diff --git a/src/components/Componentes/question-sheet.test.tsx b/src/components/Componentes/question-sheet.test.tsx
index 0a3449d..205dd26 100644
--- a/src/components/Componentes/question-sheet.test.tsx
+++ b/src/components/Componentes/question-sheet.test.tsx
@@ -214,14 +214,14 @@ describe("QuestionSheet component", () => {
     pushState.mockRestore();
   });
 
-  it("opens a searchable sheet without focusing search", () => {
+  it("opens a searchable sheet for 7+ options without focusing search", () => {
     const question = {
       id: "q_country",
       title: "کشور",
       type: "dropdown",
       required: true,
       extras: { placeHolder: "انتخاب کشور" },
-      options: Array.from({ length: 6 }, (_, index) => ({
+      options: Array.from({ length: 7 }, (_, index) => ({
         id: `country-${index}`,
         value: `country-${index}`,
         label: `کشور ${index + 1}`,
@@ -246,7 +246,7 @@ describe("QuestionSheet component", () => {
     );
   });
 
-  it("sizes a short options sheet to its content", () => {
+  it("sizes a short options sheet to its content (4 options)", () => {
     const question = {
       id: "q_short",
       title: "انتخاب کوتاه",
@@ -277,4 +277,99 @@ describe("QuestionSheet component", () => {
       "max-h-[82svh]",
     );
   });
+
+  it("compact boundary: 5 options → compact, no search", () => {
+    const question = {
+      id: "q_boundary_5",
+      title: "پنج گزینه",
+      type: "dropdown",
+      required: true,
+      extras: { placeHolder: "انتخاب" },
+      options: Array.from({ length: 5 }, (_, i) => ({
+        id: `opt-${i}`,
+        value: `opt-${i}`,
+        label: `گزینه ${i + 1}`,
+        order: i + 1,
+      })),
+      ui_config: {},
+    } as QuestionField;
+
+    render(
+      <QueryClientProvider client={queryClient}>
+        <QuestionAnswersProvider slug="test" questions={[question]}>
+          <QuestionSheet question={question} />
+        </QuestionAnswersProvider>
+      </QueryClientProvider>,
+    );
+
+    fireEvent.click(screen.getByRole("button", { name: "انتخاب" }));
+
+    const section = screen.getByRole("dialog").querySelector("section");
+    expect(section).toHaveClass("h-auto", "max-h-[82svh]");
+    expect(screen.queryByPlaceholderText("جستجو...")).toBeNull();
+  });
+
+  it("compact boundary: 6 options → compact, no search", () => {
+    const question = {
+      id: "q_boundary_6",
+      title: "شش گزینه",
+      type: "dropdown",
+      required: true,
+      extras: { placeHolder: "انتخاب" },
+      options: Array.from({ length: 6 }, (_, i) => ({
+        id: `opt-${i}`,
+        value: `opt-${i}`,
+        label: `گزینه ${i + 1}`,
+        order: i + 1,
+      })),
+      ui_config: {},
+    } as QuestionField;
+
+    render(
+      <QueryClientProvider client={queryClient}>
+        <QuestionAnswersProvider slug="test" questions={[question]}>
+          <QuestionSheet question={question} />
+        </QuestionAnswersProvider>
+      </QueryClientProvider>,
+    );
+
+    fireEvent.click(screen.getByRole("button", { name: "انتخاب" }));
+
+    const section = screen.getByRole("dialog").querySelector("section");
+    expect(section).toHaveClass("h-auto", "max-h-[82svh]");
+    expect(section).not.toHaveClass("h-[82svh]");
+    expect(screen.queryByPlaceholderText("جستجو...")).toBeNull();
+  });
+
+  it("compact boundary: 7 options → large sheet with search", () => {
+    const question = {
+      id: "q_boundary_7",
+      title: "هفت گزینه",
+      type: "dropdown",
+      required: true,
+      extras: { placeHolder: "انتخاب" },
+      options: Array.from({ length: 7 }, (_, i) => ({
+        id: `opt-${i}`,
+        value: `opt-${i}`,
+        label: `گزینه ${i + 1}`,
+        order: i + 1,
+      })),
+      ui_config: {},
+    } as QuestionField;
+
+    render(
+      <QueryClientProvider client={queryClient}>
+        <QuestionAnswersProvider slug="test" questions={[question]}>
+          <QuestionSheet question={question} />
+        </QuestionAnswersProvider>
+      </QueryClientProvider>,
+    );
+
+    fireEvent.click(screen.getByRole("button", { name: "انتخاب" }));
+
+    const section = screen.getByRole("dialog").querySelector("section");
+    expect(section).toHaveClass("h-[82svh]");
+    expect(section).not.toHaveClass("h-auto");
+    expect(screen.getByPlaceholderText("جستجو...")).toBeDefined();
+  });
 });
diff --git a/src/components/Componentes/question-sheet.tsx b/src/components/Componentes/question-sheet.tsx
index c37fc47..d2829cb 100644
--- a/src/components/Componentes/question-sheet.tsx
+++ b/src/components/Componentes/question-sheet.tsx
@@ -73,11 +73,11 @@ export function QuestionSheet({ question, disabled }: QuestionSheetProps) {
 
   const options = question.options || [];
 
-  const showSearch = (() => {
-    if (question.extras?.noSearch) return false;
-    return options.length > 5;
-  })();
-  const isCompact = options.length <= 5;
+  const COMPACT_OPTIONS_MAX = 6;
+
+  const isCompact = options.length <= COMPACT_OPTIONS_MAX;
+  const showSearch =
+    !question.extras?.noSearch && options.length > COMPACT_OPTIONS_MAX;
 
   useEffect(() => {
     if (!isOpen || isClosing || !isCompact) return;
diff --git a/src/lib/webview-actions.ts b/src/lib/webview-actions.ts
index 90e82ee..4b26031 100644
--- a/src/lib/webview-actions.ts
+++ b/src/lib/webview-actions.ts
@@ -2,7 +2,7 @@
  * WebView Utility Actions
  *
  * Helper module for sending utility actions to Flutter via HabibApp channel.
- * Actions: download_file, copy_to_clipboard, open_external_url, upload_file
+ * Actions: download_file, copy_to_clipboard, open_external_url, upload_file, buy_coin
  *
  * Docs: WEBVIEW_ACTION_DOWNLOAD.md
  */
@@ -150,3 +150,19 @@ export function uploadFile(options: UploadFileOptions): boolean {
     options as unknown as Record<string, unknown>,
   );
 }
+
+// ─── buy_coin ────────────────────────────────────────────
+
+/**
+ * Ask Flutter to open the Habib Coin packages list page (Add Coin).
+ *
+ * Used when a payment fails with "Not enough coins": the user tops up
+ * natively, returns to the WebView and retries the payment.
+ *
+ * ```ts
+ * buyHabibCoinPackages();
+ * ```
+ */
+export function buyHabibCoinPackages(): boolean {
+  return postActionToFlutter("buy_coin");
+}