'use client'

import { useState, useEffect } from 'react'
import { motion, AnimatePresence } from 'framer-motion'
import { Menu, X, Lock, Shield } from 'lucide-react'
import Link from 'next/link'
import { usePathname } from 'next/navigation'

export default function Header() {
  const [isScrolled, setIsScrolled] = useState(false)
  const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false)
  const pathname = usePathname()
  const isHomePage = pathname === '/'

  useEffect(() => {
    const handleScroll = () => {
      setIsScrolled(window.scrollY > 20)
    }
    window.addEventListener('scroll', handleScroll)
    return () => window.removeEventListener('scroll', handleScroll)
  }, [])

  const navItems = [
    { href: '#accueil', label: 'Accueil' },
    { href: '#services', label: 'Services' },
    { href: '#tarifs', label: 'Tarifs' },
    { href: '#faq', label: 'FAQ' },
    { href: '#contact', label: 'Contact' },
  ]

  const getNavHref = (href: string) => {
    if (isHomePage) {
      return href
    }
    return `/${href}`
  }

  return (
    <motion.header
      initial={{ y: -100 }}
      animate={{ y: 0 }}
      transition={{ duration: 0.5 }}
      className={`fixed top-0 left-0 right-0 z-50 transition-all duration-300 ${
        isScrolled
          ? 'bg-security-dark/95 backdrop-blur-md shadow-lg shadow-black/50 border-b border-security-border'
          : 'bg-transparent'
      }`}
    >
      <nav className="container mx-auto px-4 sm:px-6 lg:px-8">
        <div className="flex items-center justify-between h-20">
          {/* Logo */}
          <Link href="/" className="flex items-center space-x-3 group">
            <div className="relative">
              <div className="absolute inset-0 bg-security-accent/20 rounded-xl blur-lg group-hover:blur-xl transition-all duration-300" />
              <Shield className="relative w-10 h-10 text-security-accent group-hover:scale-110 transition-transform duration-300" />
            </div>
            <span className="text-2xl font-bold text-white group-hover:text-security-accent transition-colors">
              RUNLOCK<span className="gradient-text">.re</span>
            </span>
          </Link>

          {/* Desktop Navigation */}
          <div className="hidden md:flex items-center space-x-8">
            {navItems.map((item, index) => (
              <motion.a
                key={item.href}
                href={getNavHref(item.href)}
                initial={{ opacity: 0, y: -20 }}
                animate={{ opacity: 1, y: 0 }}
                transition={{ delay: index * 0.1 }}
                className="text-gray-300 hover:text-security-accent font-medium transition-colors duration-300 relative group"
              >
                {item.label}
                <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-security-accent group-hover:w-full transition-all duration-300" />
              </motion.a>
            ))}
            <motion.a
              href={getNavHref('#contact')}
              initial={{ opacity: 0, scale: 0.8 }}
              animate={{ opacity: 1, scale: 1 }}
              transition={{ delay: 0.5 }}
              className="px-6 py-2.5 bg-gradient-to-r from-security-accent to-green-500 text-black rounded-xl font-semibold hover:shadow-lg hover:shadow-security-accent/50 transition-all duration-300 hover:scale-105"
            >
              Demander un devis
            </motion.a>
          </div>

          {/* Mobile Menu Button */}
          <button
            onClick={() => setIsMobileMenuOpen(!isMobileMenuOpen)}
            className="md:hidden text-gray-300 hover:text-security-accent transition-colors"
            aria-label="Menu"
          >
            {isMobileMenuOpen ? <X size={28} /> : <Menu size={28} />}
          </button>
        </div>
      </nav>

      {/* Mobile Menu */}
      <AnimatePresence>
        {isMobileMenuOpen && (
          <motion.div
            initial={{ opacity: 0, height: 0 }}
            animate={{ opacity: 1, height: 'auto' }}
            exit={{ opacity: 0, height: 0 }}
            transition={{ duration: 0.3 }}
            className="md:hidden bg-security-dark/98 backdrop-blur-md border-t border-security-border shadow-lg"
          >
            <div className="container mx-auto px-4 py-6 space-y-4">
              {navItems.map((item) => (
                <a
                  key={item.href}
                  href={getNavHref(item.href)}
                  onClick={() => setIsMobileMenuOpen(false)}
                  className="block text-gray-300 hover:text-security-accent font-medium transition-colors py-2"
                >
                  {item.label}
                </a>
              ))}
              <a
                href={getNavHref('#contact')}
                onClick={() => setIsMobileMenuOpen(false)}
                className="block w-full text-center px-6 py-3 bg-gradient-to-r from-security-accent to-green-500 text-black rounded-xl font-semibold mt-4"
              >
                Demander un devis
              </a>
            </div>
          </motion.div>
        )}
      </AnimatePresence>
    </motion.header>
  )
}