:root{--bg:#eef2f7;--panel:#fff;--panel2:#f7f9fc;--text:#17202b;--muted:#697687;--line:#d7dee8;--accent:#2563eb;--accent2:#edf4ff;--danger:#b42318;--danger2:#fff2f0;--good:#087443;--shadow:0 16px 45px rgba(15,23,42,.10)}
@media(prefers-color-scheme:dark){:root{--bg:#0d1117;--panel:#151b23;--panel2:#10161f;--text:#edf2f7;--muted:#9aa7b5;--line:#303947;--accent:#73a6ff;--accent2:#18263d;--danger:#ff9a92;--danger2:#2a1719;--good:#63d5a0;--shadow:0 18px 52px rgba(0,0,0,.35)}}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select,textarea{font:inherit}button{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:11px;padding:9px 12px;cursor:pointer}button:hover:not(:disabled){background:var(--panel2)}button:disabled{opacity:.55;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.danger{background:var(--danger2);color:var(--danger)}
.app{width:min(1180px,96vw);margin:0 auto;padding:20px 0 30px}.top{display:flex;align-items:flex-start;gap:10px;flex-wrap:wrap;margin-bottom:14px}.brand{margin-right:auto}.brand h1{margin:0;font-size:23px}.brand p{margin:4px 0 0;color:var(--muted);font-size:12px}.topActions{display:flex;gap:7px;flex-wrap:wrap}
.layout{display:grid;grid-template-columns:310px minmax(0,1fr);min-height:720px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--panel);box-shadow:var(--shadow)}.side{border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}.sideHead{padding:14px;border-bottom:1px solid var(--line);display:flex;gap:7px;align-items:center}.sideTitle{font-weight:900;margin-right:auto}.convList{padding:8px;overflow:auto;min-height:0;flex:1}.conv{width:100%;text-align:left;padding:11px;border:1px solid transparent;border-radius:12px;background:transparent;margin-bottom:5px}.conv:hover{background:var(--panel2)}.conv.active{background:var(--accent2);border-color:rgba(37,99,235,.22)}.convName{display:flex;gap:7px;align-items:center}.convName strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.convType{font-size:10px;padding:3px 6px;border-radius:999px;background:var(--panel2);color:var(--muted);flex:none}.convMeta{margin-top:5px;color:var(--muted);font-size:10px;display:flex;gap:5px}.convPreview{margin-top:3px;color:var(--muted);font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pending{font-size:10px;color:#9a6700}.empty{padding:24px 12px;text-align:center;color:var(--muted);font-size:12px}.newBox{padding:9px;border-top:1px solid var(--line)}
.chat{min-width:0;display:flex;flex-direction:column}.chatHead{padding:14px 16px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center}.chatHead h2{font-size:17px;margin:0}.chatHead p{margin:3px 0 0;color:var(--muted);font-size:10px}.chatHeadInfo{margin-right:auto;min-width:0}.messages{padding:14px 16px;overflow:auto;flex:1;min-height:360px;background:var(--panel2)}.msg{display:flex;gap:9px;margin:0 0 12px}.msg.mine{justify-content:flex-end}.msgBody{max-width:min(76%,720px);padding:9px 11px;border:1px solid var(--line);border-radius:13px;background:var(--panel)}.mine .msgBody{background:var(--accent2);border-color:rgba(37,99,235,.20)}.msgAuthor{font-size:10px;color:var(--muted);margin-bottom:4px}.msgTime{font-size:9px;color:var(--muted);margin-top:4px;text-align:right}.mdline{line-height:1.65;word-break:break-word}.mdline code,.inlineCode{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;padding:1px 4px;border:1px solid var(--line);border-radius:5px;background:var(--panel2)}.mdline blockquote{border-left:3px solid var(--line);padding-left:9px;margin:0}.mdline a{color:var(--accent);text-decoration:underline;overflow-wrap:anywhere}.requestCard{border:1px solid var(--line);border-radius:12px;padding:11px;background:var(--accent2)}.requestCard strong{display:block;margin-bottom:4px}.requestCard p{margin:0;color:var(--muted);font-size:11px;line-height:1.6}.requestActions{display:flex;gap:7px;flex-wrap:wrap;margin-top:9px}.systemCard{border:1px dashed var(--line);border-radius:12px;padding:9px 11px;color:var(--muted);font-size:11px;background:var(--panel)}
.composer{border-top:1px solid var(--line);padding:10px;background:var(--panel)}.toolrow{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:7px}.tool{padding:6px 9px;font-size:11px}.composeArea{display:flex;gap:8px;align-items:stretch}.composeArea textarea{flex:1;min-height:88px;max-height:260px;resize:vertical;padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--panel2);color:var(--text);line-height:1.6}.sendCol{display:flex;flex-direction:column;gap:6px;width:118px}.sendCol button{width:100%;height:100%}.shareRow{display:flex;gap:7px;flex-wrap:wrap;margin-top:7px}.shareMini{padding:7px 9px;font-size:11px}.chatUploadStatus{margin-top:7px;color:var(--muted);font-size:10px;min-height:14px}.status{margin-top:6px;color:var(--muted);font-size:10px;min-height:14px}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.36);display:grid;place-items:center;padding:18px;z-index:10}.modal[hidden]{display:none}.modalCard{width:min(600px,96vw);max-height:90vh;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:17px;box-shadow:var(--shadow)}.modalHead{display:flex;gap:10px;align-items:center}.modalHead h3{margin:0;font-size:17px;margin-right:auto}.field{display:grid;gap:6px;margin-top:12px}.field span{font-size:11px;color:var(--muted);font-weight:800}.field input,.field select{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--panel2);color:var(--text)}.field select[multiple]{min-height:180px}.modalActions{display:flex;gap:7px;justify-content:flex-end;flex-wrap:wrap;margin-top:16px}.adminBox{border-top:1px solid var(--line);padding:10px}.adminTitle{font-size:11px;color:var(--muted);font-weight:900;margin-bottom:7px}.adminSelect{width:100%;padding:8px;border:1px solid var(--line);border-radius:10px;background:var(--panel2);color:var(--text)}
.userResults{display:grid;gap:6px;margin-top:7px;max-height:210px;overflow:auto}.userResult{display:flex;gap:8px;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--panel2)}.userResultName{font-weight:800;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-right:auto}.userResult button{padding:6px 9px;font-size:11px;flex:none}.selectedUsers{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:8px;padding:8px;border:1px dashed var(--line);border-radius:10px;background:var(--panel2)}.selectedUsers[hidden]{display:none}.selectedLabel{font-size:10px;color:var(--muted);font-weight:800}.userChip{display:inline-flex;align-items:center;gap:5px;padding:5px 8px;border-radius:999px;background:var(--accent2);border:1px solid rgba(37,99,235,.18);font-size:11px;font-weight:800}.userChip button{padding:2px 6px;border-radius:999px;font-size:10px}.
@media(max-width:860px){.layout{grid-template-columns:1fr;min-height:0}.side{border-right:0;border-bottom:1px solid var(--line);max-height:330px}.chat{min-height:680px}.convList{max-height:240px}.composeArea{flex-direction:column}.sendCol{width:auto;display:block}.sendCol button{height:auto}.msgBody{max-width:90%}}