* {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', sans-serif;
            background-color: #0a0a0a;
            color: #e5e5e5;
            overflow-x: hidden;
        }

        .header-container {
            background: #000;
            border-radius: 9999px;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-item {
            position: relative;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
        }
        .nav-item:hover {
            transform: translateY(-2px);
            text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
        }
        .signin-btn {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
        }
        .signin-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: scale(1.05);
        }
        .download-btn {
            background: white;
            color: black;
            transition: all 0.3s ease;
        }
        .download-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
        }
        .glass-card {
            background: rgba(10, 10, 10, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-card:hover {
            background: rgba(23, 23, 23, 0.8);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
        }
        .btn {
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            font-weight: 600;
            position: relative;
            overflow: hidden;
        }
        .btn:hover {
            transform: translateY(-2px);
        }
        .btn-primary {
            background-color: white;
            color: black;
        }
        .btn-primary:hover {
            background-color: #e5e5e5;
            box-shadow: 0 10px 15px -3px rgba(255, 255, 255, 0.1);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .vercel-btn {
            background: white;
            color: black;
            border-radius: 5px;
            padding: 0.5rem 1rem;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .vercel-btn:hover {
            background: #e5e5e5;
            transform: translateY(-1px);
        }
        .nav-item {
            position: relative;
        }
        .nav-item:after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: white;
            transition: width 0.3s ease;
        }
        .nav-item:hover:after {
            width: 100%;
        }
        .modal {
            animation: modalFadeIn 0.3s ease-out;
        }
        @keyframes modalFadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .loader {
            animation: spin 1s linear infinite;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        .toggle {
            transition: all 0.3s ease;
        }
        .toggle-checked {
            background-color: white;
        }
        .toggle-dot {
            transition: all 0.3s ease;
        }
        .toggle-checked .toggle-dot {
            transform: translateX(24px);
            background-color: black;
        }
        .grid-pattern {
            background-image: 
                linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .hero-gradient {
            background: radial-gradient(circle at 70% 30%, rgba(138, 43, 226, 0.1) 0%, rgba(0, 0, 0, 0) 50%);
        }
        .blob {
            filter: blur(60px);
            opacity: 0.1;
        }
        
        /* About page specific styles */
        .mission-card {
            background: linear-gradient(135deg, rgba(30, 30, 30, 0.8) 0%, rgba(50, 50, 50, 0.6) 100%);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .timeline-item {
            position: relative;
            padding-left: 2rem;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 2px;
            height: 100%;
            background: rgba(255, 255, 255, 0.2);
        }
        .timeline-dot {
            position: absolute;
            left: -0.5rem;
            top: 0.25rem;
            width: 1rem;
            height: 1rem;
            border-radius: 50%;
            background: white;
        }
        
        /* Mobile responsiveness additions */
        @media (max-width: 768px) {
            body {
                overflow-x: hidden;
            }
            
            * {
                max-width: 100%;
                box-sizing: border-box;
            }
            
            .header-container {
                padding: 0.75rem;
                border-radius: 12px;
            }
            
            .hero-gradient {
                background: radial-gradient(circle at 50% 30%, rgba(138, 43, 226, 0.1) 0%, rgba(0, 0, 0, 0) 50%);
            }
            
            h1 {
                font-size: 2.5rem;
                line-height: 1.2;
            }
            
            .timeline-item {
                padding-left: 1.5rem;
            }
            
            /* Mobile menu specific styles */
            #mobileMenuButton {
                position: fixed;
                top: 1.5rem;
                right: 1rem;
                z-index: 55;
            }
            
            #mobileMenuOverlay {
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);
                z-index: 60;
            }
            
            #mobileMenu {
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
                z-index: 61;
                max-height: 100vh;
                overflow-y: auto;
            }
            
            /* Ensure mobile menu appears above header */
            header {
                z-index: 50;
            }
            
            /* Prevent horizontal overflow */
            .max-w-7xl {
                max-width: 100%;
                padding-left: 1rem;
                padding-right: 1rem;
            }
            
            .container {
                max-width: 100%;
                overflow-x: hidden;
            }
        }

        @media (max-width: 640px) {
            body {
                overflow-x: hidden;
            }
            
            * {
                max-width: 100%;
                box-sizing: border-box;
            }
            
            .header-container {
                flex-direction: column;
                align-items: center;
                padding: 1rem;
                max-width: 100%;
            }
            
            .nav-menu {
                flex-direction: column;
                margin-top: 1rem;
            }
            
            .nav-item {
                margin: 0.5rem 0;
            }
            
            .action-buttons {
                margin-top: 1rem;
            }
            
            h1 {
                font-size: 2rem;
            }
        }