body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #121212;
    margin: 0;
  }
  .login-container {
    background-color: #1e1e1e;
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 350px;
    text-align: center;
  }
  .login-container h2 {
    color: #fff;
    margin-bottom: 25px;
  }
  .login-form input[type="text"],
  .login-form input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    background-color: #2a2a2a;
    border: 1px solid #3a3a3a;
    color: #fff;
    border-radius: 4px;
    box-sizing: border-box;
  }
  .login-form button {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.2s;
  }
  .login-form button:hover {
    background-color: #45a049;
  }
  .error-message {
    color: #ff5252;
    margin-bottom: 15px;
    font-size: 14px;
  }