:root {
  color-scheme: dark;
  --paper: #0f1214;
  --panel: #191d20;
  --panel-highlight: #161a1d;
  --ink: #eee7dc;
  --body: #d7d0c6;
  --muted: #a79d91;
  --border: #343b3e;
  --rule: #4a5357;
  --accent: #82d5c1;
  --accent-hover: #a8ead9;
  --code: #0b0e10;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

.nerd-mode-control {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 10;
  display: inline-flex;
  gap: 10px;
  align-items: center;
  min-height: 42px;
  box-sizing: border-box;
  padding: 0 14px 0 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  box-shadow: 0 10px 30px rgb(0 0 0 / 0.28);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  user-select: none;
}

.nerd-mode-control:hover,
.nerd-mode-control:focus-within {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.nerd-mode-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.nerd-mode-switch {
  position: relative;
  width: 38px;
  height: 22px;
  box-sizing: border-box;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--code);
  transition: border-color 160ms ease, background 160ms ease;
}

.nerd-mode-switch::before {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--muted);
  content: "";
  transition: background 160ms ease, transform 160ms ease;
}

.nerd-mode-control input:checked + .nerd-mode-switch {
  border-color: var(--accent);
  background: var(--panel-highlight);
}

.nerd-mode-control input:checked + .nerd-mode-switch::before {
  background: var(--accent);
  transform: translateX(16px);
}

.nerd-mode-control input:focus-visible + .nerd-mode-switch {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

body:not(.nerd-mode) .nerd-mode {
  display: none;
}

body.nerd-mode .nerd-mode {
  animation: nerd-mode-fade-in 180ms ease-out;
}

@keyframes nerd-mode-fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 72px 22px 64px;
}

h1,
h2,
h3,
h4,
h5 {
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 16px;
  font-size: 2.5rem;
}

h2 {
  margin: 64px 0 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  font-size: 1.65rem;
}

h3 {
  margin: 0 0 16px;
  font-size: 1.35rem;
}

h4 {
  margin: 30px 0 8px;
  color: var(--ink);
  font-size: 1rem;
}

h5 {
  margin: 20px 0 8px;
  color: var(--ink);
  font-size: 0.9rem;
}

p {
  margin: 0 0 16px;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover,
a:focus {
  color: var(--accent-hover);
}

ul {
  padding-left: 22px;
}

li + li {
  margin-top: 6px;
}

.intro {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 28px;
}

.byline {
  color: var(--muted);
  font-size: 0.96rem;
}

.try-it {
  margin-top: 34px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
}

.try-it h2 {
  margin-top: 0;
  border-bottom-color: var(--border);
}

.try-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 18px;
  margin-top: 22px;
}

.try-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-highlight);
}

.try-card h3 {
  margin-bottom: 12px;
  font-size: 1.1rem;
}

.publish-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 16px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--code);
}

.publish-tab {
  min-height: 38px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.publish-tab[aria-selected="true"] {
  background: var(--panel);
  color: var(--ink);
}

.publish-tab:focus,
.publish-tab:hover {
  color: var(--accent-hover);
}

.publish-panel[hidden] {
  display: none;
}

.try-meta {
  display: grid;
  gap: 10px;
  margin: 0;
  color: var(--muted);
}

.try-meta > div {
  display: grid;
  gap: 2px;
}

.try-meta code {
  overflow-wrap: anywhere;
  color: var(--ink);
}

.token-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: stretch;
}

.token-field code {
  display: block;
  width: 100%;
  box-sizing: border-box;
  overflow-x: auto;
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--code);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  line-height: 1.4;
  white-space: nowrap;
  user-select: all;
}

.copy-token {
  min-height: 38px;
  width: 100%;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.copy-token:hover,
.copy-token:focus {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.try-video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--code);
}

.publish-preview {
  margin-top: 12px;
}

.try-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 14px;
}

.button-link,
button.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: var(--paper);
  font: inherit;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
}

.button-link:hover,
.button-link:focus,
button.button-link:hover,
button.button-link:focus {
  border-color: var(--accent-hover);
  background: var(--accent-hover);
  color: var(--paper);
}

.button-link.secondary {
  background: transparent;
  color: var(--accent);
}

.button-link.secondary:hover,
.button-link.secondary:focus {
  background: var(--panel);
  color: var(--accent-hover);
}

button.button-link:disabled {
  cursor: wait;
  opacity: 0.68;
}

.try-status {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.try-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.use-case-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
}

.use-case-card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.use-case-card h3 a {
  color: inherit;
}

.use-case-card h3 a:hover,
.use-case-card h3 a:focus {
  color: var(--accent-hover);
}

.use-case-card p {
  margin-bottom: 16px;
  font-size: 0.95rem;
  flex-grow: 1;
}

.use-case-card .cta {
  font-weight: 700;
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .use-case-grid {
    grid-template-columns: 1fr;
  }
}

.explanations {
  margin-top: 56px;
}

article {
  margin-top: 58px;
  padding: 26px 28px 30px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: var(--panel-highlight);
  scroll-margin-top: 24px;
}

.explanations article:first-of-type {
  margin-top: 24px;
}

article > h3 {
  display: inline-block;
  margin: -2px 0 18px;
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--paper);
}

article > h3::before {
  content: none;
}

article:target {
  border-color: var(--accent);
  border-left-color: var(--accent);
  background: var(--panel);
}

pre {
  overflow-x: auto;
  margin: 24px 0 32px;
  padding: 18px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--code);
}

.mermaid {
  text-align: center;
}

.mermaid svg {
  max-width: 100%;
  height: auto;
}

@media (max-width: 640px) {
  main {
    padding: 72px 18px 48px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.35rem;
  }

  .try-it {
    padding: 16px;
  }

  .try-grid {
    grid-template-columns: 1fr;
  }

  article {
    padding: 22px 18px 24px;
  }
}