/* The demo site. Colours are tokens, redefined for a dark system theme. */
:root {
  --bg: #ffffff;
  --bg-soft: #f4f6f9;
  --fg: #1d232b;
  --fg-soft: #4e5966;
  --line: #d7dde5;
  --accent: #1f5fbf;
  --accent-fg: #ffffff;
  --accent-soft: #e5eefb;
  --code-bg: #f1f3f6;
  --focus: #1f5fbf;
  --danger: #b42318;
  --radius: 8px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d;
    --bg-soft: #1c2229;
    --fg: #e6eaef;
    --fg-soft: #a9b3be;
    --line: #313a44;
    --accent: #6ea8ff;
    --accent-fg: #0d1520;
    --accent-soft: #1d2b40;
    --code-bg: #1a1f26;
    --focus: #8bb9ff;
    --danger: #ff8a7a;
    color-scheme: dark;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  overflow-wrap: break-word;
}
a {
  color: var(--accent);
}
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
img,
svg,
iframe {
  max-width: 100%;
}

.skip {
  position: absolute;
  left: 16px;
  top: -48px;
  padding: 8px 12px;
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: var(--radius);
  z-index: 10;
}
.skip:focus {
  top: 8px;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.top {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.top .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  padding-top: 10px;
  padding-bottom: 10px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
  text-decoration: none;
}
.brand svg {
  width: 28px;
  height: 28px;
}
.nav {
  flex: 1 1 auto;
}
.nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav a {
  color: var(--fg-soft);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover {
  color: var(--fg);
}
.nav a[aria-current='page'] {
  color: var(--fg);
  border-bottom-color: var(--accent);
}
.lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--fg-soft);
}
select,
button,
input {
  font: inherit;
}
select {
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}

main {
  display: block;
  padding: 24px 0 48px;
}
h1 {
  font-size: clamp(28px, 6vw, 44px);
  line-height: 1.15;
  margin: 8px 0 12px;
}
h2 {
  font-size: 24px;
  margin: 40px 0 12px;
}
h3 {
  font-size: 17px;
  margin: 0 0 6px;
}
p {
  margin: 0 0 12px;
}
.lead {
  font-size: 18px;
  color: var(--fg-soft);
  max-width: 760px;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
}
.button:hover,
button:hover {
  border-color: var(--accent);
}
.button.primary,
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}
button:disabled {
  opacity: 0.5;
  cursor: default;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 8px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 14px;
}
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: var(--bg-soft);
  min-width: 0;
}
.card p {
  margin: 0;
  color: var(--fg-soft);
}

/* Code */
.code {
  position: relative;
  margin: 8px 0 18px;
  min-width: 0;
}
pre {
  margin: 0;
  padding: 14px 16px;
  padding-right: 92px;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: auto;
  max-width: 100%;
  font: 13.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
  tab-size: 2;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.code .copy {
  position: absolute;
  top: 8px;
  right: 8px;
  min-height: 30px;
  padding: 2px 10px;
  font-size: 13px;
}

.muted {
  color: var(--fg-soft);
}
.notice {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 10px 14px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 12px 0;
}

/* Live editor page */
.drop {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 12px 0;
}
.drop.over {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.drop input[type='file'] {
  max-width: 100%;
}
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 8px 0;
}
.toolbar .group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.toolbar .label {
  font-size: 13px;
  color: var(--fg-soft);
  margin-right: 2px;
}
.toolbar .sep {
  width: 1px;
  align-self: stretch;
  background: var(--line);
  margin: 0 6px;
}
.check {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
}
.status {
  min-height: 1.6em;
  margin: 6px 0;
  color: var(--fg-soft);
}
.status[data-kind='error'] {
  color: var(--danger);
}
.editor {
  height: max(420px, calc(100vh - 300px));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #ffffff;
  color: #1d232b;
  position: relative;
}
.editor .empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 16px;
  text-align: center;
  color: #4e5966;
}

/* Examples page */
.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}
.example {
  border-top: 1px solid var(--line);
  padding-top: 8px;
  margin-top: 32px;
}
.example h2 {
  margin-top: 16px;
}
.example .frame {
  display: block;
  width: 100%;
  height: 440px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}
.example .frame.tall {
  height: 620px;
}
.example .meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 12px;
  align-items: baseline;
  margin: 14px 0 4px;
}
.example h3 {
  margin: 0;
}

footer {
  border-top: 1px solid var(--line);
  padding: 18px 0 28px;
  color: var(--fg-soft);
  font-size: 14px;
}
footer p {
  margin: 0 0 4px;
}

@media (max-width: 560px) {
  .top .wrap {
    gap: 6px 12px;
  }
  .nav {
    order: 3;
    flex-basis: 100%;
  }
  .example .frame,
  .example .frame.tall {
    height: 520px;
  }
  .toolbar .sep {
    display: none;
  }
}