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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>Rotating Spring Loop</title>
  <style>
    body, html {
      margin: 0;
      padding: 0;
      background-color: black;
      overflow: hidden;
    }
    canvas {
      display: block;
    }
  </style>
</head>
<body>
<canvas id="canvas"></canvas>

<script>
  const canvas = document.getElementById("canvas");
  const ctx = canvas.getContext("2d");
  let width = canvas.width = window.innerWidth;
  let height = canvas.height = window.innerHeight;

  window.addEventListener("resize", () => {
    width = canvas.width = window.innerWidth;
    height = canvas.height = window.innerHeight;
  });

  function animate(time) {
    ctx.clearRect(0, 0, width, height);

    const centerX = width / 2;
    const centerY = height / 2;

    ctx.lineWidth = 2;
    ctx.strokeStyle = "#00ccff";
    ctx.shadowColor = "#00ccff";
    ctx.shadowBlur = 15;

    ctx.beginPath();
    const loops = 10;         // Number of loops
    const radius = 120;       // Overall loop radius
    const spread = 60;        // Loop width
    const t = time * 0.002;

    for (let i = 0; i < loops * Math.PI; i += 0.05) {
      // Angle for rotation
      const angle = i + t;

      // Helix coordinates
      const r = radius - i * 1.5; // reduce radius for inner loops
      const x = centerX + Math.cos(angle) * r;
      const y = centerY + Math.sin(angle) * r + Math.sin(i * 3 + t) * spread;

      if (i === 0) ctx.moveTo(x, y);
      else ctx.lineTo(x, y);
    }

    ctx.stroke();
    requestAnimationFrame(animate);
  }

  animate(0);
</script>
</body>
</html>

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