diff --git a/README.md b/README.md
index e6eeb42..8dd1055 100644
--- a/README.md
+++ b/README.md
@@ -107,10 +107,11 @@ docker compose exec backend /app/.venv/bin/python -c \
   - **Flashcards** — 15-20 study cards with 3D flip animation
   - **Quiz** — 10-12 multiple choice questions with scoring
   - **Mind Map** — SVG radial tree visualization
-  - **Slide Deck** — 8-12 slide presentation with PPTX download
+  - **Slide Deck** — 8-12 slide presentation with PPTX download; slide diagrams (flowcharts, bar charts) rendered in preview and exported; supports custom .pptx template upload (Claude analyzes and rebuilds it) and per-slide AI editing without regenerating the full deck
   - **Report** — executive summary + sections + conclusions with PDF download
   - **Infographic** — visual blocks with stats and emojis
   - **Data Table** — structured comparison table
+  - All Studio modules accept a **custom prompt** to guide content generation and style
 
 ### Chat
 - **Real-time WebSocket Chat** — ask questions across all documents
@@ -153,7 +154,7 @@ docker compose exec backend /app/.venv/bin/python -c \
 
 ### Tech Stack
 
-**Frontend:** Next.js 15 (App Router), React 19, TypeScript, Tailwind CSS 4, React Query, Zustand, MSAL, WebSocket
+**Frontend:** Next.js 15 (App Router), React 19, TypeScript, Tailwind CSS 4, React Query, Zustand, MSAL, WebSocket, CSS custom property theme system (light/dark)
 
 **Backend:** FastAPI, SQLAlchemy, Python 3.13, uv package manager
 
@@ -192,6 +193,9 @@ Full docs: `http://localhost:9000/docs`
 - `POST /api/notebooks/{id}/studio/{type}` — generate (flashcards / quiz / mindmap / slides / report / infographic / datatable)
 - `GET /api/notebooks/{id}/studio/slides/download` — PPTX file
 - `GET /api/notebooks/{id}/studio/report/download` — PDF file
+- `GET /api/notebooks/{id}/studio/mindmap/download` — SVG file
+- `POST /api/notebooks/{id}/studio/slides/from-template` — generate PPTX from uploaded template (multipart)
+- `POST /api/notebooks/{id}/studio/slides/edit/{index}` — regenerate single slide via prompt
 
 **Documents:**
 - `POST /api/documents/upload/{notebookId}` — upload file
@@ -208,6 +212,8 @@ Full docs: `http://localhost:9000/docs`
 - `POST /api/auth/login` — login
 - `POST /api/auth/microsoft` — SSO login
 
+> **Note:** All download endpoints require the JWT token via `Authorization: Bearer` header. The frontend uses `fetch()` with the auth header for all binary downloads.
+
 ---
 
 ## 🔐 Microsoft SSO Setup
@@ -327,4 +333,14 @@ sandbox-notebookllamalm-nextjs/
 
 ---
 
-**Version:** 3.0.0 | **Updated:** March 2026 | **Status:** Production
+---
+
+## 🎨 Theme System
+
+All pages support **light and dark mode**. The toggle is in the top navigation bar (☀ / ☾).
+
+The theme is built on CSS custom properties (`--bg`, `--fg`, `--primary`, `--border`, etc.) defined in `globals.css`. The selected theme is persisted to `localStorage` and applied before hydration to prevent flash.
+
+---
+
+**Version:** 3.1.0 | **Updated:** March 15, 2026 | **Status:** Production