:root{--page: #f4f3ef;--panel: #ffffff;--ink: #1f1d1a;--ink-soft: #6b6660;--line: #e2ded4;--line-strong: #cfc9bd;--accent: #b4530a;--accent-soft: #fdf1e6;--agent-bubble: #ffffff;--customer-bubble: #b4530a;--shadow: 0 1px 2px rgba(31, 29, 26, .06), 0 8px 24px rgba(31, 29, 26, .06);--radius: 12px}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{background:var(--page);color:var(--ink);font:14px/1.55 -apple-system,BlinkMacSystemFont,Segoe UI,Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}button{font:inherit;cursor:pointer}input,textarea{font:inherit;color:inherit}.app{display:flex;flex-direction:column;height:100%}.topbar{display:flex;align-items:center;gap:12px;padding:0 18px;height:54px;flex:none;border-bottom:1px solid var(--line);background:var(--panel)}.brand{display:flex;align-items:baseline;gap:10px;min-width:0}.brand b{font-size:15px;font-weight:650;letter-spacing:-.01em}.brand span{color:var(--ink-soft);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar .spacer{flex:1}.status{display:flex;align-items:center;gap:7px;color:var(--ink-soft);font-size:12.5px}.dot{width:8px;height:8px;border-radius:50%;background:var(--line-strong);flex:none}.dot.on{background:#2e9e5b}.dot.off{background:#c0392b}.panes{flex:1;display:flex;min-height:0;gap:14px;padding:14px}.chat{width:380px;flex:none;display:flex;flex-direction:column;min-height:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.chat-head{padding:13px 16px;border-bottom:1px solid var(--line);background:var(--accent-soft)}.chat-head b{display:block;font-size:13.5px;font-weight:650}.chat-head p{color:var(--ink-soft);font-size:12.5px;margin-top:2px}.msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.msg{display:flex;flex-direction:column;gap:4px;max-width:88%}.msg .who{font-size:11.5px;color:var(--ink-soft);letter-spacing:.01em}.msg .bubble{padding:9px 12px;border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere;border:1px solid var(--line)}.msg.agent{align-self:flex-start}.msg.agent .bubble{background:var(--agent-bubble);border-top-left-radius:4px}.msg.customer{align-self:flex-end;align-items:flex-end}.msg.customer .bubble{background:var(--customer-bubble);color:#fff;border-color:var(--customer-bubble);border-top-right-radius:4px}.msg.system{align-self:center;max-width:100%}.msg.system .bubble{background:transparent;border:0;color:var(--ink-soft);font-size:12.5px;text-align:center;padding:2px 0}.empty{margin:auto;text-align:center;color:var(--ink-soft);font-size:13px;padding:24px}.empty b{display:block;color:var(--ink);font-weight:600;margin-bottom:6px}.composer{border-top:1px solid var(--line);padding:12px;display:flex;flex-direction:column;gap:8px}.composer textarea{resize:none;min-height:64px;max-height:160px;padding:10px 12px;border:1px solid var(--line-strong);border-radius:10px;background:#fff;outline:none}.composer textarea:focus{border-color:var(--accent)}.composer .row{display:flex;align-items:center;gap:8px}.composer .hint{flex:1;color:var(--ink-soft);font-size:11.5px}.send{background:var(--accent);color:#fff;border:0;border-radius:9px;padding:8px 18px;font-weight:600;font-size:13px}.send:disabled{background:var(--line-strong);cursor:not-allowed}.namebar{padding:12px;border-top:1px solid var(--line);display:flex;gap:8px}.namebar input{flex:1;padding:9px 12px;border:1px solid var(--line-strong);border-radius:9px;outline:none;background:#fff}.namebar input:focus{border-color:var(--accent)}.preview{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.preview-head{display:flex;align-items:center;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line);flex:none}.preview-head b{font-size:13.5px;font-weight:650}.preview-head .spacer{flex:1}.preview-head .meta{color:var(--ink-soft);font-size:12.5px}.ghost{background:#fff;border:1px solid var(--line-strong);border-radius:8px;padding:6px 12px;font-size:12.5px;color:var(--ink)}.ghost:hover{border-color:var(--accent);color:var(--accent)}.frame-wrap{flex:1;min-height:0;position:relative;background:#fff}.frame-wrap iframe{width:100%;height:100%;border:0;display:block}.frame-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:13px;text-align:center;padding:32px}.flash{position:absolute;top:12px;right:14px;z-index:5;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:6px 12px;border-radius:999px;box-shadow:var(--shadow);animation:fade 4s ease forwards}@keyframes fade{0%,70%{opacity:1}to{opacity:0}}@media (max-width: 900px){.panes{flex-direction:column}.chat{width:auto;height:45%}}