diff --git a/client/src/components/Admin/PermissionsPanel.tsx b/client/src/components/Admin/PermissionsPanel.tsx
index 85a6f2a4..acab4f0c 100644
--- a/client/src/components/Admin/PermissionsPanel.tsx
+++ b/client/src/components/Admin/PermissionsPanel.tsx
@@ -107,10 +107,12 @@ export default function PermissionsPanel(): React.ReactElement {
             <button
               onClick={handleReset}
               disabled={saving}
-              className="flex items-center gap-1.5 px-3 py-1.5 text-sm border border-slate-300 rounded-lg hover:bg-slate-50 disabled:opacity-40 transition-colors"
+              title={t('perm.resetDefaults')}
+              aria-label={t('perm.resetDefaults')}
+              className="flex items-center justify-center gap-1.5 px-0 sm:px-3 py-1.5 text-sm w-8 sm:w-auto border border-slate-300 rounded-lg hover:bg-slate-50 disabled:opacity-40 transition-colors"
             >
               <RotateCcw className="w-3.5 h-3.5" />
-              {t('perm.resetDefaults')}
+              <span className="hidden sm:inline">{t('perm.resetDefaults')}</span>
             </button>
             <button
               onClick={handleSave}
diff --git a/client/src/components/Settings/DisplaySettingsTab.tsx b/client/src/components/Settings/DisplaySettingsTab.tsx
index e84f00e1..0eaec1ca 100644
--- a/client/src/components/Settings/DisplaySettingsTab.tsx
+++ b/client/src/components/Settings/DisplaySettingsTab.tsx
@@ -1,5 +1,5 @@
-import React, { useState, useEffect } from 'react'
-import { Palette, Sun, Moon, Monitor } from 'lucide-react'
+import React, { useState, useEffect, useRef } from 'react'
+import { Palette, Sun, Moon, Monitor, ChevronDown, Check } from 'lucide-react'
 import { SUPPORTED_LANGUAGES, useTranslation } from '../../i18n'
 import { useSettingsStore } from '../../store/settingsStore'
 import { useToast } from '../shared/Toast'
@@ -10,6 +10,17 @@ export default function DisplaySettingsTab(): React.ReactElement {
   const { t } = useTranslation()
   const toast = useToast()
   const [tempUnit, setTempUnit] = useState<string>(settings.temperature_unit || 'celsius')
+  const [langOpen, setLangOpen] = useState(false)
+  const langDropdownRef = useRef<HTMLDivElement | null>(null)
+
+  useEffect(() => {
+    if (!langOpen) return
+    const handler = (e: MouseEvent) => {
+      if (langDropdownRef.current && !langDropdownRef.current.contains(e.target as Node)) setLangOpen(false)
+    }
+    document.addEventListener('mousedown', handler)
+    return () => document.removeEventListener('mousedown', handler)
+  }, [langOpen])
 
   useEffect(() => {
     setTempUnit(settings.temperature_unit || 'celsius')
@@ -46,8 +57,13 @@ export default function DisplaySettingsTab(): React.ReactElement {
                   transition: 'all 0.15s',
                 }}
               >
-                <opt.icon size={16} />
-                {opt.label}
+                <span className="hidden sm:inline-flex"><opt.icon size={16} /></span>
+                {opt.value === 'auto' ? (
+                  <>
+                    <span className="hidden sm:inline">{opt.label}</span>
+                    <span className="sm:hidden">Auto</span>
+                  </>
+                ) : opt.label}
               </button>
             )
           })}
@@ -57,7 +73,8 @@ export default function DisplaySettingsTab(): React.ReactElement {
       {/* Language */}
       <div>
         <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-secondary)' }}>{t('settings.language')}</label>
-        <div className="flex flex-wrap gap-3">
+        {/* Desktop: Button grid */}
+        <div className="hidden sm:flex flex-wrap gap-3">
           {SUPPORTED_LANGUAGES.map(opt => (
             <button
               key={opt.value}
@@ -79,6 +96,60 @@ export default function DisplaySettingsTab(): React.ReactElement {
             </button>
           ))}
         </div>
+        {/* Mobile: Custom dropdown */}
+        <div ref={langDropdownRef} className="sm:hidden" style={{ position: 'relative' }}>
+          {(() => {
+            const current = SUPPORTED_LANGUAGES.find(o => o.value === settings.language) || SUPPORTED_LANGUAGES[0]
+            return (
+              <button
+                type="button"
+                onClick={() => setLangOpen(v => !v)}
+                style={{
+                  width: '100%', display: 'flex', alignItems: 'center', justifyContent: 'space-between',
+                  padding: '10px 14px', borderRadius: 10,
+                  border: '2px solid var(--border-primary)',
+                  background: 'var(--bg-card)', color: 'var(--text-primary)',
+                  fontSize: 14, fontWeight: 500, fontFamily: 'inherit', cursor: 'pointer',
+                }}
+              >
+                <span style={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{current?.label}</span>
+                <ChevronDown size={14} style={{ flexShrink: 0, color: 'var(--text-faint)', transform: langOpen ? 'rotate(180deg)' : 'none', transition: 'transform 0.15s' }} />
+              </button>
+            )
+          })()}
+          {langOpen && (
+            <div style={{
+              position: 'absolute', top: 'calc(100% + 4px)', left: 0, right: 0, zIndex: 50,
+              background: 'var(--bg-card)', border: '1px solid var(--border-primary)', borderRadius: 10,
+              boxShadow: '0 8px 24px rgba(0,0,0,0.15)', padding: 4, maxHeight: 280, overflowY: 'auto',
+            }}>
+              {SUPPORTED_LANGUAGES.map(opt => {
+                const active = settings.language === opt.value
+                return (
+                  <button
+                    key={opt.value}
+                    type="button"
+                    onClick={async () => {
+                      setLangOpen(false)
+                      try { await updateSetting('language', opt.value) }
+                      catch (err: unknown) { toast.error(err instanceof Error ? err.message : t('common.error')) }
+                    }}
+                    style={{
+                      display: 'flex', alignItems: 'center', gap: 8, width: '100%',
+                      padding: '9px 12px', borderRadius: 6, border: 'none', cursor: 'pointer',
+                      background: active ? 'var(--bg-hover)' : 'transparent',
+                      fontFamily: 'inherit', fontSize: 14, color: 'var(--text-primary)',
+                      textAlign: 'left', fontWeight: active ? 600 : 500,
+                    }}
+                  >
+                    <span style={{ flex: 1 }}>{opt.label}</span>
+                    {active && <Check size={14} strokeWidth={2.5} color="var(--accent)" />}
+                  </button>
+                )
+              })}
+            </div>
+          )}
+        </div>
       </div>
 
       {/* Temperature */}
diff --git a/client/src/i18n/translations/de.ts b/client/src/i18n/translations/de.ts
index eb7c9b2b..f14e17f6 100644
--- a/client/src/i18n/translations/de.ts
+++ b/client/src/i18n/translations/de.ts
@@ -148,7 +148,7 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'settings.subtitle': 'Konfigurieren Sie Ihre persönlichen Einstellungen',
   'settings.tabs.display': 'Anzeige',
   'settings.tabs.map': 'Karte',
-  'settings.tabs.notifications': 'Benachrichtigungen',
+  'settings.tabs.notifications': 'Mitteilungen',
   'settings.tabs.integrations': 'Integrationen',
   'settings.tabs.account': 'Konto',
   'settings.tabs.offline': 'Offline',
@@ -182,7 +182,7 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'settings.bookingLabels': 'Orts-Labels auf Buchungsrouten',
   'settings.bookingLabelsHint': 'Zeigt Bahnhofs-/Flughafennamen auf der Karte. Wenn aus, wird nur das Icon angezeigt.',
   'settings.blurBookingCodes': 'Buchungscodes verbergen',
-  'settings.notifications': 'Benachrichtigungen',
+  'settings.notifications': 'Mitteilungen',
   'settings.notifyTripInvite': 'Trip-Einladungen',
   'settings.notifyBookingChange': 'Buchungsänderungen',
   'settings.notifyTripReminder': 'Trip-Erinnerungen',
diff --git a/client/src/pages/AdminPage.tsx b/client/src/pages/AdminPage.tsx
index 9b976734..31f99000 100644
--- a/client/src/pages/AdminPage.tsx
+++ b/client/src/pages/AdminPage.tsx
@@ -903,7 +903,7 @@ export default function AdminPage(): React.ReactElement {
                       </div>
                       <button
                         onClick={() => handleToggleAuthSetting('oidc_registration', !oidcRegistration, setOidcRegistration)}
-                        className="relative inline-flex h-6 w-11 items-center rounded-full transition-colors"
+                        className="relative inline-flex h-6 w-11 flex-shrink-0 items-center rounded-full transition-colors"
                         style={{ background: oidcRegistration ? 'var(--text-primary)' : 'var(--border-primary)' }}
                       >
                         <span
@@ -930,7 +930,7 @@ export default function AdminPage(): React.ReactElement {
                     <button
                       type="button"
                       onClick={() => handleToggleRequireMfa(!requireMfa)}
-                      className="relative inline-flex h-6 w-11 items-center rounded-full transition-colors"
+                      className="relative inline-flex h-6 w-11 flex-shrink-0 items-center rounded-full transition-colors"
                       style={{ background: requireMfa ? 'var(--text-primary)' : 'var(--border-primary)' }}
                     >
                       <span
@@ -1036,7 +1036,7 @@ export default function AdminPage(): React.ReactElement {
                   </div>
 
                   {/* Place Photos Toggle */}
-                  <div className="flex items-center justify-between py-3 border-t border-slate-100">
+                  <div className="flex items-center justify-between gap-4 py-3 border-t border-slate-100">
                     <div>
                       <p className="text-sm font-medium text-slate-700">{t('admin.placesPhotos.title')}</p>
                       <p className="text-xs text-slate-400 mt-0.5">{t('admin.placesPhotos.subtitle')}</p>
@@ -1048,7 +1048,7 @@ export default function AdminPage(): React.ReactElement {
                         setPlacesPhotosEnabled(next)
                         try { await adminApi.updatePlacesPhotos(next) } catch { setPlacesPhotosEnabledState(!next); setPlacesPhotosEnabled(!next) }
                       }}
-                      className="relative inline-flex h-6 w-11 items-center rounded-full transition-colors"
+                      className="relative inline-flex h-6 w-11 flex-shrink-0 items-center rounded-full transition-colors"
                       style={{ background: placesPhotosEnabled ? 'var(--text-primary)' : 'var(--border-primary)' }}
                     >
                       <span className="absolute left-0.5 h-5 w-5 rounded-full bg-white transition-transform duration-200" style={{ transform: placesPhotosEnabled ? 'translateX(20px)' : 'translateX(0)' }} />
@@ -1056,7 +1056,7 @@ export default function AdminPage(): React.ReactElement {
                   </div>
 
                   {/* Place Autocomplete Toggle */}
-                  <div className="flex items-center justify-between py-3 border-t border-slate-100">
+                  <div className="flex items-center justify-between gap-4 py-3 border-t border-slate-100">
                     <div>
                       <p className="text-sm font-medium text-slate-700">{t('admin.placesAutocomplete.title')}</p>
                       <p className="text-xs text-slate-400 mt-0.5">{t('admin.placesAutocomplete.subtitle')}</p>
@@ -1068,7 +1068,7 @@ export default function AdminPage(): React.ReactElement {
                         setPlacesAutocompleteEnabled(next)
                         try { await adminApi.updatePlacesAutocomplete(next) } catch { setPlacesAutocompleteEnabledState(!next); setPlacesAutocompleteEnabled(!next) }
                       }}
-                      className="relative inline-flex h-6 w-11 items-center rounded-full transition-colors"
+                      className="relative inline-flex h-6 w-11 flex-shrink-0 items-center rounded-full transition-colors"
                       style={{ background: placesAutocompleteEnabled ? 'var(--text-primary)' : 'var(--border-primary)' }}
                     >
                       <span className="absolute left-0.5 h-5 w-5 rounded-full bg-white transition-transform duration-200" style={{ transform: placesAutocompleteEnabled ? 'translateX(20px)' : 'translateX(0)' }} />
@@ -1076,7 +1076,7 @@ export default function AdminPage(): React.ReactElement {
                   </div>
 
                   {/* Place Details Toggle */}
-                  <div className="flex items-center justify-between py-3 border-t border-slate-100">
+                  <div className="flex items-center justify-between gap-4 py-3 border-t border-slate-100">
                     <div>
                       <p className="text-sm font-medium text-slate-700">{t('admin.placesDetails.title')}</p>
                       <p className="text-xs text-slate-400 mt-0.5">{t('admin.placesDetails.subtitle')}</p>
@@ -1088,7 +1088,7 @@ export default function AdminPage(): React.ReactElement {
                         setPlacesDetailsEnabled(next)
                         try { await adminApi.updatePlacesDetails(next) } catch { setPlacesDetailsEnabledState(!next); setPlacesDetailsEnabled(!next) }
                       }}
-                      className="relative inline-flex h-6 w-11 items-center rounded-full transition-colors"
+                      className="relative inline-flex h-6 w-11 flex-shrink-0 items-center rounded-full transition-colors"
                       style={{ background: placesDetailsEnabled ? 'var(--text-primary)' : 'var(--border-primary)' }}
                     >
                       <span className="absolute left-0.5 h-5 w-5 rounded-full bg-white transition-transform duration-200" style={{ transform: placesDetailsEnabled ? 'translateX(20px)' : 'translateX(0)' }} />
@@ -1328,7 +1328,7 @@ export default function AdminPage(): React.ReactElement {
                         const newVal = smtpValues.smtp_skip_tls_verify === 'true' ? 'false' : 'true'
                         setSmtpValues(prev => ({ ...prev, smtp_skip_tls_verify: newVal }))
                       }}
-                        className="relative inline-flex h-6 w-11 items-center rounded-full transition-colors"
+                        className="relative inline-flex h-6 w-11 flex-shrink-0 items-center rounded-full transition-colors"
                         style={{ background: smtpValues.smtp_skip_tls_verify === 'true' ? 'var(--text-primary)' : 'var(--border-primary)' }}>
                         <span className="absolute left-0.5 h-5 w-5 rounded-full bg-white transition-transform duration-200"
                           style={{ transform: smtpValues.smtp_skip_tls_verify === 'true' ? 'translateX(20px)' : 'translateX(0)' }} />