:root {
    --primary-gold: #bfa15f;
    --primary-gold-dark: #a08343;
    --dark-sultan: #111111;
    --light-sultan: #f8f9fa;
    --border-color: #eaeaea;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.04);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --success-color: #16a34a;
    --danger-color: #dc3545;
}

body {
    background-color: #fafafa;
}

/* --- هدر موبایل جزئیات محصول — اصلاح شده برای نمایش صحیح --- */
.mobile-top-header {
    position: relative;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: var(--shadow-soft);
    z-index: 100;
    margin-bottom: 14px;
}

    .mobile-top-header .btn-nav {
        width: 42px;
        height: 42px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--border-color);
        border-radius: 14px;
        background: var(--light-sultan);
        color: var(--dark-sultan);
        font-size: 18px;
        cursor: pointer;
        transition: var(--transition-smooth);
        text-decoration: none;
        flex-shrink: 0;
    }

        .mobile-top-header .btn-nav:hover {
            background: #ffffff;
            border-color: var(--primary-gold);
            color: var(--primary-gold);
        }

    .mobile-top-header .header-title {
        font-size: 17px;
        font-weight: 800;
        color: var(--dark-sultan);
        text-align: center;
        flex: 1;
    }

@media (max-width: 991.98px) {
    .mobile-top-header {
        border-radius: 15px;
    }
}

@media (max-width: 576px) {
    .mobile-top-header {
        padding: 10px 12px;
        border-radius: 16px;
    }

        .mobile-top-header .btn-nav {
            width: 38px;
            height: 38px;
            font-size: 16px;
        }

        .mobile-top-header .header-title {
            font-size: 15px;
        }
}

.page-wrapper {
    position: relative;
    min-height: 500px;
}

.glass-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 30px;
    box-shadow: var(--shadow-soft);
}

.product-image-box {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 20px;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 520px;
}

.product-carousel-fixed {
    width: 100%;
    min-height: 480px;
}

    .product-carousel-fixed .carousel-inner {
        width: 100%;
        min-height: 480px;
    }

    .product-carousel-fixed .carousel-item {
        width: 100%;
        min-height: 480px;
        background: transparent;
    }

        .product-carousel-fixed .carousel-item.active,
        .product-carousel-fixed .carousel-item-next,
        .product-carousel-fixed .carousel-item-prev {
            display: flex;
            align-items: center;
            justify-content: center;
        }

.product-img {
    cursor: pointer;
    transition: var(--transition-smooth);
    object-fit: contain;
    border-radius: 18px !important;
    max-height: 420px;
    width: 100%;
}

    .product-img:hover {
        transform: scale(1.04);
    }

.product-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--dark-sultan);
    line-height: 1.5;
    margin-bottom: 15px;
}

.badge-stock {
    background-color: rgba(22, 163, 74, 0.08);
    color: #16a34a;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
}

    .badge-stock.out-of-stock {
        background-color: rgba(220, 53, 69, 0.08);
        color: var(--danger-color);
    }

.variant-options .btn-variant {
    display: inline-block;
    background-color: var(--light-sultan);
    border: 1px solid var(--border-color);
    padding: 10px 18px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 13px;
    color: #555;
    margin-left: 8px;
    margin-bottom: 8px;
    transition: var(--transition-smooth);
}

    .variant-options .btn-variant:hover {
        background: #ffffff;
        border-color: var(--primary-gold);
    }

.key-features .feature-item {
    background: var(--light-sultan);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition-smooth);
    height: 100%;
}

    .key-features .feature-item:hover {
        background: #ffffff;
        border-color: var(--primary-gold);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03);
    }

.key-features .feature-icon {
    width: 44px;
    height: 44px;
    background: #ffffff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-gold);
    font-size: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.key-features .feature-text div:first-child {
    font-size: 11px;
    color: #777;
    margin-bottom: 2px;
}

.key-features .feature-text div:last-child {
    font-size: 13px;
    font-weight: 800;
    color: var(--dark-sultan);
}

/* --- بخش قیمت --- */
.action-bar.desktop-action-bar {
    background: var(--light-sultan);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 18px 22px;
    margin-top: 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    gap: 20px;
}

    .action-bar.desktop-action-bar .price-box {
        display: flex;
        align-items: center;
        gap: 10px;
        margin: 0;
        align-self: center;
    }

.price-box {
    font-size: 26px;
    font-weight: 900;
    color: var(--dark-sultan);
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 0 !important;
}

    .price-box span {
        font-size: 14px;
        color: #666;
        font-weight: 600;
        margin-right: 4px;
    }

.old-price {
    font-size: 15px;
    color: #999;
    text-decoration: line-through;
    font-weight: 700;
}

.discount-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(22, 163, 74, 0.09);
    color: var(--success-color);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
}

.cart-card {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    gap: 8px;
    min-width: 200px;
}

    .cart-card .cart-add-btn,
    .cart-card .cart-control,
    .cart-card .cart-remove-btn {
        margin: 0;
    }

    .cart-card .cart-status-text {
        width: 100%;
        margin-top: 0;
        text-align: center;
    }

.cart-add-btn {
    border: none;
    outline: none;
    background: linear-gradient(135deg, var(--dark-sultan), #333333);
    color: #fff;
    padding: 14px 28px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 14px;
    min-width: 200px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: var(--transition-smooth);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

    .cart-add-btn:hover {
        background: linear-gradient(135deg, var(--primary-gold), var(--primary-gold-dark));
        transform: translateY(-2px);
        box-shadow: 0 12px 25px rgba(191, 161, 95, 0.3);
    }

.cart-control {
    display: inline-flex;
    align-items: center;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 4px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.cart-qty-btn {
    border: none;
    background: transparent;
    width: 40px;
    height: 40px;
    color: var(--primary-gold);
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

    .cart-qty-btn:hover {
        background: var(--light-sultan);
        color: var(--dark-sultan);
    }

.cart-qty-value {
    min-width: 45px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 800;
    color: var(--dark-sultan);
    border: none;
}

.cart-status-text {
    width: 100%;
    font-size: 12px;
    font-weight: 700;
    color: var(--success-color);
    display: none;
    margin-top: 2px;
    text-align: center;
}

    .cart-status-text.show {
        display: block;
        animation: fadeCartStatus 1.8s ease forwards;
    }

.inventory-error-text {
    width: 100%;
    font-size: 12px;
    font-weight: 700;
    color: var(--danger-color);
    display: none;
    text-align: center;
    margin-top: 6px;
}

@keyframes fadeCartStatus {
    0% {
        opacity: 0;
        transform: translateY(4px);
    }

    20% {
        opacity: 1;
        transform: translateY(0);
    }

    80% {
        opacity: 1;
    }

    100% {
        opacity: 0;
    }
}

/* --- تب‌ها --- */
.custom-tabs {
    border-bottom: 2px solid var(--border-color);
    gap: 25px;
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

    .custom-tabs::-webkit-scrollbar {
        display: none;
    }

    .custom-tabs .nav-item {
        flex-shrink: 0;
    }

    .custom-tabs .nav-link {
        font-weight: 700;
        color: #888;
        border: none !important;
        padding: 12px 10px;
        position: relative;
        background: transparent !important;
        transition: var(--transition-smooth);
    }

        .custom-tabs .nav-link.active {
            color: var(--dark-sultan) !important;
        }

            .custom-tabs .nav-link.active::after {
                content: '';
                position: absolute;
                bottom: -2px;
                left: 0;
                width: 100%;
                height: 3px;
                background-color: var(--primary-gold);
                border-radius: 50px;
            }

.tab-content-box {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 24px 24px;
    padding: 30px;
    box-shadow: var(--shadow-soft);
}

/* --- موبایل --- */
.mobile-action-bar {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-top: 1px solid rgba(234, 234, 234, 0.95);
    box-shadow: 0 -10px 30px rgba(0,0,0,0.06);
    padding: 14px 16px calc(14px + env(safe-area-inset-bottom));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    z-index: 1030;
}

.mobile-price {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 110px;
    flex-shrink: 0;
}

    .mobile-price span:first-child {
        font-size: 11px;
        color: #888;
        font-weight: 600;
    }

    .mobile-price span:last-child {
        font-size: 18px;
        font-weight: 900;
        color: var(--dark-sultan);
        line-height: 1.4;
    }

.mobile-old-price {
    font-size: 12px;
    color: #999;
    text-decoration: line-through;
    font-weight: 700;
}

.mobile-discount {
    font-size: 11px;
    font-weight: 800;
    color: var(--success-color);
    margin-top: 2px;
}

.mobile-cart-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    width: 100%;
    max-width: 240px;
}

/* --- ریسپانسیو --- */
@media (max-width: 991.98px) {
    .page-wrapper {
        margin-top: 15px !important;
        padding-bottom: 110px;
    }

        .page-wrapper > .container {
            margin-top: 0 !important;
        }

    .glass-card {
        padding: 22px;
    }

    .product-image-box {
        min-height: 420px;
        padding: 16px;
    }

    .product-carousel-fixed {
        min-height: 380px;
    }

        .product-carousel-fixed .carousel-inner {
            min-height: 380px;
        }

        .product-carousel-fixed .carousel-item {
            min-height: 380px;
        }

    .product-img {
        max-height: 340px;
    }

    .tab-content-box {
        padding: 22px;
    }
}

@media (max-width: 576px) {
    .page-wrapper {
        margin-top: 12px !important;
        padding-left: 12px !important;
        padding-right: 12px !important;
        padding-bottom: 110px;
    }

    .glass-card {
        padding: 18px;
    }

    .product-image-box {
        min-height: 320px;
        padding: 12px;
        border-radius: 20px;
    }

    .product-carousel-fixed {
        min-height: 280px;
    }

        .product-carousel-fixed .carousel-inner {
            min-height: 280px;
        }

        .product-carousel-fixed .carousel-item {
            min-height: 280px;
        }

    .product-img {
        max-height: 250px;
        border-radius: 14px !important;
    }

    .product-title {
        font-size: 20px;
    }

    .price-box {
        font-size: 22px;
    }

    .key-features .feature-item {
        padding: 12px;
        gap: 12px;
    }

    .key-features .feature-icon {
        width: 38px;
        height: 38px;
        font-size: 18px;
    }

    .tab-content-box {
        padding: 16px;
        border-radius: 0 0 18px 18px;
    }

    .mobile-action-bar {
        padding: 12px 12px calc(12px + env(safe-area-inset-bottom));
    }

    .mobile-price {
        min-width: 100px;
    }

        .mobile-price span:last-child {
            font-size: 16px;
        }
}

/* --- توست --- */
.custom-toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.custom-toast {
    min-width: 280px;
    background: #dc3545;
    color: #fff;
    border-radius: 12px;
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 700;
    text-align: center;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

    .custom-toast.show {
        opacity: 1;
        transform: translateY(0);
    }

/* مودال اختصاصی افزودن به سبد خرید */
.cart-added-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    z-index: 999999;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

    .cart-added-modal-overlay.is-open {
        display: flex;
        opacity: 1;
    }

.cart-added-modal {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 30px;
    width: 90%;
    max-width: 420px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    text-align: center;
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cart-added-modal-overlay.is-open .cart-added-modal {
    transform: scale(1);
}

.cart-added-modal-close {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--light-sultan);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    color: #777;
    transition: var(--transition-smooth);
}

    .cart-added-modal-close:hover {
        background: #ffffff;
        color: var(--dark-sultan);
    }

.cart-added-modal-icon {
    width: 64px;
    height: 64px;
    background: rgba(22, 163, 74, 0.1);
    color: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 16px auto;
}

.cart-added-modal-title {
    font-size: 19px;
    font-weight: 800;
    color: var(--dark-sultan);
    margin-bottom: 8px;
}

.cart-added-modal-text {
    font-size: 13px;
    color: #666;
    margin-bottom: 24px;
    line-height: 1.6;
}

.cart-added-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cart-added-modal-primary {
    background: linear-gradient(135deg, var(--dark-sultan), #333333);
    color: #ffffff;
    border: none;
    padding: 12px 20px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: block;
}

    .cart-added-modal-primary:hover {
        background: linear-gradient(135deg, var(--primary-gold), var(--primary-gold-dark));
        color: #ffffff;
    }

.cart-added-modal-secondary {
    background: var(--light-sultan);
    border: 1px solid var(--border-color);
    color: #444;
    padding: 12px 20px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

    .cart-added-modal-secondary:hover {
        background: #ffffff;
        border-color: var(--primary-gold);
    }