/* ─── Base & Utilities ─── */
    *, *::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; }
    img { max-width: 100%; height: auto; display: block; }
    a { text-decoration: none; }
    button { cursor: pointer; border: none; background: none; }
    ul, ol { list-style: none; margin: 0; padding: 0; }

    /* ─── Header Scroll State ─── */
    #site-header {
        background: transparent;
        transition: background 0.35s ease, box-shadow 0.35s ease, backdrop-filter 0.35s ease;
    }
    #site-header.scrolled {
        background: rgba(10, 30, 18, 0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: 0 1px 0 rgba(255,255,255,0.06), 0 4px 24px rgba(0,0,0,0.2);
    }

    /* ─── Nav Links ─── */
    .nav-link { position: relative; }
    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        width: 0;
        height: 2px;
        background: #D4A84B;
        transition: width 0.25s ease, left 0.25s ease;
        border-radius: 1px;
    }
    .nav-link:hover::after {
        width: 60%;
        left: 20%;
    }

    /* ─── Mobile Menu ─── */
    #mobile-menu {
        animation: slideDown 0.25s ease forwards;
    }
    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-8px); }
        to { opacity: 1; transform: translateY(0); }
    }
    #mobile-menu.hiding {
        animation: slideUp 0.2s ease forwards;
    }
    @keyframes slideUp {
        from { opacity: 1; transform: translateY(0); }
        to { opacity: 0; transform: translateY(-8px); }
    }
    .mobile-link {
        display: block;
        padding: 0.75rem 1rem;
        color: rgba(255,255,255,0.85);
        font-weight: 500;
        border-radius: 0.5rem;
        transition: background 0.2s ease, color 0.2s ease;
    }
    .mobile-link:hover {
        background: rgba(255,255,255,0.08);
        color: #fff;
    }

    /* ─── Scroll Reveal ─── */
    @media (prefers-reduced-motion: no-preference) {
        .reveal {
            opacity: 1;
            transform: none;
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal[data-reveal="hidden"] {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
        }
        .reveal[data-reveal="hidden"].delay-100 { transition-delay: 0.1s; }
        .reveal[data-reveal="hidden"].delay-200 { transition-delay: 0.2s; }
        .reveal[data-reveal="hidden"].delay-300 { transition-delay: 0.3s; }
    }

    /* ─── Focus Styles ─── */
    :focus-visible {
        outline: 2px solid #D4A84B;
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* ─── Selection ─── */
    ::selection {
        background: rgba(20, 67, 42, 0.2);
        color: #14432A;
    }

    /* ─── Smooth image loading ─── */
    img {
        background-color: #e8e0d4;
    }