.variation-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}
.variation-table th, .variation-table td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: center;
}
.subtotal, .grand-total {
    font-weight: bold;
}
.qty-error {
    font-size: 11px;
    color: red;
}
#bulk-loader {
    text-align: center;
    font-weight: bold;
}
#bulk-success {
    margin-top: 15px;
    text-align: center;
}
.view-cart-btn {
    margin-left: 10px;
}

#bulk-loader {
    text-align: center;
    font-weight: bold;
    font-size: 16px;
}

.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 22px;
    height: 22px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 10px;
    vertical-align: middle;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}