#file-preview {
    position: fixed;
    max-width: 400px;
    max-height: 1000px;
    border: 1px solid #ccc;
    background-color: #f9f9f9;
    padding: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: none;
    transition: width 0.2s ease, height 0.2s ease, transform 0.05s ease;
    z-index: 9999;
}

#file-preview iframe,
#file-preview img,
#file-preview video,
#file-preview audio {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

#file-preview iframe {
    width: 100%;
    height: 100%;
    max-height: 500px;
    border: none;
}

@media (prefers-color-scheme: dark) {
    #file-preview {
        background-color: #1e1e1e;
        border-color: #444;
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    }
}