.card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .card {
        padding: 15px;
        border-radius: 6px;
    }
}