.lt-chat{position:fixed;right:22px;bottom:22px;z-index:9999;font-family:Arial,sans-serif}
.lt-chat__toggle{border:0;border-radius:999px;background:#0b1220;color:#fff;padding:14px 20px;font-weight:800;box-shadow:0 10px 30px rgba(11,18,32,.25);cursor:pointer}
.lt-chat__panel{position:absolute;right:0;bottom:58px;width:min(380px,calc(100vw - 28px));height:520px;max-height:72vh;background:#fff;border:1px solid #dfe5ee;border-radius:16px;box-shadow:0 18px 55px rgba(11,18,32,.28);overflow:hidden}
.lt-chat__panel header{height:58px;padding:0 16px;background:#0b1220;color:#fff;display:flex;align-items:center;justify-content:space-between}
.lt-chat__close{border:0;background:transparent;color:#fff;font-size:25px;cursor:pointer}
.lt-chat__messages{height:calc(100% - 132px);padding:14px;overflow:auto;background:#f6f8fc}
.lt-chat__messages p{max-width:88%;padding:10px 12px;border-radius:12px;line-height:1.45;font-size:14px;white-space:pre-wrap}
.lt-chat__messages .assistant{background:#fff;border:1px solid #e2e7ef}
.lt-chat__messages .user{margin-left:auto;background:#2563eb;color:#fff}
.lt-chat__messages .error{background:#fff0f0;color:#9f1d1d}
.lt-chat__actions{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px}
.lt-chat__action{display:inline-flex;align-items:center;min-height:36px;padding:8px 12px;border-radius:9px;background:#e8f0ff;color:#1746a2;text-decoration:none;font-size:13px;font-weight:800;border:1px solid #bfd2ff}
.lt-chat__action:hover,.lt-chat__action:focus{background:#dbe8ff;color:#0b347f}
.lt-chat__panel form{height:74px;border-top:1px solid #e2e7ef;padding:10px;display:flex;gap:8px}
.lt-chat__panel textarea{flex:1;resize:none;border:1px solid #cbd5e1;border-radius:9px;padding:9px}
.lt-chat__panel form button{border:0;border-radius:9px;background:#2563eb;color:#fff;font-weight:800;padding:0 14px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:600px){.lt-chat{right:14px;bottom:14px}
.lt-chat__panel{position:fixed;inset:12px;width:auto;height:auto;max-height:none;bottom:74px}
}