:root {
      --primary-color: #1a4f72;
      --secondary-color: #3a7dbd;
      --accent-color: #0d8bff;
      --light-color: #f5f7fa;
      --dark-color: #2c3e50;
      --success-color: #28a745;
      --error-color: #dc3545;
      --border-radius: 8px;
      --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      --transition: all 0.3s ease;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }
    
    body {
      background-color: #f8f9fa;
      background-image: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 20px;
      position: relative;
    }
    
    .login-container {
      width: 100%;
      max-width: 440px;
      margin: 0 auto;
    }
    
    .corporate-header {
      text-align: center;
      margin-bottom: 25px;
    }
    
    .corporate-header .logo {
      height: 70px;
      margin-bottom: 15px;
    }
    
    .corporate-header h1 {
      color: var(--dark-color);
      font-size: 24px;
      font-weight: 600;
      margin-bottom: 5px;
    }
    
    .corporate-header p {
      color: #6c757d;
      font-size: 14px;
    }
    
    .card {
      background: white;
      border-radius: var(--border-radius);
      box-shadow: var(--box-shadow);
      overflow: hidden;
      transition: var(--transition);
    }
    
    .card:hover {
      box-shadow: 0 6px 25px rgba(0, 0, 0, 0.12);
    }
    
    .card-body {
      padding: 30px;
    }
    
    .card-body h2 {
      color: var(--primary-color);
      text-align: center;
      margin-bottom: 25px;
      font-weight: 600;
      font-size: 22px;
    }
    
    .form-group {
      margin-bottom: 20px;
    }
    
    .form-label {
      display: block;
      margin-bottom: 8px;
      font-weight: 500;
      color: var(--dark-color);
      font-size: 14px;
    }
    
    input[type="text"],
    input[type="password"],
    input[type="email"] {
      width: 100%;
      padding: 12px 15px;
      border: 1px solid #ddd;
      border-radius: var(--border-radius);
      font-size: 15px;
      transition: var(--transition);
      background-color: #fafbfc;
    }
    
    input:focus {
      outline: none;
      border-color: var(--secondary-color);
      box-shadow: 0 0 0 3px rgba(58, 125, 189, 0.15);
      background-color: #fff;
    }
    
    .input-with-icon {
      position: relative;
    }
    
    .input-icon {
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: #6c757d;
    }
    
    .input-with-icon input {
      padding-left: 45px;
    }
    
    #errorMessage {
      background-color: rgba(220, 53, 69, 0.08);
      color: var(--error-color);
      padding: 12px;
      border-radius: var(--border-radius);
      margin-bottom: 15px;
      text-align: center;
      font-size: 14px;
      border-left: 3px solid var(--error-color);
    }
    
    .button-group {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 10px;
    }
    
    .btn-primary, .btn-secondary {
      padding: 12px 20px;
      border: none;
      border-radius: var(--border-radius);
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      transition: var(--transition);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    
    .btn-primary {
      background-color: var(--primary-color);
      color: white;
    }
    
    .btn-primary:hover {
      background-color: #153a5a;
    }
    
    .btn-secondary {
      background-color: transparent;
      color: var(--secondary-color);
      border: 1px solid #ddd;
    }
    
    .btn-secondary:hover {
      background-color: #f8f9fa;
      border-color: var(--secondary-color);
    }
    
    /* Modal Styles */
    .modal {
      display: none;
      position: fixed;
      z-index: 1000;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.5);
      align-items: center;
      justify-content: center;
      padding: 20px;
    }
    
    .modal-content {
      background-color: white;
      border-radius: var(--border-radius);
      box-shadow: var(--box-shadow);
      width: 100%;
      max-width: 500px;
      overflow: hidden;
    }
    
    .modal-header {
      background-color: var(--primary-color);
      color: white;
      padding: 15px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .modal-header h5 {
      font-weight: 500;
      font-size: 18px;
    }
    
    .close {
      color: white;
      font-size: 22px;
      font-weight: bold;
      cursor: pointer;
    }
    
    .close:hover {
      opacity: 0.8;
    }
    
    .modal-body {
      padding: 25px 20px;
    }
    
    .modal-footer {
      padding: 15px 20px;
      background-color: #f8f9fa;
      display: flex;
      justify-content: flex-end;
      gap: 10px;
    }
    
    footer {
      margin-top: 30px;
      text-align: center;
      color: #6c757d;
      font-size: 13px;
    }
    
    footer strong {
      color: var(--primary-color);
      font-weight: 600;
    }
    
    /* Responsive adjustments */
    @media (max-width: 576px) {
      .card-body {
        padding: 25px 20px;
      }
      
      .modal-content {
        margin: 0 10px;
      }
      
      .modal-footer {
        flex-direction: column;
      }
      
      .btn-primary, .btn-secondary {
        width: 100%;
      }
    }