components/navbar.js

class CustomNavbar extends HTMLElement {
  connectedCallback() {
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        nav {
          background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
          padding: 1rem 2rem;
          display: flex;
          justify-content: space-between;
          align-items: center;
          border-bottom: 2px solid #dc2626;
          box-shadow: 0 4px 6px -1px rgba(220, 38, 38, 0.1);
        }
        .logo {
          color: white;
          font-weight: bold;
          font-size: 1.5rem;
          background: linear-gradient(45deg, #ffffff, #dc2626);
          background-clip: text;
          -webkit-background-clip: text;
          -webkit-text-fill-color: transparent;
        }
        ul {
          display: flex;
          gap: 2rem;
          list-style: none;
          margin: 0;
          padding: 0;
        }
        a {
          color: #e5e5e5;
          text-decoration: none;
          transition: all 0.3s ease;
          font-weight: 500;
        }
        a:hover {
          color: #dc2626;
          transform: translateY(-1px);
        }
        .nav-link {
          position: relative;
        }
        .nav-link::after {
          content: '';
          position: absolute;
          width: 0;
          height: 2px;
          bottom: -4px;
          left: 0;
          background: #dc2626;
          transition: width 0.3s ease;
        }
        .nav-link:hover::after {
          width: 100%;
        }
        @media (max-width: 768px) {
          nav {
            flex-direction: column;
            gap: 1rem;
            padding: 1rem;
          }
          ul {
            gap: 1rem;
          }
        }
      </style>
      <nav>
        <div class="logo">汉字猎人</div>
        <ul>
          <li><a href="/" class="nav-link">Home</a></li>
          <li><a href="/about.html" class="nav-link">About</a></li>
          <li><a href="/contact.html" class="nav-link">Contact</a></li>
        </ul>
      </nav>
    `;
  }
}

customElements.define('custom-navbar', CustomNavbar);