hapi/website/src/components/ModeToggle.tsx

import { Moon, Sun } from "lucide-react"
import { Button } from "@/components/ui/button"
import { useTheme } from "@/contexts/ThemeContext"

export function ModeToggle() {
  const { theme, setTheme } = useTheme()

  const toggleTheme = () => {
    // 如果当前是 system，则根据系统偏好决定切换到哪个模式
    if (theme === "system") {
      const systemIsDark = window.matchMedia("(prefers-color-scheme: dark)").matches
      setTheme(systemIsDark ? "light" : "dark")
    } else {
      setTheme(theme === "dark" ? "light" : "dark")
    }
  }

  return (
    <Button 
      variant="outline" 
      size="icon" 
      onClick={toggleTheme}
      className="border-2 border-border shadow-hard hover:translate-y-0.5 hover:shadow-none transition-all"
      title="Toggle theme"
    >
      <Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
      <Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
      <span className="sr-only">Toggle theme</span>
    </Button>
  )
}