/* ==========================================================================
   LVMRE Commerce — Cart, Checkout, Account Styles
   Extends main.css + pages.css. Uses existing design tokens.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Header — Cart Badge & Account Link
   -------------------------------------------------------------------------- */
.header__nav-link--cart {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.cart-badge {
    position: absolute;
    top: -6px;
    right: -10px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: 11px;
    font-weight: 700;
    line-height: 18px;
    text-align: center;
    font-family: var(--font-primary);
    pointer-events: none;
}

[data-theme="dark"] .cart-badge {
    background: var(--color-text-inverse);
    color: var(--color-primary);
}

.header__nav-link--account {
    font-weight: var(--font-weight-medium);
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */
.commerce-toast {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md, 8px);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-inverse);
    background: var(--color-primary);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    max-width: 360px;
}

.commerce-toast--visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.commerce-toast--error {
    background: var(--grey-slate);
}

/* --------------------------------------------------------------------------
   Add-to-Cart Button on Product Cards
   -------------------------------------------------------------------------- */
.refurb-card__add-cart {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    margin-top: auto;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: 0 0 var(--radius-md, 8px) var(--radius-md, 8px);
    cursor: pointer;
    transition: background 0.2s ease, opacity 0.2s ease;
}

.refurb-card__add-cart:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.refurb-card__add-cart svg {
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Cart Hero
   -------------------------------------------------------------------------- */
.cart-hero {
    padding: var(--space-xl) 0 var(--space-md);
}

.cart-hero .page-header__title {
    font-size: var(--font-size-2xl);
    margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Cart Section
   -------------------------------------------------------------------------- */
.cart-section {
    padding-bottom: var(--space-2xl);
}

.cart-loading {
    text-align: center;
    padding: var(--space-2xl) 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

.cart-empty {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.cart-empty svg {
    color: var(--grey-cloud);
    margin-bottom: var(--space-md);
}

.cart-empty h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
}

.cart-empty p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

/* --------------------------------------------------------------------------
   Cart Grid Layout
   -------------------------------------------------------------------------- */
.cart-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .cart-grid {
        grid-template-columns: 1fr 340px;
    }
}

/* --------------------------------------------------------------------------
   Cart Item
   -------------------------------------------------------------------------- */
.cart-item {
    display: grid;
    grid-template-columns: 120px 1fr auto;
    gap: var(--space-md);
    align-items: start;
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md, 8px);
    transition: border-color 0.2s ease;
}

.cart-item:hover {
    border-color: var(--color-border);
}

.cart-item + .cart-item {
    margin-top: var(--space-sm);
}

.cart-item__image {
    width: 120px;
    height: 90px;
    border-radius: var(--radius-sm, 4px);
    overflow: hidden;
    background: var(--color-background-alt);
}

.cart-item__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item__details {
    min-width: 0;
}

.cart-item__name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
    margin-bottom: 4px;
}

.cart-item__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 6px;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.cart-item__price {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.cart-item__controls {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-xs);
}

.cart-item__qty {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm, 4px);
    overflow: hidden;
}

.cart-item__qty-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--color-background-alt);
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.15s ease;
}

.cart-item__qty-btn:hover {
    background: var(--color-border);
}

.cart-item__qty-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.cart-item__qty-value {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 32px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    background: var(--color-surface);
}

.cart-item__line-total {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
}

.cart-item__remove {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border: none;
    background: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    cursor: pointer;
    border-radius: var(--radius-sm, 4px);
    transition: color 0.15s ease, background 0.15s ease;
}

.cart-item__remove:hover {
    color: var(--color-text);
    background: var(--color-background-alt);
}

/* Mobile: stack cart item */
@media (max-width: 640px) {
    .cart-item {
        grid-template-columns: 80px 1fr;
        gap: var(--space-sm);
    }

    .cart-item__image {
        width: 80px;
        height: 60px;
    }

    .cart-item__controls {
        grid-column: 1 / -1;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

/* --------------------------------------------------------------------------
   Cart Summary Sidebar
   -------------------------------------------------------------------------- */
.cart-summary {
    position: sticky;
    top: calc(var(--header-height, 80px) + var(--space-md));
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md, 8px);
    align-self: start;
}

.cart-summary__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border-light);
}

.cart-summary__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) 0;
    font-size: var(--font-size-sm);
}

.cart-summary__row--muted {
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
}

.cart-summary__divider {
    height: 1px;
    background: var(--color-border-light);
    margin: var(--space-sm) 0;
}

.cart-summary__row--total {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.cart-summary__checkout {
    display: block;
    width: 100%;
    text-align: center;
    margin-top: var(--space-md);
}

.cart-summary__continue {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: var(--space-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.15s ease;
}

.cart-summary__continue:hover {
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Account Page
   -------------------------------------------------------------------------- */
.account-section {
    padding: var(--space-xl) 0 var(--space-2xl);
}

.account-card {
    max-width: 480px;
    margin: 0 auto;
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md, 8px);
}

.account-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
    text-align: center;
}

.account-card__tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--space-md);
}

.account-card__tab {
    flex: 1;
    padding: var(--space-sm);
    border: none;
    background: none;
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.account-card__tab--active {
    color: var(--color-text);
    border-bottom-color: var(--color-primary);
}

.account-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.account-form__group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.account-form__label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.account-form__input {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm, 4px);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    background: var(--color-background);
    color: var(--color-text);
    transition: border-color 0.15s ease;
}

.account-form__input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.account-form__submit {
    margin-top: var(--space-xs);
}

.account-form__status {
    text-align: center;
    font-size: var(--font-size-xs);
    min-height: 1.5em;
}

.account-form__status--error {
    color: var(--grey-warm);
}

.account-form__status--success {
    color: var(--grey-steel);
}

.account-form__footer {
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
}

.account-form__footer a {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
}

.account-form__checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.account-loading {
    text-align: center;
    padding: var(--space-2xl) 0;
    color: var(--color-text-secondary);
}

.account-dashboard__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.account-dashboard__btn {
    text-align: center;
}

.account-dashboard__logout {
    margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Checkout Page
   -------------------------------------------------------------------------- */
.checkout-section {
    padding-bottom: var(--space-2xl);
}

.checkout-auth-gate {
    text-align: center;
    padding: var(--space-2xl) 0;
    font-size: var(--font-size-base);
}

.checkout-auth-gate a {
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
}

.checkout-steps {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.checkout-step {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.checkout-step--active {
    color: var(--color-text);
}

.checkout-step--done {
    color: var(--grey-steel);
}

.checkout-step__number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    background: var(--color-background-alt);
}

.checkout-step--active .checkout-step__number {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.checkout-step--done .checkout-step__number {
    background: var(--grey-steel);
    color: var(--color-text-inverse);
}

.checkout-step__separator {
    width: 24px;
    height: 1px;
    background: var(--color-border);
}

/* --------------------------------------------------------------------------
   Checkout Panels
   -------------------------------------------------------------------------- */
.checkout-panel {
    max-width: 720px;
}

.checkout-panel__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
}

.checkout-panel__subtitle {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-sm);
}

.checkout-loading {
    color: var(--color-text-secondary);
    padding: var(--space-md) 0;
}

.checkout-nav {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.checkout-status {
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    min-height: 1.5em;
}

.checkout-status--error {
    color: var(--grey-warm);
}

.checkout-status--success {
    color: var(--grey-steel);
}

/* --------------------------------------------------------------------------
   Address Cards
   -------------------------------------------------------------------------- */
.checkout-addresses {
    display: grid;
    gap: var(--space-sm);
}

.checkout-address-card {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md, 8px);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.checkout-address-card:hover {
    border-color: var(--color-border);
}

.checkout-address-card--selected {
    border-color: var(--color-primary);
}

.checkout-address-card input[type="radio"] {
    margin-top: 2px;
    flex-shrink: 0;
}

.checkout-address-card__body {
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.checkout-address-card__body strong {
    display: block;
    margin-bottom: 4px;
}

.checkout-address-card__body p {
    margin: 0;
    color: var(--color-text-secondary);
}

.checkout-add-address-btn {
    justify-self: start;
    margin-top: var(--space-xs);
}

.checkout-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

@media (max-width: 480px) {
    .checkout-form-row {
        grid-template-columns: 1fr;
    }
}

/* --------------------------------------------------------------------------
   Shipping Options
   -------------------------------------------------------------------------- */
.checkout-shipping-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md, 8px);
    cursor: pointer;
    transition: border-color 0.2s ease;
    margin-bottom: var(--space-xs);
}

.checkout-shipping-option:hover {
    border-color: var(--color-border);
}

.checkout-shipping-option input[type="radio"]:checked + .checkout-shipping-option__body {
    font-weight: var(--font-weight-semibold);
}

.checkout-shipping-option__body {
    flex: 1;
    font-size: var(--font-size-sm);
}

.checkout-shipping-option__body strong {
    display: block;
}

.checkout-shipping-option__days {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.checkout-shipping-option__price {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
}

.checkout-shipping-continue {
    margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Review Step
   -------------------------------------------------------------------------- */
.checkout-review-grid {
    display: grid;
    gap: var(--space-lg);
}

.checkout-review-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) 0;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-border-light);
}

.checkout-review-item__name {
    flex: 1;
    min-width: 0;
}

.checkout-review-item__qty {
    color: var(--color-text-secondary);
    margin: 0 var(--space-md);
}

.checkout-review-item__price {
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
}

.checkout-review-summary {
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md, 8px);
    font-size: var(--font-size-sm);
}

.checkout-review-summary p {
    margin-bottom: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Confirmation Step
   -------------------------------------------------------------------------- */
.checkout-confirmation {
    text-align: center;
    padding: var(--space-lg) 0;
}

.checkout-confirmation svg {
    color: var(--grey-steel);
    margin-bottom: var(--space-md);
}

.checkout-confirmation h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
}

.checkout-confirmation__order-number {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-mono);
    margin-bottom: var(--space-lg);
}

.checkout-confirmation__payment {
    text-align: left;
    max-width: 480px;
    margin: 0 auto;
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md, 8px);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.checkout-confirmation__payment h3 {
    margin: 0 0 var(--space-sm);
    font-size: var(--font-size-base);
}

.checkout-confirmation__payment p {
    margin: 4px 0;
}

.checkout-confirmation__ref {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    font-family: var(--font-mono);
    background: var(--color-background-alt);
    padding: var(--space-xs) var(--space-sm);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-sm, 4px);
    display: inline-block;
    margin: var(--space-xs) 0;
}

.checkout-confirmation__actions {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
}

/* --------------------------------------------------------------------------
   Dark Mode Overrides
   -------------------------------------------------------------------------- */
[data-theme="dark"] .cart-item,
[data-theme="dark"] .cart-summary,
[data-theme="dark"] .account-card,
[data-theme="dark"] .checkout-address-card,
[data-theme="dark"] .checkout-shipping-option,
[data-theme="dark"] .checkout-review-summary,
[data-theme="dark"] .checkout-confirmation__payment {
    background: var(--color-surface-dark);
    border-color: var(--color-border);
}

[data-theme="dark"] .cart-item__qty-btn {
    background: var(--color-secondary);
}

[data-theme="dark"] .cart-item__qty-btn:hover {
    background: var(--color-primary-light);
}

[data-theme="dark"] .cart-item__qty-value {
    background: var(--color-surface-dark);
}

[data-theme="dark"] .account-form__input {
    background: var(--color-secondary);
    border-color: var(--color-border);
    color: var(--color-text-inverse);
}

[data-theme="dark"] .commerce-toast {
    background: var(--color-surface-dark);
    color: var(--color-text-inverse);
    border: 1px solid var(--color-border);
}