server {
    listen 80;
    root /usr/share/nginx/html;
    index index.html;

    # SPA routing — return index.html for all non-file routes
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Proxy API calls to the backend container
    # Use Docker's internal DNS resolver so upstream resolves at request time
    resolver 127.0.0.11 valid=10s;
    set $api http://api:3001;
    location /api/ {
        proxy_pass         $api/;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_set_header   X-Forwarded-For   $proxy_add_x_forwarded_for;
    }
}