body {
    margin: 0;
    font-family: 'Courier New', monospace;
    background-color: #0d1117;
    color: #c9d1d9;
  }
  
  header {
    background-color: #161b22;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
    position: relative;
    top: 0;
    width: 100%;
    z-index: 10;
  }
  
  .main-title {
    color: #58a6ff;
    font-size: 2.5rem;
    margin: 0;
    transition: color 0.3s ease;
  }
  
  .main-title:hover {
    color: #1f6feb;
    cursor: pointer;
  }
  
  /* Gap between header and container */
  .container {
    margin: 40px auto 0 auto;
    width: 90%;
    max-width: 600px;
    background-color: #161b22;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 255, 0, 0.2);
    transition: transform 0.3s ease;
  }
  
  .container:hover {
    transform: scale(1.02);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
  }
  
  #scrambled-word {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #39ff14;
  }
  
  input[type="text"] {
    width: 100%;
    padding: 12px;
    font-size: 1.1rem;
    background-color: #0d1117;
    color: #58a6ff;
    border: 2px solid #58a6ff;
    border-radius: 8px;
    margin-bottom: 10px;
  }
  
  button {
    background-color: #39ff14;
    color: #0d1117;
    border: none;
    padding: 12px 20px;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 10px;
  }
  
  button:hover {
    background-color: #00cc00;
  }
  
  #timer {
    font-size: 1.2rem;
    margin-top: 20px;
    color: #ff5555;
  }
  
  #result {
    margin-top: 15px;
    font-size: 1.2rem;
  }
  
  #score {
    margin-top: 20px;
    font-size: 1.2rem;
  }
  .container {
    margin: 40px auto 0 auto;
    width: 90%;
    max-width: 600px;
    background-color: #161b22;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 255, 0, 0.2);
    transition: transform 0.3s ease;
  
    /* Centering content */
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .popup {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
    z-index: 1000;
  }
  
  .popup-content {
    background-color: #161b22;
    color: #c9d1d9;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 0 25px rgba(0, 255, 0, 0.4);
    text-align: center;
  }
  
  .popup-content h2 {
    margin-bottom: 20px;
    font-size: 2rem;
  }
  
  .popup-content button {
    background-color: #39ff14;
    color: #0d1117;
    padding: 12px 24px;
    font-size: 1.1rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  .popup-content button:hover {
    background-color: #00cc00;
  }