/* Ponderanda — the static front.
 *
 * The palette is Paper, taken verbatim from lib/ui/tokens.dart. A visitor who
 * installs the app should recognise the surface they arrived from.
 *
 * ⚠️ NO THIRD-PARTY REQUESTS FROM THIS PAGE, EVER. The serif is self-hosted for
 * the same reason the app bundles it rather than fetching it: a page that
 * promises nothing leaves your device should not open by calling Google. A
 * German court has already held that passing an IP to fonts.gstatic.com without
 * consent is a GDPR problem, and the privacy policy is served from this very
 * stylesheet. No CDN, no analytics, no embeds.
 */

@font-face {
  font-family: 'IBM Plex Serif';
  src: url('fonts/IBMPlexSerif-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  /* PonderColors.light */
  --bg: #E9E6DF;
  --ink: #262420;
  --muted: #6B665C;
  --line: #D3CEC3;
  --card: #F4F2ED;
  --brass: #846A35;
  --weighed: #5D5850;
  --empty: #D3CEC3;

  --serif: 'IBM Plex Serif', Georgia, 'Times New Roman', serif;
  /* The body face is a system stack on purpose: shipping a second 200KB TTF to
   * render paragraphs is a page-weight cost with no brand return. The serif
   * carries the identity; the sans just has to be quiet and legible. */
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  --measure: 34rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* PonderColors.dark — drawn, not inverted. Brass is dimmed here so it does
     * not glow; see the note in tokens.dart. */
    --bg: #15171A;
    --ink: #CFCAC0;
    --muted: #868079;
    --line: #2A2E34;
    --card: #20242A;
    --brass: #93815B;
    --weighed: #8A857C;
    --empty: #2A2E34;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- header ------------------------------------------------------------- */

header {
  padding: 2rem 0 0;
}

.lockup {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
  width: fit-content;
}

/* The mark is drawn to its own tight bounds, not the icon's 1024 box — that box
 * is mostly the padding an adaptive icon needs, and beside a word it would read
 * as a large gap with a small mark floating in it. Same reasoning as the
 * Android widget lockup. */
.mark {
  width: 1.75rem;
  height: auto;
  fill: currentColor;
  flex: none;
}

.wordmark {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
}

/* ---- type --------------------------------------------------------------- */

h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2rem, 6vw, 2.9rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  max-width: var(--measure);
}

h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.35rem;
  line-height: 1.3;
  margin: 2.75rem 0 0.75rem;
}

h3 {
  font-size: 1rem;
  font-weight: 500;
  margin: 1.75rem 0 0.4rem;
}

p { max-width: var(--measure); margin: 0 0 1rem; }

.lede {
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--ink);
}

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

.small { font-size: 0.9375rem; line-height: 1.6; }

a { color: var(--brass); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

ul { max-width: var(--measure); padding-left: 1.1rem; }
li { margin-bottom: 0.5rem; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 3rem 0;
}

/* ---- the ladder signature ----------------------------------------------- */

/* Marks of increasing width resting on a beam — the same balance the icon is
 * built from, and the signature the home-screen widget uses. */
.ladder {
  margin: 2.5rem 0 3rem;
  width: 100%;
  max-width: 20rem;
  height: auto;
}

/* ---- sections ----------------------------------------------------------- */

main { padding: 3.5rem 0 0; }

.points {
  display: grid;
  gap: 1.75rem;
  margin: 2rem 0 0;
  grid-template-columns: 1fr;
}

@media (min-width: 40rem) {
  .points { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
}

.point h3 { margin-top: 0; }
.point p { font-size: 0.9375rem; line-height: 1.6; color: var(--muted); margin: 0; }

.note {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem 1.4rem;
  margin: 2rem 0;
  max-width: var(--measure);
}
.note p:last-child { margin-bottom: 0; }

footer {
  margin-top: 4rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9375rem;
}
footer a { color: var(--muted); }
footer nav { display: flex; gap: 1.25rem; flex-wrap: wrap; margin-bottom: 0.75rem; }

/* ---- the policy --------------------------------------------------------- */

.policy { padding-top: 2.5rem; }
.policy h2 { margin-top: 2.5rem; }
.policy p, .policy li { max-width: 38rem; }
.policy table {
  border-collapse: collapse;
  width: 100%;
  max-width: 38rem;
  margin: 1rem 0 1.5rem;
  font-size: 0.9375rem;
}
.policy th, .policy td {
  text-align: left;
  vertical-align: top;
  padding: 0.6rem 0.9rem 0.6rem 0;
  border-bottom: 1px solid var(--line);
}
.policy th { font-weight: 500; }

.updated { color: var(--muted); font-size: 0.9375rem; }

.toc { font-size: 0.9375rem; }
.toc ul { list-style: none; padding: 0; }
.toc li { margin-bottom: 0.35rem; }