Add click-to-copy animation on TOTP code display

- Click anywhere on the code area copies to clipboard
- Visual feedback: green flash + checkmark for 400ms
- Hand cursor on code frame, label, and timer
- Copy button still works as before

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

gui/tabs/totp_tab.py

@@ -36,27 +36,32 @@ class TOTPTab(ctk.CTkFrame):
         )
         self.server_label.pack(fill="x", padx=15, pady=(0, 10))
 
-        # Code display frame
-        code_frame = ctk.CTkFrame(self, fg_color="#1e1e2e", corner_radius=12)
-        code_frame.pack(fill="x", padx=15, pady=(0, 10))
+        # Code display frame — clickable
+        self.code_frame = ctk.CTkFrame(self, fg_color="#1e1e2e", corner_radius=12, cursor="hand2")
+        self.code_frame.pack(fill="x", padx=15, pady=(0, 10))
 
         self.code_label = ctk.CTkLabel(
-            code_frame, text="------",
+            self.code_frame, text="------",
             font=ctk.CTkFont(family="Consolas", size=42, weight="bold"),
-            text_color="#22c55e"
+            text_color="#22c55e", cursor="hand2"
         )
         self.code_label.pack(pady=(20, 5))
 
         self.timer_label = ctk.CTkLabel(
-            code_frame, text="",
+            self.code_frame, text="",
             font=ctk.CTkFont(size=12), text_color="#9ca3af"
         )
         self.timer_label.pack(pady=(0, 5))
 
-        self.progress_bar = ctk.CTkProgressBar(code_frame, width=300, height=6)
+        self.progress_bar = ctk.CTkProgressBar(self.code_frame, width=300, height=6)
         self.progress_bar.pack(pady=(0, 15))
         self.progress_bar.set(1.0)
 
+        # Click anywhere on the code frame → copy
+        self.code_frame.bind("<Button-1>", lambda e: self._copy_code())
+        self.code_label.bind("<Button-1>", lambda e: self._copy_code())
+        self.timer_label.bind("<Button-1>", lambda e: self._copy_code())
+
         # Copy button
         self.copy_btn = ctk.CTkButton(
             self, text=t("totp_copy"), width=200, height=40,
@@ -205,12 +210,30 @@ class TOTPTab(ctk.CTkFrame):
         if code_text and code_text != "------" and code_text != "ERROR":
             self.clipboard_clear()
             self.clipboard_append(code_text)
+            self._animate_copy()
             self.status_label.configure(text=t("totp_copied"), text_color="#22c55e")
             self.after(2000, lambda: self.status_label.configure(text=""))
         else:
             self.status_label.configure(text=t("totp_no_code"), text_color="#ef4444")
             self.after(2000, lambda: self.status_label.configure(text=""))
 
+    def _animate_copy(self):
+        """Flash the code frame and briefly show 'Copied' feedback."""
+        # Save original state
+        orig_fg = self.code_frame.cget("fg_color")
+        orig_text = self.code_label.cget("text")
+        orig_color = self.code_label.cget("text_color")
+
+        # Flash: green background + "Copied!" text
+        self.code_frame.configure(fg_color="#164e36")
+        self.code_label.configure(text="✓", text_color="#4ade80")
+
+        def restore():
+            self.code_frame.configure(fg_color=orig_fg)
+            self.code_label.configure(text=orig_text, text_color=orig_color)
+
+        self.after(400, restore)
+
     def _toggle_secret(self):
         self._secret_visible = not self._secret_visible
         self.secret_entry.configure(show="" if self._secret_visible else "*")