.gk-product-addons {
    margin: 20px 0;
    padding: 18px;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    background: #fff;
}
.gk-product-addons h3 {
    margin: 0 0 8px;
}
.gk-addon-required-note {
    margin: 0 0 12px;
    font-size: 13px;
}
.gk-addon-list {
    display: grid;
    gap: 10px;
}
.gk-addon-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px;
    border: 1px solid #ddd;
    border-radius: 7px;
    cursor: pointer;
}
.gk-addon-option:hover {
    border-color: #999;
}
.gk-addon-option input {
    margin: 0;
}
.gk-addon-content {
    flex: 1;
}
.gk-addon-content strong,
.gk-addon-content small {
    display: block;
}
.gk-addon-content small {
    margin-top: 3px;
    opacity: .7;
}
.gk-addon-price {
    white-space: nowrap;
    font-weight: 600;
}
.gk-addon-summary {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid #eee;
}
.gk-addon-error {
    color: #b32d2e;
    margin-top: 8px;
    font-size: 13px;
}
#gk-addon-table input[type="text"],
#gk-addon-table input[type="number"] {
    width: 100%;
}
#gk-addon-table th,
#gk-addon-table td {
    vertical-align: middle;
}