html, body {
      height: 100%;
      margin: 0;
      padding: 0;
    }
    
    body {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    .app-container {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
    }

    .card {
      background: white;
      border-radius: 16px;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
      padding: 40px;
      max-width: 500px;
      width: 100%;
    }

    .logo-section {
      text-align: center;
      margin-bottom: 30px;
    }

    .logo-icon {
      width: 60px;
      height: 60px;
      margin: 0 auto 15px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
    }

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

    label {
      display: block;
      margin-bottom: 8px;
      color: #333;
      font-weight: 600;
      font-size: 14px;
    }

    input, select {
      width: 100%;
      padding: 12px 14px;
      border: 2px solid #e5e7eb;
      border-radius: 8px;
      font-size: 14px;
      transition: all 0.3s ease;
      box-sizing: border-box;
    }

    input:focus, select:focus {
      outline: none;
      border-color: #667eea;
      box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }

    .btn {
      width: 100%;
      padding: 12px 20px;
      border: none;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-primary {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
      margin-top: 10px;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
    }

    .btn-secondary {
      background: #f3f4f6;
      color: #333;
      margin-top: 10px;
    }

    .btn-secondary:hover {
      background: #e5e7eb;
    }

    .error-message {
      color: #ef4444;
      font-size: 13px;
      margin-top: 5px;
    }

    .question-card {
      background: #f9fafb;
      padding: 20px;
      border-radius: 12px;
      margin-bottom: 20px;
      border-left: 4px solid #667eea;
    }

    .question-title {
      font-weight: 600;
      margin-bottom: 15px;
      color: #1f2937;
      font-size: 15px;
    }

    .radio-group {
      display: flex;
      gap: 15px;
    }

    .radio-option {
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      flex: 1;
    }

    .radio-option input[type="radio"] {
      width: 18px;
      height: 18px;
      cursor: pointer;
      margin: 0;
    }

    .radio-option label {
      margin: 0;
      font-weight: 500;
      cursor: pointer;
      font-size: 14px;
    }

    .progress-section {
      background: #f3f4f6;
      padding: 15px;
      border-radius: 8px;
      margin-bottom: 20px;
      text-align: center;
    }

    .progress-text {
      font-size: 13px;
      color: #6b7280;
      font-weight: 600;
    }

    .result-box {
      background: #f0fdf4;
      border: 2px solid #86efac;
      border-radius: 12px;
      padding: 20px;
      margin-bottom: 20px;
      text-align: center;
    }

    .result-title {
      color: #16a34a;
      font-weight: 700;
      font-size: 16px;
      margin-bottom: 8px;
    }

    .result-box-warning {
      background: #fdf0f0;
      border: 2px solid #ef8686;
      border-radius: 12px;
      padding: 20px;
      margin-bottom: 20px;
      text-align: center;
    }

    .result-title-warning {
      color: #a31616;
      font-weight: 700;
      font-size: 16px;
      margin-bottom: 8px;
    }

    .result-message {
      color: #4b5563;
      font-size: 14px;
      line-height: 1.6;
    }

    .navigation {
      display: flex;
      gap: 10px;
      margin-top: 20px;
    }

    .navigation button {
      flex: 1;
    }

    @keyframes slideIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .page {
      animation: slideIn 0.4s ease-out;
    }