:root {
            --primary: #ffe600;
            --primary-dark: #ffd100;
            --primary-border: #e6cf00;
            --primary-light: #fffde6;
            --accent: #3483fa;
            --accent-hover: #2968c8;
            --meli-green: #00a650;
            --dark: #0b1329;
            --text-main: #333333;
            --text-muted: #666666;
            --bg-light: #ffffff;
            --border-color: #e2e8f0;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 14px -2px rgba(15, 23, 42, 0.08);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.6;
        }

        /* Top Bar */
        .top-bar {
            background: #181f38;
            color: #cbd5e1;
            font-size: 12px;
            padding: 7px 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .top-bar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* Header Mercado Libre Yellow */
        .main-header {
            background: #ffe600;
            border-bottom: 1px solid #e6cf00;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: #2d3277;
            color: #ffe600;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            box-shadow: 0 2px 6px rgba(45, 50, 119, 0.25);
        }
        .brand-name {
            font-size: 21px;
            font-weight: 800;
            color: #2d3277;
            letter-spacing: -0.3px;
        }
        .brand-name span { color: #00a650; }

        .btn-back-nav {
            text-decoration: none;
            color: #2d3277;
            font-size: 13.5px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 8px;
            border: 1px solid rgba(45, 50, 119, 0.2);
            background: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .btn-back-nav:hover {
            background: #ffffff;
            color: #1e245a;
            border-color: #2d3277;
        }

        /* Breadcrumbs */
        .breadcrumbs {
            padding: 18px 0;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumbs a {
            color: #2d3277;
            text-decoration: none;
            font-weight: 600;
        }
        .breadcrumbs a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .breadcrumbs span {
            margin: 0 8px;
        }

        /* Detalle Layout */
        .product-detail-card {
            background: white;
            border-radius: var(--radius-lg);
            border: 1px solid #dcdcdc;
            box-shadow: 0 2px 10px rgba(0,0,0,0.06);
            padding: 35px;
            margin-bottom: 40px;
        }
        .detail-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: start;
        }

        /* Galería de Imagen */
        .product-gallery {
            position: sticky;
            top: 90px;
        }
        .main-image-box {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid #e2e8f0;
            height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            position: relative;
            padding: 30px 24px;
        }
        .main-image-box img {
            max-width: 95%;
            max-height: 92%;
            width: auto;
            height: auto;
            object-fit: contain;
            display: block;
            margin: auto;
            mix-blend-mode: multiply;
            transition: transform 0.3s ease;
        }
        .main-image-box:hover img {
            transform: scale(1.04);
        }
        .main-image-box .icon-placeholder {
            font-size: 90px;
            color: #94a3b8;
        }
        /* Insignias Flotantes Glassmorphism en Detalle */
        .floating-badges-row {
            position: absolute;
            top: 14px;
            left: 14px;
            right: 14px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            pointer-events: none;
            z-index: 4;
        }
        .glass-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 11.5px;
            font-weight: 700;
            line-height: 1;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            letter-spacing: 0.2px;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
        }
        .glass-badge-stock {
            background: rgba(16, 185, 129, 0.22);
            color: #059669;
            border: 1px solid rgba(16, 185, 129, 0.5);
            font-weight: 800;
        }
        .glass-badge-stock.low {
            background: rgba(245, 158, 11, 0.22);
            color: #d97706;
            border: 1px solid rgba(245, 158, 11, 0.5);
        }
        .glass-badge-feature {
            background: rgba(15, 23, 42, 0.7);
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .glass-badge-feature.warranty i {
            color: #34d399;
        }
        .glass-badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: currentColor;
            box-shadow: 0 0 8px currentColor;
            display: inline-block;
        }

        /* Info del Producto */
        .product-info-col {
            display: flex;
            flex-direction: column;
        }
        .category-pill {
            display: inline-block;
            background: #ffe600;
            color: #2d3277;
            font-size: 11.5px;
            font-weight: 800;
            padding: 4px 12px;
            border-radius: 20px;
            width: fit-content;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .product-main-title {
            font-size: 26px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .product-rating {
            display: flex;
            align-items: center;
            gap: 6px;
            color: #f59e0b;
            font-size: 14px;
            margin-bottom: 20px;
        }
        .product-rating span {
            color: var(--text-muted);
            font-size: 13px;
            margin-left: 4px;
        }

        .price-section {
            background: #f8fafc;
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 25px;
        }
        .price-label {
            font-size: 12px;
            color: var(--text-muted);
            text-transform: uppercase;
            font-weight: 600;
        }
        .price-amount {
            font-size: 34px;
            font-weight: 800;
            color: #b91c1c;
            line-height: 1.1;
        }
        .price-note {
            font-size: 12px;
            color: #10b981;
            font-weight: 600;
            margin-top: 4px;
        }

        .stock-status {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            font-weight: 600;
        }
        .stock-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #059669;
            background: #ecfdf5;
            padding: 6px 14px;
            border-radius: 6px;
        }

        .action-buttons {
            display: flex;
            gap: 14px;
            margin-bottom: 30px;
        }
        .btn-whatsapp-buy {
            flex: 1;
            background: #25d366;
            color: white;
            border: none;
            padding: 14px 20px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 700;
            text-decoration: none;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            box-shadow: 0 4px 14px rgba(37, 211, 102, 0.3);
            transition: var(--transition);
        }
        .btn-whatsapp-buy:hover {
            background: #22c55e;
            transform: translateY(-2px);
        }
        .btn-store-consult {
            background: white;
            color: var(--dark);
            border: 1px solid var(--border-color);
            padding: 14px 20px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .btn-store-consult:hover {
            background: #f1f5f9;
        }

        /* Características & Ficha */
        .product-desc-box {
            border-top: 1px solid var(--border-color);
            padding-top: 25px;
        }
        .section-subtitle {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .desc-text {
            color: #475569;
            font-size: 14.5px;
            line-height: 1.7;
            margin-bottom: 25px;
            white-space: pre-line;
        }

        .specs-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 13.5px;
        }
        .specs-table td {
            padding: 10px 14px;
            border-bottom: 1px solid #f1f5f9;
        }
        .specs-table td:first-child {
            font-weight: 600;
            color: var(--dark);
            width: 35%;
            background: #f8fafc;
        }
        .specs-table td:last-child {
            color: #64748b;
        }

        /* Tienda Beneficios en detalle */
        .local-guarantee-card {
            background: #f0fdf4;
            border: 1px solid #bbf7d0;
            border-radius: var(--radius-md);
            padding: 18px;
            margin-top: 25px;
            display: flex;
            gap: 15px;
            align-items: center;
        }
        .guarantee-icon {
            font-size: 28px;
            color: #00a650;
        }
        .guarantee-text h5 {
            font-size: 14px;
            color: #14532d;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .guarantee-text p {
            font-size: 12.5px;
            color: #166534;
        }

        /* Footer */
        .footer {
            background: #060a14;
            color: #94a3b8;
            padding: 24px 20px;
            font-size: 13px;
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: auto;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-socials {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .footer-social-link {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: #cbd5e1;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 15px;
            transition: var(--transition);
        }
        .footer-social-link:hover {
            background: var(--primary);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* Botón Flotante de WhatsApp */
        .whatsapp-float-btn {
            position: fixed;
            bottom: 28px;
            right: 28px;
            background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
            color: white;
            border-radius: 50px;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
            text-decoration: none;
            z-index: 9999;
            font-weight: 700;
            font-size: 14.5px;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            animation: floatPulse 2.5s infinite;
        }
        .whatsapp-float-btn i {
            font-size: 24px;
        }
        .whatsapp-float-btn:hover {
            transform: scale(1.08) translateY(-4px);
            box-shadow: 0 10px 25px rgba(37, 211, 102, 0.6);
            color: white;
        }
        @keyframes floatPulse {
            0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6); }
            70% { box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
            100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
        }

        /* ========================================================
           RESPONSIVE DESIGN DETALLE DE PRODUCTO (MÓVILES Y TABLETS)
           ======================================================== */
        @media (max-width: 992px) {
            .detail-grid { 
                grid-template-columns: 1fr; 
                gap: 24px;
            }
            .product-gallery {
                position: relative;
                top: 0;
            }
            .main-image-box {
                height: 380px;
            }
            .product-detail-card {
                padding: 24px 20px;
                margin-bottom: 25px;
            }
            .product-main-title {
                font-size: 23px;
            }
        }

        @media (max-width: 768px) {
            .top-bar-content {
                flex-direction: column;
                text-align: center;
                gap: 4px;
                font-size: 11px;
            }
            .header-content {
                gap: 8px;
            }
            .header-content .user-label-text {
                display: none;
            }
            .header-content .action-button.user-btn {
                padding: 8px 10px !important;
            }
            .header-content .cart-trigger-btn {
                padding: 8px 10px !important;
                gap: 6px !important;
            }
            .header-content .cart-trigger-btn .main-value {
                display: none;
            }
            .brand-name {
                font-size: 16.5px;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
                border-radius: 8px;
            }
            .btn-back-nav {
                padding: 7px 10px;
                font-size: 12px;
                gap: 5px;
            }
            .breadcrumbs {
                padding: 12px 0;
                font-size: 12px;
                overflow-x: auto;
                white-space: nowrap;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .breadcrumbs::-webkit-scrollbar {
                display: none;
            }
            .product-detail-card {
                padding: 16px 14px;
                border-radius: 14px;
                margin-bottom: 20px;
                animation: detailCardEntrance 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            }
            .main-image-box {
                height: 280px;
                padding: 14px 10px;
            }
            .main-image-box .icon-placeholder {
                font-size: 60px;
            }
            .floating-badges-row {
                top: 10px;
                left: 10px;
                right: 10px;
                gap: 6px;
            }
            .glass-badge {
                font-size: 10.5px;
                padding: 4px 8px;
            }
            .product-main-title {
                font-size: 19px;
                line-height: 1.35;
                margin-bottom: 10px;
            }
            .product-rating {
                font-size: 12.5px;
                margin-bottom: 15px;
                flex-wrap: wrap;
            }
            .product-rating span {
                font-size: 12px;
            }
            .price-section {
                padding: 14px;
                margin-bottom: 16px;
            }
            .price-amount {
                font-size: 26px;
            }
            .quantity-selection-box {
                padding: 14px !important;
                margin-bottom: 16px !important;
            }
            .quantity-selection-box > div:first-child {
                flex-direction: column;
                align-items: flex-start !important;
                gap: 4px;
            }
            .action-buttons { 
                display: grid;
                grid-template-columns: 1fr;
                gap: 10px;
                margin-bottom: 22px;
            }
            .btn-whatsapp-buy, .btn-store-consult {
                width: 100%;
                justify-content: center;
                padding: 12px 14px;
                font-size: 14px;
                border-radius: 10px;
                min-height: 46px;
            }
            .specs-table {
                display: block;
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .specs-table tbody {
                display: table;
                width: 100%;
            }
            .specs-table td {
                padding: 9px 10px;
                font-size: 12px;
                word-break: break-word;
            }
            .specs-table td:first-child {
                width: 40%;
                font-size: 11.5px;
            }
            .local-guarantee-card {
                padding: 14px;
                gap: 12px;
                margin-top: 20px;
            }
            .guarantee-icon {
                font-size: 22px;
            }
            .guarantee-text h5 {
                font-size: 13px;
            }
            .guarantee-text p {
                font-size: 12px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start !important;
                gap: 8px;
            }
            .footer {
                padding: 20px 16px 85px 16px; /* Espacio para barra flotante móvil */
                text-align: center;
            }
            .footer-content {
                flex-direction: column;
                gap: 12px;
                justify-content: center;
            }
            .whatsapp-float-btn {
                bottom: 74px; /* elevar para no chocar con la barra de compra */
                right: 14px;
                padding: 0;
                border-radius: 50%;
                width: 48px;
                height: 48px;
                justify-content: center;
                box-shadow: 0 4px 16px rgba(37, 211, 102, 0.45);
            }
            .whatsapp-float-btn span {
                display: none;
            }
            .whatsapp-float-btn i {
                font-size: 24px;
            }
        }

        /* Barra de Compra Rápida Inferior Fija para Móviles */
        .mobile-quick-action-bar {
            display: none;
        }

        @media (max-width: 768px) {
            .mobile-quick-action-bar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: #ffffff;
                border-top: 1px solid #e2e8f0;
                padding: 10px 14px;
                box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.08);
                z-index: 999;
                align-items: center;
                justify-content: space-between;
                gap: 12px;
            }
            .mobile-bar-price {
                display: flex;
                flex-direction: column;
            }
            .mobile-bar-price-label {
                font-size: 10px;
                font-weight: 700;
                color: #64748b;
                text-transform: uppercase;
                letter-spacing: 0.3px;
            }
            .mobile-bar-price-val {
                font-size: 18px;
                font-weight: 900;
                color: #0f172a;
                line-height: 1.1;
            }
            .mobile-bar-buttons {
                display: flex;
                align-items: center;
                gap: 8px;
                flex: 1;
                justify-content: flex-end;
            }
            .mobile-bar-btn-wa {
                width: 42px;
                height: 42px;
                border-radius: 10px;
                background: #f0fdf4;
                color: #00a650;
                border: 1.5px solid #00a650;
                display: flex;
                align-items: center;
                justify-content: center;
                font-size: 19px;
                text-decoration: none;
                flex-shrink: 0;
            }
            .mobile-bar-btn-cart {
                flex: 1;
                max-width: 190px;
                height: 42px;
                border-radius: 10px;
                background: #3483fa;
                color: #ffffff;
                border: none;
                font-size: 13px;
                font-weight: 800;
                display: flex;
                align-items: center;
                justify-content: center;
                gap: 7px;
                cursor: pointer;
                box-shadow: 0 3px 10px rgba(52, 131, 250, 0.3);
            }
        }

        @keyframes detailCardEntrance {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 420px) {
            .container {
                padding: 0 10px;
            }
            .main-image-box {
                height: 240px;
                padding: 10px 6px;
            }
            .product-main-title {
                font-size: 17px;
            }
            .price-amount {
                font-size: 22px;
            }
            .local-guarantee-card {
                padding: 12px;
                gap: 10px;
            }
            .guarantee-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .quantity-selection-box {
                padding: 12px !important;
            }
            .detail-thumb-btn {
                width: 54px !important;
                height: 42px !important;
            }
        }