body {
    font-family: Arial, sans-serif;
    padding: 20px;
  }
  #uploadContainer {
    margin-bottom: 20px;
  }
  #fileGrid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    max-width: 1000px;
  }
  .fileItem {
    width: 100%;
    height: 150px;
    border: 1px solid #ccc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    background-color: #f9f9f9;
    padding: 5px;
    box-sizing: border-box;
  }
  .fileItem img {
    max-width: 100%;
    max-height: 100%;
  }
  .pdfIcon {
    font-size: 40px;
  }
  #processingMsg {
    font-weight: bold;
    margin-top: 10px;
    color: blue;
  }