diff --git a/CHANGELOG.md b/CHANGELOG.md
index c841f9130..5afd3a1de 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 ### Fixes
 - Android: tapping the foreground service notification brings the app to the front. (#179) — thanks @Syhids
 - Cron tool passes `id` to the gateway for update/remove/run/runs (keeps `jobId` input). (#180) — thanks @adamgall
+- Control UI: chat view uses page scroll with sticky header/sidebar and fixed composer (no inner scroll frame).
 - macOS: treat location permission as always-only to avoid iOS-only enums. (#165) — thanks @Nachx639
 - macOS: make generated gateway protocol models `Sendable` for Swift 6 strict concurrency. (#195) — thanks @andranik-sahakyan
 - WhatsApp: suppress typing indicator during heartbeat background tasks. (#190) — thanks @mcinteerj
diff --git a/ui/src/styles/components.css b/ui/src/styles/components.css
index 7665f661f..716b58598 100644
--- a/ui/src/styles/components.css
+++ b/ui/src/styles/components.css
@@ -429,6 +429,16 @@
   background: rgba(0, 0, 0, 0.2);
 }
 
+.chat {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+}
+
+.shell--chat .chat {
+  flex: 1;
+}
+
 .chat-header {
   display: flex;
   justify-content: space-between;
@@ -460,8 +470,9 @@
   display: flex;
   flex-direction: column;
   gap: 12px;
-  max-height: 60vh;
-  overflow: auto;
+  flex: 1;
+  max-height: none;
+  overflow: visible;
   padding: 14px 12px;
   min-width: 0;
   border-radius: 16px;
@@ -731,6 +742,16 @@
   gap: 10px;
 }
 
+.shell--chat .chat-compose {
+  position: sticky;
+  bottom: 0;
+  z-index: 5;
+  margin-top: 0;
+  padding-top: 12px;
+  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, var(--panel) 35%);
+  border-top: 1px solid var(--border);
+}
+
 .chat-compose__field {
   gap: 4px;
 }
diff --git a/ui/src/styles/layout.css b/ui/src/styles/layout.css
index 45e7073ec..b311c1447 100644
--- a/ui/src/styles/layout.css
+++ b/ui/src/styles/layout.css
@@ -1,4 +1,6 @@
 .shell {
+  --shell-pad: 18px;
+  --shell-gap: 18px;
   min-height: 100vh;
   display: grid;
   grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
@@ -6,13 +8,16 @@
   grid-template-areas:
     "topbar topbar"
     "nav content";
-  gap: 18px;
-  padding: 18px;
+  gap: var(--shell-gap);
+  padding: var(--shell-pad);
   animation: dashboard-enter 0.6s ease-out;
 }
 
 .topbar {
   grid-area: topbar;
+  position: sticky;
+  top: var(--shell-pad);
+  z-index: 20;
   display: flex;
   justify-content: space-between;
   align-items: center;
@@ -51,6 +56,16 @@
 
 .nav {
   grid-area: nav;
+  position: sticky;
+  top: calc(
+    var(--shell-pad) + var(--topbar-height, 0px) + var(--shell-gap)
+  );
+  align-self: start;
+  max-height: calc(
+    100vh - var(--topbar-height, 0px) - var(--shell-gap) -
+      var(--shell-pad) - var(--shell-pad)
+  );
+  overflow: auto;
   padding: 16px;
   border: 1px solid var(--border);
   border-radius: 20px;
@@ -132,6 +147,14 @@
   display: flex;
   flex-direction: column;
   gap: 20px;
+  min-height: 0;
+}
+
+.shell--chat .content {
+  min-height: calc(
+    100vh - var(--topbar-height, 0px) - var(--shell-gap) -
+      var(--shell-pad) - var(--shell-pad)
+  );
 }
 
 .content-header {
@@ -204,16 +227,19 @@
 
 @media (max-width: 1100px) {
   .shell {
+    --shell-pad: 12px;
+    --shell-gap: 12px;
     grid-template-columns: 1fr;
     grid-template-rows: auto auto 1fr;
     grid-template-areas:
       "topbar"
       "nav"
       "content";
-    padding: 12px;
   }
 
   .nav {
+    position: static;
+    max-height: none;
     display: flex;
     gap: 16px;
     overflow-x: auto;
@@ -234,6 +260,7 @@
   }
 
   .topbar {
+    position: static;
     flex-direction: column;
     align-items: flex-start;
     gap: 12px;
diff --git a/ui/src/ui/app-render.ts b/ui/src/ui/app-render.ts
index 120fd5697..c38fc8544 100644
--- a/ui/src/ui/app-render.ts
+++ b/ui/src/ui/app-render.ts
@@ -184,9 +184,10 @@ export function renderApp(state: AppViewState) {
   const sessionsCount = state.sessionsResult?.count ?? null;
   const cronNext = state.cronStatus?.nextWakeAtMs ?? null;
   const chatDisabledReason = state.connected ? null : "Disconnected from gateway.";
+  const isChat = state.tab === "chat";
 
   return html`
-    <div class="shell">
+    <div class="shell ${isChat ? "shell--chat" : ""}">
       <header class="topbar">
         <div class="brand">
           <div class="brand-title">Clawdbot Control</div>
@@ -211,7 +212,7 @@ export function renderApp(state: AppViewState) {
           `,
         )}
       </aside>
-      <main class="content">
+      <main class="content ${isChat ? "content--chat" : ""}">
         <section class="content-header">
           <div>
             <div class="page-title">${titleForTab(state.tab)}</div>
diff --git a/ui/src/ui/app.ts b/ui/src/ui/app.ts
index d098e02bc..f50d9542f 100644
--- a/ui/src/ui/app.ts
+++ b/ui/src/ui/app.ts
@@ -348,6 +348,7 @@ export class ClawdbotApp extends LitElement {
   private popStateHandler = () => this.onPopState();
   private themeMedia: MediaQueryList | null = null;
   private themeMediaHandler: ((event: MediaQueryListEvent) => void) | null = null;
+  private topbarObserver: ResizeObserver | null = null;
 
   createRenderRoot() {
     return this;
@@ -365,10 +366,16 @@ export class ClawdbotApp extends LitElement {
     this.startNodesPolling();
   }
 
+  protected firstUpdated() {
+    this.observeTopbar();
+  }
+
   disconnectedCallback() {
     window.removeEventListener("popstate", this.popStateHandler);
     this.stopNodesPolling();
     this.detachThemeListener();
+    this.topbarObserver?.disconnect();
+    this.topbarObserver = null;
     super.disconnectedCallback();
   }
 
@@ -437,6 +444,19 @@ export class ClawdbotApp extends LitElement {
     });
   }
 
+  private observeTopbar() {
+    if (typeof ResizeObserver === "undefined") return;
+    const topbar = this.querySelector(".topbar");
+    if (!topbar) return;
+    const update = () => {
+      const { height } = topbar.getBoundingClientRect();
+      this.style.setProperty("--topbar-height", `${height}px`);
+    };
+    update();
+    this.topbarObserver = new ResizeObserver(() => update());
+    this.topbarObserver.observe(topbar);
+  }
+
   private startNodesPolling() {
     if (this.nodesPollInterval != null) return;
     this.nodesPollInterval = window.setInterval(