server {
    listen 80;
    server_name _;
    root /var/www/html;
    index index.html;

    # API requests → .NET backend
    location /api/ {
        proxy_pass http://localhost:5000;
        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;
    }

    # Health check
    location /health {
        proxy_pass http://localhost:5000;
    }

    # Swagger (dev only, but harmless)
    location /swagger {
        proxy_pass http://localhost:5000;
    }

    # SPA fallback
    location / {
        try_files $uri $uri/ /index.html;
    }
}