body {
    font-family: Arial, sans-serif;
    overflow-y: scroll;
}
#file-tree {
    margin-top: 20px;
}
ul {
    list-style-type: none;
}
li {
    padding: 5px 0;
    display: flex;
    align-items: center;
}
li button {
    margin-left: 10px;
}
.file-info {
    flex-grow: 1;
    padding-left: 5px;
}
.preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    overflow-y: auto;
    padding: 20px;
}
.preview-content {
    background: white;
    padding: 20px;
    border-radius: 5px;
    max-width: 90%;
    max-height: 90vh;
    overflow: auto;
    position: relative;
}
img {
    max-width: 100%;
    max-height: 400px;
    display: block;
    margin: 0 auto;
}
.upload-item {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
}
.progress-bar {
    width: 200px;
    height: 20px;
    border: 1px solid #ccc;
    margin-left: 10px;
    overflow: hidden;
    border-radius: 3px;
}
.progress-bar-fill {
    height: 100%;
    width: 0;
    background-color: #4CAF50;
    transition: width 0.1s;
}
#batch-actions button {
    margin-right: 10px;
    padding: 8px 15px;
}
.preview-controls {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 90%;
    margin-top: 10px;
    margin-bottom: 10px;
}
.preview-controls button {
    padding: 10px 20px;
    font-size: 16px;
}