/*
 * chitchak.com
 *
 * The same visual system as the app - warm graphite, brass for the thing you
 * act on, and the signal colour reserved for live audio, which on a static page
 * means the logo's middle bar and nothing else. Tokens are duplicated from
 * apps/desktop/src/styles.css rather than shared, because a landing page that
 * imports the app's stylesheet would pull in a whole component library to use
 * six colours.
 */

@font-face {
  font-family: 'Archivo Variable';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/archivo-latin-wght-normal.woff2') format('woff2-variations');
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2');
}

:root {
  --graphite-900: #131215;
  --graphite-850: #17161a;
  --graphite-800: #1c1a1f;
  --graphite-750: #232128;
  --graphite-700: #2b2932;

  --brass-500: #c9954a;
  --brass-400: #d9a45b;
  --brass-300: #e6bd83;
  --brass-glow: rgba(217, 164, 91, 0.14);

  --signal-400: #4fd6c4;

  --text-bright: #f2f0f4;
  --text-primary: #ddd9e2;
  --text-secondary: #9d98a8;
  --text-muted: #6b6675;

  --line: #2a2830;
  --line-strong: #363340;

  --radius-lg: 10px;
  --radius: 7px;

  --font-ui: 'Archivo Variable', 'Archivo', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;

  --ease: cubic-bezier(0.2, 0, 0, 1);

  --page: 780px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-primary);
  background: var(--graphite-850);
  -webkit-font-smoothing: antialiased;
}

/* The page sits on a very slight warm glow, so the flat near-black does not
   read as an unstyled document. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(900px 420px at 50% -140px, rgba(217, 164, 91, 0.07), transparent 70%);
}

a {
  color: var(--brass-300);
  text-decoration-color: rgba(230, 189, 131, 0.35);
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-color: var(--brass-300);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.86em;
}

[hidden] {
  display: none !important;
}

/* --- Bar ------------------------------------------------------------------ */

.bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--page);
  margin: 0 auto;
  padding: 20px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-bright);
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.mark {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: var(--graphite-900);
  padding: 3px;
}

.bar__nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.bar__nav a:not(.btn) {
  color: var(--text-secondary);
  text-decoration: none;
}

.bar__nav a:not(.btn):hover {
  color: var(--text-primary);
}

/* --- Buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--graphite-750);
  color: var(--text-primary);
  font: inherit;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition:
    border-color 120ms var(--ease),
    background 120ms var(--ease),
    transform 120ms var(--ease);
}

.btn:hover {
  border-color: var(--brass-500);
  transform: translateY(-1px);
}

.btn:active {
  transform: none;
}

.btn:focus-visible {
  outline: 2px solid var(--brass-400);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--brass-400);
  border-color: var(--brass-400);
  color: #1a1408;
  font-weight: 600;
  box-shadow: 0 0 0 6px var(--brass-glow);
}

.btn--primary:hover {
  background: var(--brass-300);
  border-color: var(--brass-300);
}

.btn--ghost {
  background: transparent;
}

.btn--sm {
  padding: 7px 14px;
  font-size: 13.5px;
}

/* --- Layout --------------------------------------------------------------- */

main {
  position: relative;
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 24px 40px;
}

section + section {
  margin-top: 72px;
}

.section-title {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.section-sub {
  margin: 0 0 22px;
  max-width: 60ch;
  color: var(--text-secondary);
}

/* --- Hero ----------------------------------------------------------------- */

.hero {
  padding: 44px 0 8px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--signal-400);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 6.4vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 600;
  color: var(--text-bright);
  max-width: 15ch;
}

.lede {
  margin: 0 0 30px;
  max-width: 58ch;
  font-size: 17px;
  color: var(--text-secondary);
}

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

.cta__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  color: var(--text-muted);
}

.notice {
  margin: 26px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--brass-400);
  border-radius: var(--radius);
  background: var(--graphite-800);
  color: var(--text-secondary);
  font-size: 14px;
}

.notice strong {
  color: var(--text-primary);
}

/* --- Points --------------------------------------------------------------- */

.points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.point {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--graphite-800);
}

.point h2 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-bright);
  letter-spacing: -0.01em;
}

.point p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

/* --- Downloads ------------------------------------------------------------ */

.dl-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--graphite-800);
}

.dl {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
}

.dl + .dl {
  border-top: 1px solid var(--line);
}

/* The platform you are on, resolved by download.js. */
.dl--yours {
  background: var(--graphite-750);
  box-shadow: inset 2px 0 0 var(--brass-400);
}

.dl__what {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.dl__name {
  color: var(--text-primary);
  font-weight: 500;
}

.dl--muted .dl__name {
  color: var(--text-secondary);
  font-weight: 400;
}

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

.dl__soon {
  color: var(--text-muted);
  padding-right: 4px;
}

/* --- Notes ---------------------------------------------------------------- */

.note {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--graphite-800);
}

.note + .note {
  margin-top: 14px;
}

.note h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-bright);
}

.note p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.note em {
  color: var(--text-primary);
  font-style: normal;
}

.note strong {
  color: var(--text-primary);
}

.note__after {
  margin-top: 12px !important;
}

.code {
  margin: 12px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--graphite-900);
  color: var(--brass-300);
  font-size: 13px;
  overflow-x: auto;
}

.code code {
  font: inherit;
}

/* --- Foot ----------------------------------------------------------------- */

.foot {
  position: relative;
  max-width: var(--page);
  margin: 0 auto;
  padding: 28px 24px 48px;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 13.5px;
}

.foot p {
  margin: 0;
  max-width: 60ch;
}

/* --- Narrow --------------------------------------------------------------- */

@media (max-width: 720px) {
  .points {
    grid-template-columns: 1fr;
  }

  .bar__nav a:not(.btn) {
    display: none;
  }

  .cta .btn {
    flex: 1 1 auto;
  }

  .dl {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }
}