nezha_dash/components/ThemeColorManager.tsx

"use client"

import { useTheme } from "next-themes"
import { useEffect } from "react"

export function ThemeColorManager() {
  const { theme, systemTheme } = useTheme()

  useEffect(() => {
    const updateThemeColor = () => {
      const currentTheme = theme === "system" ? systemTheme : theme
      const meta = document.querySelector('meta[name="theme-color"]')

      if (!meta) {
        const newMeta = document.createElement("meta")
        newMeta.name = "theme-color"
        document.head.appendChild(newMeta)
      }

      const themeColor =
        currentTheme === "dark"
          ? "hsl(30 15% 8%)" // 深色模式背景色
          : "hsl(0 0% 98%)" // 浅色模式背景色

      document.querySelector('meta[name="theme-color"]')?.setAttribute("content", themeColor)
    }

    // Update on mount and theme change
    updateThemeColor()

    // Listen for system theme changes
    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)")
    mediaQuery.addEventListener("change", updateThemeColor)

    return () => mediaQuery.removeEventListener("change", updateThemeColor)
  }, [theme, systemTheme])

  return null
}