diff --git a/.github/forge-posts/v1.1.0.md b/.github/forge-posts/v1.1.0.md
new file mode 100644
index 0000000..533464b
--- /dev/null
+++ b/.github/forge-posts/v1.1.0.md
@@ -0,0 +1,12 @@
+---
+subtitle: "Theme Foundation"
+versionsnatur: "Major-UI-Cycle"
+---
+- Theme-Engine mit fünf Built-In-Themes: Hellion Arctic (Default), Chat 2 Klassik, Event Horizon, Moonlit Bloom, Mint Grove
+- Settings öffnet jetzt eine Card-Grid-Übersicht — Klick auf eine Card führt in den Detail-View, Breadcrumb und ESC zurück zur Übersicht
+- Themes-Tab mit Mini-Mockup pro Theme, Live-Switch beim Klick
+- Eigene Themes als JSON in `pluginConfigs/HellionChat/themes/` — Beispiel-Vorlage wird beim ersten Start automatisch abgelegt
+- Optional pro Theme eigene Chat-Channel-Farben mit Übernehmen/Behalten-Banner — niemals automatisch überschrieben
+- Plugin-Icon zum Hellion-Forge-Hammer gewechselt
+- Migration v13 → v14: alle User landen auf Hellion Arctic. Wer den Upstream-Look will, wählt Chat 2 Klassik in Settings → Themes
+- Anleitung zum Schreiben eigener Themes: `docs/THEME-AUTHORING.md`
diff --git a/HellionChat/Configuration.cs b/HellionChat/Configuration.cs
index fbe7fdc..da3b4d6 100755
--- a/HellionChat/Configuration.cs
+++ b/HellionChat/Configuration.cs
@@ -34,10 +34,23 @@ public class ConfigKeyBind
 [Serializable]
 public class Configuration : IPluginConfiguration
 {
-    private const int LatestVersion = 13;
+    private const int LatestVersion = 14;
 
     public int Version { get; set; } = LatestVersion;
 
+    // v1.1.0 — Theme-Engine. Slug-basiert; ThemeRegistry liefert das Objekt.
+    public string Theme = "hellion-arctic";
+
+    // v1.1.0 — Globale Window-Opacity, theme-übergreifend. Migration aus
+    // HellionThemeWindowOpacity beim Bump v13 → v14.
+    public float WindowOpacity = 0.85f;
+
+    // v1.1.0 — Felder für künftige UI-Toggles (v1.2.0 / v1.3.0). Werden
+    // vorab angelegt, damit später keine Migration nötig ist.
+    public bool ReduceMotion;
+    public bool UseCompactDensity;
+    public bool ShowThemeQuickPicker;
+
     // Hellion Chat — Privacy filter (DSGVO Art. 25 Privacy by Default).
     // Master-switch defaults to true; set false to restore upstream behavior.
     public bool PrivacyFilterEnabled = true;
@@ -70,12 +83,14 @@ public class Configuration : IPluginConfiguration
     // Hellion Chat global ImGui theme — applied to every plugin window in
     // Plugin.Draw. Default ON; users who prefer the upstream Dalamud look
     // can flip this off in the Privacy tab.
+    [Obsolete("Replaced by Theme slug + WindowOpacity in v14")]
     public bool HellionThemeEnabled = true;
 
     // Window background opacity, 0.5–1.0. Lower values make the plugin
     // panes more glass-like so the game shines through. Default 0.5
     // matches the maintainer's daily-driver preference; users who want
     // a less translucent look bump it up in Aussehen → Theme.
+    [Obsolete("Replaced by WindowOpacity in v14")]
     public float HellionThemeWindowOpacity = 0.5f;
 
     // Use the bundled Exo 2 font (OFL-1.1) for the regular plugin font
@@ -321,10 +336,19 @@ public class Configuration : IPluginConfiguration
         RetentionLastRunAt = other.RetentionLastRunAt;
 
         FirstRunCompleted = other.FirstRunCompleted;
+#pragma warning disable CS0612, CS0618 // Obsolete-Felder bleiben bis v1.2.0 als JSON-Safety-Net erhalten
         HellionThemeEnabled = other.HellionThemeEnabled;
         HellionThemeWindowOpacity = other.HellionThemeWindowOpacity;
+#pragma warning restore CS0612, CS0618
         UseHellionFont = other.UseHellionFont;
 
+        // v1.1.0 theme engine fields
+        Theme = other.Theme;
+        WindowOpacity = other.WindowOpacity;
+        ReduceMotion = other.ReduceMotion;
+        UseCompactDensity = other.UseCompactDensity;
+        ShowThemeQuickPicker = other.ShowThemeQuickPicker;
+
         EnableAutoTellTabs = other.EnableAutoTellTabs;
         AutoTellTabsLimit = other.AutoTellTabsLimit;
         AutoTellTabsCompactDisplay = other.AutoTellTabsCompactDisplay;
diff --git a/HellionChat/HellionChat.csproj b/HellionChat/HellionChat.csproj
index 0d048e8..1771783 100644
--- a/HellionChat/HellionChat.csproj
+++ b/HellionChat/HellionChat.csproj
@@ -4,7 +4,7 @@
              0.1.0 is our bootstrap release; the underlying Chat 2 base is
              called out in the yaml changelog so users can see what it
              derives from. -->
-        <Version>1.0.3</Version>
+        <Version>1.1.0</Version>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <!-- Honor packages.lock.json on restore so floating version ranges
@@ -75,6 +75,9 @@
         <EmbeddedResource Include="Resources\HellionFont-OFL.txt">
             <LogicalName>HellionFont-OFL.txt</LogicalName>
         </EmbeddedResource>
+        <EmbeddedResource Include="Themes\Builtin\example-theme.json">
+            <LogicalName>HellionChat.Themes.Builtin.example-theme.json</LogicalName>
+        </EmbeddedResource>
     </ItemGroup>
 
 
diff --git a/HellionChat/HellionChat.yaml b/HellionChat/HellionChat.yaml
index ba4e13f..2a00b2a 100755
--- a/HellionChat/HellionChat.yaml
+++ b/HellionChat/HellionChat.yaml
@@ -31,6 +31,11 @@ description: |-
   - Independent plugin state — own config file and database directory,
     so Hellion Chat does not share state with upstream Chat 2
 
+  v1.1.0 — Theme engine with five built-in themes (Hellion Arctic,
+  Chat 2 Klassik, Event Horizon, Moonlit Bloom, Mint Grove) plus
+  JSON-based custom-theme authoring. Settings rebuilt around a card
+  grid with section detail views. See docs/THEME-AUTHORING.md.
+
   Based on Chat 2 by Infi and Anna, licensed under EUPL-1.2.
 
   Modding & support: join the Hellion Forge Discord at
@@ -41,7 +46,8 @@ accepts_feedback: true
 icon_url: https://raw.githubusercontent.com/JonKazama-Hellion/HellionChat/main/HellionChat/images/icon.png
 image_urls:
   - https://raw.githubusercontent.com/JonKazama-Hellion/HellionChat/main/HellionChat/images/chatWindow.png
-  - https://raw.githubusercontent.com/JonKazama-Hellion/HellionChat/main/HellionChat/images/withSimpleTweaks.png
+  - https://raw.githubusercontent.com/JonKazama-Hellion/HellionChat/main/HellionChat/images/settingsOverview.png
+  - https://raw.githubusercontent.com/JonKazama-Hellion/HellionChat/main/HellionChat/images/themesPicker.png
 tags:
   - Social
   - UI
@@ -49,6 +55,64 @@ tags:
   - Replacement
   - Privacy
 changelog: |-
+  **Hellion Chat 1.1.0 — Theme Foundation**
+
+  First major UI cycle after the standalone v1.0.0 cut. Theme engine,
+  five built-in themes, customisable JSON themes, modernised settings
+  layout.
+
+  New themes (Settings → Themes):
+
+  - **Hellion Arctic** — the brand default, Arctic Cyan + Ember Glow
+    on industrial slate.
+  - **Chat 2 Klassik** — Steel Blue on neutral grey, eckige Kanten.
+    The upstream Chat 2 look on the new engine.
+  - **Event Horizon** — Cosmic Purple on near-black. Deep-space mood.
+  - **Moonlit Bloom** — Bloom Magenta + Soft Sage on deep-violet
+    night.
+  - **Mint Grove** — Mint Green + Honey Amber on deep forest. First
+    member of the Grove family.
+
+  Theme engine highlights:
+
+  - Slug-based selection in Settings → Themes with mini-mockup
+    previews per theme.
+  - Click a theme card and the whole plugin (chat, settings,
+    pop-outs, viewer) repaints instantly.
+  - Custom themes via JSON in pluginConfigs/HellionChat/themes/.
+    Example template seeded on first launch.
+  - Optional per-theme chat-channel colours. When a theme proposes
+    its own chat colours and yours differ, a dezent banner offers
+    Apply / Keep — never auto-overwriting.
+  - Migration v13 → v14: existing users land on Hellion Arctic. Pick
+    Chat 2 Klassik to keep the upstream look.
+
+  Settings layout:
+
+  - New card-grid overview on Settings open. Click a card to drill
+    into the section.
+  - Breadcrumb back to overview, ESC also returns.
+  - Detail view drops the redundant tab list — section content uses
+    the full width.
+
+  Branding:
+
+  - Plugin icon swapped from the ChatTwo derivative to the Hellion
+    Forge hammer.
+  - New docs/THEME-AUTHORING.md walks you through writing your own
+    themes with the Forge logo on top.
+
+  Technical:
+
+  - HellionStyle.PushGlobal is now theme-driven. Configuration.
+    HellionThemeEnabled is deprecated and will be removed in v1.2.0.
+  - New ThemeRegistry singleton with LastWriteTime-cached custom-
+    theme loader.
+  - 51 local unit tests cover the data model, registry, JSON round-
+    trip and built-in sanity checks.
+
+  Based on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).
+
   **Hellion Chat 1.0.3 — Polish patch**
 
   - New: optionally hide chat (and every other plugin window) while the
diff --git a/HellionChat/Plugin.cs b/HellionChat/Plugin.cs
index 992600a..6cb47f5 100755
--- a/HellionChat/Plugin.cs
+++ b/HellionChat/Plugin.cs
@@ -63,6 +63,7 @@ public sealed class Plugin : IDalamudPlugin
     internal ExtraChat ExtraChat { get; }
     internal TypingIpc TypingIpc { get; }
     internal FontManager FontManager { get; }
+    internal Themes.ThemeRegistry ThemeRegistry { get; private set; } = null!;
 
     internal int DeferredSaveFrames = -1;
 
@@ -237,6 +238,27 @@ public sealed class Plugin : IDalamudPlugin
                 });
             }
 
+            // Hellion Chat v13 → v14 — theme-engine migration. Alle User landen
+            // auf "hellion-arctic" als neues Default-Theme; die alte
+            // HellionThemeEnabled-Flag wird deprecated und nur noch ein Release
+            // als Safety-Net im JSON behalten. Window-Opacity wandert von
+            // HellionThemeWindowOpacity in das neue WindowOpacity-Feld.
+            if (Config.Version < 14)
+            {
+                Config.Theme = "hellion-arctic";
+                #pragma warning disable CS0612, CS0618 // Obsolete: HellionThemeWindowOpacity bleibt readable bis v1.2.0
+                Config.WindowOpacity = Config.HellionThemeWindowOpacity;
+                #pragma warning restore CS0612, CS0618
+                Config.ReduceMotion = false;
+                Config.UseCompactDensity = false;
+                Config.ShowThemeQuickPicker = false;
+                Config.Version = 14;
+                SaveConfig();
+                Log.Information(
+                    "Migrated config v13 → v14: theme engine introduced, all users land on hellion-arctic; " +
+                    "pick chat2-classic in Settings → Themes for the upstream look");
+            }
+
             // Hellion v1.0.0 default tab layout. Five thematically separated
             // tabs: General catches the immediate-surroundings public chat
             // (Say/Yell/Shout) only; System absorbs the rest of the technical
@@ -266,6 +288,14 @@ public sealed class Plugin : IDalamudPlugin
             ExtraChat = new ExtraChat();
             FontManager = new FontManager();
 
+            // v1.1.0 — Theme-Engine init. Custom-Themes liegen in
+            // pluginConfigs/HellionChat/themes/, lazy geladen beim ersten Get.
+            var customThemesDir = Path.Combine(Interface.ConfigDirectory.FullName, "themes");
+            Directory.CreateDirectory(customThemesDir);
+            SeedExampleThemeIfEmpty(customThemesDir);
+            ThemeRegistry = new Themes.ThemeRegistry(customThemesDir);
+            ThemeRegistry.Switch(Config.Theme);
+
             MessageManager = new MessageManager(this); // Does it require UI?
 
             // Hellion Chat — Auto-Tell-Tabs service. Subscribes to the
@@ -559,13 +589,10 @@ public sealed class Plugin : IDalamudPlugin
 
     private void Draw()
     {
-        // Hellion theme is pushed once per frame here so every plugin window
-        // (chat log, settings, viewers, wizard, file dialog) renders with
-        // the same palette. Skipping the push leaves the upstream Dalamud
-        // look untouched for users who flipped the toggle off.
-        using IDisposable? _style = Config.HellionThemeEnabled
-            ? HellionStyle.PushGlobal(Config.HellionThemeWindowOpacity)
-            : null;
+        // Theme-Engine ist ab v14 immer aktiv; Klassik ist jetzt ein eigenes
+        // Theme statt einem deaktivierten Hellion-Theme. Active wird einmal
+        // pro Frame aus der Registry gelesen.
+        using IDisposable _style = HellionStyle.PushGlobal(ThemeRegistry.Active, Config.WindowOpacity);
 
         ChatLogWindow.BeginFrame();
 
@@ -650,4 +677,36 @@ public sealed class Plugin : IDalamudPlugin
     public static bool InBattle => Condition[ConditionFlag.InCombat];
     public static bool GposeActive => Condition[ConditionFlag.WatchingCutscene];
     public static bool CutsceneActive => Condition[ConditionFlag.OccupiedInCutSceneEvent] || Condition[ConditionFlag.WatchingCutscene78];
+
+    // v1.1.0 — wenn der themes/-Ordner leer ist, schreiben wir die embedded
+    // example-theme.json als Vorlage rein. Bestehende User-Customs werden
+    // nicht angefasst (existing JSONs lassen den Block überspringen).
+    private static void SeedExampleThemeIfEmpty(string dir)
+    {
+        if (Directory.EnumerateFiles(dir, "*.json").Any())
+            return;
+
+        var examplePath = Path.Combine(dir, "example-theme.json");
+        var resourceStream = typeof(Plugin).Assembly.GetManifestResourceStream("HellionChat.Themes.Builtin.example-theme.json");
+        if (resourceStream is null)
+        {
+            Log.Warning("Themes example template not found in assembly resources; skipping seed.");
+            return;
+        }
+
+        try
+        {
+            using var fileStream = File.Create(examplePath);
+            resourceStream.CopyTo(fileStream);
+            Log.Information($"Seeded example-theme.json into {dir}");
+        }
+        catch (IOException ex)
+        {
+            Log.Warning(ex, "Failed to seed example-theme.json; user can create custom themes manually.");
+        }
+        finally
+        {
+            resourceStream.Dispose();
+        }
+    }
 }
diff --git a/HellionChat/Resources/HellionStrings.Designer.cs b/HellionChat/Resources/HellionStrings.Designer.cs
index fb80313..1402a1d 100644
--- a/HellionChat/Resources/HellionStrings.Designer.cs
+++ b/HellionChat/Resources/HellionStrings.Designer.cs
@@ -203,6 +203,37 @@ internal class HellionStrings
     internal static string Settings_Tab_Database => Get(nameof(Settings_Tab_Database));
     internal static string Settings_Tab_Information => Get(nameof(Settings_Tab_Information));
 
+    // v1.1.0 — Settings card-grid overview
+    internal static string Settings_Card_General_Title => Get(nameof(Settings_Card_General_Title));
+    internal static string Settings_Card_General_Subtext => Get(nameof(Settings_Card_General_Subtext));
+    internal static string Settings_Card_Appearance_Title => Get(nameof(Settings_Card_Appearance_Title));
+    internal static string Settings_Card_Appearance_Subtext => Get(nameof(Settings_Card_Appearance_Subtext));
+    internal static string Settings_Card_Themes_Title => Get(nameof(Settings_Card_Themes_Title));
+    internal static string Settings_Card_Themes_Subtext => Get(nameof(Settings_Card_Themes_Subtext));
+    internal static string Settings_Card_Window_Title => Get(nameof(Settings_Card_Window_Title));
+    internal static string Settings_Card_Window_Subtext => Get(nameof(Settings_Card_Window_Subtext));
+    internal static string Settings_Card_Chat_Title => Get(nameof(Settings_Card_Chat_Title));
+    internal static string Settings_Card_Chat_Subtext => Get(nameof(Settings_Card_Chat_Subtext));
+    internal static string Settings_Card_Tabs_Title => Get(nameof(Settings_Card_Tabs_Title));
+    internal static string Settings_Card_Tabs_Subtext => Get(nameof(Settings_Card_Tabs_Subtext));
+    internal static string Settings_Card_Privacy_Title => Get(nameof(Settings_Card_Privacy_Title));
+    internal static string Settings_Card_Privacy_Subtext => Get(nameof(Settings_Card_Privacy_Subtext));
+    internal static string Settings_Card_Database_Title => Get(nameof(Settings_Card_Database_Title));
+    internal static string Settings_Card_Database_Subtext => Get(nameof(Settings_Card_Database_Subtext));
+    internal static string Settings_Card_Information_Title => Get(nameof(Settings_Card_Information_Title));
+    internal static string Settings_Card_Information_Subtext => Get(nameof(Settings_Card_Information_Subtext));
+
+    // v1.1.0 — Themes-Settings-Tab
+    internal static string Settings_Tab_Themes => Get(nameof(Settings_Tab_Themes));
+    internal static string Settings_Themes_Active => Get(nameof(Settings_Themes_Active));
+    internal static string Settings_Themes_BuiltIns => Get(nameof(Settings_Themes_BuiltIns));
+    internal static string Settings_Themes_Custom => Get(nameof(Settings_Themes_Custom));
+    internal static string Settings_Themes_OpenFolder => Get(nameof(Settings_Themes_OpenFolder));
+    internal static string Settings_Themes_ExportActive => Get(nameof(Settings_Themes_ExportActive));
+    internal static string Settings_Themes_ApplyChatColors_Hint => Get(nameof(Settings_Themes_ApplyChatColors_Hint));
+    internal static string Settings_Themes_ApplyChatColors_Apply => Get(nameof(Settings_Themes_ApplyChatColors_Apply));
+    internal static string Settings_Themes_ApplyChatColors_Keep => Get(nameof(Settings_Themes_ApplyChatColors_Keep));
+
     // Hellion Chat — General-Tab section headings
     internal static string Settings_General_Input_Heading => Get(nameof(Settings_General_Input_Heading));
     internal static string Settings_General_Audio_Heading => Get(nameof(Settings_General_Audio_Heading));
diff --git a/HellionChat/Resources/HellionStrings.de.resx b/HellionChat/Resources/HellionStrings.de.resx
index 9f88ea0..9b9c9bf 100644
--- a/HellionChat/Resources/HellionStrings.de.resx
+++ b/HellionChat/Resources/HellionStrings.de.resx
@@ -624,4 +624,85 @@
   <data name="ChatTwoConflictAction" xml:space="preserve">
     <value>Chat 2 in /xlplugins deaktivieren, danach Hellion Chat erneut aktivieren.</value>
   </data>
+  <data name="Settings_Card_General_Title" xml:space="preserve">
+    <value>Allgemein</value>
+  </data>
+  <data name="Settings_Card_General_Subtext" xml:space="preserve">
+    <value>Sprache und grundlegendes Verhalten</value>
+  </data>
+  <data name="Settings_Card_Appearance_Title" xml:space="preserve">
+    <value>Erscheinungsbild</value>
+  </data>
+  <data name="Settings_Card_Appearance_Subtext" xml:space="preserve">
+    <value>Fensterdeckkraft, Schriften, Bewegung</value>
+  </data>
+  <data name="Settings_Card_Themes_Title" xml:space="preserve">
+    <value>Themes</value>
+  </data>
+  <data name="Settings_Card_Themes_Subtext" xml:space="preserve">
+    <value>Theme wählen oder eigenes importieren</value>
+  </data>
+  <data name="Settings_Card_Window_Title" xml:space="preserve">
+    <value>Fenster</value>
+  </data>
+  <data name="Settings_Card_Window_Subtext" xml:space="preserve">
+    <value>Fensterposition, Rahmen, Hide-Zustände</value>
+  </data>
+  <data name="Settings_Card_Chat_Title" xml:space="preserve">
+    <value>Chat</value>
+  </data>
+  <data name="Settings_Card_Chat_Subtext" xml:space="preserve">
+    <value>Chat-Verhalten, Emotes, Auto-Tells</value>
+  </data>
+  <data name="Settings_Card_Tabs_Title" xml:space="preserve">
+    <value>Tabs</value>
+  </data>
+  <data name="Settings_Card_Tabs_Subtext" xml:space="preserve">
+    <value>Tab-Layout, Kanäle, eigene Tabs</value>
+  </data>
+  <data name="Settings_Card_Privacy_Title" xml:space="preserve">
+    <value>Datenschutz</value>
+  </data>
+  <data name="Settings_Card_Privacy_Subtext" xml:space="preserve">
+    <value>Filter, Aufbewahrung, Bereinigung, Export</value>
+  </data>
+  <data name="Settings_Card_Database_Title" xml:space="preserve">
+    <value>Datenbank</value>
+  </data>
+  <data name="Settings_Card_Database_Subtext" xml:space="preserve">
+    <value>Speicher, Migration, alte Bereinigung</value>
+  </data>
+  <data name="Settings_Card_Information_Title" xml:space="preserve">
+    <value>Information</value>
+  </data>
+  <data name="Settings_Card_Information_Subtext" xml:space="preserve">
+    <value>Über, Mitwirkende, Support</value>
+  </data>
+  <data name="Settings_Tab_Themes" xml:space="preserve">
+    <value>Themes</value>
+  </data>
+  <data name="Settings_Themes_Active" xml:space="preserve">
+    <value>Aktiv: {0}</value>
+  </data>
+  <data name="Settings_Themes_BuiltIns" xml:space="preserve">
+    <value>Eingebaute Themes</value>
+  </data>
+  <data name="Settings_Themes_Custom" xml:space="preserve">
+    <value>Eigene Themes</value>
+  </data>
+  <data name="Settings_Themes_OpenFolder" xml:space="preserve">
+    <value>Themes-Ordner öffnen</value>
+  </data>
+  <data name="Settings_Themes_ExportActive" xml:space="preserve">
+    <value>Aktives exportieren...</value>
+  </data>
+  <data name="Settings_Themes_ApplyChatColors_Hint" xml:space="preserve">
+    <value>Dieses Theme schlägt eigene Channel-Farben vor.</value>
+  </data>
+  <data name="Settings_Themes_ApplyChatColors_Apply" xml:space="preserve">
+    <value>Übernehmen</value>
+  </data>
+  <data name="Settings_Themes_ApplyChatColors_Keep" xml:space="preserve">
+    <value>Behalten</value>
+  </data>
 </root>
diff --git a/HellionChat/Resources/HellionStrings.resx b/HellionChat/Resources/HellionStrings.resx
index aefa6c6..edba1d7 100644
--- a/HellionChat/Resources/HellionStrings.resx
+++ b/HellionChat/Resources/HellionStrings.resx
@@ -624,4 +624,85 @@
   <data name="ChatTwoConflictAction" xml:space="preserve">
     <value>Disable Chat 2 in /xlplugins, then re-enable Hellion Chat.</value>
   </data>
+  <data name="Settings_Card_General_Title" xml:space="preserve">
+    <value>General</value>
+  </data>
+  <data name="Settings_Card_General_Subtext" xml:space="preserve">
+    <value>Language and basic behaviour</value>
+  </data>
+  <data name="Settings_Card_Appearance_Title" xml:space="preserve">
+    <value>Appearance</value>
+  </data>
+  <data name="Settings_Card_Appearance_Subtext" xml:space="preserve">
+    <value>Window opacity, fonts, motion</value>
+  </data>
+  <data name="Settings_Card_Themes_Title" xml:space="preserve">
+    <value>Themes</value>
+  </data>
+  <data name="Settings_Card_Themes_Subtext" xml:space="preserve">
+    <value>Choose a theme or import your own</value>
+  </data>
+  <data name="Settings_Card_Window_Title" xml:space="preserve">
+    <value>Window</value>
+  </data>
+  <data name="Settings_Card_Window_Subtext" xml:space="preserve">
+    <value>Window position, frame, hide states</value>
+  </data>
+  <data name="Settings_Card_Chat_Title" xml:space="preserve">
+    <value>Chat</value>
+  </data>
+  <data name="Settings_Card_Chat_Subtext" xml:space="preserve">
+    <value>Chat behaviour, emotes, auto-tells</value>
+  </data>
+  <data name="Settings_Card_Tabs_Title" xml:space="preserve">
+    <value>Tabs</value>
+  </data>
+  <data name="Settings_Card_Tabs_Subtext" xml:space="preserve">
+    <value>Tab layout, channels, custom tabs</value>
+  </data>
+  <data name="Settings_Card_Privacy_Title" xml:space="preserve">
+    <value>Privacy</value>
+  </data>
+  <data name="Settings_Card_Privacy_Subtext" xml:space="preserve">
+    <value>Filter, retention, cleanup, export</value>
+  </data>
+  <data name="Settings_Card_Database_Title" xml:space="preserve">
+    <value>Database</value>
+  </data>
+  <data name="Settings_Card_Database_Subtext" xml:space="preserve">
+    <value>Storage, migration, legacy cleanup</value>
+  </data>
+  <data name="Settings_Card_Information_Title" xml:space="preserve">
+    <value>Information</value>
+  </data>
+  <data name="Settings_Card_Information_Subtext" xml:space="preserve">
+    <value>About, credits, support</value>
+  </data>
+  <data name="Settings_Tab_Themes" xml:space="preserve">
+    <value>Themes</value>
+  </data>
+  <data name="Settings_Themes_Active" xml:space="preserve">
+    <value>Active: {0}</value>
+  </data>
+  <data name="Settings_Themes_BuiltIns" xml:space="preserve">
+    <value>Built-in themes</value>
+  </data>
+  <data name="Settings_Themes_Custom" xml:space="preserve">
+    <value>Custom themes</value>
+  </data>
+  <data name="Settings_Themes_OpenFolder" xml:space="preserve">
+    <value>Open themes folder</value>
+  </data>
+  <data name="Settings_Themes_ExportActive" xml:space="preserve">
+    <value>Export active...</value>
+  </data>
+  <data name="Settings_Themes_ApplyChatColors_Hint" xml:space="preserve">
+    <value>This theme suggests its own chat channel colours.</value>
+  </data>
+  <data name="Settings_Themes_ApplyChatColors_Apply" xml:space="preserve">
+    <value>Apply</value>
+  </data>
+  <data name="Settings_Themes_ApplyChatColors_Keep" xml:space="preserve">
+    <value>Keep current</value>
+  </data>
 </root>
diff --git a/HellionChat/Themes/Builtin/Chat2Classic.cs b/HellionChat/Themes/Builtin/Chat2Classic.cs
new file mode 100644
index 0000000..f0ba9e8
--- /dev/null
+++ b/HellionChat/Themes/Builtin/Chat2Classic.cs
@@ -0,0 +1,50 @@
+using HellionChat.Util;
+
+namespace HellionChat.Themes.Builtin;
+
+internal static class Chat2Classic
+{
+    public const string Slug = "chat2-classic";
+
+    public static Theme Build() => new(
+        Slug: Slug,
+        Name: "Chat 2 Klassik",
+        Author: "Upstream (Infi & Anna)",
+        Description: "Steel-blue accents on neutral dark grey, eckige Kanten. Vertraut für ChatTwo-Veteranen.",
+        Colors: new ThemeColors(
+            PrimaryDark:    ColourUtil.HexToRgba("#3D6E92"),
+            Primary:        ColourUtil.HexToRgba("#4682B4"),
+            PrimaryLight:   ColourUtil.HexToRgba("#5C9DC8"),
+            PrimaryGlow:    ColourUtil.HexToRgba("#4682B466"),
+
+            AccentDark:     ColourUtil.HexToRgba("#3D6E92"),
+            Accent:         ColourUtil.HexToRgba("#4682B4"),
+            AccentLight:    ColourUtil.HexToRgba("#5C9DC8"),
+
+            Identity:       ColourUtil.HexToRgba("#4682B4"),
+
+            WindowBg:       ColourUtil.HexToRgba("#0F0F0FF2"),
+            ChildBg:        ColourUtil.HexToRgba("#141414"),
+            FrameBg:        ColourUtil.HexToRgba("#1A1A1A"),
+            Surface:        ColourUtil.HexToRgba("#202020"),
+            SurfaceHover:   ColourUtil.HexToRgba("#2C2C2C"),
+            Border:         ColourUtil.HexToRgba("#404040"),
+
+            TextPrimary:    ColourUtil.HexToRgba("#E6E6E6"),
+            TextMuted:      ColourUtil.HexToRgba("#999999"),
+            TextDim:        ColourUtil.HexToRgba("#666666"),
+
+            StatusSuccess:  ColourUtil.HexToRgba("#5CB85C"),
+            StatusDanger:   ColourUtil.HexToRgba("#D9534F"),
+            StatusWarning:  ColourUtil.HexToRgba("#F0AD4E"),
+            StatusInfo:     ColourUtil.HexToRgba("#4682B4")
+        ),
+        Layout: new ThemeLayout(
+            WindowRounding: 0f, ChildRounding: 0f, PopupRounding: 0f,
+            FrameRounding: 0f, GrabRounding: 0f, TabRounding: 0f,
+            ScrollbarRounding: 0f, WindowBorderSize: 1f, FrameBorderSize: 1f
+        ),
+        Typography: new ThemeTypography(),
+        IsBuiltIn: true
+    );
+}
diff --git a/HellionChat/Themes/Builtin/EventHorizon.cs b/HellionChat/Themes/Builtin/EventHorizon.cs
new file mode 100644
index 0000000..c436ec6
--- /dev/null
+++ b/HellionChat/Themes/Builtin/EventHorizon.cs
@@ -0,0 +1,77 @@
+using HellionChat.Util;
+
+namespace HellionChat.Themes.Builtin;
+
+internal static class EventHorizon
+{
+    public const string Slug = "event-horizon";
+
+    public static Theme Build() => new(
+        Slug: Slug,
+        Name: "Event Horizon",
+        Author: "Hellion Online Media",
+        Description: "Cosmic Purple auf Near-Black. Deep-Space-Stimmung.",
+        Colors: new ThemeColors(
+            PrimaryDark:    ColourUtil.HexToRgba("#7B3FCF"),
+            Primary:        ColourUtil.HexToRgba("#9D5CFF"),
+            PrimaryLight:   ColourUtil.HexToRgba("#B585FF"),
+            PrimaryGlow:    ColourUtil.HexToRgba("#9D5CFF99"),
+
+            AccentDark:     ColourUtil.HexToRgba("#C9982E"),
+            Accent:         ColourUtil.HexToRgba("#E0AB36"),
+            AccentLight:    ColourUtil.HexToRgba("#F2C25C"),
+
+            Identity:       ColourUtil.HexToRgba("#9D5CFF"),
+
+            WindowBg:       ColourUtil.HexToRgba("#040308"),
+            ChildBg:        ColourUtil.HexToRgba("#0A081A"),
+            FrameBg:        ColourUtil.HexToRgba("#140F23"),
+            Surface:        ColourUtil.HexToRgba("#1B1530"),
+            SurfaceHover:   ColourUtil.HexToRgba("#251D40"),
+            Border:         ColourUtil.HexToRgba("#9D5CFF44"),
+
+            TextPrimary:    ColourUtil.HexToRgba("#E6E0F5"),
+            TextMuted:      ColourUtil.HexToRgba("#9890B5"),
+            TextDim:        ColourUtil.HexToRgba("#5A5570"),
+
+            StatusSuccess:  ColourUtil.HexToRgba("#26A269"),
+            StatusDanger:   ColourUtil.HexToRgba("#ED333B"),
+            StatusWarning:  ColourUtil.HexToRgba("#E0AB36"),
+            StatusInfo:     ColourUtil.HexToRgba("#9D5CFF")
+        ),
+        Layout: new ThemeLayout(
+            WindowRounding: 6f, ChildRounding: 5f, PopupRounding: 5f,
+            FrameRounding: 4f, GrabRounding: 4f, TabRounding: 4f,
+            ScrollbarRounding: 4f, WindowBorderSize: 1f, FrameBorderSize: 1f
+        ),
+        Typography: new ThemeTypography(),
+        IsBuiltIn: true,
+        ChatColors: new ThemeChatColors(new Dictionary<HellionChat.Code.ChatType, uint>
+        {
+            // Event Horizon — Cosmic-Purple-Drift: helle Pastelle bekommen
+            // Lavender-Tinte, Akzent-Channels (Tell) ziehen Richtung Magenta-
+            // Lila. Channel-Identität bleibt klar erkennbar.
+            [HellionChat.Code.ChatType.Say]              = ColourUtil.HexToRgba("#E6E0F5"),
+            [HellionChat.Code.ChatType.Yell]             = ColourUtil.HexToRgba("#F2C25C"),
+            [HellionChat.Code.ChatType.Shout]            = ColourUtil.HexToRgba("#FF9050"),
+            [HellionChat.Code.ChatType.TellIncoming]     = ColourUtil.HexToRgba("#E090FF"),
+            [HellionChat.Code.ChatType.TellOutgoing]     = ColourUtil.HexToRgba("#E090FF"),
+            [HellionChat.Code.ChatType.Party]            = ColourUtil.HexToRgba("#90A0FF"),
+            [HellionChat.Code.ChatType.Alliance]         = ColourUtil.HexToRgba("#FFAA80"),
+            [HellionChat.Code.ChatType.FreeCompany]      = ColourUtil.HexToRgba("#9090E8"),
+            [HellionChat.Code.ChatType.NoviceNetwork]    = ColourUtil.HexToRgba("#A0E090"),
+            [HellionChat.Code.ChatType.CrossParty]       = ColourUtil.HexToRgba("#90A0FF"),
+            [HellionChat.Code.ChatType.Linkshell1]       = ColourUtil.HexToRgba("#A0E090"),
+            [HellionChat.Code.ChatType.Linkshell2]       = ColourUtil.HexToRgba("#F0B070"),
+            [HellionChat.Code.ChatType.Linkshell3]       = ColourUtil.HexToRgba("#F2C25C"),
+            [HellionChat.Code.ChatType.Linkshell4]       = ColourUtil.HexToRgba("#80E0B0"),
+            [HellionChat.Code.ChatType.Linkshell5]       = ColourUtil.HexToRgba("#90A0FF"),
+            [HellionChat.Code.ChatType.Linkshell6]       = ColourUtil.HexToRgba("#B585FF"),
+            [HellionChat.Code.ChatType.Linkshell7]       = ColourUtil.HexToRgba("#E090FF"),
+            [HellionChat.Code.ChatType.Linkshell8]       = ColourUtil.HexToRgba("#D0A0F0"),
+            [HellionChat.Code.ChatType.CustomEmote]      = ColourUtil.HexToRgba("#E0B870"),
+            [HellionChat.Code.ChatType.StandardEmote]    = ColourUtil.HexToRgba("#E0B870"),
+            [HellionChat.Code.ChatType.Echo]             = ColourUtil.HexToRgba("#9890B5"),
+        })
+    );
+}
diff --git a/HellionChat/Themes/Builtin/HellionArctic.cs b/HellionChat/Themes/Builtin/HellionArctic.cs
new file mode 100644
index 0000000..481084f
--- /dev/null
+++ b/HellionChat/Themes/Builtin/HellionArctic.cs
@@ -0,0 +1,76 @@
+using HellionChat.Util;
+
+namespace HellionChat.Themes.Builtin;
+
+internal static class HellionArctic
+{
+    public const string Slug = "hellion-arctic";
+
+    public static Theme Build() => new(
+        Slug: Slug,
+        Name: "Hellion Arctic",
+        Author: "Hellion Online Media",
+        Description: "Arctic Cyan + Ember Glow on industrial slate. Plugin default.",
+        Colors: new ThemeColors(
+            PrimaryDark:    ColourUtil.HexToRgba("#0097A7"),
+            Primary:        ColourUtil.HexToRgba("#00BED2"),
+            PrimaryLight:   ColourUtil.HexToRgba("#4DD9E8"),
+            PrimaryGlow:    ColourUtil.HexToRgba("#00BED299"),
+
+            AccentDark:     ColourUtil.HexToRgba("#E85D04"),
+            Accent:         ColourUtil.HexToRgba("#F97316"),
+            AccentLight:    ColourUtil.HexToRgba("#FB923C"),
+
+            Identity:       ColourUtil.HexToRgba("#0097A7"),
+
+            WindowBg:       ColourUtil.HexToRgba("#070B12"),
+            ChildBg:        ColourUtil.HexToRgba("#0C1220"),
+            FrameBg:        ColourUtil.HexToRgba("#141E30"),
+            Surface:        ColourUtil.HexToRgba("#1A2538"),
+            SurfaceHover:   ColourUtil.HexToRgba("#22303F"),
+            Border:         ColourUtil.HexToRgba("#00BED266"),
+
+            TextPrimary:    ColourUtil.HexToRgba("#E6F4F1"),
+            TextMuted:      ColourUtil.HexToRgba("#8FA3B5"),
+            TextDim:        ColourUtil.HexToRgba("#566273"),
+
+            StatusSuccess:  ColourUtil.HexToRgba("#5CB85C"),
+            StatusDanger:   ColourUtil.HexToRgba("#D9534F"),
+            StatusWarning:  ColourUtil.HexToRgba("#F0AD4E"),
+            StatusInfo:     ColourUtil.HexToRgba("#00BED2")
+        ),
+        Layout: new ThemeLayout(
+            WindowRounding: 4f, ChildRounding: 3f, PopupRounding: 3f,
+            FrameRounding: 2f, GrabRounding: 2f, TabRounding: 2f,
+            ScrollbarRounding: 2f, WindowBorderSize: 1f, FrameBorderSize: 1f
+        ),
+        Typography: new ThemeTypography(),
+        IsBuiltIn: true,
+        ChatColors: new ThemeChatColors(new Dictionary<HellionChat.Code.ChatType, uint>
+        {
+            // Hellion Arctic — FFXIV-Standard mit dezenter Cyan-Tinte in den
+            // blauen Channels (Party/FC). Channel-Identität bleibt klar.
+            [HellionChat.Code.ChatType.Say]              = ColourUtil.HexToRgba("#FFFFFF"),
+            [HellionChat.Code.ChatType.Yell]             = ColourUtil.HexToRgba("#FFE066"),
+            [HellionChat.Code.ChatType.Shout]            = ColourUtil.HexToRgba("#FFA040"),
+            [HellionChat.Code.ChatType.TellIncoming]     = ColourUtil.HexToRgba("#FF99CC"),
+            [HellionChat.Code.ChatType.TellOutgoing]     = ColourUtil.HexToRgba("#FF99CC"),
+            [HellionChat.Code.ChatType.Party]            = ColourUtil.HexToRgba("#80C0E8"),
+            [HellionChat.Code.ChatType.Alliance]         = ColourUtil.HexToRgba("#FFB870"),
+            [HellionChat.Code.ChatType.FreeCompany]      = ColourUtil.HexToRgba("#4DD9E8"),
+            [HellionChat.Code.ChatType.NoviceNetwork]    = ColourUtil.HexToRgba("#A8E060"),
+            [HellionChat.Code.ChatType.CrossParty]       = ColourUtil.HexToRgba("#80C0E8"),
+            [HellionChat.Code.ChatType.Linkshell1]       = ColourUtil.HexToRgba("#A8E060"),
+            [HellionChat.Code.ChatType.Linkshell2]       = ColourUtil.HexToRgba("#FFC080"),
+            [HellionChat.Code.ChatType.Linkshell3]       = ColourUtil.HexToRgba("#FFE066"),
+            [HellionChat.Code.ChatType.Linkshell4]       = ColourUtil.HexToRgba("#80E8A8"),
+            [HellionChat.Code.ChatType.Linkshell5]       = ColourUtil.HexToRgba("#80C0E8"),
+            [HellionChat.Code.ChatType.Linkshell6]       = ColourUtil.HexToRgba("#A8A0F0"),
+            [HellionChat.Code.ChatType.Linkshell7]       = ColourUtil.HexToRgba("#FF99CC"),
+            [HellionChat.Code.ChatType.Linkshell8]       = ColourUtil.HexToRgba("#E8B0F0"),
+            [HellionChat.Code.ChatType.CustomEmote]      = ColourUtil.HexToRgba("#E8C880"),
+            [HellionChat.Code.ChatType.StandardEmote]    = ColourUtil.HexToRgba("#E8C880"),
+            [HellionChat.Code.ChatType.Echo]             = ColourUtil.HexToRgba("#C0C0C0"),
+        })
+    );
+}
diff --git a/HellionChat/Themes/Builtin/MintGrove.cs b/HellionChat/Themes/Builtin/MintGrove.cs
new file mode 100644
index 0000000..eab1f5c
--- /dev/null
+++ b/HellionChat/Themes/Builtin/MintGrove.cs
@@ -0,0 +1,77 @@
+using HellionChat.Util;
+
+namespace HellionChat.Themes.Builtin;
+
+internal static class MintGrove
+{
+    public const string Slug = "mint-grove";
+
+    public static Theme Build() => new(
+        Slug: Slug,
+        Name: "Mint Grove",
+        Author: "Hellion Online Media",
+        Description: "Mint Green + Honey Amber auf Deep Forest. Naturthemen-tauglich.",
+        Colors: new ThemeColors(
+            PrimaryDark:    ColourUtil.HexToRgba("#3CB371"),
+            Primary:        ColourUtil.HexToRgba("#5DD39E"),
+            PrimaryLight:   ColourUtil.HexToRgba("#8FE0B8"),
+            PrimaryGlow:    ColourUtil.HexToRgba("#5DD39E99"),
+
+            AccentDark:     ColourUtil.HexToRgba("#F4C870"),
+            Accent:         ColourUtil.HexToRgba("#F9D580"),
+            AccentLight:    ColourUtil.HexToRgba("#FCDD93"),
+
+            Identity:       ColourUtil.HexToRgba("#5DD39E"),
+
+            WindowBg:       ColourUtil.HexToRgba("#0A1410"),
+            ChildBg:        ColourUtil.HexToRgba("#10201A"),
+            FrameBg:        ColourUtil.HexToRgba("#162B22"),
+            Surface:        ColourUtil.HexToRgba("#1E372B"),
+            SurfaceHover:   ColourUtil.HexToRgba("#284335"),
+            Border:         ColourUtil.HexToRgba("#5DD39E55"),
+
+            TextPrimary:    ColourUtil.HexToRgba("#E8F5EA"),
+            TextMuted:      ColourUtil.HexToRgba("#9BB5A5"),
+            TextDim:        ColourUtil.HexToRgba("#5C6F65"),
+
+            StatusSuccess:  ColourUtil.HexToRgba("#5DD39E"),
+            StatusDanger:   ColourUtil.HexToRgba("#D9534F"),
+            StatusWarning:  ColourUtil.HexToRgba("#E8B590"),
+            StatusInfo:     ColourUtil.HexToRgba("#5DA9C7")
+        ),
+        Layout: new ThemeLayout(
+            WindowRounding: 5f, ChildRounding: 4f, PopupRounding: 4f,
+            FrameRounding: 3f, GrabRounding: 3f, TabRounding: 3f,
+            ScrollbarRounding: 3f, WindowBorderSize: 1f, FrameBorderSize: 1f
+        ),
+        Typography: new ThemeTypography(),
+        IsBuiltIn: true,
+        ChatColors: new ThemeChatColors(new Dictionary<HellionChat.Code.ChatType, uint>
+        {
+            // Mint Grove — Naturthemen-Tönung: Honey-Amber in Yell-Familie,
+            // Mint-Drift in NoviceNetwork und Linkshell. Tell-Pink-Identität
+            // bleibt erhalten für Erkennbarkeit.
+            [HellionChat.Code.ChatType.Say]              = ColourUtil.HexToRgba("#E8F5EA"),
+            [HellionChat.Code.ChatType.Yell]             = ColourUtil.HexToRgba("#F9D580"),
+            [HellionChat.Code.ChatType.Shout]            = ColourUtil.HexToRgba("#F0A050"),
+            [HellionChat.Code.ChatType.TellIncoming]     = ColourUtil.HexToRgba("#F098C8"),
+            [HellionChat.Code.ChatType.TellOutgoing]     = ColourUtil.HexToRgba("#F098C8"),
+            [HellionChat.Code.ChatType.Party]            = ColourUtil.HexToRgba("#80B8D0"),
+            [HellionChat.Code.ChatType.Alliance]         = ColourUtil.HexToRgba("#F0B070"),
+            [HellionChat.Code.ChatType.FreeCompany]      = ColourUtil.HexToRgba("#80C8B0"),
+            [HellionChat.Code.ChatType.NoviceNetwork]    = ColourUtil.HexToRgba("#8FE0B8"),
+            [HellionChat.Code.ChatType.CrossParty]       = ColourUtil.HexToRgba("#80B8D0"),
+            [HellionChat.Code.ChatType.Linkshell1]       = ColourUtil.HexToRgba("#8FE0B8"),
+            [HellionChat.Code.ChatType.Linkshell2]       = ColourUtil.HexToRgba("#F0BC80"),
+            [HellionChat.Code.ChatType.Linkshell3]       = ColourUtil.HexToRgba("#F9D580"),
+            [HellionChat.Code.ChatType.Linkshell4]       = ColourUtil.HexToRgba("#80E0A0"),
+            [HellionChat.Code.ChatType.Linkshell5]       = ColourUtil.HexToRgba("#80B8D0"),
+            [HellionChat.Code.ChatType.Linkshell6]       = ColourUtil.HexToRgba("#A89DC0"),
+            [HellionChat.Code.ChatType.Linkshell7]       = ColourUtil.HexToRgba("#F098C8"),
+            [HellionChat.Code.ChatType.Linkshell8]       = ColourUtil.HexToRgba("#D0A8C8"),
+            [HellionChat.Code.ChatType.CustomEmote]      = ColourUtil.HexToRgba("#E8C088"),
+            [HellionChat.Code.ChatType.StandardEmote]    = ColourUtil.HexToRgba("#E8C088"),
+            [HellionChat.Code.ChatType.Echo]             = ColourUtil.HexToRgba("#9BB5A5"),
+        })
+    );
+}
diff --git a/HellionChat/Themes/Builtin/MoonlitBloom.cs b/HellionChat/Themes/Builtin/MoonlitBloom.cs
new file mode 100644
index 0000000..3da16b3
--- /dev/null
+++ b/HellionChat/Themes/Builtin/MoonlitBloom.cs
@@ -0,0 +1,76 @@
+using HellionChat.Util;
+
+namespace HellionChat.Themes.Builtin;
+
+internal static class MoonlitBloom
+{
+    public const string Slug = "moonlit-bloom";
+
+    public static Theme Build() => new(
+        Slug: Slug,
+        Name: "Moonlit Bloom",
+        Author: "Hellion Online Media",
+        Description: "Bloom Magenta + Soft Sage auf Deep Violet Night.",
+        Colors: new ThemeColors(
+            PrimaryDark:    ColourUtil.HexToRgba("#C957D0"),
+            Primary:        ColourUtil.HexToRgba("#E374E8"),
+            PrimaryLight:   ColourUtil.HexToRgba("#EF8AF4"),
+            PrimaryGlow:    ColourUtil.HexToRgba("#E374E899"),
+
+            AccentDark:     ColourUtil.HexToRgba("#7AAC5C"),
+            Accent:         ColourUtil.HexToRgba("#9CCB7C"),
+            AccentLight:    ColourUtil.HexToRgba("#B6E297"),
+
+            Identity:       ColourUtil.HexToRgba("#E374E8"),
+
+            WindowBg:       ColourUtil.HexToRgba("#0E0C1F"),
+            ChildBg:        ColourUtil.HexToRgba("#15122B"),
+            FrameBg:        ColourUtil.HexToRgba("#1F1A38"),
+            Surface:        ColourUtil.HexToRgba("#28224A"),
+            SurfaceHover:   ColourUtil.HexToRgba("#332B5B"),
+            Border:         ColourUtil.HexToRgba("#E374E844"),
+
+            TextPrimary:    ColourUtil.HexToRgba("#ECE6F5"),
+            TextMuted:      ColourUtil.HexToRgba("#9A8BB0"),
+            TextDim:        ColourUtil.HexToRgba("#554B6E"),
+
+            StatusSuccess:  ColourUtil.HexToRgba("#7AAC5C"),
+            StatusDanger:   ColourUtil.HexToRgba("#E85C6A"),
+            StatusWarning:  ColourUtil.HexToRgba("#E8B590"),
+            StatusInfo:     ColourUtil.HexToRgba("#6278FF")
+        ),
+        Layout: new ThemeLayout(
+            WindowRounding: 6f, ChildRounding: 5f, PopupRounding: 5f,
+            FrameRounding: 4f, GrabRounding: 4f, TabRounding: 4f,
+            ScrollbarRounding: 4f, WindowBorderSize: 1f, FrameBorderSize: 1f
+        ),
+        Typography: new ThemeTypography(),
+        IsBuiltIn: true,
+        ChatColors: new ThemeChatColors(new Dictionary<HellionChat.Code.ChatType, uint>
+        {
+            // Moonlit Bloom — Bloom-Magenta-Tönung. Sage-Drift in NoviceNetwork
+            // und Linkshell4. Tell-Pink-Identität bleibt sichtbar.
+            [HellionChat.Code.ChatType.Say]              = ColourUtil.HexToRgba("#ECE6F5"),
+            [HellionChat.Code.ChatType.Yell]             = ColourUtil.HexToRgba("#F0D080"),
+            [HellionChat.Code.ChatType.Shout]            = ColourUtil.HexToRgba("#F09A60"),
+            [HellionChat.Code.ChatType.TellIncoming]     = ColourUtil.HexToRgba("#EF8AF4"),
+            [HellionChat.Code.ChatType.TellOutgoing]     = ColourUtil.HexToRgba("#EF8AF4"),
+            [HellionChat.Code.ChatType.Party]            = ColourUtil.HexToRgba("#A0B0F0"),
+            [HellionChat.Code.ChatType.Alliance]         = ColourUtil.HexToRgba("#F0B090"),
+            [HellionChat.Code.ChatType.FreeCompany]      = ColourUtil.HexToRgba("#A8C8E8"),
+            [HellionChat.Code.ChatType.NoviceNetwork]    = ColourUtil.HexToRgba("#9CCB7C"),
+            [HellionChat.Code.ChatType.CrossParty]       = ColourUtil.HexToRgba("#A0B0F0"),
+            [HellionChat.Code.ChatType.Linkshell1]       = ColourUtil.HexToRgba("#9CCB7C"),
+            [HellionChat.Code.ChatType.Linkshell2]       = ColourUtil.HexToRgba("#F0BC92"),
+            [HellionChat.Code.ChatType.Linkshell3]       = ColourUtil.HexToRgba("#F0D080"),
+            [HellionChat.Code.ChatType.Linkshell4]       = ColourUtil.HexToRgba("#B6E297"),
+            [HellionChat.Code.ChatType.Linkshell5]       = ColourUtil.HexToRgba("#A0B0F0"),
+            [HellionChat.Code.ChatType.Linkshell6]       = ColourUtil.HexToRgba("#C098D8"),
+            [HellionChat.Code.ChatType.Linkshell7]       = ColourUtil.HexToRgba("#EF8AF4"),
+            [HellionChat.Code.ChatType.Linkshell8]       = ColourUtil.HexToRgba("#E8B0E8"),
+            [HellionChat.Code.ChatType.CustomEmote]      = ColourUtil.HexToRgba("#E8B590"),
+            [HellionChat.Code.ChatType.StandardEmote]    = ColourUtil.HexToRgba("#E8B590"),
+            [HellionChat.Code.ChatType.Echo]             = ColourUtil.HexToRgba("#9A8BB0"),
+        })
+    );
+}
diff --git a/HellionChat/Themes/Builtin/example-theme.json b/HellionChat/Themes/Builtin/example-theme.json
new file mode 100644
index 0000000..1f547f7
--- /dev/null
+++ b/HellionChat/Themes/Builtin/example-theme.json
@@ -0,0 +1,41 @@
+{
+  "schemaVersion": 1,
+  "slug": "example-custom",
+  "name": "Example Custom",
+  "author": "You",
+  "description": "Starting template — duplicate, rename, edit colors and reload.",
+  "colors": {
+    "primaryDark":   "#0097A7",
+    "primary":       "#00BED2",
+    "primaryLight":  "#4DD9E8",
+    "primaryGlow":   "#00BED299",
+    "accentDark":    "#E85D04",
+    "accent":        "#F97316",
+    "accentLight":   "#FB923C",
+    "identity":      "#0097A7",
+    "windowBg":      "#070B12",
+    "childBg":       "#0C1220",
+    "frameBg":       "#141E30",
+    "surface":       "#1A2538",
+    "surfaceHover":  "#22303F",
+    "border":        "#00BED266",
+    "textPrimary":   "#E6F4F1",
+    "textMuted":     "#8FA3B5",
+    "textDim":       "#566273",
+    "statusSuccess": "#5CB85C",
+    "statusDanger":  "#D9534F",
+    "statusWarning": "#F0AD4E",
+    "statusInfo":    "#00BED2"
+  },
+  "layout": {
+    "windowRounding": 4,
+    "childRounding": 3,
+    "popupRounding": 3,
+    "frameRounding": 2,
+    "grabRounding": 2,
+    "tabRounding": 2,
+    "scrollbarRounding": 2,
+    "windowBorderSize": 1,
+    "frameBorderSize": 1
+  }
+}
diff --git a/HellionChat/Themes/Theme.cs b/HellionChat/Themes/Theme.cs
new file mode 100644
index 0000000..18eee74
--- /dev/null
+++ b/HellionChat/Themes/Theme.cs
@@ -0,0 +1,13 @@
+namespace HellionChat.Themes;
+
+public sealed record Theme(
+    string Slug,
+    string Name,
+    string Author,
+    string Description,
+    ThemeColors Colors,
+    ThemeLayout Layout,
+    ThemeTypography Typography,
+    bool IsBuiltIn,
+    ThemeChatColors? ChatColors = null
+);
diff --git a/HellionChat/Themes/ThemeChatColors.cs b/HellionChat/Themes/ThemeChatColors.cs
new file mode 100644
index 0000000..3c2ba1b
--- /dev/null
+++ b/HellionChat/Themes/ThemeChatColors.cs
@@ -0,0 +1,11 @@
+using HellionChat.Code;
+
+namespace HellionChat.Themes;
+
+// Optional pro Theme. Wenn ein Theme ChatColors mitliefert, kann der
+// User sie per Klick im Themes-Tab auf Configuration.ChatColours anwenden.
+// Ein Theme ohne ChatColors (z.B. chat2-classic) lässt die User-Channel-
+// Farben unverändert.
+public sealed record ThemeChatColors(
+    IReadOnlyDictionary<ChatType, uint> Channels
+);
diff --git a/HellionChat/Themes/ThemeColors.cs b/HellionChat/Themes/ThemeColors.cs
new file mode 100644
index 0000000..192ff71
--- /dev/null
+++ b/HellionChat/Themes/ThemeColors.cs
@@ -0,0 +1,31 @@
+namespace HellionChat.Themes;
+
+// Color-Werte als 0xRRGGBBAA, RgbaToAbgr handled den Byte-Swap zu ImGui.
+public sealed record ThemeColors(
+    uint PrimaryDark,
+    uint Primary,
+    uint PrimaryLight,
+    uint PrimaryGlow,
+
+    uint AccentDark,
+    uint Accent,
+    uint AccentLight,
+
+    uint Identity,
+
+    uint WindowBg,
+    uint ChildBg,
+    uint FrameBg,
+    uint Surface,
+    uint SurfaceHover,
+    uint Border,
+
+    uint TextPrimary,
+    uint TextMuted,
+    uint TextDim,
+
+    uint StatusSuccess,
+    uint StatusDanger,
+    uint StatusWarning,
+    uint StatusInfo
+);
diff --git a/HellionChat/Themes/ThemeJsonLoader.cs b/HellionChat/Themes/ThemeJsonLoader.cs
new file mode 100644
index 0000000..e340165
--- /dev/null
+++ b/HellionChat/Themes/ThemeJsonLoader.cs
@@ -0,0 +1,131 @@
+using System.Text.Json;
+using HellionChat.Util;
+
+namespace HellionChat.Themes;
+
+internal static class ThemeJsonLoader
+{
+    public const int SupportedSchemaVersion = 1;
+
+    public static Theme LoadFromString(string json)
+    {
+        if (string.IsNullOrWhiteSpace(json))
+            throw new FormatException("Theme JSON is empty");
+
+        JsonDocument doc;
+        try { doc = JsonDocument.Parse(json); }
+        catch (JsonException ex) { throw new FormatException("Theme JSON is not valid JSON", ex); }
+
+        using (doc)
+        {
+            var root = doc.RootElement;
+
+            var schemaVersion = ReadInt(root, "schemaVersion");
+            if (schemaVersion != SupportedSchemaVersion)
+                throw new FormatException($"Unsupported schemaVersion {schemaVersion}; expected {SupportedSchemaVersion}");
+
+            var slug        = ReadString(root, "slug");
+            var name        = ReadString(root, "name");
+            var author      = ReadString(root, "author");
+            var description = ReadString(root, "description");
+
+            var colors = ReadColors(root.GetProperty("colors"));
+            var layout = ReadLayout(root.GetProperty("layout"));
+
+            ThemeChatColors? chatColors = null;
+            if (root.TryGetProperty("chatChannels", out var ch) && ch.ValueKind == JsonValueKind.Object)
+                chatColors = ReadChatColors(ch);
+
+            return new Theme(slug, name, author, description, colors, layout, new ThemeTypography(), IsBuiltIn: false, ChatColors: chatColors);
+        }
+    }
+
+    private static ThemeChatColors ReadChatColors(JsonElement el)
+    {
+        var dict = new Dictionary<HellionChat.Code.ChatType, uint>();
+        foreach (var prop in el.EnumerateObject())
+        {
+            // Property-Name ist der ChatType-Name als String (z.B. "Say", "Tell"),
+            // Value ist Hex wie bei den Theme-Colors. Unbekannte Channel-Names
+            // werden still übersprungen — Forward-Compat falls SE neue Channels
+            // einführt.
+            if (!Enum.TryParse<HellionChat.Code.ChatType>(prop.Name, ignoreCase: true, out var channel))
+                continue;
+            if (prop.Value.ValueKind != JsonValueKind.String)
+                continue;
+            var hex = prop.Value.GetString();
+            if (string.IsNullOrWhiteSpace(hex))
+                continue;
+            dict[channel] = HellionChat.Util.ColourUtil.HexToRgba(hex);
+        }
+        return new ThemeChatColors(dict);
+    }
+
+    public static Theme LoadFromFile(string path)
+    {
+        var json = File.ReadAllText(path);
+        return LoadFromString(json);
+    }
+
+    private static ThemeColors ReadColors(JsonElement el) => new(
+        PrimaryDark:   ColourUtil.HexToRgba(ReadString(el, "primaryDark")),
+        Primary:       ColourUtil.HexToRgba(ReadString(el, "primary")),
+        PrimaryLight:  ColourUtil.HexToRgba(ReadString(el, "primaryLight")),
+        PrimaryGlow:   ColourUtil.HexToRgba(ReadString(el, "primaryGlow")),
+
+        AccentDark:    ColourUtil.HexToRgba(ReadString(el, "accentDark")),
+        Accent:        ColourUtil.HexToRgba(ReadString(el, "accent")),
+        AccentLight:   ColourUtil.HexToRgba(ReadString(el, "accentLight")),
+
+        Identity:      ColourUtil.HexToRgba(ReadString(el, "identity")),
+
+        WindowBg:      ColourUtil.HexToRgba(ReadString(el, "windowBg")),
+        ChildBg:       ColourUtil.HexToRgba(ReadString(el, "childBg")),
+        FrameBg:       ColourUtil.HexToRgba(ReadString(el, "frameBg")),
+        Surface:       ColourUtil.HexToRgba(ReadString(el, "surface")),
+        SurfaceHover:  ColourUtil.HexToRgba(ReadString(el, "surfaceHover")),
+        Border:        ColourUtil.HexToRgba(ReadString(el, "border")),
+
+        TextPrimary:   ColourUtil.HexToRgba(ReadString(el, "textPrimary")),
+        TextMuted:     ColourUtil.HexToRgba(ReadString(el, "textMuted")),
+        TextDim:       ColourUtil.HexToRgba(ReadString(el, "textDim")),
+
+        StatusSuccess: ColourUtil.HexToRgba(ReadString(el, "statusSuccess")),
+        StatusDanger:  ColourUtil.HexToRgba(ReadString(el, "statusDanger")),
+        StatusWarning: ColourUtil.HexToRgba(ReadString(el, "statusWarning")),
+        StatusInfo:    ColourUtil.HexToRgba(ReadString(el, "statusInfo"))
+    );
+
+    private static ThemeLayout ReadLayout(JsonElement el) => new(
+        WindowRounding:    ReadFloat(el, "windowRounding"),
+        ChildRounding:     ReadFloat(el, "childRounding"),
+        PopupRounding:     ReadFloat(el, "popupRounding"),
+        FrameRounding:     ReadFloat(el, "frameRounding"),
+        GrabRounding:      ReadFloat(el, "grabRounding"),
+        TabRounding:       ReadFloat(el, "tabRounding"),
+        ScrollbarRounding: ReadFloat(el, "scrollbarRounding"),
+        WindowBorderSize:  ReadFloat(el, "windowBorderSize"),
+        FrameBorderSize:   ReadFloat(el, "frameBorderSize")
+    );
+
+    private static string ReadString(JsonElement el, string name)
+    {
+        if (!el.TryGetProperty(name, out var v) || v.ValueKind != JsonValueKind.String)
+            throw new FormatException($"Theme JSON missing string property '{name}'");
+        return v.GetString() ?? throw new FormatException($"Theme JSON property '{name}' is null");
+    }
+
+    private static int ReadInt(JsonElement el, string name)
+    {
+        if (!el.TryGetProperty(name, out var v) || v.ValueKind != JsonValueKind.Number)
+            throw new FormatException($"Theme JSON missing number property '{name}'");
+        return v.GetInt32();
+    }
+
+    private static float ReadFloat(JsonElement el, string name)
+    {
+        if (!el.TryGetProperty(name, out var v) || v.ValueKind != JsonValueKind.Number)
+            throw new FormatException($"Theme JSON missing number property '{name}'");
+        return (float)v.GetDouble();
+    }
+}
diff --git a/HellionChat/Themes/ThemeJsonWriter.cs b/HellionChat/Themes/ThemeJsonWriter.cs
new file mode 100644
index 0000000..9cf197a
--- /dev/null
+++ b/HellionChat/Themes/ThemeJsonWriter.cs
@@ -0,0 +1,73 @@
+using System.Text.Json;
+
+namespace HellionChat.Themes;
+
+internal static class ThemeJsonWriter
+{
+    public static string Serialize(Theme theme)
+    {
+        using var ms = new MemoryStream();
+        using (var writer = new Utf8JsonWriter(ms, new JsonWriterOptions { Indented = true }))
+        {
+            writer.WriteStartObject();
+            writer.WriteNumber("schemaVersion", ThemeJsonLoader.SupportedSchemaVersion);
+            writer.WriteString("slug", theme.Slug);
+            writer.WriteString("name", theme.Name);
+            writer.WriteString("author", theme.Author);
+            writer.WriteString("description", theme.Description);
+
+            writer.WriteStartObject("colors");
+            WriteColor(writer, "primaryDark",   theme.Colors.PrimaryDark);
+            WriteColor(writer, "primary",       theme.Colors.Primary);
+            WriteColor(writer, "primaryLight",  theme.Colors.PrimaryLight);
+            WriteColor(writer, "primaryGlow",   theme.Colors.PrimaryGlow);
+            WriteColor(writer, "accentDark",    theme.Colors.AccentDark);
+            WriteColor(writer, "accent",        theme.Colors.Accent);
+            WriteColor(writer, "accentLight",   theme.Colors.AccentLight);
+            WriteColor(writer, "identity",      theme.Colors.Identity);
+            WriteColor(writer, "windowBg",      theme.Colors.WindowBg);
+            WriteColor(writer, "childBg",       theme.Colors.ChildBg);
+            WriteColor(writer, "frameBg",       theme.Colors.FrameBg);
+            WriteColor(writer, "surface",       theme.Colors.Surface);
+            WriteColor(writer, "surfaceHover",  theme.Colors.SurfaceHover);
+            WriteColor(writer, "border",        theme.Colors.Border);
+            WriteColor(writer, "textPrimary",   theme.Colors.TextPrimary);
+            WriteColor(writer, "textMuted",     theme.Colors.TextMuted);
+            WriteColor(writer, "textDim",       theme.Colors.TextDim);
+            WriteColor(writer, "statusSuccess", theme.Colors.StatusSuccess);
+            WriteColor(writer, "statusDanger",  theme.Colors.StatusDanger);
+            WriteColor(writer, "statusWarning", theme.Colors.StatusWarning);
+            WriteColor(writer, "statusInfo",    theme.Colors.StatusInfo);
+            writer.WriteEndObject();
+
+            writer.WriteStartObject("layout");
+            writer.WriteNumber("windowRounding",    theme.Layout.WindowRounding);
+            writer.WriteNumber("childRounding",     theme.Layout.ChildRounding);
+            writer.WriteNumber("popupRounding",     theme.Layout.PopupRounding);
+            writer.WriteNumber("frameRounding",     theme.Layout.FrameRounding);
+            writer.WriteNumber("grabRounding",      theme.Layout.GrabRounding);
+            writer.WriteNumber("tabRounding",       theme.Layout.TabRounding);
+            writer.WriteNumber("scrollbarRounding", theme.Layout.ScrollbarRounding);
+            writer.WriteNumber("windowBorderSize",  theme.Layout.WindowBorderSize);
+            writer.WriteNumber("frameBorderSize",   theme.Layout.FrameBorderSize);
+            writer.WriteEndObject();
+
+            if (theme.ChatColors is { Channels.Count: > 0 } cc)
+            {
+                writer.WriteStartObject("chatChannels");
+                foreach (var kvp in cc.Channels)
+                    writer.WriteString(kvp.Key.ToString(), $"#{kvp.Value:X8}");
+                writer.WriteEndObject();
+            }
+
+            writer.WriteEndObject();
+        }
+
+        return System.Text.Encoding.UTF8.GetString(ms.ToArray());
+    }
+
+    private static void WriteColor(Utf8JsonWriter writer, string key, uint rgba)
+    {
+        writer.WriteString(key, $"#{rgba:X8}");
+    }
+}
diff --git a/HellionChat/Themes/ThemeLayout.cs b/HellionChat/Themes/ThemeLayout.cs
new file mode 100644
index 0000000..116c2a3
--- /dev/null
+++ b/HellionChat/Themes/ThemeLayout.cs
@@ -0,0 +1,14 @@
+namespace HellionChat.Themes;
+
+// Layout-Werte spiegeln die ImGuiStyleVar-Slots, die HellionStyle pusht.
+public sealed record ThemeLayout(
+    float WindowRounding,
+    float ChildRounding,
+    float PopupRounding,
+    float FrameRounding,
+    float GrabRounding,
+    float TabRounding,
+    float ScrollbarRounding,
+    float WindowBorderSize,
+    float FrameBorderSize
+);
diff --git a/HellionChat/Themes/ThemeRegistry.cs b/HellionChat/Themes/ThemeRegistry.cs
new file mode 100644
index 0000000..3e14c84
--- /dev/null
+++ b/HellionChat/Themes/ThemeRegistry.cs
@@ -0,0 +1,96 @@
+using HellionChat.Themes.Builtin;
+
+namespace HellionChat.Themes;
+
+public sealed class ThemeRegistry
+{
+    public const string DefaultSlug = HellionArctic.Slug;
+
+    private readonly Dictionary<string, Theme> _builtIns;
+    private readonly Dictionary<string, (Theme Theme, DateTime Stamp)> _customCache = new(StringComparer.OrdinalIgnoreCase);
+    private readonly string? _customThemesDir;
+    private Theme _active;
+
+    public ThemeRegistry(string? customThemesDir = null)
+    {
+        _builtIns = new Dictionary<string, Theme>(StringComparer.OrdinalIgnoreCase)
+        {
+            { HellionArctic.Slug, HellionArctic.Build() },
+            { Chat2Classic.Slug,  Chat2Classic.Build() },
+            { EventHorizon.Slug,  EventHorizon.Build() },
+            { MoonlitBloom.Slug,  MoonlitBloom.Build() },
+            { MintGrove.Slug,     MintGrove.Build() },
+        };
+        _active = _builtIns[DefaultSlug];
+        _customThemesDir = customThemesDir;
+    }
+
+    public Theme Active => _active;
+
+    public Theme Get(string slug)
+    {
+        if (_builtIns.TryGetValue(slug, out var b)) return b;
+
+        var custom = LoadCustomBySlug(slug);
+        if (custom != null) return custom;
+
+        return _builtIns[DefaultSlug];
+    }
+
+    public IEnumerable<Theme> AllBuiltIns() => _builtIns.Values;
+
+    public IEnumerable<Theme> AllCustom() => RefreshCustomCache();
+
+    public void Switch(string slug) => _active = Get(slug);
+
+    // Custom-Themes werden lazy aus dem Verzeichnis geladen, Cache mit
+    // LastWriteTime-Token. Eine geänderte JSON wird beim nächsten Lookup
+    // neu eingelesen.
+    private Theme? LoadCustomBySlug(string slug)
+    {
+        if (_customThemesDir is null) return null;
+        if (!Directory.Exists(_customThemesDir)) return null;
+
+        foreach (var theme in RefreshCustomCache())
+            if (string.Equals(theme.Slug, slug, StringComparison.OrdinalIgnoreCase))
+                return theme;
+        return null;
+    }
+
+    private IEnumerable<Theme> RefreshCustomCache()
+    {
+        if (_customThemesDir is null || !Directory.Exists(_customThemesDir))
+            yield break;
+
+        var seenSlugs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        foreach (var path in Directory.EnumerateFiles(_customThemesDir, "*.json"))
+        {
+            Theme? theme = null;
+            var stamp = File.GetLastWriteTimeUtc(path);
+            var key = path;
+            if (_customCache.TryGetValue(key, out var cached) && cached.Stamp == stamp)
+            {
+                theme = cached.Theme;
+            }
+            else
+            {
+                try
+                {
+                    theme = ThemeJsonLoader.LoadFromFile(path);
+                    _customCache[key] = (theme, stamp);
+                }
+                catch (Exception ex)
+                {
+                    // Logging passiert in Plugin.cs durch den Aufrufer; hier still
+                    // ignorieren, damit ein einzelnes kaputtes JSON nicht alle
+                    // Custom-Themes blockt.
+                    _ = ex;
+                    continue;
+                }
+            }
+
+            if (theme is not null && seenSlugs.Add(theme.Slug))
+                yield return theme;
+        }
+    }
+}
diff --git a/HellionChat/Themes/ThemeTypography.cs b/HellionChat/Themes/ThemeTypography.cs
new file mode 100644
index 0000000..b1fbf3a
--- /dev/null
+++ b/HellionChat/Themes/ThemeTypography.cs
@@ -0,0 +1,8 @@
+namespace HellionChat.Themes;
+
+// Optional pro Theme. v1.1.0 nutzt das nicht aktiv; ist als Erweiterungspunkt
+// für zukünftige Theme-Slots vorbereitet.
+public sealed record ThemeTypography(
+    float? OverrideGlobalFontSizePt = null,
+    float? OverrideSymbolsFontSizePt = null
+);
diff --git a/HellionChat/Ui/ChatLogWindow.cs b/HellionChat/Ui/ChatLogWindow.cs
index cd7c8db..5949104 100644
--- a/HellionChat/Ui/ChatLogWindow.cs
+++ b/HellionChat/Ui/ChatLogWindow.cs
@@ -494,9 +494,7 @@ public sealed class ChatLogWindow : Window
             Flags |= ImGuiWindowFlags.NoTitleBar;
 
         if (LastViewport == ImGuiHelpers.MainViewport.Handle && !WasDocked)
-            BgAlpha = Plugin.Config.HellionThemeEnabled
-                ? Plugin.Config.HellionThemeWindowOpacity
-                : Plugin.Config.WindowAlpha / 100f;
+            BgAlpha = Plugin.Config.WindowOpacity;
 
         LastViewport = ImGui.GetWindowViewport().Handle;
         WasDocked = ImGui.IsWindowDocked();
@@ -523,28 +521,16 @@ public sealed class ChatLogWindow : Window
         return FrameTime - lastActivityTime <= 1000 * Plugin.Config.InactivityHideTimeout;
     }
 
-    // Tracks the style instance pushed in PreDraw so PostDraw can pop the same
-    // one even if the user toggled OverrideStyle / ChosenStyle mid-frame.
-    // Without this, a config change between PreDraw and PostDraw could either
-    // leak a Push (no matching Pop) or pop nothing while we still have a frame
-    // pushed onto the ImGui stack.
-    private StyleModel? _pushedStyle;
-
     public override void PreDraw()
     {
         if (Plugin.Config.KeepInputFocus && Activate)
             ImGui.SetWindowFocus(WindowName);
 
-        _pushedStyle = null;
-        if (Plugin.Config is { OverrideStyle: true, ChosenStyle: not null })
-        {
-            var style = StyleModel.GetConfiguredStyles()?.FirstOrDefault(s => s.Name == Plugin.Config.ChosenStyle);
-            if (style != null)
-            {
-                style.Push();
-                _pushedStyle = style;
-            }
-        }
+        // Hellion Chat v1.1.0+ — Theme-Engine ist Source-of-Truth, kein
+        // zusätzlicher Dalamud-StyleModel-Override mehr pro Window. Plugin.Draw
+        // pusht das aktive Hellion-Theme global; ChatLogWindow zeichnet sich
+        // damit konsistent zu Settings/Pop-Out/Wizard. Wer den Upstream-Look
+        // will, wählt das Built-In-Theme "Chat 2 Klassik" in Settings → Themes.
     }
 
     public override void PostDraw()
@@ -555,12 +541,6 @@ public sealed class ChatLogWindow : Window
         // doesn't get called if the input is disabled.
         if (Plugin.CurrentTab.InputDisabled)
             Activate = false;
-
-        if (_pushedStyle != null)
-        {
-            _pushedStyle.Pop();
-            _pushedStyle = null;
-        }
     }
 
     public override void OnClose()
diff --git a/HellionChat/Ui/HellionStyle.cs b/HellionChat/Ui/HellionStyle.cs
index 026c464..39d839b 100644
--- a/HellionChat/Ui/HellionStyle.cs
+++ b/HellionChat/Ui/HellionStyle.cs
@@ -1,3 +1,4 @@
+using HellionChat.Themes;
 using HellionChat.Util;
 using Dalamud.Bindings.ImGui;
 using Dalamud.Interface.Utility.Raii;
@@ -5,207 +6,119 @@ using Dalamud.Interface.Utility.Raii;
 namespace HellionChat.Ui;
 
 /// <summary>
-/// ImGui style override for Hellion Chat. Industrial HUD palette with three
-/// distinct accents — cyan-teal as the primary action color, industrial
-/// amber for active state highlights, slate-violet for title bars and
-/// active tabs — on a deep-slate frame background with steel borders.
-///
-/// Two entry points:
-///   Push       — local color stack, scoped via using-block. Use inside
-///                Hellion-only surfaces (Privacy tab, first-run wizard).
-///   PushGlobal — full color + style variable stack. Pushed once per frame
-///                in Plugin.Draw so every Hellion-rendered window inherits
-///                the look. Cheap to pop because ImGui keeps its own stack.
+/// ImGui style override for Hellion Chat. v1.1.0 ist die Engine
+/// theme-getrieben: PushGlobal nimmt eine Theme-Instance + Window-
+/// Opacity, die gesamten Color- und Style-Slots werden aus dem Theme
+/// gelesen statt aus einer fixen Konstanten-Tabelle.
 /// </summary>
 internal static class HellionStyle
 {
-    // Encoded as 0xRRGGBBAA, matching ChatTwo convention (see Settings.cs
-    // Ko-fi buttons). RgbaToAbgr handles the byte swap to the format ImGui
-    // expects. Hex values are sourced from the Hellion Online Media brand
-    // guide ("Arctic Cyan + Ember Glow", BRANDING.md in the website repo).
-
-    // Primary — Arctic Cyan, used for every interactive control (buttons,
-    // checks, sliders, separators when hovered). Three brand stages plus a
-    // hover that lifts to brand-color-light and a press that drops to
-    // brand-color-dark.
-    private const uint PrimaryRgba = 0x00BED2FF;       // brand-color
-    private const uint PrimaryHoverRgba = 0x4DD9E8FF;  // brand-color-light
-    private const uint PrimaryActiveRgba = 0x0097A7FF; // brand-color-dark
-
-    // Identity — brand-color-dark teal for window title bars and the
-    // active tab. Sits visibly below the primary cyan on buttons so the
-    // user sees "where am I" (deep teal) versus "what can I click"
-    // (brand cyan) without leaving the cyan family.
-    private const uint IdentityRgba = 0x0097A7FF;       // brand-color-dark
-    private const uint IdentityHoverRgba = 0x4DD9E8FF;  // brand-color-light
-    private const uint IdentityDeepRgba = 0x005670FF;   // dimmer teal for unfocused-active tab
-
-    // Accent — Ember Orange for warm highlights on grips and scrollbar
-    // pulls. Replaces the previous industrial amber so the plugin matches
-    // the website's CTA palette. AccentActive is reserved for any future
-    // pressed-state on accent surfaces; the current slots only need
-    // AccentRgba and AccentHoverRgba.
-    private const uint AccentRgba = 0xF97316FF;        // accent-color
-    private const uint AccentHoverRgba = 0xFB923CFF;   // accent-color-light
-
-    // Surfaces — Hellion brand background ladder. Window darkest, frame
-    // hover ladder climbs into surface tones. Matches the website's
-    // background / background-medium / background-light / surface vars.
-    private const uint WindowBgRgba = 0x070B12FF;       // background
-    private const uint ChildBgRgba = 0x0C1220FF;        // background-medium
-    private const uint PopupBgRgba = 0x0C1220FF;        // background-medium
-    private const uint FrameBgRgba = 0x141E30FF;        // background-light
-    private const uint FrameBgHoverRgba = 0x1A2538FF;   // surface
-    private const uint FrameBgActiveRgba = 0x22303FFF;  // surface-hover
-    // Cyan-tinted border — matches website --border-brand (cyan @ 40% α).
-    private const uint BorderRgba = 0x00BED266;
-    private const uint BorderShadowRgba = 0x00000000;
-
-    // Headers / collapsing-headers / tree nodes / selectables — same
-    // surface ladder as frames so panels feel consistent.
-    private const uint HeaderRgba = 0x141E30FF;
-    private const uint HeaderHoverRgba = 0x1A2538FF;
-    private const uint HeaderActiveRgba = 0x22303FFF;
-
-    // Title bars — Identity teal on active so the focused window reads
-    // as "yours" without using accent or primary slots.
-    private const uint TitleBgRgba = 0x070B12FF;
-    private const uint TitleBgActiveRgba = IdentityRgba;
-    private const uint TitleBgCollapsedRgba = 0x05080EFF;
-
-    // Tabs — neutral inactive, Identity-light on hover, Identity teal on
-    // active. Unfocused-active uses the deeper Identity stage so an
-    // unfocused window's active tab still reads but does not pull focus.
-    private const uint TabRgba = 0x141E30FF;
-    private const uint TabHoveredRgba = IdentityHoverRgba;
-    private const uint TabActiveRgba = IdentityRgba;
-    private const uint TabUnfocusedRgba = 0x0C1220FF;
-    private const uint TabUnfocusedActiveRgba = IdentityDeepRgba;
-
-    // Scrollbar — Ember on grab so the pull stands out without competing
-    // with the cyan action buttons. Idle grab is a subtle surface tone,
-    // hover/active climb into accent.
-    private const uint ScrollbarBgRgba = 0x070B12FF;
-    private const uint ScrollbarGrabRgba = 0x22303FFF;       // surface-hover
-    private const uint ScrollbarGrabHoveredRgba = AccentHoverRgba;
-    private const uint ScrollbarGrabActiveRgba = AccentRgba;
-
-    // Resize grip — same Ember treatment as the scrollbar.
-    private const uint ResizeGripRgba = 0x141E30FF;
-    private const uint ResizeGripHoveredRgba = AccentHoverRgba;
-    private const uint ResizeGripActiveRgba = AccentRgba;
-
-    // Separator and check mark / slider follow the primary cyan.
-
     /// <summary>
-    /// Local color stack for Hellion-only surfaces. Cheap. Use inside a
-    /// `using var _ = HellionStyle.Push();` block.
+    /// Local color stack auf Basis des aktiven Themes. Cheap. Use inside a
+    /// `using var _ = HellionStyle.Push(theme);` block.
     /// </summary>
-    internal static IDisposable Push()
+    internal static IDisposable Push(Theme theme)
     {
+        var c = theme.Colors;
         var stack = new StackHandle();
-        stack.PushColor(ImGuiCol.Button, PrimaryRgba);
-        stack.PushColor(ImGuiCol.ButtonHovered, PrimaryHoverRgba);
-        stack.PushColor(ImGuiCol.ButtonActive, PrimaryActiveRgba);
-        stack.PushColor(ImGuiCol.FrameBg, FrameBgRgba);
-        stack.PushColor(ImGuiCol.FrameBgHovered, FrameBgHoverRgba);
-        stack.PushColor(ImGuiCol.FrameBgActive, FrameBgActiveRgba);
-        stack.PushColor(ImGuiCol.Border, BorderRgba);
-        stack.PushColor(ImGuiCol.Header, HeaderRgba);
-        stack.PushColor(ImGuiCol.HeaderHovered, HeaderHoverRgba);
-        stack.PushColor(ImGuiCol.HeaderActive, HeaderActiveRgba);
-        stack.PushColor(ImGuiCol.CheckMark, PrimaryRgba);
-        stack.PushColor(ImGuiCol.SliderGrab, PrimaryRgba);
-        stack.PushColor(ImGuiCol.SliderGrabActive, PrimaryHoverRgba);
+        stack.PushColor(ImGuiCol.Button,           c.Primary);
+        stack.PushColor(ImGuiCol.ButtonHovered,    c.PrimaryLight);
+        stack.PushColor(ImGuiCol.ButtonActive,     c.PrimaryDark);
+        stack.PushColor(ImGuiCol.FrameBg,          c.FrameBg);
+        stack.PushColor(ImGuiCol.FrameBgHovered,   c.SurfaceHover);
+        stack.PushColor(ImGuiCol.FrameBgActive,    c.Surface);
+        stack.PushColor(ImGuiCol.Border,           c.Border);
+        stack.PushColor(ImGuiCol.Header,           c.Surface);
+        stack.PushColor(ImGuiCol.HeaderHovered,    c.SurfaceHover);
+        stack.PushColor(ImGuiCol.HeaderActive,     c.Identity);
+        stack.PushColor(ImGuiCol.CheckMark,        c.Primary);
+        stack.PushColor(ImGuiCol.SliderGrab,       c.Primary);
+        stack.PushColor(ImGuiCol.SliderGrabActive, c.PrimaryLight);
         return stack;
     }
 
     /// <summary>
     /// Global color and style-variable stack pushed once per frame in
-    /// Plugin.Draw. Covers every ImGui surface the plugin renders so the
-    /// Hellion look is consistent across upstream and Hellion tabs.
+    /// Plugin.Draw. Drives every Hellion-rendered window from the active
+    /// theme's palette and layout values.
     /// </summary>
-    /// <param name="windowOpacity">Window background alpha (0.5–1.0). Lower
-    /// values let the game shine through the plugin panes.</param>
-    internal static IDisposable PushGlobal(float windowOpacity = 1.0f)
+    /// <param name="theme">Active theme from ThemeRegistry.</param>
+    /// <param name="windowOpacity">Window background alpha (0.5–1.0).</param>
+    internal static IDisposable PushGlobal(Theme theme, float windowOpacity = 1.0f)
     {
+        var c = theme.Colors;
+        var l = theme.Layout;
         var stack = new StackHandle();
 
-        // Mix the configured opacity into both the outer window and the
-        // inner content child backgrounds — without ChildBg following the
-        // slider the chat log stays opaque inside even when the user
-        // wants to see the game behind it during combat. Form fields and
-        // popups (FrameBg, PopupBg) still stay opaque so input is readable.
         var alphaByte = (uint)Math.Clamp((int)(windowOpacity * 255f), 0x55, 0xFF);
-        var windowBgWithAlpha = (WindowBgRgba & 0xFFFFFF00u) | alphaByte;
-        var childBgWithAlpha = (ChildBgRgba & 0xFFFFFF00u) | alphaByte;
+        var windowBgWithAlpha = (c.WindowBg & 0xFFFFFF00u) | alphaByte;
+        var childBgWithAlpha  = (c.ChildBg  & 0xFFFFFF00u) | alphaByte;
 
-        // Layout — geometric edges, modest rounding, single-pixel borders.
-        stack.PushStyleVar(ImGuiStyleVar.WindowRounding, 4f);
-        stack.PushStyleVar(ImGuiStyleVar.ChildRounding, 3f);
-        stack.PushStyleVar(ImGuiStyleVar.PopupRounding, 3f);
-        stack.PushStyleVar(ImGuiStyleVar.FrameRounding, 2f);
-        stack.PushStyleVar(ImGuiStyleVar.GrabRounding, 2f);
-        stack.PushStyleVar(ImGuiStyleVar.TabRounding, 2f);
-        stack.PushStyleVar(ImGuiStyleVar.ScrollbarRounding, 2f);
-        stack.PushStyleVar(ImGuiStyleVar.WindowBorderSize, 1f);
-        stack.PushStyleVar(ImGuiStyleVar.FrameBorderSize, 1f);
+        // Layout
+        stack.PushStyleVar(ImGuiStyleVar.WindowRounding,    l.WindowRounding);
+        stack.PushStyleVar(ImGuiStyleVar.ChildRounding,     l.ChildRounding);
+        stack.PushStyleVar(ImGuiStyleVar.PopupRounding,     l.PopupRounding);
+        stack.PushStyleVar(ImGuiStyleVar.FrameRounding,     l.FrameRounding);
+        stack.PushStyleVar(ImGuiStyleVar.GrabRounding,      l.GrabRounding);
+        stack.PushStyleVar(ImGuiStyleVar.TabRounding,       l.TabRounding);
+        stack.PushStyleVar(ImGuiStyleVar.ScrollbarRounding, l.ScrollbarRounding);
+        stack.PushStyleVar(ImGuiStyleVar.WindowBorderSize,  l.WindowBorderSize);
+        stack.PushStyleVar(ImGuiStyleVar.FrameBorderSize,   l.FrameBorderSize);
 
-        // Surfaces.
-        stack.PushColor(ImGuiCol.WindowBg, windowBgWithAlpha);
-        stack.PushColor(ImGuiCol.ChildBg, childBgWithAlpha);
-        stack.PushColor(ImGuiCol.PopupBg, PopupBgRgba);
-        stack.PushColor(ImGuiCol.Border, BorderRgba);
-        stack.PushColor(ImGuiCol.BorderShadow, BorderShadowRgba);
+        // Surfaces
+        stack.PushColor(ImGuiCol.WindowBg,    windowBgWithAlpha);
+        stack.PushColor(ImGuiCol.ChildBg,     childBgWithAlpha);
+        stack.PushColor(ImGuiCol.PopupBg,     c.ChildBg);
+        stack.PushColor(ImGuiCol.Border,      c.Border);
+        stack.PushColor(ImGuiCol.BorderShadow, 0u);
 
-        // Frames (input fields, combos, sliders).
-        stack.PushColor(ImGuiCol.FrameBg, FrameBgRgba);
-        stack.PushColor(ImGuiCol.FrameBgHovered, FrameBgHoverRgba);
-        stack.PushColor(ImGuiCol.FrameBgActive, FrameBgActiveRgba);
+        // Frames
+        stack.PushColor(ImGuiCol.FrameBg,        c.FrameBg);
+        stack.PushColor(ImGuiCol.FrameBgHovered, c.SurfaceHover);
+        stack.PushColor(ImGuiCol.FrameBgActive,  c.Surface);
 
-        // Title bars — tertiary identity on active.
-        stack.PushColor(ImGuiCol.TitleBg, TitleBgRgba);
-        stack.PushColor(ImGuiCol.TitleBgActive, TitleBgActiveRgba);
-        stack.PushColor(ImGuiCol.TitleBgCollapsed, TitleBgCollapsedRgba);
+        // Title bars
+        stack.PushColor(ImGuiCol.TitleBg,          c.WindowBg);
+        stack.PushColor(ImGuiCol.TitleBgActive,    c.Identity);
+        stack.PushColor(ImGuiCol.TitleBgCollapsed, c.WindowBg);
 
-        // Buttons — primary cyan.
-        stack.PushColor(ImGuiCol.Button, PrimaryRgba);
-        stack.PushColor(ImGuiCol.ButtonHovered, PrimaryHoverRgba);
-        stack.PushColor(ImGuiCol.ButtonActive, PrimaryActiveRgba);
+        // Buttons
+        stack.PushColor(ImGuiCol.Button,        c.Primary);
+        stack.PushColor(ImGuiCol.ButtonHovered, c.PrimaryLight);
+        stack.PushColor(ImGuiCol.ButtonActive,  c.PrimaryDark);
 
-        // Headers / selectables — slate with subtle steps.
-        stack.PushColor(ImGuiCol.Header, HeaderRgba);
-        stack.PushColor(ImGuiCol.HeaderHovered, HeaderHoverRgba);
-        stack.PushColor(ImGuiCol.HeaderActive, HeaderActiveRgba);
+        // Headers / selectables
+        stack.PushColor(ImGuiCol.Header,        c.Surface);
+        stack.PushColor(ImGuiCol.HeaderHovered, c.SurfaceHover);
+        stack.PushColor(ImGuiCol.HeaderActive,  c.Identity);
 
-        // Tabs — tertiary identity for the active tab.
-        stack.PushColor(ImGuiCol.Tab, TabRgba);
-        stack.PushColor(ImGuiCol.TabHovered, TabHoveredRgba);
-        stack.PushColor(ImGuiCol.TabActive, TabActiveRgba);
-        stack.PushColor(ImGuiCol.TabUnfocused, TabUnfocusedRgba);
-        stack.PushColor(ImGuiCol.TabUnfocusedActive, TabUnfocusedActiveRgba);
+        // Tabs
+        stack.PushColor(ImGuiCol.Tab,                c.FrameBg);
+        stack.PushColor(ImGuiCol.TabHovered,         c.PrimaryLight);
+        stack.PushColor(ImGuiCol.TabActive,          c.Identity);
+        stack.PushColor(ImGuiCol.TabUnfocused,       c.ChildBg);
+        stack.PushColor(ImGuiCol.TabUnfocusedActive, c.PrimaryDark);
 
-        // Scrollbar.
-        stack.PushColor(ImGuiCol.ScrollbarBg, ScrollbarBgRgba);
-        stack.PushColor(ImGuiCol.ScrollbarGrab, ScrollbarGrabRgba);
-        stack.PushColor(ImGuiCol.ScrollbarGrabHovered, ScrollbarGrabHoveredRgba);
-        stack.PushColor(ImGuiCol.ScrollbarGrabActive, ScrollbarGrabActiveRgba);
+        // Scrollbar
+        stack.PushColor(ImGuiCol.ScrollbarBg,          c.WindowBg);
+        stack.PushColor(ImGuiCol.ScrollbarGrab,        c.Surface);
+        stack.PushColor(ImGuiCol.ScrollbarGrabHovered, c.AccentLight);
+        stack.PushColor(ImGuiCol.ScrollbarGrabActive,  c.Accent);
 
-        // Resize grip — secondary amber on active.
-        stack.PushColor(ImGuiCol.ResizeGrip, ResizeGripRgba);
-        stack.PushColor(ImGuiCol.ResizeGripHovered, ResizeGripHoveredRgba);
-        stack.PushColor(ImGuiCol.ResizeGripActive, ResizeGripActiveRgba);
+        // Resize grip
+        stack.PushColor(ImGuiCol.ResizeGrip,        c.FrameBg);
+        stack.PushColor(ImGuiCol.ResizeGripHovered, c.AccentLight);
+        stack.PushColor(ImGuiCol.ResizeGripActive,  c.Accent);
 
-        // Check mark + slider grab — primary cyan.
-        stack.PushColor(ImGuiCol.CheckMark, PrimaryRgba);
-        stack.PushColor(ImGuiCol.SliderGrab, PrimaryRgba);
-        stack.PushColor(ImGuiCol.SliderGrabActive, PrimaryHoverRgba);
+        // Check mark + slider grab
+        stack.PushColor(ImGuiCol.CheckMark,         c.Primary);
+        stack.PushColor(ImGuiCol.SliderGrab,        c.Primary);
+        stack.PushColor(ImGuiCol.SliderGrabActive,  c.PrimaryLight);
 
-        // Separator — primary cyan when hovered/active so the eye
-        // immediately sees that splitters are interactive.
-        stack.PushColor(ImGuiCol.Separator, BorderRgba);
-        stack.PushColor(ImGuiCol.SeparatorHovered, PrimaryHoverRgba);
-        stack.PushColor(ImGuiCol.SeparatorActive, PrimaryRgba);
+        // Separator
+        stack.PushColor(ImGuiCol.Separator,         c.Border);
+        stack.PushColor(ImGuiCol.SeparatorHovered,  c.PrimaryLight);
+        stack.PushColor(ImGuiCol.SeparatorActive,   c.Primary);
 
         return stack;
     }
diff --git a/HellionChat/Ui/Popout.cs b/HellionChat/Ui/Popout.cs
index a3944ff..dc10cd2 100644
--- a/HellionChat/Ui/Popout.cs
+++ b/HellionChat/Ui/Popout.cs
@@ -65,23 +65,12 @@ internal class Popout : Window
         return FrameTime - lastActivityTime <= 1000 * Plugin.Config.InactivityHideTimeout;
     }
 
-    // Tracks the style instance pushed in PreDraw so PostDraw pops the same
-    // one even if config changes mid-frame. See AUDIT-2026-05-05 [CR-UI-5].
-    private StyleModel? _pushedStyle;
-
     public override void PreDraw()
     {
-        _pushedStyle = null;
-        if (Plugin.Config is { OverrideStyle: true, ChosenStyle: not null })
-        {
-            var style = StyleModel.GetConfiguredStyles()?.FirstOrDefault(s => s.Name == Plugin.Config.ChosenStyle);
-            if (style != null)
-            {
-                style.Push();
-                _pushedStyle = style;
-            }
-        }
-
+        // Hellion Chat v1.1.0+ — Theme-Engine ist Source-of-Truth, kein
+        // zusätzlicher Dalamud-StyleModel-Override mehr pro Window. Plugin.Draw
+        // pusht das aktive Hellion-Theme global; Pop-Out zeichnet sich damit
+        // konsistent zum Haupt-Chat-Window.
         Flags = ImGuiWindowFlags.None;
         if (!Plugin.Config.ShowPopOutTitleBar)
             Flags |= ImGuiWindowFlags.NoTitleBar;
@@ -103,9 +92,7 @@ internal class Popout : Window
             }
             else
             {
-                BgAlpha = Plugin.Config.HellionThemeEnabled
-                    ? Plugin.Config.HellionThemeWindowOpacity
-                    : Plugin.Config.WindowAlpha / 100f;
+                BgAlpha = Plugin.Config.WindowOpacity;
             }
         }
     }
@@ -212,12 +199,6 @@ internal class Popout : Window
     {
         if (Idx >= 0 && Idx < ChatLogWindow.PopOutDocked.Count)
             ChatLogWindow.PopOutDocked[Idx] = ImGui.IsWindowDocked();
-
-        if (_pushedStyle != null)
-        {
-            _pushedStyle.Pop();
-            _pushedStyle = null;
-        }
     }
 
     public override void OnClose()
diff --git a/HellionChat/Ui/Settings.cs b/HellionChat/Ui/Settings.cs
index 6abf6a6..2a61094 100755
--- a/HellionChat/Ui/Settings.cs
+++ b/HellionChat/Ui/Settings.cs
@@ -9,13 +9,21 @@ using Dalamud.Bindings.ImGui;
 
 namespace HellionChat.Ui;
 
+internal enum SettingsView
+{
+    Overview,
+    Detail,
+}
+
 public sealed class SettingsWindow : Dalamud.Interface.Windowing.Window
 {
-    private readonly Plugin Plugin;
+    internal readonly Plugin Plugin;
 
     private Configuration Mutable { get; }
     private List<ISettingsTab> Tabs { get; }
     private int CurrentTab;
+    private SettingsView View = SettingsView.Overview;
+    private readonly SettingsOverview Overview;
 
     internal SettingsWindow(Plugin plugin) : base($"{Language.Settings_Title.Format(Plugin.PluginName)}###chat2-settings")
     {
@@ -31,10 +39,13 @@ public sealed class SettingsWindow : Dalamud.Interface.Windowing.Window
         Plugin = plugin;
         Mutable = new Configuration();
 
+        Overview = new SettingsOverview(this);
+
         Tabs =
         [
             new General(Plugin, Mutable),
             new Appearance(Plugin, Mutable),
+            new SettingsTabs.Themes(Plugin, Mutable),
             new SettingsTabs.Window(Plugin, Mutable),
             new Chat(Plugin, Mutable),
             new SettingsTabs.Tabs(Plugin, Mutable),
@@ -72,40 +83,81 @@ public sealed class SettingsWindow : Dalamud.Interface.Windowing.Window
     public override void Draw()
     {
         if (ImGui.IsWindowAppearing())
-            Initialise();
-
-        using (var table = ImRaii.Table("##chat2-settings-table", 2))
         {
-            if (table.Success)
-            {
-                ImGui.TableSetupColumn("tab", ImGuiTableColumnFlags.WidthFixed);
-                ImGui.TableSetupColumn("settings", ImGuiTableColumnFlags.WidthStretch);
-
-                ImGui.TableNextColumn();
-
-                var changed = false;
-                for (var i = 0; i < Tabs.Count; i++)
-                {
-                    if (!ImGui.Selectable($"{Tabs[i].Name}###tab-{i}", CurrentTab == i))
-                        continue;
-
-                    CurrentTab = i;
-                    changed = true;
-                }
-
-                ImGui.TableNextColumn();
-
-                var style = ImGui.GetStyle();
-                var height = ImGui.GetContentRegionAvail().Y - style.FramePadding.Y * 2 - style.ItemSpacing.Y - style.ItemInnerSpacing.Y * 2 - ImGui.CalcTextSize("A").Y;
-
-                using var child = ImRaii.Child("##chat2-settings", new Vector2(-1, height));
-                if (child.Success)
-                    Tabs[CurrentTab].Draw(changed);
-            }
+            Initialise();
+            View = SettingsView.Overview;
         }
 
-        ImGui.Separator();
+        // ESC im Detail-View kehrt zur Overview zurück. Window-Focus-Check ist
+        // Pflicht — sonst triggert ESC auch wenn der User ein anderes Fenster
+        // fokussiert hat und ESC fürs Game-Menü drückt (Codebase-Pattern siehe
+        // Util/SearchSelector.cs:37).
+        if (View == SettingsView.Detail
+            && ImGui.IsWindowFocused(ImGuiFocusedFlags.RootAndChildWindows)
+            && ImGui.IsKeyPressed(ImGuiKey.Escape))
+        {
+            View = SettingsView.Overview;
+            return;
+        }
 
+        if (View == SettingsView.Overview)
+            Overview.Draw();
+        else
+            DrawDetail();
+
+        ImGui.Separator();
+        DrawSaveButtons();
+    }
+
+    internal void OpenSection(int tabIndex)
+    {
+        CurrentTab = tabIndex;
+        View = SettingsView.Detail;
+    }
+
+    internal void OpenOverview()
+    {
+        View = SettingsView.Overview;
+    }
+
+    private void DrawDetail()
+    {
+        // Breadcrumb-Header — Akzent-Cyan, klickbar, führt zurück zur Overview
+        using (ImRaii.PushColor(ImGuiCol.Text, 0xFF00BED2u))
+        using (ImRaii.PushColor(ImGuiCol.Button, 0u))
+        using (ImRaii.PushColor(ImGuiCol.ButtonHovered, 0x33FFFFFFu))
+        using (ImRaii.PushColor(ImGuiCol.ButtonActive, 0x55FFFFFFu))
+        {
+            if (ImGui.SmallButton("← Settings"))
+            {
+                View = SettingsView.Overview;
+                return;
+            }
+        }
+        ImGui.SameLine();
+        ImGui.TextUnformatted("·");
+        ImGui.SameLine();
+        ImGui.TextUnformatted(Tabs[CurrentTab].Name.Split("###")[0]);
+
+        ImGui.Spacing();
+        ImGui.Separator();
+        ImGui.Spacing();
+
+        // Section-Content in voller Breite. Die Tab-Liste links ist überholt:
+        // der User ist bereits über die Card-Übersicht navigiert, eine zweite
+        // Tab-Liste daneben würde nur den Vanilla-Look zurückbringen. Falls
+        // der User in eine andere Section will, geht er zurück zur Overview
+        // (Breadcrumb / ESC).
+        var style = ImGui.GetStyle();
+        var height = ImGui.GetContentRegionAvail().Y - style.FramePadding.Y * 2 - style.ItemSpacing.Y - style.ItemInnerSpacing.Y * 2 - ImGui.CalcTextSize("A").Y;
+
+        using var child = ImRaii.Child("##chat2-settings-detail", new Vector2(-1, height));
+        if (child.Success)
+            Tabs[CurrentTab].Draw(false);
+    }
+
+    private void DrawSaveButtons()
+    {
         var save = ImGui.Button(Language.Settings_Save);
 
         ImGui.SameLine();
diff --git a/HellionChat/Ui/SettingsOverview.cs b/HellionChat/Ui/SettingsOverview.cs
new file mode 100644
index 0000000..b0f8a96
--- /dev/null
+++ b/HellionChat/Ui/SettingsOverview.cs
@@ -0,0 +1,95 @@
+using System.Numerics;
+using Dalamud.Bindings.ImGui;
+using Dalamud.Interface;
+using Dalamud.Interface.Utility.Raii;
+using HellionChat.Resources;
+using HellionChat.Util;
+
+namespace HellionChat.Ui;
+
+internal sealed class SettingsOverview
+{
+    private readonly SettingsWindow _window;
+
+    // Card-Reihenfolge entspricht 1:1 dem Tabs-Index in SettingsWindow.
+    // Themes ist Card-Index 2, eingeschoben zwischen Appearance und Window.
+    private static readonly (FontAwesomeIcon Icon, string TitleKey, string SubtextKey)[] CardDefs =
+    [
+        (FontAwesomeIcon.SlidersH,        "Settings_Card_General_Title",     "Settings_Card_General_Subtext"),
+        (FontAwesomeIcon.Palette,         "Settings_Card_Appearance_Title",  "Settings_Card_Appearance_Subtext"),
+        (FontAwesomeIcon.Swatchbook,      "Settings_Card_Themes_Title",      "Settings_Card_Themes_Subtext"),
+        (FontAwesomeIcon.WindowMaximize,  "Settings_Card_Window_Title",      "Settings_Card_Window_Subtext"),
+        (FontAwesomeIcon.Comments,        "Settings_Card_Chat_Title",        "Settings_Card_Chat_Subtext"),
+        (FontAwesomeIcon.FolderTree,      "Settings_Card_Tabs_Title",        "Settings_Card_Tabs_Subtext"),
+        (FontAwesomeIcon.ShieldAlt,       "Settings_Card_Privacy_Title",     "Settings_Card_Privacy_Subtext"),
+        (FontAwesomeIcon.Database,        "Settings_Card_Database_Title",    "Settings_Card_Database_Subtext"),
+        (FontAwesomeIcon.InfoCircle,      "Settings_Card_Information_Title", "Settings_Card_Information_Subtext"),
+    ];
+
+    public SettingsOverview(SettingsWindow window)
+    {
+        _window = window;
+    }
+
+    public void Draw()
+    {
+        var avail = ImGui.GetContentRegionAvail();
+        var columns = avail.X >= 700f ? 3 : 2;
+        var cardWidth = (avail.X - (columns - 1) * 8f) / columns;
+        var cardHeight = 96f;
+
+        for (var i = 0; i < CardDefs.Length; i++)
+        {
+            var (icon, titleKey, subtextKey) = CardDefs[i];
+            var title = HellionStrings.ResourceManager.GetString(titleKey) ?? titleKey;
+            var subtext = HellionStrings.ResourceManager.GetString(subtextKey) ?? subtextKey;
+            DrawCard(i, icon, title, subtext, cardWidth, cardHeight);
+
+            if ((i + 1) % columns != 0 && i != CardDefs.Length - 1)
+                ImGui.SameLine();
+        }
+    }
+
+    private void DrawCard(int index, FontAwesomeIcon icon, string title, string subtext, float w, float h)
+    {
+        // BeginGroup macht den Card-Bereich zu einem einzelnen ImGui-Layout-Item.
+        // Damit funktioniert SameLine() im Caller-Loop — sonst tracked ImGui die
+        // einzelnen InvisibleButton/Text-Items separat und das Wrapping bricht.
+        ImGui.BeginGroup();
+
+        var cursorBefore = ImGui.GetCursorScreenPos();
+        var clicked = ImGui.InvisibleButton($"##settings-card-{index}", new Vector2(w, h));
+        var hovered = ImGui.IsItemHovered();
+        var bgColor = hovered ? 0xFF22303Fu : 0xFF1A2538u;
+
+        var draw = ImGui.GetWindowDrawList();
+        draw.AddRectFilled(cursorBefore, cursorBefore + new Vector2(w, h), bgColor, 4f);
+
+        // Inhalts-Overlay: Icon + Title + Subtext direkt mit DrawList in den
+        // Card-Bereich zeichnen, statt Cursor-Hopping mit SetCursorScreenPos.
+        // DrawList-Overlays ändern den Cursor nicht, BeginGroup/EndGroup
+        // hält den Layout-Anker stabil für SameLine.
+        var iconPos = cursorBefore + new Vector2(16f, 12f);
+        var titlePos = cursorBefore + new Vector2(16f, 40f);
+        var subtextPos = cursorBefore + new Vector2(16f, 62f);
+
+        var titleColor = ColourUtil.RgbaToAbgr(0xE6F4F1FFu);
+        var subtextColor = ColourUtil.RgbaToAbgr(0x8FA3B5FFu);
+
+        // Icon via FontAwesome — temporär den Font pushen, mit DrawList zeichnen
+        using (_window.Plugin.FontManager.FontAwesome.Push())
+        {
+            draw.AddText(iconPos, titleColor, icon.ToIconString());
+        }
+
+        draw.AddText(titlePos, titleColor, title);
+        draw.AddText(subtextPos, subtextColor, subtext);
+
+        ImGui.EndGroup();
+
+        if (clicked)
+        {
+            _window.OpenSection(index);
+        }
+    }
+}
diff --git a/HellionChat/Ui/SettingsTabs/Appearance.cs b/HellionChat/Ui/SettingsTabs/Appearance.cs
index 6517f74..ce09f4c 100644
--- a/HellionChat/Ui/SettingsTabs/Appearance.cs
+++ b/HellionChat/Ui/SettingsTabs/Appearance.cs
@@ -45,6 +45,13 @@ internal sealed class Appearance : ISettingsTab
 
         using (ImRaii.PushIndent(ImGui.GetStyle().IndentSpacing, false))
         {
+            // v1.1.0 — Diese Settings-UI wird in Phase J durch den dedizierten
+            // Themes-Tab ersetzt. Bis dahin bleiben die alten Toggles erhalten,
+            // damit die Settings-Seite kompiliert; sie schreiben in die mit
+            // [Obsolete] markierten Felder, die bis v1.2.0 als JSON-Safety-Net
+            // bestehen bleiben. Das pragma unterdrückt die CS0612-Warnungen
+            // gezielt für diesen Übergangs-Block.
+#pragma warning disable CS0612, CS0618
             ImGui.Checkbox(HellionStrings.Theme_Enabled_Name, ref Mutable.HellionThemeEnabled);
             ImGuiUtil.HelpMarker(HellionStrings.Theme_Enabled_Description);
 
@@ -81,6 +88,7 @@ internal sealed class Appearance : ISettingsTab
             {
                 ImGuiUtil.DragFloatVertical(Language.Options_WindowOpacity_Name, ref Mutable.WindowAlpha, .25f, 0f, 100f, $"{Mutable.WindowAlpha:N2}%%", ImGuiSliderFlags.AlwaysClamp);
             }
+#pragma warning restore CS0612, CS0618
         }
     }
 
diff --git a/HellionChat/Ui/SettingsTabs/ThemeMockup.cs b/HellionChat/Ui/SettingsTabs/ThemeMockup.cs
new file mode 100644
index 0000000..3fcb382
--- /dev/null
+++ b/HellionChat/Ui/SettingsTabs/ThemeMockup.cs
@@ -0,0 +1,70 @@
+using System.Numerics;
+using Dalamud.Bindings.ImGui;
+using HellionChat.Themes;
+using HellionChat.Util;
+
+namespace HellionChat.Ui.SettingsTabs;
+
+internal static class ThemeMockup
+{
+    // Zeichnet ein Mini-Chat-Window-Mockup mit den Theme-Werten direkt
+    // ins WindowDrawList. Keine Texture, keine Allocation pro Frame —
+    // alles via DrawList.AddRectFilled / AddText.
+    public static void Draw(Vector2 origin, Vector2 size, Theme theme)
+    {
+        var draw = ImGui.GetWindowDrawList();
+        var c = theme.Colors;
+
+        // Window-Bg
+        draw.AddRectFilled(origin, origin + size, ColourUtil.RgbaToAbgr(c.WindowBg | 0xFFu), theme.Layout.WindowRounding);
+
+        // Title-Bar
+        var titleHeight = 14f;
+        draw.AddRectFilled(
+            origin,
+            new Vector2(origin.X + size.X, origin.Y + titleHeight),
+            ColourUtil.RgbaToAbgr(c.Identity), theme.Layout.WindowRounding);
+
+        // Tab-Bar — 3 Mini-Tabs
+        var tabY = origin.Y + titleHeight + 4f;
+        var tabHeight = 12f;
+        for (var i = 0; i < 3; i++)
+        {
+            var tabX = origin.X + 6f + i * 28f;
+            var color = i == 0 ? c.FrameBg : c.ChildBg;
+            draw.AddRectFilled(
+                new Vector2(tabX, tabY),
+                new Vector2(tabX + 26f, tabY + tabHeight),
+                ColourUtil.RgbaToAbgr(color), theme.Layout.TabRounding);
+
+            if (i == 0)  // Active-Pill
+            {
+                draw.AddRectFilled(
+                    new Vector2(tabX, tabY + tabHeight - 2f),
+                    new Vector2(tabX + 26f, tabY + tabHeight),
+                    ColourUtil.RgbaToAbgr(c.Primary));
+            }
+        }
+
+        // Card-Row mit Mock-Sender + Text
+        var rowY = tabY + tabHeight + 6f;
+        var rowHeight = 18f;
+        draw.AddRectFilled(
+            new Vector2(origin.X + 6f, rowY),
+            new Vector2(origin.X + size.X - 6f, rowY + rowHeight),
+            ColourUtil.RgbaToAbgr(c.Surface), 2f);
+
+        // Akzent-Button rechts unten
+        var btnW = 28f;
+        var btnH = 10f;
+        var btnX = origin.X + size.X - btnW - 6f;
+        var btnY = origin.Y + size.Y - btnH - 6f;
+        draw.AddRectFilled(
+            new Vector2(btnX, btnY),
+            new Vector2(btnX + btnW, btnY + btnH),
+            ColourUtil.RgbaToAbgr(c.Accent), theme.Layout.FrameRounding);
+
+        // Border um das gesamte Mockup
+        draw.AddRect(origin, origin + size, ColourUtil.RgbaToAbgr(c.Border), theme.Layout.WindowRounding);
+    }
+}
diff --git a/HellionChat/Ui/SettingsTabs/Themes.cs b/HellionChat/Ui/SettingsTabs/Themes.cs
new file mode 100644
index 0000000..be66c5d
--- /dev/null
+++ b/HellionChat/Ui/SettingsTabs/Themes.cs
@@ -0,0 +1,223 @@
+using System.Numerics;
+using Dalamud.Bindings.ImGui;
+using Dalamud.Interface.Utility.Raii;
+using HellionChat.Resources;
+using HellionChat.Themes;
+using HellionChat.Util;
+
+namespace HellionChat.Ui.SettingsTabs;
+
+internal sealed class Themes : ISettingsTab
+{
+    private readonly Plugin Plugin;
+    private readonly Configuration Mutable;
+
+    // Tracks ob der User die Apply-Frage für das aktive Theme bereits
+    // beantwortet hat. Banner wird nur angezeigt wenn das Theme ein
+    // ChatColors-Set hat UND noch keine Antwort vorliegt UND die aktuellen
+    // Mutable.ChatColours davon abweichen.
+    private string? _applyDismissedFor;
+
+    public string Name => HellionStrings.ResourceManager.GetString("Settings_Tab_Themes") ?? "Themes" + "###tabs-themes";
+
+    internal Themes(Plugin plugin, Configuration mutable)
+    {
+        Plugin = plugin;
+        Mutable = mutable;
+    }
+
+    public void Draw(bool changed)
+    {
+        var registry = Plugin.ThemeRegistry;
+        var active = registry.Get(Mutable.Theme);
+
+        var activeLabelTemplate = HellionStrings.ResourceManager.GetString("Settings_Themes_Active") ?? "Active: {0}";
+        ImGui.TextUnformatted(string.Format(activeLabelTemplate, active.Name));
+        using (ImRaii.PushColor(ImGuiCol.Text, 0xFF8FA3B5u))
+            ImGui.TextUnformatted(active.Author);
+
+        DrawChatColorsApplyBanner(active);
+
+        ImGui.Spacing();
+        ImGui.Separator();
+        ImGui.Spacing();
+
+        var builtInsLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_BuiltIns") ?? "Built-in themes";
+        ImGui.TextUnformatted(builtInsLabel);
+        ImGui.Spacing();
+        DrawThemeGrid(registry.AllBuiltIns(), active.Slug);
+
+        var customs = registry.AllCustom().ToList();
+        if (customs.Count > 0)
+        {
+            ImGui.Spacing();
+            ImGui.Separator();
+            ImGui.Spacing();
+            var customLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_Custom") ?? "Custom themes";
+            ImGui.TextUnformatted(customLabel);
+            ImGui.Spacing();
+            DrawThemeGrid(customs, active.Slug);
+        }
+
+        ImGui.Spacing();
+        ImGui.Separator();
+        ImGui.Spacing();
+
+        var openFolderLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_OpenFolder") ?? "Open themes folder";
+        if (ImGui.Button(openFolderLabel))
+        {
+            var dir = Path.Combine(Plugin.Interface.ConfigDirectory.FullName, "themes");
+            Directory.CreateDirectory(dir);
+            Dalamud.Utility.Util.OpenLink(dir);
+        }
+
+        ImGui.SameLine();
+        var exportLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_ExportActive") ?? "Export active...";
+        if (ImGui.Button(exportLabel))
+        {
+            var dir = Path.Combine(Plugin.Interface.ConfigDirectory.FullName, "themes");
+            Directory.CreateDirectory(dir);
+            var fileName = $"{active.Slug}.export.json";
+            var path = Path.Combine(dir, fileName);
+            var json = ThemeJsonWriter.Serialize(active);
+            File.WriteAllText(path, json);
+            Plugin.Log.Information($"Exported active theme '{active.Slug}' to {path}");
+        }
+    }
+
+    private void DrawThemeGrid(IEnumerable<Theme> themes, string activeSlug)
+    {
+        var avail = ImGui.GetContentRegionAvail();
+        var columns = avail.X >= 700f ? 3 : 2;
+        var cardWidth = (avail.X - (columns - 1) * 8f) / columns;
+        var cardHeight = 140f;  // Mockup + Name + Author brauchen den Platz
+
+        var list = themes.ToList();
+        for (var i = 0; i < list.Count; i++)
+        {
+            DrawThemeCard(list[i], activeSlug, cardWidth, cardHeight);
+
+            // SameLine zwischen den Cards einer Reihe; am Spalten-Ende kein
+            // SameLine, dann beginnt automatisch eine neue Zeile.
+            if ((i + 1) % columns != 0 && i != list.Count - 1)
+                ImGui.SameLine();
+        }
+    }
+
+    private void DrawThemeCard(Theme theme, string activeSlug, float w, float h)
+    {
+        // BeginGroup macht den Card-Bereich zu einem einzelnen ImGui-Layout-Item.
+        // Damit funktioniert SameLine() im Caller-Loop — sonst tracked ImGui die
+        // einzelnen InvisibleButton-Items separat und das Wrapping bricht.
+        ImGui.BeginGroup();
+
+        var isActive = string.Equals(theme.Slug, activeSlug, StringComparison.OrdinalIgnoreCase);
+        var cursorBefore = ImGui.GetCursorScreenPos();
+        var clicked = ImGui.InvisibleButton($"##theme-card-{theme.Slug}", new Vector2(w, h));
+        var hovered = ImGui.IsItemHovered();
+
+        var draw = ImGui.GetWindowDrawList();
+        var bg = ColourUtil.RgbaToAbgr(theme.Colors.WindowBg | 0xFFu);
+        draw.AddRectFilled(cursorBefore, cursorBefore + new Vector2(w, h), bg, 4f);
+
+        if (isActive)
+        {
+            var border = ColourUtil.RgbaToAbgr(theme.Colors.Primary);
+            draw.AddRect(cursorBefore, cursorBefore + new Vector2(w, h), border, 4f, ImDrawFlags.None, 2f);
+        }
+        else if (hovered)
+        {
+            var border = ColourUtil.RgbaToAbgr(theme.Colors.PrimaryLight & 0xFFFFFF99u);
+            draw.AddRect(cursorBefore, cursorBefore + new Vector2(w, h), border, 4f, ImDrawFlags.None, 1f);
+        }
+
+        // Mini-Mockup oben — DrawList-Operation, kein Cursor-Hopping
+        var mockupOrigin = cursorBefore + new Vector2(12f, 12f);
+        var mockupSize = new Vector2(w - 24f, 60f);
+        ThemeMockup.Draw(mockupOrigin, mockupSize, theme);
+
+        // Name + Author direkt via DrawList (statt SetCursorScreenPos +
+        // TextUnformatted), damit der ImGui-Layout-Cursor stabil bleibt
+        // und die BeginGroup/EndGroup-Klammer den Card-Bereich als ein
+        // Layout-Item führt.
+        var textColor = ColourUtil.RgbaToAbgr(theme.Colors.TextPrimary);
+        var mutedColor = ColourUtil.RgbaToAbgr(theme.Colors.TextMuted);
+        draw.AddText(cursorBefore + new Vector2(12f, 80f), textColor, theme.Name);
+        draw.AddText(cursorBefore + new Vector2(12f, 100f), mutedColor, theme.Author);
+
+        ImGui.EndGroup();
+
+        if (clicked)
+        {
+            Mutable.Theme = theme.Slug;
+            Plugin.ThemeRegistry.Switch(theme.Slug);
+            _applyDismissedFor = null;  // Banner für neues Theme wieder zeigen
+        }
+    }
+
+    private void DrawChatColorsApplyBanner(Theme active)
+    {
+        // Klassik hat per Design keine ChatColors — kein Banner.
+        if (active.ChatColors is not { Channels.Count: > 0 } themeChatColors)
+            return;
+
+        // User hat die Frage bereits für genau dieses Theme beantwortet.
+        if (_applyDismissedFor == active.Slug)
+            return;
+
+        // Wenn die aktuellen Channel-Colors bereits exakt mit dem Theme-Vorschlag
+        // übereinstimmen, gibt's nichts zu tun.
+        var alreadyMatching = themeChatColors.Channels.All(kvp =>
+            Mutable.ChatColours.TryGetValue(kvp.Key, out var current) && current == kvp.Value);
+        if (alreadyMatching)
+            return;
+
+        ImGui.Spacing();
+
+        // Dezent-Akzent-Banner mit Border in Theme-Primary
+        var border = ColourUtil.RgbaToAbgr(active.Colors.Primary);
+        var bgFill = ColourUtil.RgbaToAbgr((active.Colors.Surface & 0xFFFFFF00u) | 0xCCu);
+        var origin = ImGui.GetCursorScreenPos();
+        var width = ImGui.GetContentRegionAvail().X;
+        var height = 64f;
+        var draw = ImGui.GetWindowDrawList();
+        draw.AddRectFilled(origin, origin + new Vector2(width, height), bgFill, 4f);
+        draw.AddRect(origin, origin + new Vector2(width, height), border, 4f, ImDrawFlags.None, 1f);
+
+        var hint = HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Hint")
+                   ?? "This theme suggests its own chat channel colours.";
+        var applyLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Apply")
+                         ?? "Apply";
+        var keepLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Keep")
+                        ?? "Keep current";
+
+        var textColor = ColourUtil.RgbaToAbgr(active.Colors.TextPrimary);
+        draw.AddText(origin + new Vector2(12f, 10f), textColor, hint);
+
+        // Buttons als InvisibleButton + DrawList-Overlay, damit sie konsistent
+        // zum Banner-Look bleiben.
+        using (ImRaii.PushColor(ImGuiCol.Button, active.Colors.Primary))
+        using (ImRaii.PushColor(ImGuiCol.ButtonHovered, active.Colors.PrimaryLight))
+        using (ImRaii.PushColor(ImGuiCol.ButtonActive, active.Colors.PrimaryDark))
+        {
+            ImGui.SetCursorScreenPos(origin + new Vector2(12f, 32f));
+            if (ImGui.Button(applyLabel))
+            {
+                foreach (var kvp in themeChatColors.Channels)
+                    Mutable.ChatColours[kvp.Key] = kvp.Value;
+                _applyDismissedFor = active.Slug;
+            }
+        }
+
+        ImGui.SameLine();
+        if (ImGui.Button(keepLabel))
+        {
+            _applyDismissedFor = active.Slug;
+        }
+
+        // Cursor unter den Banner setzen
+        ImGui.SetCursorScreenPos(origin + new Vector2(0f, height + 8f));
+
+        ImGui.Spacing();
+    }
+}
diff --git a/HellionChat/Util/ColourUtil.cs b/HellionChat/Util/ColourUtil.cs
index 63214f0..3373700 100755
--- a/HellionChat/Util/ColourUtil.cs
+++ b/HellionChat/Util/ColourUtil.cs
@@ -62,4 +62,20 @@ internal static class ColourUtil {
 
         return ((uint) a << 24) | ((uint) nb << 16) | ((uint) ng << 8) | nr;
     }
+
+    public static uint HexToRgba(string hex)
+    {
+        ArgumentNullException.ThrowIfNull(hex);
+        var s = hex.StartsWith('#') ? hex[1..] : hex;
+        if (s.Length != 6 && s.Length != 8)
+            throw new FormatException($"Hex colour must be 6 or 8 hex digits, got {s.Length}: '{hex}'");
+
+        if (!uint.TryParse(s, System.Globalization.NumberStyles.HexNumber, System.Globalization.CultureInfo.InvariantCulture, out var value))
+            throw new FormatException($"Hex colour '{hex}' is not a valid hexadecimal value");
+
+        if (s.Length == 6)
+            value = (value << 8) | 0xFFu;  // RRGGBB → RRGGBBFF
+
+        return value;
+    }
 }
diff --git a/HellionChat/images/chatWindow.png b/HellionChat/images/chatWindow.png
index a982c4f..f31a112 100644
Binary files a/HellionChat/images/chatWindow.png and b/HellionChat/images/chatWindow.png differ
diff --git a/HellionChat/images/icon.png b/HellionChat/images/icon.png
index fce75cd..8c2430c 100644
Binary files a/HellionChat/images/icon.png and b/HellionChat/images/icon.png differ
diff --git a/HellionChat/images/settingsOverview.png b/HellionChat/images/settingsOverview.png
new file mode 100644
index 0000000..72f15b7
Binary files /dev/null and b/HellionChat/images/settingsOverview.png differ
diff --git a/HellionChat/images/themesPicker.png b/HellionChat/images/themesPicker.png
new file mode 100644
index 0000000..7842ab3
Binary files /dev/null and b/HellionChat/images/themesPicker.png differ
diff --git a/HellionChat/images/withSimpleTweaks.png b/HellionChat/images/withSimpleTweaks.png
deleted file mode 100644
index 9c15d4d..0000000
Binary files a/HellionChat/images/withSimpleTweaks.png and /dev/null differ
diff --git a/PRIVACY.md b/PRIVACY.md
index e8c2e7a..e52efd4 100644
--- a/PRIVACY.md
+++ b/PRIVACY.md
@@ -12,7 +12,7 @@ because no data ever leaves your machine on the maintainer's
 infrastructure. Independently of that, the plugin is built so that
 you can act on your own data the way the GDPR expects.
 
-Last reviewed: 2026-05-05 (HellionChat v1.0.3).
+Last reviewed: 2026-05-05 (HellionChat v1.1.0).
 
 ---
 
diff --git a/README.md b/README.md
index f6a898b..f257792 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,13 @@ Hellion Chat baut auf [Chat 2](https://github.com/Infiziert90/ChatTwo) von **Inf
 - **Mitgelieferte Hellion-Schrift** (Exo 2, OFL-1.1) als optionaler Default statt System-Font.
 - **Hellion-Logo** im Plugin-Bundle und in der Dalamud-Plugin-Liste.
 
+#### Custom Themes (v1.1.0)
+
+HellionChat 1.1.0 bringt eine Theme-Engine mit fünf eingebauten Themes
+(Hellion Arctic, Chat 2 Klassik, Event Horizon, Moonlit Bloom, Mint Grove)
+und ein JSON-basiertes Authoring-Format für eigene Themes. Schema und
+Schritt-für-Schritt-Anleitung in [`docs/THEME-AUTHORING.md`](docs/THEME-AUTHORING.md).
+
 ### Pop-Out Convenience (v0.6.0)
 
 - **Eingabe-Bar in Pop-Out-Fenstern** als globaler Opt-In in Settings → Fenster → Fenster-Rahmen. Wenn aktiv hat jedes Pop-Out-Window unten einen kompakten Input mit kanal-farbigem Icon-Button und Text-Eingabe — kein Wechsel mehr ins Hauptfenster für eine schnelle Antwort.
@@ -302,6 +309,7 @@ Dokumentation lebt unter [`docs/`](docs/).
 | [`docs/CONTRIBUTORS.md`](docs/CONTRIBUTORS.md) | Tester, Übersetzer und Code-Beiträger der Hellion-Seite. |
 | [`docs/LEARNING-JOURNEY.md`](docs/LEARNING-JOURNEY.md) | Entwicklungsgeschichte, vom Web-Stack zu C# / Dalamud, was ich aus dem Fork gelernt habe. |
 | [`docs/IPC.md`](docs/IPC.md) | IPC-Kanal-Reference, Tuple-Payload-Felder, Migrations-Diff für Drittplugins. |
+| [`docs/THEME-AUTHORING.md`](docs/THEME-AUTHORING.md) | Theme-Engine-Authoring-Guide (EN): JSON-Schema, Color-/Layout-Slots, Channel-Identity-Regeln, Validierung. |
 | [`docs/UPSTREAM_SYNC.md`](docs/UPSTREAM_SYNC.md) | Cherry-Pick-Policy gegenüber Chat 2. |
 | [`docs/THIRD_PARTY_NOTICES.md`](docs/THIRD_PARTY_NOTICES.md) | NuGet-Dependencies mit Lizenzen, Bundled Assets, Network-Status pro Komponente. |
 | [`docs/AI_DISCLOSURE.md`](docs/AI_DISCLOSURE.md) | Offenlegung der KI-Unterstützung im Entwicklungsprozess. |
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 80f1320..7bc1f6b 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -12,6 +12,58 @@ und verlinkt für Details auf die Release-Pages.
 
 ---
 
+## [1.1.0] — 2026-05-05 — Theme Foundation
+
+Erster großer UI-Cycle nach v1.0.0. Theme-Engine, fünf Built-In-Themes,
+Custom-Themes via JSON, Settings-Card-Grid.
+
+### Hinzugefügt
+
+- **Theme-Engine** mit fünf Built-In-Themes: Hellion Arctic (Default),
+  Chat 2 Klassik, Event Horizon, Moonlit Bloom, Mint Grove.
+- **Settings → Themes** mit Mini-Mockup-Preview pro Theme. Klick auf
+  eine Card switcht sofort das ganze Plugin (Chat, Settings, Pop-Out).
+- **Custom-Themes via JSON** in `pluginConfigs/HellionChat/themes/`.
+  Beim ersten Start wird `example-theme.json` als Vorlage abgelegt.
+- **Optional Theme-Chat-Channel-Colors**: Themes können eigene
+  Channel-Farben mitliefern. Beim Switch erscheint ein Banner mit
+  *Übernehmen / Behalten* — nie automatisch.
+- **Settings-Card-Grid**: neue Übersicht beim Öffnen, Card-Klick führt
+  in die Detail-Ansicht der Section. Breadcrumb + ESC führen zurück.
+- **`docs/THEME-AUTHORING.md`** als Anleitung zum Schreiben eigener
+  Themes, mit Hellion-Forge-Branding.
+
+### Geändert
+
+- **Plugin-Icon** auf Hellion Forge Hammer (vorher ChatTwo-Derivat).
+- **Settings-Detail-View** verwendet die volle Breite — die zweite
+  Tab-Liste links ist weg, weil die Card-Übersicht den Wechsel
+  übernimmt.
+- **`HellionStyle.PushGlobal`** ist jetzt theme-driven (`PushGlobal(theme,
+  opacity)`) statt const-palette-driven.
+- **Configuration v13 → v14**: alle User landen auf `hellion-arctic`.
+  Wer den Upstream-Look will, wählt `chat2-classic` in Settings →
+  Themes.
+
+### Veraltet
+
+- `Configuration.HellionThemeEnabled` und `HellionThemeWindowOpacity`
+  bleiben für ein Release lesbar als Safety-Net, werden aber nicht
+  mehr ausgewertet. Entfernung geplant in v1.2.0.
+
+### Sicherheit
+
+- Custom-Theme-JSON-Loader prüft `schemaVersion`, Pflichtfelder und
+  Hex-Format. Ungültige Themes werden mit Warning übersprungen, das
+  Plugin lädt mit Built-Ins weiter.
+
+### Intern
+
+- 51 lokale Unit-Tests (Theme-Records, Registry, JSON-Round-Trip,
+  Sanity pro Built-In-Theme). Tests sind gitignored.
+
+---
+
 ## [1.0.3] — 2026-05-04 — Polish patch
 
 Vier kleine Polish-Items aus dem Backlog gebündelt:
diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index 90756bb..b3b28a6 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -12,22 +12,39 @@ Privacy-First-Schnittmenge des Plugins erweisen.
 
 ---
 
-## Nächster Cycle (v1.1.0)
+## Nächster Cycle (v1.2.0)
+
+**Layout Refresh** — sichtbare Modernisierung des Chat-Windows selbst.
+
+- Top-Tabs-Refresh mit Akzent-Pill-Underline statt Background-Fill
+- Sidebar-Tabs (existing) bekommen Icons + vertikale Pill am Window-Rand
+- Bottom-Status-Bar (Channel-Indikator, Privacy-Badge, Tab-Count,
+  Tells, Version)
+- Card-Rows als Default-Message-Rendering, mit Compact-Density-Toggle
+- Per-Tab Custom-Icons im Tabs-Settings-Dialog
+- Removal des deprecated `HellionThemeEnabled`/`HellionThemeWindowOpacity`
+  Configuration-Felder
+
+Spec liegt in [[Hellion Chat UI Modernisierung Spec]] (Vault).
+
+## v1.1.0 — Theme Foundation (released 2026-05-05)
+
+Theme-Engine mit fünf Built-In-Themes, Settings-Card-Grid, Custom-
+Themes via JSON, Theme-Authoring-Doku. Plugin-Icon auf Hellion Forge.
+Siehe `docs/CHANGELOG.md` für Details.
+
+Aus dem ursprünglichen v1.1.0-Plan (Ad-Block / Spam-Filter, Receive-
+Suppressed-Tells-Toggle) wurden zugunsten der Theme-Engine zurück­
+gestellt — beide Items leben weiter im Mittelfrist-Block.
+
+## Mittelfristig (v1.2.x – v1.3.0)
 
 - **Ad-Block / Spam-Filter** — Hybrid-Konzept aus eigenem Light-Filter und
   optionaler `NoSoliciting`-IPC-Integration. Adressiert Werbe-Spam in
-  öffentlichen Channels und Tells. Größter Block des Cycles.
+  öffentlichen Channels und Tells. Aus dem v1.1.0-Plan zurückgestellt.
 - **Receive-Suppressed-Tells-Toggle** — Auto-Tell-Tabs greift auch wenn ein
   Drittplugin (z.B. XIVMessenger) die /tell-Anzeige global suppressed.
   Gleicher Hook-Layer wie Ad-Block, deshalb gebündelt.
-
-## Mittelfristig (v1.1.x – v1.2.0)
-
-- **Plugin-weite Theme-Varianten** — über die ChatColours-Presets aus v0.6.0
-  hinaus. Mehrere komplette Window-Themes (Frame, Surface, Border, Text)
-  inkl. Farbfamilien mit Helligkeits-Abstufungen. Anknüpfung an
-  Hellion-Online-Media-Brand-Themes (Event Horizon, Night Blue, Indigo Violet
-  und weitere).
 - **Database-Viewer Inline-Search** — Volltext-Suche im DB-Viewer via
   SQLite FTS5. Aktuell gibt es nur Datums- und Channel-Filter.
 - **TempTell Persistence** — Pin-Toggle auf TempTell-Tabs damit ausgewählte
diff --git a/docs/THEME-AUTHORING.md b/docs/THEME-AUTHORING.md
new file mode 100644
index 0000000..0f7376a
--- /dev/null
+++ b/docs/THEME-AUTHORING.md
@@ -0,0 +1,185 @@
+<p align="center">
+  <img src="images/hellion-forge.png" alt="Hellion Forge" width="180" />
+</p>
+
+# Theme Authoring Guide
+
+> Built by **Hellion Forge** — the plugin workshop arm of [Hellion Online Media](https://hellion-media.de). HellionChat ships with five built-in themes; this guide walks you through writing your own.
+
+## TL;DR
+
+1. Open Settings → Themes → **Open themes folder**
+2. Copy `example-theme.json` to `<your-name>.json` in the same folder
+3. Edit the file with any text editor
+4. Reload the plugin (toggle off/on in `/xlplugins`)
+5. Your theme appears in the Custom-Themes section in Settings → Themes
+
+That's the whole loop. The rest of this document is reference.
+
+## File location
+
+```
+%APPDATA%\XIVLauncher\pluginConfigs\HellionChat\themes\
+```
+
+(or the equivalent path on Linux/macOS — Settings → Themes → "Open themes folder" opens it directly).
+
+Each `*.json` file in this folder is loaded as one theme. The `example-theme.json` that HellionChat seeds on first launch is your starting template.
+
+## File format
+
+Theme JSON has four blocks:
+
+```json
+{
+  "schemaVersion": 1,
+  "slug": "your-slug",
+  "name": "Your Theme Name",
+  "author": "You",
+  "description": "One-line description shown under the theme name.",
+  "colors":   { ... 21 color slots ... },
+  "layout":   { ...  9 layout values ... },
+  "chatChannels": { ... optional, channel-name → hex ... }
+}
+```
+
+### Top-level fields
+
+| Field | Type | Required | Notes |
+|---|---|---|---|
+| `schemaVersion` | int | yes | Always `1` for HellionChat 1.1.0. The plugin warns and skips themes with a different number. |
+| `slug` | string | yes | Lowercase, hyphenated. Must be unique across all themes (built-in slugs are reserved). |
+| `name` | string | yes | Display name in the picker. |
+| `author` | string | yes | Shown small under the theme name. |
+| `description` | string | yes | One short sentence. |
+| `colors` | object | yes | All 21 slots required (see below). |
+| `layout` | object | yes | All 9 slots required (see below). |
+| `chatChannels` | object | no | Optional channel-name → hex map (see below). |
+
+### Color slots
+
+All values are 6-digit `#RRGGBB` or 8-digit `#RRGGBBAA` hex strings. Six-digit values get an implicit `FF` alpha.
+
+| Slot | Role |
+|---|---|
+| `primary` | Brand color — used on buttons, sliders, check marks, highlighted separators. |
+| `primaryDark` | Pressed-button stage. |
+| `primaryLight` | Hovered-button / link-text stage. |
+| `primaryGlow` | Glow / subtle accent (typically primary with ~60% alpha). |
+| `accent` | Counter-accent — scrollbar grab on hover/active, resize grip, optional CTA. |
+| `accentDark` / `accentLight` | Dark/light siblings of accent. |
+| `identity` | Title-bar active color and active-tab color. Often equals `primaryDark`. |
+| `windowBg` | Outermost window background. |
+| `childBg` | Inner panel / popup background. |
+| `frameBg` | Input fields, sliders, combos. |
+| `surface` | Card surfaces, headers, selectables. |
+| `surfaceHover` | Hovered card / header step. |
+| `border` | Panel borders. Typically primary with ~40% alpha for a brand-tinted edge. |
+| `textPrimary` | Body text. Soft off-white reads better than pure `#FFFFFF` on dark backgrounds. |
+| `textMuted` | Captions, secondary lines. |
+| `textDim` | Disabled / hint text, separators. |
+| `statusSuccess` | Green-ish for success notifications. |
+| `statusDanger` | Red for errors. |
+| `statusWarning` | Amber for warnings. |
+| `statusInfo` | Cyan-ish info. Often equals primary. |
+
+### Layout slots
+
+All values are floats in pixels. `BorderSize` is 0 or 1 (no thicker borders look right with ImGui's edge anti-aliasing).
+
+| Slot | Typical range | Notes |
+|---|---|---|
+| `windowRounding` | 0–8 | 0 = sharp upstream look; 4–6 = softer "app" feel. |
+| `childRounding` | 0–6 | Usually 1 less than `windowRounding`. |
+| `popupRounding` | 0–6 | Same as `childRounding`. |
+| `frameRounding` | 0–4 | For inputs, sliders. |
+| `grabRounding` | 0–4 | Slider grab dot. |
+| `tabRounding` | 0–4 | Tab corners. |
+| `scrollbarRounding` | 0–4 | Scrollbar grab. |
+| `windowBorderSize` | 0 or 1 | 1 reads better in dark themes. |
+| `frameBorderSize` | 0 or 1 | Usually matches windowBorderSize. |
+
+### Optional `chatChannels`
+
+If present, your theme proposes its own chat-channel colors. Property names are `ChatType` enum values (case-insensitive). Unknown names are skipped silently — safe for forward-compat.
+
+```json
+"chatChannels": {
+  "Say":             "#FFFFFF",
+  "Yell":            "#FFE066",
+  "Shout":           "#FFA040",
+  "TellIncoming":    "#FF99CC",
+  "TellOutgoing":    "#FF99CC",
+  "Party":           "#80C0E8",
+  "FreeCompany":     "#4DD9E8",
+  "NoviceNetwork":   "#A8E060",
+  "Linkshell1":      "#A8E060"
+}
+```
+
+The user is asked **once per theme switch** whether to apply these colors — never auto-overwriting existing picks. The banner shows up only if your suggested colors differ from the user's current `Configuration.ChatColours`.
+
+#### Channel-identity rule
+
+**Don't break FFXIV channel identity.** Players have used these conventions for over a decade:
+
+| Channel | Convention | Why |
+|---|---|---|
+| Say | white / off-white | Default-readable speech. |
+| Yell | yellow | Urgent broadcast. |
+| Shout | orange | Local urgent. |
+| Tell | pink-magenta | Whisper, must stand out. |
+| Party | light blue | Group ops. |
+| FreeCompany | cyan-teal | Guild ops. |
+| NoviceNetwork | lime-green | Mentor channel. |
+
+A theme can tint these toward its brand family (e.g., a purple theme can shift Tell from `#FF99CC` to `#E090FF`), but **don't** flip them (Tell suddenly green, Yell suddenly cyan). RP groups and combat-spec setups depend on the visual hierarchy.
+
+The four colored built-in themes (Hellion Arctic, Event Horizon, Moonlit Bloom, Mint Grove) all follow this rule — read their JSON for reference. Chat 2 Klassik intentionally ships without `chatChannels` so the user keeps their existing picks.
+
+## Theme families
+
+Naming convention `<color>-<modifier>` is recommended for theme families. The first member of a family is the lightest/brightest:
+
+- `mint-grove` (current built-in, light mint)
+- `forest-grove` (planned, dark emerald)
+- `moss-grove` (planned, mid muted)
+
+Code-wise families have no special handling — only the slug naming hints at the relationship. The picker may group families later, but that's not required.
+
+## Validation and errors
+
+When HellionChat loads your theme:
+
+- **Schema mismatch** (`schemaVersion != 1`): theme is skipped, warning written to `/xllog`.
+- **Missing required field** (e.g., no `slug`): theme is skipped, warning written.
+- **Invalid hex** (e.g., `#GGHHII`): theme is skipped, warning written.
+- **Unknown channel name** in `chatChannels`: that one channel is skipped silently, the rest of the theme loads normally.
+
+Check `/xllog` after a plugin reload to see what loaded and what didn't.
+
+## Testing your theme
+
+1. Edit the JSON, save the file.
+2. Reload the plugin: `/xlplugins` → toggle HellionChat off, then on.
+3. Settings → Themes → click your theme card.
+4. Watch every plugin window (chat, settings, pop-out) and pick something to fix.
+5. Tweak. Reload. Repeat.
+
+Tip: the **Settings → Themes** picker shows a mini-mockup per theme — your colors are visible before you switch.
+
+## Sharing themes
+
+Themes are JSON, so sharing is just a file. Drop it into someone's `pluginConfigs/HellionChat/themes/` folder and their plugin picks it up on next reload.
+
+A community theme repository is on the Hellion Forge roadmap. Until then: share via Discord or any pastebin.
+
+## Reference
+
+- `docs/example-theme.json` (seeded automatically on first launch into `pluginConfigs/HellionChat/themes/`) — minimal valid theme.
+- The five built-in themes live in source under `HellionChat/Themes/Builtin/`. They are a good reference for Color choices that work.
+- [Hellion Online Media branding](https://hellion-media.de) — the Arctic Cyan + Ember Glow palette that drives the default Hellion Arctic theme.
+
+---
+
+<p align="center"><sub>HellionChat is a privacy-focused fork of <a href="https://github.com/Infiziert90/ChatTwo">Chat 2</a>, distributed under the EUPL-1.2.<br/>Theme engine and authoring guide are part of <strong>Hellion Forge</strong>.</sub></p>
diff --git a/docs/THIRD_PARTY_NOTICES.md b/docs/THIRD_PARTY_NOTICES.md
index 81790bb..5a79c65 100644
--- a/docs/THIRD_PARTY_NOTICES.md
+++ b/docs/THIRD_PARTY_NOTICES.md
@@ -4,13 +4,13 @@ HellionChat ships and depends on a number of third-party components.
 This document lists them, their licences and which of them touch the
 network. It is the inventory referenced by `PRIVACY.md`.
 
-Last reviewed: 2026-05-05 (HellionChat v1.0.3).
+Last reviewed: 2026-05-05 (HellionChat v1.1.0).
 
 ---
 
 ## Direct NuGet dependencies
 
-Pinned in `HellionChat/HellionChat.csproj`. Versions reflect the v1.0.3 build.
+Pinned in `HellionChat/HellionChat.csproj`. Versions reflect the v1.1.0 build.
 
 | Package | Version | Licence | Network | Purpose |
 | --- | --- | --- | --- | --- |
diff --git a/docs/images/hellion-forge.png b/docs/images/hellion-forge.png
new file mode 100644
index 0000000..f4b169b
Binary files /dev/null and b/docs/images/hellion-forge.png differ
diff --git a/repo.json b/repo.json
index 7c255a6..8129da2 100644
--- a/repo.json
+++ b/repo.json
@@ -3,8 +3,8 @@
     "Author": "JonKazama-Hellion",
     "Name": "Hellion Chat",
     "InternalName": "HellionChat",
-    "AssemblyVersion": "1.0.3.0",
-    "Description": "Hellion Chat is a privacy-focused chat replacement for FINAL FANTASY XIV based on the Chat 2 codebase (EUPL-1.2). One feature is intentionally removed (the optional webinterface) and a stack of privacy controls is added on top. Tabs, channel filters, RGB colours, emotes, screenshot mode, IPC integration and the chat replacement window itself work the same. The webinterface is intentionally not part of Hellion Chat because it serves a different use case from the smaller default footprint this plugin is built around.\n\nOn top of that, Hellion Chat adds privacy and data-handling controls designed to align with the modern data protection rules that apply across the EU, the United States and Japan. By default only your own conversations are stored; messages from strangers, NPCs and system spam stay out of the database. Retention windows are configurable per channel, history can be wiped retroactively, and stored data can be exported on demand.\n\nKey privacy and data-handling features:\n\n- Channel whitelist with a Privacy-First default\n- Per-channel retention with a daily background sweep\n- Retroactive cleanup with a Ctrl+Shift confirm\n- Export to Markdown, JSON or CSV\n- First-run wizard with three preset profiles (Privacy-First, Casual, Full History)\n- Bilingual UI (English and German) with live language switching\n- Independent plugin state — own config file and database directory, so Hellion Chat does not share state with upstream Chat 2\n\nBased on Chat 2 by Infi and Anna, licensed under EUPL-1.2.\n\nModding & support: join the Hellion Forge Discord at https://discord.gg/X9V7Kcv5gR — community for Hellion Chat and other Hellion Online Media plugins/tools.",
+    "AssemblyVersion": "1.1.0.0",
+    "Description": "Hellion Chat is a privacy-focused chat replacement for FINAL FANTASY XIV based on the Chat 2 codebase (EUPL-1.2). One feature is intentionally removed (the optional webinterface) and a stack of privacy controls is added on top. Tabs, channel filters, RGB colours, emotes, screenshot mode, IPC integration and the chat replacement window itself work the same. The webinterface is intentionally not part of Hellion Chat because it serves a different use case from the smaller default footprint this plugin is built around.\n\nOn top of that, Hellion Chat adds privacy and data-handling controls designed to align with the modern data protection rules that apply across the EU, the United States and Japan. By default only your own conversations are stored; messages from strangers, NPCs and system spam stay out of the database. Retention windows are configurable per channel, history can be wiped retroactively, and stored data can be exported on demand.\n\nKey privacy and data-handling features:\n\n- Channel whitelist with a Privacy-First default\n- Per-channel retention with a daily background sweep\n- Retroactive cleanup with a Ctrl+Shift confirm\n- Export to Markdown, JSON or CSV\n- First-run wizard with three preset profiles (Privacy-First, Casual, Full History)\n- Bilingual UI (English and German) with live language switching\n- Independent plugin state — own config file and database directory, so Hellion Chat does not share state with upstream Chat 2\n\nv1.1.0 — Theme engine with five built-in themes (Hellion Arctic, Chat 2 Klassik, Event Horizon, Moonlit Bloom, Mint Grove) plus JSON-based custom-theme authoring. Settings rebuilt around a card grid with section detail views. See docs/THEME-AUTHORING.md.\n\nBased on Chat 2 by Infi and Anna, licensed under EUPL-1.2.\n\nModding & support: join the Hellion Forge Discord at https://discord.gg/X9V7Kcv5gR — community for Hellion Chat and other Hellion Online Media plugins/tools.",
     "ApplicableVersion": "any",
     "RepoUrl": "https://github.com/JonKazama-Hellion/HellionChat",
     "Tags": [
@@ -20,16 +20,17 @@
     "CanUnloadAsync": false,
     "LoadPriority": 0,
     "Punchline": "Chat replacement with privacy controls aligned to EU, US and JP rules — based on Chat 2 (EUPL-1.2)",
-    "Changelog": "**Hellion Chat 1.0.3 — Polish patch**\n\n- New: optionally hide chat (and every other plugin window) while the New Game+ menu is open. Toggle in Settings → Window → Frame, default off. Closing the menu restores all windows.\n- New: optionally tint the channel selector button next to the input field with the currently active channel's colour. Toggle in Settings → Appearance → Colours, default on. Matches the existing input-text tint and respects ExtraChat overrides.\n- Fix: status, item and other inline hover icons keep their original aspect ratio. Debuff icons with non-square dimensions are no longer visually squished into a 32×32 box.\n- Diagnostic: hide-state transitions (battle, cutscene, user-hide, cutscene override) are now logged on Verbose level for easier bug reports — off by default, enable with `/xllog set HellionChat verbose`.\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 1.0.1 — Window Position Recovery**\n\n- Automatic bounds check on the first draw after plugin load. When the persisted window position has no overlap with the primary viewport, the window snaps to a safe top-left default. Helpful after a monitor disconnect, resolution change or multi-monitor layout switch between sessions.\n- New \"Reset Window Position\" button in Settings → Window → Frame as a manual escape hatch for edge cases the automatic check doesn't catch.\n\nTested on Linux/Wayland with a hard-cut three-monitor reduction; window recovers cleanly without manual JSON editing.\n\nHousekeeping carried over since v1.0.0:\n\n- Documentation restructured into docs/ folder. New CHANGELOG, CONTRIBUTORS, LEARNING-JOURNEY and ROADMAP added\n- Stale ChatTwo/* paths in repo configs updated to HellionChat/*\n- Pidgin parser library bumped from 3.3.0 to 3.5.1 (CIString Unicode fix relevant for non-ASCII channel/tab names)\n- GitHub Actions: actions/setup-dotnet bumped 4 → 5, github/codeql-action bumped 3 → 4\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 1.0.0 — Standalone Major Release**\n\nFirst fully standalone release. Internal cleanup plus a sweep of\npre-existing correctness, security, threading and resource-leak\nfixes carried over from the upstream codebase. No user action\nrequired — auto-update applies cleanly, configuration and database\npaths unchanged.\n\nStandalone identity:\n\n- Code namespace consolidated from ChatTwo.* to HellionChat.* across\n  all source files\n- IPC channels migrated from ChatTwo.* to HellionChat.* (6 channels:\n  Register, Available, Unregister, Invoke, GetChatInputState,\n  ChatInputStateChanged) — third-party plugins that bound to the old\n  channels need to be updated; none known at release time\n- ImGui popup ID renamed to hellionchat-context-popup\n- Repository folder restructured (ChatTwo/ → HellionChat/), all CI\n  and build paths updated accordingly\n- Public-facing descriptions reworded from upstream-fork framing to\n  standalone framing (Chat 2 attribution preserved per EUPL-1.2)\n- Colour preset 'ChatTwo Default' is now 'Klassik (Chat 2 Default)'\n\nSafety:\n\n- Plugin now refuses to load when upstream Chat 2 is also active —\n  bilingual conflict message in EN/DE, throw before any subsystem\n  initialization, prevents the runtime crash that previously occurred\n  when both plugins replaced the same chat window in parallel\n- SQLite native binary bumped to 3.50.3 (CVE-2025-6965 memory\n  corruption from aggregate-term overflow, CVE-2025-7709)\n- NuGet restore now honors packages.lock.json so transitive\n  dependencies don't drift between machines or CI runs\n\nDefault tab layout sharpened (one-time tab reset on first start):\n\nThe first-run tab layout is reorganized into five thematic tabs\nbased on external tester feedback. General contains only Say,\nYell and Shout (immediate-surroundings public chat). System\nabsorbs the gameplay-event streams (NpcDialogue, Loot, Crafting,\nGathering, PF recruitment pings) and announcement noise\n(BattleSystem, FreeCompanyAnnouncement, PvpTeamAnnouncement)\nthat previously lived in General. FreeCompany, Group and\nLinkshell each own their channel set. The static Tell tab is\ngone — Auto-Tell-Tabs spawns per-conversation tabs on demand.\nThe Beginner / Novice-Network preset is no longer added by\ndefault but is still available via Settings, Tabs.\n\nThis is a one-time tab-layout reset for users on config version\n12 or older. Privacy, Retention, Theme and every other setting\nis preserved. Your previous tab configuration is written to\npluginConfigs/HellionChat.json.pre-v13-backup so you can restore\nit manually if you prefer the old layout.\n\nCrash-class fixes (formerly latent in upstream):\n\n- MathUtil.HasOverlap now uses a correct AABB test; identical or\n  edge-touching rectangles are no longer reported as non-overlapping\n- ChatCode.Equals compares fields directly instead of GetHashCode;\n  removes the hash-collision anti-pattern\n- IpcManager.Dispose uses UnregisterAction to match the matching\n  RegisterAction call; previous mismatch leaked the action\n  subscription on every plugin reload\n- ExtraChat.Dispose now unsubscribes all three IPC subscriptions\n  (was only the first); leaks closed\n- TellTarget.FromTarget guards against a zero IPlayerCharacter.Address\n  before dereferencing the unsafe Character* cast\n- GameFunctions ResolveTextCommandPlaceholderDetour null-checks the\n  Hook reference instead of using the null-forgiving operator\n- Popout.cs and SettingsTabs/Tabs.cs bounds-check list indexing so\n  a tab drop or empty-worlds list no longer crashes the UI\n- Debugger.cs now declares IDisposable so the existing Dispose runs\n\nCorrectness fixes:\n\n- GlobalParametersCache.GetValue captures Cache into a local before\n  the bounds check, so a concurrent Refresh can't slip a different\n  array between check and read\n- IconUtil binary search bounds initialized to entries.Length-1 and\n  reset on redirect-restart; entries.Length==0 short-circuits\n- Sheets.WorldsOnDatacenter now compares DataCenter.RowId (was\n  Region.RowId) so it actually returns same-DC worlds\n- Message.cs back-reference loop iterates the processed Sender/Content\n  properties so chunks added by CheckMessageContent get Message set\n- Language.zh-Hans Webinterface_Start_Success corrected to\n  \"网页界面已启动\" (was \"网页界面已停止\")\n\nThreading and async:\n\n- AutoTranslate Entries/ValidEntries are now serialized behind a\n  single lock; the preload worker thread and main thread no longer\n  race on the underlying dictionary/hash set\n- Privacy retention and cleanup workers bound their framework-refresh\n  waits to 5 seconds with a logged timeout; a hung framework tick can\n  no longer deadlock the background worker\n\nResource handling:\n\n- EmoteCache reuses the static HttpClient instead of allocating a new\n  one per call (closed socket leak)\n- FontManager wraps HttpClient/HttpResponseMessage in using-blocks\n  and adds EnsureSuccessStatusCode; failed downloads no longer\n  silently produce a zero-byte font file\n- SearchSelector mixes the row index into the ImGui ID stack so\n  selectables don't collapse to a single ambiguous ID\n- SettingsTabs/Chat blocked-emote add-button now opens its selector\n  popup on left-click\n\nPerformance:\n\n- DbViewer text export caches filteredHistory.Count once instead of\n  re-enumerating the IEnumerable on every batch (O(N) instead of\n  O(N²) on large histories)\n\nLicense attribution (NOTICE.md, COPYRIGHT, THIRD_PARTY_NOTICES.md\nand the Credits section in README) is unchanged.\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 0.6.1 — Pop-Out Discoverability & /tell Auto-Pop-Out**\n\n- Pop-out button now visible in the chat header (no more hunting through the right-click menu)\n- One-time hint banner explains pop-out tabs and the right-click shortcut\n- New setting: open new /tell tabs directly as pop-out windows (Settings → Chat → Auto-Tell-Tabs)\n- Pop-out input is now enabled by default — closing a pop-out still returns the tab to the sidebar\n- Bugfix: dropping or logging out with an LRU/popped auto-tell tab now also closes its pop-out window (no more ghost windows)\n- Bugfix: dead zone below the chat input bar when the v0.6.0 pop-out hint banner was visible (also fixed retroactively for the v0.6.0 banner inside pop-outs)\n\nModding & support: join Hellion Forge — https://discord.gg/X9V7Kcv5gR\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n---\n\nEarlier history: https://github.com/JonKazama-Hellion/HellionChat/releases",
+    "Changelog": "**Hellion Chat 1.1.0 — Theme Foundation**\n\nFirst major UI cycle after the standalone v1.0.0 cut. Theme engine, five built-in themes, customisable JSON themes, modernised settings layout.\n\nNew themes (Settings → Themes):\n\n- **Hellion Arctic** — the brand default, Arctic Cyan + Ember Glow on industrial slate.\n- **Chat 2 Klassik** — Steel Blue on neutral grey, eckige Kanten. The upstream Chat 2 look on the new engine.\n- **Event Horizon** — Cosmic Purple on near-black. Deep-space mood.\n- **Moonlit Bloom** — Bloom Magenta + Soft Sage on deep-violet night.\n- **Mint Grove** — Mint Green + Honey Amber on deep forest. First member of the Grove family.\n\nTheme engine highlights:\n\n- Slug-based selection in Settings → Themes with mini-mockup previews per theme.\n- Click a theme card and the whole plugin (chat, settings, pop-outs, viewer) repaints instantly.\n- Custom themes via JSON in pluginConfigs/HellionChat/themes/. Example template seeded on first launch.\n- Optional per-theme chat-channel colours. When a theme proposes its own chat colours and yours differ, a dezent banner offers Apply / Keep — never auto-overwriting.\n- Migration v13 → v14: existing users land on Hellion Arctic. Pick Chat 2 Klassik to keep the upstream look.\n\nSettings layout:\n\n- New card-grid overview on Settings open. Click a card to drill into the section.\n- Breadcrumb back to overview, ESC also returns.\n- Detail view drops the redundant tab list — section content uses the full width.\n\nBranding:\n\n- Plugin icon swapped from the ChatTwo derivative to the Hellion Forge hammer.\n- New docs/THEME-AUTHORING.md walks you through writing your own themes with the Forge logo on top.\n\nTechnical:\n\n- HellionStyle.PushGlobal is now theme-driven. Configuration.HellionThemeEnabled is deprecated and will be removed in v1.2.0.\n- New ThemeRegistry singleton with LastWriteTime-cached custom-theme loader.\n- 51 local unit tests cover the data model, registry, JSON round-trip and built-in sanity checks.\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 1.0.3 — Polish patch**\n\n- New: optionally hide chat (and every other plugin window) while the New Game+ menu is open. Toggle in Settings → Window → Frame, default off. Closing the menu restores all windows.\n- New: optionally tint the channel selector button next to the input field with the currently active channel's colour. Toggle in Settings → Appearance → Colours, default on. Matches the existing input-text tint and respects ExtraChat overrides.\n- Fix: status, item and other inline hover icons keep their original aspect ratio. Debuff icons with non-square dimensions are no longer visually squished into a 32×32 box.\n- Diagnostic: hide-state transitions (battle, cutscene, user-hide, cutscene override) are now logged on Verbose level for easier bug reports — off by default, enable with `/xllog set HellionChat verbose`.\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 1.0.1 — Window Position Recovery**\n\n- Automatic bounds check on the first draw after plugin load. When the persisted window position has no overlap with the primary viewport, the window snaps to a safe top-left default. Helpful after a monitor disconnect, resolution change or multi-monitor layout switch between sessions.\n- New \"Reset Window Position\" button in Settings → Window → Frame as a manual escape hatch for edge cases the automatic check doesn't catch.\n\nTested on Linux/Wayland with a hard-cut three-monitor reduction; window recovers cleanly without manual JSON editing.\n\nHousekeeping carried over since v1.0.0:\n\n- Documentation restructured into docs/ folder. New CHANGELOG, CONTRIBUTORS, LEARNING-JOURNEY and ROADMAP added\n- Stale ChatTwo/* paths in repo configs updated to HellionChat/*\n- Pidgin parser library bumped from 3.3.0 to 3.5.1 (CIString Unicode fix relevant for non-ASCII channel/tab names)\n- GitHub Actions: actions/setup-dotnet bumped 4 → 5, github/codeql-action bumped 3 → 4\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 1.0.0 — Standalone Major Release**\n\nFirst fully standalone release. Internal cleanup plus a sweep of\npre-existing correctness, security, threading and resource-leak\nfixes carried over from the upstream codebase. No user action\nrequired — auto-update applies cleanly, configuration and database\npaths unchanged.\n\nStandalone identity:\n\n- Code namespace consolidated from ChatTwo.* to HellionChat.* across\n  all source files\n- IPC channels migrated from ChatTwo.* to HellionChat.* (6 channels:\n  Register, Available, Unregister, Invoke, GetChatInputState,\n  ChatInputStateChanged) — third-party plugins that bound to the old\n  channels need to be updated; none known at release time\n- ImGui popup ID renamed to hellionchat-context-popup\n- Repository folder restructured (ChatTwo/ → HellionChat/), all CI\n  and build paths updated accordingly\n- Public-facing descriptions reworded from upstream-fork framing to\n  standalone framing (Chat 2 attribution preserved per EUPL-1.2)\n- Colour preset 'ChatTwo Default' is now 'Klassik (Chat 2 Default)'\n\nSafety:\n\n- Plugin now refuses to load when upstream Chat 2 is also active —\n  bilingual conflict message in EN/DE, throw before any subsystem\n  initialization, prevents the runtime crash that previously occurred\n  when both plugins replaced the same chat window in parallel\n- SQLite native binary bumped to 3.50.3 (CVE-2025-6965 memory\n  corruption from aggregate-term overflow, CVE-2025-7709)\n- NuGet restore now honors packages.lock.json so transitive\n  dependencies don't drift between machines or CI runs\n\nDefault tab layout sharpened (one-time tab reset on first start):\n\nThe first-run tab layout is reorganized into five thematic tabs\nbased on external tester feedback. General contains only Say,\nYell and Shout (immediate-surroundings public chat). System\nabsorbs the gameplay-event streams (NpcDialogue, Loot, Crafting,\nGathering, PF recruitment pings) and announcement noise\n(BattleSystem, FreeCompanyAnnouncement, PvpTeamAnnouncement)\nthat previously lived in General. FreeCompany, Group and\nLinkshell each own their channel set. The static Tell tab is\ngone — Auto-Tell-Tabs spawns per-conversation tabs on demand.\nThe Beginner / Novice-Network preset is no longer added by\ndefault but is still available via Settings, Tabs.\n\nThis is a one-time tab-layout reset for users on config version\n12 or older. Privacy, Retention, Theme and every other setting\nis preserved. Your previous tab configuration is written to\npluginConfigs/HellionChat.json.pre-v13-backup so you can restore\nit manually if you prefer the old layout.\n\nCrash-class fixes (formerly latent in upstream):\n\n- MathUtil.HasOverlap now uses a correct AABB test; identical or\n  edge-touching rectangles are no longer reported as non-overlapping\n- ChatCode.Equals compares fields directly instead of GetHashCode;\n  removes the hash-collision anti-pattern\n- IpcManager.Dispose uses UnregisterAction to match the matching\n  RegisterAction call; previous mismatch leaked the action\n  subscription on every plugin reload\n- ExtraChat.Dispose now unsubscribes all three IPC subscriptions\n  (was only the first); leaks closed\n- TellTarget.FromTarget guards against a zero IPlayerCharacter.Address\n  before dereferencing the unsafe Character* cast\n- GameFunctions ResolveTextCommandPlaceholderDetour null-checks the\n  Hook reference instead of using the null-forgiving operator\n- Popout.cs and SettingsTabs/Tabs.cs bounds-check list indexing so\n  a tab drop or empty-worlds list no longer crashes the UI\n- Debugger.cs now declares IDisposable so the existing Dispose runs\n\nCorrectness fixes:\n\n- GlobalParametersCache.GetValue captures Cache into a local before\n  the bounds check, so a concurrent Refresh can't slip a different\n  array between check and read\n- IconUtil binary search bounds initialized to entries.Length-1 and\n  reset on redirect-restart; entries.Length==0 short-circuits\n- Sheets.WorldsOnDatacenter now compares DataCenter.RowId (was\n  Region.RowId) so it actually returns same-DC worlds\n- Message.cs back-reference loop iterates the processed Sender/Content\n  properties so chunks added by CheckMessageContent get Message set\n- Language.zh-Hans Webinterface_Start_Success corrected to\n  \"网页界面已启动\" (was \"网页界面已停止\")\n\nThreading and async:\n\n- AutoTranslate Entries/ValidEntries are now serialized behind a\n  single lock; the preload worker thread and main thread no longer\n  race on the underlying dictionary/hash set\n- Privacy retention and cleanup workers bound their framework-refresh\n  waits to 5 seconds with a logged timeout; a hung framework tick can\n  no longer deadlock the background worker\n\nResource handling:\n\n- EmoteCache reuses the static HttpClient instead of allocating a new\n  one per call (closed socket leak)\n- FontManager wraps HttpClient/HttpResponseMessage in using-blocks\n  and adds EnsureSuccessStatusCode; failed downloads no longer\n  silently produce a zero-byte font file\n- SearchSelector mixes the row index into the ImGui ID stack so\n  selectables don't collapse to a single ambiguous ID\n- SettingsTabs/Chat blocked-emote add-button now opens its selector\n  popup on left-click\n\nPerformance:\n\n- DbViewer text export caches filteredHistory.Count once instead of\n  re-enumerating the IEnumerable on every batch (O(N) instead of\n  O(N²) on large histories)\n\nLicense attribution (NOTICE.md, COPYRIGHT, THIRD_PARTY_NOTICES.md\nand the Credits section in README) is unchanged.\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 0.6.1 — Pop-Out Discoverability & /tell Auto-Pop-Out**\n\n- Pop-out button now visible in the chat header (no more hunting through the right-click menu)\n- One-time hint banner explains pop-out tabs and the right-click shortcut\n- New setting: open new /tell tabs directly as pop-out windows (Settings → Chat → Auto-Tell-Tabs)\n- Pop-out input is now enabled by default — closing a pop-out still returns the tab to the sidebar\n- Bugfix: dropping or logging out with an LRU/popped auto-tell tab now also closes its pop-out window (no more ghost windows)\n- Bugfix: dead zone below the chat input bar when the v0.6.0 pop-out hint banner was visible (also fixed retroactively for the v0.6.0 banner inside pop-outs)\n\nModding & support: join Hellion Forge — https://discord.gg/X9V7Kcv5gR\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n---\n\nEarlier history: https://github.com/JonKazama-Hellion/HellionChat/releases",
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