*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  margin: 0;
  background: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.magnet-area {
  width: 300px;
  height: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
  /* Helpful border just for visualizing the trigger zone */
  border: 1px dashed #cbd5e1;
  border-radius: 50%;
}

.magnet-btn {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 140px;
  height: 140px;
  background: #0f172a;
  color: #ffffff;
  border-radius: 50%;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 1px;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  will-change: transform;
}

.btn-text {
  pointer-events: none;
  transition: transform 0.2s cubic-bezier(0.25, 1, 0.5, 1);
}

const area = document.getElementById("magnet-area");
const btn = document.getElementById("magnet-btn");
const text = document.getElementById("btn-text");

area.addEventListener("mousemove", function(e) {
  const rect = area.getBoundingClientRect();
  const centerX = rect.left + rect.width / 2;
  const centerY = rect.top + rect.height / 2;
  
  /* Calculate distance from center */
  const deltaX = e.clientX - centerX;
  const deltaY = e.clientY - centerY;
  
  /* Apply a fraction of the distance to the button (pulls it toward cursor) */
  btn.style.transform = "translate(" + (deltaX * 0.4) + "px, " + (deltaY * 0.4) + "px)";
  
  /* Apply an even smaller fraction to the text to create a parallax depth effect */
  text.style.transform = "translate(" + (deltaX * 0.15) + "px, " + (deltaY * 0.15) + "px)";
});

area.addEventListener("mouseleave", function() {
  /* Snap back elegantly */
  btn.style.transition = "transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1)";
  text.style.transition = "transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1)";
  
  btn.style.transform = "translate(0px, 0px)";
  text.style.transform = "translate(0px, 0px)";
});

area.addEventListener("mouseenter", function() {
  /* Remove transition to allow instant physics tracking */
  btn.style.transition = "none";
  text.style.transition = "none";
});