Your admin login screen appears to be fine. Of course, I can't log in to test anything there. But the screen is appearing to be functional.
The store area however seems to have some problems with displaying the main content area, stopping after displaying only the bottom of the left set of sideboxes. It would suggest that you have some bad or missing files for your sidebox templates, or for your page templates ... in your case, namely the "includes/templates/classic/templates" and "includes/templates/classic/sideboxes" files ... or perhaps even the /includes/modules/ files.
A clue as to "which" file might come from finding out in Admin->Tools->layout boxes what box is enabled after the "more information" box. On a fresh install, this is the "banners" sidebox. So, /includes/modules/sideboxes/banner_box.php may be bad, or the template for it may be bad ... includes/templates/template_default/sideboxes/tpl_banner_box.php (I mention template_default because it appears you've not customized anything yet, so won't have an override for that file yet).