.coin-scene {
    width: 400px;
    height: 400px;
    margin: 40px auto;
    perspective: 1000px;
}

.coin {
    width: 400px;
    height: 400px;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 1.6s ease-out;
}

.coin-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 50%;
}

.coin-face img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* Heads = front */
.heads {
    transform: rotateY(0deg);
}

/* Tails = back */
.tails {
    transform: rotateY(180deg);
}

.hidden {
    opacity: 0;
    visibility: hidden;
}

.show {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.6s ease-in;
}