nginx.conf

server {
    listen 80;
    server_name _;

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

    # Gzip compression
    gzip on;
    gzip_types text/plain text/css application/json application/javascript
               text/xml application/xml application/xml+rss text/javascript
               image/svg+xml font/woff2;
    gzip_min_length 1024;
    gzip_comp_level 6;

    # Cache static assets aggressively
    location ~* \.(js|css|woff2|woff|ttf|ico|png|jpg|jpeg|svg|webp|gif)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

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

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    # Hide nginx version
    server_tokens off;
}