/* ── Base & Utilities ── */
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 80px; }
    body { overflow-x: hidden; }
    img { max-width: 100%; height: auto; }

    /* ── Scroll Reveal Base (progressive enhancement) ── */
    @media (prefers-reduced-motion: no-preference) {
        .reveal-up,
        .reveal-left,
        .reveal-right {
            opacity: 1;
            transform: none;
        }
    }

    @media (prefers-reduced-motion: no-preference) {
        .reveal-up {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .reveal-left {
            opacity: 0;
            transform: translateX(-40px);
            transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .reveal-right {
            opacity: 0;
            transform: translateX(40px);
            transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .reveal-up.revealed,
        .reveal-left.revealed,
        .reveal-right.revealed {
            opacity: 1;
            transform: none;
        }
    }

    /* ── Navbar ── */
    #navbar {
        background: transparent;
    }
    #navbar.scrolled {
        background: rgba(253, 251, 247, 0.95);
        backdrop-filter: blur(12px);
        box-shadow: 0 1px 20px rgba(27, 67, 50, 0.08);
    }

    /* ── Mobile Menu ── */
    #mobile-menu.open {
        opacity: 1;
        pointer-events: all;
    }
    #mobile-menu.closed {
        opacity: 0;
        pointer-events: none;
    }
    .mobile-link {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
    }
    #mobile-menu.open .mobile-link {
        opacity: 1;
        transform: translateY(0);
    }
    #mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
    #mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
    #mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
    #mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
    #mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }

    /* ── Menu Button Animation ── */
    #menu-btn.active .menu-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    #menu-btn.active .menu-line:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }
    #menu-btn.active .menu-line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
        width: 1.5rem;
    }

    /* ── Custom Selection ── */
    ::selection {
        background: rgba(212, 165, 116, 0.3);
        color: #1B4332;
    }

    /* ── Focus Styles ── */
    a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
        outline: 2px solid #D4A574;
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* ── Smooth Image Loading ── */
    img {
        transition: opacity 0.3s ease;
    }