graph TB
        subgraph Frontend["Frontend (Next.js)"]
            UI[Chat Interface]
            State[React State Management]
            API[Axios API Client]
        end

        subgraph Backend["Backend (FastAPI)"]
            FastAPI[FastAPI Server]
            SearchEngine[Neo4j Search Engine]
            LLM[GPT-4 Integration]
            QueryEmbedding[Query Embedding Service]
        end

        subgraph DataSources["Data Sources"]
            SQL[(SQLite Database)]
            PDF[PDF Documents]
        end

        subgraph EmbeddingProcess["Embedding Process"]
            ArtistEmbed[Artist Embedding]
            AgentEmbed[Sales Agent Embedding]
            DocEmbed[Document Embedding]
            TextSplitter[Text Splitter]
        end

        subgraph Database["Knowledge Graph (Neo4j)"]
            Neo4j[(Neo4j Database)]
            Artists[Artist Nodes]
            Agents[Sales Agent Nodes]
            Documents[Document Nodes]
            Relationships{Graph Relationships}
        end

        %% Frontend Flow
        UI --> State
        State --> API
        API -->|HTTP POST| FastAPI

        %% Data Source Processing
        SQL -->|Extract Data| ArtistEmbed
        SQL -->|Extract Data| AgentEmbed
        PDF -->|Load| TextSplitter
        TextSplitter -->|Chunks| DocEmbed

        %% Embedding Process
        ArtistEmbed -->|Embedded Data| Artists
        AgentEmbed -->|Embedded Data| Agents
        DocEmbed -->|Embedded Data| Documents

        %% Query Processing
        FastAPI -->|User Query| QueryEmbedding
        QueryEmbedding -->|Search Similar| SearchEngine
        SearchEngine -->|Graph Query| Neo4j
        SearchEngine -->|Generate Response| LLM

        %% Database Relationships
        Artists -->|MANAGED| Relationships
        Agents -->|MENTIONS| Relationships
        Documents -->|RELATED_TO| Relationships

        %% Response Flow
        LLM -->|Structured Response| FastAPI
        FastAPI -->|JSON| API
        API -->|Update| State
        State -->|Render| UI

        classDef frontend fill:#6366f1,color:#fff,stroke:#4338ca
        classDef backend fill:#16a34a,color:#fff,stroke:#15803d
        classDef database fill:#0891b2,color:#fff,stroke:#0e7490
        classDef process fill:#8b5cf6,color:#fff,stroke:#7c3aed
        classDef datasource fill:#ea580c,color:#fff,stroke:#c2410c

        class UI,State,API frontend
        class FastAPI,SearchEngine,LLM,QueryEmbedding backend
        class Neo4j,Artists,Agents,Documents,Relationships database
        class ArtistEmbed,AgentEmbed,DocEmbed,TextSplitter process
        class SQL,PDF datasource