:root{
  --bg:#1a212c; --panel:#252e3e; --panel-2:#2e3849; --line:#39435a;
  --text:#e9eef5; --muted:#8f9cb2; --accent:#4a9eff; --green:#3fbf6d; --red:#ef5f5f;
  --amber:#e0a63c; --series:#4fc3b0;
  --shadow:0 1px 2px #0003, 0 8px 24px -12px #0009;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
  font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
.hidden{display:none!important}
code{background:#00000033;padding:1px 5px;border-radius:4px;font-size:12px}

/* login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}
.login-card{width:340px}
.login-card h1{margin:0 0 18px;font-size:20px;font-weight:600}
.login-card label{display:block;margin-bottom:14px}

/* header */
header{display:flex;align-items:center;gap:20px;padding:0 20px;height:56px;
  background:#161c26;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{font-weight:600;letter-spacing:.2px}
header nav{display:flex;gap:4px}
.tab{background:none;border:0;color:var(--muted);padding:8px 14px;border-radius:6px;
  cursor:pointer;font-size:14px}
.tab:hover{color:var(--text);background:#ffffff0d}
.tab.active{color:#fff;background:var(--accent)}
header .right{margin-left:auto;display:flex;align-items:center;gap:14px}
.timer{font-variant-numeric:tabular-nums;background:#0f141d;border:1px solid var(--line);
  padding:5px 10px;border-radius:6px;color:var(--green);font-weight:600}
.timer.low{color:var(--red)}
.who{color:var(--muted)}
.link{background:none;border:0;color:var(--accent);cursor:pointer;padding:0;font-size:13px}

/* layout */
.tab-panel{max-width:1760px;margin:0 auto;padding:22px 28px 60px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:20px 22px;margin-bottom:16px;box-shadow:var(--shadow)}
.card-title{font-weight:600;font-size:13px;letter-spacing:.3px;margin-bottom:16px;
  display:flex;align-items:center;gap:10px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:760px){.grid{grid-template-columns:1fr}}

/* Simulate tab: inputs on the left, catalog as a sticky sidebar on the right,
   so the field browser stops pushing Result/Chart far down the page. */
.sim-top{display:grid;grid-template-columns:minmax(0,1fr) 560px;gap:16px;align-items:stretch;
  margin-bottom:16px}
.sim-expr{margin-bottom:0}
/* The right column height tracks the left. The Data fields card is absolutely
   positioned so its (internally scrolling) content can't inflate the row, and
   align-items:stretch then sizes the column to the Settings+Expression height. */
.sim-side{position:relative}
.sim-fields{position:absolute;inset:0;display:flex;flex-direction:column;margin-bottom:0}
@media(max-width:1100px){
  .sim-top{grid-template-columns:1fr}
  .sim-side{position:static}
  .sim-fields{position:static;display:block}
  .fields{flex:none;max-height:440px}
}
label{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.4px;
  color:var(--muted)}
label.block{margin-bottom:14px}
input,select,textarea{width:100%;margin-top:6px;background:var(--panel-2);color:var(--text);
  border:1px solid var(--line);border-radius:7px;padding:9px 11px;font-size:14px;
  font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
textarea{min-height:120px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
textarea.short{min-height:70px}
.period{display:flex;align-items:center;gap:8px;margin-top:6px}
.period input{margin:0;width:70px}
.period em{font-style:normal;color:var(--muted);font-size:11px}
.row{display:flex;align-items:center;gap:14px;margin-top:14px}
button.primary{background:var(--green);color:#08210f;border:0;border-radius:7px;
  padding:10px 22px;font-weight:600;cursor:pointer;font-size:14px}
button.primary:disabled{opacity:.5;cursor:default}
.muted{color:var(--muted);font-size:12px;text-transform:none;letter-spacing:0}
.err{color:var(--red);font-size:13px;min-height:18px}

/* tables */
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;color:var(--muted);font-weight:500;font-size:11px;
  text-transform:uppercase;letter-spacing:.4px;padding:8px 10px;border-bottom:1px solid var(--line)}
td{padding:9px 10px;border-bottom:1px solid #ffffff0d;vertical-align:top}
tr:hover td{background:#ffffff08}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}
.pill{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600}
.pill.COMPLETE{background:#3fbf6d22;color:var(--green)}
.pill.ERROR{background:#ef5f5f22;color:var(--red)}
.pill.SIMULATING,.pill.QUEUED{background:#4a9eff22;color:var(--accent)}
.pass{color:var(--green)}.fail{color:var(--red)}.warn{color:#e0a63c}

/* catalog explorer (category -> dataset -> fields) */
.search{margin-bottom:12px}
.fields{flex:1;min-height:0;overflow:auto;border:1px solid var(--line);border-radius:8px}
.ops-title{margin-top:16px;margin-bottom:10px;font-weight:600;font-size:13px}
.ops-title .muted{margin-left:6px}
.fields.ops{flex:0 0 auto;max-height:22%}
@media(max-width:1100px){.fields.ops{max-height:220px}}
.op-table td{padding-top:7px;padding-bottom:7px}
.op-table td:first-child{width:150px}
.cat-header{display:grid;grid-template-columns:26px 1fr 90px 90px;gap:8px;padding:8px 12px;
  font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);
  border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--panel);z-index:1}
.cat-header .num{text-align:right}
.cat{border-bottom:1px solid #ffffff0d}
.cat:last-child{border-bottom:0}
.cat-head{display:grid;grid-template-columns:26px 1fr 90px 90px;gap:8px;align-items:center;
  padding:9px 12px;cursor:pointer}
.cat-head:hover{background:#ffffff08}
.cat-name{font-weight:600}
.num{text-align:right;font-variant-numeric:tabular-nums;color:var(--muted)}
.tw{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:5px;color:var(--muted);font-size:13px;line-height:1}
.cat-head:hover .tw,.ds-head:hover .tw{border-color:var(--accent);color:var(--accent)}
.cat-kids{background:#00000022}
.ds{border-top:1px solid #ffffff0d}
.ds-head{display:grid;grid-template-columns:26px 1fr 90px 90px;gap:8px;align-items:center;
  padding:8px 12px 8px 30px;cursor:pointer}
.ds-head:hover{background:#ffffff08}
.ds-name{font-size:13px}
.ds-kids{padding:2px 0 8px 30px;background:#00000033}
.cat-loading{padding:10px 30px;color:var(--muted);font-size:12px}
.cat-note{margin:0 0 8px;padding:8px 10px}

/* field table (inside a dataset + in search results) */
.field-table{width:100%;border-collapse:collapse;table-layout:fixed}
.field-table td{font-size:12px}
.field-table td:first-child{word-break:break-word}
.field-table th,.field-table td{padding-left:10px;padding-right:10px}
.field-table th:nth-child(3),.field-table td:nth-child(3){width:74px}   /* Type  */
.field-table th:nth-child(4),.field-table td:nth-child(4){width:74px;text-align:right}  /* Coverage */
.field-link{color:var(--accent)}
.field-table tr:hover td{background:#ffffff08;cursor:pointer}
.field-table .cov{font-variant-numeric:tabular-nums;color:var(--muted);white-space:nowrap}

/* loading state (shown in the result card while a simulation runs) */
.loading{display:flex;align-items:center;gap:12px;color:var(--muted);padding:10px 0;font-size:14px}
.spinner{width:18px;height:18px;flex:none;border:2px solid var(--line);
  border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.dots::after{content:'';animation:dots 1.2s steps(1,end) infinite}
@keyframes dots{0%{content:''}25%{content:'.'}50%{content:'..'}75%{content:'...'}}

/* chart */
.card-title select{width:auto;margin:0;padding:5px 10px;font-size:13px}
.chart-hint{margin-left:auto}
#chart,#compare-chart{cursor:crosshair;width:100%;height:320px;display:block;overflow:visible}
.chart-panel-label{font-size:11px;font-weight:600;letter-spacing:.3px}
.chart-panel-bg{fill:#ffffff06;stroke:var(--line);stroke-width:1}

/* metric toggle chips (small multiples selector) */
.chart-metrics{display:flex;gap:6px;flex-wrap:wrap}
.metric-chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel-2);
  color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:4px 11px;
  font-size:12px;font-weight:500;cursor:pointer;line-height:1}
.metric-chip .chip-dot{width:8px;height:8px;border-radius:50%;background:var(--line)}
.metric-chip:hover{color:var(--text);border-color:var(--muted)}
.metric-chip.on{color:var(--text);border-color:var(--chip)}
.metric-chip.on .chip-dot{background:var(--chip)}

/* compare-PnL legend */
.chart-legend{display:flex;gap:16px;flex-wrap:wrap;margin-top:10px;font-size:12px;color:var(--muted)}
.leg-item{display:flex;align-items:center;gap:6px}
.leg-dot{width:10px;height:10px;border-radius:3px;flex:none}

/* my-alphas controls + sortable table */
.alphas-controls{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.alphas-controls .search{flex:1;margin:0}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:7px;overflow:hidden}
.seg button{background:none;border:0;color:var(--muted);padding:6px 13px;font-size:12px;cursor:pointer}
.seg button:hover{color:var(--text);background:#ffffff08}
.seg button.on{background:var(--accent);color:#fff}
th.sortable{cursor:pointer;user-select:none;white-space:nowrap}
th.sortable:hover{color:var(--text)}
th .caret{font-style:normal;font-size:9px;margin-left:3px;color:var(--accent)}
.cmp-col{width:26px;text-align:center;padding-left:6px;padding-right:0}
.cmp-box{width:auto;margin:0;accent-color:var(--series);cursor:pointer}

/* expression editor: highlight overlay behind a transparent-text textarea */
.expr-wrap{position:relative;margin-top:6px}
/* both layers must share identical box metrics so glyphs line up exactly */
.expr-hl,.expr-wrap #expression{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;line-height:1.5;
  padding:9px 11px;border:1px solid transparent;border-radius:7px;
  white-space:pre-wrap;word-break:break-word;margin:0}
.expr-hl{position:absolute;inset:0;z-index:1;overflow:auto;
  background:var(--panel-2);color:var(--text);pointer-events:none}
.expr-wrap #expression{position:relative;z-index:2;min-height:120px;resize:vertical;
  background:transparent;color:transparent;caret-color:var(--text);border-color:var(--line)}
.expr-wrap #expression:focus{border-color:var(--accent)}
/* Dracula syntax theme */
.expr-hl .tk-num{color:#bd93f9}                 /* numbers — purple */
.expr-hl .tk-op-ok{color:#ff79c6}               /* valid operator — pink */
.expr-hl .tk-op-bad{color:#ff5555}              /* unknown operator — red */
.expr-hl .tk-field-ok{color:#8be9fd}            /* valid field — cyan */
.expr-hl .tk-field-bad{color:#ff5555}           /* unknown field — red */
.expr-hl .tk-field-wait{color:var(--text)}      /* field being checked — neutral */
.expr-hl .tk-var{color:#ffb86c}                 /* locally-assigned variable — orange */
.expr-status{margin-top:8px;min-height:16px;font-size:12px}
.expr-status.ok{color:var(--green)}
.expr-status .err{font-size:12px;min-height:0}

/* expression autocomplete */
.expr-ac{position:absolute;left:0;right:0;z-index:6;margin-top:2px;background:var(--panel-2);
  border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:0 8px 24px -8px #000a}
.ac-row{display:flex;gap:12px;padding:7px 11px;cursor:pointer;align-items:baseline}
.ac-row:hover,.ac-row.on{background:#4a9eff1f}
.ac-id{font-family:ui-monospace,Menlo,monospace;color:var(--accent);font-size:12px;min-width:180px}
.ac-kind{font-size:9.5px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;
  padding:1px 6px;border-radius:20px;flex:none;align-self:center}
.ac-kind.op{background:#ff79c622;color:#ff79c6}
.ac-kind.field{background:#8be9fd22;color:#8be9fd}
.ac-desc{color:var(--muted);font-size:12px;flex:1}
.expr-tip{display:flex;align-items:center;gap:5px}
.expr-tip kbd{font-family:ui-monospace,Menlo,monospace;font-size:11px;background:#00000033;
  border:1px solid var(--line);border-radius:4px;padding:1px 5px;color:#c3ccdb}
.zoom-btn{width:26px;height:26px;flex:none;background:var(--panel-2);color:var(--text);
  border:1px solid var(--line);border-radius:6px;cursor:pointer;font-size:15px;line-height:1;
  display:flex;align-items:center;justify-content:center;padding:0}
.zoom-btn:hover{border-color:var(--accent);color:var(--accent)}
/* pan slider — thin track with a capsule handle carrying left/right arrows */
.chart-pan{-webkit-appearance:none;appearance:none;width:100%;height:22px;
  margin:12px 0 0;background:transparent;cursor:grab}
.chart-pan:active{cursor:grabbing}
.chart-pan::-webkit-slider-runnable-track{height:2px;border-radius:2px;background:var(--line)}
.chart-pan::-moz-range-track{height:2px;border-radius:2px;background:var(--line)}
.chart-pan::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;
  width:40px;height:20px;margin-top:-9px;border-radius:7px;
  border:1.5px solid var(--muted);background:var(--panel-2) center/17px no-repeat
    url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='17' height='10' viewBox='0 0 17 10'%3E%3Cpath d='M5.5 1 1.5 5l4 4z' fill='%2393a0b5'/%3E%3Cpath d='M11.5 1l4 4-4 4z' fill='%2393a0b5'/%3E%3C/svg%3E");
  box-shadow:0 1px 5px #0007}
.chart-pan::-moz-range-thumb{width:40px;height:20px;border-radius:7px;
  border:1.5px solid var(--muted);background:var(--panel-2) center/17px no-repeat
    url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='17' height='10' viewBox='0 0 17 10'%3E%3Cpath d='M5.5 1 1.5 5l4 4z' fill='%2393a0b5'/%3E%3Cpath d='M11.5 1l4 4-4 4z' fill='%2393a0b5'/%3E%3C/svg%3E");
  box-shadow:0 1px 5px #0007}
.chart-pan:hover::-webkit-slider-thumb{border-color:var(--accent)}
.chart-pan:hover::-moz-range-thumb{border-color:var(--accent)}
.chart-pan:disabled{opacity:.3;cursor:default}
.chart-wrap{position:relative;margin-top:4px}
#chart{width:100%;height:320px;display:block;overflow:visible}
.chart-line{fill:none;stroke:var(--series);stroke-width:1.3;vector-effect:non-scaling-stroke}
.chart-area{fill:url(#chart-grad);stroke:none}
.chart-test{fill:var(--accent);opacity:.09}
.chart-split{stroke:var(--accent);stroke-width:1;stroke-dasharray:4 3;opacity:.75;
  vector-effect:non-scaling-stroke}
.chart-stage{fill:var(--accent);font-size:10px;font-weight:700;letter-spacing:.6px}
.chart-stage.muted-stage{fill:var(--muted);font-weight:600}
.chart-axis{stroke:var(--line);stroke-width:1;vector-effect:non-scaling-stroke}
.chart-zero{stroke:var(--muted);stroke-width:1;stroke-dasharray:3 3;vector-effect:non-scaling-stroke}
.chart-label{fill:var(--muted);font-size:11px}
.chart-cursor{stroke:var(--muted);stroke-width:1;vector-effect:non-scaling-stroke}
.chart-dot{fill:#4fc3b0;stroke:var(--panel);stroke-width:2}
.chart-tip{position:absolute;pointer-events:none;display:none;background:var(--panel-2);
  border:1px solid var(--line);border-radius:7px;padding:7px 11px;font-size:12px;
  white-space:nowrap;transform:translate(-50%,-120%);box-shadow:0 4px 14px #0006;z-index:2}
.chart-tip b{color:#4fc3b0;font-variant-numeric:tabular-nums}
.chart-empty{color:var(--muted);font-size:13px;padding:14px 0}

/* output zone: full-width stacked cards — Result -> Chart -> checks -> yearly */
.sim-out{margin-bottom:16px}
#yearly-stats{overflow-x:auto;margin-top:14px}

/* checks grouped by pass / fail / pending (collapsible) */
.checks-groups{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.check-group{border:1px solid var(--line);border-left-width:3px;border-radius:8px;overflow:hidden}
.check-group.pass{border-left-color:var(--green)}
.check-group.fail{border-left-color:var(--red)}
.check-group.pending{border-left-color:var(--muted)}
.check-head{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;
  cursor:pointer;font-weight:600;font-size:13px}
.check-group.pass .check-head{color:var(--green)}
.check-group.fail .check-head{color:var(--red)}
.check-group.pending .check-head{color:var(--muted)}
.check-caret{display:inline-flex;align-items:center;transition:transform .15s}
.check-group.open .check-caret{transform:rotate(180deg)}
.check-body{display:none;padding:0 12px 8px}
.check-group.open .check-body{display:block}
.check-row{display:flex;justify-content:space-between;gap:12px;padding:7px 0;
  border-top:1px solid #ffffff0d;font-size:12px}
.check-name{color:var(--text)}
.check-val{color:var(--muted)}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-bottom:14px}
.metric{background:var(--panel-2);border:1px solid var(--line);border-radius:9px;
  padding:12px 14px;position:relative}
.metric .k{color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.7px}
.metric .v{font-size:20px;font-weight:600;margin-top:4px;font-variant-numeric:tabular-nums;
  letter-spacing:-.2px}
.prod-corr{display:flex;align-items:baseline;gap:10px;margin:2px 0 14px}
.prod-corr .pc-k{color:var(--muted);font-size:12px}
.prod-corr .pc-v{display:inline-flex;align-items:center;gap:7px;line-height:1;
  font-size:15px;font-weight:600;font-variant-numeric:tabular-nums}
.prod-corr .pc-v.muted{font-size:12px;font-weight:500;text-transform:none;letter-spacing:0}
.prod-corr .pc-v .spinner{width:12px;height:12px;border-width:2px}
/* semantic state: judged against WQ's checks + the funnel's submission bar */
.metric.m-good .v{color:var(--green)}
.metric.m-warn .v{color:var(--amber)}
.metric.m-bad  .v{color:var(--red)}
.metric.m-good,.metric.m-warn,.metric.m-bad{border-color:currentColor}
.metric.m-good{color:#3fbf6d40}.metric.m-warn{color:#e0a63c40}.metric.m-bad{color:#ef5f5f40}
.metric.m-good::after,.metric.m-warn::after,.metric.m-bad::after{
  content:'';position:absolute;top:12px;right:12px;width:6px;height:6px;border-radius:50%}
.metric.m-good::after{background:var(--green)}
.metric.m-warn::after{background:var(--amber)}
.metric.m-bad::after{background:var(--red)}