#product-detail {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(2, 6, 23, 0.62);
        backdrop-filter: blur(8px) saturate(115%);
        z-index: 32000;
        align-items: center;
        justify-content: center;
        padding: 18px;
        animation: fadeIn .24s ease;
    }

    /* پاپ‌آپ باید مستقیم زیر body باشد تا overflow لایهٔ فید آن را نبرد */
    body > #product-detail {
        position: fixed;
        z-index: 32000;
    }

    body.rewall-product-popup-open {
        overflow: hidden;
    }

    body.rewall-product-popup-open:has(#feedDashboardLayout) .app,
    body.rewall-product-popup-open:has(#feedDashboardLayout) .feed-page-main-scroll,
    body.rewall-product-popup-open:has(#feedDashboardLayout) .home-feed {
        overflow: hidden !important;
    }

    #product-detail .popup-box {
        background: #fff;
        border-radius: 30px;
        width: min(96vw, 760px);
        max-height: min(90vh, 920px);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        box-shadow: 0 26px 70px rgba(2, 6, 23, 0.42);
        border: 1px solid rgba(226, 232, 240, 0.9);
        padding: 0;
        animation: slideUpIn .34s cubic-bezier(0.22, 1, 0.36, 1);
        touch-action: pan-y;
        will-change: transform;
    }

    .product-popup-scroll {
        flex: 1 1 auto;
        min-height: 0;
        overflow-y: auto;
        overflow-x: hidden;
        padding: 0 22px 12px;
        -webkit-overflow-scrolling: touch;
    }

    .product-popup-footer {
        flex: 0 0 auto;
        padding: 12px 22px calc(14px + env(safe-area-inset-bottom, 0px));
        border-top: 1px solid #e2e8f0;
        background: #fff;
        box-shadow: 0 -8px 24px rgba(15, 23, 42, 0.06);
    }
    #product-detail.dragging .popup-box {
        transition: none !important;
        animation: none !important;
    }

    .product-popup-header {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 12px;
        flex: 0 0 auto;
        margin: 0;
        padding: 16px 22px 12px;
        position: sticky;
        top: 0;
        z-index: 4;
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.96));
        backdrop-filter: blur(6px);
        border-bottom: 1px solid #eef2f7;
    }

    .product-popup-title {
        flex: 1;
        min-width: 0;
        margin: 0;
        color: #0b1220 !important;
        font-size: clamp(18px, 2.2vw, 26px);
        line-height: 1.55;
        font-weight: 900;
        letter-spacing: -0.01em;
        text-wrap: balance;
        text-shadow: 0 1px 0 rgba(255, 255, 255, 0.6);
    }
    .product-popup-header-main {
        flex: 1;
        min-width: 0;
    }
    .product-popup-shop-row {
        margin-top: 8px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 8px;
        flex-wrap: wrap;
    }
    .product-popup-shop-meta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        min-width: 0;
    }
    .product-popup-shop-logo-wrap {
        width: 28px;
        height: 28px;
        border-radius: 50%;
        border: 1px solid #dbe2ea;
        overflow: hidden;
        background: #fff;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }
    .product-popup-shop-logo {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }
    .product-popup-shop-title {
        color: #475569;
        font-size: 12px;
        font-weight: 800;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: min(52vw, 280px);
    }
    .product-popup-shop-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 30px;
        padding: 5px 10px;
        border-radius: 999px;
        border: 1px solid #c7d2fe;
        background: #eef2ff;
        color: #3730a3;
        text-decoration: none;
        font-size: 11px;
        font-weight: 800;
    }

    .product-popup-close-btn {
        flex-shrink: 0;
        width: 38px;
        height: 38px;
        border: 1px solid #dbe2ea;
        border-radius: 12px;
        background: #f8fafc;
        color: #334155;
        font-size: 18px;
        line-height: 1;
        cursor: pointer;
        transition: all .16s ease;
    }
    .product-popup-close-btn:hover {
        background: #eef2f7;
        border-color: #cfd8e3;
        color: #0f172a;
    }

    .product-popup-gallery-wrap {
        margin: 14px 0 16px;
        padding: 0;
        background: transparent;
        border: 0;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .product-popup-gallery-stage {
        position: relative;
        width: 100%;
        aspect-ratio: 1 / 1;
        max-height: 520px;
        border-radius: 20px;
        overflow: hidden;
        background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
        border: 1px solid #e2e8f0;
        cursor: zoom-in;
        outline: none;
        touch-action: pan-y;
        user-select: none;
        -webkit-user-select: none;
    }
    .product-popup-gallery-stage:focus-visible {
        box-shadow: 0 0 0 3px rgba(79, 70, 229, .35);
    }
    .product-popup-gallery-stage-skel {
        position: absolute;
        inset: 0;
        background: linear-gradient(110deg, #e9edf4 8%, #f8fafc 18%, #e9edf4 33%);
        background-size: 220% 100%;
        animation: popup-gallery-shimmer 1.1s linear infinite;
        opacity: 1;
        transition: opacity .25s ease;
        pointer-events: none;
        z-index: 0;
    }
    .product-popup-gallery-stage.is-ready .product-popup-gallery-stage-skel {
        opacity: 0;
    }
    .product-popup-gallery-stage.is-error {
        background: #f1f5f9;
    }
    .product-popup-gallery-stage.is-error .product-popup-gallery-hero {
        opacity: 0;
    }
    .product-popup-gallery-stage.is-error::before {
        content: 'تصویر در دسترس نیست';
        position: absolute;
        inset: 0;
        z-index: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #64748b;
        font-size: 13px;
        font-weight: 700;
        pointer-events: none;
    }
    .product-popup-gallery-hero {
        position: relative;
        z-index: 1;
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
        opacity: 0;
        transition: opacity .26s ease;
    }
    .product-popup-gallery-stage.is-ready .product-popup-gallery-hero {
        opacity: 1;
    }
    .product-popup-gallery-stage.is-swapping .product-popup-gallery-hero {
        opacity: 0.35;
    }
    .product-popup-gallery-stage::after {
        content: '';
        position: absolute;
        inset: 0;
        z-index: 2;
        pointer-events: none;
        border-radius: inherit;
        box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.45);
    }

    .product-popup-gallery-dots {
        position: absolute;
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 3;
        display: none;
        align-items: center;
        gap: 6px;
        padding: 5px 10px;
        border-radius: 999px;
        background: rgba(15, 23, 42, 0.42);
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
        pointer-events: none;
    }
    .product-popup-gallery-dots.is-visible { display: inline-flex; }
    .product-popup-gallery-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.55);
        transition: background .18s ease, transform .18s ease;
    }
    .product-popup-gallery-dot.is-active {
        background: #ffffff;
        transform: scale(1.4);
    }

    .product-popup-gallery-thumbs {
        display: flex;
        gap: 8px;
        overflow-x: auto;
        padding: 2px 0 4px;
        scrollbar-width: thin;
        scroll-snap-type: x proximity;
    }
    .product-popup-gallery-thumbs:empty,
    .product-popup-gallery-thumbs.is-single { display: none; }
    .product-popup-gallery-thumbs::-webkit-scrollbar { height: 6px; }
    .product-popup-gallery-thumbs::-webkit-scrollbar-thumb {
        background: rgba(148, 163, 184, 0.55);
        border-radius: 999px;
    }
    .product-popup-gallery-thumb {
        position: relative;
        width: 72px;
        height: 72px;
        flex: 0 0 auto;
        border-radius: 12px;
        overflow: hidden;
        background: #fff;
        border: 2px solid transparent;
        cursor: pointer;
        scroll-snap-align: start;
        transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
    }
    .product-popup-gallery-thumb:hover {
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(15, 23, 42, 0.12);
    }
    .product-popup-gallery-thumb.is-active {
        border-color: #4f46e5;
        box-shadow: 0 4px 14px rgba(79, 70, 229, 0.28);
    }
    .product-popup-gallery-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }
    .product-popup-gallery-thumb-skel {
        position: absolute;
        inset: 0;
        background: linear-gradient(110deg, #e9edf4 8%, #f8fafc 18%, #e9edf4 33%);
        background-size: 220% 100%;
        animation: popup-gallery-shimmer 1.1s linear infinite;
    }

    .product-popup-separator {
        height: 1px;
        background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
        margin: 4px 0 14px;
    }

    .product-popup-desc-wrap,
    .product-popup-seo-wrap {
        margin-bottom: 14px;
    }
    .product-popup-desc-label {
        margin: 0 0 8px;
        font-size: 12px;
        font-weight: 800;
        color: #64748b;
    }
    .product-popup-desc-label--seo {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: #3730a3;
    }
    .product-popup-description {
        margin: 0;
        line-height: 2;
        color: #334155;
        font-size: 15px;
    }
    .product-popup-description--seo {
        background: #f8fafc;
        border: 1px solid #e2e8f0;
        border-radius: 14px;
        padding: 12px 14px;
        line-height: 1.85;
        color: #1e293b;
    }

    .product-popup-cta-section {
        margin: 0;
        padding: 12px;
        border-radius: 20px;
        border: 1px solid #e8edf5;
        background: linear-gradient(180deg, #fff, #f8fafc 96%);
        box-shadow: inset 0 1px 0 rgba(255,255,255,.75);
    }
    .product-popup-price-card {
        margin-top: 0;
        border: 1px solid #fbcfe8;
        background: linear-gradient(135deg, #fff1f7 0%, #ffe4ee 100%);
        border-radius: 18px;
        padding: 14px 16px;
        display: flex;
        align-items: center;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 10px 12px;
    }
    .product-popup-variant {
        margin-top: 12px;
        padding: 12px 14px;
        border-radius: 16px;
        border: 1px solid #e2e8f0;
        background: #fff;
    }
    .product-popup-variant[hidden] { display: none; }
    .product-popup-variant__head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        margin-bottom: 10px;
        flex-wrap: wrap;
    }
    .product-popup-variant__label {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        font-weight: 800;
        color: #0f172a;
    }
    .product-popup-variant__label i { color: #4f46e5; font-size: 16px; }
    .product-popup-variant__state {
        font-size: 12px;
        font-weight: 600;
        color: #64748b;
    }
    .product-popup-variant__state strong { color: #4f46e5; font-weight: 800; }
    .product-popup-variant__chips {
        display: grid;
        gap: 8px;
        grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
    }
    .product-popup-variant__chips--apparel {
        grid-template-columns: repeat(auto-fill, minmax(78px, 1fr));
    }
    .product-popup-variant__chip {
        -webkit-appearance: none;
        appearance: none;
        border: 1.5px solid #e2e8f0;
        background: #fff;
        color: #0f172a;
        font-size: 14px;
        font-weight: 800;
        border-radius: 12px;
        height: 44px;
        padding: 0 8px;
        cursor: pointer;
        position: relative;
        transition: border-color .14s ease, background .14s ease, color .14s ease, box-shadow .14s ease, transform .08s ease;
    }
    .product-popup-variant__chip:hover { border-color: #c4b5fd; background: #f8fafc; }
    .product-popup-variant__chip:active { transform: scale(.97); }
    .product-popup-variant__chip.is-selected {
        border-color: #4f46e5;
        background: linear-gradient(180deg, #eef2ff, #e0e7ff);
        color: #312e81;
        box-shadow: inset 0 0 0 1px #4f46e5;
    }
    @media (max-width: 540px) {
        .product-popup-variant__chips { grid-template-columns: repeat(5, minmax(0, 1fr)); }
        .product-popup-variant__chips--apparel { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    }
    .product-popup-price-main {
        font-size: clamp(20px, 2.4vw, 28px);
        font-weight: 900;
        color: #111827;
    }
    .product-popup-price-discount {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .product-popup-order-btn {
        margin-top: 10px;
        width: 100%;
        min-height: 50px;
        border: none;
        border-radius: 16px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        cursor: pointer;
        font-size: 14px;
        font-weight: 800;
        color: #fff;
        background: linear-gradient(135deg, #ff2d55, #ff5f84);
        box-shadow: 0 12px 28px rgba(255, 45, 85, 0.36);
        transition: transform .16s ease, box-shadow .16s ease, opacity .16s ease;
    }
    .product-popup-order-btn:hover {
        transform: translateY(-1px);
        box-shadow: 0 12px 28px rgba(255, 45, 85, 0.42);
    }
    .product-popup-order-btn:disabled {
        opacity: 0.7;
        cursor: wait;
        transform: none;
        box-shadow: none;
    }
    @keyframes fadeIn {
        from {opacity:0}
        to {opacity:1}
    }

    @keyframes slideUpIn {
        from {
            transform: translate3d(0, 34px, 0);
            opacity: 0;
        }
        to {
            transform: translate3d(0, 0, 0);
            opacity: 1;
        }
    }
    @keyframes popup-gallery-shimmer {
        to { background-position-x: -220%; }
    }

    @media (max-width: 640px) {
        #product-detail {
            padding: 10px;
            align-items: flex-end;
        }
        #product-detail .popup-box {
            width: 100%;
            max-height: min(90vh, 860px);
            border-radius: 24px 24px 0 0;
            padding: 0;
        }
        .product-popup-header {
            padding: 14px 14px 10px;
        }
        .product-popup-scroll {
            padding: 0 14px 10px;
        }
        .product-popup-footer {
            padding: 10px 14px calc(12px + env(safe-area-inset-bottom, 0px));
        }
        .product-popup-gallery-wrap {
            margin: 10px 0 12px;
            gap: 8px;
        }
        .product-popup-gallery-stage {
            border-radius: 16px;
            max-height: 70vw;
        }
        .product-popup-gallery-thumb {
            width: 60px;
            height: 60px;
            border-radius: 10px;
        }
        .product-popup-gallery-dots {
            bottom: 8px;
            padding: 4px 8px;
        }
        .product-popup-description {
            font-size: 14px;
        }
        .product-popup-price-card {
            border-radius: 14px;
            padding: 12px 12px;
            gap: 8px;
        }
        .product-popup-cta-section {
            border-radius: 16px;
            padding: 10px;
        }
    }

    /* نمایشگر عکس بزرگ */
    #image-viewer {
        backdrop-filter: blur(8px);
    }