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

    html {
        scroll-behavior: smooth;
    }

    body {
        overflow-x: hidden;
    }

    /* Marquee Animation */
    .marquee-track {
        display: flex;
        animation: marquee 30s linear infinite;
    }

    .marquee-content {
        flex-shrink: 0;
        padding-left: 1rem;
    }

    @keyframes marquee {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(-50%);
        }
    }

    /* Scroll Reveal */
    .scroll-reveal {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

    @media (prefers-reduced-motion: no-preference) {
        .scroll-reveal {
            opacity: 0;
            transform: translateY(30px);
        }

        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Navbar Scrolled State */
    #navbar.scrolled {
        background: rgba(2, 6, 23, 0.92);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(45, 212, 191, 0.08);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    /* Custom Selection */
    ::selection {
        background: rgba(13, 148, 136, 0.4);
        color: #f0fdfa;
    }

    /* Focus Styles */
    :focus-visible {
        outline: 2px solid #2dd4bf;
        outline-offset: 2px;
    }

    /* Scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }

    ::-webkit-scrollbar-track {
        background: #0f172a;
    }

    ::-webkit-scrollbar-thumb {
        background: #1e293b;
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #334155;
    }

    /* Mobile Menu Animation */
    #mobile-menu {
        animation: slideDown 0.3s ease-out;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }