/* Shared styling for the GitHub Pages site (index.html + privacy.html).
 *
 * The palette is the phone apps' own - android/app/src/main/res/values/
 * colors.xml by day, values-night/colors.xml by night - so the page, the
 * Android client and the iOS client all read as one product. Dark is the
 * default because the feature graphic is, and because that's the theme a
 * front-of-house desk is actually looked at in.
 *
 * No webfonts and no CDN: the whole page has to render from the repo
 * alone, whether it is served by GitHub Pages or opened as a local file. */

:root {
  color-scheme: dark light;

  --bg: #121317;
  --surface: #1b1d22;
  --surface-variant: #25272e;
  --text: #ecedf0;
  --muted: #a9acb4;
  --accent: #6c93ff;
  --accent-strong: #8aa9ff;
  --outline: #2f323a;

  --measure: 46rem;
  --radius: 12px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f5f7;
    --surface: #ffffff;
    --surface-variant: #e7e9ee;
    --text: #1b1d22;
    --muted: #54585f;
    --accent: #3b6df6;
    --accent-strong: #2b56cc;
    --outline: #d3d6dc;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

/* --- banner ------------------------------------------------------------ */

/* Full-bleed at its own aspect ratio, dissolving into the page background
 * below the wordmark - the same treatment the Android connect screen gives
 * it (FadingBannerView) and the desktop About window crops for. */
.banner {
  position: relative;
  display: block;
  width: 100%;
  /* Explicit, not inherited: the img's width/height attributes (there so
     the page reserves the right space before the file loads) come through
     as presentation hints, and without this the 500px one survives
     width:100% and stretches the artwork on a narrow screen. */
  height: auto;
  max-height: 52vh;
  object-fit: cover;
  /* Weighted low so that when a short viewport forces a crop it takes the
     bite out of the faders at the top, never off the wordmark. */
  object-position: center 70%;
}

.banner-wrap {
  position: relative;
  background: #000;
}

@media (prefers-color-scheme: light) {
  .banner-wrap { background: #f4f5f7; }
}

.banner-wrap::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  /* Only as tall as the artwork's own flat lower edge (its bottom ~14%,
     the same tail the Android banner and the desktop About window crop
     off) - any taller and the fade starts eating the wordmark. */
  height: 13%;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}

/* --- layout ------------------------------------------------------------ */

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 24px 72px;
}

header.intro {
  margin-top: -8px;
  text-align: center;
}

h1 {
  font-size: 2.4rem;
  line-height: 1.15;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0 0 4px;
}

.version {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

h2 {
  font-size: 1.3rem;
  margin: 48px 0 12px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1rem;
  margin: 0 0 4px;
}

p { margin: 0 0 16px; }

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

hr {
  border: 0;
  border-top: 1px solid var(--outline);
  margin: 40px 0;
}

/* --- buttons ----------------------------------------------------------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 24px 0 8px;
}

.button {
  display: inline-block;
  padding: 9px 18px;
  border-radius: 8px;
  border: 1px solid var(--outline);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
}

.button:hover { border-color: var(--accent); color: var(--text); }

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0b1530;
}

.button.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: #0b1530; }

@media (prefers-color-scheme: light) {
  .button.primary, .button.primary:hover { color: #ffffff; }
}

/* --- cards ------------------------------------------------------------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cards li {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.cards p { margin: 0; color: var(--muted); font-size: 0.94rem; }

/* --- signal chain ------------------------------------------------------ */

/* Console -> desktop -> phones, in the order the audio control actually
 * travels. Wraps to a column on a narrow screen, arrows and all. */
.chain {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.chain li {
  flex: 1 1 12rem;
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.chain .step {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

.chain p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* --- misc -------------------------------------------------------------- */

dl.facts { margin: 0; }

dl.facts div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding: 8px 0;
  border-bottom: 1px solid var(--outline);
}

dl.facts dt { flex: 0 0 9rem; color: var(--muted); margin: 0; }
dl.facts dd { flex: 1 1 16rem; margin: 0; }

.note {
  background: var(--surface-variant);
  border-radius: var(--radius);
  padding: 14px 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

.note p:last-child { margin-bottom: 0; }

footer {
  border-top: 1px solid var(--outline);
  margin-top: 56px;
  padding-top: 20px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer p { margin: 0 0 6px; }

/* --- prose (privacy.html) ---------------------------------------------- */

.prose h2 { margin-top: 36px; }
.prose h3 { margin: 24px 0 4px; font-size: 1.02rem; }
.prose ul { padding-left: 22px; }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--text); }

.back {
  display: inline-block;
  margin: 24px 0 0;
  font-size: 0.95rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--surface-variant);
  padding: 1px 5px;
  border-radius: 5px;
}