.folder-icon {
    color: #ffd700;
}

.file-icon {
    color: #6c757d;
}

.item-link {
    text-decoration: none;
    color: inherit;
    flex-grow: 1;
    margin-right: 1rem;
}

.item-link:hover {
    filter: brightness(0.5); /* 加深颜色 */
    /* filter: brightness(1.2); 变浅颜色 */
}

.list-group-item {
    transition: background-color 0.2s;
}



.card {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.modal-content {
    border-radius: 0.5rem;
}

.btn {
    border-radius: 0.25rem;
}

.form-control {
    border-radius: 0.25rem;
}
.drop-zone {
    border: 2px dashed #ccc;
    border-radius: 4px;
    padding: 20px;
    text-align: center;
    background: #f8f9fa;
    transition: all 0.3s ease;
}
.drop-zone.dragover {
    background: #e9ecef;
    border-color: #0d6efd;
}
.item-actions {
    display: none;
}
.list-group-item:hover .item-actions {
    display: block;
}