body {
    margin: 0;
    font-family: 'Consolas', 'Courier New', monospace;
    background-color: #121212;
    color: #e0e0e0;
    display: flex;
    justify-content: center;
    padding: 30px;
  }
  
  .container {
    max-width: 900px;
    width: 100%;
  }
  
  header {
    border-bottom: 1px solid #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
  }
  
  h1 {
    color: #4db8ff;
    margin: 0 0 5px 0;
  }
  
  p {
    color: #888;
    margin: 0;
  }
  
  .layout {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }
  
  .panel {
    flex: 1;
    min-width: 250px;
    background: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #333;
  }
  
  h2 {
    font-size: 1.2rem;
    color: #fff;
    margin-top: 0;
    border-bottom: 1px dashed #555;
    padding-bottom: 10px;
  }
  
  label {
    display: flex;
    flex-direction: column;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: #aaa;
  }
  
  span {
    color: #4db8ff;
    font-weight: bold;
  }
  
  input[type="range"] {
    margin-top: 8px;
    cursor: pointer;
  }
  
  .btn-primary {
    width: 100%;
    padding: 12px;
    background: #4db8ff;
    color: #121212;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    font-family: inherit;
    cursor: pointer;
    margin-top: 10px;
    transition: 0.2s;
  }
  
  .btn-primary:hover {
    background: #2a9df4;
  }
  
  .screen {
    flex: 2;
    min-width: 300px;
    background: #000;
    border-radius: 8px;
    border: 2px solid #333;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 0 20px rgba(0, 255, 0, 0.05);
  }
  
  canvas {
    display: block;
    width: 100%;
  }