/* ============================================================
 * CE-Engine — a financial instrument, not a landing page.
 * Palette: Paper / Ink / Verified / Signal / Graphite. No gradients,
 * no cards-in-cards, one entrance animation, ledger notation.
 * ============================================================ */

:root {
  --paper: #FAFAF7;
  --ink: #16211C;
  --verified: #1E6B4E;
  --signal: #B3261E;
  --graphite: #6B7370;
  --hairline: #E4E4DE;
  --amber: #8a6d1a;
  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
}

.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px 96px; }

/* ---- header / nav ---- */
header.site {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 22px 0 14px; border-bottom: 1px solid var(--ink);
}
header.site h1 { font-family: var(--serif); font-weight: 400; font-size: 26px; letter-spacing: 0.01em; }
header.site h1 .tick { color: var(--verified); }
nav.tabs { display: flex; gap: 4px; }
nav.tabs button {
  font: 600 14px var(--sans); color: var(--graphite);
  background: none; border: none; padding: 6px 12px; cursor: pointer; border-radius: 3px;
}
nav.tabs button[aria-selected="true"] { color: var(--ink); text-decoration: underline; text-underline-offset: 5px; }
nav.tabs button:hover { color: var(--ink); }

/* ---- ledger numerals ---- */
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.neg { color: var(--signal); }
.pos-pass { color: var(--verified); }
.dim { color: var(--graphite); font-size: 0.85em; }

/* ---- sections: flat expandable rows, hairline dividers ---- */
section.block { border-bottom: 1px solid var(--hairline); padding: 26px 0; }
section.block > h2 {
  font-family: var(--serif); font-weight: 400; font-size: 21px; margin-bottom: 14px;
}
details.row { border-top: 1px solid var(--hairline); }
details.row:last-child { border-bottom: 1px solid var(--hairline); }
details.row summary {
  cursor: pointer; padding: 10px 2px; font-weight: 600; font-size: 14px;
  display: flex; justify-content: space-between; align-items: baseline; list-style: none;
}
details.row summary::-webkit-details-marker { display: none; }
details.row summary::after { content: "+"; color: var(--graphite); font-family: var(--mono); }
details.row[open] summary::after { content: "–"; }
details.row .body { padding: 4px 2px 16px; }

/* ---- forms ---- */
form.deal { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 20px; }
@media (max-width: 620px) { form.deal { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 4px; }
.field.span2 { grid-column: 1 / -1; }
.field label { font-size: 12.5px; font-weight: 600; color: var(--graphite); }
.field input, .field select {
  font: 500 15px var(--mono); color: var(--ink); background: #fff;
  border: 1px solid var(--hairline); border-radius: 3px; padding: 8px 10px; width: 100%;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--ink); }
.field .hint { font-size: 11.5px; color: var(--graphite); }
.check { display: flex; gap: 8px; align-items: center; font-size: 14px; }
.check input { width: 15px; height: 15px; accent-color: var(--verified); }

button.primary {
  font: 600 15px var(--sans); color: var(--paper); background: var(--ink);
  border: none; border-radius: 3px; padding: 11px 22px; cursor: pointer;
}
button.primary:hover { background: #223129; }
button.ghost {
  font: 600 13.5px var(--sans); color: var(--ink); background: none;
  border: 1px solid var(--ink); border-radius: 3px; padding: 8px 14px; cursor: pointer;
}
button.ghost:hover { background: #f0f0ea; }
button.link { font: 600 13px var(--sans); background: none; border: none; color: var(--graphite); cursor: pointer; text-decoration: underline; }

/* ---- the verdict block (the hero) ---- */
.verdict {
  padding: 34px 0 26px;
  animation: settle 380ms ease-out;
}
@media (prefers-reduced-motion: reduce) { .verdict { animation: none; } }
@keyframes settle { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.verdict .scoreline { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; }
.verdict .score { font: 400 76px/1 var(--serif); letter-spacing: -0.02em; }
.verdict .score .of { font-size: 26px; color: var(--graphite); }
.verdict .bandlabel { font: 600 14px var(--sans); text-transform: uppercase; letter-spacing: 0.08em; }
.verdict .bandlabel.buy { color: var(--verified); }
.verdict .bandlabel.negotiate { color: var(--ink); }
.verdict .bandlabel.marginal { color: var(--amber); }
.verdict .bandlabel.walk { color: var(--signal); }
.verdict .sentence { font-family: var(--serif); font-size: 23px; margin-top: 12px; max-width: 640px; }
.verdict .nego { margin-top: 14px; font-size: 15px; }
.verdict .nego .num { font-weight: 600; }
.verdict .why { margin-top: 10px; font-size: 13.5px; color: var(--graphite); }
.flagline { margin-top: 12px; font-size: 13.5px; }
.flagline .flag { color: var(--signal); font-weight: 600; }
.flagline .amberflag { color: var(--amber); font-weight: 600; }

/* ---- scenario strip: pinned beneath verdict ---- */
.scenario-strip { position: sticky; top: 0; z-index: 5; background: var(--paper); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--hairline); padding: 10px 0 12px; }
.scenario-toggle { display: flex; gap: 2px; margin-bottom: 10px; }
.scenario-toggle button {
  font: 600 13px var(--sans); padding: 6px 14px; cursor: pointer;
  background: none; border: 1px solid var(--hairline); color: var(--graphite); border-radius: 3px;
}
.scenario-toggle button[aria-pressed="true"] { border-color: var(--ink); color: var(--ink); background: #fff; }
.scenario-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 560px) { .scenario-cards { grid-template-columns: 1fr; } }
.scen { border: 1px solid var(--hairline); border-radius: 3px; padding: 8px 10px; background: #fff; }
.scen.active { border-color: var(--ink); }
.scen h4 { font: 600 11.5px var(--sans); text-transform: uppercase; letter-spacing: 0.07em; color: var(--graphite); margin-bottom: 4px; }
.scen .grid { display: grid; grid-template-columns: auto 1fr; gap: 1px 10px; font-size: 12.5px; }
.scen .grid span:nth-child(odd) { color: var(--graphite); }
.scen .grid .num { text-align: right; font-size: 12.5px; }

/* ---- sliders (custom scenario + reno) ---- */
.sliders { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; padding: 14px 0 6px; }
@media (max-width: 620px) { .sliders { grid-template-columns: 1fr; } }
.slider { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; font-size: 12.5px; }
.slider label { color: var(--graphite); font-weight: 600; }
.slider output { font-family: var(--mono); text-align: right; }
.slider input[type=range] { grid-column: 1 / -1; width: 100%; accent-color: var(--ink); height: 22px; }

/* ---- metric tables ---- */
table.metrics { width: 100%; border-collapse: collapse; }
table.metrics th, table.metrics td { text-align: left; padding: 8px 10px 8px 0; border-bottom: 1px solid var(--hairline); font-size: 14px; vertical-align: baseline; }
table.metrics td.num, table.metrics th.num { text-align: right; padding-right: 0; white-space: nowrap; }
table.metrics th { font-weight: 600; }
table.metrics .sub { color: var(--graphite); font-size: 12.5px; }

.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: 3px; overflow: hidden; }
@media (max-width: 620px) { .kpis { grid-template-columns: repeat(2, 1fr); } }
.kpi { background: #fff; padding: 12px 14px; }
.kpi .label { font-size: 11.5px; font-weight: 600; color: var(--graphite); }
.kpi .value { font: 600 21px var(--mono); margin-top: 2px; font-variant-numeric: tabular-nums; }
.kpi .value.neg { color: var(--signal); }
.kpi .sub { font-size: 11.5px; color: var(--graphite); margin-top: 2px; }

/* ---- source metadata: jewelry, not clutter ---- */
.src { font-size: 11px; color: var(--graphite); }
.src .vtick { color: var(--verified); }
.badge-stale { color: var(--amber); font-weight: 600; font-size: 11px; }
.caption { font-size: 12px; color: var(--graphite); margin-top: 6px; }

/* ---- charts ---- */
.chart { width: 100%; height: auto; display: block; }
.chart text.axis { font: 10.5px var(--mono); fill: var(--graphite); }
.chart text.axis.strong { font-weight: 600; fill: var(--ink); font-family: var(--sans); font-size: 12px; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; padding-top: 8px; }
.chart-legend .key { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--graphite); }
.chart-legend .swatch { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.chart-tip {
  position: fixed; display: none; z-index: 50; pointer-events: none;
  background: var(--ink); color: var(--paper); border-radius: 3px; padding: 8px 12px;
  font-size: 12px; max-width: 280px; box-shadow: 0 2px 8px rgba(22,33,28,0.25);
}
.chart-tip strong { display: block; margin-bottom: 3px; font-weight: 600; }
.chart-tip div { display: flex; justify-content: space-between; gap: 14px; }
.chart-tip .num { color: var(--paper); }
.chart-tip .neg { color: #f2b8b5; }
.chart-tip .dim { color: #a9b0ac; }

/* ---- two-way matrix ---- */
.matrix { border-collapse: collapse; width: 100%; }
.matrix th, .matrix td { font-size: 12.5px; padding: 7px 9px; text-align: right; border: 1px solid var(--paper); }
.matrix thead th { color: var(--graphite); font-weight: 600; }
.matrix tbody th { color: var(--graphite); white-space: nowrap; }
.matrix td { white-space: nowrap; }
.overflow { overflow-x: auto; }

/* ---- comparison ---- */
table.compare { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.compare th, table.compare td { padding: 9px 10px 9px 0; border-bottom: 1px solid var(--hairline); text-align: left; vertical-align: top; }
table.compare td.num, table.compare th.num { text-align: right; white-space: nowrap; }
tr.winner td { background: rgba(30,107,78,0.07); }
tr.walkaway td { background: rgba(179,38,30,0.05); }
.robust { font-size: 11px; color: var(--verified); font-weight: 600; }

/* ---- notices ---- */
.notice { border: 1px solid var(--hairline); border-left: 3px solid var(--amber); padding: 10px 14px; font-size: 13.5px; margin: 12px 0; background: #fff; }
.notice.danger { border-left-color: var(--signal); }
.notice.info { border-left-color: var(--graphite); }

.empty { padding: 60px 0; color: var(--graphite); font-size: 16px; font-family: var(--serif); }

footer.site { padding-top: 28px; font-size: 12px; color: var(--graphite); }
footer.site a { color: var(--graphite); }

/* tenants editor */
.tenant-row { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr auto; gap: 8px; margin-bottom: 8px; align-items: end; }
@media (max-width: 620px) { .tenant-row { grid-template-columns: 1fr 1fr; } }

hr.hairline { border: none; border-top: 1px solid var(--hairline); margin: 18px 0; }
.rowflex { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.grow { flex: 1; }