diff --git a/apps/hq-web/src/Layout.tsx b/apps/hq-web/src/Layout.tsx
index 550bb9f..d975c41 100644
--- a/apps/hq-web/src/Layout.tsx
+++ b/apps/hq-web/src/Layout.tsx
@@ -2,7 +2,7 @@ import { useEffect, useMemo, useRef, useState } from 'react'
 import { Navigate, NavLink, Outlet, useLocation, useNavigate } from 'react-router-dom'
 import { LogOut, Menu, Search, UserRound } from 'lucide-react'
 import {
-  avatarColors, Badge, CommandPalette, initials, ThemeSwitcher, type PaletteItem,
+  avatarColors, Badge, CommandPalette, initials, ModeToggle, type PaletteItem,
 } from '@sims/ui'
 import { clearSession, displayName, getClients, getEmailStatus, getReminders, hasSession, role } from './api'
 import { NAV_GROUPS } from './nav'
@@ -204,7 +204,7 @@ export function Layout() {
               {gmail === 'ok' ? 'Gmail' : 'Gmail disconnected'}
             </span>
           )}
-          <ThemeSwitcher />
+          <ModeToggle />
           {/* D18 WS-E: the user chip opens a small menu — Profile / Logout. */}
           <span
             className="hq-user-wrap"
diff --git a/apps/hq-web/src/app.css b/apps/hq-web/src/app.css
index 6028178..42df51a 100644
--- a/apps/hq-web/src/app.css
+++ b/apps/hq-web/src/app.css
@@ -155,8 +155,8 @@
   .hq-search { min-width: 0; flex: 1; }
   .hq-search span { display: none; }
   .hq-user-name { display: none; }
-  .hq-content { padding: 4px 12px 16px; }
-  .wf-page { padding: 16px 4px 24px; }
+  .hq-content { padding: 8px 14px 20px; }
+  .wf-page { padding: 14px 2px 28px; }
 }
 /* Tables scroll inside their page rather than breaking the layout. */
 .hq-content { overflow-x: hidden; }
@@ -275,3 +275,48 @@ table.wf tbody tr[role='button']:focus-visible td:first-child { box-shadow: inse
   /* Stat cards go one-per-row so numbers stay legible. */
   .wf-stats { grid-template-columns: 1fr 1fr; }
 }
+
+/* ============================================================================
+   Mobile experience pass (D26) — the accent swatches are gone from the top bar
+   (now in Settings > Appearance), and phones get real breathing room. Targets
+   ≤640px: the cramped-phone width the user tested on.
+   ============================================================================ */
+@media (max-width: 640px) {
+  /* Top bar: search is the star, everything else compact. */
+  .hq-top { gap: 8px; padding: 8px 12px; }
+  .hq-search { flex: 1; min-width: 0; height: 40px; font-size: 15px; }
+  .hq-search kbd { display: none; }             /* the Ctrl-K hint is desktop-only */
+  .hq-pill { display: none; }                    /* Gmail status shows in the banner/Settings, not the phone bar */
+  .mode { padding: 6px 9px; font-size: 15px; }
+  .hq-user .hq-user-name { display: none; }      /* avatar + role only */
+  .hq-user { padding: 4px 6px; gap: 5px; }
+
+  /* Pages: generous, single-column, full-width children. */
+  .wf-page { padding: 14px 14px 96px; }          /* bottom room so content clears the thumb zone */
+  .wf-card { padding: 14px; }
+  .wf-page > *, .wf-card { max-width: 100% !important; }
+
+  /* Toolbars & filter chips wrap with air, don't jam into one line. */
+  .wf-toolbar { flex-wrap: wrap; gap: 8px; row-gap: 10px; }
+  .wf-toolbar > .wf, .wf-toolbar select.wf, .wf-toolbar input.wf { flex: 1 1 auto; min-width: 140px; }
+  .wf-chips { flex-wrap: wrap; gap: 6px; }
+
+  /* Inputs full width & tall enough to tap; 16px kills iOS focus-zoom (already set globally). */
+  input.wf, select.wf, textarea.wf { width: 100%; min-height: 42px; }
+  .wf-field { width: 100%; }
+
+  /* Stats: two-up so the numbers stay big and readable. */
+  .wf-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
+
+  /* Dialogs already bottom-sheet (earlier pass); keep them roomy. */
+  .wf-dialog-body { padding: 14px 16px; }
+
+  /* Tables scroll, with a subtle hint that there's more sideways. */
+  table.wf { font-size: 13.5px; }
+  table.wf th, table.wf td { padding: 9px 10px; white-space: nowrap; }
+
+  /* The New-Document composer: every container fills the screen (no 340px caps). */
+  .wf-page .composer-search, .wf-page .composer-line { max-width: 100% !important; width: 100%; }
+  .wf-page .composer-line { flex-direction: column; align-items: stretch; }
+  .wf-page .composer-line > * { width: 100%; }
+}
diff --git a/apps/hq-web/src/pages/NewDocument.tsx b/apps/hq-web/src/pages/NewDocument.tsx
index a911851..b100520 100644
--- a/apps/hq-web/src/pages/NewDocument.tsx
+++ b/apps/hq-web/src/pages/NewDocument.tsx
@@ -180,7 +180,7 @@ export function NewDocument() {
             <Button onClick={() => { setClient(undefined); setQ(''); commit() }}>Change</Button>
           </Toolbar>
         ) : (
-          <div style={{ position: 'relative', maxWidth: 340 }}>
+          <div className="composer-search" style={{ position: 'relative', maxWidth: 340 }}>
             <input className="wf" placeholder="Type to search clients…" value={q} autoFocus onChange={(e) => setQ(e.target.value)} />
             {hits.length > 0 && (
               <div style={{ position: 'absolute', zIndex: 5, top: '100%', left: 0, right: 0, background: 'var(--bg-raised)', border: '1px solid var(--border)', borderRadius: 'var(--radius)', boxShadow: 'var(--shadow-lg)' }}>
@@ -222,7 +222,7 @@ export function NewDocument() {
         const editions = editionsOf(prices)
         const priceGap = warnings.some((w) => mod !== undefined && w.includes(mod.code))
         return (
-          <div key={i} className="wf-card" style={{ display: 'flex', gap: 10, flexWrap: 'wrap', alignItems: 'flex-end' }}>
+          <div key={i} className="wf-card composer-line" style={{ display: 'flex', gap: 10, flexWrap: 'wrap', alignItems: 'flex-end' }}>
             <Field label="Module">
               <select className="wf" value={l.moduleId}
                 onChange={(e) => {
diff --git a/packages/ui/src/ThemeSwitcher.tsx b/packages/ui/src/ThemeSwitcher.tsx
index 7cf9cc0..82ce869 100644
--- a/packages/ui/src/ThemeSwitcher.tsx
+++ b/packages/ui/src/ThemeSwitcher.tsx
@@ -11,7 +11,25 @@ const SWATCH: Record<Accent, string> = {
   amber: '#b97e10',
 }
 
-/** Compact mode toggle + accent picker; drops into any header. */
+/** Just the light/dark toggle — a single small button for the top bar. The full
+ *  accent picker lives in Settings → Appearance (keeps the header uncluttered). */
+export function ModeToggle() {
+  const [mode, setMode] = useState(getThemeMode())
+  return (
+    <button
+      type="button" className="mode" aria-label="Toggle light/dark theme"
+      onClick={() => {
+        const next = mode === 'light' ? 'dark' : 'light'
+        setThemeMode(next)
+        setMode(next)
+      }}
+    >
+      {mode === 'light' ? '☾' : '☀'}
+    </button>
+  )
+}
+
+/** Compact mode toggle + accent picker; drops into any header (used in Settings). */
 export function ThemeSwitcher() {
   const [mode, setMode] = useState(getThemeMode())
   const [accent, setAccentState] = useState(getAccent())