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    "### 🧩 The Function:\n",
    "\n",
    "```python\n",
    "def update_input_type(choice):\n",
    "```\n",
    "\n",
    "This function is called when the user selects a different **input type** from the radio buttons (`Text`, `Image`, `Voice`, `PDF`, or `PDF(QUIZ)`) in the Gradio interface.\n",
    "\n",
    "Its job:\n",
    "👉 Dynamically show or hide the relevant input components in the interface depending on the user's choice.\n",
    "\n",
    "---\n",
    "\n",
    "### 🧠 What `gr.update()` Does\n",
    "\n",
    "`gr.update()` is a **Gradio helper function** that allows you to update properties of components *without recreating them*.\n",
    "\n",
    "For example:\n",
    "\n",
    "```python\n",
    "gr.update(visible=True)\n",
    "```\n",
    "\n",
    "means “make this component visible.”\n",
    "\n",
    "You can also update other properties like `value`, `label`, `interactive`, etc.\n",
    "\n",
    "---\n",
    "\n",
    "### 📦 What the Function Returns\n",
    "\n",
    "The function returns **a tuple of 6 updates**, one for each component that depends on the selected mode:\n",
    "\n",
    "1. **input_text**\n",
    "2. **image_input**\n",
    "3. **audio_input**\n",
    "4. **pdf_input**\n",
    "5. **quiz_questions_slider**\n",
    "6. **quiz_mode**\n",
    "\n",
    "Each of these is either:\n",
    "\n",
    "* `gr.update(visible=True)` → show this component\n",
    "* `gr.update(visible=False)` → hide this component\n",
    "* `gr.update(value=False)` → reset a checkbox or control value\n",
    "\n",
    "---\n",
    "\n",
    "### 🧭 Mode-by-Mode Explanation\n",
    "\n",
    "#### 1️⃣ If user chooses **\"Text\"**\n",
    "\n",
    "```python\n",
    "return gr.update(visible=True),  # Show text box\n",
    "       gr.update(visible=False), # Hide image input\n",
    "       gr.update(visible=False), # Hide audio input\n",
    "       gr.update(visible=False), # Hide PDF upload\n",
    "       gr.update(visible=False), # Hide quiz slider\n",
    "       gr.update(value=False)    # Turn off quiz mode\n",
    "```\n",
    "\n",
    "✅ Only the **text box** is shown.\n",
    "\n",
    "---\n",
    "\n",
    "#### 2️⃣ If user chooses **\"Image\"**\n",
    "\n",
    "```python\n",
    "return gr.update(visible=True),  # Show text (e.g. question)\n",
    "       gr.update(visible=True),  # Show image input\n",
    "       gr.update(visible=False), # Hide audio\n",
    "       gr.update(visible=False), # Hide PDF\n",
    "       gr.update(visible=False), # Hide quiz slider\n",
    "       gr.update(value=False)    # Quiz mode off\n",
    "```\n",
    "\n",
    "✅ Shows both **text** and **image upload** fields.\n",
    "\n",
    "---\n",
    "\n",
    "#### 3️⃣ If user chooses **\"Voice\"**\n",
    "\n",
    "```python\n",
    "return gr.update(visible=False), # Hide text\n",
    "       gr.update(visible=False), # Hide image\n",
    "       gr.update(visible=True),  # Show audio input\n",
    "       gr.update(visible=False), # Hide PDF\n",
    "       gr.update(visible=False), # Hide quiz slider\n",
    "       gr.update(value=False)    # Quiz mode off\n",
    "```\n",
    "\n",
    "✅ Only the **audio recorder/upload** is visible.\n",
    "\n",
    "---\n",
    "\n",
    "#### 4️⃣ If user chooses **\"PDF\"**\n",
    "\n",
    "```python\n",
    "return gr.update(visible=True),  # Show text (for asking questions about PDF)\n",
    "       gr.update(visible=False), # Hide image\n",
    "       gr.update(visible=False), # Hide audio\n",
    "       gr.update(visible=True),  # Show PDF upload\n",
    "       gr.update(visible=False), # Hide quiz slider\n",
    "       gr.update(value=False)    # Quiz mode off\n",
    "```\n",
    "\n",
    "✅ Shows **text box + PDF upload** (for asking questions about a document).\n",
    "\n",
    "---\n",
    "\n",
    "#### 5️⃣ If user chooses **\"PDF(QUIZ)\"**\n",
    "\n",
    "```python\n",
    "return gr.update(visible=False), # Hide text\n",
    "       gr.update(visible=False), # Hide image\n",
    "       gr.update(visible=False), # Hide audio\n",
    "       gr.update(visible=True),  # Show PDF upload\n",
    "       gr.update(visible=True),  # Show quiz question slider\n",
    "       gr.update(value=True)     # Turn on quiz mode\n",
    "```\n",
    "\n",
    "✅ Shows **PDF upload + quiz settings**, hides everything else.\n",
    "\n",
    "---\n",
    "\n",
    "### ⚙️ How It’s Used\n",
    "\n",
    "This function is connected to the radio button like this:\n",
    "\n",
    "```python\n",
    "input_type.change(\n",
    "    fn=update_input_type,\n",
    "    inputs=[input_type],\n",
    "    outputs=[input_text, image_input, audio_input, pdf_input, quiz_questions_slider, quiz_mode]\n",
    ")\n",
    "```\n",
    "\n",
    "So whenever the user changes the radio selection, Gradio calls `update_input_type(choice)` and updates the visibility of the components accordingly.\n",
    "\n",
    "---\n",
    "\n",
    "### 🧩 In Short\n",
    "\n",
    "| Mode          | Visible Components                        |\n",
    "| ------------- | ----------------------------------------- |\n",
    "| **Text**      | Textbox                                   |\n",
    "| **Image**     | Textbox + Image Upload                    |\n",
    "| **Voice**     | Audio Upload                              |\n",
    "| **PDF**       | Textbox + PDF Upload                      |\n",
    "| **PDF(QUIZ)** | PDF Upload + Quiz Slider (Quiz Mode = ON) |\n",
    "\n",
    "---\n"
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