server_tokens off;
charset utf-8;

server {
    listen 80;
    server_name _;
    root /usr/share/nginx/html;
    index 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;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

    # Cache static assets (CSS/JS/images/fonts)
    location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot|mp4|webm)$ {
        expires 30d;
        add_header Cache-Control "public, immutable";
    }

    # Multi-page (not SPA): try exact file, then .html fallback (friendly URLs), then 404.
    # NEVER fallback to index.html — that masks 404s for a multi-entry design shelf.
    location / {
        try_files $uri $uri/ $uri.html =404;
    }
}