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

    # API reverse-proxy — upstream name "api" resolves in the compose network.
    location /api/ {
        proxy_pass http://api:8080;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    location /connect/ {
        proxy_pass http://api:8080;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
    }

    location /health {
        proxy_pass http://api:8080;
    }

    # SPA fallback — all other routes return index.html
    location / {
        try_files $uri $uri/ /index.html;
    }
}