/* Preloader styles */
  #preloader {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: #ffffff;
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 9999;
      transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
  }

  #preloader.preloader-hidden {
      opacity: 0;
      visibility: hidden;
  }

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

  .spinner {
      width: 50px;
      height: 50px;
      border: 5px solid #f3f3f3;
      border-top: 5px solid #3498db;
      border-radius: 50%;
      animation: spin 1s linear infinite;
      margin: 0 auto 20px;
  }

  .loading-text {
      color: #333;
      font-family: Arial, sans-serif;
      font-size: 16px;
  }

  @keyframes spin {
      0% {
          transform: rotate(0deg);
      }

      100% {
          transform: rotate(360deg);
      }
  }