components/header.js

class CustomHeader extends HTMLElement {
    connectedCallback() {
        this.attachShadow({ mode: 'open' });
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    background-color: white;
                    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
                    position: sticky;
                    top: 0;
                    z-index: 1000;
                }
                
                header {
                    display: flex;
                    justify-content: space-between;
                    align-items: center;
                    padding: 1rem 2rem;
                    max-width: 1200px;
                    margin: 0 auto;
                }
                
                .logo {
                    font-weight: 700;
                    font-size: 1.25rem;
                    color: #EF4444;
                }
                
                nav ul {
                    display: flex;
                    gap: 1.5rem;
                    list-style: none;
                    margin: 0;
                    padding: 0;
                }
                
                nav a {
                    font-weight: 500;
                    color: #333;
                    transition: color 0.2s;
                    position: relative;
                }
                
                nav a:hover {
                    color: #EF4444;
                }
                
                nav a::after {
                    content: '';
                    position: absolute;
                    bottom: -4px;
                    left: 0;
                    width: 0;
                    height: 2px;
                    background-color: #EF4444;
                    transition: width 0.2s;
                }
                
                nav a:hover::after {
                    width: 100%;
                }
                .lang-switcher {
                    display: flex;
                    gap: 0.5rem;
                    align-items: center;
                }
                
                .lang-switcher a {
                    font-weight: 600;
                    color: #6B7280;
                    font-size: 1.2rem;
                    text-decoration: none;
                    transition: color 0.2s;
                }
                
                .lang-switcher a:hover {
                    color: #EF4444;
                }
                
                .lang-switcher a.active {
                    color: #EF4444;
                    transform: scale(1.1);
                }
.mobile-menu-button {
                    display: none;
                    background: none;
                    border: none;
                    cursor: pointer;
                }
                
                @media (max-width: 768px) {
                    nav {
                        position: fixed;
                        top: 70px;
                        left: 0;
                        width: 100%;
                        background-color: white;
                        padding: 1rem;
                        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
                        transform: translateY(-150%);
                        transition: transform 0.3s ease;
                    }
                    
                    nav.active {
                        transform: translateY(0);
                    }
                    
                    nav ul {
                        flex-direction: column;
                        gap: 1rem;
                    }
                    
                    .mobile-menu-button {
                        display: block;
                    }
                    .lang-switcher {
                        margin-top: 1rem;
                        justify-content: center;
                    }
}
            </style>
            <header>
                <a href="#" class="logo">Alexander Adolfsson Coaching</a>
                
                <button class="mobile-menu-button">
                    <i data-feather="menu"></i>
                </button>
                
                <nav>
                    <ul>
                        <li><a href="/">Hem</a></li>
                        <li><a href="/about.html">Om mig</a></li>
                        <li><a href="#services">Tjänster</a></li>
                        <li><a href="#pricing">Priser</a></li>
                        <li><a href="#booking">Boka</a></li>
                        <li><a href="#contact">Kontakt</a></li>
</ul>
                    <div class="lang-switcher">
                        <a href="?lang=sv" class="${window.location.search.includes('lang=sv') ? 'active' : ''}">🇸🇪</a>
                        <span>|</span>
                        <a href="?lang=en" class="${window.location.search.includes('lang=en') ? 'active' : ''}">🇬🇧</a>
                        <span>|</span>
                        <a href="?lang=es" class="${window.location.search.includes('lang=es') ? 'active' : ''}">🇪🇸</a>
                    </div>
</nav>
            </header>
        `;

        // Mobile menu toggle
        const mobileMenuButton = this.shadowRoot.querySelector('.mobile-menu-button');
        const nav = this.shadowRoot.querySelector('nav');

        mobileMenuButton.addEventListener('click', () => {
            nav.classList.toggle('active');
        });

        // Close menu when clicking a link
        const navLinks = this.shadowRoot.querySelectorAll('nav a');
        navLinks.forEach(link => {
            link.addEventListener('click', () => {
                nav.classList.remove('active');
            });
        });

        // Load Feather icons after component is rendered
        if (window.feather) {
            feather.replace();
        } else {
            document.addEventListener('DOMContentLoaded', () => {
                if (window.feather) {
                    feather.replace();
                }
            });
        }
    }
}

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