class CustomHeader extends HTMLElement {
  connectedCallback() {
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: block;
        }
        
        * {
          margin: 0;
          padding: 0;
          box-sizing: border-box;
        }
        
        header {
          background-color: white;
          box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
          position: sticky;
          top: 0;
          z-index: 50;
          transition: all 0.3s ease;
        }
        
        .container {
          max-width: 1280px;
          margin: 0 auto;
          padding: 0 1rem;
        }
        
        nav {
          display: flex;
          justify-content: space-between;
          align-items: center;
          padding: 1rem 0;
        }
        
        .logo {
          display: flex;
          align-items: center;
          gap: 0.75rem;
          font-weight: 700;
          font-size: 1.5rem;
          color: #0f172a;
          text-decoration: none;
        }
        
        .logo-icon {
          color: #2563eb;
        }
        
        .nav-links {
          display: flex;
          gap: 2rem;
        }
        
        .nav-link {
          font-weight: 500;
          color: #64748b;
          text-decoration: none;
          transition: color 0.2s;
        }
        
        .nav-link:hover {
          color: #2563eb;
        }
        
        .auth-buttons {
          display: flex;
          gap: 1rem;
          align-items: center;
        }
        
        .btn-outline {
          color: #2563eb;
          border: 1px solid #2563eb;
          padding: 0.5rem 1rem;
          border-radius: 0.5rem;
          font-weight: 500;
          transition: all 0.2s;
          text-decoration: none;
        }
        
        .btn-outline:hover {
          background-color: #2563eb;
          color: white;
        }
        
        .btn-primary {
          background-color: #2563eb;
          color: white;
          padding: 0.5rem 1rem;
          border-radius: 0.5rem;
          font-weight: 500;
          transition: background-color 0.2s;
          text-decoration: none;
        }
        
        .btn-primary:hover {
          background-color: #1d4ed8;
        }
        
        .mobile-menu-button {
          display: none;
          background: none;
          border: none;
          cursor: pointer;
        }
        
        @media (max-width: 768px) {
          .nav-links, .auth-buttons {
            display: none;
          }
          
          .mobile-menu-button {
            display: block;
          }
        }
      </style>
      
      <header>
        <div class="container">
          <nav>
            <a href="/" class="logo">
              <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="logo-icon">
                <path d="M12 2L2 7l10 5 10-5-10-5z"></path>
                <path d="M2 17l10 5 10-5"></path>
                <path d="M2 12l10 5 10-5"></path>
              </svg>
              <span>GhostStack</span>
            </a>
            
            <div class="nav-links">
              <a href="#" class="nav-link">Dashboard</a>
              <a href="#" class="nav-link">Candidates</a>
              <a href="#" class="nav-link">Analytics</a>
              <a href="#" class="nav-link">Resources</a>
            </div>
            
            <div class="auth-buttons">
              <a href="#" class="btn-outline">Sign In</a>
              <a href="#" class="btn-primary">Get Started</a>
            </div>
            
            <button class="mobile-menu-button">
              <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                <line x1="3" y1="12" x2="21" y2="12"></line>
                <line x1="3" y1="6" x2="21" y2="6"></line>
                <line x1="3" y1="18" x2="21" y2="18"></line>
              </svg>
            </button>
          </nav>
        </div>
      </header>
    `;
  }
}

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