diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 9c5deac..b250bac 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -44,6 +44,8 @@ import { UserSettingsView } from './features/settings/UserSettingsView';
 import { AdminSettingsView } from './features/settings/AdminSettingsView';
 import { HelpView } from './features/help/HelpView';
 import { GroupsView } from './features/teams/GroupsView';
+import { useMobileActions } from './context/MobileActionContext';
+import { MobileHeaderMenu } from './components/MobileHeaderMenu';
 
 type ActiveTab =
   | 'triage'
@@ -129,6 +131,107 @@ export const App: React.FC = () => {
   // Mobile Navigation & Quick-Action State
   const [showMobileCapture, setShowMobileCapture] = useState(false);
   const [showMobileProfile, setShowMobileProfile] = useState(false);
+  const { isMenuOpen, setIsMenuOpen, closeMenu, setGroups } = useMobileActions();
+
+  useEffect(() => {
+    closeMenu();
+    if (activeTab === 'triage') {
+      setGroups([
+        {
+          id: 'triage-actions',
+          title: 'Schnellaktionen',
+          items: [
+            {
+              id: 'new-thought',
+              label: 'Neuen Gedanken erfassen',
+              icon: <Plus className="w-4 h-4" />,
+              variant: 'accent',
+              onClick: () => setShowMobileCapture(true),
+            },
+            {
+              id: 'refresh-deck',
+              label: 'Inbox aktualisieren',
+              icon: <RotateCcw className="w-4 h-4" />,
+              badge: stats.inboxCount,
+              onClick: () => refreshAll(),
+            },
+          ],
+        },
+        {
+          id: 'triage-nav',
+          title: 'Bereiche wechseln',
+          items: [
+            {
+              id: 'goto-tasks',
+              label: 'Aufgaben & Kanban',
+              icon: <CheckSquare className="w-4 h-4" />,
+              badge: stats.tasksOpenCount,
+              onClick: () => setActiveTab('tasks'),
+            },
+            {
+              id: 'goto-workspace',
+              label: 'Notizen & Workspace',
+              icon: <FileText className="w-4 h-4" />,
+              badge: stats.docsCount,
+              onClick: () => setActiveTab('workspace'),
+            },
+            {
+              id: 'goto-lists',
+              label: 'Einkaufslisten',
+              icon: <ShoppingCart className="w-4 h-4" />,
+              badge: stats.listsCount,
+              onClick: () => setActiveTab('lists'),
+            },
+            {
+              id: 'goto-groups',
+              label: 'Teams & Gruppen',
+              icon: <Users className="w-4 h-4" />,
+              onClick: () => setActiveTab('groups'),
+            },
+          ],
+        },
+      ]);
+    } else if (
+      activeTab === 'groups' ||
+      activeTab === 'user_settings' ||
+      activeTab === 'admin_settings' ||
+      activeTab === 'help'
+    ) {
+      setGroups([
+        {
+          id: 'subview-nav',
+          title: 'Navigation',
+          items: [
+            {
+              id: 'back-triage',
+              label: 'Zurück zur Triage (Startseite)',
+              icon: <Layers className="w-4 h-4" />,
+              variant: 'accent',
+              onClick: () => setActiveTab('triage'),
+            },
+            {
+              id: 'goto-tasks',
+              label: 'Zu den Aufgaben',
+              icon: <CheckSquare className="w-4 h-4" />,
+              onClick: () => setActiveTab('tasks'),
+            },
+            {
+              id: 'goto-workspace',
+              label: 'Zum Workspace',
+              icon: <FileText className="w-4 h-4" />,
+              onClick: () => setActiveTab('workspace'),
+            },
+            {
+              id: 'goto-lists',
+              label: 'Zu den Listen',
+              icon: <ShoppingCart className="w-4 h-4" />,
+              onClick: () => setActiveTab('lists'),
+            },
+          ],
+        },
+      ]);
+    }
+  }, [activeTab, stats.inboxCount, stats.tasksOpenCount, stats.docsCount, stats.listsCount]);
 
   // Mobile Web-App (PWA) Installation State
   const [isStandaloneApp, setIsStandaloneApp] = useState<boolean>(() => {
@@ -409,27 +512,50 @@ export const App: React.FC = () => {
   const isServerAdmin = user.role === 'admin';
   const roleLabel = isServerAdmin ? 'Server-Admin' : 'Mitglied';
 
+  const activeTabLabelMap: Record<ActiveTab, string> = {
+    triage: 'Triage',
+    tasks: 'Aufgaben',
+    workspace: 'Workspace',
+    lists: 'Listen',
+    groups: 'Teams & Gruppen',
+    user_settings: 'Einstellungen',
+    admin_settings: 'Administration',
+    help: 'Hilfe',
+  };
+
   return (
     <div className="min-h-screen bg-canvas text-main flex flex-col font-sans selection:bg-accent/30">
       {/* Top Header Bar: Floating on mobile, solid panel on desktop */}
       <header className="sticky top-0 z-30 bg-canvas/85 backdrop-blur-md sm:bg-panel sm:border-b sm:border-border sm:shadow-sm">
-        {/* Mobile Header: Floating Bar with Larger Logo Left (Triage Home) & Profile Avatar Right */}
+        {/* Mobile Header: Floating Bar with Logo Action Dropdown Left & Profile Avatar Right */}
         <div className="sm:hidden flex items-center justify-between h-14 px-4 pt-1">
           <button
             type="button"
             onClick={() => {
-              triggerHaptic(10);
-              setActiveTab('triage');
+              triggerHaptic(12);
+              setIsMenuOpen((prev) => !prev);
             }}
-            className="h-11 px-2 -ml-2 rounded-xl flex items-center gap-2.5 cursor-pointer select-none active:scale-95 transition-transform"
-            title="Zur Startseite (Triage)"
+            className={`min-h-[44px] px-2.5 -ml-2 rounded-xl flex items-center gap-2.5 cursor-pointer select-none active:scale-95 transition-all ${
+              isMenuOpen ? 'bg-panel border border-accent/40 shadow-sm' : 'hover:bg-panel/60'
+            }`}
+            title="Menü & Ansichts-Optionen öffnen"
           >
-            <div className="w-8 h-8 bg-accent text-on-accent rounded-xl shadow-sm flex items-center justify-center">
+            <div className="w-8 h-8 bg-accent text-on-accent rounded-xl shadow-sm flex items-center justify-center flex-shrink-0">
               <Brain className="w-4 h-4" />
             </div>
-            <span className="font-bold text-base text-main tracking-tight">
-              {authStatus.instanceName || 'MindSift'}
-            </span>
+            <div className="flex items-center gap-1.5">
+              <span className="font-bold text-base text-main tracking-tight">
+                {authStatus.instanceName || 'MindSift'}
+              </span>
+              <span className="text-[11px] font-semibold text-accent bg-accent/15 px-1.5 py-0.5 rounded-md">
+                {activeTabLabelMap[activeTab]}
+              </span>
+              <ChevronDown
+                className={`w-4 h-4 text-muted transition-transform duration-150 ${
+                  isMenuOpen ? 'rotate-180 text-accent' : ''
+                }`}
+              />
+            </div>
           </button>
 
           <div className="flex items-center gap-1.5">
@@ -715,6 +841,8 @@ export const App: React.FC = () => {
         </nav>
       </header>
 
+      <MobileHeaderMenu activeTabLabel={activeTabLabelMap[activeTab]} />
+
       {/* Main Container */}
       <main className="flex-1 max-w-6xl w-full mx-auto px-3 sm:px-4 pt-3 pb-24 sm:pb-6">
         <ViewErrorBoundary onReset={() => setActiveTab('triage')}>
diff --git a/frontend/src/components/MobileHeaderMenu.tsx b/frontend/src/components/MobileHeaderMenu.tsx
new file mode 100644
index 0000000..c33bf98
--- /dev/null
+++ b/frontend/src/components/MobileHeaderMenu.tsx
@@ -0,0 +1,140 @@
+import React from 'react';
+import { Check, X } from 'lucide-react';
+import { useMobileActions } from '../context/MobileActionContext';
+import { triggerHaptic } from '../lib/api';
+
+interface MobileHeaderMenuProps {
+  activeTabLabel: string;
+}
+
+export const MobileHeaderMenu: React.FC<MobileHeaderMenuProps> = ({ activeTabLabel }) => {
+  const { groups, isMenuOpen, closeMenu } = useMobileActions();
+
+  if (!isMenuOpen) return null;
+
+  return (
+    <div className="sm:hidden fixed inset-0 z-50">
+      {/* Backdrop */}
+      <div
+        className="fixed inset-0 bg-black/60 backdrop-blur-xs animate-in fade-in duration-150"
+        onClick={() => {
+          triggerHaptic(8);
+          closeMenu();
+        }}
+      />
+
+      {/* Menu Sheet below Header */}
+      <div className="fixed top-14 left-2.5 right-2.5 max-h-[80vh] overflow-y-auto bg-panel border border-border rounded-2xl shadow-2xl p-3 space-y-3.5 z-50 animate-in fade-in slide-in-from-top-2 duration-150">
+        {/* Menu Header */}
+        <div className="flex items-center justify-between px-2 pb-2 border-b border-border">
+          <div className="flex items-center gap-2">
+            <span className="w-2 h-2 rounded-full bg-accent"></span>
+            <span className="text-xs font-bold uppercase tracking-wider text-muted">
+              {activeTabLabel} — Optionen & Aktionen
+            </span>
+          </div>
+          <button
+            type="button"
+            onClick={() => {
+              triggerHaptic(8);
+              closeMenu();
+            }}
+            className="w-9 h-9 rounded-xl flex items-center justify-center text-muted hover:text-main hover:bg-canvas active:scale-95 transition-all"
+            title="Menü schließen"
+          >
+            <X className="w-4 h-4" />
+          </button>
+        </div>
+
+        {groups.length === 0 ? (
+          <div className="py-6 text-center text-xs text-muted">
+            Keine spezifischen Optionen für diese Ansicht verfügbar.
+          </div>
+        ) : (
+          <div className="space-y-4">
+            {groups.map((group) => (
+              <div key={group.id} className="space-y-1.5">
+                {group.title && (
+                  <div className="px-2 text-[11px] font-bold uppercase tracking-wider text-faint">
+                    {group.title}
+                  </div>
+                )}
+                <div className="space-y-1">
+                  {group.items.map((item) => {
+                    const isAccent = item.variant === 'accent';
+                    const isDanger = item.variant === 'danger';
+                    const isActive = item.active;
+
+                    let btnClass =
+                      'bg-canvas/70 hover:bg-canvas text-main border border-border/60';
+                    if (isAccent) {
+                      btnClass =
+                        'bg-accent text-on-accent border border-accent font-semibold shadow-sm';
+                    } else if (isDanger) {
+                      btnClass =
+                        'bg-status-err/10 text-status-err border border-status-err/30 font-medium';
+                    } else if (isActive) {
+                      btnClass =
+                        'bg-accent/15 text-accent border border-accent/40 font-semibold';
+                    }
+
+                    return (
+                      <button
+                        key={item.id}
+                        type="button"
+                        onClick={() => {
+                          triggerHaptic(12);
+                          closeMenu();
+                          item.onClick();
+                        }}
+                        className={`w-full min-h-[46px] px-3.5 py-2.5 rounded-xl flex items-center justify-between gap-3 text-sm transition-all active:scale-[0.98] cursor-pointer ${btnClass}`}
+                      >
+                        <div className="flex items-center gap-3 min-w-0 flex-1 text-left">
+                          {item.icon && (
+                            <span
+                              className={`flex-shrink-0 flex items-center justify-center w-5 h-5 ${
+                                isAccent
+                                  ? 'text-on-accent'
+                                  : isDanger
+                                  ? 'text-status-err'
+                                  : isActive
+                                  ? 'text-accent'
+                                  : 'text-muted'
+                              }`}
+                            >
+                              {item.icon}
+                            </span>
+                          )}
+                          <span className="truncate">{item.label}</span>
+                        </div>
+
+                        <div className="flex items-center gap-2 flex-shrink-0">
+                          {item.badge !== undefined && item.badge !== '' && (
+                            <span
+                              className={`px-2 py-0.5 rounded-full text-xs font-mono font-semibold ${
+                                isAccent
+                                  ? 'bg-black/20 text-on-accent'
+                                  : isActive
+                                  ? 'bg-accent/20 text-accent'
+                                  : 'bg-panel text-muted border border-border'
+                              }`}
+                            >
+                              {item.badge}
+                            </span>
+                          )}
+                          {isActive && !isAccent && (
+                            <Check className="w-4 h-4 text-accent flex-shrink-0" />
+                          )}
+                        </div>
+                      </button>
+                    );
+                  })}
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
diff --git a/frontend/src/context/MobileActionContext.tsx b/frontend/src/context/MobileActionContext.tsx
new file mode 100644
index 0000000..ef661a4
--- /dev/null
+++ b/frontend/src/context/MobileActionContext.tsx
@@ -0,0 +1,62 @@
+import React, { createContext, useContext, useState, useCallback } from 'react';
+
+export interface MobileActionItem {
+  id: string;
+  label: string;
+  icon?: React.ReactNode;
+  badge?: string | number;
+  variant?: 'default' | 'accent' | 'danger';
+  active?: boolean;
+  onClick: () => void;
+}
+
+export interface MobileMenuGroup {
+  id: string;
+  title?: string;
+  items: MobileActionItem[];
+}
+
+interface MobileActionContextValue {
+  groups: MobileMenuGroup[];
+  setGroups: (groups: MobileMenuGroup[]) => void;
+  isMenuOpen: boolean;
+  setIsMenuOpen: React.Dispatch<React.SetStateAction<boolean>>;
+  closeMenu: () => void;
+}
+
+const MobileActionContext = createContext<MobileActionContextValue>({
+  groups: [],
+  setGroups: () => {},
+  isMenuOpen: false,
+  setIsMenuOpen: () => {},
+  closeMenu: () => {},
+});
+
+export const MobileActionProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const [groups, setGroupsState] = useState<MobileMenuGroup[]>([]);
+  const [isMenuOpen, setIsMenuOpen] = useState(false);
+
+  const setGroups = useCallback((newGroups: MobileMenuGroup[]) => {
+    setGroupsState(newGroups);
+  }, []);
+
+  const closeMenu = useCallback(() => {
+    setIsMenuOpen(false);
+  }, []);
+
+  return (
+    <MobileActionContext.Provider
+      value={{
+        groups,
+        setGroups,
+        isMenuOpen,
+        setIsMenuOpen,
+        closeMenu,
+      }}
+    >
+      {children}
+    </MobileActionContext.Provider>
+  );
+};
+
+export const useMobileActions = () => useContext(MobileActionContext);
diff --git a/frontend/src/features/lists/SharedListsView.tsx b/frontend/src/features/lists/SharedListsView.tsx
index d4615fe..4f3853c 100644
--- a/frontend/src/features/lists/SharedListsView.tsx
+++ b/frontend/src/features/lists/SharedListsView.tsx
@@ -12,6 +12,7 @@ import {
 import { ListItem, SharedList, ListShare, Team, User, WSMessage } from '../../lib/types';
 import { api, buildWebSocketURL, triggerHaptic } from '../../lib/api';
 import { UnifiedShareModal } from '../../components/UnifiedShareModal';
+import { useMobileActions } from '../../context/MobileActionContext';
 
 interface SharedListsViewProps {
   onRefreshGlobal: () => void;
@@ -76,6 +77,7 @@ export function deduplicateItems(items: ListItem[]): ListItem[] {
 }
 
 export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGlobal, currentUser }) => {
+  const { setGroups } = useMobileActions();
   const [lists, setLists] = useState<SharedList[]>([]);
   const [activeListId, setActiveListId] = useState<string>('');
 
@@ -710,10 +712,122 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
     return result;
   }, [openItems]);
 
+  // Register context-sensitive mobile menu groups behind the MindSift logo
+  useEffect(() => {
+    setGroups([
+      {
+        id: 'lists-actions',
+        title: 'Aktionen',
+        items: [
+          {
+            id: 'list-new-item',
+            label: 'Neuen Eintrag hinzufügen',
+            icon: <Plus className="w-4 h-4 text-accent" />,
+            variant: 'accent',
+            onClick: () => {
+              setTimeout(() => {
+                inputRef.current?.focus();
+                inputRef.current?.scrollIntoView({ behavior: 'smooth', block: 'center' });
+              }, 60);
+            },
+          },
+          {
+            id: 'list-new-list',
+            label: 'Neue Einkaufsliste erstellen',
+            icon: <Plus className="w-4 h-4" />,
+            onClick: () => setShowNewListModal(true),
+          },
+          ...(activeList
+            ? [
+                {
+                  id: 'list-share',
+                  label: `Liste "${activeList.title}" teilen`,
+                  icon: <Users className="w-4 h-4" />,
+                  onClick: () => openShareModal(),
+                },
+              ]
+            : []),
+          ...(completedItems.length > 0
+            ? [
+                {
+                  id: 'list-clear-completed',
+                  label: `Erledigte aufräumen (${completedItems.length})`,
+                  icon: <Sparkles className="w-4 h-4" />,
+                  onClick: () => handleClearCompleted(),
+                },
+              ]
+            : []),
+          ...(activeList && lists.length > 1
+            ? [
+                {
+                  id: 'list-delete',
+                  label: `Liste "${activeList.title}" löschen`,
+                  icon: <Trash2 className="w-4 h-4" />,
+                  variant: 'danger' as const,
+                  onClick: () => handleDeleteList(activeList.id),
+                },
+              ]
+            : []),
+        ],
+      },
+      {
+        id: 'lists-switcher',
+        title: 'Einkaufslisten wechseln',
+        items: lists.map((lst) => {
+          const openCount = deduplicateItems(lst.items || []).filter((i) => !i.isCompleted).length;
+          return {
+            id: `select-list-${lst.id}`,
+            label: lst.title,
+            icon: <span className="text-base">{lst.icon}</span>,
+            badge: openCount > 0 ? openCount : undefined,
+            active: activeList?.id === lst.id,
+            onClick: () => setActiveListId(lst.id),
+          };
+        }),
+      },
+    ]);
+  }, [lists, activeList, completedItems.length, setGroups]);
+
   return (
     <div className="w-full space-y-3">
-      {/* Top Header: List Tabs & Actions */}
-      <div className="flex flex-wrap items-center justify-between gap-2 border-b border-border pb-2">
+      {/* Mobile Compact Header Bar (List switching & actions live in MindSift Logo Menu) */}
+      <div className="flex sm:hidden items-center justify-between gap-2 px-3 py-2 rounded-btn bg-panel border border-border">
+        <div className="flex items-center gap-2 min-w-0">
+          <span className="text-sm font-semibold text-main truncate">
+            {activeList ? `${activeList.icon} ${activeList.title}` : '🛒 Einkaufsliste'}
+          </span>
+          {openItems.length > 0 && (
+            <span className="badge-neutral text-[11px] flex-shrink-0">
+              {openItems.length} offen
+            </span>
+          )}
+        </div>
+        <div className="flex items-center gap-1.5 flex-shrink-0">
+          {activeList && (
+            <button
+              type="button"
+              onClick={openShareModal}
+              className="btn-icon min-h-[36px] min-w-[36px] flex items-center justify-center"
+              title="Liste teilen"
+            >
+              <Users className="w-4 h-4 text-accent" />
+            </button>
+          )}
+          <div
+            className={`h-9 w-9 flex items-center justify-center rounded-btn border ${
+              wsConnected
+                ? 'bg-emerald-500/10 border-emerald-500/30 text-emerald-500'
+                : 'bg-canvas border-border text-muted'
+            }`}
+            title={wsConnected ? 'Live synchronisiert (Online)' : 'Offline'}
+          >
+            <Radio className={`w-3.5 h-3.5 ${wsConnected ? 'animate-pulse' : ''}`} />
+          </div>
+        </div>
+      </div>
+
+      {/* Top Header: List Tabs & Actions (Desktop) */}
+      <div className="hidden sm:flex flex-wrap items-center justify-between gap-2 border-b border-border pb-2">
         {/* List Tabs */}
         <div className="flex flex-wrap items-center gap-1">
           {lists.map((lst) => {
@@ -862,7 +976,7 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
           {/* Quick-Add Form */}
           <form
             onSubmit={handleAddItem}
-            className="flex flex-col sm:flex-row items-center gap-2 panel-surface p-1.5 relative"
+            className="flex flex-col sm:flex-row items-center gap-2 panel-surface p-2 sm:p-1.5 relative"
           >
             <div className="relative flex items-center gap-2 flex-1 w-full px-1.5">
               <Plus className="w-4 h-4 text-accent flex-shrink-0" />
@@ -888,7 +1002,7 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                   setTimeout(() => setShowSuggestions(false), 200);
                 }}
                 placeholder={`Eintrag zu "${activeList.title}" hinzufügen (z. B. Hafermilch #Kühlregal)…`}
-                className="flex-1 bg-transparent py-1 text-sm text-main placeholder-faint focus:outline-none"
+                className="flex-1 bg-transparent py-1.5 sm:py-1 text-sm text-main placeholder-faint focus:outline-none"
               />
 
               {/* Hashtag Autocomplete Suggestions Dropdown */}
@@ -907,7 +1021,7 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                           e.preventDefault();
                           applySuggestion(tag);
                         }}
-                        className={`w-full text-left px-3 py-1.5 text-xs flex items-center justify-between transition-colors ${
+                        className={`w-full text-left px-3 py-2 sm:py-1.5 text-xs flex items-center justify-between transition-colors ${
                           isSelected
                             ? 'bg-accent/20 text-accent font-medium'
                             : 'text-main hover:bg-panel-hover'
@@ -932,12 +1046,12 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                 value={newItemQty}
                 onChange={(e) => setNewItemQty(e.target.value)}
                 placeholder="Menge (z.B. 2x)"
-                className="w-28 h-7 px-2 input-field text-xs"
+                className="flex-1 sm:flex-none sm:w-28 h-9 sm:h-7 px-2.5 sm:px-2 input-field text-xs"
               />
               <button
                 type="submit"
                 disabled={isSubmittingItem || !newItemText.trim()}
-                className="btn-primary h-7 px-3 text-xs disabled:opacity-40 disabled:cursor-not-allowed flex items-center gap-1 flex-shrink-0"
+                className="btn-primary h-9 sm:h-7 px-3.5 sm:px-3 text-xs disabled:opacity-40 disabled:cursor-not-allowed flex items-center gap-1 flex-shrink-0"
               >
                 {isSubmittingItem ? 'Wird hinzugefügt…' : 'Hinzufügen'}
               </button>
@@ -1005,7 +1119,7 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                           onDragLeave={(e) => handleItemDragLeave(e, item.id)}
                           onDrop={(e) => handleDropOnItem(e, item, group.category)}
                           onClick={() => handleToggleItem(item)}
-                          className={`px-3 py-2.5 flex items-center justify-between gap-3 cursor-pointer cursor-grab active:cursor-grabbing select-none transition-colors hover:bg-panel-hover group relative ${
+                          className={`px-3.5 py-3.5 sm:px-3 sm:py-2.5 flex items-center justify-between gap-3 cursor-pointer cursor-grab active:cursor-grabbing select-none transition-colors hover:bg-panel-hover group relative ${
                             isDragging ? 'opacity-30 border border-dashed border-accent/40' : ''
                           }`}
                         >
@@ -1017,7 +1131,7 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                             <div className="absolute bottom-0 left-0 right-0 h-0.5 bg-accent z-20 pointer-events-none rounded-full shadow-[0_0_8px_rgba(var(--accent-rgb),0.6)]" />
                           )}
 
-                          <div className="flex items-center gap-2.5 min-w-0 flex-1">
+                          <div className="flex items-center gap-3 sm:gap-2.5 min-w-0 flex-1">
                             {/* Eckiges Abhaken */}
                             <button
                               type="button"
@@ -1027,14 +1141,14 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                                 e.stopPropagation();
                                 handleToggleItem(item);
                               }}
-                              className={`w-4 h-4 checkbox-square flex items-center justify-center flex-shrink-0 transition-colors border ${
+                              className={`w-5 h-5 sm:w-4 sm:h-4 checkbox-square flex items-center justify-center flex-shrink-0 transition-colors border ${
                                 item.isCompleted
                                   ? 'bg-status-ok border-status-ok text-on-accent'
                                   : 'border-strong hover:border-accent text-transparent'
                               }`}
                               title={item.isCompleted ? 'Als offen markieren' : 'Als erledigt abhaken'}
                             >
-                              <Check className="w-3 h-3 stroke-[3]" />
+                              <Check className="w-3.5 h-3.5 sm:w-3 sm:h-3 stroke-[3]" />
                             </button>
 
                             <span className="text-sm font-medium text-main truncate">
@@ -1062,10 +1176,10 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                               e.stopPropagation();
                               handleDeleteItem(item.id);
                             }}
-                            className="btn-icon btn-icon-danger opacity-0 group-hover:opacity-100 transition-opacity"
+                            className="btn-icon btn-icon-danger p-2 sm:p-1 opacity-100 sm:opacity-0 sm:group-hover:opacity-100 transition-opacity"
                             title="Eintrag löschen"
                           >
-                            <Trash2 className="w-3.5 h-3.5" />
+                            <Trash2 className="w-4 h-4 sm:w-3.5 sm:h-3.5" />
                           </button>
                         </div>
                       );
@@ -1085,7 +1199,7 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                 </span>
                 <button
                   onClick={handleClearCompleted}
-                  className="btn-action text-xs"
+                  className="btn-action min-h-[36px] sm:min-h-0 text-xs"
                 >
                   Erledigte aufräumen
                 </button>
@@ -1099,7 +1213,7 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                     <div
                       key={item.id}
                       onClick={() => handleToggleItem(item)}
-                      className="px-3 py-2 flex items-center justify-between gap-3 cursor-pointer hover:bg-panel-hover transition-colors group"
+                      className="px-3.5 py-3 sm:px-3 sm:py-2 flex items-center justify-between gap-3 cursor-pointer hover:bg-panel-hover transition-colors group"
                     >
                       <div className="flex items-center gap-3 min-w-0 flex-1">
                         {/* Eckiges Abhaken */}
@@ -1109,10 +1223,10 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                             e.stopPropagation();
                             handleToggleItem(item);
                           }}
-                          className="w-4 h-4 checkbox-square flex items-center justify-center flex-shrink-0 transition-colors border bg-status-ok border-status-ok text-on-accent"
+                          className="w-5 h-5 sm:w-4 sm:h-4 checkbox-square flex items-center justify-center flex-shrink-0 transition-colors border bg-status-ok border-status-ok text-on-accent"
                           title="Als offen markieren"
                         >
-                          <Check className="w-3 h-3 stroke-[3]" />
+                          <Check className="w-3.5 h-3.5 sm:w-3 sm:h-3 stroke-[3]" />
                         </button>
 
                         <span className="text-sm text-faint line-through truncate">
@@ -1134,10 +1248,10 @@ export const SharedListsView: React.FC<SharedListsViewProps> = ({ onRefreshGloba
                             e.stopPropagation();
                             handleDeleteItem(item.id);
                           }}
-                          className="btn-icon btn-icon-danger opacity-0 group-hover:opacity-100 transition-opacity"
+                          className="btn-icon btn-icon-danger p-2 sm:p-1 opacity-100 sm:opacity-0 sm:group-hover:opacity-100 transition-opacity"
                           title="Löschen"
                         >
-                          <Trash2 className="w-3.5 h-3.5" />
+                          <Trash2 className="w-4 h-4 sm:w-3.5 sm:h-3.5" />
                         </button>
                       </div>
                     </div>
diff --git a/frontend/src/features/triage/TaskDetailModal.tsx b/frontend/src/features/triage/TaskDetailModal.tsx
index 4f138c6..58709b8 100644
--- a/frontend/src/features/triage/TaskDetailModal.tsx
+++ b/frontend/src/features/triage/TaskDetailModal.tsx
@@ -194,7 +194,7 @@ export const TaskDetailModal: React.FC<TaskDetailModalProps> = ({
             </span>
           </div>
 
-          <div className="flex items-center gap-1">
+          <div className="flex items-center gap-1.5">
             <button
               type="button"
               onClick={() => {
@@ -202,9 +202,9 @@ export const TaskDetailModal: React.FC<TaskDetailModalProps> = ({
                 onConvertToDoc(task);
               }}
               title="Als Dokument / Notiz vertiefen"
-              className="btn-action h-7 px-2 text-xs flex items-center gap-1"
+              className="btn-action min-h-[38px] sm:min-h-0 h-9 sm:h-7 px-2.5 sm:px-2 text-xs flex items-center gap-1.5"
             >
-              <FileText className="w-3.5 h-3.5 text-accent" />
+              <FileText className="w-4 h-4 sm:w-3.5 sm:h-3.5 text-accent" />
               <span className="hidden sm:inline">Als Notiz vertiefen</span>
             </button>
             <button
@@ -216,17 +216,18 @@ export const TaskDetailModal: React.FC<TaskDetailModalProps> = ({
                 }
               }}
               title="Aufgabe löschen"
-              className="text-muted hover:text-status-err p-1.5 transition-colors"
+              className="btn-action min-h-[38px] sm:min-h-0 h-9 sm:h-7 px-2.5 sm:px-2 text-xs text-status-err border-status-err/30 hover:bg-status-err/10 flex items-center gap-1"
             >
-              <Trash2 className="w-4 h-4" />
+              <Trash2 className="w-4 h-4 sm:w-3.5 sm:h-3.5" />
+              <span className="sm:hidden font-medium">Löschen</span>
             </button>
             <button
               type="button"
               onClick={onClose}
-              className="text-muted hover:text-main p-1.5 transition-colors"
+              className="text-muted hover:text-main p-2 sm:p-1.5 min-h-[38px] min-w-[38px] sm:min-h-0 sm:min-w-0 flex items-center justify-center transition-colors"
               title="Schließen"
             >
-              <X className="w-4 h-4" />
+              <X className="w-5 h-5 sm:w-4 sm:h-4" />
             </button>
           </div>
         </div>
diff --git a/frontend/src/features/triage/TasksView.tsx b/frontend/src/features/triage/TasksView.tsx
index a723c16..df53be1 100644
--- a/frontend/src/features/triage/TasksView.tsx
+++ b/frontend/src/features/triage/TasksView.tsx
@@ -30,6 +30,7 @@ import { UnifiedShareModal } from '../../components/UnifiedShareModal';
 import { TaskDetailModal } from './TaskDetailModal';
 import { ManageColumnsModal, DEFAULT_KANBAN_COLUMNS } from './ManageColumnsModal';
 import { UserAutocomplete } from '../UserAutocomplete';
+import { useMobileActions } from '../../context/MobileActionContext';
 
 const getInitials = (name?: string): string => {
   if (!name) return '?';
@@ -71,6 +72,8 @@ export const TasksView: React.FC<TasksViewProps> = ({
   // Quick Task Add state
   const [quickTitle, setQuickTitle] = useState('');
   const [quickDueDate, setQuickDueDate] = useState('');
+  const quickInputRef = useRef<HTMLInputElement | null>(null);
+  const { setGroups } = useMobileActions();
 
   // New TaskList modal state
   const [showNewListModal, setShowNewListModal] = useState(false);
@@ -811,6 +814,141 @@ export const TasksView: React.FC<TasksViewProps> = ({
     }
   };
 
+  useEffect(() => {
+    const actionItems: any[] = [
+      {
+        id: 'new-task',
+        label: 'Neue Aufgabe erstellen',
+        icon: <Plus className="w-4 h-4" />,
+        variant: 'accent',
+        onClick: () => {
+          window.scrollTo({ top: 0, behavior: 'smooth' });
+          setTimeout(() => quickInputRef.current?.focus(), 100);
+        },
+      },
+      {
+        id: 'new-task-list',
+        label: 'Neue Aufgabenliste anlegen',
+        icon: <Folder className="w-4 h-4" />,
+        onClick: () => setShowNewListModal(true),
+      },
+    ];
+
+    if (currentSelectedList) {
+      actionItems.push({
+        id: 'share-task-list',
+        label: `Liste „${currentSelectedList.title}“ teilen`,
+        icon: <Users className="w-4 h-4" />,
+        onClick: () => handleOpenShareModal(currentSelectedList),
+      });
+      actionItems.push({
+        id: 'delete-task-list',
+        label: `Liste „${currentSelectedList.title}“ löschen`,
+        icon: <Trash2 className="w-4 h-4" />,
+        variant: 'danger',
+        onClick: () => handleDeleteTaskList(currentSelectedList.id),
+      });
+    }
+
+    const viewItems: any[] = [
+      {
+        id: 'filter-open',
+        label: 'Offene Aufgaben (Liste)',
+        icon: <LayoutList className="w-4 h-4" />,
+        badge: openTasks.length,
+        active: viewMode === 'list' && filter === 'open',
+        onClick: () => {
+          setViewMode('list');
+          setFilter('open');
+        },
+      },
+      {
+        id: 'filter-done',
+        label: 'Erledigte Aufgaben',
+        icon: <Check className="w-4 h-4" />,
+        badge: doneTasks.length,
+        active: viewMode === 'list' && filter === 'done',
+        onClick: () => {
+          setViewMode('list');
+          setFilter('done');
+        },
+      },
+      {
+        id: 'filter-discarded',
+        label: 'Papierkorb',
+        icon: <Trash2 className="w-4 h-4" />,
+        badge: safeDiscarded.length,
+        active: viewMode === 'list' && filter === 'discarded',
+        onClick: () => {
+          setViewMode('list');
+          setFilter('discarded');
+        },
+      },
+      {
+        id: 'view-kanban',
+        label: 'Kanban-Board Ansicht',
+        icon: <Columns className="w-4 h-4" />,
+        badge: kanbanTasks.length,
+        active: viewMode === 'kanban',
+        onClick: () => setViewMode('kanban'),
+      },
+    ];
+
+    if (viewMode === 'kanban') {
+      viewItems.push({
+        id: 'manage-columns',
+        label: 'Kanban-Spalten verwalten',
+        icon: <Settings className="w-4 h-4" />,
+        onClick: () => setShowManageColumnsModal(true),
+      });
+    }
+
+    const listItems: any[] = [
+      {
+        id: 'list-all',
+        label: 'Alle Aufgaben',
+        icon: <Layers className="w-4 h-4" />,
+        active: selectedListId === 'all',
+        onClick: () => setSelectedListId('all'),
+      },
+      ...safeTaskLists.map((tl) => ({
+        id: `list-${tl.id}`,
+        label: `${tl.icon || '📋'} ${tl.title}`,
+        badge: tl.tasksCount || undefined,
+        active: selectedListId === tl.id,
+        onClick: () => setSelectedListId(tl.id),
+      })),
+    ];
+
+    setGroups([
+      {
+        id: 'tasks-actions',
+        title: 'Aktionen',
+        items: actionItems,
+      },
+      {
+        id: 'tasks-views',
+        title: 'Ansicht & Status',
+        items: viewItems,
+      },
+      {
+        id: 'tasks-lists',
+        title: 'Aufgabenlisten',
+        items: listItems,
+      },
+    ]);
+  }, [
+    viewMode,
+    filter,
+    selectedListId,
+    openTasks.length,
+    doneTasks.length,
+    safeDiscarded.length,
+    kanbanTasks.length,
+    safeTaskLists,
+    currentSelectedList,
+  ]);
+
   const renderTaskProgressBar = (task: Thought) => {
     if (!task.subtasks || task.subtasks.length === 0) return null;
     const total = task.subtasks.length;
@@ -868,7 +1006,7 @@ export const TasksView: React.FC<TasksViewProps> = ({
           setDetailTaskId(task.id);
           setShowDetailModal(true);
         }}
-        className={`px-3 py-2.5 flex items-center justify-between gap-3 transition-colors hover:bg-panel-hover group border-b border-border last:border-b-0 relative cursor-pointer cursor-grab active:cursor-grabbing select-none ${
+        className={`px-3.5 py-3.5 sm:px-3 sm:py-2.5 flex items-center justify-between gap-3 transition-colors hover:bg-panel-hover group border-b border-border last:border-b-0 relative cursor-pointer cursor-grab active:cursor-grabbing select-none ${
           isCompleted ? 'opacity-65' : ''
         } ${isDragging ? 'opacity-30 border border-dashed border-accent/40' : ''}`}
       >
@@ -880,8 +1018,8 @@ export const TasksView: React.FC<TasksViewProps> = ({
           <div className="absolute bottom-0 left-0 right-0 h-0.5 bg-accent z-20 pointer-events-none rounded-full shadow-[0_0_8px_rgba(var(--accent-rgb),0.6)]" />
         )}
 
-        <div className="flex items-center gap-2.5 min-w-0 flex-1">
-          {/* Checkbox */}
+        <div className="flex items-center gap-3 sm:gap-2.5 min-w-0 flex-1">
+          {/* Checkbox (larger touch target on mobile) */}
           <button
             type="button"
             draggable={false}
@@ -890,14 +1028,14 @@ export const TasksView: React.FC<TasksViewProps> = ({
               e.stopPropagation();
               handleToggleDone(task);
             }}
-            className={`w-4 h-4 checkbox-square flex items-center justify-center flex-shrink-0 transition-colors border ${
+            className={`w-5 h-5 sm:w-4 sm:h-4 checkbox-square flex items-center justify-center flex-shrink-0 transition-colors border ${
               isCompleted
                 ? 'bg-status-ok border-status-ok text-on-accent'
                 : 'border-strong hover:border-accent text-transparent'
             }`}
             title={isCompleted ? 'Als offen markieren' : 'Als erledigt abhaken'}
           >
-            <Check className="w-3 h-3 stroke-[3]" />
+            <Check className="w-3.5 h-3.5 sm:w-3 sm:h-3 stroke-[3]" />
           </button>
 
           {/* Clickable Title & Metadata */}
@@ -1006,8 +1144,8 @@ export const TasksView: React.FC<TasksViewProps> = ({
           </div>
         </div>
 
-        {/* Action Controls */}
-        <div className="flex items-center gap-1 flex-shrink-0" onMouseDown={(e) => e.stopPropagation()} onClick={(e) => e.stopPropagation()}>
+        {/* Action Controls (Desktop only - on mobile, tapping the task opens Detail Modal) */}
+        <div className="hidden sm:flex items-center gap-1 flex-shrink-0" onMouseDown={(e) => e.stopPropagation()} onClick={(e) => e.stopPropagation()}>
           <button
             type="button"
             draggable={false}
@@ -1045,8 +1183,36 @@ export const TasksView: React.FC<TasksViewProps> = ({
 
   return (
     <div className="w-full space-y-3">
-      {/* Top Header: Task Lists Tabs & View Mode Switcher */}
-      <div className="flex flex-wrap items-center justify-between gap-2 border-b border-border pb-2">
+      {/* Mobile Compact Context Bar (replaces cluttered button rows; options live in MindSift Logo Menu) */}
+      <div className="flex sm:hidden items-center justify-between gap-2 px-3 py-2 rounded-btn bg-panel border border-border">
+        <div className="flex items-center gap-2 min-w-0">
+          <span className="text-sm font-semibold text-main truncate">
+            {currentSelectedList ? `${currentSelectedList.icon} ${currentSelectedList.title}` : '📋 Alle Aufgaben'}
+          </span>
+          <span className="badge-neutral text-[11px] flex-shrink-0">
+            {viewMode === 'kanban'
+              ? 'Kanban'
+              : filter === 'open'
+              ? `Offen (${openTasks.length})`
+              : filter === 'done'
+              ? `Erledigt (${doneTasks.length})`
+              : `Papierkorb (${safeDiscarded.length})`}
+          </span>
+        </div>
+        {currentSelectedList && (
+          <button
+            type="button"
+            onClick={() => handleOpenShareModal(currentSelectedList)}
+            className="btn-icon min-h-[36px] min-w-[36px] flex items-center justify-center flex-shrink-0"
+            title="Aufgabenliste teilen"
+          >
+            <Users className="w-4 h-4 text-accent" />
+          </button>
+        )}
+      </div>
+
+      {/* Top Header: Task Lists Tabs & View Mode Switcher (Desktop) */}
+      <div className="hidden sm:flex flex-wrap items-center justify-between gap-2 border-b border-border pb-2">
         {/* Task Lists selector tabs */}
         <div className="flex flex-wrap items-center gap-1">
           <button
@@ -1200,32 +1366,33 @@ export const TasksView: React.FC<TasksViewProps> = ({
       {/* Quick Add Task Input */}
       <form
         onSubmit={handleQuickAddTask}
-        className="flex items-center gap-1.5 panel-surface p-1.5"
+        className="flex items-center gap-1.5 panel-surface p-2 sm:p-1.5"
       >
         <Plus className="w-4 h-4 text-accent ml-1 flex-shrink-0" />
         <input
+          ref={quickInputRef}
           type="text"
           value={quickTitle}
           onChange={(e) => setQuickTitle(e.target.value)}
           placeholder={
             currentSelectedList
-              ? `Aufgabe zu "${currentSelectedList.title}" hinzufügen… (Enter)`
-              : 'Neue Aufgabe anlegen… (Enter)'
+              ? `Aufgabe zu "${currentSelectedList.title}" hinzufügen…`
+              : 'Neue Aufgabe anlegen…'
           }
-          className="flex-1 bg-transparent px-2 py-1 text-sm text-main placeholder-faint focus:outline-none"
+          className="flex-1 bg-transparent px-2 py-1.5 sm:py-1 text-sm text-main placeholder-faint focus:outline-none min-w-0"
         />
-        <div className="flex items-center gap-1">
+        <div className="flex items-center gap-1 flex-shrink-0">
           <input
             type="date"
             value={quickDueDate}
             onChange={(e) => setQuickDueDate(e.target.value)}
-            className="h-7 px-2 input-field text-xs"
+            className="hidden sm:block h-7 px-2 input-field text-xs"
             title="Fälligkeitsdatum"
           />
           <button
             type="submit"
             disabled={!quickTitle.trim()}
-            className="btn-primary h-7 px-3 text-xs disabled:opacity-40"
+            className="btn-primary h-9 sm:h-7 px-3.5 sm:px-3 text-xs disabled:opacity-40"
           >
             Hinzufügen
           </button>
@@ -1559,7 +1726,7 @@ export const TasksView: React.FC<TasksViewProps> = ({
                           >
                             {task.content}
                           </p>
-                          <div className="flex items-center gap-1 flex-shrink-0" onClick={(e) => e.stopPropagation()}>
+                          <div className="hidden sm:flex items-center gap-1 flex-shrink-0" onClick={(e) => e.stopPropagation()}>
                             <button
                               onClick={() => handleConvertToDoc(task)}
                               title="Als Notiz vertiefen"
@@ -1689,9 +1856,9 @@ export const TasksView: React.FC<TasksViewProps> = ({
       ) : (
         /* STANDARD LIST VIEW (CLEAN & UNCLUTTERED) */
         <div className="space-y-2">
-          {/* Subfilter tabs for List View */}
+          {/* Subfilter tabs for List View (Desktop; on mobile controlled via MindSift Logo Menu) */}
           <div className="flex items-center justify-between gap-2">
-            <div className="flex items-center border border-border rounded-btn bg-canvas overflow-hidden">
+            <div className="hidden sm:flex items-center border border-border rounded-btn bg-canvas overflow-hidden">
               <button
                 onClick={() => setFilter('open')}
                 className={`h-8 px-3.5 text-xs font-medium border-r border-border transition-colors ${
@@ -1721,7 +1888,7 @@ export const TasksView: React.FC<TasksViewProps> = ({
             </div>
 
             {filter === 'discarded' && safeDiscarded.length > 0 && (
-              <button onClick={handlePurgeAllDiscarded} className="btn-action">
+              <button onClick={handlePurgeAllDiscarded} className="btn-action min-h-[38px] sm:min-h-0">
                 <Trash2 className="w-3.5 h-3.5" />
                 Papierkorb leeren
               </button>
diff --git a/frontend/src/features/workspace/WorkspaceView.tsx b/frontend/src/features/workspace/WorkspaceView.tsx
index b422bb0..171ab02 100644
--- a/frontend/src/features/workspace/WorkspaceView.tsx
+++ b/frontend/src/features/workspace/WorkspaceView.tsx
@@ -53,6 +53,7 @@ import { api, getToken, triggerHaptic } from '../../lib/api';
 import { CodeBlockItem } from './CodeBlockItem';
 import { UserAutocomplete } from '../UserAutocomplete';
 import { UnifiedShareModal } from '../../components/UnifiedShareModal';
+import { useMobileActions } from '../../context/MobileActionContext';
 
 interface WorkspaceViewProps {
   currentUser?: User | null;
@@ -99,6 +100,9 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
   initialDocId,
   onStatsChange,
 }) => {
+  const { setGroups } = useMobileActions();
+  const [showMobileFileDrawer, setShowMobileFileDrawer] = useState(false);
+
   // Top Workspace Tab Mode: 'editor' vs 'todos' vs 'tags'
   const [workspaceMode, setWorkspaceMode] = useState<'editor' | 'todos' | 'tags'>('editor');
   const [selectedTag, setSelectedTag] = useState<string | null>(null);
@@ -2714,6 +2718,132 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
     return workspaceTags.filter((t) => t.tag.toLowerCase().includes(q));
   }, [workspaceTags, tagSearchQuery]);
 
+  // Register context-sensitive mobile menu groups behind the MindSift logo
+  useEffect(() => {
+    const openTodosCount = allWorkspaceTodos.filter((t) => !t.block.checked).length;
+    setGroups([
+      {
+        id: 'ws-view-files',
+        title: 'Workspace-Ansicht & Dateien',
+        items: [
+          {
+            id: 'ws-open-tree',
+            label: 'Dateibaum & Ordner öffnen',
+            icon: <FolderTree className="w-4 h-4 text-accent" />,
+            badge: docs.length,
+            variant: 'accent',
+            active: showMobileFileDrawer,
+            onClick: () => {
+              setWorkspaceMode('editor');
+              setShowMobileFileDrawer(true);
+            },
+          },
+          {
+            id: 'ws-mode-editor',
+            label: 'Notizen & Editor',
+            icon: <Layers className="w-4 h-4" />,
+            active: workspaceMode === 'editor' && !showMobileFileDrawer,
+            onClick: () => {
+              setWorkspaceMode('editor');
+              setShowMobileFileDrawer(false);
+            },
+          },
+          {
+            id: 'ws-mode-tags',
+            label: 'Themen & Hashtags',
+            icon: <Hash className="w-4 h-4" />,
+            badge: workspaceTags.length,
+            active: workspaceMode === 'tags',
+            onClick: () => {
+              setWorkspaceMode('tags');
+              setShowMobileFileDrawer(false);
+            },
+          },
+          {
+            id: 'ws-mode-todos',
+            label: 'Globale To-Dos',
+            icon: <CheckSquare className="w-4 h-4" />,
+            badge: openTodosCount,
+            active: workspaceMode === 'todos',
+            onClick: () => {
+              setWorkspaceMode('todos');
+              setShowMobileFileDrawer(false);
+            },
+          },
+        ],
+      },
+      {
+        id: 'ws-doc-actions',
+        title: 'Erstellen & Dokument-Aktionen',
+        items: [
+          {
+            id: 'ws-new-doc',
+            label: 'Neue Datei erstellen',
+            icon: <FilePlus className="w-4 h-4 text-accent" />,
+            onClick: () => {
+              setShowMobileFileDrawer(false);
+              handleCreateDoc(null);
+            },
+          },
+          {
+            id: 'ws-new-folder',
+            label: 'Neuer Ordner',
+            icon: <FolderPlus className="w-4 h-4" />,
+            onClick: () => {
+              setWorkspaceMode('editor');
+              setShowMobileFileDrawer(true);
+              handleStartCreateFolder(null);
+            },
+          },
+          ...(selectedDoc
+            ? [
+                {
+                  id: 'ws-share-doc',
+                  label: `Notiz "${selectedDoc.title || 'Unbenannt'}" teilen`,
+                  icon: <Users className="w-4 h-4" />,
+                  onClick: () => openShareModal(),
+                },
+                {
+                  id: 'ws-pin-doc',
+                  label: selectedDoc.isPinned ? 'Von Favoriten lösen' : 'Oben in Favoriten anpinnen',
+                  icon: <Pin className="w-4 h-4" />,
+                  active: Boolean(selectedDoc.isPinned),
+                  onClick: () => persistDocument({ ...selectedDoc, isPinned: !selectedDoc.isPinned }, true),
+                },
+                {
+                  id: 'ws-export-md',
+                  label: 'Als Markdown exportieren (.md)',
+                  icon: <Download className="w-4 h-4" />,
+                  onClick: () => handleExportMarkdown(),
+                },
+                {
+                  id: 'ws-delete-doc',
+                  label: selectedDoc.isOwner !== false ? 'Notiz löschen' : 'Geteilte Notiz verlassen',
+                  icon: <Trash2 className="w-4 h-4" />,
+                  variant: 'danger' as const,
+                  onClick: () => {
+                    if (selectedDoc.isOwner !== false) {
+                      handleDeleteDoc(selectedDoc.id);
+                    } else {
+                      handleLeaveShare();
+                    }
+                  },
+                },
+              ]
+            : []),
+        ],
+      },
+    ]);
+  }, [
+    workspaceMode,
+    showMobileFileDrawer,
+    docs.length,
+    workspaceTags.length,
+    allWorkspaceTodos,
+    selectedDoc,
+    setGroups,
+  ]);
+
   const renderDocItem = (doc: Document, depth: number) => {
     const isSelected = selectedDoc?.id === doc.id && workspaceMode === 'editor';
     const isDragging = draggingDocId === doc.id;
@@ -2732,9 +2862,10 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
           setSelectedDoc(doc);
           setZoomedBlockId(null);
           setWorkspaceMode('editor');
+          setShowMobileFileDrawer(false);
         }}
         style={{ paddingLeft: `${depth * 14 + 16}px` }}
-        className={`group flex items-center justify-between py-1.5 pr-2 border-l-2 transition-all cursor-pointer text-xs ${
+        className={`group flex items-center justify-between py-2.5 sm:py-1.5 pr-2 border-l-2 transition-all cursor-pointer text-sm sm:text-xs ${
           isDragging ? 'opacity-40 scale-[0.98]' : ''
         } ${
           isSelected
@@ -2744,15 +2875,15 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
         title={`${doc.title || 'Notiz'} (Ziehen zum Verschieben in Ordner)`}
       >
         <div className="flex items-center gap-2 min-w-0 flex-1">
-          <span className="text-sm flex-shrink-0">{doc.icon || '📄'}</span>
+          <span className="text-base sm:text-sm flex-shrink-0">{doc.icon || '📄'}</span>
           <span className="truncate">{doc.title || 'Unbenannt'}</span>
-          {doc.isPinned && <Pin className="w-2.5 h-2.5 text-accent flex-shrink-0" />}
+          {doc.isPinned && <Pin className="w-3 h-3 sm:w-2.5 sm:h-2.5 text-accent flex-shrink-0" />}
           {doc.isOwner === false && (
             <span
               title={`Geteilt von ${doc.ownerName || 'anderem Nutzer'} (${doc.permission === 'read' ? 'Nur Lesen' : 'Schreibrecht'})`}
               className="text-accent flex-shrink-0"
             >
-              <Users className="w-3 h-3" />
+              <Users className="w-3.5 h-3.5 sm:w-3 sm:h-3" />
             </span>
           )}
         </div>
@@ -2816,7 +2947,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
           onDragEnd={() => setDraggingFolderPath(null)}
           onClick={() => toggleFolder(node.path)}
           style={{ paddingLeft: `${node.depth * 14 + 8}px` }}
-          className={`group flex items-center justify-between py-1.5 pr-2 cursor-pointer transition-colors text-xs ${
+          className={`group flex items-center justify-between py-2.5 sm:py-1.5 pr-2 cursor-pointer transition-colors text-sm sm:text-xs ${
             isDraggingThisFolder ? 'opacity-40 scale-[0.98]' : ''
           } ${
             isDragOver
@@ -2828,31 +2959,32 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
           <div className="flex items-center gap-1.5 min-w-0">
             <span className="text-faint hover:text-muted">
               {isExpanded ? (
-                <ChevronDown className="w-3 h-3 flex-shrink-0" />
+                <ChevronDown className="w-3.5 h-3.5 sm:w-3 sm:h-3 flex-shrink-0" />
               ) : (
-                <ChevronRight className="w-3 h-3 flex-shrink-0" />
+                <ChevronRight className="w-3.5 h-3.5 sm:w-3 sm:h-3 flex-shrink-0" />
               )}
             </span>
             {isExpanded ? (
-              <FolderOpen className="w-3.5 h-3.5 text-accent flex-shrink-0" />
+              <FolderOpen className="w-4 h-4 sm:w-3.5 sm:h-3.5 text-accent flex-shrink-0" />
             ) : (
-              <Folder className="w-3.5 h-3.5 text-muted flex-shrink-0" />
+              <Folder className="w-4 h-4 sm:w-3.5 sm:h-3.5 text-muted flex-shrink-0" />
             )}
-            <span className="font-medium text-xs text-main truncate">{node.name}</span>
+            <span className="font-medium text-sm sm:text-xs text-main truncate">{node.name}</span>
             <span className="text-[10px] text-faint font-mono">({totalItems})</span>
           </div>
 
-          <div className="opacity-0 group-hover:opacity-100 flex items-center gap-1 transition-opacity">
+          <div className="opacity-100 sm:opacity-0 sm:group-hover:opacity-100 flex items-center gap-1 transition-opacity">
             <button
               type="button"
               onClick={(e) => {
                 e.stopPropagation();
+                setShowMobileFileDrawer(false);
                 handleCreateDoc(node.path);
               }}
-              className="p-1 hover:bg-panel-elevated text-muted hover:text-main rounded-btn"
+              className="p-1.5 sm:p-1 hover:bg-panel-elevated text-muted hover:text-main rounded-btn"
               title="Neue Datei in diesem Ordner"
             >
-              <FilePlus className="w-3 h-3" />
+              <FilePlus className="w-3.5 h-3.5 sm:w-3 sm:h-3" />
             </button>
             <button
               type="button"
@@ -2860,10 +2992,10 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                 e.stopPropagation();
                 handleStartCreateFolder(node.path);
               }}
-              className="p-1 hover:bg-panel-elevated text-muted hover:text-main rounded-btn"
+              className="p-1.5 sm:p-1 hover:bg-panel-elevated text-muted hover:text-main rounded-btn"
               title="Neuer Unterordner"
             >
-              <FolderPlus className="w-3 h-3" />
+              <FolderPlus className="w-3.5 h-3.5 sm:w-3 sm:h-3" />
             </button>
             <button
               type="button"
@@ -2871,10 +3003,10 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                 e.stopPropagation();
                 handleDeleteFolder(node.path, node.name);
               }}
-              className="p-1 hover:bg-red-500/10 text-muted hover:text-red-400 rounded-btn transition-colors"
+              className="p-1.5 sm:p-1 hover:bg-red-500/10 text-muted hover:text-red-400 rounded-btn transition-colors"
               title="Ordner löschen"
             >
-              <Trash2 className="w-3 h-3" />
+              <Trash2 className="w-3.5 h-3.5 sm:w-3 sm:h-3" />
             </button>
           </div>
         </div>
@@ -2882,9 +3014,9 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
         {isCreatingSubfolder && (
           <div
             style={{ paddingLeft: `${(node.depth + 1) * 14 + 8}px` }}
-            className="py-1 pr-2 flex items-center gap-1 bg-canvas"
+            className="py-1.5 sm:py-1 pr-2 flex items-center gap-1 bg-canvas"
           >
-            <Folder className="w-3 h-3 text-muted flex-shrink-0" />
+            <Folder className="w-3.5 h-3.5 sm:w-3 sm:h-3 text-muted flex-shrink-0" />
             <input
               type="text"
               autoFocus
@@ -2895,23 +3027,23 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                 if (e.key === 'Escape') setIsCreatingFolder(false);
               }}
               placeholder="Unterordner…"
-              className="flex-1 h-6 px-1.5 input-field text-xs"
+              className="flex-1 h-8 sm:h-6 px-2 sm:px-1.5 input-field text-xs"
             />
             <button
               type="button"
               onClick={handleConfirmCreateFolder}
-              className="p-1 text-accent hover:text-main rounded-btn"
+              className="p-1.5 sm:p-1 text-accent hover:text-main rounded-btn"
               title="Bestätigen"
             >
-              <Check className="w-3.5 h-3.5" />
+              <Check className="w-4 h-4 sm:w-3.5 sm:h-3.5" />
             </button>
             <button
               type="button"
               onClick={() => setIsCreatingFolder(false)}
-              className="p-1 text-muted hover:text-main rounded-btn"
+              className="p-1.5 sm:p-1 text-muted hover:text-main rounded-btn"
               title="Abbrechen"
             >
-              <X className="w-3.5 h-3.5" />
+              <X className="w-4 h-4 sm:w-3.5 sm:h-3.5" />
             </button>
           </div>
         )}
@@ -2938,8 +3070,52 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
 
   return (
     <div className="w-full space-y-2">
-      {/* Top Navigation Mode Switcher: Notizen & Outliner vs. Globales To-Do Dashboard */}
-      <div className="flex flex-wrap items-center justify-between gap-2 border-b border-border pb-2">
+      {/* Mobile Compact Workspace Bar (Options & mode switching live in MindSift Logo Menu) */}
+      <div className="flex sm:hidden items-center justify-between gap-2 px-3 py-2 rounded-btn bg-panel border border-border">
+        <button
+          type="button"
+          onClick={() => {
+            setWorkspaceMode('editor');
+            setShowMobileFileDrawer(true);
+          }}
+          className="flex items-center gap-2 min-w-0 text-left py-0.5"
+          title="Dateibaum & Ordner öffnen"
+        >
+          <FolderTree className="w-4 h-4 text-accent flex-shrink-0" />
+          <span className="text-sm font-semibold text-main truncate">
+            {workspaceMode === 'tags'
+              ? 'Themen & Hashtags'
+              : workspaceMode === 'todos'
+              ? 'Globale To-Dos'
+              : selectedDoc
+              ? `${selectedDoc.icon || '📄'} ${selectedDoc.title || 'Unbenannt'}`
+              : 'Dateibaum öffnen'}
+          </span>
+        </button>
+
+        <div className="flex items-center gap-1.5 flex-shrink-0">
+          {workspaceMode === 'editor' && selectedDoc && (
+            <span className="badge-accent text-[10px]">
+              <Check className="w-2.5 h-2.5" />
+              {saveState === 'saving' ? 'Speichert…' : 'Gespeichert'}
+            </span>
+          )}
+          <button
+            type="button"
+            onClick={() => {
+              setWorkspaceMode('editor');
+              setShowMobileFileDrawer(true);
+            }}
+            className="btn-action min-h-[36px] px-2.5 text-xs flex items-center gap-1"
+          >
+            <Folder className="w-3.5 h-3.5 text-accent" />
+            <span>Dateien</span>
+          </button>
+        </div>
+      </div>
+
+      {/* Top Navigation Mode Switcher: Notizen & Outliner vs. Globales To-Do Dashboard (Desktop) */}
+      <div className="hidden sm:flex flex-wrap items-center justify-between gap-2 border-b border-border pb-2">
         <div className="flex items-center gap-1">
           <button
             type="button"
@@ -3015,38 +3191,71 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
       {/* ===================================================================== */}
       {workspaceMode === 'editor' && (
         <div className="grid grid-cols-1 lg:grid-cols-12 gap-2">
-          {/* Left Document & Folder Explorer Tree */}
-          <div className="lg:col-span-4 panel-surface flex flex-col self-start">
-            <div className="p-2 panel-header space-y-2">
+          {/* Mobile Backdrop for File Tree Slide-Over Drawer */}
+          {showMobileFileDrawer && (
+            <div
+              className="fixed inset-0 bg-black/50 backdrop-blur-xs z-40 lg:hidden animate-in fade-in duration-150"
+              onClick={() => setShowMobileFileDrawer(false)}
+            />
+          )}
+
+          {/* Left Document & Folder Explorer Tree (Desktop Sidebar + Mobile Slide-Over Drawer) */}
+          <div
+            className={`${
+              showMobileFileDrawer
+                ? 'fixed inset-y-0 left-0 z-50 w-[86vw] max-w-sm bg-panel border-r border-border shadow-2xl flex'
+                : 'hidden lg:flex'
+            } lg:col-span-4 panel-surface flex-col self-start max-h-screen lg:max-h-none`}
+          >
+            {/* Mobile Drawer Top Header */}
+            <div className="flex lg:hidden items-center justify-between px-3.5 py-3 border-b border-border bg-panel">
+              <div className="flex items-center gap-2">
+                <FolderTree className="w-4 h-4 text-accent" />
+                <span className="text-sm font-bold text-main">Dateibaum & Ordner</span>
+              </div>
+              <button
+                type="button"
+                onClick={() => setShowMobileFileDrawer(false)}
+                className="p-1.5 text-muted hover:text-main rounded-btn"
+                title="Schließen"
+              >
+                <X className="w-5 h-5" />
+              </button>
+            </div>
+
+            <div className="p-2.5 sm:p-2 panel-header space-y-2">
               <div className="relative">
-                <Search className="w-3.5 h-3.5 text-muted absolute left-2.5 top-1/2 -translate-y-1/2" />
+                <Search className="w-4 h-4 sm:w-3.5 sm:h-3.5 text-muted absolute left-2.5 top-1/2 -translate-y-1/2" />
                 <input
                   type="text"
                   value={searchQuery}
                   onChange={(e) => setSearchQuery(e.target.value)}
                   placeholder="Dateien durchsuchen…"
-                  className="w-full h-7 pl-7 pr-2 input-field text-xs"
+                  className="w-full h-9 sm:h-7 pl-8 sm:pl-7 pr-2 input-field text-sm sm:text-xs"
                 />
               </div>
 
               <div className="flex items-center gap-1.5">
                 <button
                   type="button"
-                  onClick={() => handleCreateDoc(null)}
-                  className="flex-1 btn-action"
+                  onClick={() => {
+                    setShowMobileFileDrawer(false);
+                    handleCreateDoc(null);
+                  }}
+                  className="flex-1 btn-action min-h-[38px] sm:min-h-0 justify-center"
                   title="Neue Datei erstellen"
                 >
-                  <FilePlus className="w-3.5 h-3.5 text-muted" />
+                  <FilePlus className="w-4 h-4 sm:w-3.5 sm:h-3.5 text-muted" />
                   <span>Neue Datei</span>
                 </button>
 
                 <button
                   type="button"
                   onClick={() => handleStartCreateFolder(null)}
-                  className="flex-1 btn-action"
+                  className="flex-1 btn-action min-h-[38px] sm:min-h-0 justify-center"
                   title="Neuen Ordner erstellen"
                 >
-                  <FolderPlus className="w-3.5 h-3.5 text-muted" />
+                  <FolderPlus className="w-4 h-4 sm:w-3.5 sm:h-3.5 text-muted" />
                   <span>Neuer Ordner</span>
                 </button>
               </div>
@@ -3054,7 +3263,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
 
             {isCreatingFolder && newFolderParent === null && (
               <div className="p-2 panel-header bg-canvas flex items-center gap-1.5">
-                <Folder className="w-3.5 h-3.5 text-muted flex-shrink-0" />
+                <Folder className="w-4 h-4 sm:w-3.5 sm:h-3.5 text-muted flex-shrink-0" />
                 <input
                   type="text"
                   autoFocus
@@ -3065,23 +3274,23 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                     if (e.key === 'Escape') setIsCreatingFolder(false);
                   }}
                   placeholder="Neuer Ordnername…"
-                  className="flex-1 h-6 px-1.5 input-field text-xs"
+                  className="flex-1 h-8 sm:h-6 px-2 sm:px-1.5 input-field text-xs"
                 />
                 <button
                   type="button"
                   onClick={handleConfirmCreateFolder}
-                  className="p-1 text-accent hover:text-main rounded-btn"
+                  className="p-1.5 sm:p-1 text-accent hover:text-main rounded-btn"
                   title="Bestätigen"
                 >
-                  <Check className="w-3.5 h-3.5" />
+                  <Check className="w-4 h-4 sm:w-3.5 sm:h-3.5" />
                 </button>
                 <button
                   type="button"
                   onClick={() => setIsCreatingFolder(false)}
-                  className="p-1 text-muted hover:text-main rounded-btn"
+                  className="p-1.5 sm:p-1 text-muted hover:text-main rounded-btn"
                   title="Abbrechen"
                 >
-                  <X className="w-3.5 h-3.5" />
+                  <X className="w-4 h-4 sm:w-3.5 sm:h-3.5" />
                 </button>
               </div>
             )}
@@ -3096,8 +3305,11 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                 <div className="flex items-center justify-center gap-2">
                   <button
                     type="button"
-                    onClick={() => handleCreateDoc(null)}
-                    className="btn-action"
+                    onClick={() => {
+                      setShowMobileFileDrawer(false);
+                      handleCreateDoc(null);
+                    }}
+                    className="btn-action min-h-[38px] sm:min-h-0"
                   >
                     <FilePlus className="w-3.5 h-3.5 text-muted" />
                     <span>Neue Datei</span>
@@ -3105,7 +3317,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                   <button
                     type="button"
                     onClick={() => handleStartCreateFolder(null)}
-                    className="btn-action"
+                    className="btn-action min-h-[38px] sm:min-h-0"
                   >
                     <FolderPlus className="w-3.5 h-3.5 text-muted" />
                     <span>Neuer Ordner</span>
@@ -3113,7 +3325,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                 </div>
               </div>
             ) : (
-              <div className="py-1 max-h-[calc(100vh-240px)] overflow-y-auto">
+              <div className="py-1 flex-1 lg:max-h-[calc(100vh-240px)] overflow-y-auto">
                 {/* Drag target for Root when dragging a note or a folder */}
                 {(draggingDocId || draggingFolderPath) && (
                   <div
@@ -3160,7 +3372,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                     <button
                       type="button"
                       onClick={() => setIsPinnedCollapsed((prev) => !prev)}
-                      className="w-full px-2 py-1 text-[10px] font-bold text-accent uppercase tracking-wider flex items-center justify-between hover:bg-canvas/40 rounded transition-colors"
+                      className="w-full px-2 py-1.5 sm:py-1 text-[10px] font-bold text-accent uppercase tracking-wider flex items-center justify-between hover:bg-canvas/40 rounded transition-colors"
                       title={isPinnedCollapsed ? 'Angepinnte Notizen aufklappen' : 'Angepinnte Notizen einklappen'}
                     >
                       <div className="flex items-center gap-1.5">
@@ -3192,8 +3404,9 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                                 setSelectedDoc(doc);
                                 setZoomedBlockId(null);
                                 setWorkspaceMode('editor');
+                                setShowMobileFileDrawer(false);
                               }}
-                              className={`group flex items-center justify-between px-2 py-1.5 rounded-btn transition-colors cursor-pointer text-xs ${
+                              className={`group flex items-center justify-between px-2 py-2.5 sm:py-1.5 rounded-btn transition-colors cursor-pointer text-sm sm:text-xs ${
                                 isSelected
                                   ? 'bg-panel-elevated border-l-2 border-accent text-main font-medium'
                                   : 'text-muted hover:text-main hover:bg-canvas/50'
@@ -3201,7 +3414,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                               title="Angepinnte Notiz öffnen"
                             >
                               <div className="flex items-center gap-2 min-w-0 flex-1">
-                                <span className="text-sm flex-shrink-0">{doc.icon || '📄'}</span>
+                                <span className="text-base sm:text-sm flex-shrink-0">{doc.icon || '📄'}</span>
                                 <span className="truncate">{doc.title || 'Unbenannt'}</span>
                               </div>
                               <button
@@ -3210,10 +3423,10 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                                   e.stopPropagation();
                                   persistDocument({ ...doc, isPinned: false }, true);
                                 }}
-                                className="opacity-0 group-hover:opacity-100 p-0.5 text-muted hover:text-accent rounded transition-opacity"
+                                className="opacity-100 sm:opacity-0 sm:group-hover:opacity-100 p-1 sm:p-0.5 text-muted hover:text-accent rounded transition-opacity"
                                 title="Von Angepinnt entfernen"
                               >
-                                <Pin className="w-3 h-3 text-accent" />
+                                <Pin className="w-3.5 h-3.5 sm:w-3 sm:h-3 text-accent" />
                               </button>
                             </div>
                           );
@@ -3229,7 +3442,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                     <button
                       type="button"
                       onClick={() => setIsTagsCollapsed((prev) => !prev)}
-                      className="w-full px-2 py-1 text-[10px] font-bold text-muted uppercase tracking-wider flex items-center justify-between hover:bg-canvas/40 rounded transition-colors"
+                      className="w-full px-2 py-1.5 sm:py-1 text-[10px] font-bold text-muted uppercase tracking-wider flex items-center justify-between hover:bg-canvas/40 rounded transition-colors"
                       title={isTagsCollapsed ? 'Themen & Hashtags aufklappen' : 'Themen & Hashtags einklappen'}
                     >
                       <div className="flex items-center gap-1.5 text-accent">
@@ -3243,13 +3456,16 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                       />
                     </button>
                     {!isTagsCollapsed && (
-                      <div className="flex flex-wrap gap-1 px-1.5 py-1 mt-1 max-h-36 overflow-y-auto">
+                      <div className="flex flex-wrap gap-1.5 sm:gap-1 px-1.5 py-1 mt-1 max-h-36 overflow-y-auto">
                         {workspaceTags.map((wt) => (
                           <button
                             key={wt.tag}
                             type="button"
-                            onClick={() => openTagPage(wt.tag)}
-                            className={`px-2 py-0.5 rounded-pill text-[11px] font-medium border flex items-center gap-1 transition-colors ${
+                            onClick={() => {
+                              setShowMobileFileDrawer(false);
+                              openTagPage(wt.tag);
+                            }}
+                            className={`px-2.5 py-1 sm:px-2 sm:py-0.5 rounded-pill text-xs sm:text-[11px] font-medium border flex items-center gap-1 transition-colors ${
                               selectedTag === wt.tag
                                 ? 'bg-accent/20 border-accent text-accent font-semibold'
                                 : 'bg-canvas border-border text-muted hover:border-accent/40 hover:text-main'
diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index 2339d59..6b195bd 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -1,10 +1,14 @@
 import React from 'react';
 import ReactDOM from 'react-dom/client';
 import App from './App';
+import { MobileActionProvider } from './context/MobileActionContext';
 import './index.css';
 
 ReactDOM.createRoot(document.getElementById('root')!).render(
   <React.StrictMode>
-    <App />
+    <MobileActionProvider>
+      <App />
+    </MobileActionProvider>
   </React.StrictMode>
 );
+