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

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

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

    # Immutable cache for hashed assets (Vite adds content hashes)
    location ~* \.(js|css|woff2?)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    location ~* \.(png|jpg|jpeg|gif|svg|ico|webp)$ {
        expires 30d;
        add_header Cache-Control "public";
    }
}