.sku-panel,
.form-panel,
.submit-panel {
    border-radius: 18px;
    border: 1px solid transparent;
}
.sku-panel {
    padding: 12px;
    background: var(--gradient-accent-card);
    border-color: var(--surface-accent-fill);
    margin-bottom: 10px;
}
.form-panel {
    padding: 12px;
    background: var(--gradient-info-card);
    border-color: var(--line-info-soft);
    margin-bottom: 10px;
}
.submit-panel {
    padding: 12px;
    background: var(--gradient-success-card);
    border-color: var(--line-success);
}
.compact-label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--muted);
}
.sku-chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.sku-chip {
    width: auto;
    min-width: 120px;
    flex: 1 1 0;
    padding: 10px 12px;
    border: 1px solid var(--line-dash);
    border-radius: 14px;
    background: var(--surface-card-elevated);
    cursor: pointer;
    transition: border-color .16s ease, box-shadow .16s ease, transform .16s ease, background .16s ease;
}
.sku-chip:hover {
    transform: translateY(-1px);
    border-color: var(--line-accent-hover);
}
.sku-chip.active {
    border-color: var(--line-accent-active);
    background: var(--gradient-accent-card);
    box-shadow: var(--shadow-accent-soft);
}
.sku-chip-title {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    text-align: center;
}
.order-fields {
    display: grid;
    gap: 10px;
}
.order-fields-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}
.order-fields .field {
    gap: 6px;
}
.order-fields label {
    font-size: 13px;
}
.order-fields input,
.order-fields select {
    padding: 11px 13px;
    border-radius: 12px;
    font-size: 14px;
}
.quantity-stepper {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) 42px;
    gap: 8px;
    align-items: center;
}
.quantity-stepper-button {
    min-height: 46px;
    border-radius: 12px;
    border: 1px solid var(--line-dash);
    background: var(--surface-card-elevated);
    color: var(--text);
    font-size: 20px;
    font-weight: 700;
    box-shadow: var(--shadow-control);
}
.quantity-stepper-button:disabled {
    cursor: not-allowed;
    opacity: .45;
    box-shadow: none;
}
.quantity-stepper [data-product-quantity] {
    text-align: center;
    font-weight: 700;
}
.quantity-inline-note {
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
}
.price-block {
    display: grid;
    gap: 6px;
}
.price-inline {
    min-height: 46px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 14px;
    font-size: 24px;
    font-weight: 800;
    color: var(--price-ink);
    letter-spacing: -.3px;
    border-radius: 14px;
    background: var(--surface-price);
    border: 1px solid var(--line-price);
}
.price-inline-sub {
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
}
.submit-panel .action-row {
    margin-top: 0;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
}
.submit-panel .action-row .button,
.submit-panel .action-row button {
    min-height: 42px;
    padding: 10px 18px;
    font-size: 14px;
}
.submit-panel .action-row > button[type="submit"] {
    flex: 0 1 auto;
}
.submit-payment-field {
    margin-left: auto;
    min-width: 0;
    flex: 0 0 auto;
}
.submit-payment-field select {
    width: auto;
    min-width: 86px;
    min-height: 38px;
    padding: 8px 28px 8px 12px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    color: #ffffff;
    border-color: transparent;
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 10px 7px;
    box-shadow: var(--shadow-control);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}
.submit-payment-field.select-alipay select {
    background-color: var(--payment-alipay);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23ffffff' d='M1.41.59 6 5.17 10.59.59 12 2l-6 6-6-6z'/%3E%3C/svg%3E");
}
.submit-payment-field.select-wechat select {
    background-color: var(--payment-wechat);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23ffffff' d='M1.41.59 6 5.17 10.59.59 12 2l-6 6-6-6z'/%3E%3C/svg%3E");
}
.submit-payment-field.select-default select {
    background-color: var(--accent-dark);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23ffffff' d='M1.41.59 6 5.17 10.59.59 12 2l-6 6-6-6z'/%3E%3C/svg%3E");
}
.submit-inline-note {
    margin-top: 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    line-height: 1.5;
}
.compact-stack.is-submitting .sku-chip-list,
.compact-stack.is-submitting .quantity-stepper,
.compact-stack.is-submitting .submit-payment-field {
    pointer-events: none;
    opacity: .72;
}
.compact-stack.is-submitting [data-product-submit] {
    opacity: 1;
}
.submit-panel .flash {
    padding: 9px 11px;
}
.product-stock-alert {
    margin-top: 12px;
}