Ability to customize the layout of a collection Detail Page

[AlexVanK]

Hello all,

I have looked everywhere but can't seem to find a place/documentation piece on how to manipulate/customize the view of a collection's detail page.

I would like to be able to organize fields in a visual manner. This page is going to be very large, and I would like to group/tag/color-code or any other way or organizing the fields to increase the data-entry user experience.

So far I have been able to use the third column in the CSS grid, but I had to resort to a wacky JavaScript hack... (see pic below).
Any other ideas on how to customize this layout?