diff --git a/app.py b/app.py
index 9be13bd..0c27e12 100644
--- a/app.py
+++ b/app.py
@@ -20,10 +20,22 @@ from bp import (
 async def federation_context() -> dict:
     """Federation app context processor."""
     from shared.infrastructure.context import base_context
+    from shared.services.navigation import get_navigation_tree
+    from shared.infrastructure.cart_identity import current_cart_identity
 
     ctx = await base_context()
 
-    # If user is logged in, check for ActorProfile
+    ctx["menu_items"] = await get_navigation_tree(g.s)
+
+    # Cart data (consistent with all other apps)
+    ident = current_cart_identity()
+    summary = await services.cart.cart_summary(
+        g.s, user_id=ident["user_id"], session_id=ident["session_id"],
+    )
+    ctx["cart_count"] = summary.count + summary.calendar_count + summary.ticket_count
+    ctx["cart_total"] = float(summary.total + summary.calendar_total + summary.ticket_total)
+
+    # Actor profile for logged-in users
     if g.get("user"):
         actor = await services.federation.get_actor_by_user_id(g.s, g.user.id)
         ctx["actor"] = actor
@@ -60,8 +72,7 @@ def create_app() -> "Quart":
     @app.get("/")
     async def home():
         from quart import render_template
-        stats = await services.federation.get_stats(g.s)
-        return await render_template("federation/home.html", stats=stats)
+        return await render_template("_types/federation/index.html")
 
     return app
 
diff --git a/templates/_types/federation/index.html b/templates/_types/federation/index.html
new file mode 100644
index 0000000..e2caacb
--- /dev/null
+++ b/templates/_types/federation/index.html
@@ -0,0 +1,3 @@
+{% extends '_types/root/_index.html' %}
+{% block meta %}{% endblock %}
+{% block content %}{% endblock %}
diff --git a/templates/_types/social/header/_header.html b/templates/_types/social/header/_header.html
new file mode 100644
index 0000000..df6aedb
--- /dev/null
+++ b/templates/_types/social/header/_header.html
@@ -0,0 +1,52 @@
+{% import 'macros/links.html' as links %}
+{% macro header_row(oob=False) %}
+  {% call links.menu_row(id='social-row', oob=oob) %}
+    <div class="w-full flex flex-row items-center gap-2 flex-wrap">
+      {% if actor %}
+        <nav class="flex gap-3 text-sm items-center flex-wrap">
+          <a href="{{ url_for('social.home_timeline') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 {% if request.path == url_for('social.home_timeline') %}font-bold{% endif %}">
+            Timeline
+          </a>
+          <a href="{{ url_for('social.public_timeline') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 {% if request.path == url_for('social.public_timeline') %}font-bold{% endif %}">
+            Public
+          </a>
+          <a href="{{ url_for('social.compose_form') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 {% if request.path == url_for('social.compose_form') %}font-bold{% endif %}">
+            Compose
+          </a>
+          <a href="{{ url_for('social.following_list') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 {% if request.path == url_for('social.following_list') %}font-bold{% endif %}">
+            Following
+          </a>
+          <a href="{{ url_for('social.followers_list') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 {% if request.path == url_for('social.followers_list') %}font-bold{% endif %}">
+            Followers
+          </a>
+          <a href="{{ url_for('social.search') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 {% if request.path == url_for('social.search') %}font-bold{% endif %}">
+            Search
+          </a>
+          <a href="{{ url_for('social.notifications') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 relative {% if request.path == url_for('social.notifications') %}font-bold{% endif %}">
+            Notifications
+            <span hx-get="{{ url_for('social.notification_count') }}" hx-trigger="load, every 30s" hx-swap="innerHTML"
+                  class="absolute -top-2 -right-3 text-xs bg-red-500 text-white rounded-full px-1 empty:hidden"></span>
+          </a>
+          <a href="{{ url_for('actors.profile', username=actor.preferred_username) }}"
+             class="px-2 py-1 rounded hover:bg-stone-200">
+            @{{ actor.preferred_username }}
+          </a>
+        </nav>
+      {% else %}
+        <nav class="flex gap-3 text-sm items-center">
+          <a href="{{ url_for('identity.choose_username_form') }}"
+             class="px-2 py-1 rounded hover:bg-stone-200 font-bold">
+            Choose username
+          </a>
+        </nav>
+      {% endif %}
+    </div>
+  {% endcall %}
+{% endmacro %}
diff --git a/templates/_types/social/index.html b/templates/_types/social/index.html
new file mode 100644
index 0000000..8eeed33
--- /dev/null
+++ b/templates/_types/social/index.html
@@ -0,0 +1,10 @@
+{% extends '_types/root/_index.html' %}
+{% block meta %}{% endblock %}
+{% block root_header_child %}
+  {% from '_types/root/_n/macros.html' import index_row with context %}
+  {% call index_row('social-header-child', '_types/social/header/_header.html') %}
+  {% endcall %}
+{% endblock %}
+{% block content %}
+  {% block social_content %}{% endblock %}
+{% endblock %}
diff --git a/templates/auth/check_email.html b/templates/auth/check_email.html
index 0a5c0d6..5eb1b61 100644
--- a/templates/auth/check_email.html
+++ b/templates/auth/check_email.html
@@ -1,4 +1,5 @@
-{% extends "federation/base.html" %}
+{% extends "_types/root/_index.html" %}
+{% block meta %}{% endblock %}
 {% block title %}Check your email — Rose Ash{% endblock %}
 {% block content %}
 <div class="py-8 max-w-md mx-auto text-center">
diff --git a/templates/auth/login.html b/templates/auth/login.html
index 5e9ca5a..79031e5 100644
--- a/templates/auth/login.html
+++ b/templates/auth/login.html
@@ -1,4 +1,5 @@
-{% extends "federation/base.html" %}
+{% extends "_types/root/_index.html" %}
+{% block meta %}{% endblock %}
 {% block title %}Login — Rose Ash{% endblock %}
 {% block content %}
 <div class="py-8 max-w-md mx-auto">
diff --git a/templates/federation/account.html b/templates/federation/account.html
index f541bc3..32c40a0 100644
--- a/templates/federation/account.html
+++ b/templates/federation/account.html
@@ -1,6 +1,6 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 {% block title %}Account — Rose Ash{% endblock %}
-{% block content %}
+{% block social_content %}
 <div class="py-8">
   <h1 class="text-2xl font-bold mb-4">Account</h1>
 
diff --git a/templates/federation/actor_timeline.html b/templates/federation/actor_timeline.html
index f7023d5..0c69f8a 100644
--- a/templates/federation/actor_timeline.html
+++ b/templates/federation/actor_timeline.html
@@ -1,8 +1,8 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 
 {% block title %}{{ remote_actor.display_name or remote_actor.preferred_username }} — Rose Ash{% endblock %}
 
-{% block content %}
+{% block social_content %}
 <div class="bg-white rounded-lg shadow-sm border border-stone-200 p-6 mb-6">
   <div class="flex items-center gap-4">
     {% if remote_actor.icon_url %}
diff --git a/templates/federation/base.html b/templates/federation/base.html
deleted file mode 100644
index 344bffe..0000000
--- a/templates/federation/base.html
+++ /dev/null
@@ -1,46 +0,0 @@
-<!doctype html>
-<html lang="en">
-<head>
-  <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>{% block title %}Rose Ash{% endblock %}</title>
-  <script src="https://cdn.tailwindcss.com"></script>
-  <script src="https://unpkg.com/htmx.org@1.9.12"></script>
-</head>
-<body class="bg-stone-50 text-stone-900 min-h-screen">
-  <nav class="bg-stone-800 text-white p-4">
-    <div class="max-w-4xl mx-auto flex items-center justify-between">
-      <a href="/" class="font-bold text-lg">Rose Ash</a>
-      <div class="flex items-center gap-4">
-        {% if g.user %}
-          {% if actor %}
-            <a href="{{ url_for('social.home_timeline') }}" class="hover:underline">Timeline</a>
-            <a href="{{ url_for('social.public_timeline') }}" class="hover:underline">Public</a>
-            <a href="{{ url_for('social.following_list') }}" class="hover:underline">Following</a>
-            <a href="{{ url_for('social.followers_list') }}" class="hover:underline">Followers</a>
-            <a href="{{ url_for('social.search') }}" class="hover:underline">Search</a>
-            <a href="{{ url_for('social.notifications') }}" class="hover:underline relative">
-              Notifications
-              <span hx-get="{{ url_for('social.notification_count') }}" hx-trigger="load, every 30s" hx-swap="innerHTML" class="absolute -top-2 -right-4"></span>
-            </a>
-            <a href="{{ url_for('actors.profile', username=actor.preferred_username) }}" class="hover:underline">
-              @{{ actor.preferred_username }}
-            </a>
-          {% else %}
-            <a href="{{ url_for('identity.choose_username_form') }}" class="hover:underline">Choose username</a>
-          {% endif %}
-          <form method="post" action="{{ url_for('auth.logout') }}" class="inline">
-            <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
-            <button type="submit" class="hover:underline">Logout</button>
-          </form>
-        {% else %}
-          <a href="{{ url_for('auth.login_form') }}" class="hover:underline">Login</a>
-        {% endif %}
-      </div>
-    </div>
-  </nav>
-  <main class="max-w-4xl mx-auto p-4">
-    {% block content %}{% endblock %}
-  </main>
-</body>
-</html>
diff --git a/templates/federation/choose_username.html b/templates/federation/choose_username.html
index b4543c3..259afb2 100644
--- a/templates/federation/choose_username.html
+++ b/templates/federation/choose_username.html
@@ -1,6 +1,6 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 {% block title %}Choose Username — Rose Ash{% endblock %}
-{% block content %}
+{% block social_content %}
 <div class="py-8 max-w-md mx-auto">
   <h1 class="text-2xl font-bold mb-2">Choose your username</h1>
   <p class="text-stone-600 mb-6">
diff --git a/templates/federation/compose.html b/templates/federation/compose.html
index 3fdfd05..d82a031 100644
--- a/templates/federation/compose.html
+++ b/templates/federation/compose.html
@@ -1,8 +1,8 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 
 {% block title %}Compose — Rose Ash{% endblock %}
 
-{% block content %}
+{% block social_content %}
 <h1 class="text-2xl font-bold mb-6">Compose</h1>
 
 <form method="post" action="{{ url_for('social.compose_submit') }}" class="space-y-4">
diff --git a/templates/federation/followers.html b/templates/federation/followers.html
index c436064..07eb862 100644
--- a/templates/federation/followers.html
+++ b/templates/federation/followers.html
@@ -1,8 +1,8 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 
 {% block title %}Followers — Rose Ash{% endblock %}
 
-{% block content %}
+{% block social_content %}
 <h1 class="text-2xl font-bold mb-6">Followers <span class="text-stone-400 font-normal">({{ total }})</span></h1>
 
 <div id="actor-list">
diff --git a/templates/federation/following.html b/templates/federation/following.html
index 1d8c678..ca900e4 100644
--- a/templates/federation/following.html
+++ b/templates/federation/following.html
@@ -1,8 +1,8 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 
 {% block title %}Following — Rose Ash{% endblock %}
 
-{% block content %}
+{% block social_content %}
 <h1 class="text-2xl font-bold mb-6">Following <span class="text-stone-400 font-normal">({{ total }})</span></h1>
 
 <div id="actor-list">
diff --git a/templates/federation/home.html b/templates/federation/home.html
deleted file mode 100644
index 6e7f217..0000000
--- a/templates/federation/home.html
+++ /dev/null
@@ -1,23 +0,0 @@
-{% extends "federation/base.html" %}
-{% block title %}Rose Ash — Federation{% endblock %}
-{% block content %}
-<div class="py-8">
-  <h1 class="text-3xl font-bold mb-4">Rose Ash</h1>
-  <p class="text-stone-600 mb-8">Cooperative platform with ActivityPub federation.</p>
-
-  <div class="grid grid-cols-1 md:grid-cols-3 gap-4">
-    <div class="bg-white rounded-lg shadow p-6">
-      <div class="text-3xl font-bold">{{ stats.actors }}</div>
-      <div class="text-stone-500">Actors</div>
-    </div>
-    <div class="bg-white rounded-lg shadow p-6">
-      <div class="text-3xl font-bold">{{ stats.activities }}</div>
-      <div class="text-stone-500">Activities</div>
-    </div>
-    <div class="bg-white rounded-lg shadow p-6">
-      <div class="text-3xl font-bold">{{ stats.followers }}</div>
-      <div class="text-stone-500">Followers</div>
-    </div>
-  </div>
-</div>
-{% endblock %}
diff --git a/templates/federation/notifications.html b/templates/federation/notifications.html
index 45467a9..11eb3f8 100644
--- a/templates/federation/notifications.html
+++ b/templates/federation/notifications.html
@@ -1,8 +1,8 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 
 {% block title %}Notifications — Rose Ash{% endblock %}
 
-{% block content %}
+{% block social_content %}
 <h1 class="text-2xl font-bold mb-6">Notifications</h1>
 
 {% if not notifications %}
diff --git a/templates/federation/profile.html b/templates/federation/profile.html
index 7da00fb..2e21a08 100644
--- a/templates/federation/profile.html
+++ b/templates/federation/profile.html
@@ -1,6 +1,6 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 {% block title %}@{{ actor.preferred_username }} — Rose Ash{% endblock %}
-{% block content %}
+{% block social_content %}
 <div class="py-8">
   <div class="bg-white rounded-lg shadow p-6 mb-6">
     <h1 class="text-2xl font-bold">{{ actor.display_name or actor.preferred_username }}</h1>
diff --git a/templates/federation/search.html b/templates/federation/search.html
index 0ca8bdd..a294fff 100644
--- a/templates/federation/search.html
+++ b/templates/federation/search.html
@@ -1,8 +1,8 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 
 {% block title %}Search — Rose Ash{% endblock %}
 
-{% block content %}
+{% block social_content %}
 <h1 class="text-2xl font-bold mb-6">Search</h1>
 
 <form method="get" action="{{ url_for('social.search') }}" class="mb-6">
diff --git a/templates/federation/timeline.html b/templates/federation/timeline.html
index 96f6882..74861f3 100644
--- a/templates/federation/timeline.html
+++ b/templates/federation/timeline.html
@@ -1,8 +1,8 @@
-{% extends "federation/base.html" %}
+{% extends "_types/social/index.html" %}
 
 {% block title %}{{ "Home" if timeline_type == "home" else "Public" }} Timeline — Rose Ash{% endblock %}
 
-{% block content %}
+{% block social_content %}
 <div class="flex items-center justify-between mb-6">
   <h1 class="text-2xl font-bold">{{ "Home" if timeline_type == "home" else "Public" }} Timeline</h1>
   {% if actor %}