body {
      font-family: 'Fira Code', monospace;
      background-color: #f8f9fa;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }
    .typing-box {
      background: white;
      border-radius: 12px;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
      padding: 2rem;
      max-width: 900px;
      margin: 40px auto;
    }
    .target-text span.correct {
      color: green;
    }
    .target-text span.incorrect {
      color: red;
      text-decoration: underline;
    }
    .footer {
      background-color: #f1f1f1;
      border-top: 1px solid #dee2e6;
      text-align: center;
      padding: 1rem 0;
      margin-top: auto;
    }
    .metrics-box {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      justify-content: space-between;
    }
    .metric {
      background-color: #f8f9fa;
      border: 1px solid #dee2e6;
      padding: 10px 20px;
      border-radius: 8px;
      font-weight: bold;
      flex-grow: 1;
      text-align: center;
    }