body {
    font-family: Arial, sans-serif;
    margin: 20px;
}
.preview-container {
    margin-top: 20px;
    max-width: 100%;
    display: flex;
    justify-content: center;
}
.text-preview {
    white-space: pre-wrap;
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
}
.image-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: calc(100vh - 130px);
}
.image-preview img {
    max-width: 100%;
    height: auto;
    max-height: 80vh;
}
.pdf-preview {
    width: 100%;
    height: 800px;
    border: 1px solid #ddd;
}
.video-preview {
    width: 100%;
    max-width: 80vw;
    display: flex;
    align-items: center;
    justify-content: center;
    height: calc(100vh - 160px);
}
.video-preview video {
    width: 100%;
    height: auto;
}
.office-preview {
    width: 100%;
    height: auto;
    box-sizing: border-box;    
    border: 1px solid #ddd;
    padding: 20px;
    background: white;
}
.download-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin: 10px 0;
}
.preview-error {
    padding: 20px;
    color: #856404;
}
#excel-preview {
    width: 100%;
    overflow-x: auto;
}
.spreadsheet-table {
    border-collapse: collapse;
    width: 100%;
}
.spreadsheet-table td, .spreadsheet-table th {
    border: 1px solid #ddd;
    padding: 8px;
}
.word-preview img {
  width: 100%;
  height: auto;
}