Chaning the WP directory/Error 404

hello everyone,

i apologize in advance for the rookie question and if i am not using the right terms.

i have a blog on wordpress.org. a few minutes ago (god knows why) i poked around in the settings and i changed the name of the WP directory. i changed it back immediately and i updated the reversed settings, however ever since the blog shows only text, no theme. i can login by typing the login url, but once i log in, i see only text, no dashboard or anything resembling wordpress.

please help.