/* GLOBAL DESIGN SYSTEM */
        :root {
            --bg-primary: #060606;
            --bg-secondary: #0c0c0c;
            --text-primary: #ffffff;
            --text-muted: #888888;
            --accent-emerald: #00ff66;
            --border-thin: rgba(255, 255, 255, 0.1);
            --section-padding: clamp(4rem, 10vw, 8rem);
            --container-width: 1200px;
            --glass-blur: blur(12px);
        }
        /* STICKY NAV */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 2000;
            padding: 0.75rem 1.5em;
            backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid var(--border-thin);
            transition: all 0.3s ease;
        }

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

        .navbar__logo {
            font-size: 1.25rem;
            font-weight: 800;
            text-decoration: none;
            color: var(--text-primary);
        }

        .navbar__links {
            display: flex;
            gap: 2rem;
            align-items: center;
        }

        /* MOBILE HAMBURGER */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            z-index: 2001;
        }

        .hamburger span {
            display: block;
            width: 25px;
            height: 2px;
            background: #fff;
            transition: 0.3s;
        }

        /* MOBILE DROPDOWN */
        .mobile-nav {
            position: fixed;
            top: -100%; 
            left: 0;
            width: 100%;
            background: rgba(6, 6, 6, 0.95);
            backdrop-filter: blur(20px);
            padding: 6rem 2rem 3rem;
            border-bottom: 1px solid var(--border-thin);
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1999;
        }

        .mobile-nav.open { top: 0; }

        .navbar__link {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.875rem;
            font-weight: 500;
            transition: color 0.3s;
        }

        .navbar__link:hover { color: var(--text-primary); }

        .btn-primary {
            background: var(--text-primary);
            color: var(--bg-primary);
            padding: 0.75rem 1.5rem;
            border-radius: 4px;
            font-weight: 700;
            text-decoration: none;
            font-size: 0.875rem;
            transition: transform 0.2s;
            text-align: center;
        }

        .btn-primary:hover { transform: translateY(-2px); }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .navbar__links { display: none; }
        }