diff --git a/src/AcDream.UI.Abstractions/Panels/Chat/ChatPanel.cs b/src/AcDream.UI.Abstractions/Panels/Chat/ChatPanel.cs
index 28e035b..c8ece99 100644
--- a/src/AcDream.UI.Abstractions/Panels/Chat/ChatPanel.cs
+++ b/src/AcDream.UI.Abstractions/Panels/Chat/ChatPanel.cs
@@ -90,6 +90,20 @@ public sealed class ChatPanel : IPanel
             return;
         }
 
+        // L.0 follow-up: wrap the entire chat panel body in a single
+        // outer BeginChild so empty-space clicks anywhere in the body
+        // (Checkbox row, between Separator and input, etc.) are
+        // absorbed by BeginChild's drag-trap (an InvisibleButton the
+        // ImGui renderer adds inside every BeginChild). Without this
+        // wrapper the chat panel was draggable from any empty body
+        // pixel — only the inner ##chattail area was protected.
+        if (!renderer.BeginChild("##chatbody", new System.Numerics.Vector2(0f, 0f)))
+        {
+            renderer.EndChild();
+            renderer.End();
+            return;
+        }
+
         // L.0 follow-up: top-of-panel "Copy mode" toggle. When on, the
         // chat tail rendering swaps to TextMultilineReadOnly so the
         // user can mark + Ctrl+C any text. Off (default) preserves the
@@ -186,6 +200,7 @@ public sealed class ChatPanel : IPanel
             if (TryHandleClientCommand(trimmed))
             {
                 _input = string.Empty;
+                renderer.EndChild(); // outer ##chatbody
                 renderer.End();
                 return;
             }
@@ -206,6 +221,7 @@ public sealed class ChatPanel : IPanel
                     _vm.ShowSystemMessage(
                         $"Unknown command: {verb}. Type /help for the list of supported commands.");
                     _input = string.Empty;
+                    renderer.EndChild(); // outer ##chatbody
                     renderer.End();
                     return;
                 }
@@ -225,6 +241,7 @@ public sealed class ChatPanel : IPanel
             _input = string.Empty;
         }
 
+        renderer.EndChild(); // outer ##chatbody
         renderer.End();
     }
 
diff --git a/tests/AcDream.UI.Abstractions.Tests/Panels/Chat/ChatPanelLayoutTests.cs b/tests/AcDream.UI.Abstractions.Tests/Panels/Chat/ChatPanelLayoutTests.cs
index 0e80233..28813d3 100644
--- a/tests/AcDream.UI.Abstractions.Tests/Panels/Chat/ChatPanelLayoutTests.cs
+++ b/tests/AcDream.UI.Abstractions.Tests/Panels/Chat/ChatPanelLayoutTests.cs
@@ -67,8 +67,13 @@ public sealed class ChatPanelLayoutTests
 
         panel.Render(new PanelContext(0.016f, new NoBus()), renderer);
 
-        var beginChildCall = renderer.Calls.Single(c => c.Method == "BeginChild");
-        var size = (System.Numerics.Vector2)beginChildCall.Args[1]!;
+        // L.0 follow-up: the chat panel now wraps its body in an outer
+        // ##chatbody BeginChild (so empty-space clicks can't drag the
+        // parent window). The inner ##chattail BeginChild is the one
+        // that reserves the footer; that's what this test asserts.
+        var chattailCall = renderer.Calls.Single(c => c.Method == "BeginChild"
+            && (string)c.Args[0]! == "##chattail");
+        var size = (System.Numerics.Vector2)chattailCall.Args[1]!;
         // Width 0 = fill available; height < 0 = "fill minus this".
         // Reserved height should equal FrameHeightWithSpacing + a small
         // separator pad (~6f) so the input never visually clips the