feat: enhance mobile layout and accessibility across components

- Added mobile layout support in AdminPage, SecurityDevicesPage, SendsPage, and VaultPage.
- Implemented responsive design adjustments including mobile sidebar and panel transitions.
- Updated table structures to include data labels for better accessibility.
- Introduced new translations for mobile-specific UI elements.
- Enhanced styles for mobile views, including button adjustments and sidebar behaviors.

webapp/src/App.tsx

@@ -1,7 +1,7 @@
 import { useEffect, useMemo, useRef, useState } from 'preact/hooks';
 import { Link, Route, Switch, useLocation } from 'wouter';
 import { useQuery } from '@tanstack/react-query';
-import { ArrowUpDown, Cloud, Clock3, KeyRound, Lock, LogOut, Send as SendIcon, Settings as SettingsIcon, Shield, ShieldUser } from 'lucide-preact';
+import { ArrowUpDown, Cloud, Clock3, Folder, KeyRound, Lock, LogOut, Send as SendIcon, Settings as SettingsIcon, Shield, ShieldUser } from 'lucide-preact';
 import AuthViews from '@/components/AuthViews';
 import ConfirmDialog from '@/components/ConfirmDialog';
 import ToastHost from '@/components/ToastHost';
@@ -99,6 +99,8 @@ const SEND_KEY_SALT = 'bitwarden-send';
 const SEND_KEY_PURPOSE = 'send';
 const IMPORT_ROUTE = '/help/import-export';
 const IMPORT_ROUTE_ALIASES = new Set(['/tools/import', '/tools/import-export', '/tools/import-data', '/import', '/import-export']);
+const SETTINGS_HOME_ROUTE = '/settings';
+const SETTINGS_ACCOUNT_ROUTE = '/settings/account';
 
 function looksLikeCipherString(value: string): boolean {
   return /^\d+\.[A-Za-z0-9+/=]+\|[A-Za-z0-9+/=]+(?:\|[A-Za-z0-9+/=]+)?$/.test(String(value || '').trim());
@@ -318,11 +320,25 @@ export default function App() {
   } | null>(null);
 
   const [toasts, setToasts] = useState<ToastMessage[]>([]);
+  const [mobileLayout, setMobileLayout] = useState(false);
   const [decryptedFolders, setDecryptedFolders] = useState<Folder[]>([]);
   const [decryptedCiphers, setDecryptedCiphers] = useState<Cipher[]>([]);
   const [decryptedSends, setDecryptedSends] = useState<Send[]>([]);
   const migratedPlainFolderIdsRef = useRef<Set<string>>(new Set());
 
+  useEffect(() => {
+    if (typeof window === 'undefined' || typeof window.matchMedia !== 'function') return;
+    const media = window.matchMedia('(max-width: 900px)');
+    const sync = () => setMobileLayout(media.matches);
+    sync();
+    if (typeof media.addEventListener === 'function') {
+      media.addEventListener('change', sync);
+      return () => media.removeEventListener('change', sync);
+    }
+    media.addListener(sync);
+    return () => media.removeListener(sync);
+  }, []);
+
   function setSession(next: SessionState | null) {
     setSessionState(next);
     saveSession(next);
@@ -1581,6 +1597,27 @@ export default function App() {
   const isRecoverTwoFactorRoute = effectiveLocation === '/recover-2fa';
   const isPublicSendRoute = !!publicSendMatch;
   const isImportRoute = location === IMPORT_ROUTE || IMPORT_ROUTE_ALIASES.has(location);
+  const showSidebarToggle = mobileLayout && (location === '/vault' || location === '/sends');
+  const sidebarToggleTitle = location === '/vault' ? t('txt_folders') : t('txt_type');
+  const mobilePrimaryRoute =
+    location === '/sends'
+      ? '/sends'
+      : location === '/vault/totp'
+        ? '/vault/totp'
+        : location === '/vault'
+          ? '/vault'
+          : '/settings';
+  const currentPageTitle = (() => {
+    if (location === '/vault/totp') return t('txt_verification_code');
+    if (location === '/sends') return t('nav_sends');
+    if (location === '/admin') return t('nav_admin_panel');
+    if (location === '/security/devices') return t('nav_device_management');
+    if (location === '/help') return t('nav_backup_strategy');
+    if (isImportRoute) return t('nav_import_export');
+    if (location === SETTINGS_ACCOUNT_ROUTE) return t('nav_account_settings');
+    if (location === SETTINGS_HOME_ROUTE) return t('txt_settings');
+    return t('nav_my_vault');
+  })();
 
   useEffect(() => {
     if (phase === 'app' && location === '/' && !isPublicSendRoute) navigate('/vault');
@@ -1598,6 +1635,12 @@ export default function App() {
     }
   }, [phase, profile?.role, location, navigate]);
 
+  useEffect(() => {
+    if (phase === 'app' && !mobileLayout && location === SETTINGS_HOME_ROUTE) {
+      navigate(SETTINGS_ACCOUNT_ROUTE);
+    }
+  }, [phase, mobileLayout, location, navigate]);
+
   if (jwtWarning) {
     return <JwtWarningPage reason={jwtWarning.reason} minLength={jwtWarning.minLength} />;
   }
@@ -1709,7 +1752,8 @@ export default function App() {
           <header className="topbar">
             <div className="brand">
               <img src="/logo-64.png" alt="NodeWarden logo" className="brand-logo" />
-              <span>NodeWarden</span>
+              <span className="brand-name">NodeWarden</span>
+              <span className="mobile-page-title">{currentPageTitle}</span>
             </div>
             <div className="topbar-actions">
               <div className="user-chip">
@@ -1719,6 +1763,20 @@ export default function App() {
               <button type="button" className="btn btn-secondary small" onClick={handleLock}>
                 <Lock size={14} className="btn-icon" /> {t('txt_lock')}
               </button>
+              {showSidebarToggle && (
+                <button
+                  type="button"
+                  className="btn btn-secondary small mobile-sidebar-toggle"
+                  aria-label={sidebarToggleTitle}
+                  title={sidebarToggleTitle}
+                  onClick={() => window.dispatchEvent(new CustomEvent('nodewarden:toggle-sidebar'))}
+                >
+                  <Folder size={16} className="btn-icon" />
+                </button>
+              )}
+              <button type="button" className="btn btn-secondary small mobile-lock-btn" aria-label={t('txt_lock')} title={t('txt_lock')} onClick={handleLock}>
+                <Lock size={14} className="btn-icon" />
+              </button>
               <button type="button" className="btn btn-secondary small" onClick={handleLogout}>
                 <LogOut size={14} className="btn-icon" /> {t('txt_sign_out')}
               </button>
@@ -1745,7 +1803,7 @@ export default function App() {
                   <span>{t('nav_admin_panel')}</span>
                 </Link>
               )}
-              <Link href="/settings" className={`side-link ${location === '/settings' ? 'active' : ''}`}>
+              <Link href={SETTINGS_ACCOUNT_ROUTE} className={`side-link ${location === SETTINGS_ACCOUNT_ROUTE ? 'active' : ''}`}>
                 <SettingsIcon size={16} />
                 <span>{t('nav_account_settings')}</span>
               </Link>
@@ -1800,127 +1858,203 @@ export default function App() {
                     onDownloadAttachment={downloadVaultAttachment}
                   />
                 </Route>
+                <Route path={SETTINGS_ACCOUNT_ROUTE}>
+                  {profile && (
+                    <div className="stack">
+                      {mobileLayout && (
+                        <div className="mobile-settings-subhead">
+                          <button type="button" className="btn btn-secondary small mobile-settings-back" onClick={() => navigate(SETTINGS_HOME_ROUTE)}>
+                            <span className="btn-icon" aria-hidden="true">{"<"}</span>
+                            {t('txt_back')}
+                          </button>
+                        </div>
+                      )}
+                      <SettingsPage
+                        profile={profile}
+                        totpEnabled={!!totpStatusQuery.data?.enabled}
+                        onChangePassword={changePasswordAction}
+                        onEnableTotp={async (secret, token) => {
+                          await enableTotpAction(secret, token);
+                          await totpStatusQuery.refetch();
+                        }}
+                        onOpenDisableTotp={() => setDisableTotpOpen(true)}
+                        onGetRecoveryCode={getRecoveryCodeAction}
+                        onNotify={pushToast}
+                      />
+                    </div>
+                  )}
+                </Route>
                 <Route path="/settings">
                   {profile && (
-                    <SettingsPage
+                    <section className="card mobile-settings-card">
-                      profile={profile}
+                      <div className="mobile-settings-links">
-                      totpEnabled={!!totpStatusQuery.data?.enabled}
+                        <Link href={SETTINGS_ACCOUNT_ROUTE} className="mobile-settings-link">
-                      onChangePassword={changePasswordAction}
+                          <SettingsIcon size={18} />
-                      onEnableTotp={async (secret, token) => {
+                          <span>{t('nav_account_settings')}</span>
-                        await enableTotpAction(secret, token);
+                        </Link>
-                        await totpStatusQuery.refetch();
+                        <Link href="/security/devices" className="mobile-settings-link">
-                      }}
+                          <Shield size={18} />
-                      onOpenDisableTotp={() => setDisableTotpOpen(true)}
+                          <span>{t('nav_device_management')}</span>
-                      onGetRecoveryCode={getRecoveryCodeAction}
+                        </Link>
-                      onNotify={pushToast}
+                        <Link href={IMPORT_ROUTE} className="mobile-settings-link">
-                    />
+                          <ArrowUpDown size={18} />
+                          <span>{t('nav_import_export')}</span>
+                        </Link>
+                        {profile.role === 'admin' && (
+                          <Link href="/admin" className="mobile-settings-link">
+                            <ShieldUser size={18} />
+                            <span>{t('nav_admin_panel')}</span>
+                          </Link>
+                        )}
+                        {profile.role === 'admin' && (
+                          <Link href="/help" className="mobile-settings-link">
+                            <Cloud size={18} />
+                            <span>{t('nav_backup_strategy')}</span>
+                          </Link>
+                        )}
+                      </div>
+                      <button type="button" className="btn btn-secondary mobile-settings-logout" onClick={handleLogout}>
+                        <LogOut size={14} className="btn-icon" />
+                        {t('txt_sign_out')}
+                      </button>
+                    </section>
                   )}
                 </Route>
                 <Route path="/security/devices">
-                  <SecurityDevicesPage
+                  <div className="stack">
-                    devices={authorizedDevicesQuery.data || []}
+                    {mobileLayout && (
-                    loading={authorizedDevicesQuery.isFetching}
+                      <div className="mobile-settings-subhead">
-                    onRefresh={() => void refreshAuthorizedDevices()}
+                        <button type="button" className="btn btn-secondary small mobile-settings-back" onClick={() => navigate(SETTINGS_HOME_ROUTE)}>
-                    onRevokeTrust={(device) => {
+                          <span className="btn-icon" aria-hidden="true">{"<"}</span>
-                      setConfirm({
+                          {t('txt_back')}
-                        title: t('txt_revoke_device_authorization'),
+                        </button>
-                        message: t('txt_revoke_30_day_totp_trust_for_name', { name: device.name }),
+                      </div>
-                        danger: true,
+                    )}
-                        onConfirm: () => {
+                    <SecurityDevicesPage
-                          setConfirm(null);
+                      devices={authorizedDevicesQuery.data || []}
-                          void revokeDeviceTrustAction(device);
+                      loading={authorizedDevicesQuery.isFetching}
-                        },
+                      onRefresh={() => void refreshAuthorizedDevices()}
-                      });
+                      onRevokeTrust={(device) => {
-                    }}
+                        setConfirm({
-                    onRemoveDevice={(device) => {
+                          title: t('txt_revoke_device_authorization'),
-                      setConfirm({
+                          message: t('txt_revoke_30_day_totp_trust_for_name', { name: device.name }),
-                        title: t('txt_remove_device'),
+                          danger: true,
-                        message: t('txt_remove_device_name_and_clear_its_2fa_trust', { name: device.name }),
+                          onConfirm: () => {
-                        danger: true,
+                            setConfirm(null);
-                        onConfirm: () => {
+                            void revokeDeviceTrustAction(device);
-                          setConfirm(null);
+                          },
-                          void removeDeviceAction(device);
+                        });
-                        },
+                      }}
-                      });
+                      onRemoveDevice={(device) => {
-                    }}
+                        setConfirm({
-                    onRevokeAll={() => {
+                          title: t('txt_remove_device'),
-                      setConfirm({
+                          message: t('txt_remove_device_name_and_clear_its_2fa_trust', { name: device.name }),
-                        title: t('txt_revoke_all_trusted_devices'),
+                          danger: true,
-                        message: t('txt_revoke_30_day_totp_trust_from_all_devices'),
+                          onConfirm: () => {
-                        danger: true,
+                            setConfirm(null);
-                        onConfirm: () => {
+                            void removeDeviceAction(device);
-                          setConfirm(null);
+                          },
-                          void revokeAllDeviceTrustAction();
+                        });
-                        },
+                      }}
-                      });
+                      onRevokeAll={() => {
-                    }}
+                        setConfirm({
-                  />
+                          title: t('txt_revoke_all_trusted_devices'),
+                          message: t('txt_revoke_30_day_totp_trust_from_all_devices'),
+                          danger: true,
+                          onConfirm: () => {
+                            setConfirm(null);
+                            void revokeAllDeviceTrustAction();
+                          },
+                        });
+                      }}
+                    />
+                  </div>
                 </Route>
                 <Route path="/admin">
-                  <AdminPage
+                  <div className="stack">
-                    currentUserId={profile?.id || ''}
+                    {mobileLayout && (
-                    users={usersQuery.data || []}
+                      <div className="mobile-settings-subhead">
-                    invites={invitesQuery.data || []}
+                        <button type="button" className="btn btn-secondary small mobile-settings-back" onClick={() => navigate(SETTINGS_HOME_ROUTE)}>
-                    onRefresh={() => {
+                          <span className="btn-icon" aria-hidden="true">{"<"}</span>
-                      void usersQuery.refetch();
+                          {t('txt_back')}
-                      void invitesQuery.refetch();
+                        </button>
-                    }}
+                      </div>
-                    onCreateInvite={async (hours) => {
+                    )}
-                      await createInvite(authedFetch, hours);
+                    <AdminPage
-                      await invitesQuery.refetch();
+                      currentUserId={profile?.id || ''}
-                      pushToast('success', t('txt_invite_created'));
+                      users={usersQuery.data || []}
-                    }}
+                      invites={invitesQuery.data || []}
-                    onDeleteAllInvites={async () => {
+                      onRefresh={() => {
-                      setConfirm({
+                        void usersQuery.refetch();
-                        title: t('txt_delete_all_invites'),
+                        void invitesQuery.refetch();
-                        message: t('txt_delete_all_invite_codes_active_inactive'),
+                      }}
-                        danger: true,
+                      onCreateInvite={async (hours) => {
-                        onConfirm: () => {
+                        await createInvite(authedFetch, hours);
-                          setConfirm(null);
+                        await invitesQuery.refetch();
-                          void (async () => {
+                        pushToast('success', t('txt_invite_created'));
-                            await deleteAllInvites(authedFetch);
+                      }}
-                            await invitesQuery.refetch();
+                      onDeleteAllInvites={async () => {
-                            pushToast('success', t('txt_all_invites_deleted'));
+                        setConfirm({
-                          })();
+                          title: t('txt_delete_all_invites'),
-                        },
+                          message: t('txt_delete_all_invite_codes_active_inactive'),
-                      });
+                          danger: true,
-                    }}
+                          onConfirm: () => {
-                    onToggleUserStatus={async (userId, status) => {
+                            setConfirm(null);
-                      await setUserStatus(authedFetch, userId, status === 'active' ? 'banned' : 'active');
+                            void (async () => {
-                      await usersQuery.refetch();
+                              await deleteAllInvites(authedFetch);
-                      pushToast('success', t('txt_user_status_updated'));
+                              await invitesQuery.refetch();
-                    }}
+                              pushToast('success', t('txt_all_invites_deleted'));
-                    onDeleteUser={async (userId) => {
+                            })();
-                      setConfirm({
+                          },
-                        title: t('txt_delete_user'),
+                        });
-                        message: t('txt_delete_this_user_and_all_user_data'),
+                      }}
-                        danger: true,
+                      onToggleUserStatus={async (userId, status) => {
-                        onConfirm: () => {
+                        await setUserStatus(authedFetch, userId, status === 'active' ? 'banned' : 'active');
-                          setConfirm(null);
+                        await usersQuery.refetch();
-                          void (async () => {
+                        pushToast('success', t('txt_user_status_updated'));
-                            await deleteUser(authedFetch, userId);
+                      }}
-                            await usersQuery.refetch();
+                      onDeleteUser={async (userId) => {
-                            pushToast('success', t('txt_user_deleted'));
+                        setConfirm({
-                          })();
+                          title: t('txt_delete_user'),
-                        },
+                          message: t('txt_delete_this_user_and_all_user_data'),
-                      });
+                          danger: true,
-                    }}
+                          onConfirm: () => {
-                    onRevokeInvite={async (code) => {
+                            setConfirm(null);
-                      await revokeInvite(authedFetch, code);
+                            void (async () => {
-                      await invitesQuery.refetch();
+                              await deleteUser(authedFetch, userId);
-                      pushToast('success', t('txt_invite_revoked'));
+                              await usersQuery.refetch();
-                    }}
+                              pushToast('success', t('txt_user_deleted'));
-                  />
+                            })();
+                          },
+                        });
+                      }}
+                      onRevokeInvite={async (code) => {
+                        await revokeInvite(authedFetch, code);
+                        await invitesQuery.refetch();
+                        pushToast('success', t('txt_invite_revoked'));
+                      }}
+                    />
+                  </div>
                 </Route>
                 <Route path={IMPORT_ROUTE}>
-                  <ImportPage
+                  <div className="stack">
-                    onImport={handleImportAction}
+                    {mobileLayout && (
-                    onImportEncryptedRaw={handleImportEncryptedRawAction}
+                      <div className="mobile-settings-subhead">
-                    accountKeys={session?.symEncKey && session?.symMacKey ? { encB64: session.symEncKey, macB64: session.symMacKey } : null}
+                        <button type="button" className="btn btn-secondary small mobile-settings-back" onClick={() => navigate(SETTINGS_HOME_ROUTE)}>
-                    onNotify={pushToast}
+                          <span className="btn-icon" aria-hidden="true">{"<"}</span>
-                    folders={decryptedFolders}
+                          {t('txt_back')}
-                    onExport={handleExportAction}
+                        </button>
-                  />
+                      </div>
+                    )}
+                    <ImportPage
+                      onImport={handleImportAction}
+                      onImportEncryptedRaw={handleImportEncryptedRawAction}
+                      accountKeys={session?.symEncKey && session?.symMacKey ? { encB64: session.symEncKey, macB64: session.symMacKey } : null}
+                      onNotify={pushToast}
+                      folders={decryptedFolders}
+                      onExport={handleExportAction}
+                    />
+                  </div>
                 </Route>
                 <Route path="/tools/import">
                   <ImportPage
@@ -1974,12 +2108,41 @@ export default function App() {
                 </Route>
                 <Route path="/help">
                   {profile?.role === 'admin' ? (
-                    <HelpPage onExport={handleBackupExportAction} onImport={handleBackupImportAction} onNotify={pushToast} />
+                    <div className="stack">
+                      {mobileLayout && (
+                        <div className="mobile-settings-subhead">
+                          <button type="button" className="btn btn-secondary small mobile-settings-back" onClick={() => navigate(SETTINGS_HOME_ROUTE)}>
+                            <span className="btn-icon" aria-hidden="true">{"<"}</span>
+                            {t('txt_back')}
+                          </button>
+                        </div>
+                      )}
+                      <HelpPage onExport={handleBackupExportAction} onImport={handleBackupImportAction} onNotify={pushToast} />
+                    </div>
                   ) : null}
                 </Route>
               </Switch>
             </main>
           </div>
+
+          <nav className="mobile-tabbar" aria-label={t('txt_menu')}>
+            <Link href="/vault" className={`mobile-tab ${mobilePrimaryRoute === '/vault' ? 'active' : ''}`}>
+              <KeyRound size={18} />
+              <span>{t('nav_my_vault')}</span>
+            </Link>
+            <Link href="/vault/totp" className={`mobile-tab ${mobilePrimaryRoute === '/vault/totp' ? 'active' : ''}`}>
+              <Clock3 size={18} />
+              <span>{t('txt_verification_code')}</span>
+            </Link>
+            <Link href="/sends" className={`mobile-tab ${mobilePrimaryRoute === '/sends' ? 'active' : ''}`}>
+              <SendIcon size={18} />
+              <span>{t('nav_sends')}</span>
+            </Link>
+            <Link href="/settings" className={`mobile-tab ${mobilePrimaryRoute === '/settings' ? 'active' : ''}`}>
+              <SettingsIcon size={18} />
+              <span>{t('txt_settings')}</span>
+            </Link>
+          </nav>
         </div>
       </div>
 

webapp/src/components/AdminPage.tsx

@@ -56,11 +56,11 @@ export default function AdminPage(props: AdminPageProps) {
           <tbody>
             {props.users.map((user) => (
               <tr key={user.id}>
-                <td>{user.email}</td>
+                <td data-label={t('txt_email')}>{user.email}</td>
-                <td>{user.name || t('txt_dash')}</td>
+                <td data-label={t('txt_name')}>{user.name || t('txt_dash')}</td>
-                <td>{roleText(user.role)}</td>
+                <td data-label={t('txt_role')}>{roleText(user.role)}</td>
-                <td>{statusText(user.status)}</td>
+                <td data-label={t('txt_status')}>{statusText(user.status)}</td>
-                <td>
+                <td data-label={t('txt_actions')}>
                   <div className="actions">
                     <button
                       type="button"
@@ -126,10 +126,10 @@ export default function AdminPage(props: AdminPageProps) {
           <tbody>
             {pagedInvites.map((invite) => (
               <tr key={invite.code}>
-                <td>{invite.code}</td>
+                <td data-label={t('txt_code')}>{invite.code}</td>
-                <td>{statusText(invite.status)}</td>
+                <td data-label={t('txt_status')}>{statusText(invite.status)}</td>
-                <td>{formatExpiresAt(invite.expiresAt)}</td>
+                <td data-label={t('txt_expires_at')}>{formatExpiresAt(invite.expiresAt)}</td>
-                <td>
+                <td data-label={t('txt_actions')}>
                   <div className="actions invite-row-actions">
                     <button
                       type="button"

webapp/src/components/SecurityDevicesPage.tsx

@@ -79,14 +79,14 @@ export default function SecurityDevicesPage(props: SecurityDevicesPageProps) {
           <tbody>
             {props.devices.map((device) => (
               <tr key={device.identifier}>
-                <td>
+                <td data-label={t('txt_device')}>
                   <div>{device.name || t('txt_unknown_device')}</div>
                   <div className="muted-inline">{device.identifier}</div>
                 </td>
-                <td>{mapDeviceTypeName(device.type)}</td>
+                <td data-label={t('txt_type')}>{mapDeviceTypeName(device.type)}</td>
-                <td>{formatDateTime(device.creationDate)}</td>
+                <td data-label={t('txt_added')}>{formatDateTime(device.creationDate)}</td>
-                <td>{formatDateTime(device.revisionDate)}</td>
+                <td data-label={t('txt_last_seen')}>{formatDateTime(device.revisionDate)}</td>
-                <td>
+                <td data-label={t('txt_trusted_until')}>
                   {device.trusted ? (
                     <div className="trusted-cell">
                       <Clock3 size={13} />
@@ -96,7 +96,7 @@ export default function SecurityDevicesPage(props: SecurityDevicesPageProps) {
                     <span className="muted-inline">{t('txt_not_trusted')}</span>
                   )}
                 </td>
-                <td>
+                <td data-label={t('txt_actions')}>
                   <div className="actions">
                     <button
                       type="button"

webapp/src/components/SendsPage.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useMemo, useState } from 'preact/hooks';
-import { CheckCheck, Copy, Eye, EyeOff, File, FileText, LayoutGrid, Pencil, Plus, RefreshCw, Save, Send as SendIcon, Trash2, X } from 'lucide-preact';
+import { CheckCheck, ChevronLeft, Copy, Eye, EyeOff, File, FileText, LayoutGrid, Pencil, Plus, RefreshCw, Save, Send as SendIcon, Trash2, X } from 'lucide-preact';
 import type { Send, SendDraft } from '@/lib/types';
 import { t } from '@/lib/i18n';
 
@@ -16,6 +16,7 @@ interface SendsPageProps {
 
 type SendTypeFilter = 'all' | 'text' | 'file';
 const AUTO_COPY_KEY = 'nodewarden.send.auto_copy_link.v1';
+const MOBILE_LAYOUT_QUERY = '(max-width: 900px)';
 
 function daysFromNow(iso: string | null | undefined, fallback: number): string {
   if (!iso) return String(fallback);
@@ -67,6 +68,9 @@ export default function SendsPage(props: SendsPageProps) {
   const [draft, setDraft] = useState<SendDraft | null>(null);
   const [showPassword, setShowPassword] = useState(false);
   const [selectedMap, setSelectedMap] = useState<Record<string, boolean>>({});
+  const [isMobileLayout, setIsMobileLayout] = useState(false);
+  const [mobilePanel, setMobilePanel] = useState<'list' | 'detail' | 'edit'>('list');
+  const [mobileSidebarOpen, setMobileSidebarOpen] = useState(false);
   const [autoCopyLink, setAutoCopyLink] = useState<boolean>(() => {
     try {
       return localStorage.getItem(AUTO_COPY_KEY) === '1';
@@ -75,6 +79,27 @@ export default function SendsPage(props: SendsPageProps) {
     }
   });
 
+  useEffect(() => {
+    if (typeof window === 'undefined' || typeof window.matchMedia !== 'function') return;
+    const media = window.matchMedia(MOBILE_LAYOUT_QUERY);
+    const sync = () => setIsMobileLayout(media.matches);
+    sync();
+    if (typeof media.addEventListener === 'function') {
+      media.addEventListener('change', sync);
+      return () => media.removeEventListener('change', sync);
+    }
+    media.addListener(sync);
+    return () => media.removeListener(sync);
+  }, []);
+
+  useEffect(() => {
+    const onToggleSidebar = () => {
+      setMobileSidebarOpen((open) => !open);
+    };
+    window.addEventListener('nodewarden:toggle-sidebar', onToggleSidebar);
+    return () => window.removeEventListener('nodewarden:toggle-sidebar', onToggleSidebar);
+  }, []);
+
   useEffect(() => {
     try {
       localStorage.setItem(AUTO_COPY_KEY, autoCopyLink ? '1' : '0');
@@ -83,6 +108,19 @@ export default function SendsPage(props: SendsPageProps) {
     }
   }, [autoCopyLink]);
 
+  useEffect(() => {
+    if (!isMobileLayout) {
+      setMobilePanel('list');
+      setMobileSidebarOpen(false);
+      return;
+    }
+    if (isEditing) {
+      setMobilePanel('edit');
+    } else if (!selectedId) {
+      setMobilePanel('list');
+    }
+  }, [isMobileLayout, isEditing, selectedId]);
+
   const filteredSends = useMemo(() => {
     const q = search.trim().toLowerCase();
     return props.sends.filter((send) => {
@@ -141,6 +179,7 @@ export default function SendsPage(props: SendsPageProps) {
       setIsCreating(false);
       setDraft(null);
       setShowPassword(false);
+      if (isMobileLayout) setMobilePanel('detail');
     } finally {
       setBusy(false);
     }
@@ -153,6 +192,7 @@ export default function SendsPage(props: SendsPageProps) {
       if (selectedId === send.id) setSelectedId(null);
       setIsEditing(false);
       setDraft(null);
+      if (isMobileLayout) setMobilePanel('list');
     } finally {
       setBusy(false);
     }
@@ -176,8 +216,17 @@ export default function SendsPage(props: SendsPageProps) {
   }
 
   return (
-    <div className="vault-grid">
+    <div className={`vault-grid ${isMobileLayout ? `mobile-panel-${mobilePanel}` : ''}`}>
-      <aside className="sidebar">
+      {isMobileLayout && mobileSidebarOpen && <div className="mobile-sidebar-mask" onClick={() => setMobileSidebarOpen(false)} />}
+      <aside className={`sidebar ${isMobileLayout ? 'mobile-sidebar-sheet' : ''} ${isMobileLayout && mobileSidebarOpen ? 'open' : ''}`}>
+        {isMobileLayout && (
+          <div className="mobile-sidebar-head">
+            <div className="mobile-sidebar-title">{t('txt_all_sends')}</div>
+            <button type="button" className="mobile-sidebar-close" onClick={() => setMobileSidebarOpen(false)} aria-label={t('txt_close')}>
+              <X size={16} />
+            </button>
+          </div>
+        )}
         <div className="sidebar-block">
           <div className="sidebar-title">{t('txt_all_sends')}</div>
           <button type="button" className={`tree-btn ${typeFilter === 'all' ? 'active' : ''}`} onClick={() => setTypeFilter('all')}>
@@ -206,7 +255,7 @@ export default function SendsPage(props: SendsPageProps) {
             value={search}
             onInput={(e) => setSearch((e.currentTarget as HTMLInputElement).value)}
           />
-          <button type="button" className="btn btn-secondary small" disabled={busy || props.loading} onClick={() => void props.onRefresh()}>
+          <button type="button" className="btn btn-secondary small list-icon-btn" disabled={busy || props.loading} onClick={() => void props.onRefresh()}>
             <RefreshCw size={14} className="btn-icon" /> {t('txt_refresh')}
           </button>
         </div>
@@ -235,16 +284,20 @@ export default function SendsPage(props: SendsPageProps) {
           )}
           <button
             type="button"
-            className="btn btn-primary small"
+            className="btn btn-primary small mobile-fab-trigger"
             disabled={busy}
+            aria-label={t('txt_add')}
+            title={t('txt_add')}
             onClick={() => {
               setIsCreating(true);
               setIsEditing(true);
               setDraft(buildDefaultDraft());
               setShowPassword(false);
+              if (isMobileLayout) setMobilePanel('edit');
+              setMobileSidebarOpen(false);
             }}
           >
-            <Plus size={14} className="btn-icon" /> {t('txt_add')}
+            <Plus size={14} className="btn-icon" />
           </button>
         </div>
         <div className="list-panel">
@@ -269,6 +322,8 @@ export default function SendsPage(props: SendsPageProps) {
                   setIsEditing(false);
                   setIsCreating(false);
                   setDraft(null);
+                  if (isMobileLayout) setMobilePanel('detail');
+                  setMobileSidebarOpen(false);
                 }}
               >
                 <div className="list-icon-wrap">
@@ -289,7 +344,29 @@ export default function SendsPage(props: SendsPageProps) {
         </div>
       </section>
 
-      <section className="detail-col">
+      <section className={`detail-col ${isMobileLayout ? 'mobile-detail-sheet' : ''} ${isMobileLayout && mobilePanel !== 'list' ? 'open' : ''}`}>
+        {isMobileLayout && mobilePanel !== 'list' && (
+          <div className="mobile-panel-head">
+            <button
+              type="button"
+              className="btn btn-secondary small mobile-panel-back"
+              onClick={() => {
+                if (isEditing) {
+                  setIsEditing(false);
+                  setIsCreating(false);
+                  setDraft(null);
+                  setShowPassword(false);
+                  setMobilePanel(selectedSend ? 'detail' : 'list');
+                } else {
+                  setMobilePanel('list');
+                }
+              }}
+            >
+              <ChevronLeft size={14} className="btn-icon" />
+              {t('txt_back')}
+            </button>
+          </div>
+        )}
         {isEditing && draft && (
           <div className="card">
             <h3 className="detail-title">{isCreating ? t('txt_new_send') : t('txt_edit_send')}</h3>
@@ -369,7 +446,18 @@ export default function SendsPage(props: SendsPageProps) {
               <button type="button" className="btn btn-primary small" disabled={busy} onClick={() => void saveDraft()}>
                 <Save size={14} className="btn-icon" /> {t('txt_save')}
               </button>
-              <button type="button" className="btn btn-secondary small" disabled={busy} onClick={() => { setIsEditing(false); setIsCreating(false); setDraft(null); setShowPassword(false); }}>
+              <button
+                type="button"
+                className="btn btn-secondary small"
+                disabled={busy}
+                onClick={() => {
+                  setIsEditing(false);
+                  setIsCreating(false);
+                  setDraft(null);
+                  setShowPassword(false);
+                  if (isMobileLayout) setMobilePanel(selectedSend ? 'detail' : 'list');
+                }}
+              >
                 <X size={14} className="btn-icon" /> {t('txt_cancel')}
               </button>
             </div>

webapp/src/components/VaultPage.tsx

@@ -6,6 +6,7 @@ import {
   ArrowUpDown,
   Check,
   CheckCheck,
+  ChevronLeft,
   Clipboard,
   CreditCard,
   Download,
@@ -76,6 +77,7 @@ const CREATE_TYPE_OPTIONS: TypeOption[] = [
 ];
 
 const VAULT_SORT_STORAGE_KEY = 'nodewarden.vault.sort.v1';
+const MOBILE_LAYOUT_QUERY = '(max-width: 900px)';
 const VAULT_SORT_OPTIONS: Array<{ value: VaultSortMode; label: string }> = [
   { value: 'edited', label: t('txt_sort_last_edited') },
   { value: 'created', label: t('txt_sort_created') },
@@ -398,12 +400,36 @@ export default function VaultPage(props: VaultPageProps) {
   const [repromptOpen, setRepromptOpen] = useState(false);
   const [repromptPassword, setRepromptPassword] = useState('');
   const [repromptApprovedCipherId, setRepromptApprovedCipherId] = useState<string | null>(null);
+  const [isMobileLayout, setIsMobileLayout] = useState(false);
+  const [mobilePanel, setMobilePanel] = useState<'list' | 'detail' | 'edit'>('list');
+  const [mobileSidebarOpen, setMobileSidebarOpen] = useState(false);
   const createMenuRef = useRef<HTMLDivElement | null>(null);
   const sortMenuRef = useRef<HTMLDivElement | null>(null);
   const attachmentInputRef = useRef<HTMLInputElement | null>(null);
   const sshSeedTicketRef = useRef(0);
   const sshFingerprintTicketRef = useRef(0);
 
+  useEffect(() => {
+    if (typeof window === 'undefined' || typeof window.matchMedia !== 'function') return;
+    const media = window.matchMedia(MOBILE_LAYOUT_QUERY);
+    const sync = () => setIsMobileLayout(media.matches);
+    sync();
+    if (typeof media.addEventListener === 'function') {
+      media.addEventListener('change', sync);
+      return () => media.removeEventListener('change', sync);
+    }
+    media.addListener(sync);
+    return () => media.removeListener(sync);
+  }, []);
+
+  useEffect(() => {
+    const onToggleSidebar = () => {
+      setMobileSidebarOpen((open) => !open);
+    };
+    window.addEventListener('nodewarden:toggle-sidebar', onToggleSidebar);
+    return () => window.removeEventListener('nodewarden:toggle-sidebar', onToggleSidebar);
+  }, []);
+
   useEffect(() => {
     const onQuickAdd = () => {
       startCreate(1);
@@ -475,6 +501,19 @@ export default function VaultPage(props: VaultPageProps) {
     setRepromptOpen(false);
   }, [selectedCipherId]);
 
+  useEffect(() => {
+    if (!isMobileLayout) {
+      setMobilePanel('list');
+      setMobileSidebarOpen(false);
+      return;
+    }
+    if (isEditing) {
+      setMobilePanel('edit');
+    } else if (!selectedCipherId) {
+      setMobilePanel('list');
+    }
+  }, [isMobileLayout, isEditing, selectedCipherId]);
+
   useEffect(() => {
     if (searchComposing) return;
     const timer = window.setTimeout(() => setSearchQuery(searchInput.trim().toLowerCase()), 90);
@@ -613,6 +652,8 @@ function folderName(id: string | null | undefined): string {
     setLocalError('');
     setAttachmentQueue([]);
     setRemovedAttachmentIds({});
+    if (isMobileLayout) setMobilePanel('edit');
+    setMobileSidebarOpen(false);
     if (type === 5) void seedSshDefaults();
   }
 
@@ -625,15 +666,19 @@ function folderName(id: string | null | undefined): string {
     setLocalError('');
     setAttachmentQueue([]);
     setRemovedAttachmentIds({});
+    if (isMobileLayout) setMobilePanel('edit');
+    setMobileSidebarOpen(false);
   }
 
   function cancelEdit(): void {
+    const returnToDetail = isMobileLayout && !isCreating && !!selectedCipher;
     setDraft(null);
     setIsEditing(false);
     setIsCreating(false);
     setLocalError('');
     setAttachmentQueue([]);
     setRemovedAttachmentIds({});
+    if (isMobileLayout) setMobilePanel(returnToDetail ? 'detail' : 'list');
   }
 
   function updateDraft(patch: Partial<VaultDraft>): void {
@@ -755,6 +800,7 @@ function folderName(id: string | null | undefined): string {
       setLocalError('');
       setAttachmentQueue([]);
       setRemovedAttachmentIds({});
+      if (isMobileLayout) setMobilePanel('detail');
     } finally {
       setBusy(false);
     }
@@ -767,6 +813,7 @@ function folderName(id: string | null | undefined): string {
       await props.onDelete(pendingDelete);
       setPendingDelete(null);
       cancelEdit();
+      if (isMobileLayout) setMobilePanel('list');
     } finally {
       setBusy(false);
     }
@@ -862,8 +909,17 @@ function folderName(id: string | null | undefined): string {
 
   return (
     <>
-      <div className="vault-grid">
+      <div className={`vault-grid ${isMobileLayout ? `mobile-panel-${mobilePanel}` : ''}`}>
-        <aside className="sidebar">
+        {isMobileLayout && mobileSidebarOpen && <div className="mobile-sidebar-mask" onClick={() => setMobileSidebarOpen(false)} />}
+        <aside className={`sidebar ${isMobileLayout ? 'mobile-sidebar-sheet' : ''} ${isMobileLayout && mobileSidebarOpen ? 'open' : ''}`}>
+          {isMobileLayout && (
+            <div className="mobile-sidebar-head">
+              <div className="mobile-sidebar-title">{t('txt_folders')}</div>
+              <button type="button" className="mobile-sidebar-close" onClick={() => setMobileSidebarOpen(false)} aria-label={t('txt_close')}>
+                <X size={16} />
+              </button>
+            </div>
+          )}
           <div className="sidebar-block">
             <button type="button" className={`tree-btn ${sidebarFilter.kind === 'all' ? 'active' : ''}`} onClick={() => setSidebarFilter({ kind: 'all' })}>
               <LayoutGrid size={14} className="tree-icon" /> <span className="tree-label">{t('txt_all_items')}</span>
@@ -978,7 +1034,7 @@ function folderName(id: string | null | undefined): string {
                 </div>
               )}
             </div>
-            <button type="button" className="btn btn-secondary small" disabled={busy || props.loading} onClick={() => void syncVault()}>
+            <button type="button" className="btn btn-secondary small list-icon-btn" disabled={busy || props.loading} onClick={() => void syncVault()}>
               <RefreshCw size={14} className="btn-icon" /> {t('txt_sync_vault')}
             </button>
           </div>
@@ -998,9 +1054,15 @@ function folderName(id: string | null | undefined): string {
             >
               <CheckCheck size={14} className="btn-icon" /> {t('txt_select_all')}
             </button>
-            <div className="create-menu-wrap" ref={createMenuRef}>
+            <div className="create-menu-wrap mobile-fab-wrap" ref={createMenuRef}>
-              <button type="button" className="btn btn-primary small" onClick={() => setCreateMenuOpen((x) => !x)}>
+              <button
-                <Plus size={14} className="btn-icon" /> {t('txt_add')}
+                type="button"
+                className="btn btn-primary small mobile-fab-trigger"
+                aria-label={t('txt_add')}
+                title={t('txt_add')}
+                onClick={() => setCreateMenuOpen((x) => !x)}
+              >
+                <Plus size={14} className="btn-icon" />
               </button>
               {createMenuOpen && (
                 <div className="create-menu">
@@ -1056,6 +1118,8 @@ function folderName(id: string | null | undefined): string {
                     }
                     setSelectedCipherId(cipher.id);
                     setRepromptApprovedCipherId(null);
+                    if (isMobileLayout) setMobilePanel('detail');
+                    setMobileSidebarOpen(false);
                   }}
                 >
                   <div className="list-icon-wrap">
@@ -1072,7 +1136,22 @@ function folderName(id: string | null | undefined): string {
           </div>
         </section>
 
-        <section className="detail-col">
+        <section className={`detail-col ${isMobileLayout ? 'mobile-detail-sheet' : ''} ${isMobileLayout && mobilePanel !== 'list' ? 'open' : ''}`}>
+          {isMobileLayout && mobilePanel !== 'list' && (
+            <div className="mobile-panel-head">
+              <button
+                type="button"
+                className="btn btn-secondary small mobile-panel-back"
+                onClick={() => {
+                  if (isEditing) cancelEdit();
+                  else setMobilePanel('list');
+                }}
+              >
+                <ChevronLeft size={14} className="btn-icon" />
+                {t('txt_back')}
+              </button>
+            </div>
+          )}
           {isEditing && draft && (
             <>
               <div className="card">

webapp/src/lib/i18n.ts

@@ -218,6 +218,9 @@ const messages: Record<Locale, Record<string, string>> = {
     txt_log_in: "Log In",
     txt_log_out: "Log Out",
     txt_lock: "Lock",
+    txt_menu: "Menu",
+    txt_settings: "Settings",
+    txt_back: "Back",
     txt_login: "Login",
     txt_login_credentials: "Login Credentials",
     txt_login_failed: "Login failed",
@@ -395,7 +398,7 @@ const messages: Record<Locale, Record<string, string>> = {
 };
 
 const zhCNOverrides: Record<string, string> = {
-  nav_my_vault: '我的保险库',
+  nav_my_vault: '我的密码库',
   nav_sends: 'Send',
   nav_admin_panel: '用户管理',
   nav_account_settings: '账户设置',
@@ -429,7 +432,7 @@ const zhCNOverrides: Record<string, string> = {
   txt_create_account: '创建账户',
   txt_back_to_login: '返回登录',
   txt_unlock: '解锁',
-  txt_unlock_vault: '解锁保险库',
+  txt_unlock_vault: '解锁密码库',
   txt_master_password: '主密码',
   txt_email: '邮箱',
   txt_name: '名称',
@@ -443,7 +446,7 @@ const zhCNOverrides: Record<string, string> = {
   txt_loading: '加载中...',
   txt_loading_nodewarden: '正在加载 NodeWarden...',
   txt_search_sends: '搜索发送...',
-  txt_search_your_secure_vault: '搜索你的保险库...',
+  txt_search_your_secure_vault: '搜索你的密码库...',
   txt_refresh: '刷新',
   txt_sync: '同步',
   txt_sync_vault: '同步',
@@ -752,7 +755,7 @@ const zhCNOverrides: Record<string, string> = {
   txt_use_your_one_time_recovery_code_to_disable_two_step_verification: '使用一次性恢复代码禁用两步验证。',
   txt_user_deleted: '用户已删除',
   txt_user_status_updated: '用户状态已更新',
-  txt_vault_synced: '保险库已同步',
+  txt_vault_synced: '密码库已同步',
   txt_verify: '验证',
   txt_web: '网页',
   txt_windows_desktop: 'Windows 桌面端',
@@ -782,6 +785,9 @@ const zhCNOverrides: Record<string, string> = {
 };
 
 zhCNOverrides.txt_lock = '锁定';
+zhCNOverrides.txt_menu = '菜单';
+zhCNOverrides.txt_settings = '设置';
+zhCNOverrides.txt_back = '返回';
 zhCNOverrides.txt_passkey = 'Passkey';
 zhCNOverrides.txt_passkey_created_at_value = '创建于 {value}';
 zhCNOverrides.txt_attachments = '附件';
@@ -901,8 +907,8 @@ zhCNOverrides.txt_folder_not_found = '文件夹不存在';
 zhCNOverrides.txt_folder_deleted = '文件夹已删除';
 zhCNOverrides.txt_delete_folder_failed = '删除文件夹失败';
 zhCNOverrides.txt_other = '其他';
-zhCNOverrides.txt_vault_key_unavailable = '账户密钥不可用，请先解锁保险库后重试。';
+zhCNOverrides.txt_vault_key_unavailable = '账户密钥不可用，请先解锁密码库后重试。';
-zhCNOverrides.txt_vault_not_ready = '保险库数据尚未就绪';
+zhCNOverrides.txt_vault_not_ready = '密码库数据尚未就绪';
 zhCNOverrides.txt_unsupported_export_format = '不支持的导出格式';
 zhCNOverrides.txt_invalid_encrypted_export = '加密导出文件无效。';
 zhCNOverrides.txt_export_belongs_to_another_account = '此加密导出文件属于另一个账号。';

webapp/src/styles.css

@@ -406,6 +406,23 @@ input[type='file'].input::file-selector-button:hover {
   color: #1e293b;
 }
 
+.brand-name {
+  display: inline;
+}
+
+.mobile-page-title {
+  display: none;
+  min-width: 0;
+  max-width: min(58vw, 240px);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-size: 19px;
+  line-height: 1.2;
+  font-weight: 800;
+  color: #0f172a;
+}
+
 .brand-logo {
   width: 57px;
   height: 57px;
@@ -418,6 +435,18 @@ input[type='file'].input::file-selector-button:hover {
   gap: 8px;
 }
 
+.mobile-tabbar {
+  display: none;
+}
+
+.mobile-sidebar-toggle {
+  display: none;
+}
+
+.mobile-lock-btn {
+  display: none;
+}
+
 .topbar-actions .btn {
   height: 34px;
   border-radius: 10px;
@@ -509,6 +538,17 @@ input[type='file'].input::file-selector-button:hover {
   overflow: auto;
 }
 
+.mobile-sidebar-mask {
+  position: fixed;
+  inset: 0;
+  background: rgba(15, 23, 42, 0.36);
+  z-index: 54;
+}
+
+.mobile-sidebar-head {
+  display: none;
+}
+
 .vault-grid {
   display: grid;
   grid-template-columns: 240px minmax(420px, 46%) minmax(575px, 1fr);
@@ -666,7 +706,7 @@ input[type='file'].input::file-selector-button:hover {
 
 .toolbar .btn.small {
   height: 30px;
-  border-radius: 9px;
+  border-radius: 999px;
   font-size: 12px;
 }
 
@@ -687,6 +727,10 @@ input[type='file'].input::file-selector-button:hover {
   white-space: nowrap;
 }
 
+.list-icon-btn {
+  white-space: nowrap;
+}
+
 .sort-menu-wrap {
   position: relative;
   flex: 0 0 auto;
@@ -697,6 +741,7 @@ input[type='file'].input::file-selector-button:hover {
   width: 36px;
   padding: 0;
   justify-content: center;
+  gap: 0;
 }
 
 .sort-trigger.active {
@@ -854,6 +899,10 @@ input[type='file'].input::file-selector-button:hover {
   min-height: 0;
 }
 
+.mobile-panel-head {
+  display: none;
+}
+
 .card {
   padding: 12px 14px;
   margin-bottom: 8px;
@@ -1054,6 +1103,7 @@ input[type='file'].input::file-selector-button:hover {
   padding: 0;
   border-radius: 999px;
   flex-shrink: 0;
+  gap: 0;
 }
 
 .value-ellipsis {
@@ -1474,6 +1524,10 @@ input[type='file'].input::file-selector-button:hover {
   font-size: 14px;
 }
 
+.table td::before {
+  display: none;
+}
+
 .table th {
   color: #667085;
 }
@@ -1815,3 +1869,599 @@ input[type='file'].input::file-selector-button:hover {
     line-height: 1.4;
   }
 }
+
+@media (max-width: 900px) {
+  .auth-page {
+    padding: 14px;
+    align-items: start;
+  }
+
+  .standalone-shell {
+    width: 100%;
+    max-width: 460px;
+    gap: 10px;
+    padding-top: 12px;
+  }
+
+  .standalone-brand-outside {
+    justify-content: flex-start;
+  }
+
+  .standalone-brand-logo {
+    width: 44px;
+    height: 44px;
+  }
+
+  .standalone-brand-title {
+    font-size: 28px;
+  }
+
+  .standalone-title {
+    font-size: 24px;
+  }
+
+  .auth-card {
+    padding: 20px 16px;
+    border-radius: 18px;
+  }
+
+  .btn.full {
+    height: 48px;
+    font-size: 18px;
+  }
+
+  .app-page {
+    padding: 0;
+    background: #f5f7fb;
+  }
+
+  .app-shell {
+    --mobile-topbar-height: 58px;
+    --mobile-tabbar-height: 70px;
+    height: 100dvh;
+    max-width: none;
+    border: none;
+    border-radius: 0;
+    box-shadow: none;
+  }
+
+  .topbar {
+    height: var(--mobile-topbar-height);
+    padding: 0 12px;
+    position: relative;
+    z-index: 20;
+  }
+
+  .brand {
+    min-width: 0;
+    gap: 10px;
+    font-size: 18px;
+  }
+
+  .brand-logo {
+    width: 34px;
+    height: 34px;
+  }
+
+  .brand-name {
+    display: none;
+  }
+
+  .mobile-page-title {
+    display: inline;
+  }
+
+  .topbar-actions .user-chip,
+  .topbar-actions > .btn:not(.mobile-sidebar-toggle):not(.mobile-lock-btn) {
+    display: none;
+  }
+
+  .mobile-sidebar-toggle,
+  .mobile-lock-btn {
+    display: inline-flex;
+    width: 36px;
+    min-width: 36px;
+    height: 36px;
+    padding: 0;
+    justify-content: center;
+    font-size: 0;
+    gap: 0;
+  }
+
+  .mobile-sidebar-toggle .btn-icon,
+  .mobile-lock-btn .btn-icon {
+    margin: 0;
+  }
+
+  .app-main {
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+  }
+
+  .app-side {
+    display: none;
+  }
+
+  .content {
+    flex: 1;
+    min-height: 0;
+    padding: 10px 10px calc(14px + var(--mobile-tabbar-height) + env(safe-area-inset-bottom));
+    overflow: auto;
+    -webkit-overflow-scrolling: touch;
+  }
+
+  .mobile-tabbar {
+    display: grid;
+    grid-template-columns: repeat(4, minmax(0, 1fr));
+    align-items: center;
+    gap: 6px;
+    min-height: var(--mobile-tabbar-height);
+    padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
+    border-top: 1px solid #d9e0ea;
+    background: rgba(248, 250, 252, 0.96);
+    backdrop-filter: blur(18px);
+  }
+
+  .mobile-tab {
+    display: grid;
+    justify-items: center;
+    gap: 4px;
+    color: #64748b;
+    text-decoration: none;
+    font-size: 11px;
+    font-weight: 700;
+    padding: 6px 4px;
+    border-radius: 12px;
+  }
+
+  .mobile-tab.active {
+    color: #175ddc;
+    background: #e8f0ff;
+  }
+
+  .vault-grid {
+    gap: 10px;
+    padding: 0;
+  }
+
+  .sidebar {
+    display: none;
+  }
+
+  .mobile-sidebar-sheet.open {
+    display: block;
+    position: fixed;
+    left: 10px;
+    right: 10px;
+    top: calc(var(--mobile-topbar-height) + 10px);
+    bottom: auto;
+    max-height: calc(100dvh - 145px);
+    z-index: 55;
+    overflow: auto;
+    border: 1px solid #d8dee8;
+    border-radius: 18px;
+    background: #fff;
+    padding: 12px;
+    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
+  }
+
+  .mobile-sidebar-head {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 10px;
+    margin-bottom: 10px;
+  }
+
+  .mobile-sidebar-title {
+    font-size: 16px;
+    font-weight: 800;
+    color: #0f172a;
+  }
+
+  .mobile-sidebar-close {
+    width: 34px;
+    height: 34px;
+    border: 1px solid #d7dde6;
+    border-radius: 999px;
+    background: #fff;
+    color: #0f172a;
+    display: inline-grid;
+    place-items: center;
+    cursor: pointer;
+    padding: 0;
+  }
+
+  .mobile-sidebar-sheet .sidebar-block {
+    margin: 0;
+    padding: 0;
+    border: none;
+    border-radius: 0;
+    background: transparent;
+    box-shadow: none;
+  }
+
+  .mobile-sidebar-sheet .tree-btn {
+    margin-bottom: 2px;
+  }
+
+  .mobile-sidebar-sheet .folder-row {
+    align-items: stretch;
+    gap: 4px;
+  }
+
+  .mobile-sidebar-sheet .folder-row .tree-btn {
+    min-height: 42px;
+  }
+
+  .mobile-sidebar-sheet .sidebar-title,
+  .mobile-sidebar-sheet .sidebar-title-row {
+    padding-bottom: 6px;
+    margin-bottom: 0;
+  }
+
+  .mobile-sidebar-sheet .tree-btn {
+    padding-left: 8px;
+    padding-right: 8px;
+    border-radius: 10px;
+  }
+
+  .mobile-sidebar-sheet .tree-btn.active {
+    background: #eef4ff;
+  }
+
+  .mobile-sidebar-sheet .folder-delete-btn {
+    width: 28px;
+    height: 42px;
+    border-radius: 8px;
+  }
+
+  .list-col {
+    max-width: none;
+  }
+
+  .list-head {
+    gap: 8px;
+  }
+
+  .list-head .search-input {
+    height: 42px;
+    border-radius: 14px;
+  }
+
+  .list-icon-btn {
+    width: 38px;
+    min-width: 38px;
+    padding: 0;
+    font-size: 0;
+    gap: 0;
+  }
+
+  .list-icon-btn .btn-icon {
+    margin: 0;
+  }
+
+  .toolbar.actions {
+    justify-content: flex-start;
+    flex-wrap: nowrap;
+    overflow-x: auto;
+    padding-bottom: 2px;
+    scrollbar-width: none;
+  }
+
+  .toolbar.actions::-webkit-scrollbar {
+    display: none;
+  }
+
+  .toolbar.actions .btn.small {
+    height: 34px;
+    font-size: 13px;
+  }
+
+  .mobile-fab-wrap {
+    position: fixed;
+    right: 14px;
+    bottom: calc(14px + var(--mobile-tabbar-height) + env(safe-area-inset-bottom));
+    z-index: 45;
+  }
+
+  .mobile-fab-trigger {
+    width: 36px;
+    height: 56px;
+    padding: 0;
+    border-radius: 999px;
+    font-size: 0;
+    gap: 0;
+    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.28);
+  }
+
+  .mobile-fab-trigger .btn-icon {
+    margin: 0;
+    width: 20px;
+    height: 20px;
+  }
+
+  .mobile-fab-wrap .create-menu {
+    left: auto;
+    right: 0;
+    top: auto;
+    bottom: calc(100% + 10px);
+  }
+
+  .list-panel {
+    padding: 6px;
+    border-radius: 16px;
+    overflow: visible;
+  }
+
+  .list-item {
+    padding: 12px;
+    border-radius: 14px;
+  }
+
+  .row-check {
+    width: 18px;
+    height: 18px;
+  }
+
+  .vault-grid.mobile-panel-detail .sidebar,
+  .vault-grid.mobile-panel-detail .list-col,
+  .vault-grid.mobile-panel-edit .sidebar,
+  .vault-grid.mobile-panel-edit .list-col {
+    display: none;
+  }
+
+  .mobile-detail-sheet {
+    display: none;
+  }
+
+  .mobile-detail-sheet.open {
+    display: block;
+    position: fixed;
+    left: 0;
+    right: 0;
+    top: var(--mobile-topbar-height);
+    bottom: calc(var(--mobile-tabbar-height) + env(safe-area-inset-bottom));
+    z-index: 35;
+    overflow: auto;
+    background: #f5f7fb;
+    padding: 10px 10px 18px;
+  }
+
+  .mobile-panel-head {
+    display: flex;
+    align-items: center;
+    margin-bottom: 8px;
+  }
+
+  .mobile-panel-back {
+    min-height: 38px;
+  }
+
+  .detail-col .card,
+  .import-export-panel,
+  .backup-panel,
+  .settings-subcard {
+    border-radius: 16px;
+  }
+
+  .card {
+    padding: 14px 14px;
+  }
+
+  .section-head {
+    align-items: flex-start;
+    gap: 10px;
+    flex-direction: column;
+  }
+
+  .detail-actions {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 10px;
+  }
+
+  .detail-actions .actions {
+    width: 100%;
+  }
+
+  .detail-actions .actions .btn,
+  .detail-delete-btn {
+    width: 100%;
+  }
+
+  .kv-row {
+    grid-template-columns: minmax(64px, 80px) minmax(0, 1fr) auto;
+    align-items: center;
+  }
+
+  .kv-line {
+    flex-direction: row;
+    align-items: center;
+    justify-content: space-between;
+  }
+
+  .kv-actions {
+    width: auto;
+    justify-content: flex-end;
+    flex-wrap: nowrap;
+  }
+
+  .kv-actions .btn.small {
+    width: 34px;
+    min-width: 34px;
+    height: 34px;
+    padding: 0;
+    font-size: 0;
+    gap: 0;
+    border-radius: 999px;
+  }
+
+  .kv-actions .btn.small .btn-icon {
+    margin: 0;
+  }
+
+  .import-export-panels,
+  .settings-twofactor-grid {
+    gap: 10px;
+  }
+
+  .import-export-panel .actions .btn,
+  .backup-panel .actions .btn,
+  .settings-subcard .actions .btn,
+  .section-head .actions .btn {
+    width: 100%;
+  }
+
+  .totp-grid {
+    gap: 10px;
+  }
+
+  .totp-qr {
+    min-height: 180px;
+  }
+
+  .totp-qr svg,
+  .totp-qr img {
+    width: 160px;
+    height: 160px;
+  }
+
+  .invite-toolbar {
+    align-items: stretch;
+  }
+
+  .mobile-settings-card {
+    min-height: calc(100dvh - 145px);
+    display: flex;
+    flex-direction: column;
+    gap: 12px;
+  }
+
+  .mobile-settings-subhead {
+    display: flex;
+    align-items: center;
+  }
+
+  .mobile-settings-back {
+    min-height: 38px;
+  }
+
+  .mobile-settings-links {
+    display: grid;
+    gap: 8px;
+    align-content: start;
+  }
+
+  .mobile-settings-link {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    min-height: 46px;
+    padding: 0 12px;
+    border: 1px solid #dbe2ec;
+    border-radius: 14px;
+    background: #f8fafc;
+    color: #0f172a;
+    text-decoration: none;
+    font-weight: 700;
+  }
+
+  .mobile-settings-link.active {
+    background: #e8f0ff;
+    border-color: #b9cff6;
+    color: #175ddc;
+  }
+
+  .mobile-settings-logout {
+    width: 100%;
+    margin-top: auto;
+  }
+
+  .stack,
+  .import-export-page,
+  .totp-codes-page,
+  .detail-col {
+    min-height: auto;
+  }
+
+  .invite-create-group {
+    align-items: stretch;
+    width: 100%;
+  }
+
+  .input.small {
+    width: 100%;
+  }
+
+  .table,
+  .table tbody,
+  .table tr,
+  .table td {
+    display: block;
+    width: 100%;
+  }
+
+  .table thead {
+    display: none;
+  }
+
+  .table tr {
+    border: 1px solid var(--line);
+    border-radius: 14px;
+    background: #fff;
+    padding: 10px 12px;
+    margin-bottom: 10px;
+  }
+
+  .table td {
+    border-bottom: 1px solid #edf1f6;
+    padding: 10px 0;
+  }
+
+  .table td:last-child {
+    border-bottom: none;
+    padding-bottom: 0;
+  }
+
+  .table td::before {
+    display: block;
+    content: attr(data-label);
+    margin-bottom: 4px;
+    color: #64748b;
+    font-size: 12px;
+    font-weight: 700;
+  }
+
+  .dialog-mask {
+    align-items: center;
+    justify-items: center;
+    padding: 16px;
+  }
+
+  .dialog-card {
+    width: 90%;
+    max-width: 460px;
+    max-height: calc(100dvh - 10px);
+    overflow: auto;
+    border-radius: 22px;
+    padding: 18px 16px calc(18px + env(safe-area-inset-bottom));
+  }
+
+  .dialog-title {
+    font-size: 24px;
+  }
+
+  .dialog-btn {
+    height: 46px;
+    font-size: 16px;
+  }
+
+  .toast-stack {
+    top: 10px;
+    left: 10px;
+    right: 10px;
+    width: auto;
+  }
+}