.qty-btn.pulse {
    animation: pulse 0.2s ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.color-size-card {
    transition: transform 0.2s ease-out;
}

.color-size-card.active {
    border: 2px solid #0066cc;
    box-shadow: 0 4px 12px rgba(0,102,204,0.15);
}

.selected-summary {
    transition: all 0.3s ease-out;
}

.price-row.total {
    position: relative;
    overflow: hidden;
}

.price-row.total::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
    animation: shine 2s infinite;
    transform: translateX(-100%);
}

@keyframes shine {
    to {
        transform: translateX(100%);
    }
}

.selected-item {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}