aars/frontend/src/components/Layout.jsx

import { Outlet, NavLink, useNavigate } from 'react-router-dom'
import { useAuth } from '../context/AuthContext'
import { LogOut, Users, AlertTriangle, LayoutDashboard, Upload, Calendar } from 'lucide-react'

export default function Layout() {
  const { user, logout } = useAuth()
  const navigate = useNavigate()

  const handleLogout = () => {
    logout()
    navigate('/login')
  }

  return (
    <div className="min-h-screen bg-slate-50">
      {/* Header */}
      <header className="bg-white border-b border-slate-200 sticky top-0 z-50">
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <div className="flex items-center justify-between h-16">
            {/* Logo */}
            <div className="flex items-center gap-8">
              <div className="flex items-center gap-2">
                <div className="w-8 h-8 bg-primary-600 rounded-lg flex items-center justify-center">
                  <span className="text-white font-bold text-sm">A</span>
                </div>
                <span className="text-xl font-bold text-slate-900">AARS</span>
              </div>
              
              {/* Navigation */}
              <nav className="hidden md:flex items-center gap-1">
                <NavLink
                  to="/"
                  end
                  className={({ isActive }) =>
                    `flex items-center gap-2 px-4 py-2 rounded-md text-sm font-medium transition-colors ${
                      isActive
                        ? 'bg-primary-50 text-primary-700'
                        : 'text-slate-600 hover:bg-slate-100'
                    }`
                  }
                >
                  <LayoutDashboard size={18} />
                  Dashboard
                </NavLink>
                <NavLink
                  to="/attendance"
                  className={({ isActive }) =>
                    `flex items-center gap-2 px-4 py-2 rounded-md text-sm font-medium transition-colors ${
                      isActive
                        ? 'bg-primary-50 text-primary-700'
                        : 'text-slate-600 hover:bg-slate-100'
                    }`
                  }
                >
                  <Users size={18} />
                  出勤 Attendance
                </NavLink>
                <NavLink
                  to="/accident"
                  className={({ isActive }) =>
                    `flex items-center gap-2 px-4 py-2 rounded-md text-sm font-medium transition-colors ${
                      isActive
                        ? 'bg-primary-50 text-primary-700'
                        : 'text-slate-600 hover:bg-slate-100'
                    }`
                  }
                >
                  <AlertTriangle size={18} />
                  意外 Accident
                </NavLink>
                <NavLink
                  to="/roster"
                  className={({ isActive }) =>
                    `flex items-center gap-2 px-4 py-2 rounded-md text-sm font-medium transition-colors ${
                      isActive
                        ? 'bg-primary-50 text-primary-700'
                        : 'text-slate-600 hover:bg-slate-100'
                    }`
                  }
                >
                  <Calendar size={18} />
                  班次 Roster
                </NavLink>
              </nav>
            </div>

            {/* Right side */}
            <div className="flex items-center gap-4">
              <NavLink
                to="/upload"
                className={({ isActive }) =>
                  `flex items-center gap-2 px-3 py-1.5 rounded-md text-sm font-medium transition-colors ${
                    isActive
                      ? 'bg-primary-50 text-primary-700'
                      : 'text-slate-600 hover:bg-slate-100'
                  }`
                }
              >
                <Upload size={16} />
                <span className="hidden sm:inline">上傳</span>
              </NavLink>
              
              <div className="flex items-center gap-3 pl-4 border-l border-slate-200">
                <div className="text-right hidden sm:block">
                  <div className="text-sm font-medium text-slate-900">{user?.name}</div>
                  <div className="text-xs text-slate-500">{user?.role}</div>
                </div>
                <button
                  onClick={handleLogout}
                  className="p-2 text-slate-400 hover:text-slate-600 hover:bg-slate-100 rounded-md transition-colors"
                  title="Logout"
                >
                  <LogOut size={18} />
                </button>
              </div>
            </div>
          </div>
        </div>
      </header>

      {/* Main content */}
      <main className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
        <Outlet />
      </main>
    </div>
  )
}