:root {
            --dark-bg: #0f172a;
            --dark-card: #1e293b;
            --accent-primary: #6366f1;
            --accent-secondary: #8b5cf6;
            --accent-highlight: #06b6d4;
            --text-light: #f8fafc;
            --text-gray: #94a3b8;
            --border: #334155;
            --success: #10b981;
            --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }

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

        body {
            background: var(--dark-bg);
            color: var(--text-light);
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Navigation */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 15px 0;
            background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-light);
            text-decoration: none;
            display: flex;
            align-items: center;
        }

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

        .logo img {
            height: 40px;
            margin-right: 10px;
        }

        .auth-buttons {
            display: flex;
            gap: 15px;
        }

        .auth-btn {
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            font-size: 0.95rem;
        }

        .login-btn {
            background: transparent;
            border: 1px solid var(--accent-highlight);
            color: var(--accent-highlight);
        }

        .register-btn {
            background: var(--accent-primary);
            color: white;
            border: none;
        }

        .auth-btn:hover {
            transform: translateY(-2px);
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            position: relative;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 120px 0 80px;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.1) 0%, rgba(15, 23, 42, 0) 40%),
                        radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.1) 0%, rgba(15, 23, 42, 0) 40%);
            z-index: -1;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
            color: var(--text-light);
        }

        .hero-highlight {
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-highlight));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            margin-bottom: 40px;
            color: var(--text-gray);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            font-weight: 400;
        }

        .hero-cta {
            display: inline-block;
            background: var(--accent-primary);
            color: white;
            padding: 16px 40px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 6px rgba(99, 102, 241, 0.3);
            margin-top: 20px;
            border: none;
            cursor: pointer;
        }

        .hero-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 15px rgba(99, 102, 241, 0.4);
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
        }

        /* Features Section */
        .features {
            padding: 100px 0;
            position: relative;
            background: rgba(15, 23, 42, 0.5);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .section-header p {
            font-size: 1.15rem;
            color: var(--text-gray);
            max-width: 600px;
            margin: 30px auto 0;
            line-height: 1.7;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .feature-card {
            background: var(--dark-card);
            padding: 40px 30px;
            border-radius: 12px;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .feature-card:hover {
            transform: translateY(-5px);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .feature-icon {
            width: 70px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            background: rgba(99, 102, 241, 0.1);
            border-radius: 50%;
            color: var(--accent-primary);
            font-size: 1.8rem;
        }

        .feature-card h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--text-light);
        }

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

        /* Trust Section */
        .trust-section {
            padding: 80px 0;
            background: var(--dark-bg);
        }

        .trust-badges {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 40px;
        }

        .trust-item {
            text-align: center;
            max-width: 200px;
        }

        .trust-icon {
            font-size: 2.5rem;
            color: var(--accent-highlight);
            margin-bottom: 15px;
        }

        .trust-item h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--text-light);
        }

        .trust-item p {
            color: var(--text-gray);
            font-size: 0.95rem;
        }

        /* How it works Section */
        .how-it-works {
            padding: 100px 0;
            background: var(--dark-bg);
            position: relative;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 40px;
            margin-top: 60px;
        }

        .step-card {
            text-align: center;
            position: relative;
            padding: 0 20px;
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: var(--dark-card);
            color: var(--accent-primary);
            border-radius: 50%;
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 25px;
            border: 2px solid var(--accent-primary);
        }

        .step-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--text-light);
        }

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

        /* Testimonials Section */
        .testimonials {
            padding: 100px 0;
            background: rgba(15, 23, 42, 0.5);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 60px;
        }

        .testimonial-card {
            background: var(--dark-card);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .testimonial-content {
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }

        .testimonial-content p {
            color: var(--text-gray);
            font-style: italic;
            line-height: 1.7;
        }

        .testimonial-content::before {
            content: '"';
            font-size: 4rem;
            position: absolute;
            top: -20px;
            left: -10px;
            color: rgba(99, 102, 241, 0.2);
        }

        .testimonial-author {
            display: flex;
            align-items: center;
        }

        .author-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--accent-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            color: white;
            font-weight: bold;
        }

        .author-info h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        .author-info p {
            color: var(--text-gray);
            font-size: 0.9rem;
        }

        /* CTA Section */
        .cta-section {
            padding: 120px 0;
            background: linear-gradient(135deg, var(--dark-card), #0f172a);
            text-align: center;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.1) 0%, transparent 40%);
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .cta-section p {
            font-size: 1.15rem;
            color: var(--text-gray);
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--accent-primary);
            color: white;
            padding: 14px 32px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1rem;
            box-shadow: var(--shadow);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 15px rgba(99, 102, 241, 0.4);
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-highlight);
            padding: 14px 32px;
            border: 1px solid var(--accent-highlight);
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1rem;
        }

        .btn-secondary:hover {
            background: rgba(6, 182, 212, 0.1);
        }

        /* Footer */
        footer {
            background: var(--dark-card);
            padding: 80px 0 30px;
            border-top: 1px solid var(--border);
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-section h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-light);
            position: relative;
            padding-bottom: 10px;
        }

        .footer-section h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--accent-primary);
        }

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

        .footer-section li {
            margin-bottom: 12px;
        }

        .footer-section a {
            color: var(--text-gray);
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 0.95rem;
        }

        .footer-section a:hover {
            color: var(--accent-highlight);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border);
            color: var(--text-gray);
            font-size: 0.9rem;
        }

        /* Auth Modal */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 2000;
            backdrop-filter: blur(10px);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .auth-modal {
            background: var(--dark-card);
            border-radius: 12px;
            padding: 40px;
            width: 100%;
            max-width: 450px;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
            position: relative;
            border: 1px solid var(--border);
            transform: translateY(20px);
            transition: transform 0.4s ease;
        }

        .modal-overlay.active .auth-modal {
            transform: translateY(0);
        }

        .close-modal {
            position: absolute;
            top: 20px;
            right: 20px;
            background: transparent;
            border: none;
            color: var(--text-gray);
            font-size: 1.5rem;
            cursor: pointer;
            transition: color 0.3s ease;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .close-modal:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--accent-highlight);
        }

        .auth-tabs {
            display: flex;
            margin-top: 40px;
            margin-bottom: 30px;
            background: rgba(30, 41, 59, 0.5);
            border-radius: 8px;
            padding: 5px;
        }

        .auth-tab {
            flex: 1;
            padding: 12px;
            background: transparent;
            border: none;
            color: var(--text-gray);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            border-radius: 6px;
            font-size: 0.95rem;
        }

        .auth-tab.active {
            color: var(--text-light);
            background: var(--accent-primary);
        }

        .auth-form {
            display: none;
        }

        .auth-form.active {
            display: block;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--text-light);
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 14px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text-light);
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .submit-btn {
            width: 100%;
            background: var(--accent-primary);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 10px;
            box-shadow: var(--shadow);
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
        }

        /* Animation on scroll */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .section-header h2 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: 100px 0 60px;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .hero-subtitle {
                font-size: 1.1rem;
            }
            
            .features-grid,
            .steps-grid,
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .btn-primary, .btn-secondary {
                width: 100%;
                max-width: 300px;
            }
            
            .auth-modal {
                padding: 30px 20px;
            }
        }

        @media (max-width: 480px) {
            .navbar {
                padding: 12px 0;
            }
            
            .logo {
                font-size: 1.4rem;
            }
            
            .auth-btn {
                padding: 8px 15px;
                font-size: 0.85rem;
            }
            
            .hero h1 {
                font-size: 1.8rem;
            }
            
            .trust-badges {
                flex-direction: column;
                align-items: center;
            }
        }

        /* Horizontal Side-Scrolling Showcase Gallery Slider */
        .gallery-section {
            padding: 60px 0 100px;
            background: var(--dark-bg);
            position: relative;
        }

        .gallery-wrapper {
            position: relative;
            margin-top: 30px;
        }

        .gallery-slider {
            display: flex;
            gap: 30px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            scroll-behavior: smooth;
            padding: 20px 10px 40px;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--accent-primary) var(--dark-card);
        }

        .gallery-slider::-webkit-scrollbar {
            height: 8px;
        }

        .gallery-slider::-webkit-scrollbar-track {
            background: var(--dark-card);
            border-radius: 10px;
        }

        .gallery-slider::-webkit-scrollbar-thumb {
            background: var(--accent-primary);
            border-radius: 10px;
        }

        .product-card-preview {
            flex: 0 0 380px;
            scroll-snap-align: start;
            background: rgba(30, 41, 59, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 18px;
            overflow: hidden;
            backdrop-filter: blur(16px);
            transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
        }

        .product-card-preview:hover {
            transform: translateY(-8px);
            border-color: var(--accent-highlight);
            box-shadow: 0 25px 50px rgba(6, 182, 212, 0.25);
        }

        .product-card-preview img {
            width: 100%;
            height: 250px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--border);
        }

        .product-card-info {
            padding: 24px;
        }

        .product-card-badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: rgba(99, 102, 241, 0.2);
            color: var(--accent-highlight);
            border: 1px solid rgba(6, 182, 212, 0.4);
            margin-bottom: 12px;
        }

        .product-card-info h4 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .product-card-info p {
            font-size: 0.95rem;
            color: var(--text-gray);
            line-height: 1.6;
        }

        .gallery-controls {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            margin-top: 25px;
        }

        .gallery-nav-btn {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--dark-card);
            border: 1px solid var(--accent-highlight);
            color: var(--accent-highlight);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

        .gallery-nav-btn:hover {
            background: var(--accent-primary);
            color: white;
            border-color: var(--accent-primary);
            transform: scale(1.1);
        }

        @media (max-width: 768px) {
            .product-card-preview {
                flex: 0 0 300px;
            }
            .product-card-preview img {
                height: 200px;
            }
        }