:root{--bg: #f6f7f9;--card: #fff;--line: #e3e6ea;--text: #1f2329;--muted: #6b7280;--accent: #2563eb;--error: #dc2626}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.app{max-width:760px;margin:0 auto;padding:16px}header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:16px}header h1{font-size:20px;margin:0}.center{min-height:100vh;display:grid;place-items:center;padding:16px}.row{display:flex;align-items:center;gap:10px}.row.between{justify-content:space-between}.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;display:flex;flex-direction:column;gap:12px}.card.narrow{width:320px}label{display:flex;flex-direction:column;gap:6px;font-size:14px}.check{flex-direction:row;align-items:center;gap:8px}input,textarea{font:inherit;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:#fff}button{font:inherit;cursor:pointer;border:1px solid var(--accent);background:var(--accent);color:#fff;padding:8px 14px;border-radius:8px}button:disabled{opacity:.6;cursor:default}header button,.row button[type=button]{background:#fff;color:var(--text);border-color:var(--line)}.muted{color:var(--muted);font-size:14px}.error{color:var(--error);font-size:14px}.req{color:var(--error);font-size:12px}.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.list li{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:10px 12px;cursor:pointer}.list li:hover{border-color:var(--accent)}.list .title{font-weight:500}.status{font-size:11px;font-weight:600;letter-spacing:.02em;padding:2px 8px;border-radius:999px;background:#eef2ff;color:#3730a3;white-space:nowrap}.s-RESOLVED,.s-CLOSED{background:#dcfce7;color:#166534}.s-REJECTED,.s-BLOCKED{background:#fee2e2;color:#991b1b}.s-NEEDS_INFO,.s-AWAITING_OPERATOR,.s-AWAITING_TESTER_RETEST{background:#fef9c3;color:#854d0e}.thread{display:flex;flex-direction:column;gap:8px;margin-top:6px}.msg{display:flex;flex-direction:column;gap:2px;padding:8px 10px;border-radius:8px}.msg .who{font-size:11px;text-transform:uppercase;color:var(--muted)}.msg.tester{background:#eff6ff;align-self:flex-end;max-width:85%}.msg.agent{background:#f3f4f6;align-self:flex-start;max-width:85%}.msg.operator{background:#fdf4ff;align-self:flex-start;max-width:85%}.retest{border-top:1px solid var(--line);padding-top:12px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}.reply{display:flex;gap:8px;align-items:flex-end}.reply textarea{flex:1}