diff --git a/Assets/Scripts/ChatInputHandler.cs b/Assets/Scripts/ChatInputHandler.cs
index 52ea285b5f..21b772865b 100644
--- a/Assets/Scripts/ChatInputHandler.cs
+++ b/Assets/Scripts/ChatInputHandler.cs
@@ -106,6 +106,7 @@ namespace BrewMonster.Scripts.ChatUI
 
             if (strText.Length <= 0)
             {
+                ClearTextInInputField();
                 //ChangeFocus();
                 return;
             }
@@ -133,6 +134,7 @@ namespace BrewMonster.Scripts.ChatUI
 
             SaveHistory(resolvedChannel, strText, nPack, nSlot, now);
 
+            ClearTextInInputField();
             //ChangeFocus();
         }
 
@@ -317,6 +319,14 @@ namespace BrewMonster.Scripts.ChatUI
         private void SendPrivateChat(string target, string msg, int pack, int slot)
         {
             Debug.Log($"Whisper to {target}: {msg}");
+
+            // [Port] C++: CDlgChat::OnCommand_speak → privatechat branch
+            // Gửi tin nhắn mật (whisper) lên server qua GameSession.
+            UnityGameSession.Instance.GameSession.SendPrivateChatData(target, msg, 0, 0, pack, slot);
+
+            // Server không echo whisper lại cho chính mình → hiện local echo
+            string localEcho = $"<color=#0065FE>[Whisper] → {target}: {msg}</color>";
+            EventBus.Publish(new GameSession.ChatMessageEvent(localEcho, (byte)ChatChannel.GP_CHAT_WHISPER));
         }
 
         // =====================================================
@@ -410,9 +420,12 @@ namespace BrewMonster.Scripts.ChatUI
 
         private bool IsPlayerBlacklisted(int idPlayer) => false; // Placeholder
 
-        private void ChangeFocus()
+        private void ClearTextInInputField()
         {
             inputField.text = "";
+        }
+        private void ChangeFocus()
+        {
             inputField.ActivateInputField();
         }