.htaccess RewriteRules

Hi,

I’m quite new to WordPress and I’m looking at making my clients website more SEO friendly. The site has a search results page and I want the links on this page not to be in the format:

https://www.mysite.com/details.php?id=345
but rather
https://www.mysite.com/details/this-is-my-article

Current my .htaccess file allows me to have https://www.mysite.com/details/ but if I put an article name after this url it just relocates to the homepage.

I know I need to modify my WordPress .htaccess file to acheive this but I’m not sure how, heres my .htaccess file:

RewriteEngine On
RewriteBase /

#uploaded files
RewriteRule ^(.*/)?files/$ index.php [L]
RewriteRule ^(.*/)?files/(.*) wp-content/blogs.php?file=$2 [L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule . – [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-.*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

Could someone point me in the right direction on how to achieve this, i.e what I need to add to the file?

Regards,
Colin.