:root {
  color-scheme: dark;
  --site-header-height: 6.75rem;
  --gallery-chrome: 10.5rem;
  --bg: #101722;
  --bg-raised: #161e2a;
  --border: #30363d;
  --border-strong: #455160;
  --fg: #e6edf3;
  --fg-muted: #9da7b3;
  --fg-faint: #8b949e;
  --gold: #e6c96f;
  --gold-soft: hsla(46, 88%, 70%, .22);
  --gold-border: #6f633d;
  --link: #79c0ff;
}

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

html,
body {
  background: var(--bg);
  margin: 0;
}

body {
  -webkit-font-smoothing: antialiased;
  color: var(--fg);
  font: 16px/1.5 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  min-height: 100vh;
  overflow-x: clip;
}

::selection {
  background: hsla(46, 88%, 70%, .3);
  color: #fff;
}

h1,
h2,
p {
  margin: 0;
}

a {
  color: var(--link);
  text-decoration-color: rgba(121, 192, 255, .5);
  text-underline-offset: 4px;
}

button {
  color: inherit;
  cursor: pointer;
  font: inherit;
}

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

.sr-only {
  border: 0;
  clip: rect(0, 0, 0, 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

/* Header */

.site-header {
  align-items: flex-start;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  inset: 0 0 auto;
  justify-content: space-between;
  padding: 1.25rem 1rem;
  position: fixed;
  z-index: 50;
}

.site-title h1 {
  color: #fff;
  font-size: 1.875rem;
  font-weight: 600;
  line-height: 2.25rem;
}

.site-title p {
  color: var(--fg-muted);
  margin-top: .5rem;
}

.site-links {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.project-link,
.theme-picker select {
  align-items: center;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: .25rem;
  color: var(--fg);
  display: inline-flex;
  gap: .5rem;
  height: 2.125rem;
  line-height: 1;
  padding: 0 .75rem;
  text-decoration: none;
  transition: border-color .16s ease, background-color .16s ease;
}

.project-link:hover,
.theme-picker select:hover {
  background: var(--bg-raised);
  border-color: var(--fg-faint);
}

.project-link svg {
  color: var(--fg-faint);
  height: 1.25rem;
  width: 1.25rem;
}

.theme-picker {
  align-items: center;
  color: var(--fg-muted);
  display: inline-flex;
  gap: .5rem;
}

.theme-picker select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg-faint) 50%), linear-gradient(135deg, var(--fg-faint) 50%, transparent 50%);
  background-position: calc(100% - .95rem) 50%, calc(100% - .7rem) 50%;
  background-repeat: no-repeat;
  background-size: .25rem .25rem;
  cursor: pointer;
  font-size: .9375rem;
  max-width: 17rem;
  overflow: hidden;
  padding-right: 1.9rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.theme-picker option,
.theme-picker optgroup {
  background: var(--bg-raised);
  color: var(--fg);
}

/* Gallery */

.site-shell {
  padding: var(--site-header-height) 1rem 0;
  width: 100%;
}

.gallery-scroll {
  height: 800vh;
}

.gallery-sticky {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr) 3.5rem;
  height: calc(100dvh - var(--site-header-height));
  overflow: hidden;
  position: sticky;
  top: var(--site-header-height);
}

.gallery-viewport,
.gallery-track {
  height: 100%;
  overflow: hidden;
  position: relative;
}

.feature-panel {
  display: flex;
  flex-direction: column;
  inset: 0;
  padding-top: 1.5rem;
  position: absolute;
  visibility: hidden;
  width: 100%;
}

.feature-panel:first-child,
.feature-panel[data-active] {
  visibility: visible;
}

@media (min-width: 1024px) {
  html[data-site-ready] .feature-panel:first-child:not([data-active]) {
    visibility: hidden;
  }
}

.comparison-content {
  margin-inline: auto;
  width: min(100%, calc((100dvh - var(--site-header-height) - var(--gallery-chrome)) * 1.6));
}

.feature-heading {
  align-items: flex-start;
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.feature-heading > div {
  flex: 1;
  min-width: 0;
}

.feature-number {
  color: var(--gold);
  font-size: .875rem;
  line-height: 1.25rem;
  margin-top: .75rem;
}

.feature-heading h2 {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 2rem;
}

.feature-heading p {
  color: var(--fg-muted);
  line-height: 1.75rem;
  margin-top: .25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.comparison-card {
  aspect-ratio: 8 / 5;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: .5rem;
  box-shadow: 0 1.5rem 3rem -1.5rem rgb(0 0 0 / 60%);
  overflow: hidden;
  position: relative;
}

html[data-site-ready] .comparison-card {
  cursor: pointer;
}

.demo-frame,
.comparison-card noscript,
.comparison-card noscript img {
  left: 0;
  position: absolute;
  top: 0;
}

.comparison-card noscript,
.comparison-card noscript img {
  height: 100%;
  width: 100%;
}

@keyframes comparison-card-pulse {
  0% { box-shadow: 0 0 0 0 hsla(46, 88%, 70%, .85), 0 1.5rem 3rem -1.5rem rgb(0 0 0 / 60%); }
  100% { box-shadow: 0 0 0 .75rem hsla(46, 88%, 70%, 0), 0 1.5rem 3rem -1.5rem rgb(0 0 0 / 60%); }
}

.demo-replay {
  align-items: center;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border: 1px solid var(--gold-border);
  border-radius: 50%;
  box-shadow: 0 .5rem 1.5rem rgb(0 0 0 / 45%);
  color: var(--gold);
  display: flex;
  height: 4rem;
  justify-content: center;
  left: 50%;
  padding: 0 0 0 .2rem;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  transition: background-color .16s ease, border-color .16s ease;
  width: 4rem;
  z-index: 2;
}

.demo-replay:hover {
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  border-color: var(--gold);
}

.demo-replay[hidden] {
  display: none;
}

.demo-frame {
  border: 0;
  height: 800px;
  pointer-events: none;
  transform: scale(var(--demo-scale, 1));
  transform-origin: left top;
  width: 1280px;
}

.gallery-navigation {
  align-items: center;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: .25rem;
  color: var(--gold);
  display: flex;
  height: 3rem;
  justify-content: center;
  margin: auto 0;
  padding: 0;
  transition: border-color .16s ease, opacity .16s ease;
  width: 3rem;
}

.gallery-navigation:last-of-type {
  justify-self: end;
}

.gallery-navigation:not(:disabled):hover {
  border-color: var(--gold-border);
}

.gallery-navigation kbd {
  font-family: inherit;
  font-size: 1.5rem;
  line-height: 1;
}

.gallery-navigation:disabled {
  cursor: default;
  opacity: .2;
}

/* Toggle */

.comparison-toggle {
  background: transparent;
  border: 0;
  height: 2.5rem;
  padding: 0;
  position: fixed;
  right: 1.5rem;
  top: calc(var(--site-header-height) + 1rem);
  width: 11rem;
  z-index: 50;
}

.comparison-toggle::before {
  background: var(--gold-soft);
  border: 1px solid var(--gold-border);
  border-radius: 9999px;
  box-shadow: 0 .5rem 1.5rem rgb(0 0 0 / 35%);
  content: "";
  height: 1.75rem;
  inset: 50% 0 auto;
  position: absolute;
  transform: translateY(-50%);
  transition: background-color .16s ease, border-color .16s ease;
}

.comparison-toggle:is(:hover, :focus-visible)::before {
  background: hsla(46, 88%, 70%, .28);
}

.comparison-label {
  color: var(--fg-faint);
  font-weight: 600;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  transition: color .16s ease;
  z-index: 20;
}

.comparison-label-off {
  left: .75rem;
}

.comparison-label-on {
  right: .75rem;
}

.comparison-toggle[aria-checked="false"] .comparison-label-off,
.comparison-toggle[aria-checked="true"] .comparison-label-on {
  color: var(--gold);
}

.comparison-moon {
  align-items: center;
  display: flex;
  filter: drop-shadow(0 3px 4px rgb(0 0 0 / 28%));
  font-size: 2.5rem;
  height: 2.5rem;
  justify-content: center;
  left: 3rem;
  line-height: 1;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.5rem;
  will-change: left, transform;
  z-index: 10;
}

.comparison-toggle[aria-checked="true"] .comparison-moon {
  left: calc(100% - 5.5rem);
}

/* The moon arcs over the switch when turning on and under it when turning off. */
@keyframes moon-orbit {
  0% { left: 3rem; transform: translateY(-50%); }
  12.5% { left: 3.095rem; transform: translateY(calc(-50% + var(--orbit-arc) * .478rem)); }
  25% { left: 3.366rem; transform: translateY(calc(-50% + var(--orbit-arc) * .884rem)); }
  37.5% { left: 3.772rem; transform: translateY(calc(-50% + var(--orbit-arc) * 1.155rem)); }
  50% { left: 4.25rem; transform: translateY(calc(-50% + var(--orbit-arc) * 1.25rem)); }
  62.5% { left: 4.728rem; transform: translateY(calc(-50% + var(--orbit-arc) * 1.155rem)); }
  75% { left: 5.134rem; transform: translateY(calc(-50% + var(--orbit-arc) * .884rem)); }
  87.5% { left: 5.405rem; transform: translateY(calc(-50% + var(--orbit-arc) * .478rem)); }
  100% { left: calc(100% - 5.5rem); transform: translateY(-50%); }
}

@keyframes case-arrive-next { from { transform: translateX(2rem); } }
@keyframes case-arrive-previous { from { transform: translateX(-2rem); } }

@media (prefers-reduced-motion: no-preference) {
  .comparison-card-pulse { animation: comparison-card-pulse 520ms ease-out; }
  .comparison-toggle[data-orbit="on"] .comparison-moon { --orbit-arc: -1; animation: moon-orbit 360ms linear; }
  .comparison-toggle[data-orbit="off"] .comparison-moon { --orbit-arc: 1; animation: moon-orbit 360ms linear reverse; }
  .gallery-track[data-direction="next"] .feature-panel[data-active] .comparison-card { animation: case-arrive-next 100ms cubic-bezier(.2, .9, .35, 1); }
  .gallery-track[data-direction="previous"] .feature-panel[data-active] .comparison-card { animation: case-arrive-previous 100ms cubic-bezier(.2, .9, .35, 1); }
}

/* Narrow screens: one long page instead of the scroll-driven gallery */

@media (max-width: 1023px) {
  .gallery-scroll { height: auto; }
  .gallery-sticky { display: block; height: auto; overflow: visible; position: static; }
  .gallery-viewport, .gallery-track { height: auto; overflow: visible; }
  .feature-panel { border-top: 1px solid var(--border); padding: 2.5rem 0; position: relative; scroll-margin-top: var(--site-header-height); visibility: visible; }
  .feature-panel:first-child { border-top: 0; padding-top: 4.5rem; }
  .feature-heading p { overflow: visible; white-space: normal; }
  .gallery-navigation { display: none; }
  .comparison-content { width: 100%; }
}

@media (max-width: 639px) {
  .site-links { width: 100%; }
  .theme-picker { flex: 1 1 100%; }
  .theme-picker select { flex: 1; max-width: none; }
  .comparison-toggle { right: 1rem; top: calc(var(--site-header-height) + .5rem); }
}