Classic Theme Redirect

I was looking at various themes that were installed in my wordpress theme page. I clicked on twenty ten, twenty eleven and twenty twelve with no problems. Then, when I clicked on Classic (which I had never clicked on before, it took me to a page which had, simply, the word “Password” in the upper left, with a box to fill in a password, and then an X. I filled in my site password, and clicked, and was kept on the same page with nothing happening. Now I can’t get back to my site, as I keep getting redirected away from my usual login URL. So I am unable to access my site at all! What do I do to get back to my site?? Thank you! Here is my login URL:

I did not set a redirect address. Here is the redirect address that I am getting: https://danielmarkpicturepoems.com/wp-login.php?redirect_to=http%3A%2F%2Fwww.danielmarkpicturepoems.com%2Fwp-admin%2Findex.php&reauth=1

Have I been hacked?

(I should mention that the site is now in Maintenance Mode and should not be visible.)