/**
 * Theme CSS Compiler -- `ThemeDef` to `html[data-theme]` selector blocks + transitions.
 *
 * Emits per-variant CSS blocks overriding `--czap-*` custom properties,
 * and optional transition declarations for animated theme switching.
 *
 * @module
 */
import type { Theme } from '@czap/core';
/**
 * Output of {@link ThemeCSSCompiler.compile}.
 *
 * `selectors` is the concatenated `html[data-theme="variant"]` rule block,
 * one per theme variant that has at least one token override. `transitions`
 * is the optional `:root { transition-*: … }` block emitted when the theme
 * carries metadata indicating animated switching is desired.
 */
export interface ThemeCSSResult {
    /** Per-variant `html[data-theme]` selector blocks. */
    readonly selectors: string;
    /** Optional root transition declarations for animated theme swaps. */
    readonly transitions: string;
}
/**
 * Compile a {@link Theme.Shape} into per-variant selector blocks and optional
 * root transitions.
 */
declare function compile(theme: Theme.Shape): ThemeCSSResult;
/**
 * Theme CSS compiler namespace.
 *
 * Serializes a {@link Theme.Shape} into `html[data-theme="…"]` selector
 * overrides of `--czap-*` custom properties and, when theme metadata
 * requests it, a `:root` transition block that animates all theme
 * property changes.
 */
export declare const ThemeCSSCompiler: {
    /** Compile a theme definition into per-variant selector blocks. */
    readonly compile: typeof compile;
};
export {};
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