body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f5f5f5;
    text-align: center;
    padding: 2em;
    margin: 0;
  }
  
  h1, h2 {
    color: #333;
  }
  
  #home, #game, #result {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 2em;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }
  
  label {
    display: block;
    margin: 1em 0;
    font-weight: bold;
  }
  
  input[type=\"number\"], select {
    padding: 0.5em;
    margin-left: 0.5em;
  }
  
  #problem {
    font-size: 1.5em;
    margin: 1em 0;
  }
  
  #inputArea {
    font-size: 1.5em;
    border: 1px solid #ccc;
    padding: 1em;
    background: #eee;
    min-height: 50px;
    white-space: pre-wrap;
  }
  
  button {
    padding: 0.8em 1.5em;
    font-size: 1em;
    margin-top: 1em;
    margin-right: 0.5em;
    cursor: pointer;
    border: none;
    background: #007bff;
    color: white;
    border-radius: 5px;
  }
  
  button:hover {
    background: #0056b3;
  }
  
  #timer {
    font-size: 1.2em;
    margin-top: 1em;
    color: #444;
  }