.container {
    max-width: 500px;
    margin: 50px auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  }
  h1 {
    text-align: center;
    color: #333;
  }
  label {
    font-weight: bold;
    display: block;
    margin-top: 10px;
  }
  input[type="file"], input[type="password"], button {
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
  }
  button {
    display: inline-block;
    padding: 12px 25px;
    background: linear-gradient(90deg, #4caf50, #2e7d32);
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 24px;
    font-weight: bold;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
  }
  button:hover {
    background: linear-gradient(90deg, #66bb6a, #388e3c);
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
  }
  .message {
    margin-top: 15px;
    text-align: center;
    color: green;
    font-weight: bold;
  }