/* CSS Variables for Theming */
:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --secondary: #e5e7eb;
    --secondary-hover: #d1d5db;
    --text: #1f2937;
    --text-light: #6b7280;
    --error: #ef4444;
    --background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
    --card-bg: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --qr-foreground: #14b8a6; /* Teal for QR code */
    --qr-border: #99f6e4; /* Light teal for QR border */
  }
  
  /* Base Styles */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Inter', sans-serif;
    background: var(--background);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text);
  }
  
  /* Main Container */
  .main-container {
    width: 100%;
    max-width: 450px;
    padding: 1rem;
  }
  
  /* Card */
  .card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    text-align: center;
  }
  
  /* Typography */
  .title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
  }
  
  .subtitle {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
  }
  
  /* Form */
  .form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  
  .form-group {
    text-align: left;
  }
  
  label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 0.25rem;
    display: block;
  }
  
  .input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
  }
  
  .input-icon {
    position: absolute;
    left: 0.75rem;
    color: var(--text-light);
  }
  
  input, select {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 0.875rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    transition: var(--transition);
  }
  
  select {
    padding: 0.75rem 1rem;
  }
  
  input:focus, select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
  }
  
  .toggle-password {
    position: absolute;
    right: 0.75rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    font-size: 1rem;
  }
  
  .error-message {
    color: var(--error);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    display: block;
  }
  
  /* Buttons */
  .btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
  }
  
  .btn.primary {
    background: var(--primary);
    color: #ffffff;
  }
  
  .btn.primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
  }
  
  .btn.secondary {
    background: var(--secondary);
    color: var(--text);
  }
  
  .btn.secondary:hover {
    background: var(--secondary-hover);
    transform: translateY(-2px);
  }
  
  .btn:disabled {
    background: #d1d5db;
    cursor: not-allowed;
    transform: none;
  }
  
  /* QR Container */
  .qr-container {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
  }
  
  .qr-wrapper {
    background: #ffffff;
    padding: 1rem;
    border-radius: 12px;
    border: 2px solid var(--qr-border);
    box-shadow: var(--shadow);
    transition: transform 0.5s ease, opacity 0.5s ease;
    opacity: 0;
    transform: scale(0.8);
  }
  
  .qr-wrapper.visible {
    opacity: 1;
    transform: scale(1);
  }
  
  .qr-wrapper:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 12px -2px rgba(0, 0, 0, 0.15);
  }
  
  .qr-container canvas {
    display: block;
    border-radius: 8px;
  }
  
  .qr-caption {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-light);
    text-align: center;
  }
  
  /* Loading Animation */
  .loading {
    font-size: 0.875rem;
    color: var(--text-light);
  }
  
  .loading.hidden {
    display: none;
  }
  
  /* Credentials Preview */
  .credentials-preview {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    text-align: left;
  }
  
  /* Actions */
  .actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
  }
  
  /* Responsive Design */
  @media (max-width: 480px) {
    .main-container {
      padding: 0.5rem;
    }
  
    .card {
      padding: 1.5rem;
    }
  
    .title {
      font-size: 1.5rem;
    }
  
    .btn {
      padding: 0.75rem 1rem;
      font-size: 0.75rem;
    }
  
    .actions {
      flex-direction: column;
    }
  
    .qr-wrapper {
      padding: 0.75rem;
    }
  }