RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.html [L]

# Security headers
Header always set X-Content-Type-Options nosniff
Header always set X-Frame-Options DENY
Header always set X-XSS-Protection "1; mode=block"
Header always set Referrer-Policy "strict-origin-when-cross-origin"

# Cache control
<filesMatch "\.(css|js|png|jpg|jpeg|gif|ico|svg)$">
  Header set Cache-Control "max-age=31536000, public"
</filesMatch>