diff --git a/.gitignore b/.gitignore
index bbbced1..97c990e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,6 +30,8 @@ assets/node_modules/
 # Vendored reference repos (not part of the package)
 vendor/
 
-# Storybook dev-harness assets: Tailwind-built CSS is a build artifact
-# (source is assets/css/storybook.css). The static JS bundle is committed.
+# Storybook dev-harness assets: both the Tailwind-built CSS and the esbuild-built
+# JS bundle are build artifacts. Sources live in assets/css/storybook.css and
+# assets/js/storybook.js (which imports the TS hooks in assets/ts/).
 /priv/static/assets/css/storybook.css
+/priv/static/assets/js/storybook.js
diff --git a/assets/js/storybook.js b/assets/js/storybook.js
new file mode 100644
index 0000000..17f1218
--- /dev/null
+++ b/assets/js/storybook.js
@@ -0,0 +1,3 @@
+import { Hooks } from "../ts/index.ts";
+
+window.storybook = { Hooks, Params: {}, Uploaders: {} };
diff --git a/assets/ts/dialog.ts b/assets/ts/dialog.ts
new file mode 100644
index 0000000..aa12a5d
--- /dev/null
+++ b/assets/ts/dialog.ts
@@ -0,0 +1,38 @@
+interface DialogHook {
+  el: HTMLElement;
+  mounted(): void;
+  destroyed(): void;
+}
+
+const FOCUSABLE =
+  'a[href],area[href],input:not([disabled]),select:not([disabled]),textarea:not([disabled]),button:not([disabled]),[tabindex]:not([tabindex="-1"])';
+
+export const ShadixDialog = {
+  mounted(this: DialogHook) {
+    const el = this.el;
+    let restoreTo: HTMLElement | null = null;
+
+    const open = () => {
+      restoreTo = document.activeElement as HTMLElement | null;
+      document.body.style.overflow = "hidden";
+      window.requestAnimationFrame(() => {
+        const content = el.querySelector<HTMLElement>('[role="dialog"]');
+        const first = content?.querySelector<HTMLElement>(FOCUSABLE);
+        (first ?? content)?.focus();
+      });
+    };
+
+    const close = () => {
+      document.body.style.overflow = "";
+      restoreTo?.focus();
+      restoreTo = null;
+    };
+
+    el.addEventListener("shadix:dialog-open", open);
+    el.addEventListener("shadix:dialog-close", close);
+  },
+
+  destroyed(this: DialogHook) {
+    document.body.style.overflow = "";
+  },
+};
diff --git a/assets/ts/index.ts b/assets/ts/index.ts
new file mode 100644
index 0000000..69a1b46
--- /dev/null
+++ b/assets/ts/index.ts
@@ -0,0 +1,3 @@
+import { ShadixDialog } from "./dialog";
+
+export const Hooks = { ShadixDialog };
diff --git a/assets/tsconfig.json b/assets/tsconfig.json
new file mode 100644
index 0000000..eb8c6c2
--- /dev/null
+++ b/assets/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "noEmit": true,
+    "skipLibCheck": true,
+    "lib": ["ES2022", "DOM", "DOM.Iterable"]
+  },
+  "include": ["ts/**/*.ts"]
+}
diff --git a/config/config.exs b/config/config.exs
index 49e4aa3..b06fda2 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -12,6 +12,18 @@ config :tailwind,
     cd: Path.expand("..", __DIR__)
   ]
 
+# esbuild bundles the storybook JS entrypoint (assets/js/storybook.js), which
+# imports the TypeScript LiveView hooks (assets/ts/*), into the static JS bundle
+# served by the dev harness. The built file is a build artifact (gitignored).
+config :esbuild,
+  version: "0.23.0",
+  storybook: [
+    args:
+      ~w(js/storybook.js --bundle --format=iife --target=es2022 --outdir=../priv/static/assets/js),
+    cd: Path.expand("../assets", __DIR__),
+    env: %{"NODE_PATH" => Path.expand("../deps", __DIR__)}
+  ]
+
 if File.exists?(Path.join(__DIR__, "#{config_env()}.exs")) do
   import_config "#{config_env()}.exs"
 end
diff --git a/mix.exs b/mix.exs
index 71fdc44..0255cb2 100644
--- a/mix.exs
+++ b/mix.exs
@@ -52,7 +52,7 @@ defmodule Shadix.MixProject do
 
   defp aliases do
     [
-      "assets.build": ["tailwind storybook"],
+      "assets.build": ["tailwind storybook", "esbuild storybook"],
       dev: ["run --no-halt dev.exs"]
     ]
   end
diff --git a/priv/static/assets/js/storybook.js b/priv/static/assets/js/storybook.js
deleted file mode 100644
index e8b6b3e..0000000
--- a/priv/static/assets/js/storybook.js
+++ /dev/null
@@ -1,3 +0,0 @@
-// Minimal storybook JS bundle. Shadix components have no LiveView hooks yet, so
-// empty registries suffice. Loaded immediately before phoenix_storybook's own JS.
-window.storybook = { Hooks: {}, Params: {}, Uploaders: {} };