:root{
  --bg:#f6f7fb; --panel:#ffffff; --ink:#0f172a; --muted:#64748b; --line:#e5e7ef;
  --brand:#4f46e5; --brand-ink:#ffffff; --brand-soft:#eef2ff; --ok:#059669; --warn:#d97706; --bad:#dc2626;
  --radius:12px; --shadow:0 1px 2px rgba(15,23,42,.06),0 4px 16px rgba(15,23,42,.05);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand);text-decoration:none}
.topbar{display:flex;align-items:center;gap:24px;height:56px;padding:0 24px;background:#0b1020;color:#e2e8f0}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:.2px;color:#fff}
.logo .mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#6366f1,#22d3ee);display:grid;place-items:center;font-size:12px;font-weight:800;color:#fff}
.nav{display:flex;gap:4px}
.nav a{color:#cbd5e1;padding:6px 12px;border-radius:8px;font-weight:500}
.nav a.active,.nav a:hover{background:#1e2640;color:#fff}
.topbar .spacer{flex:1}
.pill{font-size:12px;padding:3px 10px;border-radius:999px;background:#1e2640;color:#cbd5e1}
.pill.ok{background:#064e3b;color:#a7f3d0}.pill.bad{background:#7f1d1d;color:#fecaca}
.layout{display:grid;grid-template-columns:320px 1fr;height:calc(100% - 56px)}
.side{background:var(--panel);border-right:1px solid var(--line);padding:20px;overflow:auto}
.side h3{margin:18px 0 8px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.side h3:first-child{margin-top:0}
label{display:block;font-size:12px;font-weight:600;color:#334155;margin:12px 0 6px}
input[type=text],input[type=password],input[type=number],select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fff;color:var(--ink);outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
textarea{resize:vertical;min-height:84px}
.row{display:flex;gap:10px;align-items:center}
.row>*{flex:1}
.check{display:flex;align-items:center;gap:8px;font-size:13px;margin:10px 0;color:#334155}
.check input{width:16px;height:16px;accent-color:var(--brand)}
input[type=range]{width:100%;accent-color:var(--brand)}
.hint{font-size:12px;color:var(--muted);margin-top:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:9px;border:1px solid var(--line);background:#fff;color:var(--ink);font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:#f8fafc}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.btn.primary:hover{filter:brightness(1.07)}
.btn.small{padding:5px 10px;font-size:12px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.main{display:flex;flex-direction:column;min-width:0}
.chat{flex:1;overflow:auto;padding:28px 0}
.chat-inner{max-width:860px;margin:0 auto;padding:0 24px}
.empty{text-align:center;color:var(--muted);margin-top:8vh}
.empty h1{color:var(--ink);font-size:26px;margin:0 0 8px}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:20px}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;cursor:pointer;font-size:13px;color:#334155}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.msg{display:flex;gap:14px;margin:0 0 22px}
.avatar{flex:0 0 32px;height:32px;border-radius:9px;display:grid;place-items:center;font-size:12px;font-weight:700}
.msg.user .avatar{background:#e2e8f0;color:#334155}
.msg.assistant .avatar{background:linear-gradient(135deg,#6366f1,#22d3ee);color:#fff}
.bubble{flex:1;min-width:0}
.bubble .who{font-size:12px;font-weight:700;color:#334155;margin-bottom:4px}
.content{white-space:normal;word-wrap:break-word}
.content p{margin:0 0 10px}
.content pre{background:#0b1020;color:#e2e8f0;padding:12px 14px;border-radius:10px;overflow:auto;font:12.5px/1.5 var(--mono)}
.content code{font:12.5px var(--mono);background:#eef2ff;color:#3730a3;padding:1px 5px;border-radius:5px}
.content pre code{background:none;color:inherit;padding:0}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.tag{font-size:11.5px;padding:2px 8px;border-radius:6px;background:#f1f5f9;color:#475569;border:1px solid var(--line)}
.tag.brand{background:var(--brand-soft);color:#3730a3;border-color:#e0e7ff}
.tag.ok{background:#ecfdf5;color:#065f46;border-color:#d1fae5}
.tag.warn{background:#fffbeb;color:#92400e;border-color:#fde68a}
details.steps{margin-top:8px;font-size:12.5px;color:#475569}
details.steps summary{cursor:pointer;color:var(--brand);font-weight:600}
details.steps pre{background:#f8fafc;border:1px solid var(--line);padding:10px;border-radius:8px;overflow:auto;font:12px/1.45 var(--mono);color:#334155}
.composer{border-top:1px solid var(--line);background:var(--panel);padding:16px 24px}
.composer-inner{max-width:860px;margin:0 auto;display:flex;gap:10px;align-items:flex-end}
.composer textarea{min-height:52px;max-height:220px}
.error{color:var(--bad);background:#fef2f2;border:1px solid #fecaca;padding:10px 12px;border-radius:9px;margin:0 0 16px}
/* dashboard */
.page{max-width:1240px;margin:0 auto;padding:24px}
.head{display:flex;align-items:flex-end;gap:16px;margin-bottom:18px}
.head h1{margin:0;font-size:22px}
.head .sub{color:var(--muted)}
.head .spacer{flex:1}
.keybar{display:flex;gap:8px;min-width:420px}
.grid{display:grid;gap:16px}
.kpis{grid-template-columns:repeat(6,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.card h2{font-size:13px;margin:0 0 12px;color:#334155;display:flex;align-items:center;gap:8px}
.kpi .label{font-size:12px;color:var(--muted);font-weight:600}
.kpi .value{font-size:22px;font-weight:700;margin-top:4px;letter-spacing:-.3px}
.kpi .foot{font-size:12px;color:var(--muted);margin-top:2px}
.bar{height:6px;background:#eef2f7;border-radius:6px;overflow:hidden;margin-top:10px}
.bar>div{height:100%;background:var(--brand);width:0}
.two{grid-template-columns:1.4fr 1fr}
.three{grid-template-columns:1fr 1fr 1fr}
table{width:100%;border-collapse:collapse;font-size:12.5px}
th{text-align:left;color:var(--muted);font-weight:600;border-bottom:1px solid var(--line);padding:7px 8px;white-space:nowrap}
td{border-bottom:1px solid #f1f3f8;padding:7px 8px;vertical-align:top}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.mono{font-family:var(--mono);font-size:12px}
.badge{display:inline-block;font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;border:1px solid transparent}
.b-wired{background:#ecfdf5;color:#065f46;border-color:#a7f3d0}
.b-eval{background:#eff6ff;color:#1e40af;border-color:#bfdbfe}
.b-callable{background:#f8fafc;color:#334155;border-color:#e2e8f0}
.b-demo{background:#faf5ff;color:#6b21a8;border-color:#e9d5ff}
.b-blocked{background:#fff7ed;color:#9a3412;border-color:#fed7aa}
.b-plan_only{background:#fef2f2;color:#991b1b;border-color:#fecaca}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;background:#cbd5e1}
.dot.ok{background:var(--ok)}.dot.bad{background:var(--bad)}.dot.idle{background:#cbd5e1}
.chart{display:flex;align-items:flex-end;gap:4px;height:120px;padding-top:8px}
.chart .col{flex:1;background:var(--brand-soft);border-radius:4px 4px 0 0;position:relative;min-height:2px}
.chart .col>span{position:absolute;left:0;right:0;bottom:0;background:var(--brand);border-radius:4px 4px 0 0}
.newkey{margin-top:10px;padding:10px;border-radius:8px;background:#fffbeb;border:1px solid #fde68a;font-size:12.5px;word-break:break-all}
.hidden{display:none}
.landing{max-width:880px;margin:8vh auto;padding:0 24px}
.landing h1{font-size:34px;margin:0 0 10px;letter-spacing:-.5px}
.landing p.lead{font-size:16px;color:#475569;max-width:640px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.cards .card h3{margin:0 0 6px;font-size:15px}
.cards .card p{margin:0;color:#64748b}
@media (max-width:900px){.layout{grid-template-columns:1fr}.side{display:none}.kpis{grid-template-columns:repeat(2,1fr)}.two,.three,.cards{grid-template-columns:1fr}}
.scroll{overflow:auto}