frontend/components/Navigation.tsx

'use client';

import Link from 'next/link';
import { usePathname } from 'next/navigation';
import { Button } from '@/components/ui/button';
import { Sparkles, Upload, FileText, BarChart3 } from 'lucide-react';
import { cn } from '@/lib/utils';

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

  const navItems = [
    { href: '/', label: 'Home', icon: Sparkles },
    { href: '/upload', label: 'Upload', icon: Upload },
  ];

  return (
    <nav className="sticky top-0 z-50 w-full border-b bg-white/80 backdrop-blur-lg">
      <div className="container mx-auto px-4 py-4">
        <div className="flex items-center justify-between">
          {/* Logo */}
          <Link href="/" className="flex items-center space-x-2">
            <div className="flex h-10 w-10 items-center justify-center rounded-xl bg-gradient-to-br from-blue-600 to-purple-600">
              <Sparkles className="h-6 w-6 text-white" />
            </div>
            <span className="text-2xl font-bold bg-gradient-to-r from-blue-600 to-purple-600 bg-clip-text text-transparent">
              SPARKNET
            </span>
          </Link>

          {/* Navigation Links */}
          <div className="hidden md:flex items-center space-x-6">
            {navItems.map((item) => {
              const Icon = item.icon;
              const isActive = pathname === item.href;
              return (
                <Link
                  key={item.href}
                  href={item.href}
                  className={cn(
                    'flex items-center space-x-2 px-4 py-2 rounded-lg transition-colors',
                    isActive
                      ? 'bg-blue-50 text-blue-600 font-medium'
                      : 'text-gray-600 hover:text-blue-600 hover:bg-gray-50'
                  )}
                >
                  <Icon className="h-4 w-4" />
                  <span>{item.label}</span>
                </Link>
              );
            })}
          </div>

          {/* CTA Button */}
          <Button
            asChild
            className="bg-gradient-to-r from-blue-600 to-purple-600 hover:from-blue-700 hover:to-purple-700"
          >
            <Link href="/upload">
              <Upload className="mr-2 h-4 w-4" />
              Analyze Patent
            </Link>
          </Button>
        </div>
      </div>
    </nav>
  );
}