/* CapRail landing — a specimen share certificate, then its reverse: the transfer register.
   Two inks and a seal: ink for text, a ledger green-grey tint for the guilloché and rules,
   the logo's red only for the seal, the refusal stamps and the "not yet" notes. */

:root {
  --ground: #f5f4f0;
  --ground-2: #efeee8;
  --ink: #1c1e1a;
  --muted: #5f635a;
  --tint: #9aa595;
  --rule: #cfd8cc;
  --seal: #c01800;
  --sans: ui-sans-serif, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --engraved: Cinzel, "Trajan Pro", Georgia, serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #161714;
    --ground-2: #1c1d19;
    --ink: #e8e6df;
    --muted: #a4a79e;
    --tint: #5e6858;
    --rule: #33382f;
    --seal: #e0472f;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  font-variant-numeric: tabular-nums lining-nums;
}

a {
  color: var(--ink);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--muted);
}

a:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding-inline: 40px;
}

.engraved {
  font-family: var(--engraved);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.muted {
  color: var(--muted);
}

.mono {
  font-family: var(--mono);
  font-size: 13px;
}

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
  font-size: 16px;
}

.btn:hover {
  background: var(--ink);
  color: var(--ground);
}

.link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 16px;
}

/* ── masthead ─────────────────────────────────────────────────────────────── */

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-block: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 19px;
  letter-spacing: 0.02em;
}

.masthead nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

/* ── obverse: the certificate ─────────────────────────────────────────────── */

.obverse {
  padding-top: 8px;
  padding-bottom: 72px;
}

.cert {
  border: 1px solid var(--tint);
  color: var(--tint);
}

.band {
  display: block;
  width: 100%;
  height: 30px;
}

.cert-in {
  position: relative;
  overflow: hidden;
  margin: 0 30px;
  padding: 44px 56px 40px;
  border-inline: 1px solid var(--tint);
  color: var(--ink);
}

.overprint {
  position: absolute;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%) rotate(-14deg);
  font-size: 168px;
  font-weight: 700;
  color: var(--tint);
  opacity: 0.16;
  white-space: nowrap;
  pointer-events: none;
}

.cert-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding-bottom: 18px;
  border-bottom: 4px double var(--tint);
  margin-bottom: 36px;
}

.cert-head .small {
  font-size: 13px;
}

.cert-head .title {
  font-size: 22px;
  font-weight: 700;
}

.specimen-line {
  margin: 0 0 18px;
  font-size: 14px;
}

h1 {
  margin: 0 0 22px;
  max-width: 900px;
  font-size: 52px;
  line-height: 1.12;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.lede {
  margin: 0 0 40px;
  max-width: 760px;
  font-size: 19px;
}

.legend-title {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
}

.legend {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  column-gap: 40px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.legend li {
  display: contents;
}

.clause,
.note {
  padding-block: 14px;
  border-top: 1px solid var(--rule);
}

.clause {
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  text-transform: uppercase;
}

.note {
  font-size: 14px;
  color: var(--muted);
}

.note > span {
  display: block;
  padding-left: 16px;
  border-left: 1px solid var(--tint);
}

.note.not-yet {
  color: var(--seal);
}

.note.not-yet > span {
  border-left-color: var(--seal);
}

.cert-foot {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 40px;
}

.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.demo-note {
  margin: 16px 0 0;
  max-width: 520px;
  font-size: 14px;
}

.seal {
  position: relative;
  flex: none;
  width: 190px;
  height: 190px;
  color: var(--tint);
}

.seal svg {
  position: absolute;
}

.seal .rosette {
  inset: 0;
}

/* The star of the mark sits on the rosette's centre; the rail runs out to the right. */
.seal .mark {
  left: 67px;
  top: 67px;
  color: var(--ink);
}

/* ── sections ─────────────────────────────────────────────────────────────── */

section {
  padding-bottom: 88px;
}

h2 {
  margin: 0 0 20px;
  font-size: 30px;
  line-height: 1.25;
  font-weight: 400;
}

h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 600;
}

.ruled {
  border-top: 1px solid var(--rule);
  padding-top: 22px;
}

.cols2,
.cols3 {
  display: grid;
  column-gap: 56px;
}

.cols2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cols3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 40px;
}

.cols2 p,
.cols3 p {
  margin: 0;
}

.cols2 .kicker {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--muted);
}

/* ── reverse: the register ───────────────────────────────────────────────── */

.reverse {
  padding: 72px 0 80px;
  margin-bottom: 80px;
  background: var(--ground-2);
  border-block: 1px solid var(--tint);
}

.reverse-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
}

.reverse-sub {
  margin: 0 0 32px;
  max-width: 760px;
}

/* Ledger tables: description columns, the double vertical rule, figures. */
.ledger {
  width: 100%;
  border-collapse: collapse;
}

.ledger th,
.ledger td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
  font-weight: 400;
}

.ledger thead th {
  font-size: 12px;
  color: var(--muted);
  border-bottom-color: var(--tint);
}

.ledger .dr {
  width: 3px;
  padding: 0;
  border-inline: 1px solid var(--tint);
}

.ledger .fig {
  text-align: right;
  white-space: nowrap;
}

.ledger tr.blank td {
  height: 50px;
}

.reg .when {
  width: 96px;
}

.reg .out {
  width: 210px;
}

.reg .sig {
  width: 120px;
}

.stamp {
  display: inline-block;
  padding: 4px 8px;
  border: 1.5px solid var(--seal);
  border-radius: 3px;
  color: var(--seal);
  line-height: 1.2;
  transform: rotate(-4deg);
}

.stamp b {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.stamp i {
  display: block;
  font-size: 11px;
  font-style: normal;
}

.reverse-note {
  margin: 22px 0 0;
  max-width: 820px;
  font-size: 14px;
}

.meas td.value {
  font-size: 18px;
}

.meas .when {
  width: 260px;
}

/* ── limits, questions, footer ───────────────────────────────────────────── */

.limits {
  max-width: 900px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid var(--rule);
}

.limits li {
  padding-block: 14px;
  border-top: 1px solid var(--rule);
}

.limits strong,
dt {
  font-weight: 600;
}

dl.cols2 {
  margin: 0;
  row-gap: 28px;
}

dt {
  margin-bottom: 6px;
}

dd {
  margin: 0;
}

.site-foot {
  border-top: 1px solid var(--tint);
}

.site-foot .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 28px;
  padding-bottom: 40px;
  font-size: 14px;
}

.site-foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

/* ── narrow screens ──────────────────────────────────────────────────────── */

@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  .wrap {
    padding-inline: 16px;
  }

  .masthead nav .link {
    display: none;
  }

  .band {
    height: 16px;
  }

  .cert-in {
    margin: 0 10px;
    padding: 28px 18px;
  }

  .overprint {
    font-size: 64px;
  }

  h1 {
    font-size: 32px;
  }

  .lede {
    font-size: 17px;
  }

  .legend,
  .cols2,
  .cols3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .legend .note {
    border-top: 0;
    padding-top: 0;
  }

  .cols3 > div + div,
  .cols2 > div + div {
    margin-top: 24px;
  }

  .seal {
    width: 120px;
    height: 120px;
  }

  .seal .rosette {
    width: 120px;
    height: 120px;
  }

  .cert-head .title {
    font-size: 17px;
    letter-spacing: 0.08em;
  }

  .seal .mark {
    left: 43px;
    top: 43px;
    width: 60px;
    height: 35px;
  }

  /* Ledger tables stack: one entry per block, label left, value right. */
  .ledger thead {
    display: none;
  }

  .ledger,
  .ledger tbody,
  .ledger tr,
  .ledger td {
    display: block;
    width: auto;
  }

  .ledger tr {
    padding-block: 10px;
    border-bottom: 1px solid var(--rule);
  }

  .ledger td {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 4px 0;
    border: 0;
    text-align: right;
  }

  .ledger td::before {
    content: attr(data-l);
    color: var(--muted);
    font-size: 12px;
    text-align: left;
    flex: none;
  }

  .ledger td.k {
    display: block;
    text-align: left;
  }

  .ledger td.k::before {
    content: none;
  }

  .ledger .dr,
  .ledger tr.blank {
    display: none;
  }

  .ledger .fig {
    white-space: normal;
  }
}