/* Penna brand-aligned static-site CSS.
   Color palette + typography pulled from Penna's app theme so the
   web pages, the App Store / Play Store screenshots, and the running
   app all read as the same product. */

:root {
  --ink: #1C1B2E;
  --accent: #095FCA;
  --accent-soft: #D5E2F7;
  --surface: #FFFFFF;
  --surface-alt: #F1F1F4;
  --muted: #8B8799;
  --outline: #E3E3E8;
  --max: 760px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: 'Merriweather Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  color: var(--ink);
  background: var(--surface);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ─── Header ──────────────────────────────────────────────── */

header {
  padding: 20px 32px;
  border-bottom: 1px solid var(--outline);
}

header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

header .brand img {
  height: 32px;
  width: auto;
}

header .brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.4px;
}

/* ─── Main content variants ───────────────────────────────── */

main {
  flex: 1;
  width: 100%;
  margin: 0 auto;
}

main.hero {
  max-width: 760px;
  padding: 96px 32px 64px;
  text-align: center;
}

main.hero h1 {
  font-size: clamp(34px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

main.hero .lede {
  font-size: 18px;
  color: var(--muted);
  max-width: 540px;
  margin: 0 auto 36px;
}

main.hero .badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 12px 24px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.2px;
}

main.doc {
  max-width: var(--max);
  padding: 48px 32px 96px;
}

main.doc h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 6px;
}

main.doc .updated {
  color: var(--muted);
  font-style: italic;
  margin-bottom: 32px;
  font-size: 14px;
}

main.doc h2 {
  font-size: 20px;
  font-weight: 700;
  margin: 36px 0 12px;
  letter-spacing: -0.2px;
}

main.doc h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 24px 0 10px;
}

main.doc p,
main.doc ul,
main.doc table {
  margin-bottom: 14px;
  font-size: 16px;
}

main.doc ul { padding-left: 24px; }
main.doc li { margin-bottom: 8px; }

main.doc strong { font-weight: 700; }

main.doc a { text-decoration: underline; }

main.doc table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
}

main.doc th,
main.doc td {
  border: 1px solid var(--outline);
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
}

main.doc th {
  background: var(--surface-alt);
  font-weight: 600;
}

/* ─── Footer ──────────────────────────────────────────────── */

footer {
  padding: 24px 32px 32px;
  border-top: 1px solid var(--outline);
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}

footer nav a {
  color: var(--muted);
  text-decoration: underline;
  margin: 0 8px;
}

footer .copyright {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.2px;
}