:root {
  color-scheme: dark;
  --background: #090a0c;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.085);
  --border: rgba(255, 255, 255, 0.13);
  --text: #f7f7f2;
  /* The one red in the interface: a failing default branch, and nothing else.
     Mirrors palette.rs so the SVG fog, the WebGPU fog and the toast are the
     same colour. */
  --failure: #f4364c;
  /* Global privacy semantic. Mirrors `PRIVATE_HEX` in palette.rs. */
  --private: #d7a34a;
  --muted: #a3a5ad;
  --accent: #8ec5ff;
  --accent-soft: rgba(142, 197, 255, 0.18);
  --danger: #ff9c9c;
  --max-width: 1380px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--background);
  color: var(--text);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent 26rem),
    var(--background);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.ambient {
  position: fixed;
  z-index: -1;
  width: 30rem;
  height: 30rem;
  border-radius: 999px;
  filter: blur(110px);
  opacity: 0.14;
  pointer-events: none;
}

.ambient-one {
  top: -14rem;
  right: -8rem;
  background: var(--accent);
}

.ambient-two {
  bottom: -20rem;
  left: -12rem;
  background: #8373ff;
}

.topbar,
footer,
main {
  width: min(calc(100% - 1.25rem), var(--max-width));
  margin-inline: auto;
}

.topbar {
  display: flex;
  min-height: 4.5rem;
  padding: 0.9rem 0;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 720;
  letter-spacing: -0.02em;
}

.brand-mark {
  color: var(--accent);
  font-size: 1.15rem;
}

.fork-switcher {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.fork-switcher::-webkit-scrollbar {
  display: none;
}

.fork-switcher a {
  padding: 0.62rem 0.78rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.76rem;
  white-space: nowrap;
  transition: background 160ms ease, color 160ms ease;
}

.fork-switcher a:hover,
.fork-switcher a[aria-current] {
  color: var(--text);
  background: var(--surface-strong);
}

main {
  outline: none;
}

.shell-intro {
  display: grid;
  padding: clamp(3rem, 9vw, 7rem) 0 clamp(2.75rem, 7vw, 5.5rem);
  gap: 2rem;
}

.route,
.kicker,
.document-provenance,
.node-metadata dt,
.graph-status,
.accessible-graph summary,
footer {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

.route,
.kicker {
  margin: 0;
  color: var(--muted);
  font-size: 0.73rem;
  letter-spacing: 0.065em;
}

.hero__signal {
  display: flex;
  margin: 1.1rem 0 0;
  align-items: center;
  gap: 0.7rem;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 680;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.pulse {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 0.32rem var(--accent-soft);
}

h1 {
  max-width: 12ch;
  margin: 1rem 0 0;
  font-size: clamp(3.35rem, 17vw, 8rem);
  font-weight: 760;
  letter-spacing: -0.075em;
  line-height: 0.88;
}

.shell-intro__copy {
  max-width: 38rem;
}

.statement {
  margin: 0;
  font-size: clamp(1.28rem, 5vw, 1.85rem);
  letter-spacing: -0.035em;
  line-height: 1.16;
}

.description {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.primary-action {
  display: inline-flex;
  width: 100%;
  margin-top: 1.5rem;
  padding: 0.9rem 1rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  border-radius: 0.9rem;
  color: #090a0c;
  background: var(--accent);
  font-size: 0.84rem;
  transition: transform 160ms ease;
}

.primary-action:hover {
  transform: translateY(-2px);
}

.graph-section {
  padding: 2.5rem 0 5rem;
  border-top: 1px solid var(--border);
}

.section-heading {
  display: grid;
  gap: 1.5rem;
}

.section-heading h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(2rem, 10vw, 4.5rem);
  letter-spacing: -0.065em;
}

/* One line, always. Wrapping this row is what pushed the graph itself down a
   phone screen: every extra line came out of the render surface below it. It
   scrolls sideways instead, with the scrollbar hidden because the chips already
   read as a strip continuing past the edge. */
.graph-status {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  -ms-overflow-style: none;
  color: var(--muted);
  font-size: 0.68rem;
}

.graph-status::-webkit-scrollbar {
  display: none;
}

.graph-status > * {
  flex: 0 0 auto;
  white-space: nowrap;
}

.graph-status span,
.graph-status button {
  min-height: 2rem;
  padding: 0.48rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: inherit;
}

.graph-status button {
  cursor: pointer;
}

.graph-status button:disabled {
  cursor: wait;
  opacity: 0.5;
}

.error-banner {
  display: grid;
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  gap: 0.25rem;
  border: 1px solid color-mix(in srgb, var(--danger), transparent 45%);
  border-radius: 0.9rem;
  color: var(--danger);
  background: color-mix(in srgb, var(--danger), transparent 92%);
  font-size: 0.82rem;
}

.graph-layout {
  display: grid;
  margin-top: 1.25rem;
  gap: 0.85rem;
}

.graph-stage,
.node-details {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background: var(--surface);
  overflow: hidden;
}

.graph-stage {
  min-height: 28rem;
}

.renderer-surface {
  position: relative;
  width: 100%;
  height: min(64vh, 42rem);
  min-height: 28rem;
  background:
    radial-gradient(circle at 50% 45%, var(--accent-soft), transparent 32%),
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
}

.renderer-surface canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: manipulation;
}

.renderer-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.75rem;
  pointer-events: none;
}

.node-details {
  display: flex;
  min-height: 24rem;
  flex-direction: column;
}

.node-details__empty {
  margin: auto 0;
  padding: 1.25rem;
}

.node-details__empty h2,
.node-details__header h2 {
  margin: 0.5rem 0 0;
  font-size: 1.75rem;
  letter-spacing: -0.045em;
}

.node-details__empty p:last-child,
.node-details__note {
  color: var(--muted);
  line-height: 1.65;
}

.node-details__header {
  display: flex;
  padding: 1.15rem;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}

.node-details--private .kicker,
.document-state--private {
  color: var(--private);
}

.icon-link {
  display: grid;
  width: 2.4rem;
  height: 2.4rem;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent);
}

.node-metadata {
  display: grid;
  margin: 0;
  padding: 0.8rem 1.15rem 1.05rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  border-bottom: 1px solid var(--border);
}

.node-metadata div {
  min-width: 0;
}

.node-metadata dt {
  color: var(--muted);
  font-size: 0.63rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.node-metadata dd {
  margin: 0.28rem 0 0;
  overflow-wrap: anywhere;
  font-size: 0.82rem;
}

/* Failing checks on work in flight, each one a link to the run that failed: a
   red mark the visitor cannot open is a dead end. */
.node-impacts {
  padding: 0.75rem 1.15rem 0.85rem;
  border-bottom: 1px solid var(--border);
}

.node-impacts ul {
  margin: 0.45rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
}

.node-impacts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.82rem;
}

.node-impacts a {
  color: color-mix(in srgb, var(--failure), white 22%);
  overflow-wrap: anywhere;
}

.node-impacts span {
  color: var(--muted);
  font-size: 0.7rem;
  white-space: nowrap;
}

.document-panel {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
}

.document-tabs {
  display: flex;
  padding: 0.7rem;
  gap: 0.35rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
}

.document-tabs button {
  padding: 0.55rem 0.72rem;
  border: 1px solid transparent;
  border-radius: 0.65rem;
  color: var(--muted);
  background: transparent;
  white-space: nowrap;
  cursor: pointer;
}

.document-tabs button[aria-selected="true"] {
  border-color: var(--border);
  color: var(--text);
  background: var(--surface-strong);
}

.document-provenance {
  display: grid;
  margin-bottom: 1rem;
  gap: 0.2rem;
  color: var(--muted);
  font-size: 0.62rem;
  overflow-wrap: anywhere;
}

.markdown {
  color: #deded9;
  font-size: 0.9rem;
  line-height: 1.68;
  overflow-wrap: anywhere;
}

.markdown > :first-child {
  margin-top: 0;
}

.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4 {
  margin: 1.5em 0 0.55em;
  color: var(--text);
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.markdown h1 {
  font-size: 1.6rem;
}

.markdown h2 {
  font-size: 1.3rem;
}

.markdown h3,
.markdown h4 {
  font-size: 1.08rem;
}

.markdown p,
.markdown ul,
.markdown ol,
.markdown blockquote {
  margin: 0.85rem 0;
}

.markdown ul,
.markdown ol {
  padding-left: 1.35rem;
}

.markdown blockquote {
  padding-left: 0.9rem;
  border-left: 2px solid var(--accent);
  color: var(--muted);
}

.markdown pre {
  max-width: 100%;
  padding: 0.9rem;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: #060709;
}

.markdown code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.86em;
}

.markdown p code,
.markdown li code {
  padding: 0.15em 0.35em;
  border-radius: 0.3rem;
  background: var(--surface-strong);
}

/* Raw HTML is neither honoured nor dropped: it is shown as the source it is,
   quietly, so a decorative wrapper reads as markup rather than as broken prose
   and a <details> section cannot vanish without trace. */
.markdown pre.markdown__raw {
  position: relative;
  padding-block-start: 1.6rem;
  border: 1px dashed var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 0.76em;
  opacity: 0.75;
}

.markdown pre.markdown__raw::before {
  position: absolute;
  top: 0.45rem;
  left: 0.75rem;
  content: "unrendered html";
  color: var(--muted);
  font-size: 0.72em;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
}

.markdown code.markdown__raw {
  color: var(--muted);
  opacity: 0.8;
}

/* Images resolve to raw.githubusercontent.com, which `img-src 'self' data:`
   forbids, so the relay renders them as explicit asset links. */
.markdown__asset {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.1rem 0.45rem;
  border: 1px dashed var(--border);
  border-radius: 0.4rem;
  color: var(--muted);
  font-size: 0.82em;
}

.markdown__asset::before {
  content: "\2750";
  opacity: 0.7;
}

.markdown__asset:hover,
.markdown__asset:focus-visible {
  border-style: solid;
  color: var(--text);
}

.markdown__task {
  margin-inline-end: 0.15rem;
  color: var(--muted);
}

.markdown a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.accessible-graph {
  margin-top: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
}

.accessible-graph summary {
  padding: 0.95rem 1rem;
  color: var(--muted);
  font-size: 0.72rem;
  cursor: pointer;
}

.accessible-graph > p {
  margin: 0;
  padding: 0 1rem 0.75rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.accessible-graph ol {
  display: grid;
  margin: 0;
  padding: 0.65rem;
  grid-template-columns: 1fr;
  gap: 0.4rem;
  list-style: none;
  border-top: 1px solid var(--border);
}

.accessible-graph button,
.accessible-graph__private {
  display: grid;
  width: 100%;
  padding: 0.7rem 0.75rem;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.2rem 0.8rem;
  border: 1px solid transparent;
  border-radius: 0.7rem;
  text-align: left;
  color: var(--text);
  background: transparent;
}

.accessible-graph button {
  cursor: pointer;
}

.accessible-graph button:hover,
.accessible-graph button:focus-visible,
.accessible-graph button[aria-current] {
  border-color: var(--border);
  background: var(--surface-strong);
  outline: none;
}

.accessible-graph__private {
  border-color: color-mix(in srgb, var(--private), transparent 72%);
  color: var(--private);
  background: color-mix(in srgb, var(--private), transparent 94%);
  cursor: default;
}

.accessible-graph button strong,
.accessible-graph__private strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.accessible-graph button span,
.accessible-graph__private span {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.65rem;
}

.accessible-graph__private span {
  color: var(--private);
}

.accessible-graph button span:last-child,
.accessible-graph__private span:last-child {
  grid-column: 1 / -1;
}

/* `#application-main` carries tabindex="-1" as a focus target; this is the
   control that actually reaches it, past the decorative field and the topbar. */
.skip-link {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  padding: 0.6rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 0 0 0.75rem 0;
  background: var(--surface-strong);
  color: var(--text);
  font-size: 0.78rem;
  transform: translateY(-150%);
  transition: transform 140ms ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

html[data-accent="sky"] {
  --accent: #8ec5ff;
  --accent-soft: rgba(142, 197, 255, 0.18);
}

html[data-accent="violet"] {
  --accent: #a78bfa;
  --accent-soft: rgba(167, 139, 250, 0.18);
}

html[data-accent="amber"] {
  --accent: #f8b86b;
  --accent-soft: rgba(248, 184, 107, 0.18);
}

html[data-accent="mint"] {
  --accent: #63e6be;
  --accent-soft: rgba(99, 230, 190, 0.18);
}

footer {
  display: flex;
  padding: 1.25rem 0 calc(1.25rem + env(safe-area-inset-bottom));
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.68rem;
}

@media (min-width: 720px) {
  .topbar {
    min-height: 4.75rem;
    padding: 0;
    flex-direction: row;
    align-items: center;
  }

  .fork-switcher {
    width: auto;
  }

  .shell-intro {
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 31rem);
    align-items: end;
    gap: 3rem;
  }

  .primary-action {
    width: auto;
    min-width: 14rem;
  }

  .section-heading {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .graph-status {
    /* Never `justify-content: flex-end` on a scroll container: it puts the
       first chips out of reach. The heading grid already right-aligns this
       column. */
    margin-left: auto;
  }

  .accessible-graph ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .graph-layout {
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 27rem);
  }

  .node-details {
    max-height: min(64vh, 42rem);
  }

  .accessible-graph ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}