components/crypto-navbar.js

class CryptoNavbar extends HTMLElement {
    connectedCallback() {
        this.attachShadow({ mode: 'open' });
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    position: sticky;
                    top: 0;
                    z-index: 50;
                }
                
                nav {
                    background: linear-gradient(135deg, rgba(17, 24, 39, 0.95), rgba(31, 41, 55, 0.95));
                    padding: 1rem 2rem;
                    display: flex;
                    justify-content: space-between;
                    align-items: center;
                    backdrop-filter: blur(10px);
                    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                }
                
                .logo {
                    color: white;
                    font-weight: 800;
                    font-size: 1.5rem;
                    background: linear-gradient(135deg, #10b981, #059669);
                    -webkit-background-clip: text;
                    -webkit-text-fill-color: transparent;
                    background-clip: text;
                }
                
                .nav-links {
                    display: flex;
                    gap: 2rem;
                    list-style: none;
                    margin: 0;
                    padding: 0;
                    align-items: center;
                }
                
                .nav-link {
                    color: white;
                    text-decoration: none;
                    font-weight: 500;
                    transition: all 0.3s ease;
                    display: flex;
                    align-items: center;
                    gap: 0.5rem;
                }
                
                .nav-link:hover {
                    color: #10b981;
                    transform: translateY(-1px);
                }
                
                .search-container {
                    position: relative;
                    display: flex;
                    align-items: center;
                }
                
                .search-input {
                    background: linear-gradient(145deg, #1f2937, #111827);
                    border: 1px solid rgba(255, 255, 255, 0.2);
                    border-radius: 25px;
                    padding: 0.5rem 1rem 0.5rem 2.5rem;
                    color: white;
                    transition: all 0.3s ease;
                    box-shadow: inset 4px 4px 8px #0a0e14, inset -4px -4px 8px #243142;
                }
                
                .search-input:focus {
                    outline: none;
                    border-color: #10b981;
                }
                
                .search-icon {
                    position: absolute;
                    left: 1rem;
                    color: #9ca3af;
                }
                
                .mobile-menu-btn {
                    display: none;
                    background: none;
                    border: none;
                    color: white;
                    cursor: pointer;
                }
                
                @media (max-width: 768px) {
                    nav {
                        padding: 1rem;
                    }
                    
                    .nav-links {
                        display: none;
                        position: absolute;
                        top: 100%;
                        left: 0;
                        right: 0;
                        background: #111827;
                        flex-direction: column;
                        padding: 1rem;
                        gap: 1rem;
                    }
                    
                    .nav-links.active {
                        display: flex;
                    }
                    
                    .mobile-menu-btn {
                        display: block;
                    }
                }
            </style>
            <nav>
                <div class="logo">CryptoSphere</div>
                
                <ul class="nav-links">
                    <li>
                        <a href="/crypto-tracker.html" class="nav-link">
                            <i data-feather="home"></i>
                            Home
                        </a>
                    </li>
                    <li>
                        <a href="#market-overview" class="nav-link">
                                <i data-feather="trending-up"></i>
                                Markets
                            </a>
                        </li>
                        <li>
                            <a href="/crypto-portfolio.html" class="nav-link">
                            <i data-feather="pie-chart"></i>
                            Portfolio
                        </a>
                    </li>
                    <li>
                        <a href="/crypto-analytics.html" class="nav-link">
                                <i data-feather="bar-chart"></i>
                                Analytics
                            </a>
                        </li>
                        <li class="search-container">
                            <i data-feather="search" class="search-icon"></i>
                            <input type="search" placeholder="Search cryptocurrencies..." class="search-input">
                        </li>
                    </ul>
                    
                    <button class="mobile-menu-btn">
                        <i data-feather="menu"></i>
                    </button>
                </nav>
            `;
            
            this.setupMobileMenu();
            this.setupSearch();
        }
        
        setupMobileMenu() {
            const menuBtn = this.shadowRoot.querySelector('.mobile-menu-btn');
            const navLinks = this.shadowRoot.querySelector('.nav-links');
            
            menuBtn.addEventListener('click', () => {
                navLinks.classList.toggle('active');
                const icon = menuBtn.querySelector('i');
                if (navLinks.classList.contains('active')) {
                icon.setAttribute('data-feather', 'x');
            } else {
                icon.setAttribute('data-feather', 'menu');
            }
            feather.replace();
        });
    }
    
    setupSearch() {
        const searchInput = this.shadowRoot.querySelector('.search-input');
        
        searchInput.addEventListener('input', (e) => {
            const query = e.target.value;
            this.searchCryptos(query);
        });
    }
    
    searchCryptos(query) {
        const event = new CustomEvent('crypto-search', {
            detail: { query }
        });
        
        this.shadowRoot.dispatchEvent(event);
    }
}

customElements.define('crypto-navbar', CryptoNavbar);