diff --git a/tools/chatgui/src/message_text.cpp b/tools/chatgui/src/message_text.cpp
index c5ba9ebc5..60cbc19a1 100644
--- a/tools/chatgui/src/message_text.cpp
+++ b/tools/chatgui/src/message_text.cpp
@@ -237,6 +237,8 @@ QRectF messageCodeCopyRect(const QTextLayout& layout, const MessageCodeBlock& bl
     if (!line.isValid()) return {};
     const QFontMetricsF metrics(layout.font());
     const qreal height = metrics.height() + 8;
-    const qreal buttonWidth = qMin(qreal(width), metrics.horizontalAdvance(QCoreApplication::translate("ChatGui", "Copy")) + 16);
+    const qreal labelWidth = qMax(metrics.horizontalAdvance(QCoreApplication::translate("ChatGui", "Copy")),
+                                 metrics.horizontalAdvance(QCoreApplication::translate("ChatGui", "Copied")));
+    const qreal buttonWidth = qMin(qreal(width), labelWidth + 16);
     return QRectF(width - buttonWidth, line.y() - height + 2, buttonWidth, height - 4);
 }
diff --git a/tools/chatgui/src/messagedelegate.cpp b/tools/chatgui/src/messagedelegate.cpp
index 9e9b48929..aace6d3df 100644
--- a/tools/chatgui/src/messagedelegate.cpp
+++ b/tools/chatgui/src/messagedelegate.cpp
@@ -190,6 +190,17 @@ bool MessageDelegate::editorEvent(QEvent *event, QAbstractItemModel *model,
     if (copyCode) {
         const auto& block = L.formattedText->code[codeBlock];
         QApplication::clipboard()->setText(L.formattedText->text.mid(block.start, block.length), QClipboard::Clipboard);
+        m_copiedCode = index; m_copiedBlock = codeBlock; m_copiedSource = index.data(MsgTextRole).toString();
+        const quint64 feedback = ++m_copyFeedbackSequence;
+        const auto* copyView = qobject_cast<const QAbstractItemView*>(option.widget);
+        const QPointer<QWidget> repaint = copyView ? copyView->viewport() : const_cast<QWidget*>(option.widget);
+        if (repaint) repaint->update();
+        QTimer::singleShot(1500, this, [this, feedback, repaint] {
+            if (feedback != m_copyFeedbackSequence) return;
+            m_copiedCode = QPersistentModelIndex(); m_copiedBlock = -1; m_copiedSource.clear();
+            if (repaint) repaint->update();
+            GUI_DEBUG("message code: copy feedback cleared");
+        });
         GUI_INFO("message code copied: row=%d block=%d chars=%d", index.row(), codeBlock, block.length);
         return true;
     }
@@ -1616,14 +1627,17 @@ void MessageDelegate::paintBody(QPainter* painter, const QStyleOptionViewItem& o
         layout.draw(painter, L.textRect.topLeft(), selections);
         if (L.formattedText) {
             painter->save();
-            for (const auto& block : L.formattedText->code) {
+            for (int number = 0; number < L.formattedText->code.size(); ++number) {
+                const auto& block = L.formattedText->code[number];
+                const bool copied = m_copiedCode == index && m_copiedBlock == number && m_copiedSource == msgText;
                 const auto button = messageCodeCopyRect(layout, block, L.textRect.width()).translated(L.textRect.topLeft());
                 painter->fillRect(QRectF(L.textRect.x(), button.top() - 2, L.textRect.width(), button.height() + 4),
                                   option.palette.alternateBase());
-                painter->setPen(option.palette.mid().color()); painter->setBrush(option.palette.button());
+                painter->setPen(option.palette.mid().color());
+                painter->setBrush(copied ? option.palette.highlight() : option.palette.button());
                 painter->drawRoundedRect(button.adjusted(0.5, 0.5, -0.5, -0.5), 4, 4);
-                painter->setPen(option.palette.buttonText().color());
-                painter->drawText(button, Qt::AlignCenter, QCoreApplication::translate("ChatGui", "Copy"));
+                painter->setPen(copied ? option.palette.highlightedText().color() : option.palette.buttonText().color());
+                painter->drawText(button, Qt::AlignCenter, QCoreApplication::translate("ChatGui", copied ? "Copied" : "Copy"));
                 const QRectF label(L.textRect.x() + 8, button.top(), qMax(0.0, button.left() - L.textRect.x() - 16), button.height());
                 painter->setPen(option.palette.text().color());
                 const QString language = block.languageName.isEmpty() ? QStringLiteral("text") : block.languageName;
diff --git a/tools/chatgui/src/messagedelegate.h b/tools/chatgui/src/messagedelegate.h
index 60e2086d1..0f2076ba6 100644
--- a/tools/chatgui/src/messagedelegate.h
+++ b/tools/chatgui/src/messagedelegate.h
@@ -163,6 +163,10 @@ private:
     QPoint m_codePressPosition;
     int m_codePressBlock = -1;
     QString m_codePressSource;
+    QPersistentModelIndex m_copiedCode; // Последняя успешно нажатая Copy; состояние только GUI, не данные сообщения.
+    int m_copiedBlock = -1;
+    QString m_copiedSource; // Изменённый текст сразу скрывает подтверждение старого блока.
+    quint64 m_copyFeedbackSequence = 0; // Повторное нажатие продлевает подтверждение, старый timeout его не снимает.
     QPoint m_mediaPressPosition; // Порог клика <5px, как для цитат/реакций.
     std::function<bool(const QModelIndex&)> m_downloadCb;