.chat-panel{position:fixed;right:24px;bottom:82px;z-index:95;width:min(360px,calc(100vw - 32px));max-height:calc(100vh - 100px);max-height:calc(100dvh - 100px);display:flex;flex-direction:column;padding:18px;background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 35px rgba(20,30,40,.12)}
.chat-panel header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0}
.chat-panel h3{margin:0;font-size:16px}
.chat-messages{overflow-y:auto;min-height:60px;max-height:280px;margin:14px 0;overscroll-behavior:contain}
.chat-message{margin:0 0 10px;padding:10px 12px;border-radius:10px;background:var(--bg);font-size:14px;white-space:pre-wrap;overflow-wrap:anywhere}
.chat-message-user{background:var(--soft)}
.chat-message-error{border-left:3px solid var(--accent)}
.chat-panel form{display:flex;gap:8px;align-items:flex-end;flex-shrink:0}
.chat-panel textarea{font:inherit;resize:none;min-width:0;flex:1;padding:10px;font-size:14px}
.chat-panel .btn{padding:10px 12px;font-size:14px}
.chat-panel button:disabled{opacity:.6;cursor:wait}
.chat-status{min-height:20px;margin:0 0 6px}
.chat-support{margin-top:10px;color:var(--accent);font-size:13px}
@media(max-width:400px){.chat-panel{right:16px}}