body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background-color: #f4f7f9;
      color: #333;
      line-height: 1.6;
      margin: 0;
      padding: 20px;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      -webkit-user-select: none;
      /* Safari */
      -ms-user-select: none;
      /* IE 10+ */
      user-select: none;
      /* Standard */
  }

  .container {
      max-width: 800px;
      width: 100%;
      margin: 0 auto;
      background: #fff;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  }

  h1,
  h2,
  h3 {
      color: #005a9c;
      border-bottom: 2px solid #e1e1e1;
      padding-bottom: 10px;
      margin-top: 0;
  }

  h1 {
      text-align: center;
      margin-bottom: 30px;
  }

  h3 {
      text-align: center;
      border-bottom: none;
      margin-bottom: 10px;
      font-weight: normal;
  }

  .presentation-page h1 {
      margin-bottom: 5px;
  }

  .presentation-page p,
  .presentation-page ul {
      margin-bottom: 20px;
  }

  .presentation-page ul {
      padding-left: 20px;
  }

  fieldset {
      border: 1px solid #ccc;
      border-radius: 8px;
      padding: 20px;
      margin-bottom: 25px;
  }

  legend {
      font-weight: bold;
      font-size: 1.2em;
      padding: 0 10px;
      color: #333;
  }

  .question-group div {
      margin-bottom: 10px;
  }

  input[type="radio"] {
      margin-right: 10px;
  }

  label {
      cursor: pointer;
      display: inline-block;
      padding: 5px;
  }

  .hidden {
      display: none !important;
  }

  .question-step {
      display: none;
  }

  .question-step.active {
      display: block;
  }

  .navigation-buttons {
      display: flex;
      justify-content: space-between;
      margin-top: 30px;
      gap: 15px;
  }

  .btn {
      padding: 12px 25px;
      font-size: 1.1em;
      font-weight: bold;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      text-align: center;
  }

  #results-page .btn,
  #save-modal .btn,
  #start-btn {
      flex-grow: 1;
  }

  #prev-btn,
  #restart-btn,
  #modal-cancel-btn {
      background-color: #6c757d;
      color: white;
  }

  #next-btn,
  #start-btn,
  #save-btn {
      background-color: #007bff;
      color: white;
  }

  #next-btn:disabled {
      background-color: #a0c7ff;
      cursor: not-allowed;
  }

  #submit-btn,
  #modal-confirm-btn {
      background-color: #28a745;
      color: #fff;
      flex-grow: 1;
  }

  .text-center {
      text-align: center;
  }

  .footer-note {
      text-align: center;
      margin-top: 30px;
      font-style: italic;
      color: #666;
  }

  #results-page h2 {
      text-align: center;
  }

  .results-summary {
      border: 1px solid #ddd;
      border-radius: 8px;
      padding: 20px;
      margin-top: 20px;
      background-color: #f8f9fa;
  }

  .summary-header {
      text-align: center;
      margin-bottom: 30px;
      padding-bottom: 20px;
      border-bottom: 2px solid #005a9c;
  }

  .summary-header h3 {
      color: #005a9c;
      margin-bottom: 15px;
      border: none;
  }

  .score-card {
      background: white;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      text-align: center;
      margin: 20px auto;
      max-width: 400px;
  }

  .score-card h4 {
      color: #333;
      margin: 0 0 15px 0;
      font-size: 1.1em;
  }

  .score-card .score-value {
      font-size: 2em;
      font-weight: bold;
      margin: 10px 0;
      color: #007bff;
  }

  .score-card .interpretation {
      font-size: 1em;
      margin-top: 10px;
      padding: 8px;
      border-radius: 5px;
      font-weight: 600;
  }

  .interpretation.normal {
      background-color: #d4edda;
      color: #155724;
  }

  .interpretation.mci {
      background-color: #fff3cd;
      color: #856404;
  }

  .detailed-results {
      margin-top: 30px;
  }

  .detailed-results h3 {
      color: #005a9c;
      border-bottom: 2px solid #005a9c;
      padding-bottom: 10px;
      margin-bottom: 20px;
  }

  .questions-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 15px;
  }

  .questions-table th {
      background-color: #005a9c;
      color: white;
      padding: 12px;
      text-align: left;
      font-weight: 600;
  }

  .questions-table td {
      padding: 12px;
      border-bottom: 1px solid #e1e1e1;
  }

  .questions-table tr:last-child td {
      border-bottom: none;
  }

  .questions-table tr:nth-child(even) {
      background-color: #f8f9fa;
  }

  .questions-table .question-col {
      width: 50%;
      font-weight: 500;
  }

  .questions-table .response-col {
      width: 40%;
  }

  .questions-table .score-col {
      width: 10%;
      text-align: center;
      font-weight: bold;
      color: #005a9c;
  }

  .info-note {
      font-size: 0.9em;
      color: #555;
      margin-top: 25px;
      background-color: #f8f9fa;
      padding: 15px;
      border-radius: 5px;
      border-left: 5px solid #6c757d;
  }

  .modal-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.6);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 1000;
  }

  .modal-content {
      background: white;
      padding: 30px;
      border-radius: 10px;
      width: 90%;
      max-width: 500px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  }

  .modal-content h2 {
      margin-top: 0;
  }

  .modal-form-group {
      margin-bottom: 15px;
  }

  .modal-form-group label {
      display: block;
      font-weight: bold;
      margin-bottom: 5px;
  }

  .modal-form-group input[type="text"] {
      width: 100%;
      padding: 10px;
      border: 1px solid #ccc;
      border-radius: 5px;
      box-sizing: border-box;
  }

  .modal-checkbox-group {
      display: flex;
      gap: 20px;
      margin-bottom: 20px;
  }

  .id-warning {
      font-size: 0.8em;
      color: #e74c3c;
      background-color: #fdf2f2;
      padding: 10px;
      border-radius: 5px;
      border-left: 4px solid #e74c3c;
      margin-top: 10px;
  }

  .reference-table {
      margin: 20px 0;
      background: white;
      padding: 15px;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  .reference-table table {
      width: 100%;
      border-collapse: collapse;
  }

  .reference-table th,
  .reference-table td {
      padding: 10px;
      text-align: left;
      border-bottom: 1px solid #e1e1e1;
  }

  .reference-table th {
      background-color: #e9f5ff;
      color: #005a9c;
      font-weight: bold;
  }

  .reference-table tr:last-child td {
      border-bottom: none;
  }