<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PAGI Chat - Multi-User Chat Demo</title>
    <link rel="stylesheet" href="/css/style.css">
</head>
<body>
    <!-- Login Screen -->
    <div id="login-screen" class="screen">
        <div class="login-container">
            <div class="login-header">
                <h1>PAGI Chat</h1>
                <p class="subtitle">Multi-User Chat Demo</p>
            </div>
            <form id="login-form">
                <div class="form-group">
                    <label for="username">Choose a username</label>
                    <input type="text" id="username" name="username"
                           placeholder="Enter your name..."
                           maxlength="20"
                           autocomplete="off"
                           required>
                </div>
                <button type="submit" class="btn btn-primary">Join Chat</button>
            </form>
            <div class="pagi-info">
                <p>Powered by <strong>PAGI</strong></p>
                <p class="small">Perl Asynchronous Gateway Interface</p>
            </div>
        </div>
    </div>

    <!-- Main Chat Screen -->
    <div id="chat-screen" class="screen hidden">
        <div class="chat-layout">
            <!-- Sidebar -->
            <aside class="sidebar">
                <div class="sidebar-header">
                    <h2>PAGI Chat</h2>
                    <button id="theme-toggle" class="btn-icon" title="Toggle theme">
                        <span class="icon-sun">&#9728;</span>
                        <span class="icon-moon hidden">&#9790;</span>
                    </button>
                </div>

                <!-- Connection Status -->
                <div id="connection-status" class="connection-status">
                    <span class="status-dot"></span>
                    <span class="status-text">Connecting...</span>
                </div>

                <!-- User Info -->
                <div class="user-info">
                    <span class="user-avatar" id="user-avatar">?</span>
                    <span class="user-name" id="display-name">Loading...</span>
                </div>

                <!-- Rooms List -->
                <div class="sidebar-section">
                    <div class="section-header">
                        <h3>Rooms</h3>
                        <button id="create-room-btn" class="btn-icon" title="Create room">+</button>
                    </div>
                    <ul id="rooms-list" class="nav-list">
                        <!-- Rooms populated by JS -->
                    </ul>
                </div>

                <!-- Users in Room -->
                <div class="sidebar-section">
                    <div class="section-header">
                        <h3>Users</h3>
                        <span id="user-count" class="badge">0</span>
                    </div>
                    <ul id="users-list" class="nav-list">
                        <!-- Users populated by JS -->
                    </ul>
                </div>

                <!-- Server Stats (SSE) -->
                <div class="sidebar-section stats-section">
                    <h3>Server Stats</h3>
                    <div class="stats-grid">
                        <div class="stat">
                            <span class="stat-value" id="stat-users">0</span>
                            <span class="stat-label">Online</span>
                        </div>
                        <div class="stat">
                            <span class="stat-value" id="stat-rooms">0</span>
                            <span class="stat-label">Rooms</span>
                        </div>
                        <div class="stat">
                            <span class="stat-value" id="stat-uptime">0s</span>
                            <span class="stat-label">Uptime</span>
                        </div>
                    </div>
                </div>
            </aside>

            <!-- Main Chat Area -->
            <main class="chat-main">
                <!-- Room Header -->
                <header class="chat-header">
                    <div class="room-info">
                        <h2 id="current-room-name">#general</h2>
                        <span id="typing-indicator" class="typing-indicator hidden"></span>
                    </div>
                    <div class="header-actions">
                        <button id="leave-room-btn" class="btn btn-secondary hidden">Leave Room</button>
                    </div>
                </header>

                <!-- Messages Area -->
                <div id="messages-container" class="messages-container">
                    <div id="messages" class="messages">
                        <!-- Messages populated by JS -->
                    </div>
                </div>

                <!-- Message Input -->
                <div class="message-input-container">
                    <form id="message-form">
                        <input type="text"
                               id="message-input"
                               placeholder="Type a message... (try /help for commands)"
                               autocomplete="off"
                               maxlength="1000">
                        <button type="submit" class="btn btn-primary">Send</button>
                    </form>
                </div>
            </main>
        </div>
    </div>

    <!-- Create Room Modal -->
    <div id="create-room-modal" class="modal hidden">
        <div class="modal-backdrop"></div>
        <div class="modal-content">
            <h3>Create New Room</h3>
            <form id="create-room-form">
                <div class="form-group">
                    <label for="room-name">Room Name</label>
                    <input type="text" id="room-name" name="room-name"
                           placeholder="Enter room name..."
                           maxlength="30"
                           pattern="[a-zA-Z0-9_-]+"
                           required>
                </div>
                <div class="modal-actions">
                    <button type="button" class="btn btn-secondary" id="cancel-create-room">Cancel</button>
                    <button type="submit" class="btn btn-primary">Create</button>
                </div>
            </form>
        </div>
    </div>

    <!-- Toast Notifications -->
    <div id="toast-container" class="toast-container"></div>

    <script src="/js/app.js"></script>
</body>
</html>