:root {
            --primary: #50FFAF;
            --bg-deep: #051424;
            --surface-glass: rgba(18, 33, 49, 0.4);
        }
        body {
            background-color: var(--bg-deep);
            color: #d4e4fa;
            font-family: 'Inter', sans-serif;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        h1, h2, h3, .font-heading {
            font-family: 'Montserrat', sans-serif;
        }
        .glass-card {
            background: var(--surface-glass);
            backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
        }
        .glass-card:hover {
            border-color: rgba(80, 255, 175, 0.2);
            background: rgba(18, 33, 49, 0.6);
            transform: translateY(-4px);
        }
        .neon-btn {
            background: var(--primary);
            color: #051424;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .neon-btn:hover {
            filter: brightness(1.1);
            box-shadow: 0 10px 20px -10px var(--primary);
        }
        .grid-bg {
            background-image: radial-gradient(circle at 2px 2px, rgba(80, 255, 175, 0.03) 1px, transparent 0);
            background-size: 60px 60px;
        }
        .nav-link {
            position: relative;
            transition: color 0.3s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        #mobile-menu {
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .tech-gradient {
            background: radial-gradient(circle at 50% 0%, rgba(80, 255, 175, 0.1) 0%, transparent 70%);
        }
        details summary::-webkit-details-marker {
            display: none;
        }