class CustomNavbar extends HTMLElement {
  connectedCallback() {
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        nav {
          background: rgba(17, 24, 39, 0.8);
          backdrop-filter: blur(10px);
          padding: 1rem 2rem;
          display: flex;
          justify-content: space-between;
          align-items: center;
          position: sticky;
          top: 0;
          z-index: 50;
          border-bottom: 1px solid rgba(55, 65, 81, 0.5);
        }
        .logo {
          background: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
          -webkit-background-clip: text;
          background-clip: text;
          color: transparent;
          font-weight: 700;
          font-size: 1.5rem;
        }
        ul {
          display: flex;
          gap: 1.5rem;
          list-style: none;
          margin: 0;
          padding: 0;
        }
        a {
          color: #e5e7eb;
          text-decoration: none;
          font-weight: 500;
          transition: all 0.2s;
          display: flex;
          align-items: center;
          gap: 0.5rem;
        }
        a:hover {
          color: #818cf8;
        }
        .nav-buttons {
          display: flex;
          gap: 1rem;
          align-items: center;
        }
        .security-status {
          display: flex;
          align-items: center;
          gap: 0.5rem;
          color: #10b981;
          font-size: 0.875rem;
        }
        .security-dot {
          width: 10px;
          height: 10px;
          background-color: #10b981;
          border-radius: 50%;
          animation: pulse 2s infinite;
        }
        @keyframes pulse {
          0%, 100% { opacity: 1; }
          50% { opacity: 0.5; }
        }
        @media (max-width: 768px) {
          nav {
            flex-direction: column;
            padding: 1rem;
          }
          ul {
            margin-top: 1rem;
            flex-wrap: wrap;
            justify-content: center;
          }
        }
      </style>
      <nav>
        <a href="/" class="logo">Quantum Gene Fortress</a>
        <div class="nav-buttons">
          <ul>
            <li><a href="/dashboard.html"><i data-feather="layout"></i> Dashboard</a></li>
            <li><a href="/features.html"><i data-feather="shield"></i> Features</a></li>
            <li><a href="/about.html"><i data-feather="info"></i> About</a></li>
          </ul>
          <div class="security-status">
            <div class="security-dot"></div>
            <span>PQC Secured</span>
          </div>
        </div>
      </nav>
    `;
  }
}
customElements.define('custom-navbar', CustomNavbar);