.wc-category-quantity-message {
    font-size: 0.9em;
    color: #666;
    margin: 10px 0;
    padding: 8px 12px;
    background-color: #f8f8f8;
    border-left: 4px solid #0073aa;
    border-radius: 3px;
}

.wc-category-quantity-message.error {
    color: #dc3232;
    border-left-color: #dc3232;
    background-color: #fef7f7;
}

.wc-category-quantity-message.success {
    color: #46b450;
    border-left-color: #46b450;
    background-color: #f0f8f0;
}

.quantity input.qty {
    border-color: #ddd;
}

.quantity input.qty:focus {
    border-color: #0073aa;
    box-shadow: 0 0 0 1px #0073aa;
}