server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    # Proxy para API (mesma origem)
    location /api/ {
        proxy_pass http://api:3000;
        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 Authorization $http_authorization;
    }

    # SPA fallback: serve index.html para rotas desconhecidas
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Cache de assets por 7 dias (HTML não é cacheado)
    location /assets/ {
        expires 7d;
        add_header Cache-Control "public, max-age=604800, must-revalidate";
    }
}