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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>HuggingGPT</title>
<style>
*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --bg:#111;--sidebar:#0a0a0a;--card:#1a1a1a;--border:#2a2a2a;
  --accent:#10a37f;--accent2:#1a7f5a;--text:#ececec;--muted:#888;
  --input-bg:#1e1e1e;--bubble-user:#10a37f;--bubble-ai:#1e1e1e;
}
body{font-family:'Segoe UI',system-ui,sans-serif;background:var(--bg);color:var(--text);height:100vh;display:flex;overflow:hidden;}

/* ONBOARDING */
#onboarding{position:fixed;inset:0;background:rgba(0,0,0,0.95);display:flex;align-items:center;justify-content:center;z-index:100;}
#onboarding-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:40px;width:440px;max-width:90vw;}
#onboarding-card h1{font-size:1.6rem;margin-bottom:6px;}
#onboarding-card p{color:var(--muted);font-size:0.9rem;margin-bottom:28px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:0.8rem;color:var(--muted);margin-bottom:6px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;}
.field input,.field select,.field textarea{width:100%;background:var(--input-bg);border:1px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--text);font-size:0.95rem;outline:none;transition:border 0.2s;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);}
.field select option{background:var(--card);}
.btn{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:12px 24px;font-size:0.95rem;font-weight:600;cursor:pointer;width:100%;transition:background 0.2s;}
.btn:hover{background:var(--accent2);}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text);}
.btn-ghost:hover{background:var(--card);}

/* SIDEBAR */
#sidebar{width:260px;min-width:260px;background:var(--sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:16px;gap:8px;}
#sidebar-title{font-weight:700;font-size:1.1rem;color:var(--accent);padding:8px 4px;}
.new-chat-btn{background:var(--card);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:10px 14px;font-size:0.9rem;cursor:pointer;text-align:left;transition:background 0.2s;}
.new-chat-btn:hover{background:#222;}
.section-label{font-size:0.7rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--muted);font-weight:700;padding:12px 4px 4px;}
.mode-btn{background:transparent;border:1px solid transparent;color:var(--muted);border-radius:6px;padding:8px 12px;font-size:0.85rem;cursor:pointer;text-align:left;transition:all 0.15s;width:100%;}
.mode-btn:hover{background:var(--card);color:var(--text);}
.mode-btn.active{background:var(--card);border-color:var(--border);color:var(--text);}
#custom-model-input{display:none;margin-top:4px;}
#custom-model-input input{width:100%;background:var(--input-bg);border:1px solid var(--border);border-radius:6px;padding:8px 10px;color:var(--text);font-size:0.82rem;outline:none;}
.sidebar-spacer{flex:1;}
.tts-toggle{display:flex;align-items:center;gap:10px;padding:10px 4px;border-top:1px solid var(--border);}
.tts-toggle label{font-size:0.85rem;color:var(--muted);flex:1;}
.toggle{position:relative;width:40px;height:22px;}
.toggle input{opacity:0;width:0;height:0;}
.slider{position:absolute;inset:0;background:#333;border-radius:22px;cursor:pointer;transition:background 0.2s;}
.slider:before{content:'';position:absolute;height:16px;width:16px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:transform 0.2s;}
.toggle input:checked + .slider{background:var(--accent);}
.toggle input:checked + .slider:before{transform:translateX(18px);}
#user-profile{display:flex;align-items:center;gap:10px;padding:10px 4px;border-top:1px solid var(--border);}
.avatar{width:32px;height:32px;border-radius:8px;background:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex-shrink:0;}
.profile-info{flex:1;min-width:0;}
.profile-name{font-size:0.88rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.profile-sub{font-size:0.74rem;color:var(--muted);}

/* MAIN */
#main{flex:1;display:flex;flex-direction:column;overflow:hidden;}
#chat-area{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:20px;scroll-behavior:smooth;}
#chat-area::-webkit-scrollbar{width:6px;}
#chat-area::-webkit-scrollbar-track{background:transparent;}
#chat-area::-webkit-scrollbar-thumb{background:#333;border-radius:3px;}

/* GREETING */
#greeting{text-align:center;margin:auto;padding:40px 20px;}
#greeting h1{font-size:2.4rem;font-weight:700;margin-bottom:8px;}
#greeting p{color:var(--muted);font-size:1rem;}

/* MESSAGES */
.msg{display:flex;gap:12px;max-width:780px;width:100%;margin:0 auto;}
.msg.user{flex-direction:row-reverse;}
.msg-avatar{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;flex-shrink:0;}
.msg.user .msg-avatar{background:var(--accent);}
.msg.ai .msg-avatar{background:#333;font-size:16px;}
.msg-content{background:var(--bubble-ai);border:1px solid var(--border);border-radius:12px;padding:14px 18px;font-size:0.92rem;line-height:1.6;max-width:680px;word-break:break-word;}
.msg.user .msg-content{background:#1a3a2f;border-color:#2a5a44;}
.msg-content code{background:#0d0d0d;border:1px solid var(--border);border-radius:4px;padding:1px 6px;font-size:0.85em;font-family:monospace;}
.msg-content pre{background:#0d0d0d;border:1px solid var(--border);border-radius:8px;padding:14px;overflow-x:auto;margin:10px 0;}
.msg-content pre code{background:none;border:none;padding:0;}
.msg-content img{max-width:100%;border-radius:8px;margin:8px 0;display:block;}
.msg-content video{max-width:100%;border-radius:8px;margin:8px 0;display:block;}
.gen-status{color:var(--muted);font-size:0.82rem;font-style:italic;margin-top:6px;}
.tts-btn{background:transparent;border:none;color:var(--muted);cursor:pointer;font-size:14px;padding:4px 6px;border-radius:4px;margin-top:6px;display:inline-flex;align-items:center;gap:4px;transition:color 0.2s;}
.tts-btn:hover{color:var(--text);}

/* INPUT */
#input-area{padding:16px 24px 24px;border-top:1px solid var(--border);}
#input-box{background:var(--input-bg);border:1px solid var(--border);border-radius:16px;padding:12px 16px;display:flex;align-items:flex-end;gap:10px;max-width:780px;margin:0 auto;transition:border 0.2s;}
#input-box:focus-within{border-color:#444;}
#msg-input{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:0.95rem;resize:none;max-height:160px;line-height:1.5;font-family:inherit;}
#msg-input::placeholder{color:#555;}
.input-actions{display:flex;align-items:center;gap:6px;}
.icon-btn{background:transparent;border:none;color:var(--muted);cursor:pointer;padding:6px;border-radius:6px;font-size:16px;transition:color 0.2s,background 0.2s;}
.icon-btn:hover{color:var(--text);background:#252525;}
#send-btn{background:var(--accent);border:none;color:#fff;width:34px;height:34px;border-radius:8px;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:background 0.2s;}
#send-btn:hover{background:var(--accent2);}
#send-btn:disabled{background:#333;cursor:not-allowed;}
#attach-preview{max-width:780px;margin:0 auto 8px;display:none;gap:8px;}
#attach-preview img,#attach-preview video{max-height:80px;border-radius:6px;border:1px solid var(--border);}
.typing{display:flex;gap:4px;padding:6px 0;}
.typing span{width:8px;height:8px;background:var(--muted);border-radius:50%;animation:bounce 1.2s infinite;}
.typing span:nth-child(2){animation-delay:0.2s;}
.typing span:nth-child(3){animation-delay:0.4s;}
@keyframes bounce{0%,60%,100%{transform:translateY(0);}30%{transform:translateY(-6px);}}
#file-input{display:none;}
</style>
</head>
<body>

<!-- ONBOARDING -->
<div id="onboarding">
  <div id="onboarding-card">
    <h1>Welcome to HuggingGPT</h1>
    <p>Let's personalize your experience before we start.</p>
    <div class="field">
      <label>What should I call you?</label>
      <input type="text" id="ob-name" placeholder="e.g. Alex">
    </div>
    <div class="field">
      <label>AI Personality</label>
      <select id="ob-personality">
        <option>Professional & Concise</option>
        <option>Friendly & Creative</option>
        <option>Sarcastic & Witty</option>
        <option>Expert Coder</option>
        <option>No restrictions (research mode)</option>
      </select>
    </div>
    <button class="btn" onclick="finishOnboarding()">Get Started →</button>
  </div>
</div>

<!-- SIDEBAR -->
<div id="sidebar">
  <div id="sidebar-title">🤗 HuggingGPT</div>
  <button class="new-chat-btn" onclick="newChat()">+ New chat</button>

  <div class="section-label">Model</div>
  <button class="mode-btn active" onclick="setMode(this,'qwen')" data-mode="qwen">⚡ Qwen 2.5 7B</button>
  <button class="mode-btn" onclick="setMode(this,'kimi')" data-mode="kimi">🌙 Kimi K2</button>
  <button class="mode-btn" onclick="setMode(this,'small')" data-mode="small">🪶 Qwen 0.5B (fast)</button>
  <button class="mode-btn" onclick="setMode(this,'custom')" data-mode="custom">🔧 Custom</button>
  <div id="custom-model-input"><input type="text" id="custom-url" placeholder="user/model-repo"></div>

  <div class="section-label">Image Gen</div>
  <button class="mode-btn active" onclick="setImgMode(this,'flash')" data-img="flash">⚡ FLUX Schnell (fast)</button>
  <button class="mode-btn" onclick="setImgMode(this,'full')" data-img="full">🖼 FLUX Dev (quality)</button>

  <div class="sidebar-spacer"></div>

  <div class="tts-toggle">
    <label>🔊 TTS (Kokoro)</label>
    <label class="toggle">
      <input type="checkbox" id="tts-toggle" onchange="toggleTTS(this)">
      <span class="slider"></span>
    </label>
  </div>

  <div id="user-profile">
    <div class="avatar" id="user-avatar">?</div>
    <div class="profile-info">
      <div class="profile-name" id="user-name-display">Guest</div>
      <div class="profile-sub" id="user-personality-display">Personal account</div>
    </div>
  </div>
</div>

<!-- MAIN CHAT -->
<div id="main">
  <div id="chat-area">
    <div id="greeting">
      <h1 id="greeting-text">Good to see you.</h1>
      <p>Ask me anything — I can generate images, videos, and speak to you.</p>
    </div>
  </div>

  <div id="attach-preview"></div>

  <div id="input-area">
    <div id="input-box">
      <textarea id="msg-input" rows="1" placeholder="Ask anything..." onkeydown="handleKey(event)" oninput="autoResize(this)"></textarea>
      <div class="input-actions">
        <button class="icon-btn" onclick="document.getElementById('file-input').click()" title="Attach image/video">📎</button>
        <button id="send-btn" onclick="sendMessage()">↑</button>
      </div>
    </div>
    <input type="file" id="file-input" accept="image/*,video/*" onchange="handleAttach(this)">
  </div>
</div>

<script>
// --- STATE ---
let state = {
  name: 'Guest', personality: 'Professional & Concise',
  mode: 'qwen', imgMode: 'flash',
  tts: false, history: [],
  attachment: null, attachType: null
};

const MODELS = {
  qwen:   'Qwen/Qwen2.5-7B-Instruct',
  kimi:   'moonshotai/Kimi-K2-Instruct',
  small:  'Qwen/Qwen2.5-0.5B-Instruct',
  custom: null
};

const IMG_MODELS = {
  flash: 'black-forest-labs/FLUX.1-schnell',
  full:  'black-forest-labs/FLUX.1-dev'
};

const VIDEO_MODEL = 'ByteDance/AnimateDiff-Lightning';
const TTS_MODEL   = 'hexgrad/Kokoro-82M';
const HF_API      = 'https://api-inference.huggingface.co/models/';

// --- ONBOARDING ---
function finishOnboarding(){
  const name = document.getElementById('ob-name').value.trim() || 'Guest';
  const pers = document.getElementById('ob-personality').value;
  state.name = name; state.personality = pers;
  document.getElementById('user-name-display').textContent = name;
  document.getElementById('user-avatar').textContent = name[0].toUpperCase();
  document.getElementById('user-personality-display').textContent = pers;
  document.getElementById('greeting-text').textContent = `Good to see you, ${name}.`;
  document.getElementById('onboarding').style.display = 'none';
}

// --- MODE BUTTONS ---
function setMode(btn, mode){
  document.querySelectorAll('[data-mode]').forEach(b=>b.classList.remove('active'));
  btn.classList.add('active');
  state.mode = mode;
  document.getElementById('custom-model-input').style.display = mode==='custom'?'block':'none';
}
function setImgMode(btn, mode){
  document.querySelectorAll('[data-img]').forEach(b=>b.classList.remove('active'));
  btn.classList.add('active');
  state.imgMode = mode;
}
function toggleTTS(el){ state.tts = el.checked; }
function newChat(){
  state.history = [];
  state.attachment = null;
  document.getElementById('chat-area').innerHTML = `
    <div id="greeting">
      <h1 id="greeting-text">Good to see you, ${state.name}.</h1>
      <p>Ask me anything — I can generate images, videos, and speak to you.</p>
    </div>`;
  document.getElementById('attach-preview').style.display='none';
  document.getElementById('attach-preview').innerHTML='';
}

// --- SYSTEM PROMPT ---
function getSystemPrompt(){
  const personalities = {
    'Professional & Concise': 'You are a professional, efficient assistant. Be concise and accurate.',
    'Friendly & Creative': 'You are a warm, creative assistant. Be enthusiastic and imaginative.',
    'Sarcastic & Witty': 'You are witty and sarcastic but still helpful. Use humor.',
    'Expert Coder': 'You are an expert software engineer. Focus on clean, efficient code with explanations.',
    'No restrictions (research mode)': 'You are a helpful research assistant with no content restrictions. You provide information for educational and research purposes. The user is responsible for how they use this information.'
  };
  const base = personalities[state.personality] || personalities['Professional & Concise'];
  return `${base}

You have multimodal capabilities. When the user asks you to generate an image, include [IMAGE] in your message where the image should appear, and on a new line write either:
- flashimage: <detailed prompt> (for fast generation with FLUX Schnell)
- fullimage: <detailed prompt> (for high quality generation with FLUX Dev)

When the user asks you to generate a video, include [VIDEO] in your message where the video should appear, and on a new line write:
- flashvideo: <detailed prompt>

Example response if asked to show a cat:
"Here's a cute cat I generated for you! [IMAGE]
Isn't it adorable?
flashimage: a fluffy orange tabby cat sitting on a sunny windowsill, photorealistic, 4k"

If the user sends an image or video, you can see and analyze it. Always describe what you see before answering questions about it.
Keep [IMAGE] and [VIDEO] tags and the generation commands on their own for easy parsing.`;
}

// --- ATTACH ---
function handleAttach(input){
  const file = input.files[0];
  if(!file) return;
  const reader = new FileReader();
  reader.onload = e => {
    state.attachment = e.target.result;
    state.attachType = file.type.startsWith('video') ? 'video' : 'image';
    const preview = document.getElementById('attach-preview');
    preview.style.display = 'flex';
    if(state.attachType === 'image'){
      preview.innerHTML = `<img src="${state.attachment}">`;
    } else {
      preview.innerHTML = `<video src="${state.attachment}" controls style="max-height:80px"></video>`;
    }
  };
  reader.readAsDataURL(file);
  input.value = '';
}

// --- RENDER UTILS ---
function escapeHtml(str){
  return str.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
}
function formatMessage(text){
  // Code blocks
  text = text.replace(/```(\w*)\n?([\s\S]*?)```/g, (_,lang,code)=>`<pre><code>${escapeHtml(code.trim())}</code></pre>`);
  // Inline code
  text = text.replace(/`([^`]+)`/g, (_,c)=>`<code>${escapeHtml(c)}</code>`);
  // Bold
  text = text.replace(/\*\*(.+?)\*\*/g,'<strong>$1</strong>');
  // Newlines
  text = text.replace(/\n/g,'<br>');
  return text;
}

// --- PARSE AI RESPONSE FOR GENERATION COMMANDS ---
async function processAIResponse(rawText, msgDiv){
  // Remove generation commands from display text
  let displayText = rawText;
  const imgCommands = [];
  const vidCommands = [];

  displayText = displayText.replace(/^(flashimage|fullimage): (.+)$/gm, (match, type, prompt)=>{
    imgCommands.push({type, prompt: prompt.trim()});
    return '';
  });
  displayText = displayText.replace(/^flashvideo: (.+)$/gm, (_, prompt)=>{
    vidCommands.push(prompt.trim());
    return '';
  });
  displayText = displayText.trim();

  // Render text with [IMAGE] and [VIDEO] placeholders
  let rendered = formatMessage(displayText);
  let imgIdx = 0, vidIdx = 0;
  const imgPlaceholders = rendered.match(/\[IMAGE\]/g) || [];
  const vidPlaceholders = rendered.match(/\[VIDEO\]/g) || [];

  // Replace [IMAGE] with spinner placeholder divs
  rendered = rendered.replace(/\[IMAGE\]/g, ()=>{
    const id = `gen-img-${Date.now()}-${imgIdx++}`;
    return `<div id="${id}"><span class="gen-status">🎨 Generating image...</span></div>`;
  });
  rendered = rendered.replace(/\[VIDEO\]/g, ()=>{
    const id = `gen-vid-${Date.now()}-${vidIdx++}`;
    return `<div id="${id}"><span class="gen-status">🎬 Generating video...</span></div>`;
  });

  msgDiv.innerHTML = rendered;

  // Add TTS button
  if(rawText.trim()){
    const ttsBtn = document.createElement('button');
    ttsBtn.className = 'tts-btn';
    ttsBtn.innerHTML = '🔊 Listen';
    ttsBtn.onclick = () => speakText(displayText.replace(/\[IMAGE\]|\[VIDEO\]/g,''));
    msgDiv.appendChild(ttsBtn);
    if(state.tts) speakText(displayText.replace(/\[IMAGE\]|\[VIDEO\]/g,''));
  }

  // Generate images
  const imgEls = msgDiv.querySelectorAll('[id^="gen-img-"]');
  for(let i=0;i<imgCommands.length && i<imgEls.length;i++){
    const {type, prompt} = imgCommands[i];
    const el = imgEls[i];
    try {
      const modelId = type==='flashimage' ? IMG_MODELS.flash : IMG_MODELS.full;
      const blob = await generateImage(modelId, prompt);
      const url = URL.createObjectURL(blob);
      el.innerHTML = `<img src="${url}" alt="${escapeHtml(prompt)}">`;
    } catch(e){
      el.innerHTML = `<span class="gen-status">❌ Image gen failed: ${e.message}</span>`;
    }
  }

  // Generate videos
  const vidEls = msgDiv.querySelectorAll('[id^="gen-vid-"]');
  for(let i=0;i<vidCommands.length && i<vidEls.length;i++){
    const prompt = vidCommands[i];
    const el = vidEls[i];
    try {
      const blob = await generateVideo(prompt);
      const url = URL.createObjectURL(blob);
      el.innerHTML = `<video src="${url}" controls></video>`;
    } catch(e){
      el.innerHTML = `<span class="gen-status">❌ Video gen failed: ${e.message}</span>`;
    }
  }
}

// --- HF API CALLS ---
async function callLLM(prompt, imageData){
  const modelId = state.mode==='custom'
    ? (document.getElementById('custom-url').value.trim() || MODELS.qwen)
    : MODELS[state.mode] || MODELS.qwen;

  const messages = [...state.history];

  if(imageData){
    messages.push({role:'user', content:[
      {type:'image_url', image_url:{url: imageData}},
      {type:'text', text: prompt}
    ]});
  } else {
    messages.push({role:'user', content: prompt});
  }

  const sysPrompt = getSystemPrompt();

  const body = {
    model: modelId,
    messages: [{role:'system', content: sysPrompt}, ...messages],
    max_tokens: 1024,
    temperature: 0.7
  };

  const res = await fetch(`https://api-inference.huggingface.co/v1/chat/completions`, {
    method:'POST',
    headers:{'Content-Type':'application/json'},
    body: JSON.stringify(body)
  });

  if(!res.ok){
    // Fallback to text generation endpoint
    const res2 = await fetch(`${HF_API}${modelId}`, {
      method:'POST',
      headers:{'Content-Type':'application/json'},
      body: JSON.stringify({
        inputs: `System: ${sysPrompt}\n\n${state.history.map(m=>`${m.role==='user'?'User':'Assistant'}: ${m.content}`).join('\n')}\nUser: ${prompt}\nAssistant:`,
        parameters:{max_new_tokens:512, temperature:0.7, return_full_text:false}
      })
    });
    if(!res2.ok) throw new Error(`API error: ${res2.status}`);
    const data2 = await res2.json();
    return data2[0]?.generated_text || 'No response';
  }

  const data = await res.json();
  return data.choices?.[0]?.message?.content || 'No response';
}

async function generateImage(modelId, prompt){
  const res = await fetch(`${HF_API}${modelId}`, {
    method:'POST',
    headers:{'Content-Type':'application/json'},
    body: JSON.stringify({inputs: prompt})
  });
  if(!res.ok) throw new Error(`${res.status}`);
  return res.blob();
}

async function generateVideo(prompt){
  const res = await fetch(`${HF_API}${VIDEO_MODEL}`, {
    method:'POST',
    headers:{'Content-Type':'application/json'},
    body: JSON.stringify({inputs: prompt})
  });
  if(!res.ok) throw new Error(`${res.status}`);
  return res.blob();
}

async function speakText(text){
  try {
    const clean = text.replace(/<[^>]+>/g,'').substring(0, 500);
    const res = await fetch(`${HF_API}${TTS_MODEL}`, {
      method:'POST',
      headers:{'Content-Type':'application/json'},
      body: JSON.stringify({inputs: clean})
    });
    if(!res.ok) return;
    const blob = await res.blob();
    const url = URL.createObjectURL(blob);
    const audio = new Audio(url);
    audio.play();
  } catch(e){ console.error('TTS failed', e); }
}

// --- SEND MESSAGE ---
async function sendMessage(){
  const input = document.getElementById('msg-input');
  const text = input.value.trim();
  if(!text && !state.attachment) return;

  // Hide greeting
  const greeting = document.getElementById('greeting');
  if(greeting) greeting.remove();

  const chatArea = document.getElementById('chat-area');
  const sendBtn = document.getElementById('send-btn');
  sendBtn.disabled = true;

  // Add user message
  const userDiv = document.createElement('div');
  userDiv.className = 'msg user';
  let userContent = text;
  if(state.attachment){
    if(state.attachType==='image'){
      userContent = `<img src="${state.attachment}" style="max-height:120px;border-radius:6px;display:block;margin-bottom:6px;">${text?'<br>'+escapeHtml(text):''}`;
    } else {
      userContent = `<video src="${state.attachment}" controls style="max-height:120px;border-radius:6px;display:block;margin-bottom:6px;"></video>${text?'<br>'+escapeHtml(text):''}`;
    }
  } else {
    userContent = formatMessage(text);
  }
  userDiv.innerHTML = `
    <div class="msg-avatar">${state.name[0]?.toUpperCase()||'U'}</div>
    <div class="msg-content">${userContent}</div>`;
  chatArea.appendChild(userDiv);

  // Add typing indicator
  const typingDiv = document.createElement('div');
  typingDiv.className = 'msg ai';
  typingDiv.innerHTML = `
    <div class="msg-avatar">🤗</div>
    <div class="msg-content"><div class="typing"><span></span><span></span><span></span></div></div>`;
  chatArea.appendChild(typingDiv);
  chatArea.scrollTop = chatArea.scrollHeight;

  const userText = text;
  const attachData = state.attachment;

  // Clear input
  input.value = '';
  autoResize(input);
  state.attachment = null;
  document.getElementById('attach-preview').style.display='none';
  document.getElementById('attach-preview').innerHTML='';

  try {
    const response = await callLLM(userText, attachData);

    // Update history
    state.history.push({role:'user', content: userText});
    state.history.push({role:'assistant', content: response});
    if(state.history.length > 20) state.history = state.history.slice(-20);

    // Replace typing with real response
    const aiDiv = document.createElement('div');
    aiDiv.className = 'msg ai';
    const msgContent = document.createElement('div');
    msgContent.className = 'msg-content';
    aiDiv.innerHTML = `<div class="msg-avatar">🤗</div>`;
    aiDiv.appendChild(msgContent);
    typingDiv.replaceWith(aiDiv);

    await processAIResponse(response, msgContent);

  } catch(e){
    typingDiv.querySelector('.msg-content').innerHTML = `<span style="color:#e55">Error: ${e.message}</span>`;
  }

  chatArea.scrollTop = chatArea.scrollHeight;
  sendBtn.disabled = false;
  input.focus();
}

// --- UI HELPERS ---
function handleKey(e){
  if(e.key==='Enter' && !e.shiftKey){ e.preventDefault(); sendMessage(); }
}
function autoResize(el){
  el.style.height='auto';
  el.style.height=Math.min(el.scrollHeight, 160)+'px';
}

// Add event listeners when DOM is ready
window.addEventListener('load', function() {
  const startBtn = document.getElementById('ob-start-btn');
  if(startBtn) {
    startBtn.addEventListener('click', finishOnboarding);
  }
  // Also try inline fallback
  window.finishOnboarding = finishOnboarding;
});
</script>
</body>
</html>