body {
      font-family: 'Arial', sans-serif;
      background-color: #121212;
      color: #fff;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      margin: 0;
    }

    .container {
      max-width: 500px;
      width: 90%;
      text-align: center;
    }

    #text-display {
      background-color: #1e1e1e;
      padding: 20px;
      border-radius: 10px;
      margin-bottom: 20px;
      font-size: 18px;
      line-height: 1.5;
    }

    #text-display.end {
      color: #00e676;
      font-weight: bold;
    }

    textarea {
      width: 100%;
      height: 100px;
      font-size: 16px;
      padding: 10px;
      border-radius: 8px;
      border: none;
      resize: none;
      outline: none;
    }

    .stats {
      margin: 15px 0;
    }

    button {
      background-color: #00bfa5;
      color: #fff;
      padding: 10px 25px;
      font-size: 16px;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      margin: 5px;
    }

    .level-select {
      margin-bottom: 15px;
    }

    select {
      padding: 8px;
      border-radius: 5px;
      border: none;
      font-size: 14px;
    }

    #next-btn {
      display: none;
    }