/* ============================================================================
   checkout.css — self-contained, kernel-owned checkout styling (Phase 1.4c, B1)
   ----------------------------------------------------------------------------
   The commerce-kernel checkout (/Checkout) must render identically under ANY brand
   layout (_Layout / _LayoutDestinito / _LayoutIIG), but the SBF design tokens
   (--color-*, --radius-*, --shadow-*) + the .form-input/.btn primitives live ONLY
   in theme.css, which the brand layouts do not load. So this file is SELF-CONTAINED:

     • It defines its OWN copy of the tokens (the real theme.css values) scoped to
       .checkout-page, so they inherit to every descendant and zero var(--…) is left
       undefined under any layout.
     • Every rule is scoped under .checkout-page so nothing leaks to the surrounding
       brand chrome (header/footer), and the .form-input/.btn primitives win inside the
       checkout via higher specificity without colliding with theme.css under SBF.

   theme.css is intentionally LEFT UNTOUCHED (its checkout rules stay as the SBF copy;
   a later cleanup can de-dup). Duplication here is deliberate and lower-risk.
   ============================================================================ */

.checkout-page {
    /* Scoped design tokens — real theme.css values, kernel-owned + brand-neutral. */
    --color-primary: #0066CC;
    --color-primary-dark: #0052A3;
    --color-success: #059669;
    --color-error: #EF4444;
    --color-gray-50: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #E8E8E8;
    --color-gray-300: #E0E0E0;
    --color-gray-500: #9E9E9E;
    --color-gray-600: #757575;
    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --transition-fast: 150ms ease-in-out;

    background: var(--color-gray-50);
    min-height: calc(100vh - 200px);
    padding: 40px 20px;
}

.checkout-page .checkout-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Checkout Steps */
.checkout-page .checkout-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 40px;
    padding: 0 20px;
}

.checkout-page .step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.checkout-page .step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-gray-200);
    color: var(--color-gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.checkout-page .step.active .step-number {
    background: var(--color-primary);
    color: white;
}

.checkout-page .step.completed .step-number {
    background: var(--color-success);
    color: white;
}

.checkout-page .step-label {
    font-size: 12px;
    color: var(--color-gray-500);
    font-weight: 500;
}

.checkout-page .step.active .step-label {
    color: var(--color-primary);
}

.checkout-page .step.completed .step-label {
    color: var(--color-success);
}

.checkout-page .step-line {
    width: 60px;
    height: 2px;
    background: var(--color-gray-200);
    margin: 0 8px;
    margin-bottom: 24px;
}

/* Checkout Content Layout */
.checkout-page .checkout-content {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 32px;
    align-items: start;
}

.checkout-page .checkout-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Checkout Section */
.checkout-page .checkout-section {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 24px;
}

.checkout-page .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-gray-200);
}

.checkout-page .section-header h2 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.checkout-page .edit-link {
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 500;
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.checkout-page .edit-link:hover {
    text-decoration: underline;
}

/* Order Items */
.checkout-page .order-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.checkout-page .order-item {
    display: flex;
    gap: 16px;
    align-items: center;
}

.checkout-page .order-item .item-image {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--color-gray-100);
}

.checkout-page .order-item .item-details {
    flex: 1;
    min-width: 0;
}

.checkout-page .order-item .item-brand {
    font-size: 11px;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.checkout-page .order-item .item-name {
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 2px;
}

.checkout-page .order-item .item-qty {
    font-size: 13px;
    color: var(--color-gray-600);
}

.checkout-page .order-item .item-price {
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
}

.checkout-page .empty-order {
    text-align: center;
    padding: 32px;
    color: var(--color-gray-500);
}

.checkout-page .empty-order a {
    color: var(--color-primary);
}

/* Collection Details */
.checkout-page .collection-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 24px;
}

.checkout-page .detail-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.checkout-page .detail-row .label {
    font-size: 12px;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.checkout-page .detail-row .value {
    font-weight: 500;
    font-size: 14px;
}

/* Checkout Form */
.checkout-page .checkout-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.checkout-page .checkout-form .form-group {
    margin-bottom: 20px;
}

.checkout-page .checkout-form .form-group:last-child {
    margin-bottom: 0;
}

.checkout-page .checkout-form label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 14px;
}

.checkout-page .checkout-form label .required {
    color: var(--color-error);
}

.checkout-page .checkout-form .checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
}

.checkout-page .checkout-form .checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

/* Payment Methods */
.checkout-page .payment-methods {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.checkout-page .payment-option {
    display: block;
    cursor: pointer;
}

.checkout-page .payment-option input[type="radio"] {
    display: none;
}

.checkout-page .payment-option-content {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.checkout-page .payment-option input[type="radio"]:checked + .payment-option-content {
    border-color: var(--color-primary);
    background: #F8FAFF;
}

.checkout-page .payment-icon {
    width: 48px;
    height: 48px;
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.checkout-page .payment-info {
    flex: 1;
}

.checkout-page .payment-name {
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 4px;
}

.checkout-page .payment-desc {
    font-size: 13px;
    color: var(--color-gray-500);
}

.checkout-page .payment-cards {
    display: flex;
    gap: 8px;
    align-items: center;
}

.checkout-page .payment-cards img {
    height: 20px;
    width: auto;
}

/* Card brand marks via Font Awesome (fa-cc-*) — no image assets needed. */
.checkout-page .payment-cards i {
    font-size: 1.75rem;
    color: var(--color-gray-600);
}

/* The completed (Cart) step is an anchor to /Cart — strip link styling, show a pointer. */
.checkout-page .checkout-steps a.step {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

/* Card Details */
.checkout-page .card-details {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-top: -8px;
}

/* Checkout Sidebar */
.checkout-page .checkout-sidebar {
    position: sticky;
    top: 20px;
}

.checkout-page .order-summary {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 24px;
}

.checkout-page .order-summary h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-gray-200);
}

.checkout-page .summary-items {
    margin-bottom: 20px;
    max-height: 200px;
    overflow-y: auto;
}

.checkout-page .summary-item {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 0;
    font-size: 13px;
}

.checkout-page .summary-item span:first-child {
    color: var(--color-gray-600);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.checkout-page .summary-item span:last-child {
    font-weight: 500;
    white-space: nowrap;
}

/* Promo Code in Sidebar */
.checkout-page .promo-code {
    border-top: 1px solid var(--color-gray-200);
    padding-top: 16px;
    margin-bottom: 16px;
}

.checkout-page .promo-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: var(--color-primary);
    font-weight: 500;
}

.checkout-page .promo-toggle:hover {
    text-decoration: underline;
}

.checkout-page .promo-input {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.checkout-page .promo-input .form-input {
    flex: 1;
}

.checkout-page .promo-input .btn {
    padding: 10px 16px;
}

/* Summary Totals */
.checkout-page .summary-totals {
    border-top: 1px solid var(--color-gray-200);
    padding-top: 16px;
    margin-bottom: 20px;
}

.checkout-page .summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
}

.checkout-page .summary-row.discount {
    color: var(--color-success);
}

.checkout-page .summary-row.total {
    font-size: 18px;
    font-weight: 700;
    padding-top: 12px;
    border-top: 1px solid var(--color-gray-200);
    margin-top: 8px;
}

/* Secure Checkout */
.checkout-page .secure-checkout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    font-size: 13px;
    color: var(--color-gray-500);
}

.checkout-page .secure-checkout svg {
    color: var(--color-success);
}

/* Multi-merchant payment list (Q5 fan-out) */
.checkout-page .multi-merchant-payments {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

/* ── Primitives — scoped under .checkout-page so they don't collide with theme.css
   under SBF (where both files load) and don't leak to other pages. Real theme.css bodies. ── */

.checkout-page .form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: #fff;
}

.checkout-page .form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.checkout-page .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.checkout-page .btn-primary {
    background: var(--color-primary);
    color: white;
}

.checkout-page .btn-primary:hover {
    background: var(--color-primary-dark);
    color: white;
}

.checkout-page .btn-secondary {
    background: white;
    border: 1px solid #DDD;
    color: #444;
}

.checkout-page .btn-secondary:hover {
    background: var(--color-gray-100);
}

.checkout-page .btn-block {
    width: 100%;
}

.checkout-page .btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

/* Checkout Responsive */
@media (max-width: 1024px) {
    .checkout-page .checkout-content {
        grid-template-columns: 1fr;
    }

    .checkout-page .checkout-sidebar {
        position: static;
        order: -1;
    }
}

@media (max-width: 768px) {
    .checkout-page {
        padding: 20px 16px;
    }

    .checkout-page .checkout-steps {
        flex-wrap: wrap;
        gap: 8px;
    }

    .checkout-page .step-line {
        width: 30px;
    }

    .checkout-page .checkout-section {
        padding: 20px;
    }

    .checkout-page .checkout-form .form-row {
        grid-template-columns: 1fr;
    }

    .checkout-page .collection-details {
        grid-template-columns: 1fr;
    }
}