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javascript:(function(){if(window.ttsReader){window.ttsReader.show();return}const s=document.createElement('style');s.textContent='.tts-panel{position:fixed;top:20px;right:20px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);padding:20px;border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,0.3);z-index:999999;font-family:system-ui,sans-serif;color:white;min-width:280px}.tts-panel h3{margin:0 0 15px;font-size:18px;font-weight:600}.tts-btn{background:white;color:#667eea;border:none;padding:12px 20px;margin:5px 0;border-radius:8px;cursor:pointer;width:100%;font-size:14px;font-weight:500;transition:all .2s}.tts-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.2)}.tts-btn:disabled{opacity:.5;cursor:not-allowed}.tts-close{position:absolute;top:10px;right:10px;background:rgba(255,255,255,0.2);border:none;color:white;width:28px;height:28px;border-radius:50%;cursor:pointer;font-size:18px;line-height:1}.tts-close:hover{background:rgba(255,255,255,0.3)}.tts-select{width:100%;padding:10px;margin:10px 0;border-radius:8px;border:none;font-size:14px}.tts-slider{width:100%;margin:10px 0}.tts-label{font-size:13px;margin-top:10px;display:block;opacity:.9}';document.head.appendChild(s);const d=document.createElement('div');d.className='tts-panel';d.innerHTML='đ Read Aloud
';document.body.appendChild(d);let u=null,v=[];function loadVoices(){v=speechSynthesis.getVoices();const sel=document.getElementById('tts-voice');sel.innerHTML='';const natural=v.filter(vo=>vo.localService||vo.name.includes('Google')||vo.name.includes('Microsoft')||vo.name.includes('Enhanced')||vo.name.includes('Premium')||vo.name.includes('Natural'));const voices=natural.length>0?natural:v;voices.forEach((vo,i)=>{const o=document.createElement('option');o.value=i;o.textContent=`${vo.name} (${vo.lang})`;if(vo.lang.startsWith('en')&&i===0)o.selected=true;sel.appendChild(o)})}speechSynthesis.onvoiceschanged=loadVoices;loadVoices();function speak(t){speechSynthesis.cancel();if(!t.trim())return alert('No text to read!');u=new SpeechSynthesisUtterance(t);const vIdx=document.getElementById('tts-voice').value;u.voice=v[vIdx]||v[0];u.rate=parseFloat(document.getElementById('tts-rate').value);u.pitch=1;u.volume=1;speechSynthesis.speak(u)}document.getElementById('tts-read-sel').onclick=()=>{const t=window.getSelection().toString();if(!t)return alert('Please highlight some text first!');speak(t)};document.getElementById('tts-read-all').onclick=()=>{const t=document.body.innerText;speak(t)};document.getElementById('tts-stop').onclick=()=>speechSynthesis.cancel();document.getElementById('tts-rate').oninput=(e)=>{document.getElementById('tts-rate-val').textContent=e.target.value};window.ttsReader={show:()=>d.style.display='block',close:()=>d.style.display='none'}})();