* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
  }

  .login-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
  }

  .login-header {
    background: #4a6cf7;
    color: white;
    padding: 20px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
  }

  .login-body {
    padding: 30px;
  }

  .form-group {
    margin-bottom: 20px;
  }

  .form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
  }

  .form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border 0.3s ease;
  }

  .form-group input:focus {
    outline: none;
    border-color: #4a6cf7;
    box-shadow: 0 0 0 2px rgba(74, 108, 247, 0.2);
  }

  .error {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 5px;
    display: none;
  }

  .btn {
    width: 100%;
    padding: 14px;
    background: #4a6cf7;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s ease;
  }

  .btn:hover {
    background: #3a5bf0;
  }

  .login-footer {
    text-align: center;
    margin-top: 20px;
    color: #666;
    font-size: 0.9rem;
  }

  .login-footer a {
    color: #4a6cf7;
    text-decoration: none;
  }

  .login-footer a:hover {
    text-decoration: underline;
  }