body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-image: url('images/city3.jpeg');
      background-size: cover;
      background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    flex-direction: column;
  }
  .login-box {
    background: rgba(255,255,255,0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
    width: 360px;
    text-align: center;
  }
  .login-box h2 {
    margin-bottom: 20px;
    color: #2c3e50;
    font-weight: bold;
  }
  input {
    width: 90%;
    padding: 12px;
    margin: 10px 0;
    border: none;
    border-radius: 12px;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.1);
  }
  button {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    background: linear-gradient(45deg, #4a69bd, #6a89cc);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 16px;
  }
  button:hover {
    background: linear-gradient(45deg, #1e3799, #4a69bd);
  }
  .error { color: red; margin-top: 10px; min-height: 20px; font-size: 14px; }
  .or { margin: 10px 0; font-weight: bold; color: #2c3e50; }
  .sod-title { font-weight: bold; margin-top: 20px; color: #2c3e50; }