// Nelly Article — app shell

function NellyArticleApp() {
  React.useEffect(() => {
    document.body.classList.add("na-page");
    document.body.classList.add("fp-playfair-dmsans");
    return () => {
      document.body.classList.remove("na-page");
      document.body.classList.remove("fp-playfair-dmsans");
    };
  }, []);

  // Reveal-on-scroll
  React.useEffect(() => {
    const io = new IntersectionObserver((entries) => {
      entries.forEach((e) => { if (e.isIntersecting) { e.target.classList.add("in"); io.unobserve(e.target); } });
    }, { threshold: 0.06, rootMargin: "0px 0px -40px 0px" });
    const scan = () => document.querySelectorAll(".reveal:not(.in)").forEach((el) => io.observe(el));
    const raf1 = requestAnimationFrame(() => requestAnimationFrame(scan));
    const mo = new MutationObserver(() => requestAnimationFrame(scan));
    mo.observe(document.body, { childList: true, subtree: true });
    return () => { cancelAnimationFrame(raf1); io.disconnect(); mo.disconnect(); };
  }, []);

  // Reading progress bar
  const [progress, setProgress] = React.useState(0);
  React.useEffect(() => {
    const onScroll = () => {
      const h = document.documentElement;
      const max = (h.scrollHeight - h.clientHeight) || 1;
      setProgress(Math.min(1, Math.max(0, h.scrollTop / max)));
    };
    onScroll();
    window.addEventListener("scroll", onScroll, { passive: true });
    window.addEventListener("resize", onScroll);
    return () => { window.removeEventListener("scroll", onScroll); window.removeEventListener("resize", onScroll); };
  }, []);

  return (
    <>
      <div className="na-progress" style={{ transform: `scaleX(${progress})` }} aria-hidden="true" />

      <Header onDark={false} />

      <nav className="crumb" aria-label="Breadcrumb">
        <a href="Landing Page.html">Home</a>
        <span className="sl">/</span>
        <a href="Nelly.html">Nelly</a>
        <span className="sl">/</span>
        <span className="cur">On the second cleanse</span>
      </nav>

      <div className="na-shell">
        <NaMast />
        <NaHero />
        <NaLead />
        <NaBody />
        <NaGallery />
        <NaMore />
      </div>

      <Footer />
    </>
  );
}

ReactDOM.createRoot(document.getElementById("root")).render(<NellyArticleApp />);