:root{
  --bg:#f6f7fb; --panel:#fff; --line:#e6e8f0; --line2:#eef0f6; --text:#1d2233; --muted:#6b7286; --faint:#9aa1b3;
  --brand:#7c5cff; --brand-soft:#efeaff; --green:#16a34a; --green-soft:#e7f8ee; --red:#e5484d; --red-soft:#fdecec;
  --amber:#f59e0b; --wa:#25d366; --wa-bg:#efeae2; --wa-out:#d9fdd3;
  --shadow:0 1px 2px rgba(20,24,40,.06),0 4px 14px rgba(20,24,40,.06);
  --r:10px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:14px/1.45 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg)}
a{color:var(--brand);text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 12px;font-weight:500;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
button:hover{border-color:#cfd3df;background:#fafbfd}
button.primary{background:var(--brand);border-color:var(--brand);color:#fff}
button.primary:hover{background:#6a49f0}
button.green{background:var(--green);border-color:var(--green);color:#fff}
button.danger{color:var(--red)}
button.ghost{border-color:transparent;background:transparent}
button.ghost:hover{background:#f0f1f6}
button.sm{padding:4px 9px;font-size:12.5px}
button:disabled{opacity:.5;cursor:default}
input,select,textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff;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:60px}
.muted{color:var(--muted)} .faint{color:var(--faint)} .small{font-size:12px}
.badge{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:600;padding:2px 8px;border-radius:99px;background:#eef0f6;color:var(--muted)}
.badge.on{background:var(--brand);color:#fff} .badge.green{background:var(--green-soft);color:var(--green)}
.badge.red{background:var(--red-soft);color:var(--red)} .badge.amber{background:#fff4dc;color:#b45309}
.badge.purple{background:var(--brand-soft);color:var(--brand)}

/* top nav */
.topnav{height:52px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:28px;padding:0 20px;position:sticky;top:0;z-index:20}
.brand{font-weight:700;font-size:16px;color:var(--text);display:flex;align-items:center;gap:8px}
.logo{width:28px;height:28px;border-radius:8px;background:var(--wa);display:grid;place-items:center;font-size:15px}
.topnav nav{display:flex;gap:4px;overflow-x:auto}
.topnav nav a{color:var(--muted);padding:6px 12px;border-radius:8px;font-weight:500}
.topnav nav a.active,.topnav nav a:hover{background:var(--brand-soft);color:var(--brand)}
body.in-builder .topnav{display:none}

/* pages */
.page{max-width:1180px;margin:0 auto;padding:26px 20px 60px}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.page-head h1{font-size:22px;margin:0}
.page-head .actions{display:flex;gap:8px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.stat b{font-size:22px;display:block}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:var(--shadow)}
.flow-card h3{margin:0 0 6px;font-size:16px;cursor:pointer}
.flow-card .meta{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.flow-card .row{display:flex;justify-content:space-between;align-items:center;margin-top:12px;gap:6px;flex-wrap:wrap}
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line2);vertical-align:top}
th{font-size:12px;color:var(--muted);font-weight:600;background:#fafbfd}
tr.clickable{cursor:pointer} tr.clickable:hover td{background:#fafbff}
.steps{margin:0;padding:6px 0 6px 18px;font-size:12.5px;color:var(--muted)}
.form{display:grid;gap:14px;max-width:640px}
.fld{display:grid;gap:5px}
.fld>span{font-size:12px;font-weight:600;color:var(--muted)}
.fld small{color:var(--faint);font-size:11.5px}
.code{font-family:ui-monospace,Menlo,Consolas,monospace;background:#f3f4f8;padding:2px 6px;border-radius:6px;font-size:12.5px;word-break:break-all}

/* switch */
.switch{position:relative;width:38px;height:22px;flex:none;display:inline-block}
.switch input{display:none}
.switch i{position:absolute;inset:0;background:#d4d7e1;border-radius:99px;transition:.2s;cursor:pointer}
.switch i:after{content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.switch input:checked+i{background:var(--brand)}
.switch input:checked+i:after{left:19px}

/* toasts */
#toasts{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);display:grid;gap:8px;z-index:100}
.toast{background:#1d2233;color:#fff;padding:10px 16px;border-radius:10px;box-shadow:var(--shadow);font-size:13.5px;max-width:90vw}
.toast.error{background:var(--red)} .toast.ok{background:var(--green)}

/* ---------------- builder ---------------- */
.builder{position:fixed;inset:0;display:grid;grid-template-rows:56px 1fr;background:#fff}
.bhead{display:flex;align-items:center;gap:12px;padding:0 14px;border-bottom:1px solid var(--line);background:#fff;z-index:5}
.bhead .name{border:1px solid transparent;font-weight:600;font-size:15px;width:auto;min-width:120px;max-width:300px;padding:5px 8px}
.bhead .name:hover{border-color:var(--line)}
.bhead .spacer{flex:1}
.bhead .save-state{font-size:12px;color:var(--faint);min-width:70px}
.bbody{display:grid;grid-template-columns:230px 1fr 320px;min-height:0;position:relative}
.palette{border-right:1px solid var(--line);overflow:auto;padding:14px 12px;background:#fff}
.palette h4{font-size:11px;letter-spacing:.08em;color:var(--muted);margin:16px 4px 8px;text-transform:uppercase}
.pitem{display:flex;gap:10px;align-items:center;padding:9px 10px;border:1px solid var(--line);border-left:3px solid var(--c);border-radius:9px;margin-bottom:7px;cursor:grab;background:#fff;user-select:none}
.pitem:hover{box-shadow:var(--shadow)}
.pitem .ic{width:28px;height:28px;border-radius:7px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 14%,#fff);flex:none}
.pitem b{display:block;font-size:13px;font-weight:600}
.pitem small{display:block;color:var(--faint);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px}

.cw{position:relative;overflow:hidden;background-color:#fbfbfd;background-image:radial-gradient(#d7dae4 1px,transparent 1px);background-size:20px 20px;touch-action:none;cursor:grab}
.cw.panning{cursor:grabbing}
.world{position:absolute;left:0;top:0;transform-origin:0 0}
svg.edges{position:absolute;left:0;top:0;width:1px;height:1px;overflow:visible;pointer-events:none}
.edge{fill:none;stroke-width:2;opacity:.9}
.edge.sel{stroke-width:3.5;stroke:var(--red)!important}
.edge.temp{stroke:var(--brand);stroke-dasharray:6 5}
.edge-hit{fill:none;stroke:transparent;stroke-width:14;pointer-events:stroke;cursor:pointer}
.node{position:absolute;width:250px;background:#fff;border:1px solid var(--line);border-left:3px solid var(--c);border-radius:11px;box-shadow:var(--shadow);user-select:none;cursor:default}
.node.sel{outline:2px solid var(--brand);outline-offset:2px}
.node.err{border-color:var(--red);border-left-color:var(--red)}
.node.running{box-shadow:0 0 0 4px rgba(37,211,102,.35),var(--shadow)}
.node.visited{box-shadow:0 0 0 3px rgba(124,92,255,.25),var(--shadow)}
.node-head{display:flex;align-items:center;gap:8px;padding:9px 12px;font-weight:600;font-size:13px;background:color-mix(in srgb,var(--c) 8%,#fff);border-radius:10px 10px 0 0;cursor:move}
.node-head .nic{font-size:14px}
.node-head .ntype{margin-left:auto;font-size:10.5px;font-weight:500;color:var(--faint)}
.node-body{padding:9px 12px;font-size:12px;color:var(--muted);white-space:pre-wrap;max-height:76px;overflow:hidden;cursor:move;word-break:break-word}
.outs{padding:0 8px 8px;display:grid;gap:6px}
.out-row{position:relative;border:1px solid var(--line2);background:#fafbfd;border-radius:8px;padding:6px 26px 6px 10px;font-size:12px;color:#5b4bc4;font-weight:500;min-height:30px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.out-row.plain{background:transparent;border-color:transparent;color:var(--faint);text-align:right;font-weight:400}
.out-row.t-true{color:var(--green)} .out-row.t-false,.out-row.t-error{color:var(--red)}
.port{position:absolute;width:13px;height:13px;border-radius:50%;background:#fff;border:2px solid var(--c);z-index:2}
.port.out{right:7px;top:50%;margin-top:-6.5px;cursor:crosshair}
.port.out:hover,.port.in.hot{background:var(--c);transform:scale(1.25)}
.port.in{left:-8px;top:18px}
.cw-tools{position:absolute;left:12px;top:12px;display:flex;gap:4px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:4px;z-index:3;box-shadow:var(--shadow)}
.cw-tools button{padding:5px 9px;border:none}
.cw-tools button.on{background:var(--brand-soft);color:var(--brand)}
.zoombar{position:absolute;right:12px;bottom:12px;display:flex;gap:2px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:3px;z-index:3;box-shadow:var(--shadow)}
.zoombar button{border:none;padding:4px 9px}
.zoombar span{font-size:12px;color:var(--muted);min-width:44px;text-align:center}
canvas.minimap{position:absolute;right:12px;bottom:54px;width:180px;height:110px;background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:10px;z-index:3;box-shadow:var(--shadow);cursor:pointer}
.hint{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);background:rgba(29,34,51,.85);color:#fff;font-size:12px;padding:6px 12px;border-radius:99px;z-index:3;pointer-events:none}

.props{border-left:1px solid var(--line);overflow:auto;background:#fff;padding:16px}
.props h3{margin:0 0 4px;font-size:15px;display:flex;align-items:center;gap:8px}
.props .sub{color:var(--faint);font-size:12px;margin-bottom:14px}
.props .form{gap:12px}
.opt-list{display:grid;gap:8px}
.opt{display:grid;grid-template-columns:1fr auto;gap:6px;background:#fafbfd;border:1px solid var(--line2);border-radius:8px;padding:8px}
.opt .two{display:grid;gap:6px}
.vars{display:flex;flex-wrap:wrap;gap:5px}
.vars span{font-size:11px;background:var(--brand-soft);color:var(--brand);padding:2px 7px;border-radius:6px;cursor:pointer;font-family:ui-monospace,Menlo,monospace}
.issues{display:grid;gap:6px;margin-top:8px}
.issue{font-size:12.5px;padding:7px 10px;border-radius:8px;cursor:pointer}
.issue.error{background:var(--red-soft);color:#b42318} .issue.warn{background:#fff7e6;color:#9a5b00}
.kbd{font-family:ui-monospace,monospace;font-size:11px;background:#f0f1f6;border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:0 5px}
.divider{height:1px;background:var(--line);margin:14px 0}

/* test chat */
.testpanel{position:absolute;right:0;top:0;bottom:0;width:360px;background:#fff;border-left:1px solid var(--line);display:none;flex-direction:column;z-index:8;box-shadow:-8px 0 24px rgba(20,24,40,.08)}
.testpanel.open{display:flex}
.tp-head{display:flex;align-items:center;gap:8px;padding:10px 12px;background:#075e54;color:#fff}
.tp-head b{flex:1}
.tp-head button{background:rgba(255,255,255,.15);border:none;color:#fff}
.chat{flex:1;overflow:auto;padding:14px 12px;background:var(--wa-bg);display:flex;flex-direction:column;gap:8px}
.bub{max-width:85%;background:#fff;border-radius:9px;padding:7px 10px;font-size:13.5px;box-shadow:0 1px .5px rgba(0,0,0,.13);word-break:break-word;align-self:flex-start}
.bub.me{align-self:flex-end;background:var(--wa-out)}
.bub .hd{font-weight:700;margin-bottom:3px}
.bub .ft{color:#8696a0;font-size:12px;margin-top:4px}
.bub img,.bub video{max-width:100%;border-radius:6px;display:block;margin-bottom:4px}
.bub-btns{display:grid;gap:4px;margin-top:6px;border-top:1px solid #eee;padding-top:6px}
.bub-btns button{justify-content:center;border:none;color:#027eb5;background:#fff;font-weight:500;padding:6px}
.bub-btns button:hover{background:#f5f6f6}
.list-rows{display:grid;gap:2px;margin-top:6px}
.list-rows button{justify-content:flex-start;flex-direction:column;align-items:flex-start;border:1px solid #eee;gap:0;text-align:left;white-space:normal}
.list-rows small{color:#8696a0;font-weight:400}
.sysmsg{align-self:center;background:#fff8c5;color:#54656f;font-size:11.5px;padding:4px 10px;border-radius:7px;text-align:center;max-width:95%}
.tp-vars{font-size:11.5px;border-top:1px solid var(--line);padding:8px 12px;max-height:110px;overflow:auto;color:var(--muted);background:#fafbfd}
.tp-input{display:flex;gap:6px;padding:8px;border-top:1px solid var(--line);background:#f0f2f5}
.tp-input input{border-radius:20px}
.tp-input button{border-radius:50%;width:38px;height:38px;justify-content:center;padding:0;background:#00a884;color:#fff;border:none}

/* inbox */
.inbox{display:grid;grid-template-columns:320px 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);height:calc(100vh - 160px);min-height:420px;overflow:hidden}
.clist{border-right:1px solid var(--line);overflow:auto}
.citem{padding:11px 14px;border-bottom:1px solid var(--line2);cursor:pointer}
.citem:hover,.citem.sel{background:#f7f5ff}
.citem b{display:flex;justify-content:space-between;gap:6px}
.citem .last{color:var(--muted);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cdetail{display:flex;flex-direction:column;min-width:0}
.cd-head{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.cd-chat{flex:1;overflow:auto;background:var(--wa-bg);padding:14px;display:flex;flex-direction:column;gap:6px}
.cd-side{padding:10px 16px;border-top:1px solid var(--line);font-size:12.5px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}

@media (max-width:1000px){
  .bbody{grid-template-columns:64px 1fr}
  .palette{padding:10px 6px}
  .palette h4,.pitem b,.pitem small,.palette .search{display:none}
  .pitem{justify-content:center;padding:8px 4px}
  .props{position:absolute;right:0;top:0;bottom:0;width:min(320px,90vw);z-index:7;box-shadow:-8px 0 24px rgba(20,24,40,.1);display:none}
  .props.show{display:block}
  .inbox{grid-template-columns:1fr}
  .inbox.has-sel .clist{display:none}
  .inbox:not(.has-sel) .cdetail{display:none}
  .testpanel{width:100%}
}

/* ---------------- multi-tenant additions ---------------- */
body.booting .topnav, body.auth .topnav{display:none}
.navright{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:13px;white-space:nowrap}
.navright .who{display:flex;flex-direction:column;align-items:flex-end;line-height:1.2}
.navright .who small{color:var(--faint);font-size:11px}
#banner .bar{padding:9px 20px;font-size:13px;display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap}
#banner .bar.warn{background:#fff4dc;color:#92400e}
#banner .bar.err{background:var(--red-soft);color:#b42318}
#banner .bar.imp{background:#1d2233;color:#fff}
#banner .bar.imp button{background:#fff;color:#1d2233;border:none}
body.in-builder #banner{display:none}
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(1200px 600px at 20% -10%,#ece7ff 0,transparent 60%),radial-gradient(900px 500px at 110% 110%,#dcfce7 0,transparent 60%),var(--bg)}
.auth-card{width:100%;max-width:400px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:0 10px 40px rgba(20,24,40,.08)}
.auth-card h1{font-size:22px;margin:10px 0 4px}
.auth-card .brand{margin-bottom:6px}
.auth-card form{display:grid;gap:12px;margin-top:18px}
.auth-card .switch-link{text-align:center;margin-top:14px;font-size:13px;color:var(--muted)}
.auth-card button.primary{justify-content:center;padding:10px}
#modal{position:fixed;inset:0;background:rgba(20,24,40,.45);display:grid;place-items:center;z-index:60;padding:16px}
#modal[hidden]{display:none}
.mbox{background:#fff;border-radius:14px;width:100%;max-width:520px;max-height:90vh;overflow:auto;padding:22px;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.mbox h3{margin:0 0 14px}
.mbox .form{max-width:none}
.mbox .acts{display:flex;justify-content:flex-end;gap:8px;margin-top:6px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.meter{height:6px;background:#eef0f6;border-radius:99px;overflow:hidden;margin-top:4px}
.meter i{display:block;height:100%;background:var(--brand)}
.meter.hot i{background:var(--red)}
.usage{display:grid;gap:12px}
.usage .u small{color:var(--muted)}
.plan-card h3{margin:0;font-size:16px}
.plan-card .price{font-size:22px;font-weight:700;margin:6px 0}
.plan-card ul{margin:8px 0 0;padding-left:18px;color:var(--muted);font-size:13px}
.tbl-wrap{overflow-x:auto}
.check{display:flex;align-items:center;gap:8px}
.check input{width:auto}
@media (max-width:700px){.navright .who{display:none}.two-col{grid-template-columns:1fr}}