class CustomNavbar extends HTMLElement {
  connectedCallback() {
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        nav {
          background: white;
          padding: 1rem 2rem;
          display: flex;
          justify-content: space-between;
          align-items: center;
          box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
          position: sticky;
          top: 0;
          z-index: 100;
        }
        .logo {
          font-weight: 800;
          font-size: 1.5rem;
          background: linear-gradient(90deg, #3B82F6 0%, #8B5CF6 100%);
          -webkit-background-clip: text;
          background-clip: text;
          color: transparent;
          display: flex;
          align-items: center;
          gap: 0.5rem;
        }
        .nav-links {
          display: flex;
          gap: 1.5rem;
          list-style: none;
          margin: 0;
          padding: 0;
        }
        .nav-links a {
          color: #4B5563;
          text-decoration: none;
          font-weight: 500;
          transition: color 0.2s;
          display: flex;
          align-items: center;
          gap: 0.3rem;
        }
        .nav-links a:hover {
          color: #3B82F6;
        }
        .mobile-menu-btn {
          display: none;
          background: none;
          border: none;
          color: #4B5563;
          font-size: 1.5rem;
          cursor: pointer;
        }
        @media (max-width: 768px) {
          .mobile-menu-btn {
            display: block;
          }
          .nav-links {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: white;
            flex-direction: column;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
          }
          .nav-links.show {
            display: flex;
          }
        }
      </style>
      <nav>
        <a href="/" class="logo">
          <span>PureFront</span>
          <i data-feather="zap"></i>
        </a>
        
        <button class="mobile-menu-btn">
          <i data-feather="menu"></i>
        </button>
        
        <ul class="nav-links">
          <li><a href="/"><i data-feather="home"></i> Home</a></li>
          <li><a href="#features"><i data-feather="star"></i> Features</a></li>
          <li><a href="#about"><i data-feather="info"></i> About</a></li>
          <li><a href="#contact"><i data-feather="mail"></i> Contact</a></li>
        </ul>
      </nav>
    `;
    
    // Mobile menu toggle functionality
    const mobileBtn = this.shadowRoot.querySelector('.mobile-menu-btn');
    const navLinks = this.shadowRoot.querySelector('.nav-links');
    
    mobileBtn.addEventListener('click', () => {
      navLinks.classList.toggle('show');
      const icon = mobileBtn.querySelector('i');
      if (navLinks.classList.contains('show')) {
        icon.setAttribute('data-feather', 'x');
      } else {
        icon.setAttribute('data-feather', 'menu');
      }
      feather.replace();
    });
  }
}
customElements.define('custom-navbar', CustomNavbar);