html, body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    height: 100%;
    background: black;
  }

  canvas {
    display: block;
    width: 100%;
    height: 100%;
    background-color: black;
  }

  #controlWrapper {
    position: fixed;
    bottom: 10px;
    left: 10px;
    font-family: sans-serif;
    z-index: 10;
  }

  #controlToggle {
    background: black;
    color: cyan;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
  }

  #controls {
    display: none;
    margin-top: 5px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 10px;
    border-radius: 8px;
  }

  #controls label {
    display: block;
    margin-bottom: 5px;
  }

  input[type="range"], input[type="color"], input[type="text"] {
    width: 150px;
  }

  button {
    margin-top: 5px;
    padding: 4px 8px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
  }