[Theme: Responsive] Can't find post page .php

Hi

I’m setting up WordPress locally using the Responsive theme. While I do find the php files for all sections of the the theme, I can’t seem to find the file for the actual blog post page – the page you see when viewing a full post. The post is set up with a content/sidebar layout but that .php seems to edit pages and not posts.

Thanks for your time and help.