/**
 * MailContext public site.
 * Brand: docs/decisions/0007-brand-mark-and-ink-plate.md
 */

:root {
  color-scheme: light;
  --ink: #1e3a4c;
  --paper: #f4f7f8;
  --muted: #5f6368;
  --rule: #c5d0d6;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  --measure: 38rem;
  --page: 72rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  hanging-punctuation: first allow-end last;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--ink);
  color: var(--paper);
}

a {
  color: var(--ink);
}

a:hover {
  text-underline-offset: 0.18em;
}

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

.wrap {
  width: min(var(--page), calc(100% - 2.5rem));
  margin-inline: auto;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.35rem;
  border-bottom: 1px solid var(--rule);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img {
  display: block;
  flex: 0 0 auto;
}

.nav {
  display: flex;
  gap: 1.35rem;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
}

.nav a:hover {
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.hero {
  display: grid;
  gap: 2.75rem;
  padding-block: 12vh 4.5rem;
}

.kicker {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 1.15rem;
  font-size: clamp(2.85rem, 9vw, 5.25rem);
  font-weight: 600;
  line-height: 0.92;
  letter-spacing: -0.045em;
}

.lede {
  margin: 0 0 1.85rem;
  max-width: 28rem;
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.45;
  text-wrap: pretty;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1.15rem 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.72em 1.15em;
  border-radius: 4px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.btn:hover {
  color: var(--paper);
  opacity: 0.9;
}

.text-link {
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
}

.sample {
  margin: 0;
  padding: 1.35rem 1.45rem 1.5rem;
  border-radius: 12px;
  background: var(--ink);
  color: var(--paper);
  align-self: end;
}

.sample figcaption {
  margin: 0 0 0.95rem;
  color: #c5d0d6;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sample pre {
  margin: 0;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0;
  tab-size: 2;
  white-space: pre-wrap;
  text-wrap: auto;
}

.sample code {
  font-family: inherit;
}

.steps {
  padding-block: 2.5rem 0.5rem;
  border-top: 1px solid var(--rule);
}

.steps ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 0.75rem;
  padding-block: 0.95rem;
  border-bottom: 1px solid var(--rule);
}

.num {
  color: var(--muted);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.hint {
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: 0.8125rem;
}

.hint code {
  font-family: var(--mono);
  font-size: 0.78em;
}

.facts {
  display: grid;
  gap: 1.75rem;
  padding-block: 2.75rem 3.5rem;
}

.facts h2 {
  margin: 0 0 0.45rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.facts p {
  margin: 0;
  max-width: 22rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.45;
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 1.25rem 2.25rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

.foot a {
  color: var(--muted);
  text-decoration: none;
}

.foot a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.page-title {
  margin: 12vh 0 2rem;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
}

.prose {
  max-width: var(--measure);
  padding-bottom: 4rem;
}

.prose h2 {
  margin: 2.25rem 0 0.7rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.prose p,
.prose li {
  color: var(--ink);
}

.prose p {
  margin: 0 0 0.9rem;
  hyphens: auto;
}

.prose ul {
  margin: 0 0 1rem;
  padding-left: 1.15em;
}

.prose li {
  margin: 0 0 0.35rem;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.84em;
}

.prose table {
  width: 100%;
  margin: 0.4rem 0 1.25rem;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.prose th,
.prose td {
  padding: 0.55rem 0.7rem 0.55rem 0;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

.prose th {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.note {
  max-width: var(--measure);
  margin: 12vh 0 4rem;
}

.note h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
}

.note p {
  margin: 0;
  color: var(--muted);
}

@media (min-width: 880px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 24rem);
    align-items: end;
    gap: 4rem;
  }

  .facts {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .facts > div + div {
    padding-left: 2rem;
    border-left: 1px solid var(--rule);
  }
}

@media (max-width: 879px) {
  .hero {
    padding-block: 8vh 3rem;
  }

  .facts > div + div {
    padding-top: 1.75rem;
    border-top: 1px solid var(--rule);
  }
}