You will likely need a plugin for this, as it’s a common WordPress issue, not related to the theme in any way.
You will need to change logo for login page. More tricky to hide the fact the URL shows wp-admin in the URL.
WPMU has some good plugins for this kind of thing. Also check the wordpress.org plugin repository.
Basically you should do Google search and explore various options for changing the WordPress experience as it can be a little complex. We did this for couple of sites, and then that broke with WP 3.9 (sigh).
Anyway, you may find various posts online like this one useful:
http://www.jasonbobich.com/wordpress/hiding-the-wordpress-admin-panel-to-your-subscribers/
Another kind soul here may have better more specific answer for you, but this is part of learning to use WordPress for webdev. Again your query not related to the theme or theme support, as “hiding wordpress” is part of modifying the wordpress functionality, but perhaps the above might have helped in some way.
We used to use a plugin which would hide various things in the layout, based on “user roles” where superuser could see everything, but moat others would not see any of the WordPress stuff.
@adhi
hiding the toolbar top of page is easy; but not hiding all the admin functions, dashboard, footers, and other elements that say “WordPress.” This can only be done via user roles and a plugin which hacks the various elements to remove the stuff like “Thank you for creating with WordPress” bottom of the page; or hiding all the stuff in the left sidebar based on user level.
I FOUND the plugin we were using for this very task, and it is this:
https://wordpress.org/plugins/white-label-cms/
Great Mr. Christo…
or may be you can use plugin “User Access Manager” any feature Hide wp dsb and
many features.. like as :
User groups
Set separate access for readers and editors
Set access by user groups
Set access by post categories
User-defined post/page title (if no access)
User-defined post/page text (if no access)
Optional login form (if no access)
User-defined comment text (if no access)
Hide complete post/page
Hide pages in navigation
Redirecting users to other pages (if no access)
Recursive locking of posts/pages
Limited access to uploaded files
Full integrated at the admin panel
Multilanguage support
Also proteced your rss feeds
Give access by IP-address