diff --git a/nginx.conf b/nginx.conf
index 690108e..d15f0ba 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -85,6 +85,39 @@ http {
       proxy_set_header Upgrade websocket;
     }
 
+    # ====================== /server/ location ======================
+    location ~ "^/server/" {
+      # Preflight OPTIONS - handled by nginx (fast, no hit to Flask)
+      if ($request_method = 'OPTIONS') {
+        add_header 'Access-Control-Allow-Origin'      $allow_origin always;
+        add_header 'Access-Control-Allow-Credentials' 'true' always;
+        add_header 'Access-Control-Allow-Methods'     'GET, POST, PUT, DELETE, PATCH, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers'     'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization,X-CSRF-Token' always;
+        add_header 'Access-Control-Max-Age'           1728000 always;   # 20 days
+        add_header 'Content-Type'                     'text/plain; charset=utf-8';
+        add_header 'Content-Length'                   0;
+        return 204;
+      }
+
+      # Normal requests
+      limit_except DELETE GET POST PUT OPTIONS { deny all; }
+
+      add_header 'Access-Control-Allow-Origin'      $allow_origin always;
+      add_header 'Access-Control-Allow-Credentials' 'true' always;
+      add_header 'Access-Control-Allow-Methods'     'GET, POST, PUT, DELETE, PATCH, OPTIONS' always;
+      add_header 'Access-Control-Allow-Headers'     'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization,X-CSRF-Token' always;
+      add_header 'Access-Control-Expose-Headers'    'Content-Length,Content-Range' always;
+      add_header 'Vary'                             'Origin' always;
+
+      rewrite "^/server/(.*)" /$1 break;
+      proxy_pass http://localhost:3000;
+      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 $scheme;
+    }
+
     # Catch-all for anything else (optional, returns proper CORS even on 404)
     location / {
       if ($request_method = 'OPTIONS') {