/* Colours follow the app's theme in src/constants/theme.ts. */
:root {
  --text: #0e1716;
  --text-secondary: #566563;
  --background: #f6f8f7;
  --surface: #ffffff;
  --element: #eaf0ee;
  --border: #d3dedb;
  --accent: #0f766e;
  --accent-soft: #d5efeb;
  --on-accent: #ffffff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #e6eeec;
    --text-secondary: #98aaa7;
    --background: #0a100f;
    --surface: #121a19;
    --element: #1a2423;
    --border: #283735;
    --accent: #3ccfbb;
    --accent-soft: #0f2d2a;
    --on-accent: #04201d;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

img {
  max-width: 100%;
  height: auto;
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

.narrow {
  max-width: 720px;
}

/* Header and footer */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  gap: 18px;
  font-size: 15px;
  font-weight: 600;
}

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

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
}

.site-footer {
  margin-top: 72px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.site-footer nav {
  display: flex;
  gap: 16px;
}

.site-footer a {
  color: var(--text-secondary);
}

/* Home page */

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  padding: 64px 0 24px;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.18);
}

.eyebrow {
  margin: 24px 0 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 28px;
  color: var(--text-secondary);
  font-size: 19px;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 12px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  text-decoration: none;
}

.note {
  color: var(--text-secondary);
  font-size: 15px;
}

.phones {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.phones img {
  width: 48%;
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: 0 12px 32px rgb(0 0 0 / 0.12);
}

.phones img:last-child {
  margin-top: 48px;
}

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin: 40px 0 0;
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.facts div {
  display: flex;
  flex-direction: column;
}

.facts strong {
  font-size: 24px;
}

.facts span {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
}

h2 {
  margin: 64px 0 20px;
  font-size: 30px;
  letter-spacing: -0.01em;
}

.chapters {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: chapter;
}

.chapters li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  counter-increment: chapter;
}

.chapters li::before {
  content: counter(chapter);
  min-width: 22px;
  color: var(--accent);
  font-weight: 800;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.feature {
  padding: 22px;
  border-radius: 16px;
  background: var(--element);
}

.feature h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--text-secondary);
}

.ipad {
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 12px 32px rgb(0 0 0 / 0.1);
}

.disclaimer {
  margin-top: 40px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Text pages: privacy, terms, support */

.doc {
  padding-top: 40px;
}

.doc h1 {
  font-size: clamp(30px, 5vw, 40px);
}

.doc h2 {
  margin: 36px 0 8px;
  font-size: 21px;
}

.doc .updated {
  margin-top: -8px;
  color: var(--text-secondary);
  font-size: 15px;
}

.doc li {
  margin-bottom: 6px;
}

@media (max-width: 760px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 40px;
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav .optional {
    display: none;
  }
}