:root {
  --bg: #121317;
  --panel: #18191e;
  --panel-raised: #1e2026;
  --line: rgb(255 255 255 / 0.08);
  --line-strong: rgb(255 255 255 / 0.14);
  --ink: #ececee;
  --muted: #a1a1aa;
  --faint: #71717a;
  --code-bg: #0d0d0f;
  --red: #ff5757;
  --orange: #ff914d;
  --gold: #ffbd59;
  --ok: #4ade80;
  --fail: #f87171;
  --gradient: linear-gradient(90deg, var(--red), var(--orange), var(--gold));
  --serif: "Iowan Old Style", "New York", ui-serif, Georgia, Cambria, serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  color-scheme: dark;
}

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

[hidden] { display: none !important; }

html { background: var(--bg); color: var(--ink); -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font: 400 1.125rem/1.7 var(--sans);
  background:
    radial-gradient(ellipse at 100% 0%, rgb(255 87 87 / 0.08), transparent 45%),
    radial-gradient(ellipse at 0% 30%, rgb(255 189 89 / 0.035), transparent 40%),
    var(--bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration-color: var(--orange); text-decoration-thickness: 1.5px; text-underline-offset: 3px; transition: color 150ms, text-decoration-color 150ms; }
a:hover { color: var(--gold); text-decoration-color: var(--gold); }

code {
  font: 500 0.86em/1 var(--mono);
  padding: 0.15em 0.35em;
  border-radius: 0.3em;
  background: rgb(255 255 255 / 0.06);
  color: #ffd9bf;
}

pre { margin: 0; overflow-x: auto; }
pre code { display: block; padding: 0; background: none; color: #e6e6e6; font-size: 0.84rem; line-height: 1.65; font-weight: 400; }

/* Syntax */
.t-kw, .t-op { color: #ff5757; }
.t-mod { color: #ffbd59; }
.t-fun { color: #ffd9bf; }
.t-atom, .t-key { color: #ff914d; }
.t-num, .t-type { color: #ffd89b; }
.t-s { color: #6cb6ff; }
.t-c { color: var(--faint); font-style: italic; }

/* Lines picked out in a code block with `data-highlight`, or added in a diff. The code is at
   least as wide as the block, and as wide as its longest line, so that their backgrounds go all
   the way across when it scrolls sideways. */
pre .line { display: block; }
pre:has(.line) code { display: inline-block; min-width: 100%; }
pre .line.is-highlighted { margin: 0 -1.4rem; padding: 0 1.4rem; background: rgb(255 145 77 / 0.1); box-shadow: inset 3px 0 var(--orange); }

/* Site chrome */

.site-nav {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem clamp(1.25rem, 4vw, 3rem);
  font: 500 0.9rem var(--sans);
}

.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--ink); }
.site-home { display: inline-flex; align-items: center; gap: 0.6rem; margin-right: auto; color: var(--ink) !important; font-weight: 600; }
.site-home img { width: 1.6rem; height: 1.6rem; }

.site-footer {
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 3rem 1rem 4rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.site-footer a { color: var(--faint); text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

/* Hero */

.hero {
  position: relative;
  display: grid;
  min-height: min(92vh, 60rem);
  align-items: center;
  overflow: hidden;
  padding: 7rem clamp(1.25rem, 6vw, 6rem) 5rem;
  border-bottom: 1px solid var(--line);
}

/* A tangle of modules sorting itself out around a contract (see hero.js) */
.hero-graph {
  position: absolute;
  top: 50%;
  right: clamp(-4rem, -1vw, 1rem);
  width: min(54vw, 50rem);
  aspect-ratio: 1;
  translate: 0 -46%;
  pointer-events: none;
}

/* Narrow, the title goes at the top, and the graph underneath it */
@media (max-width: 760px) {
  .hero { align-items: start; }
  .hero-graph { top: auto; right: auto; bottom: 1.5rem; left: 50%; width: min(100vw, 30rem); translate: -50% 0; }
}

.hero-graph svg { display: block; width: 100%; height: 100%; overflow: visible; }

.hg-node rect { fill: var(--panel-raised); stroke: rgb(255 255 255 / 0.32); stroke-width: 0.24; }
.hg-node.is-lit rect, .hg-node.is-hit rect { stroke: var(--gold); }
.hg-node.is-lit rect { fill: rgb(255 145 77 / 0.45); }
.hg-node.is-hit rect { animation: hg-hit 900ms ease-out; }

.hg-line { fill: none; stroke: rgb(255 255 255 / 0.3); stroke-width: 0.24; stroke-linecap: round; stroke-dasharray: 1 1; }
.hg-head { fill: rgb(255 255 255 / 0.45); }
.hg-edge.is-cycle .hg-line { stroke: rgb(248 113 113 / 0.75); }
.hg-edge.is-cycle .hg-head { fill: var(--fail); }
.hg-clean .hg-line { stroke: rgb(255 145 77 / 0.6); }
.hg-clean .hg-head { fill: var(--orange); }

.hg-hub-scale { transform-box: fill-box; transform-origin: center; }
.hg-halo { fill: url(#hero-halo); }
.hg-core { fill: #3a2418; stroke: var(--orange); stroke-width: 0.35; filter: drop-shadow(0 0 5px rgb(255 145 77 / 0.7)); transform-box: fill-box; transform-origin: center; }
.hg-core.is-hit { animation: hg-emit 700ms ease-out; }
.hg-pulse { fill: var(--gold); filter: drop-shadow(0 0 4px rgb(255 189 89 / 0.9)); }

@keyframes hg-hit { from { fill: rgb(255 145 77 / 0.55); } }
@keyframes hg-emit { from { scale: 1.25; fill: rgb(255 145 77 / 0.6); } }

.hero-text { position: relative; max-width: 52rem; animation: rise 900ms var(--ease) both; }

.eyebrow {
  margin: 0 0 1rem;
  font: 600 0.85rem var(--sans);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero h1 {
  margin: 0;
  font: 300 clamp(3.2rem, 9vw, 7.5rem)/0.98 var(--serif);
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.byline { margin: 2rem 0 0; font-size: 0.9rem; color: var(--faint); }
.byline::before { content: ""; display: block; width: 3.5rem; height: 3px; margin-bottom: 1.25rem; border-radius: 9999px; background: var(--gradient); }

/* Article */

.article { padding: 4rem clamp(1.25rem, 4vw, 2rem) 6rem; }

.prose { max-width: 42rem; margin: 0 auto; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.4rem; }
.prose li { margin: 0 0 0.6rem; padding-left: 0.25rem; }
.prose ul { padding-left: 1.25rem; }
.prose ul li::marker { color: var(--orange); }
.lede { font-size: 1.3rem; line-height: 1.6; color: #f4f4f5; }
.lede::first-letter { float: left; margin: 0.08em 0.12em 0 0; font: 400 4.2em/0.8 var(--serif); color: var(--orange); }

.prose h2 {
  margin: 4.5rem 0 1.25rem;
  font: 400 clamp(2rem, 4vw, 2.6rem)/1.15 var(--serif);
  letter-spacing: -0.015em;
}

.scrolly + .prose h2:first-child { margin-top: 0; }

.prose h2::after { content: ""; display: block; width: 3rem; height: 3px; margin-top: 0.9rem; border-radius: 9999px; background: var(--gradient); }

figure { margin: 2.5rem auto; }
figure.wide { max-width: 64rem; }
figcaption { margin-top: 0.85rem; font-size: 0.85rem; color: var(--faint); text-align: center; }

.code-card {
  position: relative;
  max-width: 44rem;
  overflow: hidden;
  border-radius: 0.9rem;
  background: var(--code-bg);
  box-shadow: 0 30px 60px -30px rgb(0 0 0 / 0.8), inset 0 0 0 1px var(--line);
}

.code-card figcaption {
  margin: 0;
  padding: 0.7rem 1.25rem;
  border-bottom: 1px solid var(--line);
  font: 500 0.78rem var(--mono);
  color: var(--faint);
  text-align: left;
}

.code-card pre { padding: 1.2rem 1.4rem; }

.code-card.is-contract { box-shadow: 0 30px 60px -30px rgb(0 0 0 / 0.8), 0 0 50px -12px rgb(255 145 77 / 0.35), inset 0 0 0 1px rgb(255 145 77 / 0.55); }
.code-card.is-contract figcaption { color: var(--gold); }

/* Three files, the outer two depending on the one in the middle */
.contract { max-width: 44rem; margin: 2.5rem auto; }
.contract figure { margin: 0; }

.contract-link { display: flex; align-items: center; justify-content: center; gap: 0.6rem; height: 3.6rem; font-size: 0.8rem; color: var(--faint); }
.contract-link svg { width: 0.75rem; height: 2.75rem; }
.contract-link.is-up svg { scale: 1 -1; }
.contract-link-line { stroke: rgb(255 145 77 / 0.7); stroke-width: 1.5; }
.contract-link-head { fill: var(--orange); }

/* A pull request, made two ways */
.diff {
  padding: 1.5rem;
  border-radius: 1.1rem;
  background: var(--panel);
  box-shadow: 0 40px 80px -40px rgb(0 0 0 / 0.9), inset 0 0 0 1px var(--line);
}

.diff-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 1.5rem; margin-bottom: 1.25rem; }
.diff-title { margin: 0; font: 600 1.05rem var(--sans); }

.diff:has(input[value="hook"]:checked) .is-signal,
.diff:has(input[value="signal"]:checked) .is-hook { display: none; }

.diff-stat { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; margin: 0 0 1rem; font-size: 0.9rem; color: var(--muted); }
.diff-stat strong { color: var(--ink); font-weight: 600; }

.diff-file { overflow: hidden; margin-top: 0.75rem; border-radius: 0.6rem; background: var(--code-bg); box-shadow: inset 0 0 0 1px var(--line); }
.diff-path { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.25rem 1rem; margin: 0; padding: 0.55rem 1rem; border-bottom: 1px solid var(--line); font: 500 0.78rem var(--mono); color: var(--muted); }
.diff-owner { font: 600 0.72rem var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.diff-file pre { padding: 0.75rem 0; }
.diff-file pre code { font-size: 0.78rem; }
.diff-file .line { position: relative; padding: 0 1rem 0 2rem; }
.diff-file .line.is-added { background: rgb(74 222 128 / 0.1); }
.diff-file .line.is-removed { background: rgb(248 113 113 / 0.1); }
.diff-file .line.is-added::before, .diff-file .line.is-removed::before { position: absolute; left: 0.8rem; font-weight: 600; }
.diff-file .line.is-added::before { content: "+"; color: var(--ok); }
.diff-file .line.is-removed::before { content: "−"; color: var(--fail); }

/* Scrollytelling */

.scrolly { position: relative; max-width: 78rem; margin: 3rem auto 4rem; }
.scrolly-visual { position: sticky; top: 0; z-index: 2; padding: 0.75rem 0; background: linear-gradient(var(--bg) 85%, transparent); }
.scrolly-steps { position: relative; z-index: 1; }

.visual-frame {
  position: relative;
  padding: 1.25rem;
  border-radius: 1.1rem;
  background: var(--panel);
  box-shadow: 0 40px 80px -40px rgb(0 0 0 / 0.9), inset 0 0 0 1px var(--line);
}

.visual-caption { min-height: 1.5em; margin: 0 6rem 0.5rem 0; font-size: 0.85rem; color: var(--muted); }
.visual-caption strong { color: var(--ink); font-weight: 600; }
.visual-caption .is-bad { color: var(--fail); font-weight: 600; }

.replay {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.35rem 0.75rem;
  border: 0;
  border-radius: 9999px;
  background: rgb(255 255 255 / 0.06);
  color: var(--muted);
  font: 500 0.78rem var(--sans);
  cursor: pointer;
  transition: background 150ms, color 150ms, transform 150ms;
}
.replay:hover { background: rgb(255 255 255 / 0.12); color: var(--ink); }
.replay:active { transform: scale(0.95); }

.step {
  max-width: 32rem;
  margin: 0 auto 55vh;
  padding: 1.5rem 1.6rem;
  border-radius: 1rem;
  background: rgb(24 25 30 / 0.92);
  box-shadow: inset 0 0 0 1px var(--line);
  backdrop-filter: blur(8px);
  opacity: 0.55;
  transition: opacity 400ms, box-shadow 400ms;
}

.step:first-child { margin-top: 40vh; }
.step:last-child { margin-bottom: 0; }
.step.is-active { opacity: 1; box-shadow: inset 0 0 0 1px rgb(255 145 77 / 0.35), 0 30px 60px -30px rgb(0 0 0 / 0.8); }
.step h3 { margin: 0 0 0.75rem; font: 400 1.6rem/1.2 var(--serif); }
.step p { margin: 0 0 1rem; font-size: 1.02rem; line-height: 1.65; }
.step p:last-child { margin-bottom: 0; }
.step pre { margin: 0 0 1rem; padding: 0.9rem 1rem; border-radius: 0.6rem; background: var(--code-bg); box-shadow: inset 0 0 0 1px var(--line); }
.step pre:last-child { margin-bottom: 0; }

/* What the code above returns, joined on underneath it */
.step pre:has(+ .returns) { margin-bottom: 0; border-bottom-left-radius: 0; border-bottom-right-radius: 0; }
.returns { position: relative; margin: 0 0 1rem; }
.returns:last-child { margin-bottom: 0; }
.returns pre { border-top-left-radius: 0 !important; border-top-right-radius: 0 !important; background: rgb(255 255 255 / 0.03) !important; padding-top: 1.6rem !important; }
.returns::before {
  content: "returns";
  position: absolute;
  top: 0.45rem;
  left: 1rem;
  font: 600 0.62rem var(--sans);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
}
.returns pre code { color: #cfcfd4; }
.step pre code { font-size: 0.74rem; }

@media (min-width: 1024px) {
  .scrolly { display: grid; grid-template-columns: minmax(0, 30rem) minmax(0, 1fr); gap: 3.5rem; padding: 0 2rem; }
  .scrolly-visual { grid-column: 2; grid-row: 1; top: max(5rem, calc(50vh - 17rem)); align-self: start; padding: 0; background: none; }
  .scrolly-steps { grid-column: 1; grid-row: 1; }
  .step { margin-left: 0; margin-right: 0; }
}

/* With the visual pinned above the steps, each step settles just below it (see scrolly.js) */
@media (max-width: 1023px) {
  html { scroll-snap-type: y proximity; }
  .scrolly-visual .visual-frame { padding: 0.9rem; }
  .step {
    margin-bottom: 3rem;
    scroll-margin-top: calc(var(--visual-height, 50vh) + 0.75rem);
  }
  .step.is-snappable { scroll-snap-align: start; }
  .step:first-child { margin-top: 1rem; }
}

/* The dependency graph (see graph.js) */

.graph > svg { display: block; width: 100%; height: auto; max-height: 60vh; overflow: visible; }
@media (max-width: 1023px) { .graph > svg { max-height: 36vh; } }

.graph-node { opacity: 0; transform-box: fill-box; transform-origin: center; scale: 0.9; transition: opacity 500ms var(--ease), scale 500ms var(--ease); }
.graph-node.is-shown { opacity: 1; scale: 1; }
.graph-node rect { fill: var(--panel-raised); stroke: var(--line-strong); stroke-width: 1.5; transition: stroke 400ms, fill 400ms; }
.graph-node.is-contract rect { fill: rgb(255 145 77 / 0.1); stroke: rgb(255 145 77 / 0.7); }
.graph-node.is-hit rect { animation: hit 700ms ease-out; }
.graph-label { fill: var(--ink); font: 600 17px var(--sans); text-anchor: middle; }
.graph-sub { fill: var(--muted); font: 500 12px var(--mono); text-anchor: middle; }
.graph-node.is-contract .graph-label { fill: var(--gold); }

@keyframes hit { from { fill: rgb(255 145 77 / 0.45); stroke: var(--gold); } }

.graph-line { fill: none; stroke: rgb(255 255 255 / 0.4); stroke-width: 1.6; stroke-linecap: round; stroke-dasharray: var(--visible) var(--gap); stroke-dashoffset: var(--visible); transition: stroke-dashoffset 700ms var(--ease), stroke 400ms; }
.graph-arrow { fill: rgb(255 255 255 / 0.55); opacity: 0; transition: opacity 250ms, fill 400ms; }
.graph-edge.is-shown .graph-line { stroke-dashoffset: 0; transition-delay: var(--delay, 0ms), 0ms; }
.graph-edge.is-shown .graph-arrow { opacity: 1; transition-delay: calc(var(--delay, 0ms) + 550ms), 0ms; }
.graph-edge.is-cycle .graph-line { stroke: var(--fail); }
.graph-edge.is-cycle .graph-arrow { fill: var(--fail); }
.graph-edge.is-quiet .graph-line { stroke: rgb(255 255 255 / 0.2); }
.graph-edge.is-quiet .graph-arrow { fill: rgb(255 255 255 / 0.28); }
.graph-edge.is-signal .graph-line { stroke: rgb(255 145 77 / 0.75); }
.graph-edge.is-signal .graph-arrow { fill: var(--orange); }

/* Small, the labels get bigger, and lose the resource names under them */
@media (max-width: 640px) {
  .graph-label { font-size: 21px; translate: 0 7px; }
  .graph-sub { display: none; }
}

.graph-pulse { fill: var(--gold); filter: drop-shadow(0 0 6px rgb(255 189 89 / 0.9)); }

.graph-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 1.25rem; margin: 0.6rem 0 0; font-size: 0.78rem; color: var(--faint); }
.graph-legend span { display: inline-flex; align-items: center; gap: 0.45rem; white-space: nowrap; }
.graph-legend-line { stroke: rgb(255 255 255 / 0.4); stroke-width: 1.6; }
.graph-legend-head { fill: rgb(255 255 255 / 0.55); }
.graph-legend-pulse::before { content: ""; width: 0.55rem; height: 0.55rem; border-radius: 9999px; background: var(--gold); box-shadow: 0 0 6px rgb(255 189 89 / 0.9); }

/* Playground controls */

.playground-label { margin: 0 0 0.6rem; font: 600 0.72rem var(--sans); letter-spacing: 0.2em; text-transform: uppercase; color: var(--orange); }
.playground-code { padding: 0.9rem 1rem; border-radius: 0.6rem; background: var(--code-bg); box-shadow: inset 0 0 0 1px var(--line); }
.playground-code code { font-size: 0.78rem; }
.playground-code .line.is-highlighted { margin: 0 -1rem; padding: 0 1rem; }

.segmented { display: inline-flex; padding: 0.2rem; border-radius: 0.55rem; background: rgb(255 255 255 / 0.05); }
.segmented input, .chip input { position: absolute; opacity: 0; pointer-events: none; }
.segmented span { display: block; padding: 0.3rem 0.8rem; border-radius: 0.4rem; font: 600 0.8rem var(--sans); color: var(--muted); cursor: pointer; transition: background 150ms, color 150ms; }
.segmented input:checked + span { background: rgb(255 255 255 / 0.12); color: var(--ink); }
.segmented input:focus-visible + span { outline: 2px solid var(--orange); }

.chip { position: relative; display: inline-flex; align-items: center; padding: 0.3rem 0.7rem; border-radius: 9999px; background: rgb(255 255 255 / 0.05); font-size: 0.8rem; color: var(--muted); cursor: pointer; transition: background 150ms, color 150ms, transform 150ms; }
.chip:hover { background: rgb(255 255 255 / 0.1); }
.chip:active { transform: scale(0.96); }
.chip:has(input:checked) { background: rgb(255 255 255 / 0.14); color: var(--ink); box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.25); }
.chip.is-failing:has(input:checked) { background: rgb(248 113 113 / 0.14); color: #fecaca; box-shadow: inset 0 0 0 1px rgb(248 113 113 / 0.5); }
.chip:has(input:focus-visible) { outline: 2px solid var(--orange); }

.listener-rows { display: grid; gap: 0.5rem; }
.listener-row { display: grid; grid-template-columns: minmax(6.5rem, 1fr) auto auto; align-items: center; gap: 0.75rem; }
.listener-name { font-size: 0.88rem; font-weight: 600; }
.listener-row .segmented span { padding: 0.25rem 0.65rem; font-size: 0.76rem; }
.listener-row .chip { padding: 0.25rem 0.65rem; font-size: 0.76rem; }

@media (max-width: 420px) {
  .listener-row { grid-template-columns: auto auto; justify-content: start; row-gap: 0.35rem; }
  .listener-name { grid-column: 1 / -1; }
}

.playground-actions { display: flex; gap: 0.6rem; margin-top: 1.1rem; }
.button-primary { padding: 0.5rem 1rem; border: 0; border-radius: 0.55rem; background: var(--gradient); color: #18181b; font: 600 0.85rem var(--sans); cursor: pointer; transition: transform 150ms, filter 150ms; }
.button-primary:hover { filter: brightness(1.08); }
.button-primary:active { transform: scale(0.97); }

/* Delivery: the order and its listeners over time (see delivery.js) */

.delivery {
  padding: 1.5rem;
  border-radius: 1.1rem;
  background: var(--panel);
  box-shadow: 0 40px 80px -40px rgb(0 0 0 / 0.9), inset 0 0 0 1px var(--line);
}

.delivery-grid { display: grid; gap: 1.5rem; margin-bottom: 1.75rem; }
.delivery-grid > * { min-width: 0; }
@media (min-width: 860px) { .delivery-grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); } }

.timeline-lanes {
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr);
  grid-template-rows: 1.5rem repeat(6, 2.1rem) 1.5rem;
  column-gap: 1rem;
}

@media (max-width: 640px) {
  .timeline-lanes { grid-template-columns: 6rem minmax(0, 1fr); column-gap: 0.6rem; }
  .lane-does { display: none; }
  /* Too narrow for the labels in the blocks */
  .timeline-lanes .lane-block { padding: 0; font-size: 0; }
  .lane-returns-call { display: none; }
}

.lane-name { display: flex; flex-direction: column; justify-content: center; grid-column: 1; min-width: 0; font-size: 0.82rem; line-height: 1.2; }
.lane-name strong { font-weight: 600; white-space: nowrap; }
.lane-does { font-size: 0.72rem; color: var(--faint); white-space: nowrap; }
.lane-track { position: relative; grid-column: 2; border-bottom: 1px dashed var(--line); }

/* The transaction, the playhead and when the action returns, across every lane */
.lane-overlay { position: relative; grid-column: 2; grid-row: 1 / -1; pointer-events: none; }

.lane-band {
  position: absolute;
  top: 1.5rem;
  bottom: 1.5rem;
  left: 0;
  border-radius: 0.4rem;
  background: rgb(255 145 77 / 0.07);
  box-shadow: inset 0 0 0 1px rgb(255 145 77 / 0.3);
  transform-origin: left;
  transition: background 400ms, box-shadow 400ms;
}
.lane-band.is-rolled-back { background: rgb(248 113 113 / 0.09); box-shadow: inset 0 0 0 1px rgb(248 113 113 / 0.5); }

.lane-tag { position: absolute; top: 0; font: 600 0.66rem var(--mono); letter-spacing: 0.06em; color: var(--orange); white-space: nowrap; }
.lane-tag.is-end { transform: translateX(-100%); }
.lane-tag.is-bad { color: var(--fail); }

.lane-returns { position: absolute; top: 1.5rem; bottom: 0; width: 2px; margin-left: -1px; background: var(--ink); }
.lane-returns > span { position: absolute; bottom: 0; left: 0.4rem; font: 500 0.7rem var(--mono); color: var(--ink); white-space: nowrap; }
.lane-returns.is-end > span { right: 0.4rem; left: auto; }

.lane-playhead { position: absolute; top: 1.5rem; bottom: 1.5rem; left: 0; width: 1px; background: rgb(255 255 255 / 0.35); animation: playhead linear both; }

@keyframes playhead { from { left: 0; opacity: 1; } 95% { opacity: 1; } to { left: var(--to); opacity: 0; } }

.lane-block {
  position: absolute;
  top: 0.45rem;
  bottom: 0.45rem;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0 0.45rem;
  border-radius: 0.3rem;
  background: rgb(74 222 128 / 0.22);
  box-shadow: inset 0 0 0 1px rgb(74 222 128 / 0.55);
  font: 500 0.66rem var(--mono);
  color: #d1fae5;
  white-space: nowrap;
  transform-origin: left;
  transition: opacity 400ms, background 400ms, box-shadow 400ms;
}
.lane-block.is-order { background: rgb(255 189 89 / 0.2); box-shadow: inset 0 0 0 1px rgb(255 189 89 / 0.55); color: #fde8c4; }
.lane-block.is-enqueue { padding: 0; background: rgb(255 145 77 / 0.3); box-shadow: inset 0 0 0 1px var(--orange); }
.lane-block.is-fail { background: rgb(248 113 113 / 0.25); box-shadow: inset 0 0 0 1px rgb(248 113 113 / 0.65); color: #fecaca; }
.lane-block.is-undone {
  background: repeating-linear-gradient(135deg, rgb(255 255 255 / 0.08) 0 5px, transparent 5px 10px);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.2);
  color: var(--faint);
  text-decoration: line-through;
}

.lane-status { position: absolute; top: 50%; translate: 0.35rem -50%; font-size: 0.8rem; font-weight: 700; color: var(--ok); white-space: nowrap; }
.lane-status.is-fail { color: var(--fail); }
.lane-status.is-warning { color: var(--gold); font-size: 0.72rem; font-weight: 600; }
.lane-status.is-skipped { translate: 0.15rem -50%; color: var(--faint); font-size: 0.7rem; font-weight: 500; font-style: italic; }

.delivery-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 1.1rem; margin: 1rem 0 0; font-size: 0.75rem; color: var(--muted); }
.legend-item { display: inline-flex; align-items: center; gap: 0.45rem; white-space: nowrap; }
.legend-item::before { content: ""; width: 0.9rem; height: 0.6rem; border-radius: 0.15rem; }
.legend-item.is-band::before { background: rgb(255 145 77 / 0.15); box-shadow: inset 0 0 0 1px rgb(255 145 77 / 0.5); }
.legend-item.is-enqueue::before { background: rgb(255 145 77 / 0.3); box-shadow: inset 0 0 0 1px var(--orange); }
.legend-item.is-ok::before { background: rgb(74 222 128 / 0.3); box-shadow: inset 0 0 0 1px rgb(74 222 128 / 0.6); }
.legend-item.is-fail::before { background: rgb(248 113 113 / 0.3); box-shadow: inset 0 0 0 1px rgb(248 113 113 / 0.7); }
.legend-item.is-undone::before { background: repeating-linear-gradient(135deg, rgb(255 255 255 / 0.2) 0 2px, transparent 2px 4px); box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.3); }

.delivery-result { min-height: 3.2em; margin: 1rem 0 0; font-size: 0.95rem; line-height: 1.6; color: var(--muted); }
.delivery-result strong { color: var(--ink); font-weight: 600; }

/* Motion */

@keyframes rise { from { opacity: 0; transform: translateY(0.6rem); } }
/* `scale` rather than `transform`, so it composes with whatever positions the element */
@keyframes pop { from { opacity: 0; scale: 0.4; } to { opacity: 1; scale: 1; } }
@keyframes grow { from { transform: scaleX(0); } }

.pop { animation: pop 350ms cubic-bezier(0.2, 1.4, 0.4, 1) both; }
.grow { animation: grow 600ms var(--ease) both; }

.is-instant * { transition: none !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; }
}