server {
    listen 3000;
    root /usr/share/nginx/html;
    index index.html;

    # SPA fallback: rimanda tutto a index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Cache aggressiva per assets (hash nel nome del file)
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, no-transform";
    }

    # Nessuna cache per index.html
    location = /index.html {
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;
    gzip_min_length 1000;
}