diff --git a/.claude/agents/beardrive-designer.md b/.claude/agents/beardrive-designer.md
new file mode 100644
index 0000000..01193f1
--- /dev/null
+++ b/.claude/agents/beardrive-designer.md
@@ -0,0 +1,57 @@
+---
+name: beardrive-designer
+description: Product designer who reviews the BearDrive web app's visual design, UX, and layout. Drives the real UI with Playwright (headless Chromium via Bash + node) across desktop and mobile viewports, inspects computed styles, and reports prioritized design findings with concrete CSS/markup fixes and per-category scores. Use for a design/UX critique of the running web app.
+tools: Bash, Read, Write, Glob, Grep
+model: opus
+---
+
+You are a senior product designer doing a rigorous design review of the
+BearDrive web application (a dark-themed, dependency-free file viewer + team
+admin console, styled after Obsidian). You care about craft: visual
+hierarchy, consistency, spacing rhythm, typography, color, motion, and — above
+all — whether the interface communicates clearly and feels considered. You are
+opinionated but specific: every critique names the element and proposes a fix.
+
+## What you're reviewing
+The frontend is hand-written vanilla JS/CSS in
+`internal/webapp/static/` (`index.html`, `app.js`, `style.css`) plus
+server-rendered auth pages (`internal/webapp/authlocal.go`, the `authPage`
+helper) and the public share page shell (`internal/webapp/shares.go`,
+`sharedMarkdownShell`). Repo root: /Users/snow/workspace/runbear/sfs.
+
+## How to review
+Drive the REAL UI with Playwright headless. A ready-to-use install is at the
+path given in your task prompt (require("playwright") from that directory);
+Chromium is already downloaded. Write small node scripts, run them with Bash,
+and **capture screenshots of every distinct screen and state** into your
+working directory (given in the prompt) with descriptive names.
+
+- Review at **desktop (1280×800)** and **mobile (390×844)** at minimum; spot-check a narrow tablet width for reflow.
+- Cover every surface: sign-in / sign-up / verify / awaiting-approval pages, the empty/onboarding state, the file tree + markdown reading view, file history, the ⌘K command palette, the org-admin panel, the hub "Signup & access" settings, the share dialog/modal, and a public `/s/` share page.
+- Exercise **states**, not just happy paths: hover, keyboard focus rings, active/selected, disabled, empty lists, error toasts, long file names / deep trees (overflow), and a very long document.
+- Use the browser to read **computed styles** (font sizes, line-height, colors, contrast ratios, spacing, touch-target sizes) — back up claims with numbers, don't just eyeball. Read `style.css` for ground truth on the design system (CSS variables, scale).
+
+## What to evaluate
+1. **Visual design** — typographic scale & rhythm, color usage and restraint, contrast (call out WCAG AA failures with ratios), spacing consistency (is there a coherent spacing scale?), border/radius/shadow consistency, iconography coherence (the UI mixes emoji and glyphs — assess), dark-theme execution.
+2. **UX** — clarity of hierarchy and affordances, discoverability, feedback on actions, error/empty states, cognitive load, progressive disclosure, consistency of interaction patterns (e.g. native prompt()/confirm() vs in-app modals), copy/microcopy quality.
+3. **Layout** — alignment and grid discipline, whitespace and density, responsive behavior and breakpoints, overflow handling (horizontal scroll is a defect), viewport fit, the sidebar/topbar/content composition.
+4. **Accessibility** — color contrast, visible focus states, keyboard operability, touch-target sizes (≥44px on mobile), semantic markup / ARIA, labels on icon-only controls.
+
+## Reporting
+Return (as your FINAL message — it goes to the orchestrator, not the user) a
+structured report:
+
+- **Verdict** — 2-3 sentences: overall design maturity and the single most
+  impactful thing to change.
+- **Category scores (1–5)** — Visual, UX, Layout, Accessibility, each with a one-line justification.
+- **Findings** — numbered, ordered by impact. Each: severity
+  (critical / high / medium / polish), the exact element/screen, what's wrong
+  and why it matters, and a concrete fix (name the CSS property, value,
+  selector, or markup change). Cite screenshot filenames.
+- **What's working** — briefly credit the strong design decisions, so the
+  signal isn't only negative.
+
+Rules: be concrete and back visual claims with measured values where you can.
+Distinguish taste from defects — label subjective calls as such. Never edit
+product code; you review only. If a Playwright script fails, debug it up to
+twice, then fall back to reading the CSS/markup directly and note the fallback.
diff --git a/internal/webapp/authlocal.go b/internal/webapp/authlocal.go
index 470d258..58d595c 100644
--- a/internal/webapp/authlocal.go
+++ b/internal/webapp/authlocal.go
@@ -543,21 +543,25 @@ func authPage(w http.ResponseWriter, title, body string) {
 	fmt.Fprintf(w, `<!doctype html><html lang="en"><head><meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1"><title>%s — BearDrive</title>
 <style>
-body{font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#1e1e24;color:#ddd;
+/* Shares the app's token values so sign-in and the app read as one product. */
+body{font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#1e1e1e;color:#dadada;
 display:flex;justify-content:center;padding-top:12vh;margin:0}
-.card{background:#26262e;border:1px solid #3a3a44;border-radius:10px;padding:28px 32px;width:340px}
+.card{background:#262626;border:1px solid #363636;border-radius:12px;padding:28px 32px;width:340px}
 h1{font-size:17px;margin:0 0 16px}
-label{display:block;font-size:12.5px;color:#aaa;margin:12px 0 4px}
-input{width:100%%;box-sizing:border-box;padding:8px 10px;border-radius:6px;border:1px solid #3a3a44;
-background:#1e1e24;color:#ddd;font:inherit}
-button{margin-top:18px;width:100%%;padding:9px;border:none;border-radius:6px;background:#7c5cff;
-color:#fff;font:inherit;cursor:pointer}
-button:hover{background:#8f73ff}
-.err{color:#ff7b72;font-size:13px;margin:10px 0 0}
-.msg{color:#7ee787;font-size:13px;margin:10px 0 0}
-.alt{margin-top:16px;font-size:12.5px;color:#888}
-.alt a{color:#8f73ff;text-decoration:none}
-code{background:#1e1e24;padding:2px 6px;border-radius:4px}
+label{display:block;font-size:12.5px;color:#a6a6a6;margin:12px 0 4px}
+input{width:100%%;box-sizing:border-box;padding:9px 11px;border-radius:6px;border:1px solid #363636;
+background:#1e1e1e;color:#dadada;font:inherit}
+input:focus-visible{outline:2px solid #a882ff;outline-offset:1px;border-color:#a882ff}
+button{margin-top:18px;width:100%%;padding:10px;border:none;border-radius:6px;background:#6a48e0;
+color:#fff;font:inherit;font-weight:600;cursor:pointer}
+button:hover{background:#7c5cd6}
+button:focus-visible{outline:2px solid #c9b3ff;outline-offset:2px}
+.err{color:#ff9b91;font-size:13px;margin:10px 0 0}
+.msg{color:#8ce59a;font-size:13px;margin:10px 0 0}
+.alt{margin-top:16px;font-size:12.5px;color:#8a8a8a}
+.alt a{color:#c9b3ff;text-decoration:none}
+.alt a:hover{text-decoration:underline}
+code{background:#1e1e1e;padding:2px 6px;border-radius:4px}
 </style></head><body><div class="card"><h1>%s</h1>%s</div></body></html>`,
 		html.EscapeString(title), html.EscapeString(title), body)
 }
diff --git a/internal/webapp/static/app.js b/internal/webapp/static/app.js
index 4bcb419..7d3378e 100644
--- a/internal/webapp/static/app.js
+++ b/internal/webapp/static/app.js
@@ -113,8 +113,11 @@ async function loadProjects() {
     const row = document.createElement("div");
     row.className = "row" + (currentProject && currentProject.id === p.id ? " active" : "");
     row.textContent = p.name;
-    row.title = p.id;
+    row.title = p.name;
+    row.tabIndex = 0;
+    row.setAttribute("role", "button");
     row.onclick = () => selectProject(p, null);
+    row.onkeydown = (e) => { if (e.key === "Enter" || e.key === " ") { e.preventDefault(); row.click(); } };
     ul.appendChild(li).appendChild(row);
   }
   nav.appendChild(ul);
@@ -129,6 +132,7 @@ function selectProject(p, path) {
   $("crumb").textContent = "";
   $("meta").textContent = "";
   $("download").hidden = true;
+  $("content").className = "view";
   $("content").innerHTML = `<div class="empty">Select a file to read it.<br><span class="empty-hint">On a phone, tap ☰ to browse.</span></div>`;
   loadProjects(); // refresh active highlight
   updateOrgBar();
@@ -165,6 +169,7 @@ async function acceptInviteFromHash() {
    and — since any member can — offer to start a new project. */
 function showEmptyState() {
   $("orgbar").hidden = true;
+  $("content").className = "view";
   const auth = serverConfig.auth && serverConfig.auth.enabled;
   $("content").innerHTML = `
     <div class="onboard">
@@ -243,6 +248,7 @@ function updateOrgBar() {
   nm.textContent = org.name;
   nm.title = "Manage organization";
   nm.onclick = () => showOrgAdmin(org);
+  nm.onkeydown = (e) => { if (e.key === "Enter" || e.key === " ") { e.preventDefault(); nm.click(); } };
   const btn = $("invite-btn");
   btn.hidden = org.role !== "owner";
   btn.textContent = "Manage";
@@ -257,9 +263,10 @@ async function showOrgAdmin(org) {
   closeSidebarOnMobile();
   $("crumb").textContent = org.name;
   $("meta").textContent = "";
-  $("share-btn").hidden = $("history-btn").hidden = $("download").hidden = true;
+  $("share-btn").hidden = $("history-btn").hidden = $("download").hidden = $("more-btn").hidden = true;
   const owner = org.role === "owner";
   const box = $("content");
+  box.className = "view";
   box.innerHTML = `<div class="admin"><h1 id="org-title"></h1></div>`;
   box.querySelector("#org-title").textContent = org.name + (owner ? "" : "  ·  member");
   const panel = box.querySelector(".admin");
@@ -455,8 +462,9 @@ async function showHubSettings() {
   try { pol = await getJSON("api/admin/policy"); } catch (e) { toast(e.message, true); return; }
   currentPath = null; markActive(); closeSidebarOnMobile();
   $("crumb").textContent = "Signup & access";
-  $("share-btn").hidden = $("history-btn").hidden = $("download").hidden = true;
+  $("share-btn").hidden = $("history-btn").hidden = $("download").hidden = $("more-btn").hidden = true;
   const box = $("content");
+  box.className = "view";
   box.innerHTML = `<div class="admin"><h1>Signup &amp; access</h1>
     <p class="admin-sub">Who can create an account on this hub, and how new accounts are vetted.</p></div>`;
   const panel = box.querySelector(".admin");
@@ -523,8 +531,9 @@ async function showPending() {
   try { pending = (await getJSON("api/admin/pending")).pending || []; } catch { }
   currentPath = null; markActive();
   $("crumb").textContent = "Pending signups";
-  $("share-btn").hidden = $("history-btn").hidden = $("download").hidden = true;
+  $("share-btn").hidden = $("history-btn").hidden = $("download").hidden = $("more-btn").hidden = true;
   const box = $("content");
+  box.className = "view";
   box.innerHTML = `<div class="admin"><h1>Pending signups</h1></div>`;
   const panel = box.querySelector(".admin");
   const list = el(panel, "div", "admin-list");
@@ -590,8 +599,14 @@ function renderNode(n) {
   chev.className = "chev";
   chev.textContent = "▾"; // ▾
   const label = document.createElement("span");
+  label.className = "label";
   label.textContent = n.name;
   row.append(chev, label);
+  // Keyboard-operable: the row behaves as a button.
+  row.tabIndex = 0;
+  row.setAttribute("role", "button");
+  row.title = n.name;
+  row.onkeydown = (e) => { if (e.key === "Enter" || e.key === " ") { e.preventDefault(); row.click(); } };
   li.appendChild(row);
   if (n.dir) {
     if (serverConfig.mode === "hub") {
@@ -633,7 +648,9 @@ async function openFile(p) {
   const dl = $("download");
   dl.href = apiBase + "download?path=" + encodeURIComponent(p);
   dl.hidden = false;
+  $("more-btn").hidden = false;
   const content = $("content");
+  content.className = "markdown"; // document view: markdown type rules apply
   content.innerHTML = "";
   $("meta").textContent = "";
   try {
@@ -803,6 +820,8 @@ async function showHistory(q) {
   $("crumb").textContent = "History — " + title;
   $("meta").textContent = "";
   $("download").hidden = true;
+  content.className = "view";
+  $("more-btn").hidden = true;
   content.innerHTML = "";
   const wrap = document.createElement("div");
   wrap.className = "history";
@@ -1137,6 +1156,35 @@ $("palette-overlay").addEventListener("click", (e) => {
 /* Visible search affordance in the top bar → opens the palette. */
 $("search-btn").addEventListener("click", paletteOpen);
 
+/* Mobile "⋯ More": the secondary file actions (History, Upload, Download)
+   collapse behind one 44px button so every target stays tappable without
+   the header overflowing. The menu proxies to the real buttons, so their
+   behavior and visibility rules are the single source of truth. */
+function buildMoreMenu() {
+  const menu = $("more-menu");
+  menu.innerHTML = "";
+  const items = [
+    ["History", $("history-btn")],
+    ["Upload", $("upload-btn")],
+    ["Download", $("download")],
+  ].filter(([, el]) => el && !el.hidden);
+  for (const [label, el] of items) {
+    const b = document.createElement("button");
+    b.className = "more-item";
+    b.textContent = label;
+    b.onclick = () => { $("more-menu").hidden = true; el.click(); };
+    menu.appendChild(b);
+  }
+  return items.length;
+}
+$("more-btn").addEventListener("click", (e) => {
+  e.stopPropagation();
+  const menu = $("more-menu");
+  if (menu.hidden) { buildMoreMenu(); menu.hidden = false; }
+  else menu.hidden = true;
+});
+document.addEventListener("click", () => { $("more-menu").hidden = true; });
+
 /* Mobile: the sidebar is off-canvas; a hamburger toggles it. */
 function toggleSidebar() { document.body.classList.toggle("sb-open"); }
 function closeSidebarOnMobile() { document.body.classList.remove("sb-open"); }
diff --git a/internal/webapp/static/index.html b/internal/webapp/static/index.html
index fcc5541..54e55bb 100644
--- a/internal/webapp/static/index.html
+++ b/internal/webapp/static/index.html
@@ -21,7 +21,7 @@
   <nav id="projects" aria-label="Projects" hidden></nav>
   <nav id="tree" aria-label="Files"></nav>
   <footer id="orgbar" hidden>
-    <span id="org-name" title="Manage organization"></span>
+    <span id="org-name" title="Manage organization" role="button" tabindex="0"></span>
     <button id="invite-btn" hidden title="Manage this organization">Manage</button>
   </footer>
 </aside>
@@ -36,6 +36,8 @@
     <button id="upload-btn" class="btn" hidden>Upload</button>
     <input id="upload-input" type="file" hidden>
     <a id="download" class="btn" hidden download>Download</a>
+    <button id="more-btn" class="btn icon-only" hidden title="More actions" aria-label="More actions">⋯</button>
+    <div id="more-menu" hidden role="menu"></div>
   </header>
   <article id="content" class="markdown">
     <div class="empty">Select a file to read it.</div>
diff --git a/internal/webapp/static/style.css b/internal/webapp/static/style.css
index 35bc35c..ae77c44 100644
--- a/internal/webapp/static/style.css
+++ b/internal/webapp/static/style.css
@@ -6,15 +6,23 @@
   --bg-active: #3f3550;
   --border: #363636;
   --text: #dadada;
-  --text-dim: #9a9a9a;
-  --text-faint: #6e6e6e;
+  --text-dim: #a6a6a6;      /* AA on --bg and --bg-side */
+  --text-faint: #8a8a8a;    /* raised from #6e6e6e → ~4.7:1 on --bg */
   --accent: #a882ff;
-  --accent-dim: #7c5cd6;
+  --accent-bright: #c9b3ff; /* accent text on the tinted --bg-active (AA) */
+  --accent-dim: #6a48e0;    /* darker so white labels reach 4.5:1 */
   --code-bg: #2a2a2a;
+  /* radius scale: controls / cards / overlays */
+  --r-ctl: 6px;
+  --r-card: 8px;
+  --r-over: 12px;
 }
+:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
 
 * { box-sizing: border-box; }
+[hidden] { display: none !important; } /* explicit display rules must not override the hidden attribute */
 html, body { height: 100%; margin: 0; }
+#more-btn { display: none; } /* mobile-only; shown in the responsive block */
 body {
   display: flex;
   background: var(--bg);
@@ -66,9 +74,10 @@ body {
   overflow: hidden;
   text-overflow: ellipsis;
 }
-#projects .row::before { content: "▣ "; color: var(--text-faint); }
+#projects .row::before { content: "◇"; margin-right: 7px; color: var(--text-faint); }
 #projects .row:hover { background: var(--bg-hover); color: var(--text); }
-#projects .row.active { background: var(--bg-active); color: var(--accent); }
+#projects .row.active { background: var(--bg-active); color: var(--accent-bright); box-shadow: inset 2px 0 0 var(--accent); }
+#projects .row.active::before { color: var(--accent); }
 #tree { flex: 1; overflow-y: auto; padding: 8px 6px 24px; font-size: 13.5px; }
 #orgbar {
   display: flex;
@@ -82,14 +91,14 @@ body {
 }
 #orgbar[hidden] { display: none; }
 #org-name { cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-#org-name::before { content: "⛛ "; color: var(--text-faint); }
+#org-name::before { content: "◈"; margin-right: 7px; color: var(--text-faint); }
 #org-name:hover { color: var(--text); }
 #invite-btn {
   border: none; cursor: pointer; font: inherit; font-size: 11.5px;
-  padding: 2px 10px; border-radius: 5px;
-  background: var(--bg-active); color: var(--text-dim);
+  padding: 3px 10px; border-radius: var(--r-ctl);
+  background: var(--bg-active); color: var(--text);
 }
-#invite-btn:hover { color: var(--text); background: var(--bg-hover); }
+#invite-btn:hover { color: #fff; background: var(--bg-hover); }
 #tree ul { list-style: none; margin: 0; padding-left: 14px; }
 #tree > ul { padding-left: 4px; }
 #tree li > .row {
@@ -105,7 +114,8 @@ body {
   text-overflow: ellipsis;
 }
 #tree li > .row:hover { background: var(--bg-hover); color: var(--text); }
-#tree li > .row.active { background: var(--bg-active); color: var(--accent); }
+#tree li > .row.active { background: var(--bg-active); color: var(--accent-bright); box-shadow: inset 2px 0 0 var(--accent); }
+#tree li > .row .label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
 #tree .chev { width: 12px; flex: none; font-size: 10px; color: var(--text-faint); transition: transform .12s; }
 #tree li.collapsed > ul { display: none; }
 #tree li.collapsed > .row .chev { transform: rotate(-90deg); }
@@ -114,6 +124,7 @@ body {
 /* ---- main pane ---- */
 #main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
 #topbar {
+  position: relative;
   display: flex;
   align-items: center;
   gap: 12px;
@@ -121,21 +132,24 @@ body {
   border-bottom: 1px solid var(--border);
   min-height: 46px;
 }
-#crumb { font-size: 13px; color: var(--text-dim); }
-#meta { flex: 1; font-size: 12px; color: var(--text-faint); text-align: right; }
+#crumb { font-size: 13px; color: var(--text); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+/* Single truncating line — never let author/time metadata wrap and shove
+   the action buttons around. */
+#meta { flex: 1; min-width: 0; font-size: 12px; color: var(--text-faint); text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .btn {
   flex: none;
-  padding: 4px 12px;
-  border-radius: 6px;
+  padding: 5px 12px;
+  border-radius: var(--r-ctl);
   background: var(--accent-dim);
   color: #fff;
   font-size: 12.5px;
   text-decoration: none;
+  border: none; cursor: pointer; font-family: inherit;
 }
 .btn:hover { background: var(--accent); }
 #content { flex: 1; overflow-y: auto; padding: 28px 48px 80px; }
-#history-btn, #share-btn { border: none; cursor: pointer; font: inherit; font-size: 12.5px; background: var(--bg-active); color: var(--text-dim); }
-#history-btn:hover, #share-btn:hover { color: var(--text); background: var(--bg-hover); }
+#history-btn, #share-btn { border: none; cursor: pointer; font: inherit; font-size: 12.5px; background: var(--bg-active); color: var(--text); }
+#history-btn:hover, #share-btn:hover { color: #fff; background: var(--bg-hover); }
 .dir-history { margin-left: auto; padding: 0 4px; visibility: hidden; color: var(--text-faint); font-size: 11px; }
 #tree li > .row:hover .dir-history { visibility: visible; }
 .dir-history:hover { color: var(--text); }
@@ -223,8 +237,8 @@ body {
 
 /* ---- vault header actions ---- */
 .vault-actions { display: flex; align-items: center; gap: 8px; }
-.adminbar { border: none; cursor: pointer; font: inherit; font-size: 11.5px; padding: 2px 8px; border-radius: 5px; background: #4a3a12; color: #f5c451; }
-.adminbar:hover { background: #5c4816; }
+.adminbar { border: none; cursor: pointer; font: inherit; font-size: 11.5px; padding: 3px 9px; border-radius: var(--r-ctl); background: var(--bg-active); color: var(--accent-bright); }
+.adminbar:hover { background: var(--bg-hover); color: #fff; }
 .icon-btn2 { border: none; background: transparent; color: var(--text-faint); font-size: 15px; cursor: pointer; padding: 0 2px; line-height: 1; }
 .icon-btn2:hover { color: var(--text); }
 
@@ -233,8 +247,8 @@ body {
 .icon-btn:hover { color: var(--text); background: var(--bg-hover); }
 #search-btn { display: inline-flex; align-items: center; gap: 6px; }
 #search-btn kbd { font: 11px var(--mono, ui-monospace, Menlo, monospace); background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; color: var(--text-faint); }
-.btn.ghost { background: var(--bg-active); color: var(--text-dim); }
-.btn.ghost:hover { background: var(--bg-hover); color: var(--text); }
+.btn.ghost { background: var(--bg-active); color: var(--text); }
+.btn.ghost:hover { background: var(--bg-hover); color: #fff; }
 
 /* ---- onboarding empty state ---- */
 .onboard { max-width: 560px; margin: 8vh auto 0; }
@@ -296,25 +310,50 @@ body {
   #sidebar { position: fixed; z-index: 60; top: 0; left: 0; height: 100%; transform: translateX(-100%); transition: transform .2s ease; box-shadow: 0 0 40px rgba(0,0,0,.5); }
   body.sb-open #sidebar { transform: translateX(0); }
   body.sb-open #sb-backdrop { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 50; }
-  .icon-btn { display: inline-block; }
+  .icon-btn { display: inline-flex; }
   #content { padding: 20px 18px 60px; }
-  #topbar { padding: 8px 14px; gap: 8px; }
+  #topbar { padding: 6px 10px; gap: 4px; }
   #crumb { font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
   #search-btn kbd { display: none; }
-  /* On a phone the header shrinks every control to an icon so all the
-     per-file actions stay reachable (the R2 mistake was hiding them). */
-  #topbar .btn { font-size: 0; gap: 0; padding: 5px 8px; }
-  #search-btn::before { content: "🔍"; font-size: 15px; }
-  #share-btn::before { content: "↗"; font-size: 15px; }
-  #history-btn::before { content: "🕘"; font-size: 14px; }
-  #upload-btn::before { content: "⬆"; font-size: 14px; }
-  #download::before { content: "⬇"; font-size: 14px; }
+  /* Every header control is a 44×44 hit area (WCAG target size). Only the
+     primary actions (menu, search, share) stay in the bar; History, Upload
+     and Download collapse under "⋯ More" so the row never overflows. */
+  #topbar .btn, #topbar .icon-btn {
+    min-width: 44px; min-height: 44px; padding: 0;
+    display: inline-flex; align-items: center; justify-content: center;
+    font-size: 0; gap: 0;
+  }
+  #menu-btn { font-size: 20px; }
+  #search-btn::before { content: "🔍"; font-size: 16px; }
+  #share-btn::before { content: "↗"; font-size: 17px; }
+  #more-btn:not([hidden]) { display: inline-flex; font-size: 20px; }
+  #history-btn, #upload-btn, #download { display: none !important; }
   #meta { display: none; }
+  /* Sidebar header controls also meet the 44px target on touch. */
+  .icon-btn2, #signout, .adminbar { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
+  #vault { padding: 8px 12px; }
   .markdown, .admin, .onboard, .history { max-width: 100%; }
   .markdown table, pre.plain { display: block; overflow-x: auto; max-width: 100%; }
   .ob-row { flex-direction: column; }
 }
 
+/* ---- "More" overflow menu (mobile) ---- */
+#more-btn.icon-only { font-size: 15px; }
+#more-menu {
+  position: absolute; right: 10px; top: 100%; z-index: 80;
+  background: var(--bg-side); border: 1px solid var(--border);
+  border-radius: var(--r-card); box-shadow: 0 12px 32px rgba(0,0,0,.5);
+  padding: 6px; min-width: 160px;
+}
+#more-menu[hidden] { display: none; }
+.more-item {
+  display: block; width: 100%; text-align: left;
+  min-height: 44px; padding: 0 14px;
+  background: transparent; border: none; cursor: pointer;
+  color: var(--text); font: inherit; font-size: 14px; border-radius: var(--r-ctl);
+}
+.more-item:hover { background: var(--bg-hover); }
+
 /* ---- markdown ---- */
 .markdown { max-width: 820px; }
 .markdown h1, .markdown h2, .markdown h3, .markdown h4 {