/**
 * Shared motion baseline for foundation components shown in showcase.
 * Keep values centralized to make interaction rhythm consistent.
 */
export declare const MOTION_DURATION: {
    readonly fast: 0.15;
    readonly base: 0.2;
    readonly slow: 0.3;
};
export declare const MOTION_EASE: {
    readonly standard: readonly [0.16, 1, 0.3, 1];
    readonly emphasized: readonly [0.2, 0.8, 0.2, 1];
    readonly out: readonly [0, 0, 0.2, 1];
};
export declare const MOTION_SPRING: {
    readonly snappy: {
        readonly type: "spring";
        readonly stiffness: 520;
        readonly damping: 34;
        readonly mass: 0.7;
    };
};
/** Overlay fade (dialog masks, backdrops) */
export declare const MOTION_FADE: {
    readonly initial: {
        readonly opacity: 0;
    };
    readonly animate: {
        readonly opacity: 1;
    };
    readonly exit: {
        readonly opacity: 0;
    };
    readonly transition: {
        readonly duration: 0.15;
    };
};
/** Content slide-up (dialogs, alert-dialogs) */
export declare const MOTION_SLIDE_UP: {
    readonly initial: {
        readonly opacity: 0;
        readonly y: 8;
    };
    readonly animate: {
        readonly opacity: 1;
        readonly y: 0;
    };
    readonly exit: {
        readonly opacity: 0;
        readonly y: 8;
    };
    readonly transition: {
        readonly duration: 0.2;
        readonly ease: readonly [0.16, 1, 0.3, 1];
    };
};
/** Scale-in (tooltips, popovers, dropdowns, context menus, hover cards) */
export declare const MOTION_SCALE_IN: {
    readonly initial: {
        readonly opacity: 0;
        readonly scale: 0.96;
    };
    readonly animate: {
        readonly opacity: 1;
        readonly scale: 1;
    };
    readonly exit: {
        readonly opacity: 0;
        readonly scale: 0.96;
    };
    readonly transition: {
        readonly duration: 0.15;
        readonly ease: readonly [0.16, 1, 0.3, 1];
    };
};
/** Expand (collapsible sections, accordion-like reveals) */
export declare const MOTION_EXPAND: {
    readonly initial: {
        readonly opacity: 0;
        readonly height: 0;
    };
    readonly animate: {
        readonly opacity: 1;
        readonly height: "auto";
    };
    readonly exit: {
        readonly opacity: 0;
        readonly height: 0;
    };
    readonly transition: {
        readonly duration: 0.2;
        readonly ease: readonly [0.2, 0.8, 0.2, 1];
    };
};
/** Check if user prefers reduced motion (SSR-safe) */
export declare function getReducedMotion(): boolean;
/**
 * Read the --motion-multiplier CSS variable from the DOM (SSR-safe).
 * Presets override this value to make motion faster or slower.
 */
export declare function getMotionMultiplier(): number;