/* ==========================================================================
   Checkout — stadium + card surfaces (hero / atelier-item language)
   ========================================================================== */

.checkout-mosaic-wrapper {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100dvh;
    background: transparent;
    z-index: 2000;
    display: grid;
    grid-template-columns: minmax(200px, 1.5fr) minmax(300px, 4fr) minmax(260px, 2.8fr);
    gap: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.55s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.55s;
}

.checkout-mosaic-wrapper.is-active {
    opacity: 1;
    visibility: visible;
}

.checkout-mosaic-wrapper > .sf-overlay-stadium {
    z-index: 0;
}

.checkout-panel-nav,
.checkout-panel-interaction,
.checkout-panel-summary {
    position: relative;
    z-index: 1;
    min-height: 0;
}

.checkout-panel-nav {
    margin: 24px 0 24px 24px;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background:
        linear-gradient(165deg, rgba(255, 77, 0, 0.05) 0%, transparent 40%),
        linear-gradient(180deg, rgba(12, 20, 34, 0.92) 0%, rgba(4, 8, 14, 0.94) 100%);
    border: 1px solid rgba(34, 232, 144, 0.18);
    border-left: 3px solid var(--sf-primary, #ff4d00);
    border-radius: var(--radius-overlay, 12px);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.3),
        0 16px 40px rgba(0, 0, 0, 0.4);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

body.is-low-power .checkout-panel-nav {
    background: rgba(12, 20, 34, 0.96);
}

.checkout-brand-lockup {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkout-brand-title {
    font-family: "Sora", sans-serif;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sf-chrome, #eef4ff);
}

.checkout-brand-num {
    color: var(--sf-primary, #ff4d00);
}

.checkout-stepper {
    display: flex;
    flex-direction: column;
    gap: 28px;
    margin: 40px 0;
}

.step-indicator {
    display: flex;
    flex-direction: column;
    opacity: 0.4;
    transition: opacity 0.35s ease, transform 0.35s ease, border-color 0.35s ease;
    border-left: 2px solid transparent;
    padding-left: 14px;
}

.step-indicator.is-current {
    opacity: 1;
    border-left-color: var(--sf-primary, #ff4d00);
    transform: translateX(3px);
}

.step-indicator.is-completed {
    opacity: 0.75;
    border-left-color: var(--sf-secondary, #22e890);
}

.step-num {
    font-family: "Sora", sans-serif;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.14em;
    margin-bottom: 4px;
    color: var(--sf-secondary, #22e890);
    text-transform: uppercase;
}

.step-label {
    font-family: "Sora", sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--sf-chrome, #eef4ff);
}

.btn-return-link {
    background: none;
    border: none;
    text-align: left;
    font-family: "Sora", sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--sf-muted, #9aa8bc);
    cursor: pointer;
    padding: 0;
    transition: color 0.25s;
}

.btn-return-link:hover {
    color: var(--sf-primary-bright, #ffb000);
}

.checkout-panel-interaction {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
    margin: 24px 16px;
    padding: 0;
    background:
        linear-gradient(165deg, rgba(255, 77, 0, 0.04) 0%, transparent 38%),
        linear-gradient(180deg, rgba(12, 20, 34, 0.9) 0%, rgba(4, 8, 14, 0.92) 100%);
    border: 1px solid rgba(34, 232, 144, 0.16);
    border-radius: var(--radius-overlay, 12px);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.3),
        0 16px 40px rgba(0, 0, 0, 0.4);
}

.checkout-interaction-scroll {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 40px clamp(20px, 4vw, 48px) 32px;
}

.checkout-dynamic-form,
.checkout-success-content {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
}

.form-step-content {
    display: none;
    opacity: 0;
    transform: translateY(12px);
}

.form-step-content.is-active {
    display: block;
    animation: checkoutStepIn 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes checkoutStepIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-header {
    margin-bottom: 28px;
}

.step-header-centered {
    text-align: center;
}

.step-title {
    font-family: var(--font-display, "Bebas Neue", sans-serif);
    font-size: clamp(1.65rem, 2.8vw, 2.15rem);
    font-weight: 400;
    letter-spacing: 0.04em;
    color: var(--sf-chrome, #eef4ff);
    margin: 0 0 8px 0;
    text-transform: uppercase;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
}

.step-subtitle {
    font-family: "Sora", sans-serif;
    font-size: 13px;
    color: var(--sf-muted, #9aa8bc);
    margin: 0;
    line-height: 1.55;
}

.input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 28px;
}

.input-group.full { grid-column: span 2; }
.input-group.half { grid-column: span 1; }

.input-group label {
    display: block;
    font-family: "Sora", sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(168, 240, 200, 0.85);
    margin-bottom: 8px;
}

.input-group input,
.input-group select {
    width: 100%;
    background: rgba(8, 14, 24, 0.55);
    border: 1px solid rgba(34, 232, 144, 0.18);
    border-radius: var(--radius-button, 6px);
    padding: 12px 14px;
    font-family: "Sora", sans-serif;
    font-size: 14px;
    color: var(--sf-chrome, #eef4ff);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    box-sizing: border-box;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: rgba(255, 77, 0, 0.55);
    box-shadow: 0 0 0 3px rgba(255, 77, 0, 0.12);
}

.input-group select option {
    background: #0f1828;
    color: #eef4ff;
}

.vault-container {
    margin-bottom: 20px;
    padding: 16px;
    border-radius: var(--radius-card, 8px);
    border: 1px solid rgba(34, 232, 144, 0.16);
    background: rgba(8, 14, 24, 0.5);
}

.stripe-mount-point {
    min-height: 120px;
}

.stripe-error-message {
    margin-top: 12px;
    font-size: 13px;
    color: #ff7a7a;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-top: 20px;
    border-top: 1px solid rgba(34, 232, 144, 0.14);
}

.btn-ghost {
    background: transparent;
    border: none;
    font-family: "Sora", sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sf-muted, #9aa8bc);
    cursor: pointer;
    padding: 12px 0;
    transition: color 0.25s;
}

.btn-ghost:hover {
    color: var(--sf-chrome, #eef4ff);
}

.checkout-primary-btn.product-quick-add-btn {
    width: auto;
    max-width: none;
    min-width: 150px;
    padding: 13px 24px;
    font-family: "Sora", sans-serif;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border: none;
    border-radius: var(--radius-button, 6px);
    cursor: pointer;
}

.checkout-panel-summary {
    margin: 24px 24px 24px 0;
    padding: 0;
    display: flex;
    align-items: stretch;
    min-height: 0;
    overflow: hidden;
    background: transparent;
    border: none;
}

.summary-glass-card {
    width: 100%;
    background:
        linear-gradient(165deg, rgba(255, 77, 0, 0.05) 0%, transparent 40%),
        linear-gradient(180deg, rgba(12, 20, 34, 0.94) 0%, rgba(4, 8, 14, 0.96) 100%);
    border: 1px solid rgba(34, 232, 144, 0.18);
    border-left: 3px solid var(--sf-primary, #ff4d00);
    border-radius: var(--radius-overlay, 12px);
    padding: 26px 22px;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.3),
        0 16px 40px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(255, 77, 0, 0.08);
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-height: calc(100dvh - 48px);
    overflow-y: auto;
}

body.is-low-power .summary-glass-card {
    background: rgba(12, 20, 34, 0.97);
}

.summary-title {
    font-family: "Sora", sans-serif;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sf-chrome, #eef4ff);
    margin: 0 0 20px 0;
    text-align: left;
}

.summary-items-list {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    -webkit-overflow-scrolling: touch;
}

.summary-items-list::-webkit-scrollbar { width: 4px; }
.summary-items-list::-webkit-scrollbar-thumb {
    background: rgba(34, 232, 144, 0.3);
    border-radius: 2px;
}

.summary-item-row {
    display: grid;
    grid-template-columns: 52px 1fr auto;
    gap: 10px;
    align-items: center;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.summary-item-thumb {
    width: 52px;
    height: 52px;
    border-radius: 6px;
    object-fit: cover;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(34, 232, 144, 0.16);
}

.summary-item-body {
    min-width: 0;
}

.summary-item-title {
    display: block;
    font-family: "Sora", sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--sf-chrome, #eef4ff);
    margin-bottom: 4px;
}

.summary-item-meta {
    display: block;
    font-size: 11px;
    letter-spacing: 0.02em;
    opacity: 0.7;
    line-height: 1.4;
    color: var(--sf-muted, #9aa8bc);
}

.summary-item-price {
    font-family: var(--font-display, "Bebas Neue", sans-serif);
    font-size: 1rem;
    font-weight: 400;
    color: var(--sf-primary-bright, #ffb000);
    white-space: nowrap;
}

.checkout-coupon-block {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(34, 232, 144, 0.12);
}

.checkout-coupon-block.is-hidden {
    display: none;
}

.checkout-coupon-label {
    display: block;
    font-family: "Sora", sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 10px;
    color: rgba(168, 240, 200, 0.85);
}

.checkout-coupon-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
}

.checkout-coupon-input {
    height: 42px;
    border: 1px solid rgba(34, 232, 144, 0.18);
    border-radius: var(--radius-button, 6px);
    padding: 0 12px;
    font-family: "Sora", sans-serif;
    font-size: 13px;
    background: rgba(8, 14, 24, 0.55);
    color: var(--sf-chrome, #eef4ff);
}

.checkout-coupon-input:focus {
    outline: none;
    border-color: rgba(255, 77, 0, 0.55);
}

.checkout-coupon-apply {
    height: 42px;
    padding: 0 14px;
    border: none;
    border-radius: var(--radius-button, 6px);
    background: linear-gradient(135deg, var(--sf-secondary-deep, #009650) 0%, var(--sf-secondary, #22e890) 100%);
    color: #041018;
    font-family: "Sora", sans-serif;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    transition: opacity 0.25s;
}

.checkout-coupon-apply:hover {
    opacity: 0.9;
}

.checkout-coupon-message {
    margin: 8px 0 0;
    font-size: 12px;
    line-height: 1.4;
    min-height: 16px;
    color: var(--sf-muted, #9aa8bc);
}

.checkout-coupon-message.is-error {
    color: #ff7a7a;
}

.checkout-coupon-message.is-success {
    color: #5ddea0;
}

.summary-totals {
    border-top: 1px solid rgba(34, 232, 144, 0.12);
    padding-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
}

.totals-row {
    display: flex;
    justify-content: space-between;
    font-family: "Sora", sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--sf-muted, #9aa8bc);
}

.total-highlight {
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--sf-chrome, #eef4ff);
    margin-top: 6px;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 77, 0, 0.25);
}

.total-highlight span:last-child {
    font-family: var(--font-display, "Bebas Neue", sans-serif);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--sf-primary-bright, #ffb000);
}

#checkout-wholesale-row[hidden],
#checkout-coupon-row[hidden] {
    display: none !important;
}

.checkout-success-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: checkoutStepIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.checkout-success-content[hidden] {
    display: none !important;
}

.success-icon-wrapper {
    width: 72px;
    height: 72px;
    margin-bottom: 20px;
}

.checkmark {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: block;
    stroke-width: 2;
    stroke: var(--sf-primary-bright, #ffb000);
    stroke-miterlimit: 10;
}

.checkmark__circle {
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    stroke-width: 2;
    stroke-miterlimit: 10;
    stroke: var(--sf-primary-bright, #ffb000);
    fill: none;
    animation: checkoutStroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark__check {
    transform-origin: 50% 50%;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: checkoutStroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.7s forwards;
}

@keyframes checkoutStroke {
    to { stroke-dashoffset: 0; }
}

.order-details-box {
    background: rgba(8, 14, 24, 0.55);
    border-radius: var(--radius-card, 8px);
    padding: 22px;
    width: 100%;
    text-align: center;
    margin: 24px 0;
    border: 1px solid rgba(34, 232, 144, 0.16);
    box-sizing: border-box;
}

.order-label {
    display: block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sf-muted, #9aa8bc);
    margin-bottom: 8px;
}

.order-number {
    font-family: var(--font-display, "Bebas Neue", sans-serif);
    font-size: 1.3rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: var(--sf-primary-bright, #ffb000);
}

.success-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.success-actions .checkout-primary-btn {
    width: 100%;
}

.guest-account-cta p {
    color: var(--sf-muted, #9aa8bc);
    font-size: 13px;
    line-height: 1.5;
    margin: 0 0 12px;
}

.guest-account-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.summary-empty {
    font-size: 13px;
    opacity: 0.65;
    text-align: center;
    margin: 0;
    color: var(--sf-muted, #9aa8bc);
}

#atelier-checkout-view .form-actions {
    position: relative;
    z-index: 2;
    background: transparent;
}

#atelier-checkout-view .checkout-dynamic-form {
    position: relative;
    z-index: 1;
}

#atelier-checkout-view .atelier-btn-premium {
    background: linear-gradient(135deg, var(--sf-primary) 0%, var(--sf-primary-mid) 45%, var(--sf-primary-deep) 100%);
    color: #fff;
}

#atelier-checkout-view .atelier-btn-premium:disabled {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(238, 244, 255, 0.35);
}

@media (max-width: 1024px) {
    .checkout-mosaic-wrapper {
        grid-template-columns: 1fr;
        grid-template-rows: auto minmax(0, 1fr) auto;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 12px;
        box-sizing: border-box;
    }

    .checkout-panel-nav {
        margin: 0 0 12px;
        flex-direction: row;
        align-items: center;
        gap: 16px;
        padding: 16px 18px;
        overflow: visible;
    }

    .checkout-stepper {
        display: none;
    }

    .btn-return-link {
        margin-left: auto;
    }

    .checkout-panel-interaction {
        margin: 0 0 12px;
        overflow: visible;
    }

    .checkout-interaction-scroll {
        overflow: visible;
        padding: 24px 18px;
    }

    .checkout-panel-summary {
        margin: 0;
        overflow: visible;
    }

    .summary-glass-card {
        max-height: none;
    }

    .input-grid {
        grid-template-columns: 1fr;
    }

    .input-group.full,
    .input-group.half {
        grid-column: span 1;
    }
}