:root {
  color-scheme: dark;
  --page: #0d1117;
  --panel: #161b22;
  --border: #30363d;
  --text: #f0f6fc;
  --muted: #8b949e;
  --focus: #58a6ff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--page);
  color: var(--text);
}

button,
select,
input {
  font: inherit;
}

main {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: clamp(1rem, 2.5vw, 2.5rem);
}

.site-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 0 1.5rem;
  border-bottom: 1px solid var(--border);
}

.product-name {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
}

h1 {
  margin: 0;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.highlighter-intros {
  display: grid;
  gap: 0.2rem;
  max-width: 44rem;
  margin: 0.65rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.demo-info,
.comparison,
.technical-comparison {
  width: min(100%, 48rem);
  margin-inline: auto;
}

.highlighter-intros p {
  margin: 0;
}

.highlighter-intros strong {
  color: var(--text);
  font-weight: 600;
}

.language-picker {
  flex: 0 0 auto;
}

.picker-label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 500;
}

.language-tabs {
  display: inline-flex;
  padding: 0.2rem;
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  background: var(--panel);
}

.language-tabs button {
  border: 0;
  border-radius: 0.25rem;
  padding: 0.45rem 0.75rem;
  background: transparent;
  color: var(--muted);
  font-size: 0.82rem;
  cursor: pointer;
}

.language-tabs button:hover {
  color: var(--text);
}

.language-tabs button[aria-selected="true"] {
  background: var(--text);
  color: var(--page);
}

.language-tabs button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.demo-info {
  padding: 0.8rem 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.demo-info p {
  margin: 0;
}

.demo-info #status:not(:empty) {
  margin-top: 0.4rem;
}

.comparison {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  background: var(--panel);
}

.comparison-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
}

.comparison-picker {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.comparison-picker select,
.comparison-value {
  display: flex;
  align-items: center;
  min-height: 2rem;
  border: 1px solid var(--border);
  border-radius: 0.3rem;
  padding: 0.3rem 2rem 0.3rem 0.55rem;
  background: var(--page);
  color: var(--text);
  font-size: 0.78rem;
}

.comparison-value {
  padding-right: 0.55rem;
}

.comparison-picker select:focus-visible,
.scrubber-line:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.comparison-picker select:disabled {
  cursor: wait;
  opacity: 0.65;
}

.code-viewport {
  --split: 35%;
  position: relative;
  height: clamp(24rem, 65vh, 44rem);
  background: var(--arb-bg-dark);
}

pre {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 1rem;
  overflow: auto;
  color: var(--arb-fg-dark);
  font:
    0.78rem/1.6 "SFMono-Regular",
    Consolas,
    "Liberation Mono",
    monospace;
  scrollbar-color: var(--border) transparent;
  tab-size: 4;
}

code {
  display: block;
  width: max-content;
  min-width: 100%;
}

.lighter-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  clip-path: inset(0 0 calc(100% - var(--split)) 0);
  pointer-events: none;
}

.lighter-layer pre {
  overflow: hidden;
  background: var(--arb-bg-dark);
}

.code-viewport.is-scrubbing {
  user-select: none;
}

.scrubber-line {
  position: absolute;
  top: var(--split);
  right: 0;
  left: 0;
  height: 2px;
  background: var(--text);
  box-shadow: 0 0 0 1px rgb(13 17 23 / 60%);
  cursor: ns-resize;
  touch-action: none;
  transform: translateY(-1px);
}

.scrubber-line::before {
  position: absolute;
  inset: 50% 0 auto;
  height: 2rem;
  content: "";
  transform: translateY(-50%);
}

.scrubber-line::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1.7rem;
  height: 0.55rem;
  border: 2px solid var(--text);
  border-radius: 999px;
  background: var(--page);
  content: "";
  transform: translate(-50%, -50%);
}

.technical-comparison {
  padding: 1rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
}

.footer-content {
  display: flex;
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 1.25rem clamp(1rem, 2.5vw, 2.5rem);
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
}

.footer-content p {
  margin: 0;
  color: var(--text);
  font-weight: 600;
}

.footer-content ul {
  display: flex;
  margin: 0;
  padding: 0;
  gap: 1.5rem;
  list-style: none;
}

.footer-content li {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
}

.footer-content li span {
  color: var(--text);
}

.footer-content a {
  color: var(--muted);
  text-underline-offset: 0.2em;
}

.footer-content a:hover {
  color: var(--text);
}

.footer-content a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

@media (max-width: 820px) {
  .site-header {
    align-items: start;
    flex-direction: column;
    gap: 1rem;
  }

  .language-picker,
  .language-tabs {
    width: 100%;
  }

  .language-tabs button {
    flex: 1;
  }

  .comparison-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .comparison-picker {
    align-items: stretch;
    flex-direction: column;
    gap: 0.35rem;
  }

  .comparison-picker select,
  .comparison-value {
    width: 100%;
    min-height: 2.75rem;
  }

  pre {
    padding: 0.85rem;
    font-size: 0.72rem;
  }

  .code-viewport {
    height: clamp(22rem, 62vh, 36rem);
  }

  .scrubber-line::before {
    height: 2.75rem;
  }

  .footer-content,
  .footer-content ul {
    align-items: stretch;
    flex-direction: column;
    gap: 0.75rem;
  }

  .footer-content li {
    justify-content: space-between;
  }

  .footer-content li span {
    margin-right: auto;
  }
}