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

    # Securite minimale
    server_tokens off;
    add_header X-Content-Type-Options nosniff always;
    add_header X-Frame-Options DENY always;
    add_header Referrer-Policy strict-origin-when-cross-origin always;

    # Cache court pour pouvoir iterer rapidement sur la page (1h)
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "public, max-age=3600, must-revalidate";
    }

    # Logo : cache plus long (1 jour)
    location ~* \.(png|jpg|svg|ico)$ {
        expires 1d;
        add_header Cache-Control "public, max-age=86400";
    }

    # Endpoint healthcheck simple
    location = /healthz {
        access_log off;
        return 200 "ok\n";
        add_header Content-Type text/plain;
    }
}