:root {
  --bg: #000;
  --fg: #fff;
  --muted: #888;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --measure: 72ch;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.6;
}

html.no-scroll {
  overflow: hidden;
}

a {
  color: var(--fg);
}

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

button:focus:not(:focus-visible),
.slide:focus,
.help-inner:focus {
  outline: none;
}

.js-only,
[data-copy] {
  display: none;
}

.js .js-only {
  display: block;
}

.js [data-copy] {
  display: inline-block;
}

.deck {
  display: block;
}

.slide {
  max-width: calc(var(--measure) + 12vw);
  padding: 8vh 6vw 6vh;
}

.js .slide {
  display: none;
  min-height: 100dvh;
  flex-direction: column;
  justify-content: flex-start;
  padding: 12vh 6vw 14vh;
}

.js .slide.is-active {
  display: flex;
}

.wordmark {
  margin: 0 0 1.5rem;
  font-size: clamp(3.25rem, 13vw, 9.5rem);
  font-weight: 700;
  line-height: 1;
}

.cursor {
  display: inline-block;
  animation: blink 1s steps(1, end) infinite;
}

.keyed .cursor {
  animation: none;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

p {
  margin: 0 0 1.25rem;
  max-width: var(--measure);
}

.lede {
  font-size: clamp(1.125rem, 2.2vw, 1.5rem);
}

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

.bullets {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  max-width: var(--measure);
}

.bullets li {
  padding-left: 2ch;
  text-indent: -2ch;
}

.bullets li::before {
  content: "\2022\00a0";
}

.box {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1.5ch;
  flex-wrap: wrap;
  margin: 0.75rem 0 1.5rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--fg);
  max-width: var(--measure);
}

.box figcaption,
.box-title {
  position: absolute;
  top: -0.75em;
  left: 1.25ch;
  margin: 0;
  padding: 0 0.75ch;
  background: var(--bg);
  color: var(--muted);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  text-decoration: none;
}

.box code,
.box pre {
  margin: 0;
  white-space: pre;
  flex: 1 1 auto;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
}

.box.keys {
  flex-direction: column;
  align-items: stretch;
  gap: 0;
}

.scroll {
  white-space: pre;
  max-width: 100%;
  overflow-x: auto;
}

button {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--fg);
  font: inherit;
  padding: 0.25rem 1ch;
  cursor: pointer;
}

button:hover:not([aria-disabled="true"]) {
  background: var(--fg);
  color: var(--bg);
}

button[aria-disabled="true"] {
  color: var(--muted);
  border-color: var(--muted);
  cursor: default;
}

.hint,
.muted {
  color: var(--muted);
}

.platforms {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  max-width: var(--measure);
}

.platforms li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 2ch;
  padding: 0.25rem 1ch;
  border-top: 1px solid var(--muted);
}

.platforms li:last-child {
  border-bottom: 1px solid var(--muted);
}

.platforms li a {
  padding: 0.25rem 0;
}

.platforms li.detected {
  background: var(--fg);
  color: var(--bg);
}

.platforms li.detected a {
  color: var(--bg);
}

.platforms li.detected a:focus-visible {
  outline-color: var(--bg);
}

.platforms .yours {
  color: var(--muted);
}

.platforms li.detected .yours {
  color: var(--bg);
}

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

.cmds dt {
  margin-top: 0.75rem;
}

.cmds dd {
  margin: 0;
  color: var(--muted);
}

.status {
  display: none;
}

.js .status {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2ch;
  padding: 0.75rem 6vw 1rem;
  color: var(--muted);
  background: var(--bg);
}

.nav {
  display: flex;
  gap: 1ch;
}

.nav button {
  min-width: 3ch;
}

.help {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6vw;
  background: rgba(0, 0, 0, 0.88);
}

.help[hidden] {
  display: none;
}

.help-inner {
  position: relative;
  padding: 1rem 1.5rem;
  border: 1px solid var(--fg);
  background: var(--bg);
  max-width: 100%;
}

.help-inner .muted {
  margin: 0.75rem 0 0;
}

@media (max-width: 600px) {
  html,
  body {
    font-size: 15px;
  }

  .slide {
    padding: 6vh 5vw 6vh;
  }

  .js .slide {
    padding: 10vh 5vw 8rem;
  }

  .box {
    padding: 0.875rem 1rem;
  }
}

@media (pointer: coarse) {
  .nav {
    gap: 0.5rem;
  }

  .nav button {
    min-width: 44px;
    min-height: 44px;
  }

  .platforms li a {
    padding: 0.5rem 0;
  }
}

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