components/sidebar.js

class CustomSidebar extends HTMLElement {
    connectedCallback() {
        this.attachShadow({ mode: 'open' });
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    height: 100%;
                }
                .sidebar {
                    display: flex;
                    flex-direction: column;
                    height: 100%;
                    background-color: #111827;
                    color: white;
                }
                .sidebar-header {
                    display: flex;
                    justify-content: space-between;
                    padding: 1rem;
                    border-bottom: 1px solid #374151;
                }
                .sidebar-content {
                    flex: 1;
                    overflow-y: auto;
                    padding: 1rem;
                }
                .sidebar-footer {
                    padding: 1rem;
                    border-top: 1px solid #374151;
                }
                .conversation-btn {
                    width: 100%;
                    text-align: left;
                    padding: 0.5rem;
                    border-radius: 0.375rem;
                    display: flex;
                    align-items: center;
                    transition: background-color 0.2s;
                }
                .conversation-btn:hover {
                    background-color: #374151;
                }
                .section-title {
                    font-size: 0.75rem;
                    color: #9CA3AF;
                    margin-top: 1rem;
                    margin-bottom: 0.5rem;
                    padding-left: 0.5rem;
                }
                .user-btn {
                    width: 100%;
                    display: flex;
                    align-items: center;
                    padding: 0.5rem;
                    border-radius: 0.375rem;
                    transition: background-color 0.2s;
                }
                .user-btn:hover {
                    background-color: #374151;
                }
                .user-avatar {
                    width: 2rem;
                    height: 2rem;
                    border-radius: 9999px;
                    background-color: #3B82F6;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    margin-right: 0.5rem;
                }
            </style>
            <div class="sidebar">
                <div class="sidebar-header">
                    <button class="rounded-lg p-2 hover:bg-gray-700">
                        <i data-feather="plus"></i>
                    </button>
                    <button class="rounded-lg p-2 hover:bg-gray-700">
                        <i data-feather="menu"></i>
                    </button>
                </div>
                <div class="sidebar-content">
                    <button class="conversation-btn">
                        <i data-feather="message-square" class="mr-2 w-4 h-4"></i>
                        <span class="truncate">New Conversation</span>
                    </button>
                    <div class="section-title">Today</div>
                    <button class="conversation-btn">
                        <i data-feather="message-square" class="mr-2 w-4 h-4"></i>
                        <span class="truncate">How to center a div?</span>
                    </button>
                </div>
                <div class="sidebar-footer">
                    <button class="user-btn">
                        <div class="user-avatar">
                            <i data-feather="user" class="w-4 h-4 text-white"></i>
                        </div>
                        <span class="truncate">User Account</span>
                    </button>
                </div>
            </div>
        `;
    }
}

customElements.define('custom-sidebar', CustomSidebar);