'use client'

import { useState } from 'react'
import { useAuth } from '@/lib/auth'

export default function LoginPage() {
  const [email, setEmail] = useState('')
  const [password, setPassword] = useState('')
  const [error, setError] = useState('')
  const [loading, setLoading] = useState(false)
  const { login } = useAuth()

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault()
    setError('')
    setLoading(true)
    try {
      await login(email, password)
    } catch (err: any) {
      setError(err.message)
    } finally {
      setLoading(false)
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 px-4" style={{ background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)' }}>
      <div className="w-full max-w-md">
        {/* Logo / Brand */}
        <div className="text-center mb-8">
          <div className="inline-flex items-center justify-center w-20 h-20 bg-white rounded-xl mb-4 shadow-lg">
            <svg className="w-12 h-12 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24" strokeWidth={2}>
              <path strokeLinecap="round" strokeLinejoin="round" d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" />
            </svg>
          </div>
          <h1 className="text-3xl font-bold text-white mb-2">Sistema de Inventario</h1>
          <p className="text-sm text-white/90">Inicie sesión para continuar</p>
        </div>

        {/* Card */}
        <div className="bg-white rounded-lg shadow-xl border-0 p-6 sm:p-8">
          {error && (
            <div className="bg-red-50 border border-red-200 text-red-800 font-semibold px-4 py-3 rounded-lg text-sm mb-5">
              {error}
            </div>
          )}

          <form onSubmit={handleSubmit} className="space-y-4">
            <div>
              <label htmlFor="email" className="block text-sm font-semibold text-gray-700 mb-2">
                Correo electrónico
              </label>
              <input
                id="email"
                type="email"
                autoComplete="email"
                required
                placeholder="usuario@empresa.com"
                className="w-full px-3 py-2 border border-gray-300 rounded-lg text-gray-900 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500"
                value={email}
                onChange={(e) => setEmail(e.target.value)}
              />
            </div>

            <div>
              <label htmlFor="password" className="block text-sm font-semibold text-gray-700 mb-2">
                Contraseña
              </label>
              <input
                id="password"
                type="password"
                autoComplete="current-password"
                required
                placeholder="••••••••"
                className="w-full px-3 py-2 border border-gray-300 rounded-lg text-gray-900 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500"
                value={password}
                onChange={(e) => setPassword(e.target.value)}
              />
            </div>

            <button
              type="submit"
              disabled={loading}
              className="w-full py-2.5 px-4 bg-blue-600 text-white text-sm font-semibold rounded-lg hover:bg-blue-700 transition shadow-sm hover:shadow disabled:opacity-50 mt-4"
            >
              {loading ? (
                <span className="flex items-center justify-center gap-2">
                  <span className="animate-spin inline-block w-4 h-4 border-2 border-white border-t-transparent rounded-full" />
                  Iniciando sesión...
                </span>
              ) : 'Iniciar sesión'}
            </button>
          </form>
        </div>

        <p className="text-center text-xs text-white/80 mt-6">
          © {new Date().getFullYear()} Sistema de Inventario · Honduras
        </p>
      </div>
    </div>
  )
}