@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  font-stretch: 62% 125%;
  src: url(fonts/archivo-latin-wdth-normal.woff2) format('woff2');
}

:root {
  color-scheme: light dark;

  --panel: #eef0f2;
  --surface: #f9fafb;
  --sunken: #e3e7eb;
  --rule: #cbd2da;
  --rule-strong: #aab4c0;
  --ink: #1b2430;
  --ink-soft: #445064;
  --ink-faint: #5d697a;
  --console: #3d5a80;
  --console-strong: #2c4566;
  --on-console: #fff;
  --onair: #d63a32;
  --onair-wash: #fbe4e2;
  --meter: #2a9963;
  --meter-hot: #d49b16;
  --meter-off: #d2d8df;

  --focus: var(--console);
  --shadow: 0 1px 0 rgb(27 36 48 / 6%), 0 18px 40px -22px rgb(27 36 48 / 38%);

  --font: 'Archivo', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:
    ui-monospace, 'SFMono-Regular', 'Cascadia Code', 'Roboto Mono', Menlo, Consolas, 'Liberation Mono',
    monospace;

  --radius-s: 6px;
  --radius-m: 12px;
  --gutter: clamp(16px, 4vw, 32px);
  --measure: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --panel: #15181d;
    --surface: #1c2128;
    --sunken: #101317;
    --rule: #2c333d;
    --rule-strong: #3d4653;
    --ink: #e7ebf0;
    --ink-soft: #b4bdc9;
    --ink-faint: #8f99a7;
    --console: #8fb3e0;
    --console-strong: #b4cdee;
    --on-console: #0f1722;
    --onair: #ff6b5f;
    --onair-wash: #3a1f1d;
    --meter: #3dd68c;
    --meter-hot: #f2c14e;
    --meter-off: #2a3038;
    --shadow: 0 1px 0 rgb(0 0 0 / 30%), 0 20px 44px -20px rgb(0 0 0 / 70%);
  }
}

/* Base */

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

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

body {
  margin: 0;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1rem;
  font-stretch: 100%;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

a {
  color: var(--console);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--console-strong);
  text-decoration-thickness: 2px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

figure {
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

code,
pre {
  font-family: var(--mono);
}

code {
  padding: 0.1em 0.3em;
  border-radius: 4px;
  background: var(--sunken);
  font-size: 0.875em;
  overflow-wrap: anywhere;
}

pre {
  margin: 12px 0 0;
  padding: 14px 16px;
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: var(--radius-s);
  background: var(--sunken);
  color: var(--ink);
  font-size: 0.875rem;
  line-height: 1.65;
  tab-size: 2;
}

pre code {
  padding: 0;
  background: none;
  font-size: inherit;
  overflow-wrap: normal;
}

.wrap {
  width: min(var(--measure), 100% - 2 * var(--gutter));
  margin-inline: auto;
}

.skip {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 10;
  padding: 10px 14px;
  border-radius: var(--radius-s);
  background: var(--console);
  color: var(--on-console);
  font-weight: 600;
  transform: translateY(-200%);
}

.skip:focus {
  transform: none;
}

/* Header */

.masthead {
  border-bottom: 1px solid var(--rule);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover {
  color: var(--ink);
}

.mark {
  flex: none;
}

.wordmark {
  font-size: 1.25rem;
  font-weight: 800;
  font-stretch: 80%;
  letter-spacing: -0.01em;
  line-height: 1;
}

.nav {
  display: flex;
  gap: clamp(14px, 3vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav a {
  color: var(--ink-soft);
  font-weight: 600;
  text-decoration: none;
}

.nav a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

/* Hero */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  align-items: center;
  gap: clamp(36px, 5vw, 64px);
  padding-top: clamp(40px, 7vw, 88px);
}

.hero-copy {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  column-gap: clamp(16px, 2vw, 22px);
}

.hero-copy > :not(.meter) {
  grid-column: 2;
}

.hero h1 {
  grid-row: 1;
  font-size: clamp(2.9rem, 6.2vw, 5rem);
  font-stretch: 64%;
  line-height: 0.94;
  letter-spacing: -0.02em;
}

.lede {
  max-width: 32rem;
  margin-top: 24px;
  color: var(--ink-soft);
  font-size: clamp(1.125rem, 1.6vw, 1.25rem);
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-size: 1.125rem;
  font-weight: 650;
  font-stretch: 90%;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color 120ms ease,
    border-color 120ms ease;
}

.primary {
  background: var(--console);
  color: var(--on-console);
}

.primary:hover {
  background: var(--console-strong);
  color: var(--on-console);
}

.secondary {
  border-color: var(--rule-strong);
  background: var(--surface);
  color: var(--ink);
}

.secondary:hover {
  border-color: var(--ink-faint);
  color: var(--ink);
}

/* Screenshots sit in a faceplate: hairline rule, rounded corners, soft shadow. */
.faceplate {
  overflow: hidden;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-m);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.faceplate img {
  width: 100%;
}

/* The app centres its content, so trim the empty margins at the sides of the room. */
.hero-shot img {
  aspect-ratio: 1140 / 940;
  object-fit: cover;
}

/*
 * The level meter beside the headline: ten segments, green with an amber top pair.
 * One layer draws the unlit segments, a second draws the lit ones and is clipped
 * from the top in whole-segment steps, like a speaking voice.
 */
.meter {
  position: relative;
  grid-row: 1;
  grid-column: 1;
  width: 10px;
  margin-block: 0.35rem 0.6rem;
}

.meter::before,
.meter::after {
  content: '';
  position: absolute;
  inset: 0;
  -webkit-mask: repeating-linear-gradient(to top, #000 0 calc(10% - 3px), transparent calc(10% - 3px) 10%);
  mask: repeating-linear-gradient(to top, #000 0 calc(10% - 3px), transparent calc(10% - 3px) 10%);
}

.meter::before {
  background: var(--meter-off);
}

.meter::after {
  background: linear-gradient(to top, var(--meter) 0 80%, var(--meter-hot) 80% 100%);
  clip-path: inset(60% 0 0 0);
  animation: talk 3.2s steps(1, end) infinite;
}

@keyframes talk {
  0% {
    clip-path: inset(60% 0 0 0);
  }
  6% {
    clip-path: inset(40% 0 0 0);
  }
  11% {
    clip-path: inset(30% 0 0 0);
  }
  16% {
    clip-path: inset(50% 0 0 0);
  }
  21% {
    clip-path: inset(30% 0 0 0);
  }
  26% {
    clip-path: inset(10% 0 0 0);
  }
  31% {
    clip-path: inset(40% 0 0 0);
  }
  36% {
    clip-path: inset(60% 0 0 0);
  }
  41% {
    clip-path: inset(80% 0 0 0);
  }
  46% {
    clip-path: inset(100% 0 0 0);
  }
  56% {
    clip-path: inset(70% 0 0 0);
  }
  61% {
    clip-path: inset(40% 0 0 0);
  }
  66% {
    clip-path: inset(20% 0 0 0);
  }
  71% {
    clip-path: inset(40% 0 0 0);
  }
  76% {
    clip-path: inset(30% 0 0 0);
  }
  81% {
    clip-path: inset(50% 0 0 0);
  }
  86% {
    clip-path: inset(70% 0 0 0);
  }
  91% {
    clip-path: inset(90% 0 0 0);
  }
  96% {
    clip-path: inset(100% 0 0 0);
  }
  100% {
    clip-path: inset(60% 0 0 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .meter::after {
    animation: none;
    clip-path: inset(40% 0 0 0);
  }

  .button {
    transition: none;
  }
}

/* Sections */

.section {
  margin-top: clamp(72px, 10vw, 120px);
  padding-top: 28px;
  border-top: 2px solid var(--ink);
  scroll-margin-top: 16px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: 32px clamp(32px, 5vw, 72px);
  align-items: start;
}

.split-even {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.section h2 {
  color: var(--ink);
  font-size: clamp(2.1rem, 4.2vw, 2.9rem);
  font-stretch: 66%;
  line-height: 0.98;
  letter-spacing: -0.015em;
}

.section h3 {
  font-size: 1.375rem;
  font-weight: 750;
  font-stretch: 72%;
  line-height: 1.1;
}

.prose {
  color: var(--ink-soft);
}

.prose > * + * {
  margin-top: 16px;
}

.prose > h2 + * {
  margin-top: 20px;
}

.prose > h3 {
  margin-top: 36px;
  color: var(--ink);
}

.prose > h3 + * {
  margin-top: 12px;
}

/* Definition lists: roles stack, specs read as a two-column sheet. */

dl {
  margin: 0;
}

dd {
  margin: 0;
}

.roles {
  margin-top: 28px;
}

.prose > .roles {
  margin-top: 28px;
  margin-bottom: 28px;
}

.roles > div {
  padding: 14px 0 16px;
  border-top: 1px solid var(--rule);
}

.roles > div:last-child {
  border-bottom: 1px solid var(--rule);
}

.roles dt,
.spec dt {
  color: var(--ink);
  font-size: 1.0625rem;
  font-weight: 700;
  font-stretch: 85%;
  line-height: 1.3;
}

.roles dd {
  margin-top: 4px;
}

.spec > div {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: 4px 20px;
  padding: 14px 0 16px;
  border-top: 1px solid var(--rule);
}

.spec > div:last-child {
  border-bottom: 1px solid var(--rule);
}

.spec dt {
  padding-top: 1px;
}

.types > div {
  grid-template-columns: 6.5rem minmax(0, 1fr);
}

.side-shot figcaption {
  margin-top: 10px;
  color: var(--ink-faint);
  font-size: 0.875rem;
}

/* Show the header and the first three rows of the rooms list, without the empty side margins. */
.crop {
  aspect-ratio: 1100 / 458;
}

.crop picture {
  display: block;
}

/* Scale the 1280px shot so its middle 1100px fill the frame. */
.crop img {
  width: 116.3636%;
  max-width: none;
  margin-left: -9.0909%;
}

/* Self-hosting */

.note {
  padding: 16px 18px 18px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-m);
  background: var(--surface);
}

.prose > .note {
  margin-top: 28px;
  margin-bottom: 28px;
}

.note h3 {
  margin-bottom: 6px;
  color: var(--ink);
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  color: var(--ink-soft);
}

.steps > li {
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  column-gap: 12px;
  padding: 18px 0 24px;
  border-top: 1px solid var(--rule);
  counter-increment: step;
}

.steps > li:first-child {
  padding-top: 6px;
  border-top: 0;
}

.steps > li::before {
  content: counter(step);
  grid-row: 1 / span 10;
  color: var(--console);
  font-size: 2.75rem;
  font-weight: 800;
  font-stretch: 62%;
  line-height: 0.9;
}

.steps > li > * {
  grid-column: 2;
  min-width: 0;
}

.steps h3 {
  color: var(--ink);
  padding-top: 4px;
}

.steps p {
  margin-top: 12px;
}

/* Footer */

.footer {
  margin-top: clamp(80px, 12vw, 144px);
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  padding-block: 28px 40px;
}

.footer .wordmark {
  font-size: 1.0625rem;
}

.footer-inner > :last-child {
  margin-left: auto;
}

/* Layout changes */

@media (max-width: 900px) {
  .hero,
  .split,
  .split-even {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-copy {
    max-width: 36rem;
  }
}

@media (max-width: 600px) {
  /* On a phone, show the stage and the On air bar at a readable size. */
  .hero-shot img {
    aspect-ratio: 720 / 940;
    object-position: 17.86% 0;
  }

  .steps > li {
    grid-template-columns: 1.75rem minmax(0, 1fr);
  }

  .steps > li::before {
    font-size: 2.25rem;
  }
}

@media (max-width: 560px) {
  .spec > div {
    grid-template-columns: minmax(0, 1fr);
  }

  .types > div {
    grid-template-columns: 5.5rem minmax(0, 1fr);
  }

  .footer-inner > :last-child {
    margin-left: 0;
    flex-basis: 100%;
  }
}