*, *::before, *::after {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        scroll-padding-top: 80px;
    }

    body {
        font-family: 'Inter', sans-serif;
        background-color: #020617;
        color: #f8fafc;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #0f172a;
    }
    ::-webkit-scrollbar-thumb {
        background: #1e293b;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #334155;
    }

    /* Selection */
    ::selection {
        background: rgba(13, 148, 136, 0.3);
        color: #ccfbf1;
    }

    /* Service card hover lift */
    .service-card {
        transform: translateY(0);
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                    border-color 0.4s ease,
                    background-color 0.4s ease;
    }
    .service-card:hover {
        transform: translateY(-4px);
    }

    /* Area card overlay */
    .area-card {
        box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    /* Navbar scroll state */
    #navbar.scrolled {
        background: rgba(2, 6, 23, 0.95);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(30, 41, 59, 0.5);
    }

    /* Mobile menu transitions */
    #mobile-menu {
        animation: slideDown 0.3s ease-out;
    }
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Scroll reveal animations (progressive enhancement) */
    @media (prefers-reduced-motion: no-preference) {
        .reveal {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                        transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        
        .reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Focus styles for accessibility */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
        outline: 2px solid #2dd4bf;
        outline-offset: 2px;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
        html {
            scroll-padding-top: 70px;
        }
    }