import { CardSize, CardVariant, SlotAlignment, CardTarget } from './exports';
/**
 * A flexible content container supporting portrait and landscape layouts with image, headline, description, badge, and optional button.
 *
 * Example:
 * ```
 * <!-- Portrait card -->
 * <r-card variant="portrait">
 *   <r-image slot="image" src="photo.jpg" alt="Card image"></r-image>
 *   <span slot="headline">Card title</span>
 *   <span slot="description">Supporting description text.</span>
 *   <r-button slot="button" variant="primary">Learn more</r-button>
 * </r-card>
 *
 * <!-- Landscape card -->
 * <r-card variant="landscape">
 *   <r-icon slot="leading" name="info" size="m"></r-icon>
 *   <span slot="headline">Landscape card</span>
 *   <span slot="description">Description text.</span>
 * </r-card>
 * ```
 *
 * @part card - The card container element.
 * @part content - The container for the headline, description, and subtext content.
 * @part body - The container for the badge and content elements.
 *
 * @slot image - Image placed at the top of a portrait card
 * @slot icon - Icon placed at the top of a portrait card
 * @slot leading - Leading visual element for landscape cards (for image or icon)
 * @slot badge - Badge element placed above the headline
 * @slot headline - Card headline text
 * @slot description - Secondary descriptive text below the headline
 * @slot subtext - Tertiary text below the description
 * @slot button - Call-to-action button (portrait cards only)
 * @slot trailing-icon - Trailing icon placed at the end of landscape cards
 * */
export declare class Card {
    host: HTMLRCardElement;
    /** Defines the layout of the component **/
    variant: CardVariant;
    /** Defines the size of the component. Only applies in portrait variant */
    size: CardSize;
    /** Defines href for the interactive card */
    href?: string;
    /**
     * Defines the target for the linked URL when `href` is provided.
     * Options: `"_blank"`, `"_self"`, `"_parent"`, `"_top"`.
     */
    target?: CardTarget;
    /** Defines the heading level for the headline. */
    headingAriaLevel: number;
    /** Truncates the headline text with an ellipsis if it exceeds the available space. */
    truncateHeadline: boolean;
    /** Truncates the description text with an ellipsis if it exceeds the available space. */
    truncateDescription: boolean;
    /** Truncates the subtext with an ellipsis if it exceeds the available space. */
    truncateSubtext: boolean;
    /** Defines the vertical alignment of the leading slot content (e.g. image or icon). */
    leadingSlotAlignment: SlotAlignment;
    /** Defines the vertical alignment of the trailing slot. */
    trailingSlotAlignment: SlotAlignment;
    private level;
    private hasButton;
    private hasHeadline;
    onLevelChange(val: number): void;
    private onButtonSlotChange;
    private onHeadlineSlotChange;
    componentWillLoad(): void;
    private get isPortrait();
    private renderHeadline;
    render(): any;
}