:root{
  --bg:#f6f7f9;--panel:#fff;--line:#e5e7eb;--line2:#eef0f3;--text:#111827;--muted:#6b7280;--soft:#9ca3af;
  --brand:#4f46e5;--brand-50:#eef2ff;--brand-600:#4338ca;
  --ok:#059669;--ok-50:#ecfdf5;--bad:#dc2626;--bad-50:#fef2f2;--warn:#d97706;--warn-50:#fffbeb;
  --radius:12px;--shadow:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:14px/1.5 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.app{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
/* sidebar */
.side{background:var(--panel);border-right:1px solid var(--line);padding:20px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;padding:0 8px 20px}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:15px}
.nav{display:flex;flex-direction:column;gap:2px}
.nav button{all:unset;cursor:pointer;display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;color:#374151;font-weight:500}
.nav button:hover{background:var(--line2)}
.nav button.active{background:var(--brand-50);color:var(--brand-600)}
.nav svg{width:18px;height:18px;flex:none}
.side-foot{margin-top:auto;font-size:12px;color:var(--soft);padding:0 8px}
.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--soft);margin-right:6px}
.status-dot.on{background:var(--ok)}
/* main */
main{padding:28px 36px 60px;max-width:1280px;width:100%}
.page{display:none}.page.active{display:block;animation:fade .15s ease}
@keyframes fade{from{opacity:0;transform:translateY(3px)}to{opacity:1}}
.head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.head h1{font-size:22px;margin:0 0 2px;letter-spacing:-.01em}
.head p{margin:0;color:var(--muted)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.card h3{margin:0 0 14px;font-size:15px}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.card-head h3{margin:0}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{display:grid;grid-template-columns:380px 1fr;gap:16px;align-items:start}
.stack>*+*{margin-top:16px}
@media (max-width:1100px){.split{grid-template-columns:1fr}.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:760px){.app{grid-template-columns:1fr}.side{position:static;height:auto}.g2,.g3,.g4{grid-template-columns:1fr}main{padding:20px}}
/* forms */
label{display:block;font-size:12.5px;font-weight:600;color:#374151;margin:0 0 6px}
.field{margin-bottom:14px}
.row{display:flex;gap:10px}.row>*{flex:1}
input,select,textarea{width:100%;font:inherit;color:inherit;background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 11px;outline:none;transition:border .12s,box-shadow .12s}
textarea{resize:vertical;min-height:84px;font-family:var(--mono);font-size:12.5px}
textarea.prose{font-family:inherit;font-size:14px}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-50)}
.hint{font-size:12px;color:var(--muted);margin-top:5px}
.check{display:flex;gap:9px;align-items:flex-start;font-size:13px;color:#374151;font-weight:400}
.check input{width:auto;margin-top:3px}
.btn{all:unset;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:8px 14px;border-radius:8px;font-weight:600;font-size:13.5px;border:1px solid var(--line);background:#fff;color:#374151;transition:background .12s;white-space:nowrap}
.btn:hover{background:var(--line2)}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}.btn.primary:hover{background:var(--brand-600)}
.btn.danger{color:var(--bad);border-color:#fecaca}.btn.danger:hover{background:var(--bad-50)}
.btn.sm{padding:5px 10px;font-size:12.5px}
.btn.block{display:flex;width:100%;box-sizing:border-box}
.btn[disabled]{opacity:.5;pointer-events:none}
.btn svg{width:16px;height:16px}
.tabs{display:inline-flex;background:var(--line2);border-radius:9px;padding:3px;gap:2px;margin-bottom:16px}
.tabs button{all:unset;cursor:pointer;padding:6px 12px;border-radius:7px;font-weight:500;font-size:13px;color:var(--muted)}
.tabs button.active{background:#fff;color:var(--text);box-shadow:var(--shadow)}
/* stats */
.stat{padding:16px 18px}
.stat .k{font-size:12px;color:var(--muted);font-weight:500}
.stat .v{font-size:24px;font-weight:700;letter-spacing:-.02em;margin-top:2px}
.stat .s{font-size:12px;color:var(--soft)}
.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:11.5px;font-weight:600;background:var(--line2);color:#374151}
.badge.ok{background:var(--ok-50);color:var(--ok)}.badge.bad{background:var(--bad-50);color:var(--bad)}.badge.warn{background:var(--warn-50);color:var(--warn)}.badge.brand{background:var(--brand-50);color:var(--brand-600)}
/* tables */
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;font-weight:600;color:var(--muted);font-size:12px;padding:8px 10px;border-bottom:1px solid var(--line)}
td{padding:10px;border-bottom:1px solid var(--line2);vertical-align:top}
tr:last-child td{border-bottom:none}
.mono{font-family:var(--mono);font-size:12.5px}
.muted{color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:36px 10px}
.empty b{display:block;color:var(--text);margin-bottom:4px}
.chart-box{position:relative;height:260px}
.progress{height:6px;background:var(--line2);border-radius:99px;overflow:hidden}
.progress>div{height:100%;background:var(--brand);width:0;transition:width .4s linear}
pre.code{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;overflow:auto;max-height:360px;font:12px/1.55 var(--mono);margin:0;white-space:pre-wrap;word-break:break-word}
/* kv editor */
.kv{display:grid;grid-template-columns:1fr 1fr 30px;gap:6px;margin-bottom:6px}
.kv button{all:unset;cursor:pointer;display:grid;place-items:center;color:var(--soft);border-radius:6px}.kv button:hover{background:var(--line2);color:var(--bad)}
/* AI chat */
.chat{display:flex;flex-direction:column;height:calc(100vh - 210px);min-height:460px;padding:0}
.chat-log{flex:1;overflow:auto;padding:20px}
.msg{max-width:82%;margin-bottom:14px;padding:11px 14px;border-radius:12px;line-height:1.55}
.msg.user{margin-left:auto;background:var(--brand);color:#fff;border-bottom-right-radius:4px}
.msg.bot{background:var(--line2);border-bottom-left-radius:4px}
.msg.bot h1,.msg.bot h2,.msg.bot h3{font-size:14.5px;margin:12px 0 6px}
.msg.bot p{margin:6px 0}.msg.bot ul,.msg.bot ol{margin:6px 0;padding-left:20px}
.msg.bot code{font-family:var(--mono);font-size:12px;background:#fff;padding:1px 5px;border-radius:4px}
.msg.bot pre{background:#0f172a;color:#e2e8f0;padding:10px;border-radius:8px;overflow:auto;font-size:12px}
.msg.bot pre code{background:none;color:inherit;padding:0}
.msg.bot table{background:#fff;border-radius:6px;margin:8px 0}
.msg-actions{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.chat-in{border-top:1px solid var(--line);padding:12px;display:flex;gap:8px}
.chat-in textarea{min-height:44px;height:44px;font-family:inherit;font-size:14px}
.chips{display:flex;flex-wrap:wrap;gap:6px;padding:0 20px 12px}
.chip{all:unset;cursor:pointer;font-size:12.5px;padding:5px 11px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#374151}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.typing span{display:inline-block;width:6px;height:6px;margin-right:3px;border-radius:50%;background:var(--soft);animation:b 1s infinite}
.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}
@keyframes b{0%,80%,100%{opacity:.3}40%{opacity:1}}
/* modal + toast */
.modal-bg{position:fixed;inset:0;background:rgba(17,24,39,.4);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:14px;width:100%;max-width:620px;max-height:90vh;overflow:auto;padding:24px;box-shadow:0 20px 50px rgba(0,0,0,.2)}
.modal h2{margin:0 0 4px;font-size:18px}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}
.toasts{position:fixed;bottom:20px;right:20px;pointer-events:none;display:flex;flex-direction:column;gap:8px;z-index:60}
.toast{background:#111827;color:#fff;padding:11px 15px;border-radius:9px;font-size:13px;box-shadow:0 8px 24px rgba(0,0,0,.2);max-width:380px;animation:fade .2s}
.toast.bad{background:var(--bad)}.toast.ok{background:var(--ok)}
.notice{padding:11px 13px;border-radius:9px;background:var(--warn-50);color:#92400e;font-size:13px;border:1px solid #fde68a}
.notice.info{background:var(--brand-50);color:var(--brand-600);border-color:#c7d2fe}
.list-item{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:11px 0;border-bottom:1px solid var(--line2)}
.list-item:last-child{border-bottom:none}
.assert{display:grid;grid-template-columns:130px 110px 1fr 30px;gap:6px;margin-bottom:6px}
.pill-pass{color:var(--ok);font-weight:600}.pill-fail{color:var(--bad);font-weight:600}
.spin{width:14px;height:14px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:sp .7s linear infinite;display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}