You'll need to log in to switch to dark theme and see that. Light theme will probably be tweaked; I'm not satisfied with inbox notification colours, post author and sub colours and a few other little things. Dark theme looks fine.
Post pages, inbox, welcome page, TOS page etc. do not have styles but the main styles from the frontpage can easily be applied to most of the other pages. 75% of the CSS is probably finished, it's mostly just small adjustments now. Classes on the New Layout™ are a lot simpler and I think it will be easier for mods to apply CSS on subs now. Headers, for example, are a nightmare to get right on the current layout, so much so that I actually just got rid of them on a couple of my sub stylesheets rather than fuck around.
If you have any serious suggestions for the CSS it would be helpful. Not like last time when the best suggestion was to make Phuks look like "a little girl's myspace page circa 2005".
The new layout isn't just a layout. The backend has been completely redone too. When it is finished, it will replace this one.
One of the issues with the current layout is it looks pretty bad on mobile. The new layout will hopefully be better when it is finished.
I am not happy with light theme either and it will be changed. There is also stuff that hasn't been added to the pages yet, which makes it look sort of empty in comparison. Is there anything in particular that bothers you about it? Aside from the margins.