:root{--fb-bg:#f8fafc;--fb-surface:#fff;--fb-subtle:#f1f5f9;--fb-border:#e2e8f0;--fb-text:#0f172a;--fb-muted:#64748b;--fb-primary:#4f46e5;--fb-success:#059669;--fb-warning:#d97706;--fb-danger:#e11d48}
*{box-sizing:border-box}body{margin:0;font:14px/1.45 Inter,ui-sans-serif,system-ui;color:var(--fb-text);background:var(--fb-bg)}button,a,input,textarea{font:inherit}button,.primary{border:1px solid var(--fb-border);background:#fff;border-radius:8px;padding:8px 10px;cursor:pointer;text-decoration:none;color:var(--fb-text)}button:hover{border-color:#cbd5e1}.primary{background:var(--fb-primary);border-color:var(--fb-primary);color:#fff}.app-shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#fff;padding:16px;border-right:1px solid #111827}.brand{display:flex;gap:10px;align-items:center;margin-bottom:20px}.brand img{width:36px;height:36px;border-radius:9px}.brand span{display:block;color:#94a3b8;font-size:12px}nav{display:grid;gap:6px}nav button{color:#cbd5e1;background:transparent;border:0;text-align:left;padding:10px 12px}nav button.active,nav button:hover{background:#1e293b;color:#fff}.workspace{min-width:0}.topbar{height:72px;display:flex;justify-content:space-between;align-items:center;padding:12px 20px;border-bottom:1px solid var(--fb-border);background:var(--fb-surface)}h1{font-size:20px;margin:0}.topbar p{margin:2px 0 0;color:var(--fb-muted)}.top-actions{display:flex;gap:10px;align-items:center}.content-grid{display:grid;grid-template-columns:320px minmax(360px,1fr) 340px;gap:12px;padding:12px;height:calc(100vh - 72px)}.panel{background:var(--fb-surface);border:1px solid var(--fb-border);border-radius:8px;min-height:0;overflow:hidden}.panel-head{display:flex;justify-content:space-between;gap:8px;padding:12px;border-bottom:1px solid var(--fb-border)}input,textarea{width:100%;border:1px solid var(--fb-border);border-radius:8px;padding:8px;background:#fff}.segments,.tabs{display:flex;gap:6px;padding:8px;border-bottom:1px solid var(--fb-border)}.segments button,.tabs button{flex:1;padding:7px}.segments .active,.tabs .active{background:#eef2ff;color:#3730a3}.list,.messages,#sideContent{overflow:auto}.list{height:calc(100% - 98px)}.thread{display:grid;gap:4px;padding:12px;border-bottom:1px solid var(--fb-border);cursor:pointer}.thread.active,.thread:hover{background:#f8fafc}.thread-top{display:flex;justify-content:space-between;gap:8px}.muted{color:var(--fb-muted);font-size:12px}.badge{display:inline-flex;align-items:center;gap:4px;border-radius:999px;padding:2px 7px;font-size:12px;background:var(--fb-subtle);color:#334155}.badge.open{background:#dcfce7;color:#166534}.badge.closing,.badge.human_agent{background:#fef3c7;color:#92400e}.badge.closed{background:#ffe4e6;color:#9f1239}.chat-head{height:72px;padding:12px;border-bottom:1px solid var(--fb-border);display:flex;justify-content:space-between;align-items:center}.messages{height:calc(100% - 218px);padding:14px;background:#f8fafc}.bubble{max-width:78%;padding:10px 12px;border:1px solid var(--fb-border);border-radius:8px;margin:0 0 10px;background:#fff}.bubble.out{margin-left:auto;background:#eef2ff;border-color:#c7d2fe}.composer{height:146px;border-top:1px solid var(--fb-border);padding:10px;display:grid;gap:8px}.composer-actions{display:flex;justify-content:flex-end;gap:8px}.status-chip{font-size:12px}.side-card{padding:12px;border-bottom:1px solid var(--fb-border)}.metric{display:flex;justify-content:space-between;margin:6px 0}.login-gate{max-width:420px;margin:10vh auto;text-align:center;background:#fff;border:1px solid var(--fb-border);border-radius:8px;padding:24px}.login-gate img{max-width:170px}.hidden{display:none!important}.toast{position:fixed;right:16px;bottom:16px;background:#0f172a;color:#fff;padding:12px 14px;border-radius:8px}
@media(max-width:900px){.app-shell{display:block}.sidebar{position:sticky;top:0;z-index:5;padding:10px}.brand{margin:0}.sidebar nav{display:flex;overflow:auto}.content-grid{grid-template-columns:1fr;height:auto}.thread-panel,.chat-panel,.side-panel{min-height:420px}.topbar{height:auto;align-items:flex-start;gap:12px}.messages{height:360px}}
.login-form{display:grid;gap:10px;margin-top:14px}.form-error{color:var(--fb-danger);font-size:13px;margin-top:10px}