import DefaultTheme from "vitepress/theme";
import type { Theme } from "vitepress";
// @ts-expect-error vitepress 会处理 css 导入
import "./custom.css";

/** 无本地偏好时默认暗色（与主应用一致），仍可手动切换亮/暗。 */
const initTheme = `try { const k='vitepress-theme-appearance'; if(!localStorage.getItem(k)) localStorage.setItem(k,'dark'); } catch {}`;

export default {
    extends: DefaultTheme,
    enhanceApp() {
        if (typeof document !== "undefined") {
            const s = document.createElement("script");
            s.textContent = initTheme;
            document.head.prepend(s);
        }
    },
} satisfies Theme;