:root {
            /* Colores principales */
            --primary-color: #00ff88;
            --primary-dark: #00cc6a;
            --secondary-color: #0066ff;
            --cyan: #00ffff;
            
            /* Colores de fondo */
            --dark-bg: #0a0a0a;
            --card-bg: #1a1a1a;
            --section-dark: #1a1a1a;
            
            /* Colores de texto */
            --text-light: #e0e0e0;
            --text-muted: #888888;
            --white: #ffffff;
            
            /* Gradientes */
            --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            --gradient-cyan: linear-gradient(135deg, var(--primary-color), var(--cyan));
            
            /* Espaciado */
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.5rem;
            --space-lg: 2rem;
            --space-xl: 3rem;
            
            /* Bordes y sombras */
            --border-radius: 8px;
            --shadow-light: 0 2px 10px rgba(0, 255, 136, 0.1);
            --shadow-medium: 0 5px 20px rgba(0, 255, 136, 0.15);
            --shadow-heavy: 0 10px 30px rgba(0, 255, 136, 0.2);
        }

        /* ===== RESET Y ESTILOS BASE ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--dark-bg);
            color: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* ===== LAYOUT Y CONTENEDORES ===== */
        .container {
            width: 100%;
            padding: 0 var(--space-md);
            margin: 0 auto;
        }

        @media (min-width: 768px) {
            .container {
                max-width: 720px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                max-width: 960px;
            }
        }

        @media (min-width: 1200px) {
            .container {
                max-width: 1140px;
            }
        }

        /* ===== TIPOGRAFÍA ===== */
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: var(--space-sm);
        }

        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }

        .gradient-text {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: inline-block;
        }

        /* ===== ENLACES Y BOTONES ===== */
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-xs);
            padding: 12px 30px;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            font-size: 0.9rem;
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }

        .btn:hover::before {
            left: 100%;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: var(--dark-bg);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-medium);
        }

        .btn-whatsapp {
            background: linear-gradient(135deg, #25D366, #128C7E);
            color: var(--white);
        }

        .btn-whatsapp:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(37, 211, 102, 0.4);
        }

        .btn-outline {
            background-color: transparent;
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
        }

        .btn-outline:hover {
            background-color: var(--primary-color);
            color: var(--dark-bg);
        }

        .btn-large {
            padding: 15px 40px;
            font-size: 1rem;
        }

        /* ===== SECCIONES ===== */
        .section {
            padding: var(--space-xl) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--space-xl);
            position: relative;
        }

        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: var(--space-sm);
        }

        .section-header p {
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.1rem;
        }

        .section-header::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: var(--gradient-primary);
        }

        .text-center { text-align: center; }

        /* ===== HEADER Y NAVEGACIÓN ===== */
        .header {
            background-color: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 255, 136, 0.2);
            transition: all 0.3s ease;
        }

        .header.scrolled {
            padding: 10px 0;
            box-shadow: var(--shadow-heavy);
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            text-decoration: none;
        }

        .logo h1 {
            font-size: 1.8rem;
            margin: 0;
        }

        /* Navegación Principal */
        .nav-main ul {
            display: flex;
            list-style: none;
            gap: var(--space-lg);
            margin: 0;
            padding: 0;
        }

        .nav-main a {
            color: var(--white);
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            text-decoration: none;
        }

        .nav-main a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: width 0.3s ease;
        }

        .nav-main a:hover::after,
        .nav-main a:focus::after,
        .nav-main a[aria-current="page"]::after {
            width: 100%;
        }

        .nav-main a:hover,
        .nav-main a:focus {
            color: var(--primary-color);
        }

        /* Menú Móvil */
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            gap: 4px;
        }

        .hamburger-line {
            width: 25px;
            height: 3px;
            background: var(--white);
            transition: all 0.3s ease;
            border-radius: 2px;
        }

        .mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
            transform: rotate(45deg) translate(6px, 6px);
        }

        .mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        /* ===== PRODUCTOS ===== */
        .productos-hero {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), 
                        url('https://images.unsplash.com/photo-1518709268805-4e9042af2176?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') center/cover no-repeat;
            padding: 140px 0 80px;
            text-align: center;
        }

        .hero-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: var(--space-md);
            text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
            animation: fadeInUp 0.8s ease;
        }

        .hero-subtitle {
            font-size: 1.3rem;
            color: var(--text-light);
            margin-bottom: var(--space-lg);
            animation: fadeInUp 0.8s ease 0.2s both;
        }

        .hero-actions {
            display: flex;
            gap: var(--space-md);
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 0.8s ease 0.4s both;
        }

        .categorias-navegacion {
            background: var(--card-bg);
            padding: var(--space-md) 0;
            position: sticky;
            top: 80px;
            z-index: 100;
            border-bottom: 1px solid rgba(0, 255, 136, 0.2);
        }
        
        .categorias-navegacion ul {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: var(--space-sm);
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .categorias-navegacion a {
            color: var(--text-light);
            text-decoration: none;
            padding: var(--space-xs) var(--space-md);
            border-radius: var(--border-radius);
            transition: all 0.3s ease;
            font-weight: 500;
        }
        
        .categorias-navegacion a:hover,
        .categorias-navegacion a.active {
            background: var(--gradient-primary);
            color: var(--dark-bg);
        }
        
        .productos-categoria {
            padding: var(--space-xl) 0;
        }
        
        .productos-categoria:not(:first-child) {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .categoria-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        
        .categoria-header h2 {
            font-size: 2.2rem;
            margin-bottom: var(--space-sm);
        }
        
        .categoria-header p {
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .productos-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--space-lg);
        }

        .producto-card {
            background: var(--card-bg);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: all 0.3s ease;
            position: relative;
        }

        .producto-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-medium);
        }

        .producto-badge {
            position: absolute;
            top: 10px;
            right: 10px;
            background: var(--gradient-primary);
            color: var(--dark-bg);
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
            z-index: 2;
        }

        .producto-img {
            height: 200px;
            background: var(--dark-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: var(--space-md);
            border-bottom: 1px solid rgba(0, 255, 136, 0.2);
        }

        .producto-img img {
            max-width: 100%;
            max-height: 160px;
            transition: transform 0.3s ease;
        }

        .producto-card:hover .producto-img img {
            transform: scale(1.05);
        }

        .producto-info {
            padding: var(--space-md);
        }

        .producto-info h3 {
            margin-bottom: var(--space-xs);
            color: var(--white);
        }

        .producto-desc {
            color: var(--text-light);
            margin-bottom: var(--space-sm);
            font-size: 0.9rem;
        }

        .producto-especificaciones {
            margin-bottom: var(--space-sm);
        }

        .especificacion {
            display: flex;
            justify-content: space-between;
            margin-bottom: 4px;
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .producto-precio {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: var(--space-sm);
        }

        .precio {
            font-weight: 700;
            color: var(--primary-color);
            font-size: 1.2rem;
        }
        
        .producto-stock {
            display: inline-block;
            padding: 4px 8px;
            background: var(--gradient-primary);
            color: var(--dark-bg);
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
        }
        
        .producto-envio {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            color: var(--primary-color);
            font-size: 0.9rem;
            margin-top: var(--space-sm);
        }
        
        .producto-acciones {
            display: flex;
            gap: var(--space-sm);
            margin-top: var(--space-md);
        }
        
        .btn-producto {
            flex: 1;
            justify-content: center;
            font-size: 0.9rem;
            padding: 10px 15px;
        }

        /* ===== FILTROS Y BÚSQUEDA ===== */
        .filtros-busqueda {
            background: var(--card-bg);
            padding: var(--space-md);
            border-radius: var(--border-radius);
            margin-bottom: var(--space-lg);
        }

        .busqueda-container {
            display: flex;
            gap: var(--space-sm);
            margin-bottom: var(--space-md);
        }

        .busqueda-input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid rgba(0, 255, 136, 0.3);
            border-radius: var(--border-radius);
            background: var(--dark-bg);
            color: var(--white);
            font-size: 1rem;
        }

        .busqueda-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        .filtros-container {
            display: flex;
            gap: var(--space-md);
            flex-wrap: wrap;
        }

        .filtro-grupo {
            flex: 1;
            min-width: 200px;
        }

        .filtro-label {
            display: block;
            margin-bottom: var(--space-xs);
            color: var(--text-light);
            font-weight: 500;
        }

        .filtro-select {
            width: 100%;
            padding: 10px 12px;
            border: 2px solid rgba(0, 255, 136, 0.3);
            border-radius: var(--border-radius);
            background: var(--dark-bg);
            color: var(--white);
            font-size: 0.9rem;
        }

        .filtro-select:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        /* ===== FOOTER ===== */
        .footer {
            background: var(--section-dark);
            color: var(--white);
            padding: var(--space-xl) 0 var(--space-md);
            border-top: 1px solid rgba(0, 255, 136, 0.2);
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--space-xl);
            margin-bottom: var(--space-xl);
        }

        .footer-logo h3 {
            color: var(--primary-color);
            margin-bottom: var(--space-sm);
        }

        .footer-links h4,
        .footer-contact h4 {
            margin-bottom: var(--space-md);
            position: relative;
            padding-bottom: var(--space-xs);
        }

        .footer-links h4::after,
        .footer-contact h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--gradient-primary);
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: var(--space-xs);
        }

        .footer-links a {
            color: var(--text-light);
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--primary-color);
        }

        .footer-contact p {
            margin-bottom: var(--space-xs);
            color: var(--text-light);
            display: flex;
            align-items: flex-start;
            gap: var(--space-xs);
        }

        .social-links {
            display: flex;
            gap: var(--space-sm);
            margin-top: var(--space-md);
        }

        .social-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--dark-bg);
            border-radius: 50%;
            color: var(--white);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .social-link:hover {
            background: var(--gradient-primary);
            color: var(--dark-bg);
            transform: translateY(-2px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: var(--space-md);
            border-top: 1px solid var(--text-muted);
            color: var(--text-light);
            font-size: 0.9rem;
        }

        /* ===== BOTÓN FLOTANTE WHATSAPP ===== */
        .whatsapp-float {
            position: fixed;
            bottom: 25px;
            right: 25px;
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #25D366, #128C7E);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
            z-index: 1000;
            transition: all 0.3s ease;
            animation: pulse-whatsapp 2s infinite;
        }

        .whatsapp-float:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
        }

        .whatsapp-float i {
            font-size: 28px;
        }

        @keyframes pulse-whatsapp {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        /* ===== ANIMACIONES ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in {
            animation: fadeInUp 0.6s ease-out;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            
            .mobile-menu-toggle {
                display: flex;
            }
            
            .nav-main {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: var(--dark-bg);
                border-top: 1px solid rgba(0, 255, 136, 0.2);
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s ease;
            }
            
            .nav-main.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            
            .nav-main ul {
                flex-direction: column;
                gap: 0;
                padding: var(--space-md);
            }
            
            .nav-main li {
                width: 100%;
            }
            
            .nav-main a {
                display: block;
                padding: var(--space-sm);
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            
            .nav-main a:last-child {
                border-bottom: none;
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .hero-actions .btn {
                width: 100%;
                max-width: 300px;
            }
            
            .categorias-navegacion ul {
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 10px;
            }
            
            .producto-acciones {
                flex-direction: column;
            }
            
            .productos-grid {
                grid-template-columns: 1fr;
            }
            
            .filtros-container {
                flex-direction: column;
            }
            
            .filtro-grupo {
                min-width: 100%;
            }
            
            .whatsapp-float {
                bottom: 20px;
                right: 20px;
                width: 55px;
                height: 55px;
            }
            
            .whatsapp-float i {
                font-size: 24px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 var(--space-sm);
            }
            
            .section {
                padding: var(--space-lg) 0;
            }
            
            .section-header h2 {
                font-size: 2rem;
            }
            
            .hero {
                padding: 100px 0 60px;
                min-height: auto;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .whatsapp-float {
                bottom: 15px;
                right: 15px;
                width: 50px;
                height: 50px;
            }
            
            .whatsapp-float i {
                font-size: 22px;
            }
        }