import { TemplateResult } from 'lit';
import { BahtChartBase, ChartDatePoint } from './charts.js';
/**
 * Calendar heat for one month or N weeks: one cell per day, colored on the
 * sequential ramp, with a weekday header, a per-cell tooltip and a
 * "less / more" scale legend.
 *
 *   const el = document.createElement('baht-heatmap');
 *   el.values = [{ date: '2026-09-01', value: 420 }];
 *   el.from = '2026-09-01'; el.to = '2026-09-30';
 *
 * `show-values` swaps the compact GitHub-style SVG (weeks as columns) for a
 * month grid rendered as HTML (weeks as rows): seven weekday headers, one
 * focusable button per day carrying the day number and the formatted value,
 * today's cell outlined. Being HTML, the grid fills its container while text
 * keeps its real size — nothing is scaled. Cell height follows
 * `--baht-heatmap-cell-min` (56px). The two darkest ramp steps flip to light
 * text.
 *
 *   <baht-heatmap show-values format="currency" zero-label="none" .values=${daily}></baht-heatmap>
 */
export declare class BahtHeatmap extends BahtChartBase {
    /** `{ date: 'YYYY-MM-DD', value }[]`; days with no entry render as empty. */
    values: ChartDatePoint[];
    /** First day (inclusive), `YYYY-MM-DD`. Defaults to the earliest value. */
    from: string;
    /** Last day (inclusive), `YYYY-MM-DD`. Defaults to the latest value. */
    to: string;
    /** Caption on the low end of the scale legend. */
    lessLabel: string;
    /** Caption on the high end of the scale legend. */
    moreLabel: string;
    /** Text shown in a zero/empty cell in `show-values` mode. */
    zeroLabel: string;
    /** Roomier month-grid layout with the day number and value printed in each cell. */
    showValues: boolean;
    /** Accessible summary; falls back to a generated sentence. */
    label: string;
    private get range();
    protected render(): TemplateResult;
    /** Compact GitHub-style layout: weeks as columns, weekdays as rows. */
    private renderCompact;
    /**
     * `show-values` layout: an HTML month grid — weeks as rows, weekdays as
     * columns, the day number and value printed in each cell. Buttons give
     * every day focus and a role for free; the tooltip rides on focus/hover.
     */
    private renderCalendar;
}