/* RDA sample-size calculator — app styles. Tokens come from assets/tokens/*. */

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--surface);
  font-size: var(--fs-body-lg, 19px);
  line-height: var(--lh-relaxed, 1.6);
  -webkit-font-smoothing: antialiased;
}

/* ---- Link floor ----
   Every link colour in this sheet is scoped to a component (.seealso a, and
   friends). Nothing sets a colour on a bare `a`, so a link that no component
   happens to name falls through to the browser's own stylesheet: #0000EE, and
   #551A8B once it has been clicked. Nothing in the shipped markup lands there
   today — but this app writes anchors from JS, and the identical gap on the
   main site was rendering browser-blue links on 59 of its pages, the visited
   ones flipping hue hard enough to lose your place in a list.

   A floor, not a component style: at 0-0-1 it is the weakest selector that can
   exist, so every rule below still wins. `color` only — adding text-decoration
   here would reach past the fall-through links into components that leave
   decoration to the UA sheet. And an author `color` on `a` is itself what
   disables the UA :visited purple, so there is no :visited rule to write. Do
   not add a blanket `a:visited`: at 0-1-1 it would outrank the component rules
   and repaint links the moment a reader clicked them.

   .cta and .headline are the dark surfaces; the light floor measures 2.25:1 on
   #152D49, so unclaimed links there take white (13.97:1) instead. :not([class])
   keeps both floors off any link a component has already claimed.

   This block is byte-identical in all six tools — keep it that way. */
a { color: var(--rda-red-dark); }
.cta a:not([class]),
.headline a:not([class]) { color: var(--ink-on-dark, #fff); }
em { font-style: normal; font-weight: 500; }
.eyebrow {
  font-size: var(--fs-eyebrow, 13px); font-weight: 600;
  letter-spacing: var(--ls-eyebrow, 0.12em); text-transform: uppercase;
  color: var(--rda-red); margin: 0 0 8px;
}

/* ---- app bar ---- */
.appbar { border-bottom: 1px solid var(--rule); background: var(--surface); }
.appbar-inner {
  max-width: 1180px; margin: 0 auto; padding: 18px var(--gutter, 32px);
  display: flex; align-items: center; gap: 16px;
}
.brand { display: inline-flex; }
.brand img { display: block; }
.appbar-tag {
  font-size: var(--fs-sm, 15px); color: var(--ink-muted);
  border-left: 1px solid var(--rule-blue); padding-left: 16px; margin-left: 4px;
}

/* ---- layout ---- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 40px var(--gutter, 32px) 80px; }
.lede { max-width: 720px; margin-bottom: 28px; }
.lede h1 {
  font-size: clamp(34px, 5vw, 52px); line-height: 1.05; font-weight: 600;
  letter-spacing: -0.02em; margin: 0 0 16px;
}
.lede .deck { font-size: var(--fs-lead, 22px); color: var(--ink-muted); margin: 0; }

/* ---- tabs ---- */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; border-bottom: 1px solid var(--rule); padding-bottom: 0; }
.tab {
  appearance: none; border: 1px solid transparent; border-bottom: none; background: transparent;
  font-family: inherit; cursor: pointer; padding: 12px 18px; border-radius: 10px 10px 0 0;
  color: var(--ink-muted); display: inline-flex; flex-direction: column; gap: 2px; align-items: flex-start;
  position: relative; top: 1px; transition: background .18s, color .18s;
}
.tab:hover { color: var(--ink); background: var(--surface-panel); }
.tab.on { color: var(--ink); background: var(--surface); border-color: var(--rule); }
.tab.on::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--rda-red); border-radius: 3px 3px 0 0; }
.tab-label { font-size: var(--fs-body, 16px); font-weight: 600; letter-spacing: -0.01em; }
.tab-tag { font-size: 11px; color: var(--ink-faint); letter-spacing: 0.04em; }
.tab.locked .tab-tag, .tab.accent .tab-tag { color: var(--rda-red); font-weight: 600; }

/* ---- grid ---- */
.grid { display: grid; grid-template-columns: 380px 1fr; gap: 24px; align-items: start; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius-lg, 10px);
  padding: 22px 22px 24px; box-shadow: var(--shadow-xs);
}
.card-head { margin-bottom: 12px; }
.card-head .eyebrow { margin: 0; }

/* ---- inputs ---- */
.inputs { position: sticky; top: 16px; }
.solvefor { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 18px; }
.solve-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-faint); margin-right: 4px; width: 100%; }
.seg {
  appearance: none; font-family: inherit; cursor: pointer; font-size: 13px; font-weight: 500;
  padding: 7px 12px; border-radius: var(--radius-sm, 4px); border: 1px solid var(--rule-blue);
  background: var(--surface); color: var(--ink-soft); transition: .15s;
}
.seg:hover { border-color: var(--rda-red); color: var(--rda-red); }
.seg.on { background: var(--rda-navy); border-color: var(--rda-navy); color: #fff; }

.field { margin-bottom: 16px; }
.field-label { display: block; font-size: var(--fs-sm, 15px); font-weight: 500; color: var(--ink-soft); margin-bottom: 6px; }
.field-input { display: block; }
.input {
  width: 100%; font-family: inherit; font-size: var(--fs-sm, 15px); color: var(--ink);
  padding: 10px 12px; border: 1px solid var(--rule-blue); border-radius: var(--radius-sm, 4px);
  background: var(--surface); transition: border-color .15s; -moz-appearance: textfield;
}
select.input { cursor: pointer; }
.input:focus { outline: none; border-color: var(--rda-red); }

/* brand-skinned range slider */
.slider { width: 100%; margin: 10px 0 2px; -webkit-appearance: none; appearance: none; height: 4px; border-radius: 4px;
  background: var(--surface-blue); outline: none; }
.slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: var(--rda-red); cursor: pointer; border: 2px solid #fff; box-shadow: var(--shadow-xs); }
.slider::-moz-range-thumb { width: 16px; height: 16px; border-radius: 50%; background: var(--rda-red);
  cursor: pointer; border: 2px solid #fff; }
.note { font-size: 13px; color: var(--ink-faint); margin: 6px 0 0; }

/* ---- results ---- */
.results { display: grid; gap: 18px; }
.headline { background: linear-gradient(180deg, var(--surface), var(--surface-panel)); }
.bignum {
  font-family: var(--font-mono); font-size: clamp(40px, 7vw, 64px); font-weight: 600;
  color: var(--ink); line-height: 1; letter-spacing: -0.02em; display: flex; align-items: baseline; gap: 12px;
}
.bignum-unit { font-family: var(--font-sans); font-size: 16px; font-weight: 500; color: var(--ink-muted); letter-spacing: 0; }
.headline .sub { margin: 12px 0 0; font-size: var(--fs-sm, 15px); color: var(--ink-muted); }
.err { color: var(--rda-red); margin: 0; }

/* ---- chart ---- */
.curve { width: 100%; height: auto; display: block; }
.ch-frame { fill: none; stroke: var(--rule); }
.ch-grid { stroke: var(--rule); stroke-width: 1; }
.ch-tick { fill: var(--ink-faint); font-size: 11px; font-family: var(--font-mono); }
.ch-tick-y { text-anchor: end; }
.ch-tick-x { text-anchor: middle; }
.ch-axis { fill: var(--ink-muted); font-size: 12px; text-anchor: middle; font-family: var(--font-sans); }
.ch-line { fill: none; stroke: var(--rda-blue); stroke-width: 2.5; stroke-linejoin: round; }
.ch-line2 { fill: none; stroke: var(--ink-muted); stroke-width: 1.6; stroke-dasharray: 5 4; stroke-linejoin: round; }
.ch-line3 { fill: none; stroke: #1c7c4a; stroke-width: 2; stroke-linejoin: round; }
.ch-true { fill: none; stroke: var(--rda-red); stroke-width: 2.5; stroke-linejoin: round; }
.ch-ref { stroke: var(--rule-blue); stroke-width: 1; stroke-dasharray: 3 3; }
.ch-guide { stroke: var(--rda-red); stroke-width: 1; stroke-dasharray: 4 3; opacity: .8; }
.ch-point { fill: var(--rda-red); stroke: #fff; stroke-width: 2; }
.ch-legend { fill: var(--ink-muted); font-size: 11px; font-family: var(--font-sans); }

/* ---- reproduce code + methods text ---- */
.methodstext, .repro { padding: 0; }   /* zero the card default so summaries align with Assumptions */
.methodstext > summary, .repro > summary {
  cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: var(--fs-sm, 15px);
  color: var(--ink-soft); list-style: none;
}
.methodstext > summary::-webkit-details-marker, .repro > summary::-webkit-details-marker { display: none; }
.methodstext > summary::before, .repro > summary::before { content: "+ "; color: var(--rda-red); font-weight: 700; }
.methodstext[open] > summary::before, .repro[open] > summary::before { content: "– "; }
.mt-body { padding: 0 22px 20px; }
.mt-body p { font-size: var(--fs-sm, 15px); color: var(--ink-soft); line-height: 1.6; margin: 0 0 14px; }
.repro-body { padding: 0 22px 20px; }
.repro-bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.repro-tabs { display: inline-flex; gap: 4px; }
.rtab {
  appearance: none; font-family: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
  padding: 6px 14px; border: 1px solid var(--rule-blue); background: var(--surface); color: var(--ink-soft);
  border-radius: var(--radius-sm, 4px);
}
.rtab.on { background: var(--rda-navy); border-color: var(--rda-navy); color: #fff; }
.repro-pre {
  margin: 0; background: var(--surface-dark); color: #e7ecf3; border-radius: var(--radius-md, 8px);
  padding: 16px 18px; overflow-x: auto; font-family: var(--font-mono); font-size: 12.5px; line-height: 1.55;
}
.repro-pre code { font-family: inherit; white-space: pre; }
.action.ghost.mt-copy, .action.ghost.repro-copy { font-size: 12px; padding: 7px 14px; }

/* ---- merlin showcase ---- */
.merlin-badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
  letter-spacing: 0.04em; color: var(--rda-red); background: var(--accent-tint);
  border: 1px solid var(--rule-blue); border-radius: var(--radius-pill, 999px); padding: 6px 14px;
}
.baseline-spark { width: 100%; max-width: 320px; height: auto; display: block; margin: 8px 0 2px; }
.scenario-seg { display: flex; gap: 6px; flex-wrap: wrap; }
.scenario-seg .seg { flex: 1; min-width: 120px; text-align: center; }

/* ---- table ---- */
.sstable table { width: 100%; border-collapse: collapse; font-size: 14px; }
.sstable th, .sstable td { padding: 8px 10px; text-align: right; border-bottom: 1px solid var(--rule); }
.sstable thead th { color: var(--ink-faint); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.sstable tbody th { text-align: left; color: var(--ink-soft); font-weight: 600; font-family: var(--font-mono); }
.sstable td { font-family: var(--font-mono); color: var(--ink); }
.sstable tbody tr:hover td, .sstable tbody tr:hover th { background: var(--surface-panel); }
.table-unit { font-size: 12px; color: var(--ink-faint); margin: 8px 0 0; }

/* ---- assumptions ---- */
.assumptions { padding: 0; }
.assumptions > summary {
  cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: var(--fs-sm, 15px); color: var(--ink-soft);
  list-style: none;
}
.assumptions > summary::-webkit-details-marker { display: none; }
.assumptions > summary::before { content: "+ "; color: var(--rda-red); font-weight: 700; }
.assumptions[open] > summary::before { content: "– "; }
.assumptions #assumptions { padding: 0 22px 20px; }
.assumptions ul { margin: 0 0 12px; padding-left: 18px; }
.assumptions li { font-size: 14px; color: var(--ink-soft); margin-bottom: 4px; }
.assumptions .formula { font-size: 13px; color: var(--ink-muted); background: var(--surface-panel); border-left: 3px solid var(--rule-blue); padding: 10px 12px; border-radius: 4px; margin: 0 0 10px; }
.assumptions .ref { font-size: 12px; color: var(--ink-faint); margin: 0; }
.locked-blurb { font-size: var(--fs-sm, 15px); color: var(--ink-soft); line-height: 1.55; }

/* ---- CTA ---- */
.cta {
  margin-top: 32px; background: var(--surface-dark); color: #fff; border-radius: var(--radius-xl, 14px);
  padding: 32px 36px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cta .eyebrow { color: #fff; opacity: .7; }
.cta h2 { margin: 0 0 8px; font-size: 26px; font-weight: 600; letter-spacing: -0.01em; }
.cta p { margin: 0; color: var(--ink-on-dark-soft); font-size: var(--fs-sm, 15px); max-width: 620px; }
.cta em { color: #fff; }
.btn {
  display: inline-block; background: var(--rda-red); color: #fff; text-decoration: none; font-weight: 600;
  font-size: var(--fs-sm, 15px); padding: 13px 24px; border-radius: var(--radius-sm, 4px); white-space: nowrap;
  transition: background .15s, transform .15s;
}
.btn:hover { background: var(--rda-red-dark); transform: translateY(-1px); }

/* The see-also row shipped as markup with no rules behind it: the calculator carries
   class="seealso" and class="seealso-sep" like the other five tools, but calc.css never
   gained the block, so the row rendered as 19px --ink body copy with underlined links
   while everywhere else it is a 15px --ink-muted line of red, unlaid links. Copied
   verbatim from km.css so all six read the same. */
.seealso { margin-top: 22px; font-size: var(--fs-sm, 15px); color: var(--ink-muted); }
.seealso a { color: var(--rda-red); text-decoration: none; font-weight: 500; } .seealso a:hover { text-decoration: underline; }
.seealso-sep { color: var(--rule-blue); margin: 0 6px; }

.disclaimer { margin-top: 28px; font-size: 12.5px; color: var(--ink-faint); max-width: 760px; }

/* ---- results action bar ---- */
.actions { display: flex; gap: 10px; flex-wrap: wrap; }
.action {
  appearance: none; font-family: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  padding: 10px 18px; border-radius: var(--radius-sm, 4px); border: 1px solid var(--rda-red);
  background: var(--rda-red); color: #fff; transition: background .15s, transform .15s, border-color .15s, color .15s;
}
.action:hover { background: var(--rda-red-dark); transform: translateY(-1px); }
.action.ghost { background: var(--surface); color: var(--ink-soft); border-color: var(--rule-blue); }
.action.ghost:hover { background: var(--surface-panel); color: var(--rda-red); border-color: var(--rda-red); }

/* ---- email modal ---- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(21, 45, 73, 0.55); display: flex; align-items: center;
  justify-content: center; z-index: 100; padding: 20px;
}
.modal {
  background: var(--surface); border-radius: var(--radius-xl, 14px); padding: 32px 32px 26px; max-width: 480px;
  width: 100%; position: relative; box-shadow: var(--shadow-lg);
}
.modal-x { position: absolute; top: 14px; right: 16px; border: none; background: none; font-size: 26px; line-height: 1;
  color: var(--ink-faint); cursor: pointer; }
.modal-x:hover { color: var(--ink); }
.modal-h { margin: 4px 0 10px; font-size: 24px; font-weight: 600; letter-spacing: -0.01em; }
.modal-p { margin: 0 0 18px; font-size: var(--fs-sm, 15px); color: var(--ink-muted); }
.modal-form { display: flex; flex-direction: column; gap: 14px; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; color: var(--ink-soft); line-height: 1.4; cursor: pointer; }
.consent input { margin-top: 3px; accent-color: var(--rda-red); }
.modal-msg { font-size: 13px; color: var(--ink-muted); }
.modal-msg.err { color: var(--rda-red); }
.modal-msg.ok { color: #1c7c4a; }
.modal-form .btn { border: none; cursor: pointer; align-self: flex-start; }
.modal-fine { font-size: 12px; color: var(--ink-faint); margin: 14px 0 0; }

/* ---- embed mode (?embed=1) ---- */
body.embed .appbar, body.embed .lede, body.embed .cta, body.embed .disclaimer { display: none; }
body.embed .wrap { padding-top: 18px; }
body.embed .inputs { position: static; }

/* ---- print / PDF report ---- */
#print-report { display: none; }
@media print {
  body > *:not(#print-report), .modal-overlay { display: none !important; }
  #print-report { display: block; color: #111; font-family: var(--font-sans); padding: 0; }
  .pr-head { display: flex; align-items: center; justify-content: space-between; border-bottom: 2px solid var(--rda-red); padding-bottom: 12px; }
  .pr-date { font-size: 12px; color: #555; }
  .pr-title { font-size: 26px; font-weight: 600; margin: 20px 0 4px; letter-spacing: -0.01em; }
  .pr-sub { font-size: 13px; color: #555; margin: 0 0 18px; text-transform: uppercase; letter-spacing: 0.08em; }
  .pr-result { background: #f4f7fb; border-left: 4px solid var(--rda-red); padding: 16px 18px; border-radius: 6px; margin-bottom: 20px; }
  .pr-big { font-family: var(--font-mono); font-size: 38px; font-weight: 600; }
  .pr-big span { font-family: var(--font-sans); font-size: 15px; color: #555; }
  .pr-resub { font-size: 13px; color: #444; margin-top: 6px; }
  .pr-h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--rda-red); margin: 18px 0 8px; }
  .pr-list { margin: 0; padding-left: 18px; }
  .pr-list li { font-size: 13px; margin-bottom: 4px; }
  .pr-formula { font-size: 12.5px; background: #f4f7fb; padding: 10px 12px; border-radius: 4px; margin: 0 0 8px; }
  .pr-ref { font-size: 12px; color: #555; margin: 0; }
  .pr-table { width: 100%; border-collapse: collapse; font-size: 12px; margin-top: 6px; }
  .pr-table th, .pr-table td { border-bottom: 1px solid #ddd; padding: 6px 8px; text-align: right; }
  .pr-table thead th { color: #555; }
  .pr-table tbody th { text-align: left; font-family: var(--font-mono); }
  .pr-table td { font-family: var(--font-mono); }
  .pr-cap { font-size: 11px; color: #777; margin: 6px 0 0; }
  .pr-foot { margin-top: 26px; padding-top: 12px; border-top: 1px solid #ddd; font-size: 11px; color: #777; }
}

/* ---- Skip link. Every generated page on reddooranalytics.se has one; these six standalone
   apps did not, so a keyboard user had to tab the whole control panel to reach the content.
   Same geometry and tokens as the site's own rule so it behaves identically. ---- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -120px;
  z-index: 200;
  background: var(--rda-navy, #152D49);
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 6px;
  text-decoration: none;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 16px; outline: 2px solid var(--rda-red, #FA0036); outline-offset: 2px; }