import Link from "next/link"
import { BookOpen, Search, Bell, Settings } from "lucide-react"
import { Button } from "@/components/ui/button"
import { Input } from "@/components/ui/input"
import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"

export function SiteHeader() {
  return (
    <header className="sticky top-0 z-50 w-full border-b border-border/40 bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60">
      <div className="container mx-auto flex h-16 items-center px-4">
        <div className="mr-8 flex items-center gap-2">
          <div className="flex h-8 w-8 items-center justify-center rounded bg-primary text-primary-foreground">
            <BookOpen className="h-5 w-5" />
          </div>
          <span className="text-xl font-serif font-bold tracking-tight">华夏谱 (HuaXiaPu)</span>
        </div>

        <nav className="hidden md:flex items-center gap-6 text-sm font-medium text-muted-foreground">
          <Link
            href="/"
            className="transition-colors hover:text-foreground data-[active=true]:text-foreground data-[active=true]:font-semibold"
          >
            总览 (Overview)
          </Link>
          <Link href="/tree" className="transition-colors hover:text-foreground">
            族谱 (Tree)
          </Link>
          <Link href="/members" className="transition-colors hover:text-foreground">
            成员 (Members)
          </Link>
          <Link href="/timeline" className="transition-colors hover:text-foreground">
            大事记 (Timeline)
          </Link>
        </nav>

        <div className="ml-auto flex items-center gap-4">
          <div className="relative hidden sm:block">
            <Search className="absolute left-2.5 top-2.5 h-4 w-4 text-muted-foreground" />
            <Input
              type="search"
              placeholder="搜索成员..."
              className="h-9 w-64 rounded-full bg-muted pl-9 text-sm focus-visible:ring-primary"
            />
          </div>

          <Button variant="ghost" size="icon" className="text-muted-foreground">
            <Bell className="h-5 w-5" />
            <span className="sr-only">Notifications</span>
          </Button>

          <Link href="/settings">
            <Button variant="ghost" size="icon" className="text-muted-foreground">
              <Settings className="h-5 w-5" />
              <span className="sr-only">Settings</span>
            </Button>
          </Link>

          <Avatar className="h-8 w-8 border border-border">
            <AvatarImage src="/placeholder-user.jpg" alt="User" />
            <AvatarFallback>李</AvatarFallback>
          </Avatar>
        </div>
      </div>
    </header>
  )
}