:root {
    /* Primary Colors */
    /* --color-primary: #d97706;
            --color-primary-dark: #b45309;
            --color-primary-darker: #92400e;
            --color-primary-light: #fbbf24;
            --color-primary-lighter: #fef3c7;
            --color-primary-lightest: #fde68a; */
            --color-primary: #417faa;
            --color-primary-dark: #2e536f;
            --color-primary-darker: #1e3a8a;
            --color-primary-light: #3b6b8e;
            --color-primary-lighter: #dbeafe;
            --color-primary-lightest: #eff6ff;

            /* Secondary Colors (Blue theme) */
            /* --color-secondary: #417faa;
            --color-secondary-dark: #2e536f;
            --color-secondary-darker: #1e3a8a;
            --color-secondary-light: #3b6b8e;
            --color-secondary-lighter: #dbeafe;
            --color-secondary-lightest: #eff6ff; */
            --color-secondary: #d97706;
            --color-secondary-dark: #b45309;
            --color-secondary-darker: #92400e;
            --color-secondary-light: #fbbf24;
            --color-secondary-lighter: #fef3c7;
            --color-secondary-lightest: #fde68a; 

            /* Neutral Colors */
            --color-dark: #1a1a1a;
            --color-dark-light: #2d2d2d;
            --color-gray: #4a5568;
            --color-gray-light: #6b7280;
            --color-gray-lighter: #9ca3af;
            --color-gray-lightest: #d1d5db;
            --color-gray-bg: #f9fafb;
            --color-gray-bg-light: #f3f4f6;
            --color-white: #ffffff;
            --color-black: #0f0f0f;

            /* Border Colors */
            --color-border-primary: #bfdbfe;
            --color-border-light: rgba(255, 255, 255, 0.1);

            /* Background Colors */
            --bg-gradient-hero: linear-gradient(180deg, #ffffff 0%, #fef3c7 100%);
            --bg-gradient-secondary: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
            --bg-gradient-primary: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
            --bg-gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
            --bg-white-transparent: rgba(255, 255, 255, 0.98);
            --bg-white-overlay: rgba(255, 255, 255, 0.05);

            /* Spacing */
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 2.5rem;
            --spacing-2xl: 3rem;
            --spacing-3xl: 4rem;
            --spacing-4xl: 6rem;

            /* Font Sizes */
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.85rem;
            --font-size-base: 1rem;
            --font-size-md: 1.05rem;
            --font-size-lg: 1.1rem;
            --font-size-xl: 1.15rem;
            --font-size-2xl: 1.25rem;
            --font-size-3xl: 1.5rem;
            --font-size-4xl: 1.75rem;
            --font-size-5xl: 2.5rem;
            --font-size-6xl: 3rem;
            --font-size-7xl: 3.5rem;

            /* Border Radius */
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-full: 20px;

            /* Transitions */
            --transition-fast: 0.3s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

            /* Shadows */
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1);
            /* --shadow-primary: 0 4px 6px rgba(217, 119, 6, 0.15);
            --shadow-primary-hover: 0 12px 28px rgba(217, 119, 6, 0.45); */
            --shadow-primary: 0 4px 6px rgba(65, 127, 170, 0.15);
            --shadow-primary-hover: 0 12px 28px rgba(59, 107, 142, 0.45);
            --shadow-secondary: 0 4px 6px rgba(65, 127, 170, 0.15);
            --shadow-secondary-hover: 0 12px 28px rgba(59, 107, 142, 0.45);

            /* Container */
            --container-max-width: 1200px;
            --container-padding: 0 3rem;

            /* Z-index */
            --z-navbar: 1000;
            --z-burger: 1001;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: var(--color-dark);
            overflow-x: hidden;
        }

        /* Navbar */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            /* background: var(--bg-white-transparent); */
            backdrop-filter: blur(20px);
            padding: 0.8rem 0;
            z-index: var(--z-navbar);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-fast);
            background: var(--bg-gradient-dark);
        }

        .nav-container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: var(--container-padding);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: var(--font-size-3xl);
            font-weight: 700;
            color: var(--color-dark);
            letter-spacing: -0.5px;
        }

        .logo span {
            color: var(--color-primary);
        }

        .nav-links {
            display: flex;
            gap: var(--spacing-2xl);
            list-style: none;
        }

        .nav-links a {
            /* color: var(--color-gray); */
            color: var(--color-white);
            text-decoration: none;
            font-weight: 600;
            font-size: var(--font-size-md);
            transition: color var(--transition-fast);
            letter-spacing: 0.3px;
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--color-primary);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
        }

        .burger-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            z-index: var(--z-burger);
        }

        .burger-menu span {
            width: 25px;
            height: 3px;
            background: var(--color-white);
            transition: all var(--transition-fast);
            border-radius: 2px;
        }

        .burger-menu.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .burger-menu.active span:nth-child(2) {
            opacity: 0;
        }

        .burger-menu.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        /* Hero Section */
        .hero-main {
            min-height: 100vh;
            /* background-image: url('./assets/img/product.png');
            background-size: 100vw 100vh; */
            background-image: url('./assets/img/best_autonomous_water_cleaning_machine_uae.jpg');
            background-size: auto 100vh;
            background-position: center;
            background-repeat: no-repeat;
            background-attachment: fixed;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding-top: 120px;
            padding-bottom: var(--spacing-lg);
        }

        /* .hero-main::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(0, 0, 0, 0.25) 100%);
            z-index: 1;
        } */

         .hero-main-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 2;
            /* background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.25)); */
            background: radial-gradient(circle,
            rgba(46, 45, 45, 0.547) 0%,
            rgba(32, 31, 31, 0.562) 70%
            );
        }

        /* .hero-main-container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: var(--container-padding);
            display: flex;
            align-items: center;
            justify-content: flex-start;
            position: relative;
            z-index: 3;
        } */

        .hero-main-content {
            /* max-width: 900px;
            padding: var(--spacing-2xl) var(--spacing-xl); */
            max-width: 1200px;
            padding: var(--spacing-sm) var(--spacing-xl);
            z-index: 3;
        }
        
        .hero-main-content h1 {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            line-height: 1.2;
            margin-bottom: var(--spacing-lg);
            color: var(--color-white);
            font-weight: 800;
            letter-spacing: -0.5px;
            text-align: center;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9), 
                         0 4px 12px rgba(0, 0, 0, 0.6);
        }

        .hero-main-content .highlight {
            color: #71b4e4;
            font-weight: 800;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9), 
                         0 4px 12px rgba(0, 0, 0, 0.6),
                         0 0 25px rgba(36, 165, 251, 0.318);
        }

        .hero-main-content p {
            font-size: clamp(1rem, 1.8vw, 1.15rem);
            color: rgba(255, 255, 255, 0.95);
            margin-bottom: var(--spacing-2xl);
            line-height: 1.75;
            font-weight: 400;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8),
                         0 2px 6px rgba(0, 0, 0, 0.5);
            /* letter-spacing: 0.2px; */
            text-align: center!important;
        }

        /* .btn-main-primary {
            background: var(--color-primary);
            color: var(--color-white);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5), 0 2px 6px rgba(6, 140, 217, 0.4);
            border: 2px solid var(--color-primary)!important;
        }

        .btn-main-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-3px) scale(1.05);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5), 0 8px 16px rgba(6, 140, 217, 0.4);
        } */

        .btn-main-primary {
            background: rgba(0, 0, 0, 0.3);
            color: var(--color-white);
            border: 2px solid var(--color-white)!important;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(8px);
        }

        .btn-main-primary:hover {
            background: var(--color-primary);
            color: var(--color-white);
            transform: translateY(-3px) scale(1.05);
            /* box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5), 0 8px 16px rgba(6, 140, 217, 0.6); */
        }

        .btn-footer-primary {
            background: rgba(0, 0, 0, 0.3);
            color: var(--color-white);
            border: 2px solid var(--color-white)!important;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(8px);
        }

        .btn-footer-primary:hover {
            background: var(--color-primary);
            color: var(--color-white);
            transform: translateY(-3px) scale(1.05);
            /* box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5), 0 8px 16px rgba(6, 140, 217, 0.6); */
        }

        .hero {
            min-height: 100vh;
            background: var(--bg-gradient-hero);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding-top: 120px;
            padding-bottom: var(--spacing-lg);
        }
        
        .hero-secondary {
            min-height: 100vh;
            background: var(--bg-gradient-hero-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding-top: 120px;
            padding-bottom: var(--spacing-lg);
        }
        

        .hero-container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: var(--container-padding);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-3xl);
            align-items: center;
        }

        .hero-content h1 {
            font-size: var(--font-size-7xl);
            line-height: 1.15;
            margin-bottom: var(--spacing-md);
            color: var(--color-dark);
            font-weight: 700;
            letter-spacing: -1px;
            text-align: center;
        }

        .hero-content .highlight {
            color: var(--color-primary);
        }

        .hero-content .highlight-secondary {
            color: var(--color-secondary);
        }


        .hero-content p {
            font-size: var(--font-size-xl);
            color: var(--color-gray);
            margin-bottom: var(--spacing-xl);
            line-height: 1.7;
            text-align: center;
        }

        .hero-image {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15rem;
            opacity: 0.9;
        }

        .cta-buttons {
            display: flex;
            justify-content: space-between;
            gap: var(--spacing-sm);
        }

        .btn {
            padding: var(--spacing-sm) var(--spacing-lg);
            border: none;
            border-radius: var(--radius-md);
            font-size: var(--font-size-base);
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-smooth);
            text-decoration: none;
            display: inline-block;
            letter-spacing: 0.3px;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin-right: var(--spacing-2xl);
        }

        .btn:active {
            transform: scale(0.95);
        }

        .btn-primary {
            background: var(--color-primary-dark);
            color: var(--color-white);
            box-shadow: var(--shadow-primary);
            border: 2px solid var(--color-primary-dark);
        }

        .btn-primary:hover {
            background: var(--color-primary);
            transform: translateY(-3px) scale(1.05);
            border: 2px solid var(--color-primary);
            /* box-shadow: var(--shadow-primary-hover); */
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:hover {
            background: var(--color-primary);
            color: var(--color-white);
            transform: translateY(-3px) scale(1.05);
            /* box-shadow: 0 10px 24px rgba(217, 119, 6, 0.35); */
        }

        .btn-tertiary {
            background: var(--color-secondary);
            color: var(--color-white);
            border: 2px solid var(--color-secondary);
            box-shadow: var(--shadow-secondary);
        }

        .btn-tertiary:hover {
            background: var(--color-secondary-light);
            transform: translateY(-3px) scale(1.05);
            border: 2px solid var(--color-secondary-light);
            /* box-shadow: var(--shadow-secondary-hover); */
        }

        .btn-quaternary {
            background: transparent;
            color: var(--color-secondary-light);
            border: 2px solid var(--color-secondary-light);
            box-shadow: var(--shadow-sm);
        }

        .btn-quaternary:hover {
            /* background: var(--color-secondary); */
            background: var(--color-secondary-light);
            color: var(--color-white);
            transform: translateY(-3px) scale(1.05);
            /* box-shadow: 0 10px 24px rgba(6, 161, 217, 0.35); */
        }

        /* Stats Section */
        .stats {
            background: var(--color-white);
            padding: var(--spacing-3xl) 0;
        }

        /* Stats Section */
        .stats-container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: var(--container-padding);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-2xl);
        }

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

        .stat-number {
            font-size: var(--font-size-6xl);
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }

        .stat-label {
            color: var(--color-gray);
            font-size: var(--font-size-md);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Products Section */
        .products {
            padding: var(--spacing-4xl) 0;
            background: var(--color-gray-bg);
        }

        .container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: var(--container-padding);
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-3xl);
            margin-top: var(--spacing-lg);
        }

        .section-label {
            color: var(--color-primary);
            font-size: var(--font-size-md);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1.5px;
        }

        .section-header h2 {
            font-size: var(--font-size-5xl);
            color: var(--color-dark);
            font-weight: 700;
            letter-spacing: -0.5px;
            text-align: center;
        }

        .section-header p {
            font-size: var(--font-size-lg);
            color: var(--color-gray-light);
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-2xl);
        }

        .product-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-fast);
            display:flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .product-image {
            height: 280px;
            background: var(--bg-gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 6rem;
            position: relative;
        }

        .product-badge {
            position: absolute;
            top: var(--spacing-md);
            right: var(--spacing-md);
            background: var(--color-white);
            color: var(--color-primary);
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--radius-full);
            font-size: var(--font-size-xs);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .product-badge-secondary {
            position: absolute;
            top: var(--spacing-md);
            right: var(--spacing-md);
            background: var(--color-secondary-lightest);
            color: var(--color-secondary-darker); 
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border: 1px solid #bfdbfe;
        }


        .product-content {
            padding: var(--spacing-xl);
        }

        .product-content h3 {
            font-size: var(--font-size-4xl);
            margin-bottom: var(--spacing-sm);
            color: var(--color-dark);
            font-weight: 700;
        }

        .product-content p {
            color: var(--color-gray-light);
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-lg);
        }

        .feature-tag {
            background: var(--color-primary-lighter);
            color: var(--color-primary-darker);
            padding: 0.6rem var(--spacing-sm);
            border-radius: var(--radius-sm);
            font-size: var(--font-size-md);
            font-weight: 600;
            text-align: center;
        }

        .feature-tag-secondary {
            background: var(--color-secondary-lighter);
            color: var(--color-secondary-dark);
            padding: 0.6rem var(--spacing-sm);
            border-radius: var(--radius-sm);
            font-size: var(--font-size-md);
            font-weight: 600;
            text-align: center;
            /* border: 1px solid var(--color-border-primary); */
        }

        /* Specifications */
        .specs {
            padding: var(--spacing-4xl) 0;
            background: var(--color-white);
        }

        .specs-tabs {
            display: flex;
            justify-content: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-2xl);
        }

        .tab-btn {
            padding: var(--spacing-sm) var(--spacing-lg);
            background: var(--color-gray-bg);
            border: none;
            border-radius: var(--radius-md);
            font-size: var(--font-size-base);
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-smooth);
            color: var(--color-gray);
            box-shadow: var(--shadow-sm);
        }

        .tab-btn:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: var(--shadow-lg);
            background: var(--color-gray-bg-light);
        }

        .tab-btn.active {
            background: var(--color-primary);
            color: var(--color-white);
            /* box-shadow: 0 4px 8px rgba(217, 119, 6, 0.3); */
        }

        .tab-btn.active:hover {
            transform: translateY(-2px) scale(1.03);
            /* box-shadow: 0 8px 16px rgba(217, 119, 6, 0.4); */
        }

        .tab-btn-secondary {
            padding: var(--spacing-sm) var(--spacing-lg);
            background: var(--color-gray-bg);
            border: none;
            border-radius: var(--radius-md);
            font-size: var(--font-size-base);
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-smooth);
            color: var(--color-gray);
            box-shadow: var(--shadow-sm);
        }

        .tab-btn-secondary:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: var(--shadow-lg);
            background: var(--color-gray-bg-light);
        }

        .tab-btn-secondary.active {
            background: var(--color-secondary-light);
            color: var(--color-white);
            /* box-shadow: 0 4px 8px rgba(59, 107, 142, 0.3); */
        }

        .tab-btn-secondary.active:hover {
            transform: translateY(-2px) scale(1.03);
            /* box-shadow: 0 8px 16px rgba(59, 107, 142, 0.4); */
        }


        .specs-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .spec-card {
            background: var(--color-gray-bg);
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--color-primary);
        }

        .spec-card-secondary {
            background: var(--color-gray-bg);
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--color-secondary-light);
        }

        /* Specifications */
        .specs {
            padding: var(--spacing-4xl) 0;
            background: var(--color-white);
        }

        .specs-section {
            padding: var(--spacing-4xl) 0;
            background: var(--color-white);
        }

        .specs-tabs {
            display: flex;
            justify-content: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-2xl);
        }

        .tab-btn {
            padding: var(--spacing-sm) var(--spacing-lg);
            background: var(--color-gray-bg);
            border: none;
            border-radius: var(--radius-md);
            font-size: var(--font-size-base);
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-smooth);
            color: var(--color-gray);
            box-shadow: var(--shadow-sm);
        }

        .tab-btn:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: var(--shadow-lg);
            background: var(--color-gray-bg-light);
        }

        .tab-btn.active {
            background: var(--color-primary);
            color: var(--color-white);
            box-shadow: 0 4px 8px rgba(59, 107, 142, 0.3);
        }

        .tab-btn.active:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: 0 8px 16px rgba(59, 107, 142, 0.4);
        }

        .tab-btn-secondary {
            padding: var(--spacing-sm) var(--spacing-lg);
            background: var(--color-gray-bg);
            border: none;
            border-radius: var(--radius-md);
            font-size: var(--font-size-base);
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-smooth);
            color: var(--color-gray);
            box-shadow: var(--shadow-sm);
        }

        .tab-btn-secondary:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: var(--shadow-lg);
            background: var(--color-gray-bg-light);
        }

        .tab-btn-secondary.active {
            background: var(--color-secondary-light);
            color: var(--color-white);
            box-shadow: 0 4px 8px rgba(59, 107, 142, 0.3);
        }

        .tab-btn-secondary.active:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: 0 8px 16px rgba(59, 107, 142, 0.4);
        }


        .specs-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .spec-card {
            background: var(--color-gray-bg);
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--color-primary);
        }

        .specs-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-2xl);
            margin-top: var(--spacing-2xl);
        }

        .spec-group {
            background: var(--color-gray-bg);
            padding: var(--spacing-xl);
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--color-primary);
        }

        .spec-group-secondary {
            background: var(--color-gray-bg);
            padding: var(--spacing-xl);
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--color-secondary-light);
        }

        .spec-group h3 {
            font-size: var(--font-size-3xl);
            margin-bottom: var(--spacing-md);
            color: var(--color-dark);
        }

        .spec-item {
            display: flex;
            justify-content: space-between;
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid var(--color-border-primary);
        }

        .spec-item:last-child {
            border-bottom: none;
        }

        .spec-label {
            font-weight: 600;
            color: var(--color-gray);
        }

        .spec-value {
            color: var(--color-dark);
            text-align: right;
        }

        /* Product detail pages - Overview section */
        .overview {
            padding: var(--spacing-1xl) 0;
            background: var(--color-white);
        }

        .section-title {
            font-size: var(--font-size-5xl);
            margin-bottom: var(--spacing-lg);
            color: var(--color-dark);
            font-weight: 700;
            text-align: center;
        }

        .section-subtitle {
            font-size: var(--font-size-lg);
            color: var(--color-gray-light);
            margin-bottom: var(--spacing-2xl);
            line-height: 1.8;
        }

        /* Feature Cards for product detail pages */
        .features-section {
            padding: var(--spacing-4xl) 0;
            background: var(--color-gray-bg);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-xl);
            margin-top: var(--spacing-2xl);
        }

        .feature-card {
            background: var(--color-white);
            padding: var(--spacing-xl);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }

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

        .feature-icon {
            font-size: 3rem;
            margin-bottom: var(--spacing-sm);
        }

        .feature-card h3 {
            font-size: var(--font-size-2xl);
            margin-bottom: var(--spacing-sm);
            color: var(--color-dark);
        }

        .feature-card p {
            color: var(--color-gray-light);
            line-height: 1.7;
        }

        /* Product detail pages - Customization section */
        .customization-section {
            padding: var(--spacing-4xl) 0;
            background: var(--color-gray-bg);
        }

        .customization-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-xl);
            margin-top: var(--spacing-2xl);
        }

        .custom-card {
            background: var(--color-white);
            padding: var(--spacing-xl);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }

        .custom-card h4 {
            font-size: var(--font-size-2xl);
            margin-bottom: var(--spacing-sm);
            color: var(--color-dark);
        }

        .custom-card p {
            color: var(--color-gray-light);
            line-height: 1.7;
        }

        /* Note Box */
        .note-box {
            background: var(--color-secondary-lighter);
            border-left: 4px solid var(--color-secondary);
            padding: var(--spacing-md);
            border-radius: var(--radius-sm);
            margin: var(--spacing-lg) 0;
        }

        .note-box p {
            color: var(--color-secondary-darker);
            font-size: var(--font-size-base);
        }

        /* CTA Section */
        .cta-section {
            padding: var(--spacing-4xl) 0;
            background: var(--bg-gradient-dark);
            color: var(--color-white);
            text-align: center;
        }

        .cta-section h2 {
            font-size: var(--font-size-5xl);
            margin-bottom: var(--spacing-md);
        }

        .cta-section p {
            font-size: var(--font-size-xl);
            margin-bottom: var(--spacing-lg);
            color: var(--color-gray-lightest);
        }

        /* Gallery Section */
        .gallery {
            background: var(--color-gray-bg);
            padding: var(--spacing-4xl) 0;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .gallery-container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: var(--container-padding);
        }

        .product-demo-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-xl);
            max-width: 1200px;
            margin: 0 auto;
        }

        .product-demo-item {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
            background: var(--color-white);
        }

        .product-demo-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
        }

        .product-demo-item video,
        .product-demo-item img {
            width: 100%;
            height: 350px;
            object-fit: cover;
            display: block;
        }

        .product-demo-text {
            grid-row: 1 / 3;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            padding: var(--spacing-2xl);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
            color: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            text-align: center;
        }

        .product-demo-text h3 {
            font-size: var(--font-size-4xl);
            font-weight: 700;
            margin-bottom: var(--spacing-lg);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .product-demo-text p {
            font-size: var(--font-size-lg);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            opacity: 0.95;
        }

        .product-demo-text ul {
            list-style: none;
            margin-top: var(--spacing-lg);
        }

        .product-demo-text li {
            font-size: var(--font-size-md);
            margin-bottom: var(--spacing-sm);
            padding-left: var(--spacing-lg);
            position: relative;
        }

        .product-demo-text li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--color-primary-lighter);
            font-weight: 700;
        }

        /* Advantages */
        .advantages {
            padding: var(--spacing-4xl) 0;
            background: var(--color-gray-bg);
        }

        .advantages-section {
            padding: var(--spacing-4xl) 0;
            background: var(--color-gray-bg);
        }

        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-xl);
        }

        .advantage-card {
            background: var(--color-white);
            padding: var(--spacing-xl) var(--spacing-md);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .advantage-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .advantage-item {
            background: var(--color-white);
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            display: flex;
            gap: var(--spacing-md);
        }

        .advantage-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            margin-bottom: var(--spacing-md);
            flex-shrink: 0;
        }

        .advantage-card h4 {
            font-size: var(--font-size-2xl);
            margin-bottom: var(--spacing-sm);
            color: var(--color-dark);
            font-weight: 600;
        }

        .advantage-card p {
            color: var(--color-gray-light);
            line-height: 1.7;
        }

        .advantage-content h4 {
            font-size: var(--font-size-xl);
            margin-bottom: var(--spacing-xs);
            color: var(--color-dark);
        }

        .advantage-content p {
            color: var(--color-gray-light);
            line-height: 1.7;
        }

        /* Contact Section */
        .contact {
            padding: var(--spacing-4xl) 0;
            background: var(--bg-gradient-dark);
            color: var(--color-white);
        }

        .contact-container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: var(--container-padding);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-3xl);
            align-items: center;
        }

        .contact-content h2 {
            font-size: var(--font-size-5xl);
            margin-bottom: var(--spacing-md);
            font-weight: 700;
        }

        .contact-content p {
            font-size: var(--font-size-lg);
            color: var(--color-gray-lightest);
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }

        .contact-info {
            background: var(--bg-white-overlay);
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
        }

        .contact-item {
            margin-bottom: var(--spacing-md);
        }

        .contact-item:last-child {
            margin-bottom: 0;
        }

        .contact-label {
            font-size: var(--font-size-xl);
            color: var(--color-gray-lighter);
            margin-bottom: var(--spacing-xs);
            /* text-transform: uppercase; */
            letter-spacing: 1px;
        }

        .contact-value {
            font-size: var(--font-size-lg);
            color: var(--color-white);
        }

        .contact-value a {
            color: var(--color-white);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .contact-value a:hover {
            color: var(--color-primary);
        }

        /* Footer */
        .footer {
            background: var(--color-black);
            color: var(--color-gray-lighter);
            padding: var(--spacing-lg) 0;
            text-align: center;
        }

        .footer p {
            font-size: 0.9rem;
        }

        /* Mobile Responsive */
        @media (max-width: 1024px) {
            .nav-container {
                padding: 0 2rem;
            }

            .hero {
                padding-top: 30px;
            }

            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
                padding: 0 2rem;
                gap: 2rem;
                margin-top: 3rem;
            }

            .hero-content h1 {
                font-size: 2.8rem;
                margin-top: 3rem;
            }

            .hero-content p {
                font-size: 1.05rem;
            }

            .hero-image {
                font-size: 10rem;
            }

            .hero-image img {
                max-width: 80%;
                height: auto;
            }

            .cta-buttons {
                justify-content: center;
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                max-width: 300px;
            }

            .product-content .btn {
                display: block;
                margin-left: auto;
                margin-right: auto;
            }

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

            .specs-content {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .customization-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .contact-container {
                grid-template-columns: 1fr;
            }

            .product-demo-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }

            .product-demo-text {
                grid-column: 1 / -1;
                grid-row: auto;
            }

            .product-demo-item video,
            .product-demo-item img {
                height: 400px;
            }
        }

        @media (max-width: 768px) {
            .nav-container {
                padding: 0 1.5rem;
            }

            .burger-menu {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 70%;
                height: 100vh;
                background: var(--bg-gradient-dark);
                backdrop-filter: blur(20px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 2rem;
                transition: right 0.3s ease;
                box-shadow: -2px 0 10px rgba(0,0,0,0.1);
                z-index: var(--z-navbar);
            }

            .nav-links.active {
                right: 0;
            }

            .nav-links a {
                font-size: 1.2rem;
                color: var(--color-white);
            }
            
            .nav-links a:hover {
                color: var(--color-primary);
            }

            .logo {
                font-size: 1.2rem;
            }

            .hero {
                padding-top: 80px;
                min-height: auto;
            }

            .surface-skimmer-hero {
                margin-top: 3rem;
            }

            .under-water-hero {
                margin-top: 3rem;
            }

            .hero-container {
                padding: 0 1.5rem;
                gap: 1.5rem;
            }

            .hero-content h1 {
                font-size: 3rem;
                line-height: 1.2;
                margin-bottom: 1rem;
                margin-top: 5rem;
            }

            .hero-content p {
                font-size: 0.95rem;
                margin-bottom: 1.5rem;
                line-height: 1.6;
            }

            .hero-image {
                font-size: 8rem;
            }

            .hero-image img {
                max-width: 100%;
                height: auto;
            }

            .cta-buttons {
                gap: 0.75rem;
            }

            .btn {
                padding: 0.875rem 1.5rem;
                font-size: 0.95rem;
                margin-right: 0;
            }

            .stats-container {
                grid-template-columns: repeat(2, 1fr);
                gap: 2rem;
            }

            .specs-content {
                grid-template-columns: 1fr;
            }

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

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

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

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

            .product-demo-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .product-demo-text {
                grid-column: 1;
                grid-row: auto;
                padding: var(--spacing-lg);
            }

            .product-demo-text h3 {
                font-size: var(--font-size-3xl);
            }

            .product-demo-text p {
                font-size: var(--font-size-base);
            }

            .product-demo-item video,
            .product-demo-item img {
                height: 300px;
            }
        }

        @media (max-width: 480px) {
            .nav-container {
                padding: 0 1rem;
            }

            .logo img {
                height: 8vh !important;
            }

            .hero {
                padding-top: 70px;
            }

            .hero-container {
                padding: 0 1rem;
                gap: 1rem;
            }

            .hero-main-content {
                padding: var(--spacing-2xl) var(--spacing-xs);
            }

            .hero-content h1 {
                font-size: 2.5rem;
            }

            .hero-content p {
                font-size: 0.9rem;
            }

            .hero-image {
                font-size: 6rem;
            }

            .btn {
                padding: 0.75rem 1.25rem;
                font-size: 0.9rem;
                margin-right: 0;
            }

            .stat-number {
                font-size: 2.5rem;
            }

            .stat-label {
                font-size: 0.9rem;
            }

            .product-image {
                height: 250px;
            }

            .product-image img {
                max-width: 100%;
                height: auto;
                object-fit: contain;
            }

            .product-demo-grid {
                gap: var(--spacing-sm);
            }

            .product-demo-text {
                padding: var(--spacing-md);
            }

            .product-demo-text h3 {
                font-size: var(--font-size-2xl);
                margin-bottom: var(--spacing-sm);
            }

            .product-demo-text p {
                font-size: var(--font-size-sm);
                margin-bottom: var(--spacing-sm);
            }

            .product-demo-text li {
                font-size: var(--font-size-sm);
                margin-bottom: var(--spacing-xs);
            }

            .product-demo-item video,
            .product-demo-item img {
                height: 300px;
            }
        }