/**
 * C4 Diagram AST Types
 *
 * C4 diagrams visualize software architecture using the C4 model:
 * - Context: High-level system context
 * - Container: Container-level view
 * - Component: Component-level view
 * - Dynamic: Sequence-like interactions
 * - Deployment: Infrastructure deployment
 */
/**
 * C4 diagram types
 */
export type C4DiagramType = 'C4Context' | 'C4Container' | 'C4Component' | 'C4Dynamic' | 'C4Deployment';
/**
 * C4 element types - People
 */
export type C4PersonType = 'person' | 'external_person';
/**
 * C4 element types - Systems
 */
export type C4SystemType = 'system' | 'system_db' | 'system_queue' | 'external_system' | 'external_system_db' | 'external_system_queue';
/**
 * C4 element types - Containers
 */
export type C4ContainerType = 'container' | 'container_db' | 'container_queue' | 'external_container' | 'external_container_db' | 'external_container_queue';
/**
 * C4 element types - Components
 */
export type C4ComponentType = 'component' | 'component_db' | 'component_queue' | 'external_component' | 'external_component_db' | 'external_component_queue';
/**
 * C4 boundary types
 */
export type C4BoundaryType = 'boundary' | 'enterprise_boundary' | 'system_boundary' | 'container_boundary';
/**
 * C4 deployment node types
 */
export type C4DeploymentNodeType = 'node' | 'nodeL' | 'nodeR';
/**
 * C4 relationship types
 */
export type C4RelationType = 'rel' | 'birel' | 'rel_u' | 'rel_d' | 'rel_l' | 'rel_r' | 'rel_b';
/**
 * All C4 element types combined
 */
export type C4ElementType = C4PersonType | C4SystemType | C4ContainerType | C4ComponentType;
/**
 * Direction for layout
 */
export type C4Direction = 'TB' | 'BT' | 'LR' | 'RL';
/**
 * A person element in C4 diagrams
 */
export interface C4Person {
    type: C4PersonType;
    alias: string;
    label?: string;
    description?: string;
    sprite?: string;
    tags?: string;
    link?: string;
    /** Custom properties as key-value pairs */
    properties?: Record<string, string>;
}
/**
 * A system element in C4 diagrams
 */
export interface C4System {
    type: C4SystemType;
    alias: string;
    label?: string;
    description?: string;
    sprite?: string;
    tags?: string;
    link?: string;
    properties?: Record<string, string>;
}
/**
 * A container element in C4 diagrams
 */
export interface C4Container {
    type: C4ContainerType;
    alias: string;
    label?: string;
    technology?: string;
    description?: string;
    sprite?: string;
    tags?: string;
    link?: string;
    properties?: Record<string, string>;
}
/**
 * A component element in C4 diagrams
 */
export interface C4Component {
    type: C4ComponentType;
    alias: string;
    label?: string;
    technology?: string;
    description?: string;
    sprite?: string;
    tags?: string;
    link?: string;
    properties?: Record<string, string>;
}
/**
 * A boundary (grouping) in C4 diagrams
 */
export interface C4Boundary {
    type: C4BoundaryType;
    alias: string;
    label?: string;
    tags?: string;
    link?: string;
    properties?: Record<string, string>;
    /** Nested elements within this boundary */
    children: C4Element[];
}
/**
 * A deployment node in C4 diagrams
 */
export interface C4DeploymentNode {
    type: C4DeploymentNodeType;
    alias: string;
    label?: string;
    technology?: string;
    description?: string;
    sprite?: string;
    tags?: string;
    link?: string;
    properties?: Record<string, string>;
    /** Nested elements within this node */
    children: C4Element[];
}
/**
 * A relationship between elements
 */
export interface C4Relationship {
    type: C4RelationType;
    from: string;
    to: string;
    label?: string;
    technology?: string;
    description?: string;
    sprite?: string;
    tags?: string;
    link?: string;
    properties?: Record<string, string>;
}
/**
 * Element style update
 */
export interface C4ElementStyle {
    elementName: string;
    bgColor?: string;
    fontColor?: string;
    borderColor?: string;
    shadowing?: string;
    shape?: string;
    sprite?: string;
    technology?: string;
    legendText?: string;
    legendSprite?: string;
}
/**
 * Relationship style update
 */
export interface C4RelationshipStyle {
    from: string;
    to: string;
    textColor?: string;
    lineColor?: string;
    offsetX?: number;
    offsetY?: number;
}
/**
 * Layout configuration
 */
export interface C4LayoutConfig {
    c4ShapeInRow?: number;
    c4BoundaryInRow?: number;
}
/**
 * Union type for all C4 elements
 */
export type C4Element = C4Person | C4System | C4Container | C4Component | C4Boundary | C4DeploymentNode;
/**
 * C4 Diagram AST
 */
export interface C4AST {
    /** Discriminator for MermaidAST union */
    type: 'c4';
    /** The specific C4 diagram type */
    diagramType: C4DiagramType;
    /** Diagram title */
    title?: string;
    /** Accessibility title */
    accTitle?: string;
    /** Accessibility description */
    accDescr?: string;
    /** Layout direction */
    direction?: C4Direction;
    /** Top-level elements (people, systems, containers, components) */
    elements: C4Element[];
    /** Relationships between elements */
    relationships: C4Relationship[];
    /** Element style overrides */
    elementStyles: C4ElementStyle[];
    /** Relationship style overrides */
    relationshipStyles: C4RelationshipStyle[];
    /** Layout configuration */
    layoutConfig?: C4LayoutConfig;
}
/**
 * Creates an empty C4 AST
 */
export declare function createEmptyC4AST(diagramType?: C4DiagramType): C4AST;
/**
 * Type guards for C4 elements
 */
export declare function isC4Person(element: C4Element): element is C4Person;
export declare function isC4System(element: C4Element): element is C4System;
export declare function isC4Container(element: C4Element): element is C4Container;
export declare function isC4Component(element: C4Element): element is C4Component;
export declare function isC4Boundary(element: C4Element): element is C4Boundary;
export declare function isC4DeploymentNode(element: C4Element): element is C4DeploymentNode;
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