# Enable URL rewriting
RewriteEngine On

# 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"

# Prevent access to sensitive files
<Files "*.json">
    <RequireAll>
        Require all denied
    </RequireAll>
</Files>

# Allow access to question files
<Files "buyer_questions.json">
    <RequireAll>
        Require all granted
    </RequireAll>
</Files>

<Files "seller_questions.json">
    <RequireAll>
        Require all granted
    </RequireAll>
</Files>

<Files "buyer_questions_bg.json">
    <RequireAll>
        Require all granted
    </RequireAll>
</Files>

<Files "seller_questions_bg.json">
    <RequireAll>
        Require all granted
    </RequireAll>
</Files>

# Protect responses directory
<Directory "responses">
    <RequireAll>
        Require all denied
    </RequireAll>
</Directory>

# Allow PHP to access responses directory
<Files "responses/*.json">
    <RequireAll>
        Require all denied
    </RequireAll>
</Files>

# Enable compression
<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/html
    AddOutputFilterByType DEFLATE text/xml
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE application/xml
    AddOutputFilterByType DEFLATE application/xhtml+xml
    AddOutputFilterByType DEFLATE application/rss+xml
    AddOutputFilterByType DEFLATE application/javascript
    AddOutputFilterByType DEFLATE application/x-javascript
</IfModule>

# Cache static assets
<IfModule mod_expires.c>
    ExpiresActive on
    ExpiresByType text/css "access plus 1 year"
    ExpiresByType application/javascript "access plus 1 year"
    ExpiresByType image/png "access plus 1 year"
    ExpiresByType image/jpg "access plus 1 year"
    ExpiresByType image/jpeg "access plus 1 year"
    ExpiresByType image/gif "access plus 1 year"
    ExpiresByType image/svg+xml "access plus 1 year"
</IfModule>

# Prevent directory listing
Options -Indexes

# Handle 404 errors
ErrorDocument 404 /index.php
