Codelab | Online Coding Playground For Practice

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Welcome to Codelab Editor</title>
  <style>
    * {
      box-sizing: border-box;
    }

    html, body {
      margin: 0;
      padding: 0;
      overflow: hidden;
      height: 100vh;
      font-family: 'Inter', sans-serif;
      background: #fff;
    }

    canvas {
      position: absolute;
      top: 0;
      left: 0;
      z-index: 0;
    }

    .container {
      position: relative;
      z-index: 2;
      background-color: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(10px);
      border-radius: 0.75rem;
      box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 2rem;
      max-width: 80rem;
      width: 90%;
      margin: auto;
      color: white;
    }

    .overlay-wrapper {
      position: relative;
      z-index: 1;
      height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 1rem;
    }

    .heading-gradient {
      font-size: 2.25rem;
      font-weight: 600;
      background-image: linear-gradient(to bottom, #2a73cc 70%, #153966);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 1.5rem;
    }

    .paragraph {
      font-size: 1.125rem;
      color: #999;
      margin-bottom: 2rem;
    }

    .button-group {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 1rem;
    }

    .gradient-button {
      background-image: linear-gradient(to bottom, #2a73cc 70%, #153966);
      text-decoration: none;
      color: white;
      font-weight: 600;
      padding: 0.75rem 1.5rem;
      border-radius: 5px;
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease-in-out, background-image 0.3s ease-in-out;
      cursor: pointer;
      border: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .gradient-button:hover {
      transform: translateY(-2px);
      background-image: linear-gradient(to bottom, #2a73cc 90%, #153966);
    }

    .preview-card {
      margin-top: 2rem;
      padding: 1.5rem;
      background: rgba(0,0,0, 0.1);
      border-radius: 0.5rem;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }

    .preview-title {
      font-size: 1.5rem;
      font-weight: 600;
      color: #2a73cc;
      margin-bottom: 1rem;
    }

    .preview-text {
      color: #999;
    }
  </style>
</head>
<body>
  <canvas id="canvas"></canvas>
  <div class="overlay-wrapper">
    <div class="container">
      <h1 class="heading-gradient">Welcome to Codelab Editor</h1>
      <p class="paragraph">
        Code to life: HTML, CSS, JavaScript, and jQuery in real-time.
      </p>
      <div class="button-group">
        <a href="html/" target="_blank" class="gradient-button">Learn HTML</a>
        <a href="css/" target="_blank" class="gradient-button">Explore CSS</a>
        <a href="/" target="_blank" class="gradient-button">More..</a>
      </div>
      <div class="preview-card">
        <h2 class="preview-title">Live Preview Example</h2>
        <p class="preview-text">Type some HTML on the left side and see the output in real-time on the right side!</p>
      </div>
    </div>
  </div>

  <script>
    const canvas = document.getElementById('canvas');
    const ctx = canvas.getContext('2d');
    let balls = [];
    const numBalls = 30;

    function resizeCanvas() {
      canvas.width = window.innerWidth;
      canvas.height = window.innerHeight;
      initBalls();
    }

    function initBalls() {
      balls = [];
      for (let i = 0; i < numBalls; i++) {
        balls.push({
          x: Math.random() * canvas.width,
          y: Math.random() * canvas.height,
          vx: (Math.random() - 0.5) * 6,
          vy: (Math.random() - 0.5) * 6,
          r: 10 + Math.random() * 20,
          color: `hsl(${Math.random() * 360}, 70%, 60%)`
        });
      }
    }

    function drawBall(ball) {
      ctx.beginPath();
      ctx.arc(ball.x, ball.y, ball.r, 0, Math.PI * 2);
      ctx.fillStyle = ball.color;
      ctx.shadowColor = ball.color;
      ctx.shadowBlur = 20;
      ctx.fill();
    }

    function update() {
      ctx.clearRect(0, 0, canvas.width, canvas.height);
      balls.forEach(ball => {
        ball.x += ball.vx;
        ball.y += ball.vy;
        if (ball.x + ball.r > canvas.width || ball.x - ball.r < 0) ball.vx *= -1;
        if (ball.y + ball.r > canvas.height || ball.y - ball.r < 0) ball.vy *= -1;
        drawBall(ball);
      });
      requestAnimationFrame(update);
    }

    window.addEventListener('resize', resizeCanvas);
    resizeCanvas();
    update();
  </script>
</body>
</html>