server {
    listen 80;
    server_name localhost;
    root /static-files;
    
    location / {
        # Handle preflight requests first
        if ($request_method = 'OPTIONS') {
            add_header Access-Control-Allow-Origin "*" always;
            add_header Access-Control-Allow-Methods "GET, POST, OPTIONS" always;
            add_header Access-Control-Allow-Headers "Origin, Content-Type, Accept, Authorization" always;
            add_header Access-Control-Max-Age 3600 always;
            return 204;
        }
        
        # Serve static files
        try_files $uri $uri/ =404;
        
        # Add CORS headers for actual requests
        add_header Access-Control-Allow-Origin "*" always;
        add_header Access-Control-Allow-Methods "GET, POST, OPTIONS" always;
        add_header Access-Control-Allow-Headers "Origin, Content-Type, Accept, Authorization" always;
        
        # Set proper content type for markdown files
        location ~* \.md$ {
            add_header Content-Type "text/markdown; charset=utf-8";
        }
    }
}