#uac-widget{position:fixed;right:20px;bottom:20px;z-index:99999;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}#uac-toggle{min-width:58px;height:58px;padding:0 16px;border:0;border-radius:999px;background:#155eef;color:#fff;box-shadow:0 8px 24px rgba(21,94,239,.28);cursor:pointer;font-weight:700}#uac-panel{position:absolute;right:0;bottom:72px;display:flex;flex-direction:column;width:min(360px, calc(100vw - 32px));height:min(560px, calc(100vh - 110px));overflow:hidden;border:1px solid #d9e2f2;border-radius:14px;background:#fff;box-shadow:0 18px 50px rgba(18,35,64,.2)}.uac-header{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;background:#155eef;color:#fff}#uac-close{border:0;background:0 0;color:#fff;font-size:24px;cursor:pointer}#uac-messages{flex:1;overflow-y:auto;padding:16px;background:#f6f8fc}.uac-message{max-width:86%;margin:0 0 12px;padding:10px 12px;border-radius:12px;white-space:pre-wrap;line-height:1.45;font-size:14px}.uac-bot{border:1px solid #e0e7f2;background:#fff;color:#172033}.uac-user{margin-left:auto;background:#155eef;color:#fff}.uac-input-row{display:flex;gap:8px;padding:12px;border-top:1px solid #e0e7f2;background:#fff}#uac-input{min-width:0;flex:1;padding:10px;border:1px solid #b9c6db;border-radius:8px}#uac-send{padding:0 14px;border:0;border-radius:8px;background:#155eef;color:#fff;cursor:pointer}#uac-send:disabled{opacity:.65;cursor:wait}@media (max-width:480px){#uac-widget{right:16px;bottom:16px}#uac-panel{bottom:70px;height:min(560px, calc(100vh - 96px))}}