diff --git a/lib/l10n/arb/app_de.arb b/lib/l10n/arb/app_de.arb
index 3256a06f..fc875778 100644
--- a/lib/l10n/arb/app_de.arb
+++ b/lib/l10n/arb/app_de.arb
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_en.arb b/lib/l10n/arb/app_en.arb
index f7b834cf..3367e863 100644
--- a/lib/l10n/arb/app_en.arb
+++ b/lib/l10n/arb/app_en.arb
@@ -1055,19 +1055,6 @@
   "@sectionTheme": {"description": "Settings section header"},
   "sectionLayout": "Layout",
   "@sectionLayout": {"description": "Settings section header"},
-  "sectionLanguage": "Language",
-  "@sectionLanguage": {"description": "Settings section header for language selection"},
-
-  "appearanceLanguage": "App Language",
-  "@appearanceLanguage": {"description": "Setting title for language selection"},
-  "appearanceLanguageSubtitle": "Choose your preferred language",
-  "@appearanceLanguageSubtitle": {"description": "Subtitle for language setting"},
-  "languageSystem": "System Default",
-  "@languageSystem": {"description": "Use device system language"},
-  "languageEnglish": "English",
-  "@languageEnglish": {"description": "English language option"},
-  "languageIndonesian": "Bahasa Indonesia",
-  "@languageIndonesian": {"description": "Indonesian language option"},
 
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {"description": "Appearance settings description"},
diff --git a/lib/l10n/arb/app_es.arb b/lib/l10n/arb/app_es.arb
index 7bc6362a..ae0bd0b5 100644
--- a/lib/l10n/arb/app_es.arb
+++ b/lib/l10n/arb/app_es.arb
@@ -1,5 +1,5 @@
 {
-  "@@locale": "es",
+  "@@locale": "es-ES",
   "@@last_modified": "2026-01-16",
   "appName": "SpotiFLAC",
   "@appName": {
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_fr.arb b/lib/l10n/arb/app_fr.arb
index d6a279c0..7de05fc5 100644
--- a/lib/l10n/arb/app_fr.arb
+++ b/lib/l10n/arb/app_fr.arb
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_hi.arb b/lib/l10n/arb/app_hi.arb
index b55a6775..048dd1ed 100644
--- a/lib/l10n/arb/app_hi.arb
+++ b/lib/l10n/arb/app_hi.arb
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_ja.arb b/lib/l10n/arb/app_ja.arb
index 74714a12..9e85578e 100644
--- a/lib/l10n/arb/app_ja.arb
+++ b/lib/l10n/arb/app_ja.arb
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_ko.arb b/lib/l10n/arb/app_ko.arb
index 1190fb5c..cc0ccc73 100644
--- a/lib/l10n/arb/app_ko.arb
+++ b/lib/l10n/arb/app_ko.arb
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_nl.arb b/lib/l10n/arb/app_nl.arb
index 3a2fae36..62e26100 100644
--- a/lib/l10n/arb/app_nl.arb
+++ b/lib/l10n/arb/app_nl.arb
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_pt.arb b/lib/l10n/arb/app_pt.arb
index 7a43223b..4c12c5c0 100644
--- a/lib/l10n/arb/app_pt.arb
+++ b/lib/l10n/arb/app_pt.arb
@@ -1,5 +1,5 @@
 {
-  "@@locale": "pt",
+  "@@locale": "pt-PT",
   "@@last_modified": "2026-01-16",
   "appName": "SpotiFLAC",
   "@appName": {
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_ru.arb b/lib/l10n/arb/app_ru.arb
index e30fd182..08c0892d 100644
--- a/lib/l10n/arb/app_ru.arb
+++ b/lib/l10n/arb/app_ru.arb
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"
diff --git a/lib/l10n/arb/app_zh.arb b/lib/l10n/arb/app_zh.arb
index 4908ca97..ffac8eb5 100644
--- a/lib/l10n/arb/app_zh.arb
+++ b/lib/l10n/arb/app_zh.arb
@@ -1,5 +1,5 @@
 {
-  "@@locale": "zh",
+  "@@locale": "zh-TW",
   "@@last_modified": "2026-01-16",
   "appName": "SpotiFLAC",
   "@appName": {
@@ -1849,6 +1849,30 @@
   "@sectionLayout": {
     "description": "Settings section header"
   },
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {
+    "description": "Settings section header for language selection"
+  },
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {
+    "description": "Setting title for language selection"
+  },
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {
+    "description": "Subtitle for language setting"
+  },
+  "languageSystem": "System Default",
+  "@languageSystem": {
+    "description": "Use device system language"
+  },
+  "languageEnglish": "English",
+  "@languageEnglish": {
+    "description": "English language option"
+  },
+  "languageIndonesian": "Bahasa Indonesia",
+  "@languageIndonesian": {
+    "description": "Indonesian language option"
+  },
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {
     "description": "Appearance settings description"