/* LiveBridge site. No web fonts, no external assets: the page is set in the Mac's own faces. */

:root {
  --bg: #f1f6f7;
  --surface: #ffffff;
  --ink: #142a2e;
  --muted: #4a5f63;
  --accent: #0b6f79;
  --accent-soft: rgba(11, 111, 121, 0.09);
  --line: rgba(20, 42, 46, 0.12);
  --hero-top: #2a737c;
  --hero-bottom: #173f46;
  --code-bg: #12343a;
  --code-ink: #e4f2f3;
  --glass: rgba(255, 255, 255, 0.72);
  --glass-edge: rgba(255, 255, 255, 0.9);
  --shadow: 0 1px 2px rgba(16, 52, 58, 0.06), 0 12px 32px -12px rgba(16, 52, 58, 0.18);

  --display: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --text: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --measure: 40rem;
  --wide: 66rem;
  --gutter: 24px;
  --section-gap: 112px;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1d20;
    --surface: #152629;
    --ink: #e6f0f1;
    --muted: #a2b6b9;
    --accent: #72d4dc;
    --accent-soft: rgba(114, 212, 220, 0.1);
    --line: rgba(230, 240, 241, 0.12);
    --hero-top: #22626a;
    --hero-bottom: #102f35;
    --code-bg: #0a1618;
    --code-ink: #dcecee;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-edge: rgba(255, 255, 255, 0.1);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 40px -16px rgba(0, 0, 0, 0.6);
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.55 var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  font-family: var(--display);
  line-height: 1.15;
  margin: 0;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 0.1em 0.38em;
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 10;
  background: var(--surface);
  color: var(--ink);
  padding: 10px 16px;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.skip:focus {
  top: 16px;
}

/* Hero: the app icon's tile, enlarged to hold the page's opening. */

.hero {
  position: relative;
  margin: 16px;
  padding: 72px var(--gutter) 28px;
  border-radius: 40px;
  color: #fff;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(120% 70% at 50% -10%, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0) 60%),
    radial-gradient(70% 50% at 50% 100%, rgba(120, 210, 218, 0.22), rgba(120, 210, 218, 0) 70%),
    linear-gradient(180deg, var(--hero-top), var(--hero-bottom));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    var(--shadow);
}

.hero-inner {
  max-width: 44rem;
  margin: 0 auto;
}

.hero-icon {
  display: block;
  width: 112px;
  height: 112px;
  margin: 0 auto 12px;
  filter: drop-shadow(0 10px 24px rgba(0, 20, 24, 0.35));
}

.hero h1 {
  font-size: clamp(3.25rem, 8.5vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1;
}

.tagline {
  margin: 14px 0 20px;
  font-family: var(--display);
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.lede {
  max-width: 36rem;
  margin: 0 auto 32px;
  color: rgba(255, 255, 255, 0.9);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 17px;
  line-height: 1.2;
  text-decoration: none;
  transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.button:active {
  transform: scale(0.98);
}

.button-glyph {
  width: 18px;
  height: 18px;
}

.hero .button:focus-visible {
  outline-color: #fff;
}

.primary {
  background: #fff;
  color: #0d4f57;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 8px 20px -8px rgba(0, 20, 24, 0.5);
}

.primary:hover {
  background: #eef9fa;
}

.secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.38);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

.platform {
  margin: 16px 0 0;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.86);
}

/* The span: bars on a deck, like the icon and the menu bar glyph. */

.span {
  display: block;
  width: 100%;
  max-width: 68rem;
  height: auto;
  margin: 48px auto 0;
}

.span .deck {
  fill: #fff;
  opacity: 0.94;
}

.bar {
  transform-box: fill-box;
  transform-origin: 50% 100%;
  animation: rise 900ms cubic-bezier(0.2, 0.75, 0.2, 1) both;
  animation-delay: calc(var(--i) * 20ms + 200ms);
}

@keyframes rise {
  from {
    transform: scaleY(0.04);
    opacity: 0;
  }
  to {
    transform: scaleY(1);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bar {
    animation: none;
  }
  .button {
    transition: none;
  }
}

.unofficial {
  max-width: 44rem;
  margin: 20px auto 0;
  padding: 0 var(--gutter);
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}

/* Main column */

main {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

main > section {
  margin-top: var(--section-gap);
}

main > section > h2 {
  font-size: clamp(2rem, 4.2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.section-lede {
  font-size: 19px;
  color: var(--muted);
  max-width: var(--measure);
}

main h3 {
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

/* Demo: the recording of one request. */

main > section.demo {
  margin-top: 56px;
  padding: 36px 40px 40px;
  border-radius: 28px;
  background: var(--glass);
  box-shadow: inset 0 0 0 1px var(--glass-edge), var(--shadow);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

main > section.demo > .card-title {
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}

.demo-gif {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 0 0 1px var(--glass-edge);
}

.directions p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

/* How it works: the app sits in the middle, carrying the line between the other two. */

.roles {
  display: grid;
  grid-template-columns: 1fr 1.08fr 1fr;
  align-items: stretch;
  gap: 16px;
  margin-top: 40px;
}

.role {
  padding: 28px 8px 8px;
  border-top: 2px solid var(--line);
}

.role p {
  color: var(--muted);
  font-size: 16px;
}

.role .role-sub {
  color: var(--ink);
  font-size: 15px;
  margin-bottom: 14px;
}

.role-app {
  padding: 28px 28px 20px;
  border-top: 0;
  border-radius: 24px;
  color: #fff;
  background:
    radial-gradient(120% 60% at 50% 0%, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0) 70%),
    linear-gradient(180deg, var(--hero-top), var(--hero-bottom));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), var(--shadow);
}

.role-app p,
.role-app .role-sub {
  color: rgba(255, 255, 255, 0.9);
}

/* Install */

.requirements {
  max-width: var(--measure);
  color: var(--muted);
}

.steps {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  counter-reset: step;
  max-width: 46rem;
}

.step {
  position: relative;
  counter-increment: step;
  padding: 0 0 40px 64px;
}

.step + .step {
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.step::before {
  content: counter(step);
  position: absolute;
  left: 0;
  font: 700 40px/1 var(--display);
  color: var(--accent);
  letter-spacing: -0.03em;
}

.step h3 {
  font-size: 22px;
  margin-bottom: 12px;
  padding-top: 6px;
}

.substeps {
  margin: 0 0 1em;
  padding-left: 1.4em;
}

.substeps li + li {
  margin-top: 6px;
}

.aside {
  font-size: 15px;
  color: var(--muted);
}

.code {
  position: relative;
  margin: 0 0 1em;
}

.code pre {
  margin: 0;
  padding: 16px 20px;
  padding-right: 88px;
  border-radius: 14px;
  background: var(--code-bg);
  color: var(--code-ink);
  overflow-x: auto;
  font: 14.5px/1.7 var(--mono);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.code pre code {
  background: none;
  padding: 0;
  font-size: inherit;
  border-radius: 0;
  white-space: inherit;
}

.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  min-height: 32px;
  padding: 4px 14px;
  border: 0;
  border-radius: 999px;
  font: 600 13px/1 var(--text);
  color: var(--code-ink);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
  cursor: pointer;
}

.copy:hover {
  background: rgba(255, 255, 255, 0.18);
}

.copy:focus-visible {
  outline-color: var(--code-ink);
}

/* Highlights */

.highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 56px;
  margin: 40px 0 0;
}

.highlights > div {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.highlights dt {
  font: 650 19px/1.3 var(--display);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.highlights dd {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

/* Open source */

#open-source > p {
  max-width: var(--measure);
}

.directions {
  list-style: none;
  margin: 32px 0 36px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.directions li {
  padding: 24px;
  border-radius: 20px;
  background: var(--glass);
  box-shadow: inset 0 0 0 1px var(--line);
}

.tertiary {
  color: var(--accent);
  box-shadow: inset 0 0 0 1.5px var(--accent);
}

.tertiary:hover {
  background: var(--accent-soft);
}

/* Footer */

.footer {
  max-width: var(--wide);
  margin: var(--section-gap) auto 0;
  padding: 32px var(--gutter) 48px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

.footer ul {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 15px;
}

.footer p {
  margin: 0;
  max-width: var(--measure);
}

/* Narrow screens */

@media (max-width: 860px) {
  .roles {
    grid-template-columns: 1fr;
  }
  .role {
    padding: 24px 0 4px;
  }
  .role-app {
    padding: 24px;
  }
  .directions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  :root {
    --gutter: 20px;
    --section-gap: 80px;
  }
  .hero {
    margin: 10px;
    padding-top: 48px;
    border-radius: 30px;
  }
  .hero-icon {
    width: 88px;
    height: 88px;
  }
  .span {
    margin-top: 36px;
  }
  main > section.demo {
    padding: 28px 24px;
    border-radius: 24px;
  }
  .highlights {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .step {
    padding-left: 44px;
  }
  .step::before {
    font-size: 32px;
  }
  /* The copy button gets its own row, so it never covers a long command. */
  .code:not(.code-short) pre {
    padding: 50px 18px 16px;
  }
  .copy {
    top: 8px;
    right: 8px;
  }
}

@media (max-width: 420px) {
  .actions .button {
    width: 100%;
  }
}