Hover Image List

[hidden] {
  display: none !important;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, sans-serif;
  background: #faf9f7;
  color: #111;
}

.layout {
  max-width: 640px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
}

header p {
  margin: 0 0 2.5rem;
  color: #666;
  font-size: 0.9rem;
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid #ddd;
}

.list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1.25rem 0;
  border-bottom: 1px solid #ddd;
  cursor: default;
}

.title {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.meta {
  font-size: 0.75rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.floater {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  height: 280px;
  pointer-events: none;
  z-index: 10;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  opacity: 0;
}

.floater img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 720px) {
  .floater {
    display: none !important;
  }
}

const reduced = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
const list = document.querySelector("[data-list]");
const floater = document.querySelector("[data-floater]");
const floaterImg = floater.querySelector("img");

if (window.matchMedia("(max-width: 720px)").matches) {
  floater.hidden = true;
} else if (!reduced) {
  gsap.set(floater, { xPercent: -50, yPercent: -50, scale: 0.92 });
  const xTo = gsap.quickTo(floater, "x", { duration: 0.45, ease: "power3.out" });
  const yTo = gsap.quickTo(floater, "y", { duration: 0.45, ease: "power3.out" });

  function show(src) {
    floater.hidden = false;
    floaterImg.src = src;
    gsap.to(floater, { opacity: 1, scale: 1, duration: 0.35, ease: "power2.out" });
  }

  function hide() {
    gsap.to(floater, {
      opacity: 0,
      scale: 0.92,
      duration: 0.25,
      onComplete: () => {
        floater.hidden = true;
      },
    });
  }

  window.addEventListener("mousemove", (e) => {
    xTo(e.clientX);
    yTo(e.clientY);
  });

  list.querySelectorAll("li").forEach((row) => {
    row.addEventListener("mouseenter", () => show(row.dataset.img));
    row.addEventListener("mouseleave", hide);
  });
}

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>Hover Image List</title>
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <main class="layout">
      <header>
        <h1>Selected work</h1>
        <p>Hover a row — preview follows your pointer.</p>
      </header>

      <ul class="list" data-list>
        <li data-img="https://images.unsplash.com/photo-1618005182384-a83a8bd57fbe?w=600&q=80">
          <span class="title">Aurora UI</span>
          <span class="meta">Brand · 2025</span>
        </li>
        <li data-img="https://images.unsplash.com/photo-1558591710-4b4a1ae0f04d?w=600&q=80">
          <span class="title">Kinetic Type</span>
          <span class="meta">Web · 2025</span>
        </li>
        <li data-img="https://images.unsplash.com/photo-1557672172-298e090bd0f1?w=600&q=80">
          <span class="title">Chromatic</span>
          <span class="meta">Campaign · 2024</span>
        </li>
        <li data-img="https://images.unsplash.com/photo-1567095761054-7a02e69e5c43?w=600&q=80">
          <span class="title">Mono Archive</span>
          <span class="meta">Editorial · 2024</span>
        </li>
      </ul>
    </main>

    <div class="floater" data-floater hidden aria-hidden="true">
      <img src="" alt="" />
    </div>

    <script src="https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap.min.js"></script>
    <script src="script.js"></script>
  </body>
</html>