graph TB
    subgraph "Lead Management"
        LEAD[Lead]
        QUALIFY[Qualification]
        SCORE[Lead Scoring]
    end

    subgraph "Opportunity Management"
        OPP[Opportunity]
        STAGE[Pipeline Stages]
        FORECAST[Forecasting]
    end

    subgraph "Client Management"
        CLIENT[Client]
        CONTACT[Contact]
        ACCOUNT[Account]
    end

    subgraph "Sales Activities"
        TASK[Tasks]
        CALL[Calls]
        MEETING[Meetings]
        EMAIL[Emails]
    end

    LEAD --> QUALIFY
    QUALIFY --> OPP
    OPP --> STAGE
    OPP --> CLIENT

    CLIENT --> CONTACT
    CLIENT --> ACCOUNT

    OPP --> TASK
    OPP --> CALL
    OPP --> MEETING
    OPP --> EMAIL

    style LEAD fill:#e1f5fe
    style OPP fill:#fff3e0
    style CLIENT fill:#e8f5e9

erDiagram
    TENANT ||--o{ LEAD : has
    TENANT ||--o{ OPPORTUNITY : has
    TENANT ||--o{ CLIENT : has

    LEAD ||--o| OPPORTUNITY : converts_to
    LEAD }o--o| CONTACT : associated
    LEAD }o--|| USER : assigned_to

    OPPORTUNITY ||--o{ OPPORTUNITY_PRODUCT : contains
    OPPORTUNITY }o--|| CLIENT : belongs_to
    OPPORTUNITY }o--|| CONTACT : primary_contact
    OPPORTUNITY }o--|| USER : owner
    OPPORTUNITY ||--o{ ACTIVITY : has

    CLIENT ||--o{ CONTACT : has
    CLIENT ||--o{ ADDRESS : has
    CLIENT ||--o{ ORDER : places
    CLIENT }o--o| CLIENT_TYPE : categorized

    CONTACT ||--o{ ACTIVITY : participates
    CONTACT ||--o{ SUBSCRIPTION : has
    CONTACT ||--o{ ORDER : places

    ACTIVITY }o--|| USER : created_by

    LEAD {
        string id PK
        string tenantId FK
        string name
        string email
        string phone
        string company
        enum source
        enum status
        int score
        string assignedTo FK
        timestamp createdAt
        timestamp convertedAt
    }

    OPPORTUNITY {
        string id PK
        string tenantId FK
        string clientId FK
        string contactId FK
        string name
        decimal amount
        enum stage
        float probability
        timestamp expectedCloseDate
        string ownerId FK
        json customFields
    }

    CLIENT {
        string id PK
        string tenantId FK
        string name
        string email
        string phone
        string industry
        string website
        enum tier
        boolean archived
    }

    CONTACT {
        string id PK
        string clientId FK
        string firstName
        string lastName
        string email
        string phone
        string jobTitle
        boolean isPrimary
    }

pie title Lead Sources Distribution
    "Website Form" : 35
    "Referral" : 25
    "Trade Show" : 15
    "Cold Outreach" : 10
    "Social Media" : 8
    "Partner" : 7

flowchart LR
    subgraph "Pipeline Stages"
        PROSPECT[Prospecting]
        QUALIFY[Qualification]
        PROPOSAL[Proposal]
        NEGOTIATE[Negotiation]
        CLOSED[Closed]
    end

    PROSPECT --> QUALIFY
    QUALIFY --> PROPOSAL
    PROPOSAL --> NEGOTIATE
    NEGOTIATE --> CLOSED

    subgraph "Outcomes"
        CLOSED --> WON[Won]
        CLOSED --> LOST[Lost]
    end

    style WON fill:#e8f5e9
    style LOST fill:#ffebee

flowchart TB
    subgraph "CRM Domain"
        LEADS[Leads]
        OPPS[Opportunities]
        CLIENTS[Clients]
    end

    subgraph "Connected Domains"
        ORDERS[Orders]
        SUBS[Subscriptions]
        EMAIL[Email Marketing]
        SUPPORT[Support]
    end

    CLIENTS --> ORDERS
    CLIENTS --> SUBS
    LEADS --> EMAIL
    CLIENTS --> SUPPORT

    style LEADS fill:#e1f5fe
    style CLIENTS fill:#e8f5e9