RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} .
RewriteCond %{HTTP_HOST} ^www.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]
RewriteCond %{HTTPS} !=on [OR]
RewriteCond %{SERVER_PORT} !^443
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]