Templates for all pages?

I’m sorry but after all these years of trying to tweak and adjust my site’s pages and albums, it occurred to me that, in order to get full control of these areas, I might have to create basic templates for all or most of them. Right now, I am using a template called “Pages-pideja” for all the site. Then, I have “Galeries-pideja” and “Album-pideja” templates for those sections but they are based on the “Pages-pideja” template. Witch makes that a change in the “About” page (padding, for example) will reflect all thru the site pages. So, having individual templates for all the sections might seem logical.
Am I making any sense, here?

pideja.ca

That sounds like it would be very difficult to manage. Any global changes to the site would require updating multiple templates.
You mention the padding on the Contact page, but don’t you also have to manage the padding on that page for mobile devices using custom css?

Seems to me that it might be easier to use one page template and manage differences by targeting different template types (like album set template and album templates) with custom css using the body classes.