.card {
    width: 80px;
    height: 112px;
    background-color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    transition: transform var(--transition-normal);
    border: 2px solid #ddd;
}

.card:hover {
    transform: translateY(-4px);
}

.card.card-back {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
}

.card.card-back::before {
    content: '';
    position: absolute;
    width: 60%;
    height: 80%;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
}

.card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.card-rank {
    font-size: var(--font-2xl);
    font-weight: bold;
    line-height: 1;
}

.card-suit {
    font-size: var(--font-3xl);
    line-height: 1;
}

.card.hearts .card-rank,
.card.hearts .card-suit,
.card.diamonds .card-rank,
.card.diamonds .card-suit {
    color: var(--color-hearts);
}

.card.clubs .card-rank,
.card.clubs .card-suit,
.card.spades .card-rank,
.card.spades .card-suit {
    color: var(--color-clubs);
}

/* Card size variations for mobile */
@media (max-width: 768px) {
    .card {
        width: 60px;
        height: 84px;
    }

    .card-rank {
        font-size: var(--font-xl);
    }

    .card-suit {
        font-size: var(--font-2xl);
    }
}

@media (max-width: 480px) {
    .card {
        width: 50px;
        height: 70px;
    }

    .card-rank {
        font-size: var(--font-lg);
    }

    .card-suit {
        font-size: var(--font-xl);
    }
}

/* Card flip animation */
.card.flipping {
    animation: cardFlip var(--transition-slow) ease-in-out;
}

@keyframes cardFlip {
    0% {
        transform: rotateY(0deg);
    }
    50% {
        transform: rotateY(90deg);
    }
    100% {
        transform: rotateY(0deg);
    }
}