Merge pull request 'Unify create-flow gutters, viewport height, and action-bar width so tablet and wide layouts stay aligned with step content.' (#78) from adilallo/fix/CR-182-builder-layout into main

Reviewed-on: #78

app/(app)/create/CreateFlowLayoutClient.tsx

@@ -76,7 +76,13 @@ import {
   CREATE_FLOW_FOOTER_BUTTON_CLASS,
   CREATE_FLOW_FOOTER_BUTTON_ON_DARK_CLASS,
 } from "./utils/createFlowFooterClassNames";
-import { CREATE_FLOW_MD_CENTERED_MAIN_CLASS } from "./components/createFlowLayoutTokens";
+import {
+  CREATE_FLOW_MD_CENTERED_MAIN_CLASS,
+  CREATE_FLOW_PAGE_GUTTER_CLASS,
+  CREATE_FLOW_SCROLL_REGION_CLASS,
+  CREATE_FLOW_VIEWPORT_FRAME_CLASS,
+  getCreateFlowContentMaxClass,
+} from "./components/createFlowLayoutTokens";
 import {
   CUSTOM_RULE_CONFIRM_FOOTER_STEP_BY_STEP,
   methodCardFacetSectionForConfirmStep,
@@ -668,10 +674,10 @@ function CreateFlowLayoutContent({
   ].filter((b): b is NonNullable<typeof b> => b !== null);
 
   return (
-    <div className="relative flex h-screen min-h-0 flex-col overflow-hidden bg-black">
+    <div className={`${CREATE_FLOW_VIEWPORT_FRAME_CLASS} bg-black`}>
       {topBanners.length > 0 ? (
         <div
-          className="pointer-events-none fixed left-0 right-0 top-0 z-[200] flex flex-col gap-2 px-[var(--spacing-measures-spacing-500,20px)] pt-[var(--spacing-measures-spacing-300,12px)] md:px-[var(--measures-spacing-1800,64px)]"
+          className={`pointer-events-none fixed left-0 right-0 top-0 z-[200] flex flex-col gap-2 ${CREATE_FLOW_PAGE_GUTTER_CLASS} pt-[var(--spacing-measures-spacing-300,12px)]`}
           aria-live="polite"
         >
           {topBanners.map((b) => (
@@ -798,13 +804,17 @@ function CreateFlowLayoutContent({
         />
       ) : null}
       <main
-        className={`flex min-h-0 min-w-0 flex-1 w-full max-w-full overflow-x-hidden ${mainContentClass} ${mainResponsiveLayout}`}
+        className={`flex min-h-0 min-w-0 flex-1 w-full max-w-full overflow-x-hidden ${CREATE_FLOW_SCROLL_REGION_CLASS} ${mainContentClass} ${mainResponsiveLayout}`}
       >
         {children}
       </main>
       {!isCompletedStep && (
         <CreateFlowFooter
           className="shrink-0"
+          contentMaxClass={getCreateFlowContentMaxClass({
+            step: currentStep,
+            isTemplateReview: isTemplateReviewRoute,
+          })}
           progressBar={
             !isTemplateReviewRoute &&
             !isFinalReviewLike &&

app/(app)/create/SignedInDraftHydration.tsx

@@ -11,6 +11,7 @@ import {
 import { useCreateFlow } from "./context/CreateFlowContext";
 import { fetchDraftFromServer } from "../../../lib/create/api";
 import messages from "../../../messages/en/index";
+import { CREATE_FLOW_PAGE_GUTTER_CLASS } from "./components/createFlowLayoutTokens";
 import Alert from "../../components/modals/Alert";
 import {
   isValidStep,
@@ -161,7 +162,7 @@ export function SignedInDraftHydration({
   if (!loadingHydration) return null;
 
   return (
-    <div className="pointer-events-none fixed left-0 right-0 top-14 z-[170] flex justify-center px-[var(--spacing-measures-spacing-500,20px)] pt-2 md:top-16 md:px-[var(--measures-spacing-1800,64px)]">
+    <div className={`pointer-events-none fixed left-0 right-0 top-14 z-[170] flex justify-center ${CREATE_FLOW_PAGE_GUTTER_CLASS} pt-2 md:top-16`}>
       <div className="pointer-events-auto w-full max-w-[960px]">
         <Alert
           type="banner"

app/(app)/create/components/CreateFlowCardStackStepShell.tsx

@@ -0,0 +1,56 @@
+"use client";
+
+import type { ReactNode } from "react";
+import { CreateFlowHeaderLockup } from "./CreateFlowHeaderLockup";
+import { CreateFlowStepShell } from "./CreateFlowStepShell";
+import {
+  CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS,
+  CREATE_FLOW_MD_CENTERED_SHELL_CLASS,
+  CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS,
+  CREATE_FLOW_WIDE_MAX_CLASS,
+} from "./createFlowLayoutTokens";
+
+type CreateFlowCardStackStepShellProps = {
+  lockupTitle: string;
+  lockupDescription?: ReactNode;
+  /** When true, the stack region exposes `aria-busy` while recommendations load. */
+  stackBusy?: boolean;
+  children: ReactNode;
+};
+
+/**
+ * Centered lockup + card-stack layout shared by communication, membership, and
+ * conflict-management steps (Figma compact card stack).
+ */
+export function CreateFlowCardStackStepShell({
+  lockupTitle,
+  lockupDescription,
+  stackBusy = false,
+  children,
+}: CreateFlowCardStackStepShellProps) {
+  return (
+    <CreateFlowStepShell
+      variant="wideGridLoosePadding"
+      contentTopBelowMd="space-800"
+      className={CREATE_FLOW_MD_CENTERED_SHELL_CLASS}
+    >
+      <div
+        className={`flex w-full min-w-0 flex-col items-center gap-6 ${CREATE_FLOW_WIDE_MAX_CLASS}`}
+      >
+        <div className={CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}>
+          <CreateFlowHeaderLockup
+            title={lockupTitle}
+            description={lockupDescription}
+            justification="center"
+          />
+        </div>
+        <div
+          className={CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS}
+          aria-busy={stackBusy}
+        >
+          {children}
+        </div>
+      </div>
+    </CreateFlowStepShell>
+  );
+}

app/(app)/create/components/CreateFlowStepShell.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import type { ReactNode } from "react";
+import { CREATE_FLOW_PAGE_GUTTER_CLASS } from "./createFlowLayoutTokens";
 
 export type CreateFlowStepShellVariant =
   | "centeredNarrow"
@@ -13,15 +14,12 @@ export type CreateFlowStepShellVariant =
 export type CreateFlowContentTopBelowMd = "none" | "space-1400" | "space-800";
 
 const outerByVariant: Record<CreateFlowStepShellVariant, string> = {
-  centeredNarrow:
-    "flex w-full min-w-0 flex-col items-center px-5 md:px-16",
-  centeredNarrowBottomPad:
-    "flex w-full min-w-0 flex-col items-center px-5 pb-28 md:px-[var(--measures-spacing-1800,64px)] md:pb-32",
-  /** Wide two-column steps; 1328px = two 640px columns + 48px gutter. */
-  wideGrid: "w-full min-w-0 max-w-[1328px] shrink-0 px-5 md:px-12",
-  /** Create Community review + card grid (Figma Flow — Review `19706:12135`): max width 1440. */
-  wideGridLoosePadding:
-    "w-full min-w-0 max-w-[1440px] shrink-0 px-5 md:px-16",
+  centeredNarrow: `flex w-full min-w-0 flex-col items-center ${CREATE_FLOW_PAGE_GUTTER_CLASS}`,
+  centeredNarrowBottomPad: `flex w-full min-w-0 flex-col items-center ${CREATE_FLOW_PAGE_GUTTER_CLASS} pb-28 md:pb-32`,
+  /** Wide two-column steps; inner content supplies the 1328px cap. */
+  wideGrid: `flex w-full min-w-0 shrink-0 flex-col items-center ${CREATE_FLOW_PAGE_GUTTER_CLASS}`,
+  /** Create Community review + card grid; inner content supplies the 1440px cap. */
+  wideGridLoosePadding: `flex w-full min-w-0 shrink-0 flex-col items-center ${CREATE_FLOW_PAGE_GUTTER_CLASS}`,
   bare: "w-full min-w-0",
 };
 
@@ -41,7 +39,8 @@ interface CreateFlowStepShellProps {
 
 /**
  * Shared horizontal padding and width constraints for create-flow step pages.
- * Horizontal padding uses Tailwind `md:` so it tracks `--breakpoint-md` (640px in `app/tailwind.css`).
+ * Gutters come from {@link CREATE_FLOW_PAGE_GUTTER_CLASS} (`md` / `lg` track
+ * `--breakpoint-md` and `--breakpoint-lg` in `app/tailwind.css`).
  */
 export function CreateFlowStepShell({
   children,

app/(app)/create/components/CreateFlowTwoColumnSelectShell.tsx

@@ -5,7 +5,11 @@ import {
   CreateFlowStepShell,
   type CreateFlowContentTopBelowMd,
 } from "./CreateFlowStepShell";
-import { CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS } from "./createFlowLayoutTokens";
+import {
+  CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS,
+  CREATE_FLOW_SCROLL_REGION_CLASS,
+  CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS,
+} from "./createFlowLayoutTokens";
 
 export type CreateFlowSelectShellLgVerticalAlign = "center" | "start";
 
@@ -26,10 +30,10 @@ interface CreateFlowTwoColumnSelectShellProps {
 }
 
 /**
- * Two-column layout for create-flow select steps (community size/structure, core values) and
- * {@link DecisionApproachesScreen} (decision approaches). Below `lg` (1024px), one column + main scrolls.
- * At `lg+`, mirrors {@link CompletedScreen}: static header column + scrollable controls column
- * (`min-h-0` + `overflow-y-auto` height chain; see completed page right rail).
+ * Question-and-options layout for create-flow select steps (community size/structure,
+ * core values, stakeholders) and {@link DecisionApproachesScreen}.
+ * Below `lg` (1024px), one column uses available width and main scrolls.
+ * At `lg+`, static header column + scrollable options column (`min-h-0` + overflow).
  */
 export function CreateFlowTwoColumnSelectShell({
   header,
@@ -56,24 +60,24 @@ export function CreateFlowTwoColumnSelectShell({
     >
       <div
         className={
-          "flex w-full min-w-0 flex-col items-start gap-[var(--measures-spacing-400,16px)] md:max-w-[640px] " +
-          "max-lg:flex-none lg:max-h-full lg:max-w-[1328px] lg:min-h-0 lg:flex-1 lg:flex-row lg:flex-nowrap " +
-          `${rowLgCrossAlignClass} lg:justify-center lg:gap-[var(--measures-spacing-1200,48px)] lg:overflow-hidden`
+          "flex w-full min-w-0 flex-col items-start gap-[var(--measures-spacing-400,16px)] " +
+          "max-lg:flex-none lg:max-h-full lg:min-h-0 lg:flex-1 lg:flex-row lg:flex-nowrap " +
+          `${rowLgCrossAlignClass} lg:justify-center lg:gap-[var(--measures-spacing-1200,48px)] lg:overflow-hidden ${CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS}`
         }
       >
         <div
           className={
             `flex w-full min-w-0 shrink-0 flex-col items-start gap-[var(--measures-spacing-200,8px)] ` +
-            `lg:flex-1 ${leftLgMainJustifyClass} lg:py-[12px] lg:max-w-[640px] ${CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}`
+            `lg:flex-1 ${leftLgMainJustifyClass} lg:py-[12px] ${CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}`
           }
         >
           {header}
         </div>
         <div
           className={
-            `scrollbar-hide relative flex w-full min-w-0 flex-col items-start gap-[var(--measures-spacing-800,32px)] ` +
+            `relative flex w-full min-w-0 flex-col items-start gap-[var(--measures-spacing-800,32px)] ` +
             `overflow-x-hidden lg:min-h-0 lg:flex-1 lg:overflow-y-auto lg:pb-[var(--measures-spacing-300,12px)] ` +
-            CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS
+            `${CREATE_FLOW_SCROLL_REGION_CLASS} ${CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}`
           }
         >
           {children}

app/(app)/create/components/createFlowLayoutTokens.ts

@@ -1,13 +1,47 @@
-/** Single column/section: full width under `md`, max 640px from `--breakpoint-md` up. */
+import type { CreateFlowStep } from "../types";
+import { CREATE_FLOW_SCREEN_REGISTRY } from "../utils/createFlowScreenRegistry";
+
+/**
+ * Shared page gutters for create-flow chrome and step shells.
+ * Six viewport bands collapse to three values: 20px below `md`, 48px from `md`,
+ * 64px from `lg` (320–639 / 640–1023 / 1024+).
+ */
+export const CREATE_FLOW_PAGE_GUTTER_CLASS = "px-5 md:px-12 lg:px-16";
+
+/**
+ * Wizard viewport frame. `dvh` tracks mobile browser chrome so the action bar
+ * stays on-screen; `max-h-dvh` keeps the flex column from overflowing it.
+ */
+export const CREATE_FLOW_VIEWPORT_FRAME_CLASS =
+  "relative flex h-dvh max-h-dvh min-h-0 flex-col overflow-hidden";
+
+/** Design-system scrollbar for create-flow scroll regions (not `scrollbar-hide`). */
+export const CREATE_FLOW_SCROLL_REGION_CLASS = "scrollbar-design";
+
+/**
+ * Fade above the fixed action bar so content that continues below the fold is
+ * visible as a continuation cue (Figma Scrim / footer overlay).
+ */
+export const CREATE_FLOW_FOOTER_SCRIM_CLASS =
+  "pointer-events-none absolute inset-x-0 top-0 z-[1] h-8 -translate-y-full bg-gradient-to-t from-[var(--color-surface-default-primary,#000)] to-transparent";
+
+/**
+ * Single column: full width below `lg` so tablet widths use available space;
+ * 640px from `--breakpoint-lg` up (two-column layouts start at `lg`).
+ */
 export const CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS =
-  "w-full min-w-0 md:max-w-[640px]";
+  "w-full min-w-0 lg:max-w-[640px]";
 
 /** Grid cell: same cap as column max, centered when the track is wider than 640px. */
 export const CREATE_FLOW_MD_UP_GRID_CELL_CLASS =
-  "w-full min-w-0 md:mx-auto md:max-w-[640px]";
+  "w-full min-w-0 lg:mx-auto lg:max-w-[640px]";
 
 /** Two 640px columns + `--measures-spacing-1200` (48px) gutter. */
-export const CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS = "md:max-w-[1328px]";
+export const CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS =
+  "w-full min-w-0 lg:max-w-[1328px]";
+
+/** Review / card-stack frames (Figma Flow — Review max 1440). */
+export const CREATE_FLOW_WIDE_MAX_CLASS = "w-full min-w-0 lg:max-w-[1440px]";
 
 /**
  * Lockup+card and card-stack `<main>`: keep `items-start` so a tall card can
@@ -29,3 +63,30 @@ export const CREATE_FLOW_MD_CENTERED_SHELL_CLASS = "md:my-auto md:pt-0";
  */
 export const CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS =
   "w-full min-w-0 md:max-w-[min(100%,860px)]";
+
+/**
+ * Inner max-width for step content and the action bar, so the primary button
+ * lines up with the nearest content column above 1440.
+ */
+export function getCreateFlowContentMaxClass(options: {
+  step: CreateFlowStep | null | undefined;
+  isTemplateReview?: boolean;
+}): string {
+  if (options.isTemplateReview) {
+    return CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS;
+  }
+  if (!options.step) {
+    return CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS;
+  }
+  switch (CREATE_FLOW_SCREEN_REGISTRY[options.step].layoutKind) {
+    case "select":
+    case "right-rail":
+    case "completed":
+    case "review":
+      return CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS;
+    case "card":
+      return CREATE_FLOW_WIDE_MAX_CLASS;
+    default:
+      return CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS;
+  }
+}

app/(app)/create/loading.tsx

@@ -6,7 +6,7 @@
 export default function CreateFlowRouteLoading() {
   return (
     <div
-      className="flex h-screen min-h-0 flex-col overflow-hidden bg-[var(--color-surface-default-primary)]"
+      className="flex h-dvh max-h-dvh min-h-0 flex-col overflow-hidden bg-[var(--color-surface-default-primary)]"
       aria-busy="true"
       aria-live="polite"
     >

app/(app)/create/screens/card/CommunicationMethodsScreen.tsx

@@ -6,7 +6,7 @@
  *
  * Lives under `screens/card/` (not `select/`): Figma **card stack** layout is a distinct shell from
  * two-column chip **select** frames. Future card-stack steps get their own `*Screen.tsx` here and
- * reuse `CardStack` / `CreateFlowStepShell` as needed.
+ * reuse `CardStack` / `CreateFlowCardStackStepShell` as needed.
  *
  * Card click opens the Figma create modal (node `20246-15829`) with three
  * editable sections rendered by {@link CommunicationMethodEditFields}. The
@@ -22,16 +22,10 @@ import { useCreateFlowMdUp } from "../../hooks/useCreateFlowMdUp";
 import { useBeforeUnloadGuard } from "../../../../hooks/useBeforeUnloadGuard";
 import { useDiscardCustomizeConfirm } from "../../hooks/useDiscardCustomizeConfirm";
 import { useMethodCardDeckOrdering } from "../../hooks/useMethodCardDeckOrdering";
-import { CreateFlowHeaderLockup } from "../../components/CreateFlowHeaderLockup";
+import { CreateFlowCardStackStepShell } from "../../components/CreateFlowCardStackStepShell";
 import CardStack from "../../../../components/cards/CardStack";
 import Create from "../../../../components/modals/Create";
 import InlineTextButton from "../../../../components/buttons/InlineTextButton";
-import { CreateFlowStepShell } from "../../components/CreateFlowStepShell";
-import {
-  CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS,
-  CREATE_FLOW_MD_CENTERED_SHELL_CLASS,
-  CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS,
-} from "../../components/createFlowLayoutTokens";
 import { CommunicationMethodEditFields } from "../../components/methodEditFields";
 import CustomMethodCardWizard from "../../components/CustomMethodCardWizard";
 import { uploadCreateFlowFile } from "../../../../../lib/create/uploadToServer";
@@ -700,22 +694,10 @@ export function CommunicationMethodsScreen() {
 
   return (
     <>
-    <CreateFlowStepShell
-      variant="wideGridLoosePadding"
-      contentTopBelowMd="space-800"
-      className={CREATE_FLOW_MD_CENTERED_SHELL_CLASS}
-    >
-      <div className="flex w-full min-w-0 flex-col items-center gap-6">
-        <div className={CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}>
-          <CreateFlowHeaderLockup
-            title={title}
-            description={description}
-            justification="center"
-          />
-        </div>
-        <div
-          className={CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS}
-          aria-busy={!recommendationsReady}
+    <CreateFlowCardStackStepShell
+      lockupTitle={title}
+      lockupDescription={description}
+      stackBusy={!recommendationsReady}
     >
       {recommendationsReady && (
         <CardStack
@@ -735,9 +717,7 @@ export function CommunicationMethodsScreen() {
           headerLockupSize={mdUp ? "L" : "M"}
         />
       )}
-        </div>
-      </div>
-
+    </CreateFlowCardStackStepShell>
       <Create
         isOpen={createModalOpen}
         onClose={handleCreateModalClose}
@@ -780,7 +760,6 @@ export function CommunicationMethodsScreen() {
           )
         ) : null}
       </Create>
-    </CreateFlowStepShell>
       <CustomMethodCardWizard
         isOpen={addCustomWizardOpen}
         onClose={handleCloseAddWizard}

app/(app)/create/screens/card/ConflictManagementScreen.tsx

@@ -19,16 +19,10 @@ import { useCreateFlowMdUp } from "../../hooks/useCreateFlowMdUp";
 import { useBeforeUnloadGuard } from "../../../../hooks/useBeforeUnloadGuard";
 import { useDiscardCustomizeConfirm } from "../../hooks/useDiscardCustomizeConfirm";
 import { useMethodCardDeckOrdering } from "../../hooks/useMethodCardDeckOrdering";
-import { CreateFlowHeaderLockup } from "../../components/CreateFlowHeaderLockup";
+import { CreateFlowCardStackStepShell } from "../../components/CreateFlowCardStackStepShell";
 import CardStack from "../../../../components/cards/CardStack";
 import Create from "../../../../components/modals/Create";
 import InlineTextButton from "../../../../components/buttons/InlineTextButton";
-import { CreateFlowStepShell } from "../../components/CreateFlowStepShell";
-import {
-  CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS,
-  CREATE_FLOW_MD_CENTERED_SHELL_CLASS,
-  CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS,
-} from "../../components/createFlowLayoutTokens";
 import { ConflictManagementEditFields } from "../../components/methodEditFields";
 import CustomMethodCardWizard from "../../components/CustomMethodCardWizard";
 import { uploadCreateFlowFile } from "../../../../../lib/create/uploadToServer";
@@ -701,22 +695,10 @@ export function ConflictManagementScreen() {
 
   return (
     <>
-    <CreateFlowStepShell
-      variant="wideGridLoosePadding"
-      contentTopBelowMd="space-800"
-      className={CREATE_FLOW_MD_CENTERED_SHELL_CLASS}
-    >
-      <div className="flex w-full min-w-0 flex-col items-center gap-6">
-        <div className={CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}>
-          <CreateFlowHeaderLockup
-            title={title}
-            description={description}
-            justification="center"
-          />
-        </div>
-        <div
-          className={CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS}
-          aria-busy={!recommendationsReady}
+    <CreateFlowCardStackStepShell
+      lockupTitle={title}
+      lockupDescription={description}
+      stackBusy={!recommendationsReady}
     >
       {recommendationsReady && (
         <CardStack
@@ -736,9 +718,7 @@ export function ConflictManagementScreen() {
           headerLockupSize={mdUp ? "L" : "M"}
         />
       )}
-        </div>
-      </div>
-
+    </CreateFlowCardStackStepShell>
       <Create
         isOpen={createModalOpen}
         onClose={handleCreateModalClose}
@@ -781,7 +761,6 @@ export function ConflictManagementScreen() {
           )
         ) : null}
       </Create>
-    </CreateFlowStepShell>
       <CustomMethodCardWizard
         isOpen={addCustomWizardOpen}
         onClose={handleCloseAddWizard}

app/(app)/create/screens/card/MembershipMethodsScreen.tsx

@@ -20,16 +20,10 @@ import { useCreateFlowMdUp } from "../../hooks/useCreateFlowMdUp";
 import { useBeforeUnloadGuard } from "../../../../hooks/useBeforeUnloadGuard";
 import { useDiscardCustomizeConfirm } from "../../hooks/useDiscardCustomizeConfirm";
 import { useMethodCardDeckOrdering } from "../../hooks/useMethodCardDeckOrdering";
-import { CreateFlowHeaderLockup } from "../../components/CreateFlowHeaderLockup";
+import { CreateFlowCardStackStepShell } from "../../components/CreateFlowCardStackStepShell";
 import CardStack from "../../../../components/cards/CardStack";
 import Create from "../../../../components/modals/Create";
 import InlineTextButton from "../../../../components/buttons/InlineTextButton";
-import { CreateFlowStepShell } from "../../components/CreateFlowStepShell";
-import {
-  CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS,
-  CREATE_FLOW_MD_CENTERED_SHELL_CLASS,
-  CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS,
-} from "../../components/createFlowLayoutTokens";
 import { MembershipMethodEditFields } from "../../components/methodEditFields";
 import CustomMethodCardWizard from "../../components/CustomMethodCardWizard";
 import { uploadCreateFlowFile } from "../../../../../lib/create/uploadToServer";
@@ -694,22 +688,10 @@ export function MembershipMethodsScreen() {
 
   return (
     <>
-    <CreateFlowStepShell
-      variant="wideGridLoosePadding"
-      contentTopBelowMd="space-800"
-      className={CREATE_FLOW_MD_CENTERED_SHELL_CLASS}
-    >
-      <div className="flex w-full min-w-0 flex-col items-center gap-6">
-        <div className={CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}>
-          <CreateFlowHeaderLockup
-            title={title}
-            description={description}
-            justification="center"
-          />
-        </div>
-        <div
-          className={CREATE_FLOW_CARD_STACK_AREA_MAX_CLASS}
-          aria-busy={!recommendationsReady}
+    <CreateFlowCardStackStepShell
+      lockupTitle={title}
+      lockupDescription={description}
+      stackBusy={!recommendationsReady}
     >
       {recommendationsReady && (
         <CardStack
@@ -729,9 +711,7 @@ export function MembershipMethodsScreen() {
           headerLockupSize={mdUp ? "L" : "M"}
         />
       )}
-        </div>
-      </div>
-
+    </CreateFlowCardStackStepShell>
       <Create
         isOpen={createModalOpen}
         onClose={handleCreateModalClose}
@@ -774,7 +754,6 @@ export function MembershipMethodsScreen() {
           )
         ) : null}
       </Create>
-    </CreateFlowStepShell>
       <CustomMethodCardWizard
         isOpen={addCustomWizardOpen}
         onClose={handleCloseAddWizard}

app/(app)/create/screens/completed/CompletedScreen.tsx

@@ -16,6 +16,8 @@ import { useCreateFlowMdUp } from "../../hooks/useCreateFlowMdUp";
 import { CreateFlowHeaderLockup } from "../../components/CreateFlowHeaderLockup";
 import {
   CREATE_FLOW_MD_UP_GRID_CELL_CLASS,
+  CREATE_FLOW_PAGE_GUTTER_CLASS,
+  CREATE_FLOW_SCROLL_REGION_CLASS,
   CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS,
 } from "../../components/createFlowLayoutTokens";
 import {
@@ -163,7 +165,7 @@ export function CompletedScreen() {
     <>
       <div className="flex min-h-0 w-full flex-1 flex-col overflow-hidden bg-[var(--color-teal-teal50,#c9fef9)] md:h-full">
         <div
-          className={`mx-auto grid min-h-0 w-full grid-cols-1 gap-4 px-5 max-md:max-w-[639px] max-md:overflow-y-auto max-md:overscroll-y-contain max-md:pt-[var(--space-800)] max-md:pb-8 md:h-full md:grid-cols-2 md:grid-rows-1 md:items-stretch md:justify-items-center md:gap-[var(--measures-spacing-1200,48px)] md:overflow-hidden md:px-12 md:py-0 ${CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS}`}
+          className={`mx-auto grid min-h-0 w-full grid-cols-1 gap-4 ${CREATE_FLOW_PAGE_GUTTER_CLASS} max-md:overflow-y-auto max-md:overscroll-y-contain max-md:pt-[var(--space-800)] max-md:pb-8 md:h-full md:grid-cols-2 md:grid-rows-1 md:items-stretch md:justify-items-center md:gap-[var(--measures-spacing-1200,48px)] md:overflow-hidden md:py-0 ${CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS}`}
         >
           <div
             className={`flex flex-col justify-start max-md:min-h-min max-md:overflow-visible min-h-0 overflow-hidden md:justify-center md:pb-8 ${CREATE_FLOW_MD_UP_GRID_CELL_CLASS}`}
@@ -177,7 +179,7 @@ export function CompletedScreen() {
             />
           </div>
           <div
-            className={`scrollbar-hide relative flex min-h-0 flex-col self-stretch overflow-x-hidden md:max-h-full md:overflow-y-auto ${CREATE_FLOW_MD_UP_GRID_CELL_CLASS}`}
+            className={`relative flex min-h-0 flex-col self-stretch overflow-x-hidden md:max-h-full md:overflow-y-auto ${CREATE_FLOW_SCROLL_REGION_CLASS} ${CREATE_FLOW_MD_UP_GRID_CELL_CLASS}`}
           >
             <div
               className="pointer-events-none sticky top-0 z-10 hidden h-5 shrink-0 bg-gradient-to-b from-[var(--color-teal-teal50,#c9fef9)]/55 from-0% via-[var(--color-teal-teal50,#c9fef9)]/20 via-50% to-transparent md:block"

app/(app)/create/screens/select/ConfirmStakeholdersScreen.tsx

@@ -9,8 +9,7 @@ import { useTranslation } from "../../../../contexts/MessagesContext";
 import { MAX_STAKEHOLDER_EMAILS } from "../../../../../lib/create/stakeholderLimits";
 import { useCreateFlow } from "../../context/CreateFlowContext";
 import { CreateFlowHeaderLockup } from "../../components/CreateFlowHeaderLockup";
-import { CreateFlowStepShell } from "../../components/CreateFlowStepShell";
-import { CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS } from "../../components/createFlowLayoutTokens";
+import { CreateFlowTwoColumnSelectShell } from "../../components/CreateFlowTwoColumnSelectShell";
 import {
   CREATE_FLOW_MANAGE_STAKEHOLDERS_QUERY,
   CREATE_FLOW_MANAGE_STAKEHOLDERS_VALUE,
@@ -131,42 +130,31 @@ export function ConfirmStakeholdersScreen() {
 
   if (managePublishedMode) {
     return (
-      <CreateFlowStepShell
-        variant="centeredNarrowBottomPad"
-        contentTopBelowMd="space-1400"
-      >
-        <div
-          className={`flex flex-col items-start gap-[var(--measures-spacing-300,12px)] ${CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}`}
-        >
-          <div className="flex w-full flex-col gap-[var(--measures-spacing-200,8px)] py-[12px]">
+      <CreateFlowTwoColumnSelectShell
+        header={
           <CreateFlowHeaderLockup
             title={t("managePublished.lockupTitle")}
             description={t("managePublished.lockupDescription")}
             justification="left"
           />
-          </div>
+        }
+      >
         <PublishedStakeholdersManagePanel ruleId={editingPublishedRuleId} />
-        </div>
-      </CreateFlowStepShell>
+      </CreateFlowTwoColumnSelectShell>
     );
   }
 
   return (
     <>
-      <CreateFlowStepShell
-        variant="centeredNarrowBottomPad"
-        contentTopBelowMd="space-1400"
-      >
-        <div
-          className={`flex flex-col items-start gap-[var(--measures-spacing-300,12px)] ${CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS}`}
-        >
-          <div className="flex w-full flex-col gap-[var(--measures-spacing-200,8px)] py-[12px]">
+      <CreateFlowTwoColumnSelectShell
+        header={
           <CreateFlowHeaderLockup
             title={t("title")}
             description={t("description")}
             justification="left"
           />
-          </div>
+        }
+      >
         {chipError ? (
           <p
             className="text-small-paragraph text-[var(--color-border-default-utility-negative)]"
@@ -187,8 +175,7 @@ export function ConfirmStakeholdersScreen() {
           addButton
           addButtonText={t("addStakeholder")}
         />
-        </div>
-      </CreateFlowStepShell>
+      </CreateFlowTwoColumnSelectShell>
 
       {!toastDismissed && (
         <div

app/(app)/create/utils/flowSteps.ts

@@ -195,13 +195,14 @@ export function shouldOfferCreateFlowSaveAndExit(
 
 /**
  * Steps where below `lg` the main column scrolls with split layout
- * (`CreateFlowLayoutClient` — Linear CR-92 §4).
+ * (`CreateFlowLayoutClient`).
  */
 export const CREATE_FLOW_SELECT_SPLIT_SCROLL_STEPS: readonly CreateFlowStep[] = [
   "community-size",
   "community-structure",
   "core-values",
   "decision-approaches",
+  "confirm-stakeholders",
 ] as const;
 
 export function createFlowStepUsesSelectSplitScroll(

app/components/navigation/CreateFlowFooter/CreateFlowFooter.container.tsx

@@ -17,6 +17,7 @@ const CreateFlowFooterContainer = memo<CreateFlowFooterProps>(
     proportionBarVariant,
     onBackClick,
     className = "",
+    contentMaxClass,
     footerAriaLabel,
   }) => {
     const t = useTranslation("controlsChrome");
@@ -29,6 +30,7 @@ const CreateFlowFooterContainer = memo<CreateFlowFooterProps>(
         proportionBarVariant={proportionBarVariant}
         onBackClick={onBackClick}
         className={className}
+        contentMaxClass={contentMaxClass}
         footerAriaLabel={footerAriaLabel ?? t("createFlowFooterAriaLabel")}
       />
     );

app/components/navigation/CreateFlowFooter/CreateFlowFooter.types.ts

@@ -36,6 +36,11 @@ export interface CreateFlowFooterProps {
    * Additional CSS classes
    */
   className?: string;
+  /**
+   * Inner max-width for the progress bar and actions, matching the step
+   * content column so the primary button does not drift at wide viewports.
+   */
+  contentMaxClass?: string;
   /**
    * Accessible name for the footer landmark.
    */

app/components/navigation/CreateFlowFooter/CreateFlowFooter.view.tsx

@@ -1,6 +1,11 @@
 import ProportionBar from "../../progress/ProportionBar";
 import Button from "../../buttons/Button";
 import type { CreateFlowFooterProps } from "./CreateFlowFooter.types";
+import {
+  CREATE_FLOW_FOOTER_SCRIM_CLASS,
+  CREATE_FLOW_PAGE_GUTTER_CLASS,
+  CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS,
+} from "../../../(app)/create/components/createFlowLayoutTokens";
 
 export function CreateFlowFooterView({
   secondButton,
@@ -9,18 +14,21 @@ export function CreateFlowFooterView({
   proportionBarVariant: proportionBarVariantProp,
   onBackClick,
   className = "",
+  contentMaxClass = CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS,
   footerAriaLabel,
 }: CreateFlowFooterProps) {
   const proportionBarVariant = proportionBarVariantProp ?? "default";
   return (
     <footer
-      className={`bg-black w-full ${className}`}
+      className={`relative bg-black w-full pb-[env(safe-area-inset-bottom,0px)] ${className}`}
       role="contentinfo"
       aria-label={footerAriaLabel}
     >
-      {/* Progress Bar - Top */}
+      <div className={CREATE_FLOW_FOOTER_SCRIM_CLASS} aria-hidden />
+      <div className={CREATE_FLOW_PAGE_GUTTER_CLASS}>
+        <div className={`mx-auto w-full ${contentMaxClass}`}>
           {progressBar && (
-        <div className="px-[var(--spacing-measures-spacing-500,20px)] md:px-[var(--spacing-measures-spacing-1200,48px)] pt-[var(--spacing-measures-spacing-300,12px)]">
+            <div className="pt-[var(--spacing-measures-spacing-300,12px)]">
               <ProportionBar
                 progress={proportionBarProgress}
                 variant={proportionBarVariant}
@@ -28,9 +36,7 @@ export function CreateFlowFooterView({
             </div>
           )}
 
-      {/* Buttons Container */}
-      <div className="flex items-center justify-between mx-auto max-w-[639px] md:max-w-[1920px] px-[var(--spacing-measures-spacing-500,20px)] md:px-[var(--spacing-measures-spacing-1200,48px)] py-[var(--spacing-measures-spacing-300,12px)] gap-[var(--spacing-measures-spacing-300,12px)]">
-        {/* Back Button - Left */}
+          <div className="flex items-center justify-between py-[var(--spacing-measures-spacing-300,12px)] gap-[var(--spacing-measures-spacing-300,12px)]">
             <Button
               buttonType="ghost"
               palette="default"
@@ -42,9 +48,10 @@ export function CreateFlowFooterView({
               Back
             </Button>
 
-        {/* Second Button - Right */}
             {secondButton && <div className="flex-shrink-0">{secondButton}</div>}
           </div>
+        </div>
+      </div>
     </footer>
   );
 }

app/components/navigation/CreateFlowTopNav/CreateFlowTopNav.view.tsx

@@ -5,6 +5,7 @@ import Button from "../../buttons/Button";
 import ListItem from "../../layout/ListItem";
 import Popover from "../../modals/Popover";
 import type { CreateFlowTopNavViewProps } from "./CreateFlowTopNav.types";
+import { CREATE_FLOW_PAGE_GUTTER_CLASS } from "../../../(app)/create/components/createFlowLayoutTokens";
 
 const outlineButtonClass =
   "md:!text-x-small-label !text-xx-small-label !px-[var(--spacing-scale-006,6px)] md:!px-[var(--spacing-scale-008,8px)] !py-[6px] md:!py-[8px] !border md:!border-[1.5px]";
@@ -229,7 +230,7 @@ export function CreateFlowTopNavView({
       aria-label={bannerAriaLabel}
     >
       <nav
-        className="flex items-center justify-between mx-auto max-w-[639px] md:max-w-[1920px] px-[var(--spacing-measures-spacing-500,20px)] md:px-[48px] py-[var(--spacing-measures-spacing-300,12px)] md:py-[var(--spacing-measures-spacing-016,16px)]"
+        className={`flex items-center justify-between mx-auto w-full max-w-[1920px] ${CREATE_FLOW_PAGE_GUTTER_CLASS} py-[var(--spacing-measures-spacing-300,12px)] md:py-[var(--spacing-measures-spacing-016,16px)]`}
         role="navigation"
         aria-label={navAriaLabel}
       >

tests/components/CreateFlowFooter.test.tsx

@@ -86,4 +86,17 @@ describe("CreateFlowFooter (behavioral tests)", () => {
     expect(buttons).toHaveLength(1);
     expect(buttons[0]).toHaveTextContent("Back");
   });
+
+  it("constrains the action row to the step content max-width", () => {
+    const { container } = render(
+      <CreateFlowFooter contentMaxClass="w-full min-w-0 lg:max-w-[640px]" />,
+    );
+    const footer = screen.getByRole("contentinfo", {
+      name: "Create Flow Footer",
+    });
+    expect(footer.className).toContain("pb-[env(safe-area-inset-bottom,0px)]");
+    expect(
+      container.querySelector('[class*="lg:max-w-[640px]"]'),
+    ).not.toBeNull();
+  });
 });

tests/unit/createFlowLayoutTokens.test.ts

@@ -3,19 +3,35 @@ import {
   CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS,
   CREATE_FLOW_MD_UP_GRID_CELL_CLASS,
   CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS,
+  CREATE_FLOW_WIDE_MAX_CLASS,
   CREATE_FLOW_MD_CENTERED_MAIN_CLASS,
   CREATE_FLOW_MD_CENTERED_SHELL_CLASS,
+  CREATE_FLOW_PAGE_GUTTER_CLASS,
+  CREATE_FLOW_VIEWPORT_FRAME_CLASS,
+  getCreateFlowContentMaxClass,
 } from "../../app/(app)/create/components/createFlowLayoutTokens";
 
 describe("createFlowLayoutTokens", () => {
   it("exports create-flow column and two-column max class strings", () => {
     expect(CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS).toBe(
-      "w-full min-w-0 md:max-w-[640px]",
+      "w-full min-w-0 lg:max-w-[640px]",
     );
     expect(CREATE_FLOW_MD_UP_GRID_CELL_CLASS).toBe(
-      "w-full min-w-0 md:mx-auto md:max-w-[640px]",
+      "w-full min-w-0 lg:mx-auto lg:max-w-[640px]",
     );
-    expect(CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS).toBe("md:max-w-[1328px]");
+    expect(CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS).toBe(
+      "w-full min-w-0 lg:max-w-[1328px]",
+    );
+    expect(CREATE_FLOW_WIDE_MAX_CLASS).toBe("w-full min-w-0 lg:max-w-[1440px]");
+  });
+
+  it("uses one gutter scale across the six viewport bands", () => {
+    expect(CREATE_FLOW_PAGE_GUTTER_CLASS).toBe("px-5 md:px-12 lg:px-16");
+  });
+
+  it("sizes the wizard frame with dynamic viewport height", () => {
+    expect(CREATE_FLOW_VIEWPORT_FRAME_CLASS).toContain("h-dvh");
+    expect(CREATE_FLOW_VIEWPORT_FRAME_CLASS).toContain("max-h-dvh");
   });
 
   it("centers lockup+card and card-stack steps in the nav–footer band from md", () => {
@@ -24,4 +40,25 @@ describe("createFlowLayoutTokens", () => {
     );
     expect(CREATE_FLOW_MD_CENTERED_SHELL_CLASS).toBe("md:my-auto md:pt-0");
   });
+
+  it("aligns the action bar max-width with the step content column", () => {
+    expect(
+      getCreateFlowContentMaxClass({ step: "community-name" }),
+    ).toBe(CREATE_FLOW_MD_UP_COLUMN_MAX_CLASS);
+    expect(
+      getCreateFlowContentMaxClass({ step: "community-structure" }),
+    ).toBe(CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS);
+    expect(
+      getCreateFlowContentMaxClass({ step: "communication-methods" }),
+    ).toBe(CREATE_FLOW_WIDE_MAX_CLASS);
+    expect(
+      getCreateFlowContentMaxClass({ step: "final-review" }),
+    ).toBe(CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS);
+    expect(
+      getCreateFlowContentMaxClass({
+        step: "informational",
+        isTemplateReview: true,
+      }),
+    ).toBe(CREATE_FLOW_TWO_COLUMN_MAX_WIDTH_CLASS);
+  });
 });

tests/unit/flowSteps.test.ts

@@ -10,6 +10,7 @@ import {
   resolveCreateFlowBackTarget,
   shouldOfferCreateFlowSaveAndExit,
   isDirectTemplateReviewEntry,
+  createFlowStepUsesSelectSplitScroll,
   TEMPLATES_FACET_RECOMMEND_QUERY,
   TEMPLATES_FACET_RECOMMEND_VALUE,
   TEMPLATE_REVIEW_FROM_CREATE_FLOW_QUERY,
@@ -221,4 +222,14 @@ describe("flowSteps", () => {
     ).toBe(false);
     expect(isDirectTemplateReviewEntry(null)).toBe(false);
   });
+
+  it("uses split-column scroll for select, right-rail, and stakeholders", () => {
+    expect(createFlowStepUsesSelectSplitScroll("community-structure")).toBe(
+      true,
+    );
+    expect(createFlowStepUsesSelectSplitScroll("confirm-stakeholders")).toBe(
+      true,
+    );
+    expect(createFlowStepUsesSelectSplitScroll("community-name")).toBe(false);
+  });
 });