.flip-card {
    width: 100%;
    max-width: 180px;
    margin: 0 auto;
    perspective: 1200px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 5;
    transform-style: preserve-3d;
    transition: transform 700ms cubic-bezier(0.2, 0.85, 0.35, 1);
}

.flip-card-inner.is-flipping {
    will-change: transform;
}

.flip-card-inner.is-revealed {
    transform: rotateY(180deg);
}

.flip-card-face {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    backface-visibility: hidden;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.flip-card-face img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.flip-card-back img.zener-card-back,
.card-back img.zener-card-back {
    filter: none;
}

.flip-card-front {
    transform: rotateY(180deg);
}

@media (prefers-reduced-motion: reduce) {
    .flip-card-inner {
        transition-duration: 10ms;
    }
}