diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..0c784bd
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,3 @@
+PUBLIC_RELAY_URL=ws://localhost:3334
+PUBLIC_GROUP_ID=mygrouprandomid
+PUBLIC_MODE=simple   # simple | full
diff --git a/src/lib/config.ts b/src/lib/config.ts
new file mode 100644
index 0000000..0325f3c
--- /dev/null
+++ b/src/lib/config.ts
@@ -0,0 +1,10 @@
+import {
+  PUBLIC_RELAY_URL,
+  PUBLIC_GROUP_ID,
+  PUBLIC_MODE,
+} from "$env/static/public";
+
+export const RELAY_URL = PUBLIC_RELAY_URL;
+export const GROUP_ID = PUBLIC_GROUP_ID;
+export const MODE: "simple" | "full" =
+  PUBLIC_MODE === "full" ? "full" : "simple";
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 6d9f81c..7ef51d7 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -7,11 +7,11 @@
   import { page } from "$app/state";
   import { onMount } from "svelte";
   import { restoreSession } from "$lib/auth.svelte";
+  import { MODE } from "$lib/config";
 
   let { children } = $props();
 
-  // In full mode, extract active room from the URL
-  const mode: "simple" | "full" = "full";
+  const mode = MODE;
   const chatEnabled = true;
 
   onMount(restoreSession);