:root{font-family:system-ui,sans-serif;color:#253246;background:#f1f5f9}*{box-sizing:border-box}body{margin:0;padding:20px;max-width:1200px;margin-inline:auto}header{display:flex;gap:20px;align-items:center;flex-wrap:wrap}h1{font-size:24px}main{display:flex;gap:20px}aside{width:260px;flex-shrink:0}.chat{flex:1;min-width:0;background:white;border-radius:12px;padding:16px}#messages{height:55vh;overflow:auto;padding:10px}.message{border-bottom:1px solid #e2e8f0;padding:14px 4px;white-space:pre-wrap;overflow-wrap:anywhere}.message small{color:#64748b;display:block}.message img{display:block;max-width:100%;max-height:260px;margin-top:8px}textarea,input,button{font:inherit}textarea{width:100%;height:85px;border:1px solid #cbd5e1;border-radius:8px;padding:10px}button{padding:9px 16px;border:0;border-radius:7px;background:#2563eb;color:white;cursor:pointer;margin:5px}button:disabled{opacity:.5;cursor:default}label{display:block;font-size:14px;margin:8px 0}input{max-width:100%;padding:8px}#error{color:#b91c1c}#conversations button{display:block;width:100%;text-align:left;margin:5px 0}[hidden]{display:none!important}@media(max-width:700px){main{flex-direction:column}aside{width:100%}body{padding:12px}}