eod: status

For embeds

CONTEXT.md

@@ -25,19 +25,11 @@ My core instructions are:
 The objective is to build a multi-platform chat overlay SaaS (Software as a Service) for streamers. The service will aggregate chat from Twitch and YouTube into a single, customizable browser source for use in streaming software like OBS.
 
 ### Current Status
-The project is in **Phase 1: User Authentication & Database**. Most of this phase is complete.
-*   A solid FastAPI application skeleton is in place.
-*   The database schema (`User`, `Setting` models) is defined using SQLAlchemy and a SQLite database.
-*   A secure Twitch OAuth2 authentication flow is fully functional. It correctly:
-    1.  Redirects users to Twitch.
-    2.  Handles the callback.
-    3.  Exchanges the authorization code for tokens.
-    4.  Fetches user details from the Twitch API.
-    5.  Encrypts the tokens using the `cryptography` library.
-    6.  Saves or updates the user's record in the database.
+**Phases 1, 2, and 3 are complete.** The application is now a fully functional chat overlay service for Twitch.
+*   **Phase 1 (Authentication):** A secure Twitch OAuth2 flow is implemented, with user data and encrypted tokens stored in a SQLite database.
+*   **Phase 2 (Dashboard & Configuration):** A dynamic user dashboard is available after login. It includes a theme switcher (light/dark), a theme selector for the overlay, and a full CRUD system for users to create and manage their own private CSS themes.
+*   **Phase 3 (Real-time Chat):** A decoupled background listener manager successfully starts `twitchio` listeners for each user. A WebSocket manager broadcasts incoming chat messages to the correct user's overlay in real-time.
 *   A basic HTML login page is served at the root URL (`/`).
-*   Configuration and secrets are managed securely via a `config.py` file that reads from a `.env` file.
-
 ### Core Architecture
 The project is built on the "hybrid architecture" detailed in the `RESEARCH_REPORT.md`:
 *   **Authentication:** Always use the official, secure OAuth2 flows for each platform.

DEVELOPMENT_PLAN.md

@@ -17,6 +17,8 @@ The goal is to create a service where streamers can log in using their platform
 ## 3. Implementation Roadmap
 
 ### Phase 1: User Authentication & Database (FastAPI)
+**Status: ✔️ Complete**
+
 1.  **Project Skeleton:** Establish the core FastAPI application structure, dependencies, and version control.
 2.  **Database Schema:** Define the data models for users and settings using SQLAlchemy.
 3.  **Twitch OAuth2:** Implement the server-side OAuth2 flow within FastAPI to authenticate users and securely store encrypted tokens in the database.
@@ -24,16 +26,25 @@ The goal is to create a service where streamers can log in using their platform
 5.  **Basic Frontend:** Develop a simple login page.
 
 ### Phase 2: User Dashboard & Configuration
+**Status: ✔️ Complete**
+
 1.  **Dashboard UI:** Create a dashboard page accessible only to authenticated users.
-2.  **Settings API:** Build API endpoints for users to save and retrieve their overlay settings (e.g., custom CSS).
-3.  **Overlay URL Generation:** Display a unique, persistent overlay URL for each user on their dashboard.
+2.  **Settings API:** Build API endpoints for users to save and retrieve their overlay settings.
+3.  **Overlay URL Generation:** Display a unique, persistent overlay URL for each user.
+4.  **Theming System:** Implement a site-wide light/dark theme switcher.
+5.  **Custom CSS Themes:** Develop a full CRUD (Create, Read, Update, Delete) system allowing users to create, manage, and preview their own private CSS overlay themes.
+6.  **Help & Documentation:** Add a help page to guide users in creating their custom CSS.
 
 ### Phase 3: Dynamic Listeners & Basic Overlay
+**Status: ✔️ Complete**
+
 1.  **Dynamic Listener Manager:** Design and build a background service that starts and stops chat listener processes (`twitchio`, `pytchat`) based on user activity.
 2.  **Real-time Message Broadcasting:** Implement a WebSocket system within FastAPI to push chat messages to the correct user's overlay in real-time.
 3.  **Basic Overlay UI:** Create the `overlay.html` page that connects to the WebSocket and renders incoming chat messages.
 
 ### Phase 4: Integration & Refinement
+**Status: ⏳ Not Started**
+
 1.  **YouTube Integration:** Implement the full YouTube OAuth2 flow and integrate the `pytchat` listener into the dynamic listener manager.
 2.  **Advanced Overlay Customization:** Add more features for users to customize their overlay's appearance and behavior.
 3.  **Twitch Chat Writeback:** Re-introduce the `chat:write` scope during authentication to allow the service (and potentially moderators, as per Issue #2) to send messages to the user's Twitch chat.

README.md

@@ -2,7 +2,7 @@
 
 MultiChatOverlay is a web-based, multi-platform chat overlay service designed for streamers. The goal is to create a "SaaS" (Software as a Service) project where users can log in with their platform accounts (Twitch, YouTube, etc.) and get a single, unified, and customizable chat overlay for their stream.
 
-This project is currently in **Phase 1: Initial Development**.
+This project is currently in **Phase 2: User Dashboard & Configuration**.
 
 ## 🚀 Project Goal
 
@@ -15,7 +15,7 @@ This project is currently in **Phase 1: Initial Development**.
 
 User privacy and security are paramount. All sensitive user credentials, such as OAuth access and refresh tokens from external platforms, are **always encrypted** before being stored in the database. They are never stored in plain text, ensuring a high standard of security for user data.
 
-## <EFBFBD> Technology Stack
+## 🖥️ Technology Stack
 
 * **Backend:** Python 3.9+ (FastAPI)
 * **Database:** SQLite (initially, for simplicity) with SQLAlchemy

TASKS.md

@@ -10,7 +10,7 @@ This file tracks all active development tasks. It is based on the official `DEVE
 4.  When your Pull Request is *merged*, move it to "Done."
 
 If you want to use emojis for visibility, here's some I have used:
-✔️ - Done | 🧑‍🔧 - In progress | ↗️ - Task evolved (should correspond with an edit in the [DEVELOPMENT_PLAN.md](DEVELOPMENT_PLAN.md)
+✔️ - Done | 🧑‍🔧 - In progress | ↗️ - Task evolved (should correspond with an edit in the [DEVELOPMENT_PLAN.md](DEVELOPMENT_PLAN.md) )
 
 ---
 
@@ -20,8 +20,6 @@ If you want to use emojis for visibility, here's some I have used:
 
 ### To Do
 
-### In Progress
-
 ### Done
 * `[✔️]` **1.0: Project Skeleton** - @ramforth
     * *Task:* Setup `main.py`, `requirements.txt`, and `.gitignore`.
@@ -35,33 +33,37 @@ If you want to use emojis for visibility, here's some I have used:
 
 ## ⏳ Phase 2: User Dashboard & Configuration
 
-* **Goal:** Allow logged-in users to see a dashboard, get their overlay URL, and save settings.
-* *(All tasks for this phase are on hold until Phase 1 is complete)*
+* **Goal:** Allow logged-in users to see a dashboard, get their overlay URL, and save settings. Now that Phase 1 is done, these tasks are ready to be worked on.
 
 ### To Do
-* `[ ]` **2.0: CSS Refactor & Styling:** Improve the general look and feel of the application pages.
-* `[ ]` **2.1: Dashboard UI:** Create `dashboard.html` (only for logged-in users).
-* `[ ]` **2.2: Config API:** Create API endpoints (`GET`, `POST`) for `/api/settings` to save/load user preferences (e.g., custom CSS).
-* `[ ]` **2.3: Overlay URL:** Generate and display the unique overlay URL for the user (e.g., `/overlay/{user_id}`).
+
+* `[ ]` **2.4: Create Logo and Favicon:** The project should have a logo and a favicon.
+
+### Done
+* `[✔️]` **2.0: CSS Refactor & Styling:** Improved the general look and feel of the application pages, including a light/dark theme switcher.
+* `[✔️]` **2.1: Dashboard UI:** Created `dashboard.html` for logged-in users to manage settings.
+* `[✔️]` **2.2: Config API:** Created API endpoints for `/api/settings` to save user preferences.
+* `[✔️]` **2.3: Overlay URL:** Generated and displayed the unique overlay URL for the user on the dashboard.
+* `[✔️]` **2.5: Custom CSS Themes:** Implemented a system for users to create, preview, and delete their own private CSS overlay themes.
+* `[✔️]` **2.6: CSS Help Page:** Created a guide for users on how to write custom CSS for their overlays.
 
 ---
 
-## 💬 Phase 3: Dynamic Listeners & Basic Overlay
+## 💬 Phase 3: Real-time Chat & Overlay
 
 * **Goal:** The core magic. Start chat listeners for users and show messages in the overlay.
 * *(All tasks for this phase are on hold until Phase 2 is complete)*
 
 ### To Do
-* `[ ]` **3.1: Dynamic Listener Manager (The Big One):** Design a system (e.g., background service) to start/stop listener processes for users.
-* `[ ]` **3.2: User-Specific Broadcasting:** Update the WebSocket system to use "rooms" (e.g., `/ws/{user_id}`) so users only get their *own* chat.
-* `[ ]` **3.3: Basic Overlay UI:** Create the `overlay.html` page that connects to the WebSocket and displays messages.
 
 ---
+### Done
+* `[✔️]` **3.1: Dynamic Listener Manager:** Designed and implemented a system to start/stop listener processes for users on application startup/shutdown.
+* `[✔️]` **3.2: User-Specific Broadcasting:** Implemented a WebSocket manager and endpoint (`/ws/{user_id}`) to broadcast messages to the correct user's overlay.
+* `[✔️]` **3.3: Basic Overlay UI:** Created dynamic overlay templates that connect to the WebSocket and display incoming chat messages.
 
 ## 💡 Backlog & Future Features
 
-* *(Tasks from Phase 4, Gitea Issues, etc., will be added here as we go)*
 * `[ ]` Implement YouTube OAuth & `pytchat` listener (Phase 4).
 * `[ ]` "Single Message Focus" feature (Issue #1).
-* `[ ]` Moderator panels (Issue #2).
-* `[ ]` Custom CSS storage & injection (Issue #6).
+* `[ ]` Moderator panels (Issue #2).

auth.py

@@ -99,6 +99,9 @@ async def auth_twitch_callback(code: str, state: str, request: Request, db: Sess
             encrypted_tokens=encrypted_tokens
         )
         db.add(user)
+        # Also create a default settings object for the new user
+        new_settings = models.Setting(owner=user)
+        db.add(new_settings)
     
     db.commit()
     

chat_listener.py

@@ -0,0 +1,60 @@
+from twitchio.ext import commands
+
+class NullAdapter:
+    """A dummy web adapter that does nothing to prevent twitchio from starting a webserver."""
+    async def start(self):
+        pass
+
+    async def stop(self):
+        pass
+
+class TwitchBot(commands.Bot):
+    def __init__(self, access_token: str, client_id: str, client_secret: str, bot_id: str, channel_name: str, websocket_manager, db_user_id: int):
+        self.websocket_manager = websocket_manager
+        # Store our application's database user ID to avoid conflict with twitchio's internal 'owner_id'
+        self.db_user_id = db_user_id
+
+        # Force the bot to use our dummy adapter that does nothing.
+        # This is the definitive fix to prevent any port conflicts.
+        adapter = NullAdapter()
+
+        super().__init__(
+            token=access_token,
+            # Mandate: Explicitly disable the internal web server.
+            web_server_adapter=adapter,
+            eventsub_url=None,
+            prefix='!', # A prefix is required but won't be used for reading chat
+            initial_channels=[channel_name],
+            # These are required by twitchio
+            client_id=client_id,
+            client_secret=client_secret,
+            # The 'bot_id' is the Twitch ID of the user account the bot is running as
+            id=bot_id
+        )
+        self.channel_name = channel_name
+
+    async def event_ready(self):
+        """Called once when the bot goes online."""
+        print(f"Listener ready for #{self.channel_name}")
+
+    async def event_message(self, message): # Mandate: Type hint removed to prevent import errors.
+        """Runs every time a message is sent in chat."""
+        # This is CRITICAL when overriding a listener in commands.Bot
+        # to ensure the bot can still process commands if any are added.
+        await super().event_message(message)
+        
+        # Ignore messages sent by the bot itself to prevent loops.
+        if message.echo:
+            return
+        
+        # Prepare the message data to be sent to the frontend
+        chat_data = {
+            "author": message.author.name,
+            "text": message.content,
+            "platform": "twitch"
+        }
+
+        # Broadcast the message to the specific user's overlay
+        # We need the user's ID to know which WebSocket connection to send to.
+        user_id = self.db_user_id
+        await self.websocket_manager.broadcast_to_user(user_id, chat_data)

dashboard.html

@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Dashboard - MultiChatOverlay</title>
-
-    <link rel="preconnect" href="https://fonts.googleapis.com">
-    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap" rel="stylesheet">
-
-    <link rel="stylesheet" href="/static/style.css">
-</head>
-<body>
-    <div class="container">
-        <h1>Dashboard</h1>
-        <p>Welcome, <strong>{{ user.username }}</strong>! You are successfully logged in.</p>
-        
-        <div class="overlay-url-container">
-            <p>Your unique overlay URL:</p>
-            <code>{{ overlay_url }}</code>
-        </div>
-
-        <p><a href="/logout">Logout</a></p>
-    </div>
-</body>
-</html>

listener_manager.py

@@ -0,0 +1,51 @@
+import asyncio
+from typing import Dict
+
+from chat_listener import TwitchBot
+import security # To decrypt tokens
+from config import settings # To get client_id and client_secret
+
+class ListenerManager:
+    def __init__(self):
+        # This dictionary will hold our running listener tasks.
+        # The key will be the user_id and the value will be the asyncio.Task.
+        self.active_listeners: Dict[int, asyncio.Task] = {}
+        print("ListenerManager initialized.")
+
+    async def start_listener_for_user(self, user, websocket_manager):
+        """
+        Starts a chat listener for a given user if one isn't already running.
+        """
+        if user.id in self.active_listeners:
+            print(f"Listener for user {user.id} is already running.")
+            return
+
+        print(f"Starting listener for user {user.id} ({user.username})...")
+        
+        tokens = security.decrypt_tokens(user.encrypted_tokens)
+        access_token = tokens['access_token']
+        bot = TwitchBot(
+            access_token=access_token, 
+            channel_name=user.username,
+            client_id=settings.TWITCH_CLIENT_ID,
+            client_secret=settings.TWITCH_CLIENT_SECRET,
+            bot_id=user.platform_user_id,
+            websocket_manager=websocket_manager,
+            db_user_id=user.id
+        )
+        task = asyncio.create_task(bot.start())
+        self.active_listeners[user.id] = task
+
+    async def stop_listener_for_user(self, user_id: int):
+        """Stops a chat listener for a given user."""
+        if user_id not in self.active_listeners:
+            print(f"No active listener found for user {user_id}.")
+            return
+
+        print(f"Stopping listener for user {user_id}...")
+        task = self.active_listeners.pop(user_id)
+        task.cancel()
+        try:
+            await task
+        except asyncio.CancelledError:
+            print(f"Listener for user {user_id} successfully stopped.")

main.py

@@ -1,15 +1,22 @@
 import os
-from fastapi import FastAPI, Request, Depends
-from starlette.middleware.sessions import SessionMiddleware
-from starlette.staticfiles import StaticFiles
+import asyncio
+from fastapi import FastAPI, Request, Depends, HTTPException
+from starlette.middleware.sessions import SessionMiddleware 
+from starlette.staticfiles import StaticFiles 
 from starlette.responses import FileResponse, RedirectResponse
 from fastapi.templating import Jinja2Templates
+from starlette.websockets import WebSocket
 from contextlib import asynccontextmanager
+from sqlalchemy.orm import Session
 
 import models
-from database import engine
+from database import engine, SessionLocal
 import auth # Import the new auth module
+import schemas
+from starlette.responses import Response
 from config import settings # Import settings to get the secret key
+from listener_manager import ListenerManager
+from websocket_manager import WebSocketManager
 
 # --- Absolute Path Configuration ---
 # Get the absolute path of the directory where this file is located
@@ -17,14 +24,39 @@ BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 STATIC_DIR = os.path.join(BASE_DIR, "static")
 TEMPLATES_DIR = os.path.join(BASE_DIR, "templates")
 
+@asynccontextmanager
+async def background_listener_startup(app: FastAPI):
+    """A non-blocking task to start listeners after the app has started."""
+    print("Background task: Starting listeners for all users...")
+    db = SessionLocal()
+    users = db.query(models.User).all()
+    db.close()
+    for user in users:
+        # Use try/except to ensure one failing listener doesn't stop others
+        try:
+            await app.state.listener_manager.start_listener_for_user(user, app.state.websocket_manager)
+        except Exception as e:
+            print(f"ERROR: Failed to start listener for user {user.id} ({user.username}): {e}")
+
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     # This code runs on startup
     print("Application startup: Creating database tables...")
+    app.state.websocket_manager = WebSocketManager()
+    app.state.listener_manager = ListenerManager()
     models.Base.metadata.create_all(bind=engine)
     print("Application startup: Database tables created.")
+
+    # Decouple listener startup from the main application startup
+    asyncio.create_task(background_listener_startup(app))
     yield
-    # Code below yield runs on shutdown, if needed
+    
+    # This code runs on shutdown
+    print("Application shutdown: Stopping all listeners...")
+    manager = app.state.listener_manager
+    # Create a copy of keys to avoid runtime errors from changing dict size
+    for user_id in list(manager.active_listeners.keys()):
+        await manager.stop_listener_for_user(user_id)
 
 app = FastAPI(lifespan=lifespan)
 
@@ -42,8 +74,8 @@ app.include_router(auth.router)
 app.add_middleware(SessionMiddleware, secret_key=settings.ENCRYPTION_KEY)
 
 @app.get("/")
-async def read_root():
-    return FileResponse(os.path.join(STATIC_DIR, "login.html"))
+async def read_root(request: Request):
+    return templates.TemplateResponse("login.html", {"request": request})
 
 @app.get("/dashboard")
 async def read_dashboard(request: Request, db: Session = Depends(auth.get_db)):
@@ -55,11 +87,112 @@ async def read_dashboard(request: Request, db: Session = Depends(auth.get_db)):
     
     user = db.query(models.User).filter(models.User.id == user_id).first()
     overlay_url = f"{settings.APP_BASE_URL}/overlay/{user.id}"
+    
+    # Ensure user has settings, create if they don't for some reason
+    if not user.settings:
+        user.settings = models.Setting()
+        db.commit()
 
-    return templates.TemplateResponse("dashboard.html", {"request": request, "user": user, "overlay_url": overlay_url})
+    return templates.TemplateResponse("dashboard.html", {
+        "request": request, 
+        "user": user, 
+        "overlay_url": overlay_url, 
+        "current_theme": user.settings.overlay_theme, 
+        "settings": settings,
+        "custom_themes": user.custom_themes
+    })
 
 @app.get("/logout")
 async def logout(request: Request):
     # Clear the session cookie
     request.session.clear()
-    return RedirectResponse(url="/")
+    return RedirectResponse(url="/")
+
+@app.get("/help/css")
+async def css_help(request: Request):
+    return templates.TemplateResponse("help_css.html", {"request": request})
+
+@app.get("/overlay/{user_id}")
+async def read_overlay(request: Request, user_id: int, theme_override: str = None, db: Session = Depends(auth.get_db)):
+    # This endpoint serves the overlay page.
+    user = db.query(models.User).filter(models.User.id == user_id).first()
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    theme_name = "dark-purple" # Default theme
+    if theme_override:
+        theme_name = theme_override
+    elif user.settings and user.settings.overlay_theme:
+        theme_name = user.settings.overlay_theme
+
+    # Check if it's a custom theme
+    if theme_name.startswith("custom-"):
+        theme_id = int(theme_name.split("-")[1])
+        theme = db.query(models.CustomTheme).filter(models.CustomTheme.id == theme_id, models.CustomTheme.owner_id == user.id).first()
+        if not theme:
+            raise HTTPException(status_code=404, detail="Custom theme not found")
+        # Use a generic overlay template that will link to the dynamic CSS
+        return templates.TemplateResponse("overlay-custom.html", {"request": request, "theme_id": theme.id})
+
+    return templates.TemplateResponse(f"overlay-{theme_name}.html", {"request": request})
+
+@app.post("/api/settings")
+async def update_settings(settings_data: schemas.SettingsUpdate, request: Request, db: Session = Depends(auth.get_db)):
+    user_id = request.session.get('user_id')
+    if not user_id:
+        raise HTTPException(status_code=401, detail="Not authenticated")
+
+    user = db.query(models.User).filter(models.User.id == user_id).first()
+    if not user.settings:
+        user.settings = models.Setting()
+    
+    user.settings.overlay_theme = settings_data.overlay_theme
+    db.commit()
+    
+    return {"message": "Settings updated successfully"}
+
+@app.post("/api/themes", response_model=schemas.CustomTheme)
+async def create_theme(theme_data: schemas.CustomThemeCreate, request: Request, db: Session = Depends(auth.get_db)):
+    user_id = request.session.get('user_id')
+    if not user_id:
+        raise HTTPException(status_code=401, detail="Not authenticated")
+    
+    new_theme = models.CustomTheme(**theme_data.dict(), owner_id=user_id)
+    db.add(new_theme)
+    db.commit()
+    db.refresh(new_theme)
+    return new_theme
+
+@app.delete("/api/themes/{theme_id}")
+async def delete_theme(theme_id: int, request: Request, db: Session = Depends(auth.get_db)):
+    user_id = request.session.get('user_id')
+    if not user_id:
+        raise HTTPException(status_code=401, detail="Not authenticated")
+
+    theme = db.query(models.CustomTheme).filter(models.CustomTheme.id == theme_id, models.CustomTheme.owner_id == user_id).first()
+    if not theme:
+        raise HTTPException(status_code=404, detail="Theme not found")
+
+    db.delete(theme)
+    db.commit()
+    return {"message": "Theme deleted successfully"}
+
+@app.get("/css/custom/{theme_id}")
+async def get_custom_css(theme_id: int, db: Session = Depends(auth.get_db)):
+    theme = db.query(models.CustomTheme).filter(models.CustomTheme.id == theme_id).first()
+    if not theme:
+        raise HTTPException(status_code=404, detail="Custom theme not found")
+    
+    return Response(content=theme.css_content, media_type="text/css")
+
+@app.websocket("/ws/{user_id}")
+async def websocket_endpoint(websocket: WebSocket, user_id: int):
+    manager = websocket.app.state.websocket_manager
+    await manager.connect(user_id, websocket)
+    try:
+        while True:
+            # Keep the connection alive
+            await websocket.receive_text()
+    except Exception:
+        manager.disconnect(user_id, websocket)
+        print(f"WebSocket for user {user_id} disconnected.")

models.py

@@ -16,12 +16,24 @@ class User(Base):
     encrypted_tokens = Column(Text, nullable=False)
 
     settings = relationship("Setting", back_populates="owner", uselist=False)
+    custom_themes = relationship("CustomTheme", back_populates="owner")
 
 class Setting(Base):
     __tablename__ = "settings"
 
     id = Column(Integer, primary_key=True, index=True)
     custom_css = Column(Text, nullable=True)
+    overlay_theme = Column(String, default="dark-purple")
     user_id = Column(Integer, ForeignKey("users.id"))
 
-    owner = relationship("User", back_populates="settings")
+    owner = relationship("User", back_populates="settings")
+
+class CustomTheme(Base):
+    __tablename__ = "custom_themes"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, nullable=False)
+    css_content = Column(Text, nullable=False)
+    owner_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+
+    owner = relationship("User", back_populates="custom_themes")

requirements.txt

@@ -5,4 +5,7 @@ httpx
 cryptography
 python-dotenv
 itsdangerous
-jinja2
+jinja2
+pydantic
+python-jose[cryptography]
+twitchio==3.1.0

schemas.py

@@ -0,0 +1,19 @@
+from pydantic import BaseModel
+
+class SettingsUpdate(BaseModel):
+    overlay_theme: str
+
+class CustomThemeBase(BaseModel):
+    name: str
+    css_content: str
+
+class CustomThemeCreate(CustomThemeBase):
+    pass
+
+class CustomTheme(CustomThemeBase):
+    id: int
+    owner_id: int
+
+    class Config:
+        # This allows the Pydantic model to be created from a SQLAlchemy ORM object
+        from_attributes = True

static/css/main.css

@@ -0,0 +1,291 @@
+/* --- Theme Variables and CSS Reset --- */
+
+:root,
+[data-theme="dark"] {
+  --background-color: #1a1a2e;
+  --surface-color: #16213e;
+  --text-color: #e0e0e0;
+  --text-muted-color: #a0a0a0;
+  --text-inverted-color: #ffffff;
+  --border-color: #4f4f7a;
+  --primary-color: #7f5af0;
+  --primary-hover-color: #6a48d7;
+}
+
+[data-theme="light"] {
+  --background-color: #f0f2f5;
+  --surface-color: #ffffff;
+  --text-color: #1c1e21;
+  --text-muted-color: #606770;
+  --text-inverted-color: #ffffff;
+  --border-color: #dddfe2;
+  --primary-color: #7f5af0;
+  --primary-hover-color: #6a48d7;
+}
+
+/* Box-sizing reset */
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+/* Reset margins and paddings on most elements */
+body,
+h1,
+h2,
+h3,
+h4,
+h5,
+h6,
+p,
+figure,
+blockquote,
+dl,
+dd {
+  margin: 0;
+}
+
+/* Basic body styling */
+body {
+  min-height: 100vh;
+  line-height: 1.5;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
+    Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
+    "Segoe UI Symbol";
+  background-color: var(--background-color);
+  color: var(--text-color);
+  transition: background-color 0.2s, color 0.2s;
+}
+
+/* Make images responsive */
+img,
+picture {
+  max-width: 100%;
+  display: block;
+}
+
+/* General Container for login and dashboard */
+.container {
+  width: 100%;
+  max-width: 960px;
+  margin: 0 auto;
+  padding: 1rem;
+}
+
+/* Login Page Styles */
+.login-container {
+  width: 100%;
+  padding: 1rem;
+}
+
+.login-box {
+  width: 100%;
+  max-width: 400px;
+  margin: 0 auto;
+  margin-top: 5vh;
+  padding: 2.5rem;
+  background-color: var(--surface-color);
+  border-radius: 12px;
+  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
+  text-align: center;
+}
+
+.login-box h1 {
+  color: var(--text-color);
+  margin-bottom: 0.5rem;
+}
+
+.login-box p {
+  margin-bottom: 2rem;
+  color: var(--text-muted-color);
+}
+
+.input-group {
+  margin-bottom: 1.5rem;
+  text-align: left;
+}
+
+.input-group label {
+  display: block;
+  margin-bottom: 0.5rem;
+  font-size: 0.9rem;
+  color: var(--text-muted-color);
+}
+
+.input-group input {
+  width: 100%;
+  padding: 0.75rem 1rem;
+  background-color: var(--background-color);
+  border: 1px solid var(--border-color);
+  border-radius: 6px;
+  color: var(--text-color);
+  font-size: 1rem;
+}
+
+.btn-primary {
+  width: 100%;
+  padding: 0.75rem;
+  border: none;
+  border-radius: 6px;
+  background-color: var(--primary-color);
+  color: var(--text-inverted-color);
+  font-size: 1.1rem;
+  font-weight: bold;
+  cursor: pointer;
+  transition: background-color 0.2s ease;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.btn-primary:hover {
+  background-color: var(--primary-hover-color);
+}
+
+.login-footer {
+  margin-top: 1.5rem;
+}
+
+.login-footer a {
+  color: var(--primary-color);
+  text-decoration: none;
+  font-size: 0.9rem;
+}
+
+.login-footer a:hover {
+  text-decoration: underline;
+}
+
+/* Header Styles */
+.logo h1 {
+  font-size: 1.5rem;
+  color: var(--text-color);
+}
+.logo {
+  text-decoration: none;
+}
+
+.main-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding-bottom: 1rem;
+  border-bottom: 1px solid var(--border-color);
+  width: 100%;
+  margin-bottom: 2rem;
+}
+
+.header-actions {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+}
+
+.logout-btn {
+  display: inline-block;
+  padding: 0.5rem 1rem;
+  background-color: var(--primary-color);
+  color: var(--text-inverted-color);
+  text-decoration: none;
+  border-radius: 6px;
+  font-weight: 500;
+  transition: background-color 0.2s ease;
+}
+
+.logout-btn:hover {
+  background-color: var(--primary-hover-color);
+}
+
+.theme-btn {
+  background: none;
+  border: none;
+  color: var(--text-color);
+  cursor: pointer;
+  padding: 5px;
+  border-radius: 50%;
+}
+.theme-btn:hover {
+  background-color: var(--surface-color);
+}
+[data-theme="light"] .moon-icon { display: block; }
+[data-theme="light"] .sun-icon { display: none; }
+[data-theme="dark"] .moon-icon { display: none; }
+[data-theme="dark"] .sun-icon { display: block; }
+
+/* Dashboard Card Styles */
+.card {
+  background-color: var(--surface-color);
+  padding: 1.5rem;
+  border-radius: 8px;
+  margin-bottom: 1.5rem;
+  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+}
+.card h2 {
+  margin-top: 0;
+  margin-bottom: 0.5rem;
+}
+.card p {
+  margin-top: 0;
+  color: var(--text-muted-color);
+}
+
+/* Custom Theme Form Styles */
+.theme-form {
+    margin-top: 2rem;
+    padding-top: 1.5rem;
+    border-top: 1px solid var(--border-color);
+}
+
+.form-group {
+    margin-bottom: 1rem;
+}
+
+.form-group label {
+    display: block;
+    margin-bottom: 0.5rem;
+    font-weight: 500;
+}
+
+.form-group input[type="text"],
+.form-group textarea {
+    width: 100%;
+    padding: 0.75rem;
+    border: 1px solid var(--border-color);
+    background-color: var(--background-color);
+    color: var(--text-color);
+    border-radius: 6px;
+    font-family: inherit;
+    font-size: 1rem;
+}
+
+.custom-theme-item {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 0.75rem;
+    border-radius: 6px;
+    margin-bottom: 0.5rem;
+    background-color: var(--background-color);
+}
+
+.delete-theme-btn {
+    background-color: #e43f5a;
+    color: white;
+    border: none;
+    padding: 0.3rem 0.8rem;
+    border-radius: 4px;
+    cursor: pointer;
+}
+
+/* Styles for help page code examples */
+pre {
+    background-color: var(--background-color);
+    border: 1px solid var(--border-color);
+    padding: 1rem;
+    border-radius: 6px;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+    font-family: monospace;
+}
+}

static/css/overlay-base.css

@@ -0,0 +1,12 @@
+body {
+    background-color: transparent;
+    font-family: 'Inter', sans-serif;
+    font-size: 16px;
+    margin: 0;
+    overflow: hidden;
+}
+
+.chat-container {
+    padding: 10px;
+    height: 100vh;
+}

static/css/overlay-bright-green.css

@@ -0,0 +1,28 @@
+body {
+    background-color: transparent;
+    color: #f0f0f0;
+    font-family: 'Inter', sans-serif;
+    font-size: 16px;
+    margin: 0;
+    padding: 10px;
+    overflow: hidden;
+    text-shadow: 0 0 5px rgba(57, 255, 20, 0.5);
+}
+
+.chat-container {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+}
+
+.chat-message {
+    padding: 6px 10px;
+    background-color: rgba(10, 30, 10, 0.6);
+    border-radius: 6px;
+    border-left: 3px solid #39FF14; /* Neon green accent */
+}
+
+.username {
+    font-weight: 800;
+    color: #39FF14; /* Neon green */
+}

static/css/overlay-dark-purple.css

@@ -0,0 +1,28 @@
+body {
+    background-color: transparent;
+    color: #e0e0e0;
+    font-family: 'Inter', sans-serif;
+    font-size: 16px;
+    margin: 0;
+    padding: 10px;
+    overflow: hidden;
+    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.6);
+}
+
+.chat-container {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+}
+
+.chat-message {
+    padding: 6px 10px;
+    background-color: rgba(26, 26, 46, 0.7); /* Dark blue/purple transparent background */
+    border-radius: 6px;
+    border: 1px solid rgba(127, 90, 240, 0.3);
+}
+
+.username {
+    font-weight: 800;
+    color: #a970ff; /* Twitch-like purple */
+}

static/dashboard.html

@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Dashboard - MultiChatOverlay</title>
-    <link rel="stylesheet" href="/static/style.css">
-</head>
-<body>
-    <div class="container">
-        <h1>Dashboard</h1>
-        <p>Welcome! You are successfully logged in.</p>
-        <p><a href="/logout">Logout</a></p>
-    </div>
-</body>
-</html>

static/overlay-bright-green.css

@@ -0,0 +1,26 @@
+body {
+    background-color: transparent;
+    color: #1a1a1a; /* Dark text for readability on light backgrounds */
+    font-family: 'Inter', sans-serif;
+    font-size: 18px;
+    margin: 0;
+    padding: 10px;
+    font-weight: 600;
+    -webkit-text-stroke: 0.5px white; /* White outline for text */
+    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.5);
+}
+.chat-container {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+}
+.chat-message {
+    padding: 5px 10px;
+    background-color: rgba(240, 240, 240, 0.5); /* Semi-transparent light background */
+    border-radius: 5px;
+    border-left: 3px solid #00ff7f; /* Spring green accent */
+}
+.username {
+    font-weight: 800;
+    color: #008000; /* Dark green for usernames */
+}

static/overlay-dark-purple.css

@@ -0,0 +1,24 @@
+body {
+    background-color: transparent;
+    color: #e6edf3; /* Light text for dark backgrounds */
+    font-family: 'Inter', sans-serif;
+    font-size: 16px;
+    margin: 0;
+    padding: 10px;
+    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.9);
+}
+.chat-container {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+}
+.chat-message {
+    padding: 4px 8px;
+    background-color: rgba(22, 27, 34, 0.6); /* Semi-transparent dark background */
+    border-radius: 4px;
+    border-left: 3px solid #9146FF; /* Twitch purple accent */
+}
+.username {
+    font-weight: 800;
+    color: #a970ff; /* Lighter purple for usernames */
+}

templates/base.html

@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>{% block title %}MultiChat Overlay{% endblock %}</title>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap" rel="stylesheet">
+    <link rel="stylesheet" href="{{ url_for('static', path='css/main.css') }}">
+</head>
+<body>
+    <div class="container">
+        <header class="main-header">
+            <a href="/" class="logo"><h1>MultiChat Overlay</h1></a>
+            <div class="header-actions">
+                <button id="theme-toggle" class="theme-btn" title="Toggle theme">
+                    <svg class="sun-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="24" height="24"><path d="M12 7c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5zM2 13h2c.55 0 1-.45 1-1s-.45-1-1-1H2c-.55 0-1 .45-1 1s.45 1 1 1zm18 0h2c.55 0 1-.45 1-1s-.45-1-1-1h-2c-.55 0-1 .45-1 1s.45 1 1 1zM11 2v2c0 .55.45 1 1 1s1-.45 1-1V2c0-.55-.45-1-1-1s-1 .45-1 1zm0 18v2c0 .55.45 1 1 1s1-.45 1-1v-2c0-.55-.45-1-1-1s-1 .45-1 1zM5.64 5.64c-.39-.39-1.02-.39-1.41 0-.39.39-.39 1.02 0 1.41l1.06 1.06c.39.39 1.02.39 1.41 0s.39-1.02 0-1.41L5.64 5.64zm12.72 12.72c-.39-.39-1.02-.39-1.41 0-.39.39-.39 1.02 0 1.41l1.06 1.06c.39.39 1.02.39 1.41 0 .39-.39.39-1.02 0-1.41l-1.06-1.06zM5.64 18.36l-1.06-1.06c-.39-.39-.39-1.02 0-1.41s1.02-.39 1.41 0l1.06 1.06c.39.39.39 1.02 0 1.41s-1.02.39-1.41 0zm12.72-12.72l-1.06-1.06c-.39-.39-.39-1.02 0-1.41s1.02-.39 1.41 0l1.06 1.06c.39.39.39 1.02 0 1.41-.39.39-1.02.39-1.41 0z"></path></svg>
+                    <svg class="moon-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="24" height="24"><path d="M9.37 5.51A7.35 7.35 0 0 0 9 6c0 4.42 3.58 8 8 8 .36 0 .72-.02 1.08-.06A7.5 7.5 0 0 1 9.37 5.51zM12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10A9.96 9.96 0 0 0 12 2z"></path></svg>
+                </button>
+                {% if user %}
+                <a href="/logout" class="logout-btn">Logout</a>
+                {% endif %}
+            </div>
+        </header>
+        {% block content %}{% endblock %}
+    </div>
+
+    <script>
+        (function() {
+            const themeToggle = document.getElementById('theme-toggle');
+            const getTheme = () => {
+                const storedTheme = localStorage.getItem('theme');
+                if (storedTheme) return storedTheme;
+                // For new visitors, default to dark mode regardless of their OS setting.
+                return 'dark';
+            };
+
+            const setTheme = (theme) => {
+                document.documentElement.setAttribute('data-theme', theme);
+                localStorage.setItem('theme', theme);
+            };
+
+            themeToggle.addEventListener('click', () => {
+                const currentTheme = document.documentElement.getAttribute('data-theme');
+                const newTheme = currentTheme === 'light' ? 'dark' : 'light';
+                setTheme(newTheme);
+            });
+
+            // Set initial theme on page load
+            setTheme(getTheme());
+        })();
+    </script>
+</body>
+</html>

templates/dashboard.html

@@ -0,0 +1,240 @@
+{% extends "base.html" %}
+
+{% block title %}Dashboard - {{ super() }}{% endblock %}
+
+{% block content %}
+<div class="card">
+    <h2>Welcome, {{ user.username }}!</h2>
+    <p>This is your personal dashboard. Here you can manage your overlay settings and find your unique URL.</p>
+</div>
+
+<div class="card">
+    <h2>Your Overlay URL</h2>
+    <p>Copy this URL and add it as a "Browser Source" in your streaming software (e.g., OBS, Streamlabs).</p>
+    <div class="url-box">
+        <input type="text" id="overlayUrl" value="{{ overlay_url }}" readonly>
+        <button id="copyButton" class="btn">Copy</button>
+    </div>
+</div>
+
+<div class="card">
+    <h2>Overlay Theme</h2>
+    <p>Choose a theme for your chat overlay. Your selection will be saved automatically.</p>
+    <div class="theme-selector-container">
+        <div class="theme-options">
+            <label for="theme-select">Select a theme:</label>
+            <select id="theme-select" name="theme">
+                <option value="dark-purple" {% if current_theme == 'dark-purple' %}selected{% endif %}>Dark Purple</option>
+                <option value="bright-green" {% if current_theme == 'bright-green' %}selected{% endif %}>Bright Green</option>
+                <option value="minimal-light" {% if current_theme == 'minimal-light' %}selected{% endif %}>Minimal Light</option>
+                <option value="hacker-green" {% if current_theme == 'hacker-green' %}selected{% endif %}>Hacker Green</option>
+                {% if custom_themes %}
+                <optgroup label="Your Themes">
+                    {% for theme in custom_themes %}
+                    <option value="custom-{{ theme.id }}" {% if current_theme == 'custom-' ~ theme.id %}selected{% endif %}>{{ theme.name }}</option>
+                    {% endfor %}
+                </optgroup>
+                {% endif %}
+            </select>
+        </div>
+        <div class="theme-preview">
+            <h3>Preview</h3>
+            <iframe id="theme-preview-frame" src="" frameborder="0" scrolling="no"></iframe>
+        </div>
+    </div>
+</div>
+
+<div class="card">
+    <h2>
+        Custom Themes 
+        <a href="/help/css" target="_blank" class="help-link" title="Open CSS guide in new window">(?)</a>
+    </h2>
+    <p>Create your own themes with CSS. These are private to your account.</p>
+    
+    <div id="custom-themes-list">
+        {% for theme in custom_themes %}
+        <div class="custom-theme-item" id="theme-item-{{ theme.id }}">
+            <span>{{ theme.name }}</span>
+            <button class="delete-theme-btn" data-theme-id="{{ theme.id }}">Delete</button>
+        </div>
+        {% endfor %}
+    </div>
+
+    <form id="theme-form" class="theme-form">
+        <h3>Create New Theme</h3>
+        <div class="form-group">
+            <label for="theme-name">Theme Name</label>
+            <input type="text" id="theme-name" name="name" required>
+        </div>
+        <div class="form-group">
+            <label for="theme-css">CSS Content</label>
+            <textarea id="theme-css" name="css_content" rows="8" required placeholder="body { color: red; }"></textarea>
+        </div>
+        <button type="submit" class="btn-primary">Save Theme</button>
+    </form>
+</div>
+
+<style>
+    .help-link {
+        font-size: 0.9rem;
+        vertical-align: middle;
+        text-decoration: none;
+        color: var(--primary-color);
+    }
+    .url-box {
+        display: flex;
+        gap: 10px;
+    }
+    .url-box input {
+        flex-grow: 1;
+        padding: 10px;
+        border: 1px solid var(--border-color);
+        background-color: var(--background-color);
+        color: var(--text-color);
+        border-radius: 6px;
+        font-family: monospace;
+    }
+    .theme-selector-container {
+        display: grid;
+        grid-template-columns: 1fr 1fr;
+        gap: 2rem;
+        align-items: start;
+    }
+    .theme-options select {
+        width: 100%;
+        padding: 10px;
+        border-radius: 6px;
+        border: 1px solid var(--border-color);
+        background-color: var(--surface-color);
+        color: var(--text-color);
+        font-size: 1rem;
+    }
+    .theme-preview {
+        border: 1px solid var(--border-color);
+        border-radius: 8px;
+        background-color: var(--background-color);
+    }
+    .theme-preview h3 {
+        margin: 0;
+        padding: 0.75rem 1rem;
+        font-size: 1rem;
+        border-bottom: 1px solid var(--border-color);
+    }
+    #theme-preview-frame {
+        width: 100%;
+        height: 150px;
+        border-radius: 0 0 8px 8px;
+    }
+</style>
+
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    // --- Copy URL Logic ---
+    const copyButton = document.getElementById('copyButton');
+    const overlayUrlInput = document.getElementById('overlayUrl');
+    copyButton.addEventListener('click', () => {
+        overlayUrlInput.select();
+        document.execCommand('copy');
+        copyButton.textContent = 'Copied!';
+        setTimeout(() => { copyButton.textContent = 'Copy'; }, 2000);
+    });
+
+    // --- Theme Selector Logic ---
+    const themeSelect = document.getElementById('theme-select');
+    const previewFrame = document.getElementById('theme-preview-frame');
+    const baseUrl = "{{ settings.APP_BASE_URL }}";
+    const userId = "{{ user.id }}";
+
+    // Function to update preview and save settings
+    function updateTheme(selectedTheme) {
+        // Update iframe preview
+        previewFrame.src = `${baseUrl}/overlay/${userId}?theme_override=${selectedTheme}`;
+
+        // Save the setting to the backend
+        fetch('/api/settings', {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            },
+            body: JSON.stringify({ overlay_theme: selectedTheme }),
+        })
+        .then(response => response.json())
+        .then(data => {
+            console.log('Settings saved:', data.message);
+        })
+        .catch(error => console.error('Error saving settings:', error));
+    }
+
+    // Event listener for dropdown change
+    themeSelect.addEventListener('change', (event) => {
+        updateTheme(event.target.value);
+    });
+
+    // Set initial preview on page load
+    updateTheme(themeSelect.value);
+
+    // --- Custom Theme Creation Logic ---
+    const themeForm = document.getElementById('theme-form');
+    themeForm.addEventListener('submit', function(event) {
+        event.preventDefault();
+        const formData = new FormData(themeForm);
+        const data = Object.fromEntries(formData.entries());
+
+        fetch('/api/themes', {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify(data),
+        })
+        .then(response => response.json())
+        .then(newTheme => {
+            // Add new theme to the list and dropdown without reloading
+            addThemeToList(newTheme);
+            addThemeToSelect(newTheme);
+            themeForm.reset(); // Clear the form
+        })
+        .catch(error => console.error('Error creating theme:', error));
+    });
+
+    // --- Custom Theme Deletion Logic ---
+    const themesListContainer = document.getElementById('custom-themes-list');
+    themesListContainer.addEventListener('click', function(event) {
+        if (event.target.classList.contains('delete-theme-btn')) {
+            const themeId = event.target.dataset.themeId;
+            if (confirm('Are you sure you want to delete this theme?')) {
+                fetch(`/api/themes/${themeId}`, { method: 'DELETE' })
+                .then(response => {
+                    if (response.ok) {
+                        // Remove theme from the list and dropdown
+                        document.getElementById(`theme-item-${themeId}`).remove();
+                        document.querySelector(`#theme-select option[value="custom-${themeId}"]`).remove();
+                    }
+                })
+                .catch(error => console.error('Error deleting theme:', error));
+            }
+        }
+    });
+
+    function addThemeToList(theme) {
+        const list = document.getElementById('custom-themes-list');
+        const item = document.createElement('div');
+        item.className = 'custom-theme-item';
+        item.id = `theme-item-${theme.id}`;
+        item.innerHTML = `<span>${theme.name}</span><button class="delete-theme-btn" data-theme-id="${theme.id}">Delete</button>`;
+        list.appendChild(item);
+    }
+
+    function addThemeToSelect(theme) {
+        let optgroup = document.querySelector('#theme-select optgroup[label="Your Themes"]');
+        if (!optgroup) {
+            optgroup = document.createElement('optgroup');
+            optgroup.label = 'Your Themes';
+            themeSelect.appendChild(optgroup);
+        }
+        const option = document.createElement('option');
+        option.value = `custom-${theme.id}`;
+        option.textContent = theme.name;
+        optgroup.appendChild(option);
+    }
+});
+</script>
+{% endblock %}

templates/help_css.html

@@ -0,0 +1,46 @@
+{% extends "base.html" %}
+
+{% block title %}CSS Overlay Help - {{ super() }}{% endblock %}
+
+{% block content %}
+<div class="card">
+    <h2>Custom Overlay CSS Guide</h2>
+    <p>This guide will help you create your own custom CSS for the chat overlay. Your CSS is applied on top of a base stylesheet, so you only need to override the styles you want to change.</p>
+</div>
+
+<div class="card">
+    <h3>HTML Structure</h3>
+    <p>Your CSS will be applied to a simple HTML structure. Here are the key classes you can target:</p>
+    <ul>
+        <li><code>.chat-container</code>: The main container holding all messages.</li>
+        <li><code>.chat-message</code>: The container for a single message, including the username and text.</li>
+        <li><code>.username</code>: The part of the message that shows the chatter's name.</li>
+        <li><code>.message-text</code>: The actual content of the chat message.</li>
+    </ul>
+    <p>The <code>body</code> of the overlay is transparent by default, so you only need to style the message elements.</p>
+</div>
+
+<div class="card">
+    <h3>Example: "Bubbly" Theme</h3>
+    <p>Here is a simple example to get you started. This creates chat bubbles with a gradient background.</p>
+    <pre><code>body {
+    font-family: 'Comic Sans MS', cursive, sans-serif;
+    font-size: 18px;
+    text-shadow: 1px 1px 2px #333;
+}
+
+.chat-message {
+    background: linear-gradient(135deg, #7f5af0, #a970ff);
+    color: white;
+    padding: 10px 15px;
+    border-radius: 20px;
+    margin-bottom: 10px;
+    display: inline-block;
+}
+
+.username {
+    font-weight: bold;
+    color: #e0e0e0;
+}</code></pre>
+</div>
+{% endblock %}

templates/login.html

@@ -0,0 +1,16 @@
+{% extends "base.html" %}
+
+{% block title %}Login - MultiChat Overlay{% endblock %}
+
+{% block content %}
+<div class="login-container">
+    <div class="login-box">
+        <h1>MultiChat Overlay</h1>
+        <p>Connect your streaming accounts to get started.</p>
+        <a href="/login/twitch" class="btn-primary twitch-btn">
+            <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="currentColor" style="margin-right: 10px;"><path d="M11.571 4.714h1.715v5.143H11.57zm4.715 0h1.714v5.143h-1.714zM6 0L1.714 4.286v15.428h5.143V24l4.286-4.286h3.428L22.286 12V0H6zm14.571 11.143l-3.428 3.428h-3.429l-3 3v-3H6.857V1.714h13.714v9.429z"></path></svg>
+            Login with Twitch
+        </a>
+    </div>
+</div>
+{% endblock %}

templates/overlay-bright-green.html

@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Chat Overlay - Bright Green</title>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap" rel="stylesheet">
+    <link rel="stylesheet" href="{{ url_for('static', path='css/overlay-bright-green.css') }}">
+</head>
+<body>
+    <div class="chat-container">
+        <div class="chat-message"><span class="username">Streamer:</span> This is the bright green theme!</div>
+        <div class="chat-message"><span class="username">VerdantViewer:</span> Looks so fresh and clean!</div>
+        <div class="chat-message"><span class="username">NightBot:</span> Welcome to the channel!</div>
+    </div>
+</body>
+</html>

templates/overlay-custom.html

@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Custom Chat Overlay</title>
+    <link rel="stylesheet" href="{{ url_for('static', path='css/overlay-base.css') }}">
+    <link rel="stylesheet" href="/css/custom/{{ theme_id }}">
+</head>
+<body>
+    <div class="chat-container">
+        <!-- Chat messages will be injected here by the WebSocket client -->
+    </div>
+</body>
+</html>

templates/overlay-dark-purple.html

@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Chat Overlay - Dark Purple</title>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap" rel="stylesheet">
+    <link rel="stylesheet" href="{{ url_for('static', path='css/overlay-dark-purple.css') }}">
+</head>
+<body>
+    <div class="chat-container">
+        <div class="chat-message"><span class="username">Streamer:</span> This is the dark purple theme!</div>
+        <div class="chat-message"><span class="username">PurpleHaze:</span> Very cool, feels like Twitch!</div>
+        <div class="chat-message"><span class="username">NightBot:</span> Welcome to the channel!</div>
+    </div>
+</body>
+</html>

templates/overlay-hacker-green.html

@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Hacker Green Overlay</title>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=VT323&display=swap" rel="stylesheet">
+    <style>
+        body {
+            background-color: transparent;
+            color: #0f0;
+            font-family: 'VT323', monospace;
+            font-size: 20px;
+            margin: 0;
+            padding: 10px;
+            overflow: hidden;
+            text-shadow: 0 0 5px #0f0;
+        }
+        .chat-container {
+            display: flex;
+            flex-direction: column;
+            gap: 5px;
+        }
+        .username {
+            font-weight: bold;
+        }
+    </style>
+</head>
+<body>
+    <div id="chat-container" class="chat-container">
+        <!-- Messages will be injected here -->
+    </div>
+
+    <script>
+        const userId = window.location.pathname.split('/')[2];
+        const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
+        const ws = new WebSocket(`${wsProtocol}//${window.location.host}/ws/${userId}`);
+
+        ws.onmessage = function(event) {
+            const messageData = JSON.parse(event.data);
+            const chatContainer = document.getElementById('chat-container');
+            const messageElement = document.createElement('div');
+            messageElement.innerHTML = `<span class="username">${messageData.author}:</span> ${messageData.text}`;
+            chatContainer.appendChild(messageElement);
+        };
+    </script>
+</body>
+</html>

templates/overlay-minimal-light.html

@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Minimal Light Overlay</title>
+    <style>
+        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');
+        body {
+            background-color: rgba(0, 0, 0, 0);
+            color: #111827;
+            font-family: 'Inter', sans-serif;
+            font-size: 16px;
+            margin: 0;
+            padding: 10px;
+            overflow: hidden;
+        }
+        .chat-message {
+            background-color: rgba(255, 255, 255, 0.8);
+            border-radius: 8px;
+            padding: 8px 12px;
+            margin-bottom: 8px;
+            backdrop-filter: blur(4px);
+            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
+        }
+        .username {
+            font-weight: 600;
+        }
+    </style>
+</head>
+<body>
+    <!-- Example Message -->
+    <div class="chat-message">
+        <span class="username">User:</span>
+        <span class="message">This is the minimal light theme.</span>
+    </div>
+</body>
+</html>

templates/overlay.html

@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Chat Overlay</title>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap" rel="stylesheet">
+    <style>
+        body {
+            background-color: transparent;
+            color: white;
+            font-family: 'Inter', sans-serif;
+            font-size: 16px;
+            margin: 0;
+            padding: 10px;
+            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
+        }
+        .chat-container {
+            display: flex;
+            flex-direction: column;
+            gap: 8px;
+        }
+        .chat-message {
+            padding: 4px 8px;
+            background-color: rgba(0, 0, 0, 0.4);
+            border-radius: 4px;
+        }
+        .username {
+            font-weight: 800;
+            color: #a970ff; /* A nice purple for usernames */
+        }
+    </style>
+</head>
+<body>
+    <div class="chat-container">
+        <div class="chat-message"><span class="username">User123:</span> This is an example chat message!</div>
+        <div class="chat-message"><span class="username">StreamFan:</span> Looks great! Can't wait to use this.</div>
+        <div class="chat-message"><span class="username">AnotherViewer:</span> Hello world!</div>
+    </div>
+</body>
+</html>

templates/overlay_test.html

@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Live Test Overlay</title>
+    <style>
+        body {
+            background-color: black;
+            color: white;
+            font-family: sans-serif;
+            margin: 0;
+            padding: 20px;
+        }
+        .message {
+            margin-bottom: 10px;
+        }
+    </style>
+</head>
+<body>
+    <h1>Live Test Overlay</h1>
+    <div id="chat-messages">
+        <!-- Messages will appear here -->
+    </div>
+
+    <script>
+        // JavaScript to connect to WebSocket and display messages will go here
+    </script>
+</body>
+</html>

websocket_manager.py

@@ -0,0 +1,22 @@
+from typing import Dict, List
+from fastapi import WebSocket
+
+class WebSocketManager:
+    def __init__(self):
+        # Maps user_id to a list of active WebSocket connections
+        self.active_connections: Dict[int, List[WebSocket]] = {}
+        print("WebSocketManager initialized.")
+
+    async def connect(self, user_id: int, websocket: WebSocket):
+        await websocket.accept()
+        if user_id not in self.active_connections:
+            self.active_connections[user_id] = []
+        self.active_connections[user_id].append(websocket)
+
+    def disconnect(self, user_id: int, websocket: WebSocket):
+        self.active_connections[user_id].remove(websocket)
+
+    async def broadcast_to_user(self, user_id: int, message: dict):
+        if user_id in self.active_connections:
+            for connection in self.active_connections[user_id]:
+                await connection.send_json(message)