Permalinks -- How can I hide ' wp-longin.php ' and ' listcat ' in the URL ?

Hi,

1- I set the permalink using www.domain.com/%postname% / and it's work well except for all categories, i have 'listcat' include in the URL like : www.domain.com/listcat/category-name/.
How can I hide 'liscat' or replace it to my own word like :
www.domain.com/category-name/ or www.domain.com/new-word/category-name/

2-In the menu , if i have sub-categories, is it possible to have an URL like :
www.domain.com/category-name/sub-category/

3-Actually,the login URL is www.domain.com/wp-login.php?action=login.
How can I hide this file name or replace it with a word like :
www.domain.com/login/
because of security, i think it's better to not show file name.

Thank you for your support

 

Any help ???

 

It is not possible to hide listcat from site url. It will break site link.