class CustomHeader extends HTMLElement {
  connectedCallback() {
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: block;
        }
        
        .header {
          background-color: rgba(17, 24, 39, 0.9);
          backdrop-filter: blur(10px);
          position: fixed;
          width: 100%;
          z-index: 1000;
          border-bottom: 1px solid rgba(55, 65, 81, 0.5);
        }
        
        .nav-container {
          max-width: 1200px;
          margin: 0 auto;
          padding: 0 1rem;
        }
        
        .nav-content {
          display: flex;
          justify-content: space-between;
          align-items: center;
          padding: 1rem 0;
        }
        
        .logo {
          font-family: 'Playfair Display', serif;
          font-size: 1.5rem;
          font-weight: 700;
          color: #0d9488;
          text-decoration: none;
        }
        
        .nav-links {
          display: flex;
          list-style: none;
        }
        
        .nav-links li {
          margin-left: 2rem;
        }
        
        .nav-links a {
          color: #d1d5db;
          text-decoration: none;
          font-weight: 500;
          transition: color 0.3s ease;
        }
        
        .nav-links a:hover {
          color: #0d9488;
        }
        
        .mobile-menu-btn {
          display: none;
          background: none;
          border: none;
          color: #d1d5db;
          cursor: pointer;
        }
        
        .cta-button {
          background-color: #0d9488;
          color: white;
          border: none;
          padding: 0.5rem 1.5rem;
          border-radius: 9999px;
          font-weight: 500;
          transition: background-color 0.3s ease;
        }
        
        .cta-button:hover {
          background-color: #0f766e;
        }
        
        @media (max-width: 768px) {
          .nav-links {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background-color: rgba(17, 24, 39, 0.95);
            flex-direction: column;
            padding: 1rem;
            border-top: 1px solid #374151;
          }
          
          .nav-links.active {
            display: flex;
          }
          
          .nav-links li {
            margin: 0.5rem 0;
          }
          
          .mobile-menu-btn {
            display: block;
          }
        }
      </style>
      
      <header class="header">
        <div class="nav-container">
          <div class="nav-content">
            <a href="#" class="logo">WellnessWave</a>
            
            <button class="mobile-menu-btn" id="menu-toggle">
              <i data-feather="menu" class="w-6 h-6"></i>
            </button>
            
            <ul class="nav-links" id="nav-links">
              <li><a href="#">Home</a></li>
              <li><a href="#services">Services</a></li>
              <li><a href="#">About</a></li>
              <li><a href="#">Blog</a></li>
              <li><a href="#booking">Contact</a></li>
              <li><button class="cta-button">Book Consultation</button></li>
            </ul>
          </div>
        </div>
      </header>
    `;
    
    // Mobile menu toggle
    const menuToggle = this.shadowRoot.getElementById('menu-toggle');
    const navLinks = this.shadowRoot.getElementById('nav-links');
    
    menuToggle.addEventListener('click', () => {
      navLinks.classList.toggle('active');
      const menuIcon = menuToggle.querySelector('i');
      if (navLinks.classList.contains('active')) {
        menuIcon.setAttribute('data-feather', 'x');
      } else {
        menuIcon.setAttribute('data-feather', 'menu');
      }
      feather.replace();
    });
  }
}

customElements.define('custom-header', CustomHeader);