.game-board {
    display: grid;
    grid-template-columns: repeat(4, 100px); /* Example grid */
    gap: 10px;
    perspective: 1000px; /* For 3D flip effect */
}

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

.card.flipped {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
}

.card-back {
    background-color: #ccc;
}

.card-front {
    background-color: #fff;
    transform: rotateY(180deg);
}