/**
 * Chart configuration types and theme utilities.
 *
 * Charts read colors from CSS variables (--chart-1 through --chart-8) defined
 * in the shared Tailwind theme, so they respect light/dark mode automatically.
 */
export type ChartColorToken = 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8;
/** Named chart color aliases for semantic use. */
export declare const chartColors: {
    readonly primary: 1;
    readonly success: 2;
    readonly accent: 3;
    readonly violet: 4;
    readonly rose: 5;
    readonly cyan: 6;
    readonly amber: 7;
    readonly green: 8;
};
export type ChartDataEntry = {
    label: string;
    value: number;
    color?: ChartColorToken;
};
export type ChartSeriesConfig = {
    dataKey: string;
    label: string;
    color?: ChartColorToken;
};
/** Chart size presets — matches the compact/default/feature Card variants. */
export type ChartSize = "sm" | "md" | "lg" | "responsive";
export declare const chartHeights: Record<Exclude<ChartSize, "responsive">, number>;
/**
 * Resolve a chart color token to the CSS variable string that Recharts accepts.
 * Recharts supports raw CSS color values, so we resolve via `hsl(var(--chart-N))`.
 */
export declare function chartColor(token: ChartColorToken): string;
/** Default palette — cycles through 8 chart tokens. */
export declare function chartColorByIndex(index: number): string;
/** Format a number for display inside charts (compact for large values). */
export declare function formatChartValue(value: number): string;
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