[Feature Request]: Page Navigation titles hierarchy guiding lines

[yodabeto]

Describe the feature you'd like

Adding vertical guiding lines to the different hierarchies in the page navigation titles so that a single vertical line runs all the way down from a higher hierarchy title to all the contained lower hierarchy titles.

Describe the benefits this would bring to existing BookStack users

Currently, the way Page Navigation works to differentiate title hierarchy is by creating a wider gap when the title is lower in hierarchy. Right now it is very difficult to differentiate which titles/sections are under which other because the gaps all seem the same size. The guiding line can help easily see which titles are contained within another one of higher level hierarchy.

Can the goal of this request already be achieved via other means?

yes, other possible options would be just increasing the gap size for each hierarchy(so that it is easier to see the difference) or adding foldable titles here too but I'm not sure how well this fits with bookstack design choices. The very minimum I got to mind is the vertical lines, but really anything that makes it easier to see what titles are under each other besides just the minimal gap sizes could works. Currently I find the gaps difference between title hierarchies so small that it makes difficult to clearly see which ones are under which others.

Have you searched for an existing open/closed issue?

• [x] I have searched for existing issues and none cover my fundamental request

How long have you been using BookStack?

3 months to 1 year

Additional context

An example of how difficult it is to differentiate hierarchies once the sub levels increase in complexity: