body {
      user-select: none; /* Disable text selection */
    }

    .logo {
      display: flex;
      justify-content: center;
      align-items: center;
      margin: 20px auto; /* Center logo horizontally and add margin */
    }

    /* Loader CSS */
    .loader-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.5);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 1000;
      display: none; /* Hide by default */
    }

    .loader {
      border: 4px solid #f3f3f3; /* Light grey */
      border-top: 4px solid #3498db; /* Blue */
      border-radius: 50%;
      width: 40px;
      height: 40px;
      animation: spin 1s linear infinite;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    /* Hide button text when loading */
    .button-with-loader.loading .button-text {
      visibility: hidden;
    }