class CustomHeader extends HTMLElement {
  connectedCallback() {
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: block;
        }
        
        .header {
          background: white;
          box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
          position: sticky;
          top: 0;
          z-index: 50;
        }
        
        .nav-container {
          max-width: 80rem;
          margin: 0 auto;
          padding: 0 1rem;
        }
        
        .nav-content {
          display: flex;
          justify-content: space-between;
          align-items: center;
          height: 4rem;
        }
        
        .logo {
          display: flex;
          align-items: center;
          font-weight: 700;
          font-size: 1.25rem;
          color: #1e293b;
          text-decoration: none;
        }
        
        .logo-icon {
          margin-right: 0.75rem;
          color: #4f46e5;
        }
        
        .nav-links {
          display: flex;
          align-items: center;
          space-x: 4;
        }
        
        .nav-link {
          padding: 0.5rem 1rem;
          font-size: 0.875rem;
          font-weight: 500;
          color: #64748b;
          border-radius: 0.375rem;
          transition: all 0.2s;
          text-decoration: none;
        }
        
        .nav-link:hover {
          color: #1e293b;
          background-color: #f1f5f9;
        }
        
        .nav-link.active {
          color: #4f46e5;
          background-color: #eef2ff;
        }
        
        .user-actions {
          display: flex;
          align-items: center;
          space-x: 3;
        }
        
        .action-button {
          display: flex;
          align-items: center;
          justify-content: center;
          width: 2.5rem;
          height: 2.5rem;
          border-radius: 0.5rem;
          color: #64748b;
          background-color: #f8fafc;
          transition: all 0.2s;
          cursor: pointer;
        }
        
        .action-button:hover {
          background-color: #f1f5f9;
          color: #1e293b;
        }
        
        @media (max-width: 768px) {
          .nav-links {
            display: none;
          }
        }
      </style>
      
      <header class="header">
        <div class="nav-container">
          <div class="nav-content">
            <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 2v20M17 5H9.5a3.5 3.5 0 0 0 0 7h5a3.5 3.5 0 0 1 0 7H6"></path>
              </svg>
              Fluxo de Caixa Pro
            </a>
            
            <nav class="nav-links">
              <a href="/" class="nav-link active">Dashboard</a>
              <a href="#" class="nav-link">Relatórios</a>
              <a href="#" class="nav-link">Orçamentos</a>
              <a href="#" class="nav-link">Configurações</a>
            </nav>
            
            <div class="user-actions">
              <button class="action-button">
                <i data-feather="bell" width="18" height="18"></i>
              </button>
              <button class="action-button">
                <i data-feather="settings" width="18" height="18"></i>
              </button>
              <button class="action-button">
                <i data-feather="user" width="18" height="18"></i>
              </button>
            </div>
          </div>
        </div>
      </header>
    `;
    
    // Inicializar Feather Icons após renderizar
    setTimeout(() => {
      if (typeof feather !== 'undefined') {
        feather.replace();
      }
    }, 0);
  }
}

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