blueprint.md

App Name: ZeppFusion AI

Core Features:

• Unified AI Chat Interface: A single interface that allows users to interact with both Gemini and ChatGPT 3 models. One chat window where users can type a single query and get answers from both LLMs. Firestore for chat logs, Cloud Functions for AI API calls
• Model Selection: Allow users to select which AI model (Gemini or ChatGPT 3) they want to use for each query. Dropdown or toggle (🤖 Gemini / 🧠 ChatGPT 3). User manually picks the model for that query. User setting saved in Firestore
• Contextual AI Routing: If enabled, ZeppFusion uses a tool to automatically decide which model suits the question (e.g. factual → Gemini, creative → ChatGPT). Cloud Function router script, before passing to the LLM.
• Chat History: Stores conversations separately per model and date. Firestore (Collections: /chatSessions/{sessionId}/messages)
• Response Comparison Mode: Side-by-side card layout to visually compare both AI answers. UI rendering only (no extra backend)
• Smooth UX Animation: Subtle transitions when switching models or awaiting responses. Client-side animation (Framer Motion / Flutter Lottie)

Style Guidelines:

• Primary Color - Deep Purple #673AB7
• Background - Very Light Purple #F3E5F5
• Accent - Blue #2196F3
• Font Family - 'Inter' Sans-Serif (weights 400 → 700)
• Style - Modern, minimal, slightly futuristic
• Outline-style icons (e.g., Lucide Icons)
• Subtle fade / slide / pulse during model load & switch