/* teraos.co: the app's Stark look on the web. Colours are the dashboard's
   StarkTheme tokens; type is the Mac's own system face, so nothing loads from
   anywhere else. */
:root {
  --bg: #020609;
  --bg-raised: #070d13;
  --line: #1f445c;
  --line-strong: #5aa8d0;
  --text: #dee0e3;
  --muted: #94a4b2;
  --cyan: #50c0f8;
  --cyan-soft: #9dd8f0;
  --gold: #c78b38;
  --measure: 66ch;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--bg) 0%, #03070c 100%);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan-soft); text-underline-offset: 3px; }
a:hover { color: var(--cyan); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }

/* Header and footer */
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 22px; }
.wordmark { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: 0.22em; font-size: 15px; }
.bar nav { display: flex; gap: 20px; font-size: 15px; }
.bar nav a { color: var(--muted); text-decoration: none; }
.bar nav a:hover, .bar nav a[aria-current="page"] { color: var(--text); }

footer { border-top: 1px solid var(--line); margin-top: 96px; padding-block: 28px 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
footer nav { display: flex; gap: 20px; }
footer a { color: var(--muted); }

/* Home: the hero is the power ring from the dashboard */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 360px); gap: 48px; align-items: center; padding-block: 56px 72px; }
.hero h1 { font: 700 clamp(44px, 7vw, 84px)/1.02 -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif; letter-spacing: -0.035em; margin: 0 0 24px; }
.hero p { color: var(--muted); font-size: 19px; max-width: 34em; margin: 0 0 32px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.button {
  display: inline-block; padding: 13px 22px; border-radius: 10px;
  background: var(--cyan); color: #01131d; font-weight: 650; text-decoration: none;
  box-shadow: 0 0 0 1px var(--line-strong), 0 8px 30px rgba(80, 192, 248, 0.18);
}
.button:hover { background: var(--cyan-soft); color: #01131d; }
.note { color: var(--muted); font-size: 14px; }

.ring { width: 100%; height: auto; overflow: visible; }
.ring .track { fill: none; stroke: var(--line); stroke-width: 1; }
.ring .ticks { fill: none; stroke: var(--line-strong); stroke-width: 6; stroke-dasharray: 1 11; opacity: 0.55; }
.ring .arc { fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round; }
.ring .arc-gold { fill: none; stroke: var(--gold); stroke-width: 2; stroke-linecap: round; }
.ring .core { fill: var(--bg-raised); stroke: var(--line-strong); stroke-width: 1.5; }
.ring .glow { fill: var(--cyan); opacity: 0.16; transform-origin: 160px 160px; animation: listen 4.8s ease-in-out infinite; }
.ring .glyph { fill: var(--cyan-soft); font: 700 64px -apple-system, BlinkMacSystemFont, system-ui, sans-serif; }
@keyframes listen { 0%, 100% { opacity: 0.10; transform: scale(0.92); } 50% { opacity: 0.26; transform: scale(1.04); } }
@media (prefers-reduced-motion: reduce) { .ring .glow { animation: none; } }

/* What it does: one list, each line says where the work happens */
.does { border-top: 1px solid var(--line); padding-top: 48px; }
.does h2, .private h2 { font-size: 28px; letter-spacing: -0.015em; margin: 0 0 28px; }
.does ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 48px; }
.does li { padding: 20px 0 22px; border-bottom: 1px solid var(--line); }
.does h3 { font-size: 19px; margin: 6px 0 4px; }
.does p { margin: 0; color: var(--muted); }
.where { font-size: 11px; font-weight: 650; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan-soft); }
.where.asks { color: var(--gold); }

.private { margin-top: 72px; padding: 32px; border: 1px solid var(--line); border-radius: 16px; background: var(--bg-raised); max-width: 760px; }
.private p { color: var(--muted); margin: 0 0 12px; }
.private p:last-child { margin-bottom: 0; }

/* Long-form pages: privacy, terms, download */
/* The column lines up with the wordmark; each block keeps a readable measure. */
.doc { padding-block: 40px 0; }
.doc > * { max-width: var(--measure); }
.doc h1 { font-size: clamp(34px, 5vw, 48px); line-height: 1.1; letter-spacing: -0.025em; margin: 0 0 12px; }
.doc .updated { color: var(--muted); margin: 0 0 40px; font-size: 15px; }
.doc h2 { font-size: 22px; margin: 44px 0 12px; letter-spacing: -0.01em; }
.doc h3 { font-size: 18px; margin: 28px 0 8px; }
.doc p, .doc li { color: #c9ced3; }
.doc ul { padding-left: 1.2em; }
.doc li + li { margin-top: 6px; }
.doc strong { color: var(--text); }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .hero { grid-template-columns: 1fr; gap: 24px; padding-block: 24px 48px; }
  .hero .ring { max-width: 220px; order: -1; }
  .does ul { grid-template-columns: 1fr; }
  .private { padding: 22px; }
  .bar nav { gap: 14px; }
}