/**
 * Resolves the visual styling of a chart from the grid's active CSS theme
 * tokens, so hand-drawn canvas charts honor light / dark / custom themes
 * without hardcoding colors.
 *
 * The resolver reads computed CSS custom properties from the chart's own DOM
 * node. It must be called **once per render** (never inside an animation frame
 * or hover redraw) because `getComputedStyle` forces layout; the result is
 * cached by the renderer for the duration of a render pass.
 */
/**
 * The fully-resolved set of colors and fonts a {@link ChartRenderer} draws with.
 * Every value is a concrete, ready-to-use CSS color / font string.
 */
export interface ResolvedChartTheme {
    /** Primary text: titles, axis labels, values. */
    readonly textColor: string;
    /** Secondary / muted text: subtitles, axis ticks. */
    readonly mutedColor: string;
    /** Grid lines and axis lines. */
    readonly gridColor: string;
    /** Panel/plot background; `'transparent'` when the theme has no surface token. */
    readonly background: string;
    /** Font family for all chart text. */
    readonly fontFamily: string;
    /** Ordered series color palette. */
    readonly palette: readonly string[];
}
/**
 * Reads the active theme tokens from `el` and returns a concrete
 * {@link ResolvedChartTheme}. Missing tokens fall back to neutral defaults so
 * charts still render legibly in an unstyled or server-rendered context.
 *
 * @param el - A DOM node inside the themed grid (typically the chart canvas).
 * @returns The resolved colors, font and series palette.
 */
export declare function resolveChartTheme(el: HTMLElement): ResolvedChartTheme;
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