/* --------------------------------------------------------------------------
           1. CORE VARIABLES & RESET
        -------------------------------------------------------------------------- */
        :root {
            /* Palette - Ultra Dark Premium */
            --bg-deep: #030304;
            --bg-surface: #0a0a0c;
            --bg-surface-2: #141416;
            --bg-surface-hover: #1c1c1f;
            
            --text-primary: #ffffff;
            --text-secondary: #9CA3AF;
            --text-tertiary: #6B7280;

            /* Branding */
            --brand-primary: #3b82f6; /* Electric Blue */
            --brand-glow: rgba(59, 130, 246, 0.5);
            --brand-gradient: linear-gradient(135deg, #60A5FA 0%, #3B82F6 100%);

            /* UI Elements */
            --border-light: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.15);
            --glass: rgba(10, 10, 12, 0.7);
            --glass-blur: blur(20px);
            
            /* Animation Curves */
            --ease-elastic: cubic-bezier(0.175, 0.885, 0.32, 1.275);
            --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        body {
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
            line-height: 1.6;
        }

        /* Noise Texture Overlay for Film Grain Effect */
        .noise-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 9999;
            opacity: 0.4;
        }

        a { text-decoration: none; color: inherit; transition: color 0.3s ease; }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }

        /* --------------------------------------------------------------------------
           2. UTILITIES & TYPOGRAPHY
        -------------------------------------------------------------------------- */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 2;
        }

        .gradient-text {
            background: linear-gradient(to right, #fff, #9CA3AF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .gradient-brand {
            background: linear-gradient(to right, #60A5FA, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        h1, h2, h3, h4 {
            font-family: 'Space Grotesk', sans-serif;
            color: var(--text-primary);
            letter-spacing: -0.03em;
        }

        /* --------------------------------------------------------------------------
           3. BACKGROUND ANIMATIONS (The "Sweet" Orbs)
        -------------------------------------------------------------------------- */
        .ambient-light {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            overflow: hidden;
            z-index: 0;
            pointer-events: none;
        }

        .orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.4;
            animation: orb-float 20s infinite alternate var(--ease-smooth);
        }

        .orb-1 {
            top: -10%;
            right: -5%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, #1e3a8a 0%, transparent 70%);
        }

        .orb-2 {
            bottom: -10%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, #312e81 0%, transparent 70%);
            animation-delay: -5s;
        }

        @keyframes orb-float {
            0% { transform: translate(0, 0) scale(1); }
            100% { transform: translate(-30px, 50px) scale(1.1); }
        }

        /* --------------------------------------------------------------------------
           4. NAVIGATION (Glassmorphism)
        -------------------------------------------------------------------------- */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            background: rgba(3, 3, 4, 0.6);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: all 0.3s ease;
        }

        .nav-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .brand-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.25rem;
            cursor: pointer;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            object-fit: cover;
            box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
            transition: transform 0.3s var(--ease-elastic);
        }

        .brand-wrapper:hover .brand-icon {
            transform: scale(1.1) rotate(5deg);
        }

        .nav-links {
            display: flex;
            gap: 40px;
            align-items: center;
        }

        .nav-link {
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0%;
            height: 1px;
            background: var(--brand-primary);
            transition: width 0.3s ease;
        }

        .nav-link:hover { color: var(--text-primary); }
        .nav-link:hover::after { width: 100%; }

        .btn-nav-download {
            background: var(--text-primary);
            color: var(--bg-deep);
            padding: 10px 24px;
            border-radius: 99px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: transform 0.2s var(--ease-smooth), box-shadow 0.2s;
        }

        .btn-nav-download:hover {
            transform: scale(1.05);
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
        }

        /* --------------------------------------------------------------------------
           5. HERO SECTION
        -------------------------------------------------------------------------- */
        .hero {
            padding-top: 180px;
            padding-bottom: 120px;
            text-align: center;
            perspective: 1000px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            border-radius: 100px;
            font-size: 0.8rem;
            color: var(--brand-primary);
            margin-bottom: 30px;
            animation: fadeDown 1s var(--ease-smooth);
        }

        .hero-badge span {
            width: 6px;
            height: 6px;
            background: var(--brand-primary);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--brand-primary);
            animation: pulse 2s infinite;
        }

        h1.hero-title {
            font-size: 5rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            opacity: 0;
            animation: slideUp 0.8s 0.2s forwards var(--ease-smooth);
        }

        p.hero-subtitle {
            font-size: 1.35rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 48px;
            opacity: 0;
            animation: slideUp 0.8s 0.4s forwards var(--ease-smooth);
        }

        .cta-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            opacity: 0;
            animation: slideUp 0.8s 0.6s forwards var(--ease-smooth);
        }

        .btn-primary {
            position: relative;
            background: var(--brand-primary);
            color: white;
            padding: 18px 48px;
            border-radius: 16px;
            font-size: 1.1rem;
            font-weight: 600;
            overflow: hidden;
            border: none;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 10px 40px -10px var(--brand-primary);
        }

        /* Shine effect on button */
        .btn-primary::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-primary:hover::before { left: 100%; }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 50px -15px var(--brand-primary); }
        .btn-primary:active { transform: translateY(0); }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-primary);
            padding: 18px 36px;
            border-radius: 16px;
            font-size: 1.1rem;
            font-weight: 500;
            border: 1px solid var(--border-light);
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn-secondary:hover { background: rgba(255, 255, 255, 0.08); }

        /* 3D Tilt Hero Image */
        .hero-showcase {
            margin-top: 100px;
            position: relative;
            transform-style: preserve-3d;
            perspective: 2000px;
            opacity: 0;
            animation: slideUp 1s 0.8s forwards var(--ease-smooth);
        }

        .tilt-card {
            width: 100%;
            max-width: 1000px;
            margin: 0 auto;
            border-radius: 20px;
            background: rgba(20, 20, 20, 0.5);
            padding: 12px;
            border: 1px solid var(--border-light);
            box-shadow: 
                0 0 0 1px rgba(255, 255, 255, 0.05),
                0 50px 100px -20px rgba(0, 0, 0, 0.7);
            transform: rotateX(10deg);
            transition: transform 0.1s ease-out; /* JavaScript controls this */
        }

        .tilt-card img {
            border-radius: 12px;
            width: 100%;
            border: 1px solid rgba(255,255,255,0.05);
        }

        /* --------------------------------------------------------------------------
           6. MARQUEE (Tech Stack)
        -------------------------------------------------------------------------- */
        .tech-stack {
            padding: 60px 0;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            background: rgba(0,0,0,0.3);
            overflow: hidden;
            display: flex;
            justify-content: center;
        }

        .tech-track {
            display: flex;
            gap: 60px;
            opacity: 0.5;
            filter: grayscale(100%);
        }
        
        .tech-item {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* --------------------------------------------------------------------------
           7. BENTO GRID (Features)
        -------------------------------------------------------------------------- */
        .section-padding { padding: 140px 0; }
        
        .header-center {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 80px;
        }

        .header-center h2 { font-size: 3rem; margin-bottom: 16px; }
        .header-center p { font-size: 1.1rem; color: var(--text-secondary); }

        .bento-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            grid-template-rows: repeat(2, minmax(300px, auto));
            gap: 24px;
        }

        .bento-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            border-radius: 24px;
            padding: 40px;
            position: relative;
            overflow: hidden;
            transition: all 0.4s var(--ease-smooth);
        }

        /* Hover Glow Effect */
        .bento-card::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            border-radius: 24px;
            box-shadow: inset 0 0 0 1px rgba(255,255,255,0);
            transition: box-shadow 0.4s;
            pointer-events: none;
        }

        .bento-card:hover {
            transform: translateY(-5px);
            background: var(--bg-surface-hover);
            border-color: rgba(255,255,255,0.2);
        }
        
        .bento-card:hover::after { box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1); }

        /* Grid Spans */
        .span-8 { grid-column: span 8; }
        .span-4 { grid-column: span 4; }
        .span-6 { grid-column: span 6; }

        .bento-icon {
            width: 48px;
            height: 48px;
            background: rgba(255,255,255,0.05);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--brand-primary);
        }

        .bento-card h3 { font-size: 1.5rem; margin-bottom: 12px; }
        .bento-card p { color: var(--text-secondary); line-height: 1.7; font-size: 1rem; }

        /* Abstract Decoration inside cards */
        .card-decoration {
            position: absolute;
            bottom: 0;
            right: 0;
            width: 100%;
            height: 150px;
            background: linear-gradient(to top, rgba(59, 130, 246, 0.05), transparent);
            pointer-events: none;
        }

        /* --------------------------------------------------------------------------
           8. CODE SHOWCASE (Terminal)
        -------------------------------------------------------------------------- */
        .terminal-wrapper {
            background: #000;
            border-radius: 20px;
            border: 1px solid #333;
            box-shadow: 0 20px 60px rgba(0,0,0,0.8);
            font-family: 'JetBrains Mono', monospace;
            padding: 0;
            overflow: hidden;
            max-width: 900px;
            margin: 0 auto;
        }

        .terminal-bar {
            background: #1a1a1a;
            padding: 12px 20px;
            display: flex;
            gap: 8px;
            border-bottom: 1px solid #333;
        }

        .dot { width: 12px; height: 12px; border-radius: 50%; }
        .red { background: #ff5f57; }
        .yellow { background: #febc2e; }
        .green { background: #28c840; }

        .terminal-content {
            padding: 30px;
            color: #d4d4d4;
            font-size: 0.95rem;
        }

        .code-line { margin-bottom: 8px; display: block; opacity: 0; transform: translateX(-10px); }
        .code-line.visible { opacity: 1; transform: translateX(0); transition: all 0.3s; }
        
        .keyword { color: #c678dd; }
        .string { color: #98c379; }
        .function { color: #61afef; }
        .comment { color: #5c6370; font-style: italic; }

        /* --------------------------------------------------------------------------
           9. STEPS (Timeline)
        -------------------------------------------------------------------------- */
        .step-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 120px;
        }

        .step-container.reverse { flex-direction: row-reverse; }

        .step-text { flex: 1; padding: 40px; }
        
        .step-num {
            font-size: 5rem;
            font-weight: 800;
            color: rgba(255,255,255,0.03);
            line-height: 1;
            margin-bottom: -20px;
        }

        .step-title { font-size: 2rem; margin-bottom: 16px; color: var(--text-primary); }
        
        .step-visual {
            flex: 1;
            position: relative;
        }

        .step-card {
            background: var(--bg-surface);
            border-radius: 16px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
            transition: transform 0.5s;
        }

        .step-card:hover { transform: scale(1.02); }

        /* --------------------------------------------------------------------------
           10. DOWNLOAD & FOOTER
        -------------------------------------------------------------------------- */
        .download-section {
            text-align: center;
            padding: 100px 0;
            background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, transparent 60%);
        }

        footer {
            border-top: 1px solid var(--border-light);
            padding: 80px 0 40px;
            background: #020202;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-brand h4 { font-size: 1.5rem; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
        .footer-col h5 { font-size: 0.9rem; color: var(--text-primary); margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; }
        .footer-col ul li { margin-bottom: 12px; }
        .footer-col ul li a { color: var(--text-secondary); font-size: 0.9rem; }
        .footer-col ul li a:hover { color: var(--brand-primary); }

        .copyright {
            text-align: center;
            color: var(--text-tertiary);
            font-size: 0.85rem;
            padding-top: 40px;
            border-top: 1px solid var(--border-light);
        }

        /* --------------------------------------------------------------------------
           11. NOTIFICATIONS (Toast)
        -------------------------------------------------------------------------- */
        .toast-container {
            position: fixed;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%) translateY(100px);
            background: rgba(20, 20, 20, 0.9);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-light);
            padding: 16px 24px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
            z-index: 9999;
            opacity: 0;
            transition: all 0.5s var(--ease-elastic);
        }

        .toast-container.active {
            transform: translateX(-50%) translateY(0);
            opacity: 1;
        }

        .toast-icon { color: #10B981; }

        /* --------------------------------------------------------------------------
           12. RESPONSIVE MEDIA QUERIES
        -------------------------------------------------------------------------- */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 3.5rem; }
            .bento-grid { grid-template-columns: 1fr; }
            .span-8, .span-4, .span-6 { grid-column: span 1; }
            .step-container, .step-container.reverse { flex-direction: column; text-align: center; gap: 40px; }
            .step-text { padding: 0; }
        }

        @media (max-width: 768px) {
            .nav-links { display: none; } /* Simplified mobile nav */
            .hero { padding-top: 120px; }
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .hero-showcase { display: none; /* Hide heavy 3d image on mobile for performance */ }
        }

        /* Animation Keyframes */
        @keyframes fadeDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes slideUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); } 70% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); } 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); } }