/** Default light theme: neutral surfaces, oklch accents, system-friendly stack. */
export declare const defaultTheme: {
    /**
     * Defaults to `inherit` so the grid picks up the host site's typeface.
     * Override with `theme={{ fontFamily: "'Inter', system-ui, ..." }}` to pin a
     * specific stack instead.
     */
    fontFamily: string;
    fontSize: {
        cell: string;
        header: string;
        small: string;
    };
    fontWeight: {
        header: string;
        cell: string;
    };
    colors: {
        background: string;
        headerBg: string;
        /** Secondary label */
        headerText: string;
        rowHover: string;
        rowAlt: string;
        /** Legacy cell tokens (kept for theme merges / custom cells) */
        aiHighlight: string;
        aiPending: string;
        /** Gray alpha border */
        border: string;
        divider: string;
        /** Primary label */
        text: string;
        textSecondary: string;
        textMuted: string;
        accent: string;
        accentLight: string;
        sentimentPositive: string;
        sentimentNegative: string;
        sentimentNeutral: string;
        /** Full-row tint when any AI-analysable cell has finished insight */
        aiRowInsight: string;
        /** Full-row tint when a cell on the row is still analysing */
        aiRowPending: string;
        nlFilterBg: string;
        nlFilterBorder: string;
        nlFilterFocus: string;
        /** Component fill ~ Gray 2 */
        tagBg: string;
        tagText: string;
        /** Popovers / overlays (elevated surface) */
        popoverBg: string;
        /** Vision thumbnail fallback when load fails */
        thumbnailErrorBg: string;
        /** Hover state for removable chips etc. */
        tagHoverBg: string;
    };
    cell: {
        height: number;
        paddingX: number;
        paddingY: number;
    };
    header: {
        height: number;
    };
    border: string;
    borderRadius: string;
    /** Borders only; no elevation shadow */
    shadow: string;
};
export type LumenTheme = typeof defaultTheme;
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