/* Base */
    *, *::before, *::after {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        overflow-x: hidden;
    }

    ::selection {
        background: rgba(52, 211, 153, 0.3);
        color: #ffffff;
    }

    /* Scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #050d1a;
    }
    ::-webkit-scrollbar-thumb {
        background: rgba(52, 211, 153, 0.3);
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: rgba(52, 211, 153, 0.5);
    }

    /* Reveal animations — progressive enhancement, hidden by default */
    @media (prefers-reduced-motion: no-preference) {
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal:nth-child(2) { transition-delay: 0.1s; }
        .reveal:nth-child(3) { transition-delay: 0.2s; }
        .reveal:nth-child(4) { transition-delay: 0.3s; }
    }

    /* Fallback: ensure content is always visible if JS is disabled */
    .reveal {
        opacity: 1;
        transform: none;
    }
    @media (prefers-reduced-motion: no-preference) {
        .reveal {
            opacity: 0;
            transform: translateY(30px);
        }
    }

    /* Navbar glass effect */
    #navbar.scrolled {
        background: rgba(2, 6, 16, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    #navbar.scrolled .font-display {
        color: #ffffff;
    }

    /* Mobile menu transitions */
    #mobile-menu {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }
    #mobile-menu.open {
        max-height: 400px;
    }

    /* Custom select styling */
    select option {
        background: #050d1a;
        color: #ffffff;
    }

    /* Focus visible for accessibility */
    a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
        outline: 2px solid #34d399;
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* Smooth image loading */
    img {
        opacity: 1;
        transition: opacity 0.3s ease;
    }

    /* Prevent layout shift on images */
    img {
        max-width: 100%;
        height: auto;
    }