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

    # Vite puts a content hash in these file names, so they never change.
    location /assets/ {
        add_header Cache-Control "public, max-age=31536000, immutable";
    }

    # Not in every nginx mime.types; browsers expect this type for the PWA manifest.
    location = /manifest.webmanifest {
        types { application/manifest+json webmanifest; }
        add_header Cache-Control "no-cache";
    }

    # index.html and /i18n/*.json keep their names across deploys. Without
    # no-cache the browser shows old translation keys or loads an old bundle.
    location / {
        index index.html index.htm;
        add_header Cache-Control "no-cache";

        # Handle React Router navigation
        try_files $uri $uri/ /index.html;
    }
}