:root {
            --primary-color: rgb(169, 5, 5);
            --sombre-primary-color: rgb(121, 3, 3);
            --nexus-bg-dark: #121212;
            --nexus-bg-light: #1e1e1e;
            --nexus-text-light: #f1f1f1;
            --nexus-text-muted: #a0a0a0;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--nexus-bg-dark);
            color: var(--nexus-text-light);
            overflow-x: hidden;
        }
        .nexus-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Header */
        .nexus-header {
            padding: 20px 0;
            background: transparent;
            position: absolute;
            width: 100%;
            z-index: 10;
        }
        .nexus-header .nexus-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .nexus-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            text-decoration: none;
        }
        .nexus-logo span { color: var(--primary-color); }
        .nexus-cta-header {
            background-color: var(--primary-color);
            color: white;
            padding: 10px 20px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: background-color 0.3s;
            font-size: .5rem;
        }
        .nexus-cta-header:hover {
            background-color: var(--sombre-primary-color);
        }

        /* Hero Section */
        .nexus-hero {
            height: 100vh;
            background: linear-gradient(rgba(18, 18, 18, 0.8), rgba(18, 18, 18, 1)), url('https://images.unsplash.com/photo-1553649036-853123154475?q=80&w=2070&auto=format&fit=crop');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            text-align: center;
            position: relative;
        }
        .nexus-hero-content {
            padding-top: 80px;
        }
        .nexus-hero-content h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .nexus-hero-content h1 span { color: var(--primary-color); }
        .nexus-hero-content p {
            font-size: 1.2rem;
            color: var(--nexus-text-muted);
            max-width: 700px;
            margin: 0 auto 2rem auto;
        }
        .download-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 30px;
            margin-bottom: 180px;
            flex-wrap: wrap;
        }
        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background-color: #252525;
            color: white;
            padding: 15px 25px;
            border-radius: 8px;
            text-decoration: none;
            transition: background-color 0.3s, transform 0.2s;
        }
        .download-btn:hover {
            background-color: #333;
            transform: translateY(-3px);
        }
        .download-btn i { font-size: 1.8rem; }
        .btn-text span { display: block; text-align: left; }
        .btn-text .store-name { font-weight: 600; font-size: 1.1rem; }
        .btn-text .action { font-size: 0.8rem; }

        /* App Preview Section */
        .app-preview {
            margin-top: -150px;
            position: relative;
            z-index: 5;
            text-align: center;
        }
        .app-preview img {
            max-width: 80%;
            
        }

        /* Features Section */
        .nexus-section {
            padding: 100px 0;
        }
        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .section-subtitle {
            text-align: center;
            color: var(--nexus-text-muted);
            max-width: 600px;
            margin: 0 auto 50px auto;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }
        .feature-card {
            background-color: var(--nexus-bg-light);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid #333;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--nexus-text-muted);
        }

        /* Mobile View Section */
        .mobile-view-section {
            background-color: var(--nexus-bg-light);
        }
        .mobile-view-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 50px;
        }
        .mobile-view-text h2 {
            font-size: 2.2rem;
            margin-bottom: 20px;
        }
        .mobile-view-text p {
            color: var(--nexus-text-muted);
            margin-bottom: 20px;
        }
        .mobile-view-image {
            text-align: center;
        }
        .mobile-view-image img {
            max-width: 80%;
            height: auto;
        }

        /* Footer */
        .nexus-footer {
            padding: 50px 0;
            text-align: center;
            border-top: 1px solid #333;
        }
        .nexus-footer p {
            color: var(--nexus-text-muted);
        }
        .nexus-footer a {
            color: var(--primary-color);
            text-decoration: none;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .nexus-hero-content h1 { font-size: 2.5rem; }
            .mobile-view-content { grid-template-columns: 1fr; }
            .mobile-view-image { order: -1; margin-bottom: 40px; }
        }