/* ── Base & Typography ── */
    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        overflow-x: hidden;
    }

    ::selection {
        background-color: rgba(75, 191, 130, 0.3);
        color: #070e1e;
    }

    /* ── Scroll Reveal (progressive enhancement) ── */
    @media (prefers-reduced-motion: no-preference) {
        .reveal {
            opacity: 0;
            transform: translateY(32px);
            transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                        transform 0.8s cubic-bezier(0.22, 1, 0.36, 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; }
    }

    /* Default visible state for reduced-motion or no-JS */
    @media (prefers-reduced-motion: reduce) {
        .reveal {
            opacity: 1;
            transform: none;
        }
    }

    /* ── Navbar ── */
    #navbar {
        background: transparent;
    }

    #navbar.scrolled {
        background: rgba(4, 8, 20, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
    }

    #navbar.scrolled .nav-link {
        color: rgba(255, 255, 255, 0.85);
    }

    /* ── Mobile Menu ── */
    .mobile-menu-open #mobile-menu {
        opacity: 1;
        pointer-events: auto;
    }

    .mobile-menu-open .menu-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-open .menu-line:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-open .menu-line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
        width: 1.5rem;
    }

    .mobile-link {
        opacity: 0;
        transform: translateY(12px);
        transition: opacity 0.3s ease, transform 0.3s 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: 0.05s; }
    .mobile-menu-open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
    .mobile-menu-open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
    .mobile-menu-open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
    .mobile-menu-open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

    /* ── Image Hover ── */
    .group img {
        will-change: transform;
    }

    /* ── Form Focus States ── */
    input:focus,
    textarea:focus {
        outline: none;
    }

    /* ── Subtle Pattern Overlay ── */
    .bg-pattern {
        background-image: radial-gradient(rgba(75, 191, 130, 0.03) 1px, transparent 1px);
        background-size: 24px 24px;
    }

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

    ::-webkit-scrollbar-track {
        background: #040814;
    }

    ::-webkit-scrollbar-thumb {
        background: rgba(75, 191, 130, 0.3);
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: rgba(75, 191, 130, 0.5);
    }