class CustomNavbar extends HTMLElement {
    connectedCallback() {
        this.attachShadow({ mode: 'open' });
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    width: 100%;
                    position: sticky;
                    top: 0;
                    z-index: 50;
                    background-color: rgba(15, 23, 42, 0.8);
                    backdrop-filter: blur(10px);
                    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                }
                
                nav {
                    max-width: 1200px;
                    margin: 0 auto;
                    padding: 1rem 2rem;
                    display: flex;
                    justify-content: space-between;
                    align-items: center;
                }
                
                .logo {
                    font-size: 1.5rem;
                    font-weight: 700;
                    color: white;
                    display: flex;
                    align-items: center;
                    gap: 0.5rem;
                }
                
                .logo span {
                    color: #10b981;
                }
                
                .nav-links {
                    display: flex;
                    gap: 2rem;
                }
                
                .nav-links a {
                    color: rgba(255, 255, 255, 0.8);
                    font-weight: 500;
                    transition: color 0.2s;
                    text-decoration: none;
                }
                
                .nav-links a:hover {
                    color: #10b981;
                }
                
                .nav-links a.active {
                    color: #10b981;
                    font-weight: 600;
                }
                
                .mobile-menu-btn {
                    display: none;
                    background: none;
                    border: none;
                    color: white;
                    cursor: pointer;
                }
                
                @media (max-width: 768px) {
                    .nav-links {
                        display: none;
                    }
                    
                    .mobile-menu-btn {
                        display: block;
                    }
                }
            </style>
            
            <nav>
                <a href="index.html" class="logo">
                    <i data-feather="navigation"></i>
                    <span>SkySlicer</span>
                </a>
                
                <div class="nav-links">
                    <a href="index.html" class="active">Home</a>
                    <a href="simulator.html">Simulator</a>
                    <a href="challenges.html">Challenges</a>
                    <a href="about.html">About</a>
                </div>
                
                <button class="mobile-menu-btn">
                    <i data-feather="menu"></i>
                </button>
            </nav>
        `;
    }
}

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