/* kanon — sober tool styling. One sans, one mono with tabular figures, neutral ground,
   one accent; red/amber/green only for risk levels. Mobile first; desk layout from 1000px. */
:root {
  --bg: #f4f5f6;
  --surface: #ffffff;
  --surface-2: #f0f2f4;
  --ink: #15181c;
  --muted: #59626d;
  --line: #dadfe4;
  --line-strong: #c3cad2;
  --accent: #2446b8;
  --accent-ink: #ffffff;
  --accent-soft: #e6ebfa;
  --hi: #b3261e; --hi-soft: #fbe9e7;
  --mid: #9a5b00; --mid-soft: #fdf1dc;
  --lo: #1d6b3f; --lo-soft: #e3f3e9;
  --bar: #9aa6b4;
  --focus: #2446b8;
  --sans: 'Public Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --radius: 6px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121417; --surface: #1a1d21; --surface-2: #22262b; --ink: #e7eaee; --muted: #9ba5b0;
    --line: #2c3137; --line-strong: #3b424a; --accent: #8fa6ff; --accent-ink: #0f1420; --accent-soft: #1f2741;
    --hi: #ff8b7f; --hi-soft: #3a1d1b; --mid: #f0b453; --mid-soft: #372912; --lo: #6fd39a; --lo-soft: #15301f;
    --bar: #59636f; --focus: #8fa6ff; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121417; --surface: #1a1d21; --surface-2: #22262b; --ink: #e7eaee; --muted: #9ba5b0;
  --line: #2c3137; --line-strong: #3b424a; --accent: #8fa6ff; --accent-ink: #0f1420; --accent-soft: #1f2741;
  --hi: #ff8b7f; --hi-soft: #3a1d1b; --mid: #f0b453; --mid-soft: #372912; --lo: #6fd39a; --lo-soft: #15301f;
  --bar: #59636f; --focus: #8fa6ff; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 15px/1.55 var(--sans); }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.num, .mono, code, .kpi .v, .timing, td.num, th.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
code { font-size: .92em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 16px; }
.top { border-bottom: 1px solid var(--line); background: var(--surface); }
.top-in { display: flex; align-items: center; justify-content: space-between; min-height: 56px; gap: 12px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font: 700 18px/1 var(--sans); color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.mark { width: 18px; height: 18px; border-radius: 4px; background:
  linear-gradient(var(--accent), var(--accent)) 0 0/8px 8px no-repeat,
  linear-gradient(var(--accent), var(--accent)) 10px 0/8px 8px no-repeat,
  linear-gradient(var(--accent), var(--accent)) 0 10px/8px 8px no-repeat,
  linear-gradient(var(--line-strong), var(--line-strong)) 10px 10px/8px 8px no-repeat; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { color: var(--muted); text-decoration: none; padding: 10px 8px; border-radius: var(--radius); font-weight: 500; }
.nav a[aria-current="page"] { color: var(--ink); }
.nav a:hover { color: var(--ink); background: var(--surface-2); }
.theme-btn { font: 500 13px var(--sans); color: var(--muted); background: none; border: 1px solid var(--line); border-radius: var(--radius); padding: 7px 10px; min-height: 36px; cursor: pointer; margin-left: 4px; }
.theme-btn:hover { color: var(--ink); border-color: var(--line-strong); }

.intro { padding: 24px 0 8px; max-width: 760px; }
h1 { font: 700 27px/1.2 var(--sans); letter-spacing: -.015em; margin: 0 0 10px; }
.lede { margin: 0 0 14px; color: var(--ink); font-size: 16px; }
.local { display: flex; gap: 10px; align-items: flex-start; margin: 0; padding: 10px 12px; border: 1px solid var(--line); border-left: 3px solid var(--accent); background: var(--surface); border-radius: var(--radius); font-size: 14px; }
.local svg { flex: none; margin-top: 3px; color: var(--accent); }

.layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; padding: 16px 0 28px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 16px; min-width: 0; }
h2 { font: 600 17px/1.3 var(--sans); margin: 0 0 12px; display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.step { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line-strong); font: 600 12px var(--mono); color: var(--muted); }
h3 { font: 600 14px/1.3 var(--sans); margin: 22px 0 6px; text-transform: none; }
.hint { color: var(--muted); font-size: 13.5px; margin: 0 0 10px; }
.hint b { color: var(--ink); font-weight: 600; }
.note { font-size: 13.5px; margin: 10px 0 0; padding: 9px 11px; background: var(--surface-2); border-radius: var(--radius); }
.muted { color: var(--muted); }
.timing { margin-left: auto; font-size: 12px; font-weight: 400; color: var(--muted); }

/* data */
.drop { display: grid; gap: 4px; place-items: center; text-align: center; padding: 22px 14px; border: 1.5px dashed var(--line-strong); border-radius: 8px; cursor: pointer; background: var(--surface-2); min-height: 96px; }
.drop:hover, .drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop-main { font-weight: 500; }
.drop-main u { color: var(--accent); text-decoration-thickness: 1px; }
.drop-sub { font-size: 12.5px; color: var(--muted); }
.data-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.data-row .select { flex: 1 1 200px; }
.status { margin: 10px 0 0; font-size: 13.5px; }
.status.err { color: var(--hi); }
.status .tag { display: inline-block; font: 600 11px/1 var(--sans); letter-spacing: .03em; text-transform: uppercase; padding: 4px 6px; border-radius: 4px; background: var(--accent-soft); color: var(--accent); margin-right: 6px; vertical-align: 1px; }

.btn { font: 600 14px var(--sans); border-radius: var(--radius); padding: 10px 14px; min-height: 44px; cursor: pointer; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); width: 100%; }
.btn.primary:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .5; cursor: default; }
.select, input[type="number"] { font: 400 14px var(--sans); color: var(--ink); background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 9px 10px; min-height: 44px; max-width: 100%; }
.select.small { min-height: 40px; padding: 7px 8px; font-size: 13.5px; }
input[type="number"] { width: 84px; font-family: var(--mono); }

/* tables */
.scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; white-space: nowrap; }
th { font-weight: 600; font-size: 12px; color: var(--muted); background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; }
td.name { white-space: normal; width: 56%; }
td.name .cname { display: block; font-weight: 600; overflow-wrap: anywhere; }
td.name .kind { display: block; margin-top: 1px; }
td.role { width: 44%; }
td.role .select { width: 100%; min-width: 146px; }
.cols .select { min-height: 38px; padding: 6px 8px; font-size: 13.5px; }
.sugg { display: block; font-size: 11.5px; color: var(--muted); font-weight: 400; white-space: normal; max-width: 260px; }
.kind { font: 500 12px var(--mono); color: var(--muted); }
.hidden-val { color: var(--muted); font-style: italic; }

/* results */
.empty { color: var(--muted); padding: 24px 0; text-align: center; }
.kpis { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.kpi { border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; background: var(--surface); position: relative; min-width: 0; }
.kpi .l { font-size: 12.5px; color: var(--muted); font-weight: 500; }
.kpi .v { font-size: 26px; font-weight: 600; line-height: 1.15; margin: 2px 0; letter-spacing: -.02em; overflow-wrap: anywhere; }
.kpi .s { font-size: 12px; color: var(--muted); }
.kpi.hi { border-color: color-mix(in srgb, var(--hi) 45%, var(--line)); background: var(--hi-soft); } .kpi.hi .v { color: var(--hi); }
.kpi.mid { border-color: color-mix(in srgb, var(--mid) 45%, var(--line)); background: var(--mid-soft); } .kpi.mid .v { color: var(--mid); }
.kpi.lo { border-color: color-mix(in srgb, var(--lo) 45%, var(--line)); background: var(--lo-soft); } .kpi.lo .v { color: var(--lo); }
.level { display: inline-block; font: 600 10.5px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase; padding: 3px 5px; border-radius: 3px; margin-left: 4px; vertical-align: 2px; }
.level.hi { background: var(--hi); color: var(--surface); } .level.mid { background: var(--mid); color: var(--surface); } .level.lo { background: var(--lo); color: var(--surface); }
.delta { font-size: 13.5px; margin: 10px 0 0; color: var(--muted); }
.delta b { color: var(--ink); font-family: var(--mono); font-weight: 600; }
.dist { display: grid; gap: 5px; }
.dist-row { display: grid; grid-template-columns: 62px minmax(0, 1fr) 118px; gap: 8px; align-items: center; font-size: 13px; }
.dist-row .lab { font-family: var(--mono); color: var(--muted); text-align: right; }
.dist-row .track { display: block; height: 14px; background: var(--surface-2); border-radius: 3px; overflow: hidden; }
.dist-row .fill { display: block; height: 100%; background: var(--bar); border-radius: 3px; }
.dist-row .fill.hi { background: var(--hi); } .dist-row .fill.mid { background: var(--mid); }
.dist-row .cnt { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; font-size: 12.5px; }
.risk-head { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; margin-bottom: 8px; }
.risk-head .hint { margin: 0; flex: 1 1 220px; }
td.rk { font-weight: 600; white-space: normal; min-width: 128px; }
td.rk .sugg { max-width: 190px; }
#risk-table th, #risk-table td, #drivers th, #drivers td { padding-left: 8px; padding-right: 8px; }
#drivers td:first-child { white-space: normal; min-width: 140px; }
.pct.hi { color: var(--hi); font-weight: 600; } .pct.mid { color: var(--mid); font-weight: 600; } .pct.lo { color: var(--lo); }
.check { display: flex; gap: 8px; align-items: flex-start; font-size: 13.5px; margin: 4px 0 10px; cursor: pointer; min-height: 32px; }
.check input { margin-top: 3px; width: 18px; height: 18px; flex: none; accent-color: var(--accent); }

/* what-if */
.live { position: sticky; top: 0; z-index: 2; margin: -4px -16px 12px; padding: 9px 16px; background: var(--surface); border-bottom: 1px solid var(--line); font-size: 13.5px; display: flex; flex-wrap: wrap; gap: 4px 14px; }
.live span b { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.live .hi b { color: var(--hi); } .live .mid b { color: var(--mid); } .live .lo b { color: var(--lo); }
.gen { border-top: 1px solid var(--line); padding: 10px 0; display: grid; gap: 8px; }
.gen:first-child { border-top: 0; }
.gen-name { font-weight: 600; font-size: 14px; display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.gen-name .kind { font-weight: 400; }
.gen-ctl { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
.gen-ctl .select { width: 100%; }
.rare { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.rare-out { font-size: 12px; color: var(--muted); }
.field-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 10px; padding: 10px 0; border-top: 1px solid var(--line); font-size: 14px; }
.field-row label { font-weight: 500; }
.adv { margin-top: 4px; border-top: 1px solid var(--line); }
.adv summary { cursor: pointer; padding: 12px 0; font-weight: 500; min-height: 44px; display: flex; align-items: center; }
.adv .field-row:first-of-type { border-top: 0; }
#sec-export .btn.primary { margin: 6px 0 10px; }

.foot { border-top: 1px solid var(--line); padding: 18px 0 28px; font-size: 13px; color: var(--muted); }
.foot p { margin: 0 0 6px; max-width: 900px; }
.foot a { overflow-wrap: anywhere; }

@media (min-width: 560px) {
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gen-ctl { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
  .btn.primary { width: auto; }
  h1 { font-size: 32px; }
}
@media (min-width: 1000px) {
  .layout { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); align-items: start; }
  #sec-data { grid-column: 1; grid-row: 1; }
  #sec-cols { grid-column: 1; grid-row: 2; }
  #sec-whatif { grid-column: 1; grid-row: 3; }
  #sec-export { grid-column: 1; grid-row: 4; }
  #sec-results { grid-column: 2; grid-row: 1 / span 4; position: sticky; top: 12px; max-height: calc(100vh - 24px); overflow-y: auto; }
  .live { top: 0; }
}

/* about page */
.doc { max-width: 812px; padding-top: 24px; padding-bottom: 40px; }
.doc h2 { font-size: 21px; margin: 34px 0 10px; display: block; }
.doc h3 { font-size: 16px; margin: 22px 0 8px; }
.doc p, .doc li { font-size: 15.5px; }
.doc .toc { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; font-size: 14.5px; }
.doc .toc ol { margin: 6px 0 0; padding-left: 20px; columns: 1; }
.doc .formula { font-family: var(--mono); font-size: 13.5px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; overflow-x: auto; white-space: pre; }
.doc .scroll { margin: 10px 0 14px; background: var(--surface); }
.doc figcaption { font-size: 13px; color: var(--muted); margin-top: -6px; }
.doc .callout { border-left: 3px solid var(--mid); background: var(--surface); padding: 10px 14px; border-radius: 0 var(--radius) var(--radius) 0; }
.refs li { margin-bottom: 8px; overflow-wrap: anywhere; }
@media (min-width: 700px) { .doc .toc ol { columns: 2; } }