Feature/exams feed and navbar (skill-mind#170)

* feat: Add exam feed page with comprehensive exam listing and navbar

* chore: Replace exam-paper.png with exam-paper.jpg image

* refactor: Reorganize exam feed components and update import paths

src/app/exam/components/ExamCard.tsx

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+import { ExamProps } from '@/interfaces/exam.interface';
+import { Button } from '../../../components/ui/button';
+
+const InfoRow = ({
+  label,
+  value,
+}: {
+  label: string;
+  value: string | number;
+}) => (
+  <div className='flex gap-2 text-sm'>
+    <span className='text-[#6E6E6E]'>{label}:</span>
+    <span className='opacity-90'>{value}</span>
+  </div>
+);
+
+export const ExamCard = ({ exam }: { exam: ExamProps }) => {
+  return (
+    <div className='bg-[#161716] rounded-lg p-6 text-white'>
+      <h2 className='text-xl font-bold mb-4'>{exam.title}</h2>
+      <p className='mb-8 text-sm leading-relaxed'>{exam.description}</p>
+
+      <div className='h-[1px] bg-[#313130] mb-8' />
+
+      <div className='flex flex-col gap-4 mb-8'>
+        <InfoRow label='DATE' value={exam.date} />
+        <InfoRow label='DURATION' value={exam.duration} />
+        <InfoRow label='REGISTERED CANDIDATES' value={exam.registered} />
+        <InfoRow label='CERTIFICATION' value={exam.certification} />
+        <InfoRow label='FORMAT' value={exam.format} />
+      </div>
+
+      <div className='h-[1px] bg-[#313130] mb-8' />
+
+      <div className='mb-8'>
+        <h3 className='text-[#ABABAB] text-sm mb-3'>TOPICS COVERED:</h3>
+        <ul className='list-disc pl-5 text-sm space-y-2'>
+          {exam.topics.map((topic, idx) => (
+            <li key={idx} className='text-[#FCFCFC]'>
+              {topic}
+            </li>
+          ))}
+        </ul>
+      </div>
+
+      <div className='mb-8'>
+        <h3 className='text-[#ABABAB] text-sm mb-3'>WHY TAKE THIS EXAM?</h3>
+        <ul className='list-disc pl-5 text-sm space-y-2'>
+          {exam.advantages.map((advantage, idx) => (
+            <li key={idx} className='text-[#FCFCFC]'>
+              {advantage}
+            </li>
+          ))}
+        </ul>
+      </div>
+
+      <Button
+        variant='outline'
+        className='w-full bg-transparent py-3 border border-[#D0EFB1] rounded-lg hover:bg-[#D0EFB1] hover:text-[#000000] transition-colors uppercase'
+      >
+        Register
+      </Button>
+    </div>
+  );
+};

src/app/exam/components/ExamFeedNavbar.tsx

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+'use client';
+import Logo from '@/public/skillnet-white logo.png';
+import Avatar from '@/public/img/profile-avatar.png';
+import Image from 'next/image';
+import Link from 'next/link';
+import { Bell, Search, MoreVertical, X, Menu } from 'lucide-react';
+import { usePathname } from 'next/navigation';
+import { Fragment, useEffect, useRef, useState } from 'react';
+import { ExamNavLinkProps } from '@/interfaces/exam.interface';
+import { navLinks } from './mockData';
+
+const ExamFeedNavbar = () => {
+  const pathname = usePathname();
+  const [showSearch, setShowSearch] = useState(false);
+  const [isMenuOpen, setIsMenuOpen] = useState(false);
+  const menuRef = useRef<HTMLDivElement>(null);
+
+  const toggleMenu = () => {
+    setIsMenuOpen(!isMenuOpen);
+
+    if (showSearch) setShowSearch(false);
+  };
+
+  useEffect(() => {
+    const handleClickOutside = (event: MouseEvent) => {
+      if (menuRef.current && !menuRef.current.contains(event.target as Node)) {
+        setIsMenuOpen(false);
+      }
+    };
+
+    document.addEventListener('mousedown', handleClickOutside);
+    return () => document.removeEventListener('mousedown', handleClickOutside);
+  }, []);
+
+  return (
+    <>
+      <nav className='w-full flex justify-between items-center px-4 sm:px-8 lg:px-16 py-[22px] bg-[#101110] text-sm leading-6 text-[#FCFCFC] fixed top-0 left-0 z-50'>
+        {/* Logo */}
+        <Link href='/' className='flex items-center cursor-pointer'>
+          <Image
+            className='w-[50px] h-[30px] mobile:w-[80px] mobile:h-[40px]'
+            src={Logo}
+            alt='Logo'
+          />
+        </Link>
+
+        <div className='hidden md:flex flex-1 items-center w-full justify-between'>
+          {/* Navigation Links */}
+          <ul className='flex justify-center items-center gap-4 mx-auto'>
+            {navLinks.map((link: ExamNavLinkProps, index) => {
+              const isActive = pathname === link.href;
+              return (
+                <Fragment key={link.href}>
+                  <Link href={link.href}>
+                    <span
+                      className={`relative cursor-pointer pb-1 group ${
+                        isActive ? 'text-white' : 'text-[#ABABAB]'
+                      }`}
+                    >
+                      {link.label}
+                    </span>
+                  </Link>
+                  {index < navLinks.length - 1 && (
+                    <li className='bg-[#1D1D1C] w-[3px] h-4 rounded-lg' />
+                  )}
+                </Fragment>
+              );
+            })}
+          </ul>
+
+          <div className='flex items-center gap-2 lgTablet:mx-auto'>
+            <button className='p-2 hover:bg-[#313130] rounded-full transition-colors'>
+              <Bell size={20} />
+            </button>
+
+            {/* Search Bar - Show full bar on large screens, icon on smaller */}
+            <div className='relative'>
+              <div className='hidden lgTablet:block'>
+                <Search
+                  className='absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400'
+                  size={16}
+                />
+                <input
+                  type='text'
+                  placeholder='Search...'
+                  className='pl-9 pr-3 py-1.5 w-[280px] rounded-lg bg-transparent border border-[#696969] focus:outline-none focus:ring-1 focus:ring-[#313130]'
+                />
+              </div>
+              <button
+                className='lgTablet:hidden p-2 hover:bg-[#313130] rounded-full transition-colors'
+                onClick={() => setShowSearch(!showSearch)}
+              >
+                <Search size={20} />
+              </button>
+            </div>
+          </div>
+        </div>
+
+        <div className='flex items-center gap-2'>
+          {/* User Profile */}
+
+          <div className='flex items-center'>
+            <div className='flex items-center gap-1 mobile:gap-2 bg-[#161716] py-1 mobile:py-2 px-3 rounded-lg'>
+              <Image
+                className='w-8 h-8 rounded-full'
+                src={Avatar}
+                alt='User Avatar'
+                width={32}
+                height={32}
+              />
+              <span className='hidden mobile:block text-white'>
+                osatuyipikin.brawos.eth
+              </span>
+              <button className='p-1 hover:bg-[#313130] rounded-full transition-colors'>
+                <MoreVertical size={16} />
+              </button>
+            </div>
+          </div>
+
+          <button
+            onClick={toggleMenu}
+            className='md:hidden flex p-2 rounded-lg hover:bg-[#313130] transition-colors'
+            aria-label='Toggle menu'
+          >
+            {isMenuOpen ? <X size={24} /> : <Menu size={24} />}
+          </button>
+        </div>
+
+        {isMenuOpen && (
+          <div
+            ref={menuRef}
+            className='absolute top-full right-4 mt-1 w-64 z-50 rounded-lg bg-[#101110] border border-[#313130] shadow-lg md:hidden'
+          >
+            <div className='px-6 py-4 border-b border-[#313130]'>
+              <h3 className='text-sm font-semibold text-white'>SELECT PAGE</h3>
+            </div>
+            <div className='py-2'>
+              {navLinks.map((link) => {
+                const isActive = pathname === link.href;
+                return (
+                  <Link
+                    key={link.href}
+                    href={link.href}
+                    className={`flex items-center px-6 py-3 hover:bg-[#313130] transition-colors text-sm ${
+                      isActive ? 'text-white' : 'text-[#ABABAB]'
+                    }`}
+                    onClick={() => setIsMenuOpen(false)}
+                  >
+                    {link.label}
+                  </Link>
+                );
+              })}
+            </div>
+          </div>
+        )}
+      </nav>
+
+      {/* Floating Search Bar */}
+      {showSearch && (
+        <div className='fixed top-[80px] left-0 w-full px-4 sm:px-8 lg:px-16 z-50 lgTablet:hidden'>
+          <div className='relative w-full bg-[#101110] rounded-lg shadow-lg p-4'>
+            <Search
+              className='absolute left-7 top-1/2 transform -translate-y-1/2 text-gray-400'
+              size={16}
+            />
+            <input
+              type='text'
+              placeholder='Search...'
+              className='pl-9 pr-3 py-1.5 w-full rounded-lg bg-transparent border border-[#696969] focus:outline-none focus:ring-1 focus:ring-[#313130]'
+              autoFocus
+            />
+          </div>
+        </div>
+      )}
+    </>
+  );
+};
+
+export default ExamFeedNavbar;

src/app/exam/components/ExamFeedPage.tsx

@@ -0,0 +1,69 @@
+'use client';
+
+import Image from 'next/image';
+import examImage from '@/public/img/exam-paper.jpg';
+import { examCategories, examMockData } from './mockData';
+import { Button } from '../../../components/ui/button';
+import { ArrowLeft, X } from 'lucide-react';
+import { ExamCard } from './ExamCard';
+
+const ExamFeedPage = () => {
+  return (
+    <main className='min-h-screen bg-[#101110] pt-24 px-4 sm:px-6 lg:px-[100px]'>
+      {/* Hero Section */}
+      <div className='w-full h-[220px] relative rounded-lg overflow-hidden'>
+        <Image
+          src={examImage}
+          alt='Examinations background'
+          fill
+          className='object-cover'
+          priority
+        />
+        <div className='absolute inset-0' />
+        <div className='relative h-full flex items-end px-2 sm:px-4 lg:px-16 pb-8'>
+          <h1 className='text-3xl sm:text-4xl font-semibold text-white'>
+            Ongoing examinations
+          </h1>
+        </div>
+      </div>
+
+      <div className='my-14 flex justify-between items-center text-white'>
+        <Button
+          variant='ghost'
+          size='sm'
+          className='gap-2 hover:bg-transparent hover:text-white hover:brightness-125'
+        >
+          <ArrowLeft className='w-4 h-4' />
+          Back
+        </Button>
+
+        <div className='flex space-x-3 items-center cursor-pointer'>
+          <div className='font-extralight text-sm'>ChatBox</div>
+          <X className='w-4 h-4 font-semibold' />
+        </div>
+      </div>
+
+      {/* Categories Section */}
+      <div className='flex space-x-4 overflow-x-auto pb-4 scrollbar-hide'>
+        {examCategories.map((category) => (
+          <button
+            key={category}
+            className='flex-shrink-0 flex flex-col items-start justify-center border border-[#222220] px-6 py-2 bg-[#101110] text-[#FCFCFC] rounded-lg whitespace-nowrap hover:bg-[#313130] transition-colors'
+          >
+            {category}
+            <span className='text-xs text-[#898783]'>6 ongoing exams</span>
+          </button>
+        ))}
+      </div>
+
+      {/* Exams Section */}
+      <div className=' py-8 grid grid-cols-1 md:grid-cols-2 gap-6'>
+        {examMockData.map((exam, index) => (
+          <ExamCard key={index} exam={exam} />
+        ))}
+      </div>
+    </main>
+  );
+};
+
+export default ExamFeedPage;

src/app/exam/components/mockData.ts

@@ -0,0 +1,67 @@
+import { ExamNavLinkProps, ExamProps } from '@/interfaces/exam.interface';
+
+export const examMockData: ExamProps[] = [
+  {
+    title: 'WEB3 FUNDAMENTALS CERTIFICATION EXAM',
+    description:
+      "The Web3 Test Exam is a blockchain-powered assessment designed to evaluate a candidate's understanding of decentralized technologies, smart contracts, and blockchain security. This exam is hosted on StarkNet, ensuring that all results are securely stored on-chain for authenticity and tamper-proof verification.",
+    date: '26th Feb, 2025',
+    duration: '2h',
+    registered: 110,
+    certification: 'Yes on completion',
+    format: 'Multiple choice',
+    topics: [
+      'Blockchain Basics (consensus mechanisms, Layer 1 vs. Layer 2, decentralization)',
+      'Smart Contracts (solidity fundamentals, contract security, gas optimization)',
+      'DeFi & NFTs (decentralized finance protocols, NFT standards, use cases)',
+    ],
+    advantages: [
+      'Enhance Your Web3 Credentials With A Blockchain-Verified Certificate',
+      'Prove Your Skills To Potential Employers And Blockchain Projects',
+      'Gain Credibility In The Decentralized Space With Verifiable Results',
+    ],
+  },
+  {
+    title: 'WEB3 FUNDAMENTALS CERTIFICATION EXAM',
+    description:
+      "The Web3 Test Exam is a blockchain-powered assessment designed to evaluate a candidate's understanding of decentralized technologies, smart contracts, and blockchain security. This exam is hosted on StarkNet, ensuring that all results are securely stored on-chain for authenticity and tamper-proof verification.",
+    date: '26th Feb, 2025',
+    duration: '2h',
+    registered: 110,
+    certification: 'Yes on completion',
+    format: 'Multiple choice',
+    topics: [
+      'Blockchain Basics (consensus mechanisms, Layer 1 vs. Layer 2, decentralization)',
+      'Smart Contracts (solidity fundamentals, contract security, gas optimization)',
+      'DeFi & NFTs (decentralized finance protocols, NFT standards, use cases)',
+    ],
+    advantages: [
+      'Enhance Your Web3 Credentials With A Blockchain-Verified Certificate',
+      'Prove Your Skills To Potential Employers And Blockchain Projects',
+      'Gain Credibility In The Decentralized Space With Verifiable Results',
+    ],
+  },
+];
+
+export const examCategories = [
+  'JavaScript',
+  'Data Science',
+  'AI Development',
+  'Frontend',
+  'Cairo',
+  'Solidity',
+  'NextJS',
+  'Blockchain',
+  'Web3',
+  'StarkNet',
+  'Ethereum',
+  'Polygon',
+  'Arbitrum',
+  'Optimism',
+];
+
+export const navLinks: ExamNavLinkProps[] = [
+  { href: '/exam/feed', label: 'Exams' },
+  { href: '/exam/registered', label: 'Registered' },
+  { href: '/exam/results', label: 'Results' },
+];