/**
 * Midpoint **container** width (not viewport) for the dual-column settings
 * layout. Enter/exit use hysteresis so expanding the sidebar does not
 * immediately drop the shell back under the threshold.
 */
export declare const SETTINGS_DESKTOP_MIN_WIDTH_PX = 720;
export declare const SETTINGS_ENTER_WIDE_WIDTH_PX = 736;
export declare const SETTINGS_EXIT_WIDE_WIDTH_PX = 704;
export declare const SETTINGS_LAYOUT_TRANSITION = "duration-200 ease-out motion-reduce:transition-none";
export type SettingsLayoutMode = "compact" | "unknown" | "wide";
export declare function nextSettingsLayoutMode(current: SettingsLayoutMode, width: number): Exclude<SettingsLayoutMode, "unknown">;