nginx/nginx.conf

server {
    listen 80;
    server_name _;

    # ── React SPA ─────────────────────────────────
    root /usr/share/nginx/html;
    index index.html;

    location / {
        try_files $uri $uri/ /index.html;
    }

    # ── FastAPI proxy ─────────────────────────────
    location /api/ {
        proxy_pass         http://api:8000/api/;
        proxy_http_version 1.1;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_set_header   X-Forwarded-For   $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Proto $scheme;
        proxy_read_timeout 120s;
        proxy_send_timeout 120s;
    }

    # ── FastAPI docs (optional) ───────────────────
    location /docs {
        proxy_pass         http://api:8000/docs;
        proxy_set_header   Host $host;
    }
    location /openapi.json {
        proxy_pass         http://api:8000/openapi.json;
        proxy_set_header   Host $host;
    }

    # ── Gzip ──────────────────────────────────────
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;
    gzip_min_length 256;
}