nginx.conf

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;

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

    # ── SPA routing: all routes fall back to index.html ───────────────
    location / {
        try_files $uri $uri/ /index.html;
    }

    # ── Cache: hashed JS/CSS/font assets (Vite adds content hashes) ──
    location ~* \.(js|css|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # ── Cache: images ─────────────────────────────────────────────────
    location ~* \.(png|jpg|jpeg|gif|ico|svg|webp)$ {
        expires 30d;
        add_header Cache-Control "public, max-age=2592000";
    }

    # ── No-cache: HTML (always fetch fresh) ───────────────────────────
    location ~* \.html$ {
        expires -1;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }
}