.dhcb-bulkup-container {
    margin: 20px 0;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: #fafafa;
}
.dhcb-bulkup-description {
    margin-bottom: 15px;
    font-size: 0.9em;
    color: #555;
}
.dhcb-bulkup-item {
    margin: 15px 0;
    padding: 10px;
    background: #fff;
    border-radius: 4px;
    border: 1px solid #eee;
}
.dhcb-bulkup-item-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-weight: 600;
}
.dhcb-base-quantity {
    color: #777;
    font-weight: normal;
    font-size: 0.9em;
}
.dhcb-bulkup-options {
    padding-left: 10px;
}
.dhcb-bulkup-option {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 20px;
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}
.dhcb-bulkup-option:last-child {
    border-bottom: none;
}
.dhcb-option-label {
    font-weight: 500;
    min-width: 80px;
}
.dhcb-option-price {
    color: #2c3e50;
}
.dhcb-option-saving {
    color: #27ae60;
    font-size: 0.9em;
    margin-left: 5px;
}
.dhcb-option-selector {
    display: flex;
    align-items: center;
    gap: 5px;
}
.dhcb-option-selector input[type="number"] {
    width: 70px;
    padding: 4px 6px;
    border: 1px solid #ccc;
    border-radius: 3px;
}
.dhcb-qty-suffix {
    font-size: 0.85em;
    color: #888;
}
.dhcb-bulkup-total {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 2px solid #ddd;
    text-align: right;
    font-weight: 600;
    font-size: 1.1em;
}
@media (max-width: 768px) {
    .dhcb-bulkup-option {
        flex-direction: column;
        align-items: flex-start;
    }
    .dhcb-option-selector {
        width: 100%;
        justify-content: flex-start;
    }
}