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

    # Proxy /api and /events to the kua-mail backend
    location ~ ^/(api|events)(/.*)?$ {
        proxy_pass https://api.mail.kua.cl;
        proxy_set_header Host api.mail.kua.cl;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_buffering off;
        proxy_read_timeout 600s;
        # SSE support
        proxy_http_version 1.1;
        proxy_set_header Connection '';
        chunked_transfer_encoding on;
    }

    # SPA: all other routes → index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml image/svg+xml;
    gzip_min_length 1024;
}