I want to make all urls go to:

https://www.domain.com/page/var1/var2/ etc. (with all to https and all with trailing slash).

Also, I want index.php to receive all requests, despite the url being /page/variable/variable2 etc.

I have this, but none of it works. I must be doing something wrong.

RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} ^domain.com  
RewriteRule (.*) http://www.domain.com/$1 [R=301,L] 
RewriteCond %{HTTPS} off
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L]	

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L,NS]