# Security headers
<IfModule mod_headers.c>
    Header set X-Content-Type-Options "nosniff"
    Header set X-Frame-Options "SAMEORIGIN"
    Header set X-XSS-Protection "1; mode=block"
</IfModule>

# Block access to sensitive directories
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteRule ^includes/ - [F,L]
    RewriteRule ^sql/ - [F,L]
    RewriteRule ^vendor/ - [F,L]
</IfModule>