:root{--bg: #ffffff;--fg: #1b2533;--muted: #7c98b6;--border: #cbd6e2;--accent: #0091ae;--accent-fg: #ffffff;--user-bg: #eaf0f6;--tool-bg: #fff7e6;--tool-border: #f5c26b;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--fg)}*{box-sizing:border-box}body{margin:0;background:var(--bg)}.app{display:flex;flex-direction:column;height:100vh}.header{padding:12px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px;font-weight:600;flex:0 0 auto}.header .ctx{color:var(--muted);font-weight:400;font-size:13px}.workspace{flex:1;min-height:0;display:grid;grid-template-columns:42% 58%}.pane{min-height:0;display:flex;flex-direction:column;overflow:hidden}.pane.context{border-right:1px solid var(--border);overflow-y:auto;padding:16px;gap:10px;background:#f9fbfd}.pane.chat{min-height:0}.ctx-head{font-weight:600;font-size:13px;color:var(--muted)}.ctx-customer{padding:10px 12px;background:#fff;border:1px solid var(--border);border-radius:8px}.ctx-sub{color:var(--muted);font-size:12px;margin-top:4px}.ctx-conv-label{font-weight:600;font-size:12px;color:var(--muted);margin-top:6px;text-transform:uppercase;letter-spacing:.04em}.ctx-muted{color:var(--muted);font-size:13px}.ctx-msg{padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:#fff}.ctx-msg.customer{background:#fff}.ctx-msg.agent{background:var(--user-bg)}.ctx-from{font-size:11px;font-weight:600;color:var(--muted);margin-bottom:2px}.ctx-text{white-space:pre-wrap;font-size:13px;line-height:1.4;-webkit-user-select:text;user-select:text}@media(max-width:760px){.workspace{grid-template-columns:1fr;grid-template-rows:40% 60%}.pane.context{border-right:none;border-bottom:1px solid var(--border)}}.messages{flex:1;min-height:0;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.msg{max-width:85%;padding:10px 12px;border-radius:10px;white-space:pre-wrap;line-height:1.45}.msg.user{align-self:flex-end;background:var(--user-bg)}.msg.assistant{align-self:flex-start;background:#f5f8fa}.tool{align-self:flex-start;max-width:85%;background:var(--tool-bg);border:1px solid var(--tool-border);border-radius:10px;padding:12px}.tool h4{margin:0 0 6px;font-size:13px}.tool pre{margin:8px 0;font-size:12px;background:#fff;padding:8px;border-radius:6px;overflow-x:auto}.tool .row{display:flex;gap:8px;margin-top:8px}.tool .done{color:var(--muted);font-size:12px;margin-top:8px}.composer{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border)}.composer input{flex:1;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px}button{padding:8px 14px;border:none;border-radius:8px;font-size:14px;cursor:pointer;background:var(--accent);color:var(--accent-fg)}button.ghost{background:#fff;color:var(--fg);border:1px solid var(--border)}button.danger{background:#fff;color:#c0392b;border:1px solid #e8b9b3}button:disabled{opacity:.5;cursor:default}.gate{padding:24px;color:var(--muted)}.err{color:#c0392b}