erDiagram
    User ||--o{ Event : "creates/manages"
    User {
        uuid id PK
        string email
        string password_hash
        string first_name
        string last_name
        string phone_number
        datetime created_at
        datetime updated_at
        boolean is_active
        boolean is_superuser
        json preferences
    }

    Event ||--o{ Guest : "invites"
    Event ||--o{ GiftItem : "contains"
    Event ||--o{ EventMedia : "has"
    Event ||--o{ EventUpdate : "has"
    Event ||--o{ EventTheme : "uses"
    Event {
        uuid id PK
        string title
        string slug UK
        string description
        string location_name
        string location_address
        string location_url
        datetime event_date
        time event_start_time
        time event_end_time
        string timezone
        datetime rsvp_deadline
        boolean is_public
        string access_code
        uuid created_by FK
        uuid theme_id FK
        json custom_theme_settings
        json additional_info
        datetime created_at
        datetime updated_at
        boolean is_active
        boolean rsvp_enabled
        boolean gift_registry_enabled
        boolean updates_enabled
        integer max_guests_per_invitation
        string contact_email
        string contact_phone
    }

    Guest ||--o{ RSVP : "submits"
    Guest {
        uuid id PK
        uuid event_id FK
        string name
        string email
        string phone
        string invitation_code UK
        datetime invited_at
        boolean email_sent
        datetime email_sent_at
        integer reminder_count
        datetime last_reminder_sent
        string relationship
        string notes
        json address
        json custom_fields
        datetime created_at
        datetime updated_at
    }

    RSVP {
        uuid id PK
        uuid guest_id FK
        uuid event_id FK
        boolean attending
        integer number_of_adults
        integer number_of_children
        string dietary_restrictions
        string message
        string additional_guests_names
        datetime responded_at
        string ip_address
        string user_agent
        json custom_responses
        datetime created_at
        datetime updated_at
    }

    GiftItem ||--o{ GiftReservation : "has"
    GiftItem {
        uuid id PK
        uuid event_id FK
        string name
        string description
        string image_url
        decimal price
        string currency
        string purchase_url
        integer priority
        boolean is_group_gift
        decimal amount_contributed
        integer quantity_requested
        integer quantity_remaining
        boolean is_custom_amount
        decimal min_custom_amount
        boolean is_visible
        json category_tags
        json additional_details
        datetime created_at
        datetime updated_at
    }

    GiftReservation {
        uuid id PK
        uuid gift_item_id FK
        uuid guest_id FK "nullable"
        string reserver_name
        string reserver_email
        string reserver_phone
        integer quantity
        decimal amount
        boolean is_anonymous
        datetime reserved_at
        string reservation_code
        string message
        boolean is_purchased
        datetime purchased_at
        datetime created_at
        datetime updated_at
    }

    EventMedia {
        uuid id PK
        uuid event_id FK
        string media_type
        string title
        string description
        string file_path
        string url
        string thumbnail_url
        integer display_order
        boolean is_featured
        boolean is_public
        string alt_text
        string credit
        datetime upload_date
        json metadata
        datetime created_at
        datetime updated_at
    }

    EventTheme {
        uuid id PK
        string name
        string description
        string preview_image_url
        json color_palette
        json fonts
        json animations
        json layout_options
        json component_styles
        boolean is_active
        datetime created_at
        datetime updated_at
    }

    EventUpdate {
        uuid id PK
        uuid event_id FK
        string title
        string content
        boolean is_important
        boolean is_pinned
        boolean send_notification
        boolean notification_sent
        datetime notification_sent_at
        datetime publish_date
        datetime created_at
        datetime updated_at
    }

    EmailTemplate {
        uuid id PK
        string name
        string subject
        string html_content
        string text_content
        string description
        string template_type
        json variables
        boolean is_active
        datetime created_at
        datetime updated_at
    }

    Setting {
        string key PK
        string value
        string description
        string category
        datetime created_at
        datetime updated_at
    }

    NotificationLog {
        uuid id PK
        string notification_type
        uuid event_id FK
        uuid guest_id FK "nullable"
        string recipient
        string subject
        string content_preview
        boolean is_sent
        string error_message
        datetime sent_at
        datetime created_at
    }

    EventActivity {
        uuid id PK
        uuid event_id FK
        uuid user_id FK "nullable"
        uuid guest_id FK "nullable"
        string activity_type
        string description
        json context_data
        string ip_address
        datetime created_at
    }

    EventTheme ||--o{ Event : "applied to"
    Guest ||--o{ GiftReservation : "makes"
    Event ||--o{ RSVP : "receives"
    Event ||--o{ EventActivity : "logs"
    Event ||--o{ NotificationLog : "generates"