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

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

    body {
        margin: 0;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    /* Scroll reveal animations — progressive enhancement */
    @media (prefers-reduced-motion: no-preference) {
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            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);
        }
    }

    @media (prefers-reduced-motion: reduce) {
        .reveal {
            opacity: 1;
            transform: none;
            transition: none;
        }
    }

    /* Mobile menu transitions */
    #mobile-menu {
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    #mobile-menu.hidden {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }
    #mobile-menu:not(.hidden) {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    /* Navbar shadow on scroll */
    #navbar.scrolled {
        box-shadow: 0 1px 20px rgba(2, 44, 34, 0.08);
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #fefdf8;
    }
    ::-webkit-scrollbar-thumb {
        background: #065f46;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #047857;
    }

    /* Selection color */
    ::selection {
        background: #065f46;
        color: #fefdf8;
    }

    /* Focus styles */
    a:focus-visible, button:focus-visible {
        outline: 2px solid #10b981;
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* Smooth image loading */
    img {
        image-rendering: auto;
        loading: lazy;
    }