/* Cairn: Words to Keep. Colors follow CairnKit/DesignSystem.swift. */

:root {
  color-scheme: light dark;

  --cream: #F4E6D6;
  --sand: #E6DDD0;
  --text: #2C2A27;
  --text-secondary: #5F5A54;
  --text-tertiary: #9A948C;
  --accent: #8A6F3E;
  --divider: #DDD8D0;
  --surface: rgba(255, 255, 255, 0.35);

  --slate: #6E7273;
  --granite: #8C8780;
  --sandstone: #A8694E;
  --river: #B3ACA1;

  --serif: ui-serif, "New York", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, system-ui, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --cream: #27221D;
    --sand: #1D1A17;
    --text: #EAE7E1;
    --text-secondary: #A7A199;
    --text-tertiary: #6F6A64;
    --accent: #D8BE86;
    --divider: #33302C;
    --surface: rgba(255, 255, 255, 0.04);

    --slate: #8C9192;
    --granite: #A29D95;
    --sandstone: #C98E72;
    --river: #BDB6AB;
  }
}

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

html {
  background: var(--sand);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--cream) 0%, var(--sand) 100%) fixed;
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  animation: fade-in 0.9s ease-in-out both;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  body { animation: none; }
}

main {
  max-width: 38rem;
  margin: 0 auto;
  padding: 5rem 1.5rem 3rem;
}

h1,
h2,
.subtitle {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.25;
}

h1 {
  font-size: 2.5rem;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.375rem;
  margin: 3rem 0 0.75rem;
}

p {
  margin: 0 0 1.25rem;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: opacity 0.4s ease-in-out;
}

a:hover {
  opacity: 0.7;
}

strong {
  font-weight: 600;
}

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

/* The cairn mark */

.mark {
  display: block;
  width: 4.5rem;
  height: auto;
  margin: 0 0 2.5rem;
}

.mark .slate { fill: var(--slate); }
.mark .granite { fill: var(--granite); }
.mark .sandstone { fill: var(--sandstone); }
.mark .river { fill: var(--river); }

a.home-link {
  display: inline-block;
}

a.home-link:hover {
  opacity: 0.8;
}

/* Home */

.home main {
  padding-top: 7rem;
  text-align: center;
}

.home .mark {
  width: 7rem;
  margin: 0 auto 3rem;
}

.home h1 {
  font-size: 3rem;
}

.subtitle {
  font-size: 1.375rem;
  color: var(--text-secondary);
  margin: 0 0 4rem;
}

.lede {
  font-family: var(--serif);
  font-size: 1.3125rem;
  line-height: 1.6;
  margin: 0 auto 3.5rem;
  max-width: 30rem;
}

.features {
  list-style: none;
  padding: 0;
  margin: 0 auto 4rem;
  max-width: 30rem;
  text-align: left;
}

.features li {
  padding: 1.25rem 0;
  border-top: 1px solid var(--divider);
}

.features li:last-child {
  border-bottom: 1px solid var(--divider);
}

.features strong {
  display: block;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.1875rem;
  margin-bottom: 0.25rem;
}

.features span {
  color: var(--text-secondary);
}

.store {
  margin: 0 0 1rem;
}

.coming-soon {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--divider);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
}

.store img {
  height: 3.25rem;
  width: auto;
}

/* Policy and support pages */

.doc h1 {
  margin-bottom: 0.25rem;
}

.doc .updated {
  color: var(--text-tertiary);
  font-size: 0.9375rem;
  margin-bottom: 2.5rem;
}

.doc .question {
  margin-bottom: 0.25rem;
}

/* Footer */

footer {
  max-width: 38rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

footer nav a {
  color: var(--text-secondary);
  margin: 0 0.75rem;
}

footer p {
  margin: 1rem 0 0;
}

@media (max-width: 480px) {
  main { padding-top: 3.5rem; }
  .home main { padding-top: 4.5rem; }
  h1 { font-size: 2.125rem; }
  .home h1 { font-size: 2.5rem; }
  .lede { font-size: 1.1875rem; }
}

/* A shared quote (q.html) */

.shared main {
  text-align: center;
}

.shared .mark {
  width: 4rem;
  margin: 0 auto 3rem;
}

.from {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  margin-bottom: 2rem;
}

.shared-quote {
  margin: 0 auto 4rem;
  max-width: 32rem;
}

.shared-quote blockquote {
  margin: 0;
}

.shared-quote blockquote p {
  font-family: var(--serif);
  font-size: 1.75rem;
  line-height: 1.4;
  white-space: pre-line;
  overflow-wrap: anywhere;
  margin: 0 0 1.25rem;
}

.shared-quote figcaption {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.shared-quote figcaption::before {
  content: "";
  display: inline-block;
  width: 1.25rem;
  height: 1.5px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 0.6rem;
}

.get-cairn {
  max-width: 30rem;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--divider);
}

.get-cairn h2 {
  margin-top: 0;
}

@media (max-width: 480px) {
  .shared-quote blockquote p { font-size: 1.4375rem; }
}

.open-in-cairn {
  margin: -2.5rem auto 4rem;
}

.open-in-cairn .button {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 999px;
  background: var(--text);
  color: var(--cream);
  font-weight: 600;
  text-decoration: none;
}

.open-in-cairn .muted {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.875rem;
}