/**
 * True when the product shell should use dark semantic surfaces: `<html class="dark">`
 * or next-themes says dark. Used so the grooved main column and line field track
 * **Settings → General → Appearance** together.
 *
 * Returns `false` during SSR and the hydration pass so decorative shell layers keep
 * a stable light-first DOM (see `LineFieldPatternLayers`).
 */
declare function useAppShellDarkAppearance(): boolean;

export { useAppShellDarkAppearance };
