frontend/src/components/layout/Navigation.tsx

'use client';

import Link from 'next/link';
import { usePathname } from 'next/navigation';

const navItems = [
  { href: '/', label: 'Dashboard' },
  { href: '/analyze', label: 'Analyze' },
  { href: '/cases', label: 'Cases' },
  { href: '/simulation', label: 'Simulation' },
  { href: '/sentinel', label: 'Sentinel' },
  { href: '/prompts', label: 'Prompt Lab' },
  { href: '/config', label: 'Config' },
];

export default function Navigation() {
  const pathname = usePathname();

  return (
    <nav className="border-b border-gray-800 bg-gray-900/30">
      <div className="container mx-auto px-4">
        <div className="flex gap-1">
          {navItems.map((item) => {
            const isActive = pathname === item.href;
            return (
              <Link
                key={item.href}
                href={item.href}
                className={`px-4 py-3 text-sm font-medium transition-colors relative ${
                  isActive
                    ? 'text-blue-400'
                    : 'text-gray-400 hover:text-gray-200'
                }`}
              >
                {item.label}
                {isActive && (
                  <div className="absolute bottom-0 left-0 right-0 h-0.5 bg-blue-400" />
                )}
              </Link>
            );
          })}
        </div>
      </div>
    </nav>
  );
}