(180deg); }
.card.matched { pointer-events: none; }

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    text-align: center;
    font-size: 0.75rem;
    line-height: 1.3;
}

.card-front {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-size: 2rem;
}

.card-back {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    transform: rotateY(180deg);
    color: #000;
    font-weight: 500;
}

.card-back.definition {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.card.matched .card-back {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

@media (max-width: 600px) {
    .game-board { grid-template-columns: repeat(4, 1fr); }
    .card-back { font-size: 0.65rem; }
}