/* compoundcoast — app.css
 * Ported from the approved redesign mockup (cc-redesign-mockup.html).
 *
 * Visual system: light-default, cool off-white ground with a deep-evergreen
 * accent (#0b7a54), a single lime signal, and coral for the downside. Layout
 * paradigm: a sticky, backdrop-blurred top bar + a centered ~760px focus
 * column (the earlier left-rail app-shell is retired). Numbers are always
 * tabular monospace; whitespace is generous (density down, textbook-wall out).
 *
 * Two token layers:
 *   1. The mockup tokens (--bg / --panel / --green / --lime / --coral …) are
 *      the single source of truth, themed light (default) + dark via BOTH
 *      prefers-color-scheme and :root[data-theme].
 *   2. A --co-* ALIAS layer maps the legacy design-system variable names onto
 *      the evergreen tokens so the existing calculator markup, render/*.py
 *      output, and window.COAST charts recolor for free without renaming a
 *      single class or CSS var.
 *
 * No external resources (CSP-safe): system-first font stacks, no @font-face,
 * no @import. No inline styles required by any component here.
 */

/* ============================================================= tokens */

:root {
  /* --- mockup ground + accents (light default) --- */
  --bg:#eef1ec; --panel:#ffffff; --panel-2:#f6f8f4;
  --ink:#0e1a14; --muted:#5c6b62; --faint:#8a978e;
  --line:#e0e5dc; --line-2:#ebefe7;
  --green:#0b7a54; --green-deep:#0a5f43; --green-ink:#0c3d2c;
  --lime:#2bd489; --lime-soft:rgba(43,212,137,.16);
  --band:rgba(11,122,84,.13); --coral:#e2603f; --amber:#e0972a;
  --coral-soft:rgba(226,96,63,.14); --amber-soft:rgba(224,151,42,.16);
  --shadow:0 1px 2px rgba(16,40,28,.05),0 12px 30px -14px rgba(16,40,28,.18);
  --shadow-sm:0 1px 2px rgba(16,40,28,.06);
  --scrim:rgba(16,40,28,.42);

  /* --- geometry --- */
  --r:12px; --r-sm:9px; --r-pill:999px;
  --maxw:760px;

  /* --- type --- */
  --sans:"Inter var","Inter",system-ui,-apple-system,"Segoe UI","Helvetica Neue",Arial,sans-serif;
  --mono:"SF Mono","JetBrains Mono","Roboto Mono",ui-monospace,Menlo,Consolas,monospace;

  /* --- motion --- */
  --co-t:160ms cubic-bezier(.4,0,.2,1);

  color-scheme: light;
}

/* ---- legacy --co-* aliases (map onto the evergreen tokens above) ---- */
:root {
  --co-canvas:var(--bg); --co-surface:var(--panel); --co-surface-2:var(--panel-2);
  --co-inset:var(--panel-2); --co-hairline:var(--line);
  --co-ink:var(--ink); --co-heading:var(--ink); --co-muted:var(--muted); --co-faint:var(--faint);
  --co-link:var(--green); --co-link-hover:var(--green-deep);
  --co-indigo:var(--green); --co-indigo-deep:var(--green); --co-indigo-hover:var(--green-deep);
  --co-aqua:var(--green); --co-mint:var(--lime); --co-coral:var(--coral);
  --co-amber:var(--amber); --co-violet:var(--green-deep);
  --co-focus:var(--green);
  --co-shadow:var(--shadow); --co-shadow-sm:var(--shadow-sm);
  --co-track:var(--line); --co-scrim:var(--scrim);
  --co-tint-indigo:var(--band); --co-tint-aqua:var(--lime-soft); --co-tint-mint:var(--lime-soft);
  --co-tint-coral:var(--coral-soft); --co-tint-amber:var(--amber-soft);
  --co-sans:var(--sans); --co-mono:var(--mono);
  --co-r-panel:var(--r); --co-r-pill:var(--r-pill); --co-r-input:var(--r-sm);
  --co-deck-max:var(--maxw); --co-gap:1.25rem;
}

/* ---- OS-dark (only when the viewer hasn't pinned a theme) ---- */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg:#0a1310; --panel:#111d17; --panel-2:#0e1813;
    --ink:#e8f1ea; --muted:#93a49a; --faint:#63776b;
    --line:#1e2c24; --line-2:#182219;
    --green:#28c98c; --green-deep:#1fa976; --green-ink:#bdead6;
    --lime:#37e694; --lime-soft:rgba(55,230,148,.14);
    --band:rgba(40,201,140,.16); --coral:#ff7a5c; --amber:#f0ad3e;
    --coral-soft:rgba(255,122,92,.16); --amber-soft:rgba(240,173,62,.15);
    --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 40px -18px rgba(0,0,0,.6);
    --shadow-sm:0 1px 2px rgba(0,0,0,.35);
    --scrim:rgba(6,9,20,.6);
  }
}

/* ---- explicit viewer toggle ALWAYS wins (stamped on <html data-theme>) ---- */
:root[data-theme="light"] {
  color-scheme: light;
  --bg:#eef1ec; --panel:#ffffff; --panel-2:#f6f8f4;
  --ink:#0e1a14; --muted:#5c6b62; --faint:#8a978e;
  --line:#e0e5dc; --line-2:#ebefe7;
  --green:#0b7a54; --green-deep:#0a5f43; --green-ink:#0c3d2c;
  --lime:#2bd489; --lime-soft:rgba(43,212,137,.16);
  --band:rgba(11,122,84,.13); --coral:#e2603f; --amber:#e0972a;
  --coral-soft:rgba(226,96,63,.14); --amber-soft:rgba(224,151,42,.16);
  --shadow:0 1px 2px rgba(16,40,28,.05),0 12px 30px -14px rgba(16,40,28,.18);
  --shadow-sm:0 1px 2px rgba(16,40,28,.06);
  --scrim:rgba(16,40,28,.42);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg:#0a1310; --panel:#111d17; --panel-2:#0e1813;
  --ink:#e8f1ea; --muted:#93a49a; --faint:#63776b;
  --line:#1e2c24; --line-2:#182219;
  --green:#28c98c; --green-deep:#1fa976; --green-ink:#bdead6;
  --lime:#37e694; --lime-soft:rgba(55,230,148,.14);
  --band:rgba(40,201,140,.16); --coral:#ff7a5c; --amber:#f0ad3e;
  --coral-soft:rgba(255,122,92,.16); --amber-soft:rgba(240,173,62,.15);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 40px -18px rgba(0,0,0,.6);
  --shadow-sm:0 1px 2px rgba(0,0,0,.35);
  --scrim:rgba(6,9,20,.6);
}

/* ============================================================== reset */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv05","ss01";
}
h1, h2, h3, h4 {
  margin: 0 0 .5em;
  color: var(--ink);
  letter-spacing: -.02em;
  line-height: 1.2;
  text-wrap: balance;
  font-weight: 720;
}
h1 { font-size: clamp(1.55rem, 4vw, 1.9rem); font-weight: 780; letter-spacing: -.03em; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.08rem; }
p  { margin: 0 0 1rem; }
a  { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-deep); text-decoration: underline; }
img, svg, canvas { max-width: 100%; height: auto; }
hr { border: 0; border-top: 1px solid var(--line); margin: 1.6rem 0; }
code, kbd, samp { font-family: var(--mono); }

/* Every number / KPI / badge is tabular mono. */
.num, .mono, .tile-value, .readout-value, .rangebar-scale span, .result-num,
.srcchip, .delta, .stat b, .formula, .stat, [data-num] {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums lining-nums;
  font-feature-settings: "tnum" 1, "lnum" 1;
  letter-spacing: -.01em;
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--green); color: #fff;
  padding: .6rem 1rem; border-radius: 0 0 10px 0;
}
.skip:focus { left: 0; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ==================================== layout: focus column + top bar */

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}
main.wrap {
  display: block;
  padding-top: .25rem;
  padding-bottom: 3.5rem;
  min-height: 60vh;
  /* Container context so calculator grids collapse to the focus column. */
  container: wrapcol / inline-size;
}

/* ---- sticky top bar (backdrop blur) ---- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap {
  display: flex; align-items: center; gap: 14px;
  height: 58px;
}
.brand {
  display: flex; align-items: center; gap: 9px;
  font-weight: 680; letter-spacing: -.02em; font-size: 16.5px;
  color: var(--ink);
}
.brand:hover { text-decoration: none; color: var(--ink); }
.brand .mk { width: 22px; height: 22px; flex: none; }
.brand b { font-weight: 780; }
.brand .cc-a { color: var(--ink); }
.brand .cc-b { color: var(--green); }
.spacer { flex: 1; }

/* ---- top navigation (fed by the NAV_HTML token = the flattened stage rail) ---- */
.topnav, .topbar .railnav-nav {
  display: flex; align-items: center; gap: 2px;
  min-width: 0;
}
.topbar .rail-group { display: contents; }
.topbar .rail-group-head, .topbar .rail-sub { display: none; }
.topnav a, .topbar .rail-link {
  display: inline-flex; align-items: center;
  color: var(--muted); font-size: 14px; font-weight: 560;
  padding: 7px 11px; border-radius: var(--r-pill);
  white-space: nowrap;
  transition: color var(--co-t), background var(--co-t);
}
.topbar .rail-link .rail-ico { display: none; }
.topnav a:hover, .topbar .rail-link:hover { color: var(--ink); background: var(--panel-2); text-decoration: none; }
.topnav a.is-active, .topbar .rail-link.is-active { color: var(--ink); background: var(--panel-2); font-weight: 640; }

/* ---- theme toggle button ---- */
.tgl {
  width: 34px; height: 34px; flex: none;
  border: 1px solid var(--line); border-radius: var(--r-pill);
  background: var(--panel); color: var(--muted);
  cursor: pointer; display: grid; place-items: center;
  transition: color var(--co-t), border-color var(--co-t);
}
.tgl:hover { color: var(--ink); border-color: var(--faint); }
.tgl svg { width: 16px; height: 16px; }
.tgl .ico-sun { display: none; }
.tgl .ico-moon { display: inline; }
:root[data-theme="light"] .tgl .ico-sun, .tgl[data-theme-is="light"] .ico-sun { display: inline; }
:root[data-theme="light"] .tgl .ico-moon, .tgl[data-theme-is="light"] .ico-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .tgl .ico-sun { display: none; }
  :root:not([data-theme]) .tgl .ico-moon { display: inline; }
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .tgl .ico-sun { display: inline; }
  :root:not([data-theme]) .tgl .ico-moon { display: none; }
}

/* ---- wayfinding breadcrumb ---- */
.wayfind {
  padding: .9rem 0 0;
  font-size: .8rem; color: var(--muted); font-family: var(--mono);
}
.wayfind ol { list-style: none; display: flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: 0; }
.wayfind a { color: var(--muted); }
.wayfind a:hover { color: var(--green); }
.wayfind li + li::before { content: "/"; margin-right: .35rem; color: var(--faint); }
.wayfind [aria-current="page"] { color: var(--ink); }

/* ---- context masthead (page title + sub + source/review meta) ---- */
.mast { margin: 1.4rem 0 1.6rem; }
.mast-title { margin: .55rem 0 .5rem; }
.mast-sub { color: var(--muted); max-width: 44rem; margin: 0 0 .85rem; font-size: 1.02rem; }
.mast-meta { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }

/* ============================= mockup: subject-forward ticker header */

.tick { padding: 1.6rem 0 .4rem; }
.tick-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.tick-badge {
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(150deg, var(--green), var(--green-deep));
  color: #fff; font-weight: 800; font-size: 15px; letter-spacing: .01em;
  box-shadow: var(--shadow-sm); font-family: var(--mono);
}
.tick-name h1 { font-size: clamp(23px, 4.4vw, 30px); line-height: 1.08; }
.tick-name p { margin: 3px 0 0; color: var(--muted); font-size: 14.5px; }
.tick-stats { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.stat {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r-pill);
  padding: 6px 12px; font-size: 13px; color: var(--muted);
  display: flex; gap: 6px; align-items: center;
}
.stat b { color: var(--ink); font-weight: 640; font-size: 13.5px; }
.stat.src { color: var(--faint); }
.chips { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 18px; }
.chip {
  border: 1px solid var(--line); background: var(--panel); color: var(--muted);
  border-radius: var(--r-pill); padding: 7px 14px; font-size: 13.5px; font-weight: 600;
  cursor: pointer; font-family: var(--mono); letter-spacing: .01em; transition: .12s;
}
.chip:hover { border-color: var(--green); color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--green); border-color: var(--green); color: #fff; }
.chip small { opacity: .7; font-family: var(--sans); font-weight: 500; margin-left: 5px; }

/* ===================================================== cards & panels */

.card, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
}
.panel { padding: 1.25rem 1.35rem; }
.panel-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: .75rem; margin: 0 0 .9rem;
}
.panel-head h2, .panel-head h3 { margin: 0; }
.panel-note { font-size: .85rem; color: var(--muted); }

/* deck stage heading (calculator hub, grouped by pillar) */
.deck-stage { margin: 1.8rem 0 .3rem; font-size: 1.15rem; }

/* 12-col grid utility */
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--co-gap); }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }

/* Within the ~760px focus column, asymmetric splits stack and card decks
 * go two-up. Container query first (accurate), viewport fallback after. */
@container wrapcol (max-width: 760px) {
  .col-3 { grid-column: span 6; }
  .col-4 { grid-column: span 6; }
  .col-5, .col-6, .col-7, .col-8, .col-9 { grid-column: span 12; }
}
@media (max-width: 820px) {
  .col-3 { grid-column: span 6; }
  .col-4 { grid-column: span 6; }
  .col-5, .col-6, .col-7, .col-8, .col-9 { grid-column: span 12; }
}
@media (max-width: 460px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-3, .col-4 { grid-column: span 6; }
}

/* panel links (deck cards) */
a.panel { display: block; color: inherit; transition: border-color var(--co-t), box-shadow var(--co-t), transform var(--co-t); }
a.panel:hover { text-decoration: none; border-color: var(--green); box-shadow: var(--shadow); transform: translateY(-1px); }
a.panel h3 { margin: .5rem 0 .35rem; }
a.panel.is-current { border-color: var(--green); }

/* ---- KPI stat tile ---- */
.tile {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--r); box-shadow: var(--shadow-sm);
  padding: 1rem 1.1rem 1.05rem;
  display: flex; flex-direction: column; gap: .3rem;
}
.tile-label {
  font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
  letter-spacing: .1em; color: var(--muted);
}
.tile-value {
  font-size: 1.9rem; font-weight: 720; line-height: 1.05;
  color: var(--ink); letter-spacing: -.02em;
}
.tile-value.pos { color: var(--green); }
.tile-value.neg { color: var(--coral); }
.tile-foot { font-size: .78rem; color: var(--muted); }

/* ===================================================== RESULT hero */

.result { padding: 1.4rem 1.4rem .5rem; overflow: hidden; position: relative; }
.result-eyebrow {
  font-size: 12.5px; font-weight: 660; letter-spacing: .06em;
  text-transform: uppercase; color: var(--muted);
}
.result-num {
  font-weight: 720; font-size: clamp(42px, 10vw, 64px);
  line-height: 1; letter-spacing: -.03em; color: var(--ink); margin: 8px 0 6px;
}
.result-num .cur { color: var(--faint); font-size: .5em; vertical-align: .28em; font-weight: 600; margin-right: .06em; }
.result-sub { display: flex; gap: 16px; flex-wrap: wrap; align-items: baseline; color: var(--muted); font-size: 14.5px; }
.result-sub b { color: var(--ink); font-family: var(--mono); font-weight: 640; }

/* delta chip — base is the lime "up" signal; up/down/flat modifiers recolor */
.delta {
  display: inline-flex; align-items: center; gap: 5px;
  font-weight: 660; font-size: 14px;
  padding: 3px 9px; border-radius: var(--r-pill);
  background: var(--lime-soft); color: var(--green-deep);
  border: 1px solid transparent;
  align-self: flex-start;
}
:root[data-theme="dark"] .delta { color: var(--lime); }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .delta { color: var(--lime); } }
.delta.up   { color: var(--green-deep); background: var(--lime-soft); border-color: color-mix(in srgb, var(--lime) 40%, transparent); }
.delta.down { color: var(--coral); background: var(--coral-soft); border-color: color-mix(in srgb, var(--coral) 35%, transparent); }
.delta.flat { color: var(--muted); background: var(--panel-2); }
.delta .arrow { font-family: var(--mono); }
:root[data-theme="dark"] .delta.up { color: var(--lime); }

/* ============================================ mockup growth area chart */

.chartwrap { margin: 18px -1.4rem 0; padding: 0; }
svg.chart { display: block; width: 100%; height: auto; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; padding: 12px 1.4rem 4px; font-size: 12.5px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.swatch { width: 22px; height: 9px; border-radius: 3px; flex: none; }
.sw-med { background: var(--green); }
.sw-band { background: var(--band); border: 1px solid color-mix(in srgb, var(--green) 30%, transparent); }
.sw-inc { width: 22px; height: 0; border-top: 2.5px dashed var(--amber); }

.takeaway {
  margin: 14px 1.4rem 20px; padding: 14px 16px;
  background: var(--panel-2); border-radius: var(--r-sm);
  border-left: 3px solid var(--green); font-size: 15px; line-height: 1.5;
}
.takeaway b { font-family: var(--mono); color: var(--ink); }

/* =============================== percentile range bar (legacy figure) */
.rangebar { margin: .5rem 0 .25rem; }
.rangebar-track {
  position: relative; height: 12px; border-radius: var(--r-pill);
  background: linear-gradient(90deg,
    var(--coral-soft) 0%, var(--line) 28%, var(--line) 72%, var(--lime-soft) 100%);
  border: 1px solid var(--line);
}
.rangebar-band {
  position: absolute; top: -1px; bottom: -1px;
  background: var(--band);
  border: 1px solid color-mix(in srgb, var(--green) 45%, transparent);
  border-radius: 6px;
}
.rangebar-mark {
  position: absolute; top: 50%;
  width: 3px; height: 20px;
  transform: translate(-50%, -50%); border-radius: 2px;
}
.rangebar-mark.p5     { background: var(--coral); }
.rangebar-mark.median { background: var(--green); width: 4px; height: 24px; }
.rangebar-mark.p95    { background: var(--lime); }
.rangebar-mark::after {
  content: attr(data-label);
  position: absolute; top: calc(100% + 4px); left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono); font-variant-numeric: tabular-nums;
  font-size: .68rem; white-space: nowrap; color: var(--muted);
}
.rangebar-mark.median::after { color: var(--ink); }
.rangebar-scale {
  display: flex; justify-content: space-between; margin-top: 2.2rem;
  font-family: var(--mono); font-size: .7rem; color: var(--faint);
}
.rangebar-legend { display: flex; flex-wrap: wrap; gap: .25rem 1rem; margin-top: .75rem; font-size: .74rem; color: var(--muted); }
.rangebar-legend span { display: inline-flex; align-items: center; gap: .35rem; }
.rangebar-legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.rangebar-legend .k-p5 { background: var(--coral); }
.rangebar-legend .k-med { background: var(--green); }
.rangebar-legend .k-p95 { background: var(--lime); }
.rangebar-legend .k-band { background: var(--band); border: 1px solid color-mix(in srgb, var(--green) 40%, transparent); }

/* ============================== distribution / generic SVG charts */
.chartbox { overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
.chartbox svg { display: block; max-width: 100%; height: auto; }
.chart-mount { min-height: 0; }
.chart-cap { font-size: .78rem; color: var(--muted); margin-top: .5rem; }
.chart-axis  { stroke: var(--line); }
.chart-grid  { stroke: var(--line); stroke-opacity: .7; }
.chart-label { fill: var(--muted); font-family: var(--mono); font-size: 10px; }
.chart-s1 { fill: var(--green); stroke: var(--green); }
.chart-s2 { fill: var(--green); stroke: var(--green); }
.chart-s3 { fill: var(--lime);  stroke: var(--lime); }

.spark { display: inline-block; vertical-align: middle; height: 1.1em; }
.spark path { fill: none; stroke: var(--green); stroke-width: 1.5; }

/* ===================================== calculator console (inputs) */

/* legacy: stacked field list inside a panel */
.console { display: flex; flex-direction: column; gap: 1.1rem; }
/* mockup: 2-col field grid inside a single card */
.console-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 18px; }
@container wrapcol (max-width: 520px) { .console-grid { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .console-grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: .4rem; }
.field.wide { grid-column: 1 / -1; }
.field label, .field-label {
  font-size: 12.5px; font-weight: 640; color: var(--muted); letter-spacing: .02em;
}
.field > label { display: flex; justify-content: space-between; align-items: baseline; }
.field-label { font-family: var(--mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.field label .v { font-family: var(--mono); color: var(--green); font-size: 13.5px; font-weight: 660; }
.field-hint { font-size: .78rem; color: var(--faint); }

.input, .select, .textarea {
  font: inherit; font-family: var(--mono); font-variant-numeric: tabular-nums;
  padding: .6rem .7rem; color: var(--ink);
  background: var(--panel-2); border: 1px solid var(--line);
  border-radius: var(--r-sm); min-width: 0;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--green);
  box-shadow: 0 0 0 3px var(--lime-soft);
}

/* mockup money input (leading $) */
.money { position: relative; }
.money input {
  width: 100%; font-family: var(--mono); font-size: 17px; font-weight: 600; color: var(--ink);
  background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: 11px 12px 11px 26px; outline: none;
}
.money::before { content: "$"; position: absolute; left: 12px; top: 11px; color: var(--faint); font-family: var(--mono); font-size: 16px; }
.money input:focus { border-color: var(--green); box-shadow: 0 0 0 3px var(--lime-soft); }

/* range slider (mockup gradient fill via --fill) */
input[type=range], .range {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; border-radius: 99px; outline: none;
  background: linear-gradient(to right, var(--green) var(--fill, 50%), var(--line) var(--fill, 50%));
  accent-color: var(--green); margin: 8px 0 2px;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
  background: var(--panel); border: 2.5px solid var(--green); box-shadow: var(--shadow-sm); cursor: pointer;
}
input[type=range]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--panel); border: 2.5px solid var(--green); cursor: pointer;
}

/* live readout */
.readout {
  display: flex; align-items: baseline; gap: .5rem;
  padding: .5rem .7rem; background: var(--panel-2);
  border: 1px solid var(--line); border-radius: var(--r-sm);
}
.readout-value { font-size: 1.05rem; font-weight: 700; color: var(--ink); }
.readout-label { font-family: var(--mono); font-size: .7rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }

/* ---- segmented control ---- */
/* Legacy markup: <div class="segment"><button class="seg is-on">. The mockup's
 * pill-segmented aesthetic is expressed through these same class names. */
.segment {
  display: inline-flex; padding: 3px;
  background: var(--panel-2); border: 1px solid var(--line);
  border-radius: var(--r-pill); gap: 2px;
}
.segment button, .segment .seg {
  font: inherit; font-size: 13.5px; font-weight: 600;
  color: var(--muted); background: transparent; border: 0; cursor: pointer;
  padding: .4rem .9rem; border-radius: var(--r-pill);
  transition: background var(--co-t), color var(--co-t);
}
.segment button:hover, .segment .seg:hover { color: var(--ink); }
.segment button[aria-pressed="true"], .segment .seg.is-on {
  background: var(--panel); color: var(--green); box-shadow: var(--shadow-sm);
}

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  font: inherit; font-weight: 600; cursor: pointer;
  padding: .6rem 1.2rem; border-radius: var(--r-pill);
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  transition: background var(--co-t), border-color var(--co-t), color var(--co-t);
}
.btn:hover { border-color: var(--green); text-decoration: none; }
.btn-primary { background: var(--green); color: #fff; border-color: transparent; }
.btn-primary:hover { background: var(--green-deep); color: #fff; }
.btn-ghost { background: transparent; }
.btn-sm { padding: .4rem .85rem; font-size: .84rem; }

/* generic pill chip */
.pill {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .2rem .7rem; font-size: .76rem;
  border-radius: var(--r-pill); border: 1px solid var(--line);
  background: var(--panel-2); color: var(--muted);
  font-family: var(--mono); letter-spacing: .01em;
}

/* ---- source / asOf chip ---- */
.srcchip {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .18rem .6rem; font-size: .72rem;
  border-radius: var(--r-pill);
  background: var(--lime-soft); color: var(--green-deep);
  border: 1px solid color-mix(in srgb, var(--green) 30%, transparent);
}
:root[data-theme="dark"] .srcchip { color: var(--lime); }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .srcchip { color: var(--lime); } }
.srcchip.stale { background: var(--amber-soft); color: var(--amber); border-color: color-mix(in srgb, var(--amber) 35%, transparent); }
.srcchip::before { content: "◇"; font-size: .7em; }

/* review / freshness stamp */
.reviewtag {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--mono); font-size: .72rem; color: var(--muted);
  padding: .18rem .6rem; border: 1px dashed var(--line); border-radius: var(--r-pill);
}

/* author byline */
.byline {
  margin: 1.5rem 0; padding: .8rem 0; border-top: 1px solid var(--line);
  font-size: .9rem; color: var(--muted);
}
.byline a { font-weight: 600; }

/* ==================================== assumptions ledger + drawers */
.assump-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.assump-table th, .assump-table td {
  text-align: left; padding: .5rem .65rem;
  border-bottom: 1px solid var(--line); vertical-align: top;
}
.assump-table th {
  font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted); font-weight: 600;
}
.assump-table td.val { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); white-space: nowrap; }
.assump-table .netfee { color: var(--green); font-family: var(--mono); }

/* mockup breakdown table */
table.brk { width: 100%; border-collapse: collapse; font-size: 14px; }
table.brk th, table.brk td { text-align: right; padding: 9px 6px; border-bottom: 1px solid var(--line-2); }
table.brk th:first-child, table.brk td:first-child { text-align: left; color: var(--muted); font-weight: 560; }
table.brk td { font-family: var(--mono); font-variant-numeric: tabular-nums; }
table.brk tr:last-child td { border-bottom: 0; }
.assume { font-size: 13px; color: var(--muted); line-height: 1.6; }
.assume code { font-family: var(--mono); background: var(--panel-2); padding: 1px 6px; border-radius: 5px; color: var(--green-deep); }
:root[data-theme="dark"] .assume code { color: var(--lime); }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .assume code { color: var(--lime); } }

/* collapsible drawer (legacy "show the math") */
.drawer { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--panel); }
.drawer > summary {
  cursor: pointer; list-style: none; padding: .85rem 1.1rem;
  font-weight: 640; color: var(--ink);
  display: flex; align-items: center; justify-content: space-between;
}
.drawer > summary::-webkit-details-marker { display: none; }
.drawer > summary::after { content: "+"; font-family: var(--mono); color: var(--muted); }
.drawer[open] > summary::after { content: "\2013"; }
.drawer > summary:hover { background: var(--panel-2); }
.drawer-body { padding: 1rem 1.1rem; border-top: 1px solid var(--line); }

/* mockup disclosure */
details.disc { border: 1px solid var(--line); border-radius: var(--r); background: var(--panel); margin-top: 12px; }
details.disc > summary {
  cursor: pointer; list-style: none; padding: 15px 18px; font-weight: 640; font-size: 14.5px;
  display: flex; justify-content: space-between; align-items: center; color: var(--ink);
}
details.disc > summary::-webkit-details-marker { display: none; }
details.disc > summary .caret { color: var(--faint); transition: .2s; }
details.disc[open] > summary .caret { transform: rotate(90deg); }
.disc-body { padding: 0 18px 18px; }

/* ---- formula block (mono code panel) ---- */
.formula {
  background: var(--panel-2); border: 1px solid var(--line);
  border-left: 3px solid var(--green); border-radius: var(--r-sm);
  padding: .8rem 1rem; font-size: .85rem; line-height: 1.6;
  color: var(--ink); overflow-x: auto;
}
.formula .tok-var { color: var(--green); }
.formula .tok-num { color: var(--green-deep); }
.formula .tok-fn  { color: var(--amber); }
.formula .tok-cmt { color: var(--faint); }
:root[data-theme="dark"] .formula .tok-num { color: var(--lime); }

/* ---- callouts (not-advice, reviewed-by, info/warn) ---- */
.callout {
  border: 1px solid var(--line); border-radius: var(--r);
  padding: .9rem 1.1rem; font-size: .9rem; background: var(--panel);
}
.callout-info { background: var(--band); border-color: color-mix(in srgb, var(--green) 30%, transparent); }
.callout-warn { background: var(--amber-soft); border-color: color-mix(in srgb, var(--amber) 35%, transparent); }
.callout-head { font-weight: 700; color: var(--ink); margin: 0 0 .25rem; }

/* ---- methodology source-trail table ---- */
.sources { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.sourcetrail { width: 100%; min-width: 40rem; border-collapse: collapse; font-size: .85rem; }
.sourcetrail thead th {
  position: sticky; top: 0; z-index: 1; background: var(--panel-2);
  font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted); text-align: left;
  padding: .55rem .7rem; border-bottom: 1px solid var(--line);
}
.sourcetrail td { padding: .55rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.sourcetrail td.mono, .sourcetrail td .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---- see-also / related ---- */
.seealso { margin-top: 2rem; }
.seealso-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.seealso-list a { font-weight: 600; }
.seealso-list p { margin: .15rem 0 0; font-size: .82rem; color: var(--muted); }

/* ---- prose (guides / policy long-form) ---- */
.copy { max-width: 44rem; }
.copy > * + * { margin-top: 1rem; }
.copy h2 { margin-top: 2rem; }
.copy h3 { margin-top: 1.5rem; }
.copy ul, .copy ol { padding-left: 1.3rem; }
.copy li + li { margin-top: .35rem; }
.copy table { width: 100%; border-collapse: collapse; font-size: .9rem; display: block; overflow-x: auto; }
.copy th, .copy td { border: 1px solid var(--line); padding: .5rem .7rem; text-align: left; }
.copy th { background: var(--panel-2); }
.copy code { background: var(--panel-2); padding: .1rem .35rem; border-radius: 5px; font-size: .88em; }

/* skeleton (loading placeholder) */
.skeleton {
  background: linear-gradient(90deg, var(--line) 25%, var(--panel-2) 37%, var(--line) 63%);
  background-size: 400% 100%; border-radius: 8px;
  animation: co-shimmer 1.4s ease-in-out infinite;
}
@keyframes co-shimmer { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

.note { color: var(--faint); font-size: 11.5px; margin-top: 4px; }
.more { margin: 16px 0 10px; }

/* ================================================================ footer */
.foot {
  margin-top: 2rem;
  background: var(--panel);
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.5rem;
  font-size: .88rem; color: var(--muted);
}
.foot-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 1.5rem; }
.foot-col { min-width: 0; }
.foot-wordmark { display: flex; align-items: center; gap: .5rem; font-weight: 780; letter-spacing: -.02em; color: var(--ink); margin: 0 0 .4rem; }
.foot-wordmark svg { width: 22px; height: 22px; }
.foot-wordmark svg path { stroke: var(--green); }
.foot-tag { margin: 0 0 .6rem; color: var(--muted); }
.foot-head { font-family: var(--mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .12em; color: var(--faint); margin: 0 0 .55rem; }
.foot-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.foot-list a { color: var(--muted); }
.foot-list a:hover { color: var(--green); }
.foot-legal { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .8rem; color: var(--faint); }
.foot-legal p { margin: .25rem 0; }

/* legacy theme toggle (kept for any residual markup) */
.themetoggle {
  display: inline-flex; align-items: center; gap: .45rem;
  font: inherit; font-size: .82rem; font-weight: 600; cursor: pointer;
  padding: .4rem .7rem; border-radius: var(--r-pill);
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
}
.themetoggle:hover { border-color: var(--green); }
.themetoggle .ico-sun { display: none; }
.themetoggle .ico-moon { display: inline; }
:root[data-theme="light"] .themetoggle .ico-sun, .themetoggle[data-theme-is="light"] .ico-sun { display: inline; }
:root[data-theme="light"] .themetoggle .ico-moon, .themetoggle[data-theme-is="light"] .ico-moon { display: none; }

/* ========================================================= embed mode */
/* ?embed=1 — core.js stamps body.is-embed so a calculator page can live
 * inside a sandboxed iframe. Strips the top bar, breadcrumb, and footer;
 * the content, disclaimers, bylines, and source chips stay. */
body.is-embed .topbar,
body.is-embed .wayfind,
body.is-embed .foot { display: none !important; }
body.is-embed main.wrap { padding-top: 1rem; }

/* ======================================================= reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .skeleton { animation: none; }
}

/* =========================================================== responsive */
@media (max-width: 620px) {
  .topbar .wrap { gap: 8px; }
  /* keep nav reachable: let it scroll horizontally rather than vanish */
  .topbar .railnav-nav, .topnav {
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none; flex: 1 1 auto;
  }
  .topbar .railnav-nav::-webkit-scrollbar, .topnav::-webkit-scrollbar { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 400px) {
  .foot-grid { grid-template-columns: 1fr; }
}
