diff --git a/packages/ui/src/components/chat/ChatContainer.tsx b/packages/ui/src/components/chat/ChatContainer.tsx
index 0d769c95..5d370e3e 100644
--- a/packages/ui/src/components/chat/ChatContainer.tsx
+++ b/packages/ui/src/components/chat/ChatContainer.tsx
@@ -65,8 +65,8 @@ const EMPTY_MESSAGES: Array<{ info: Message; parts: Part[] }> = [];
 const IDLE_SESSION_STATUS = { type: 'idle' as const };
 const CHAT_FORCE_SCROLL_BOTTOM_EVENT = 'openchamber:chat-force-scroll-bottom';
 const DEFAULT_RETRY_MESSAGE = 'Quota limit reached. Retrying automatically.';
-const DRAFT_EXIT_DURATION_MS = 100;
-const COMPOSER_MOVE_DURATION_MS = 120;
+const DRAFT_EXIT_DURATION_MS = 120;
+const COMPOSER_MOVE_DURATION_MS = 180;
 const CHAT_SCROLL_STYLE = {
     overflowAnchor: 'none',
     overscrollBehavior: 'contain',
@@ -519,7 +519,7 @@ const DraftWelcome: React.FC<{ exiting?: boolean }> = ({ exiting = false }) => {
 
     return (
         <div className={cn(
-            'oc-draft-center flex min-h-0 flex-1 flex-col items-center justify-center px-6 text-center transition-opacity duration-100 ease-out motion-reduce:transition-none',
+            'oc-draft-center flex min-h-0 flex-1 flex-col items-center justify-center px-6 text-center transition-opacity duration-[120ms] ease-out motion-reduce:transition-none',
             exiting && 'pointer-events-none opacity-0',
         )}>
             <h1 className="text-balance text-3xl font-normal tracking-tight text-foreground">
diff --git a/packages/ui/src/components/chat/ChatInput.tsx b/packages/ui/src/components/chat/ChatInput.tsx
index 83a3c2e9..27610e32 100644
--- a/packages/ui/src/components/chat/ChatInput.tsx
+++ b/packages/ui/src/components/chat/ChatInput.tsx
@@ -2387,7 +2387,7 @@ const ChatInputComponent: React.FC<ChatInputProps> = ({
         && !isVSCode
         && !isMiniChatSurface;
     const draftPresentationClassName = cn(
-        'transition-opacity duration-100 ease-out motion-reduce:transition-none',
+        'transition-opacity duration-[120ms] ease-out motion-reduce:transition-none',
         draftPresentationExiting && 'pointer-events-none opacity-0',
     );
 
diff --git a/packages/ui/src/components/chat/composer/DOCUMENTATION.md b/packages/ui/src/components/chat/composer/DOCUMENTATION.md
index 63136460..6ef1fd31 100644
--- a/packages/ui/src/components/chat/composer/DOCUMENTATION.md
+++ b/packages/ui/src/components/chat/composer/DOCUMENTATION.md
@@ -8,9 +8,9 @@ own state and wires these modules together; it should not grow logic that
 belongs to one of them.
 
 `ChatContainer.tsx` keeps one `ChatInput` mounted while a new-session draft
-becomes its first session. Draft-only UI first fades for 100ms while the editor
+becomes its first session. Draft-only UI first fades for 120ms while the editor
 stays in place. The parent then moves the editor to its final session position
-with a 120ms transform-only FLIP animation. Reduced-motion mode skips these
+with a 180ms transform-only FLIP animation. Reduced-motion mode skips these
 transitions. Do not restore separate draft and session composer branches:
 remounting the editor loses focus and interrupts the transition. Keep the
 existing mobile fixed-position rules unchanged.