#wca-chat{position:fixed;right:20px;bottom:20px;width:340px;background:#fff;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.12);font-family:system-ui,Segoe UI,Arial,sans-serif;overflow:hidden;z-index:99999}
#wca-chat-root[style*="position: relative"] #wca-chat{position:relative!important;right:auto!important;bottom:auto!important;width:100%!important;height:100%!important;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.1);display:flex;flex-direction:column}
#wca-chat-root[style*="position: relative"] .wca-body{flex:1;min-height:200px}
#wca-launcher{position:fixed;right:20px;bottom:20px;width:56px;height:56px;border:0;border-radius:50%;background:#111827;color:#fff;font-size:24px;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.15);z-index:99998}
#wca-chat .wca-header{background:#111827;color:#fff;padding:10px 12px;font-weight:600;display:flex;justify-content:space-between;align-items:center}
#wca-chat .wca-close{background:none;border:none;color:#fff;font-size:18px;cursor:pointer;padding:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center}
#wca-chat .wca-body{max-height:360px;overflow:auto;padding:12px}
#wca-chat .msg{margin:8px 0;padding:10px;border-radius:10px;line-height:1.45}
#wca-chat .msg.user{background:#111827;color:#fff;margin-left:40px}
#wca-chat .msg.bot{background:#f3f4f6;margin-right:40px}
#wca-chat .cites{font-size:12px;margin-top:6px}
#wca-chat .cites a{text-decoration:underline}
#wca-chat .wca-input{display:flex;gap:8px;border-top:1px solid #e5e7eb;padding:8px}
#wca-chat .wca-input input{flex:1;border:1px solid #e5e7eb;border-radius:8px;padding:8px}
#wca-chat .wca-input button{border:0;background:#111827;color:#fff;border-radius:8px;padding:8px 12px;cursor:pointer}