/* FOURNEAU DRAG RACE: a drag strip at sunset, with something cooking.
 *
 * Dark only, on purpose: a deep purple evening, warm flames, no menace.
 * Series colors are fixed per competitor (never by rank) and were
 * validated together against --surface with the dataviz palette checks
 * (all pairs: lightness band, chroma, contrast >= 3:1 vs the surface,
 * normal-vision dE 19.5; colorblind dE 6.4 at worst, axum and roux;
 * basic-webserver's violet, added 2026-10-06, is 9.9 from every other),
 * so every bar is also labeled with its competitor's name, and every
 * chart has a table view).
 * Re-run the checks before changing or adding one.
 */
:root {
  color-scheme: dark;
  --surface: #170b26;
  --surface-2: #211235;
  --surface-3: #2d1947;
  --grid: #3b2459;
  --text: #fbf2ff;
  --text-2: #cfb8e6;
  --text-3: #9a82b8;
  --magenta: #ff5fb4;
  --flame: #ffa94d;
  --gold: #ffd76e;
  --link: #ffd76e;
  --series-go: #3987e5;
  --series-axum: #c98500;
  --series-fourneau-zig: #e64fae;
  --series-roux: #19a35f;
  --series-basic-webserver: #8010f8;
  --pixel: "Press Start 2P", ui-monospace, monospace;
  --mono: "Space Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { background: var(--surface); }
body {
  margin: 0;
  background:
    radial-gradient(ellipse at 50% 0%, #4b1f6e 0%, transparent 60%),
    var(--surface);
  color: var(--text);
  font: 16px/1.65 var(--mono);
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--magenta); }
code { font-family: var(--mono); background: var(--surface-3); padding: 0 .35em; border-radius: 3px; }

/* CRT: scanlines and a soft vignette over everything, ignoring the mouse. */
.crt {
  pointer-events: none;
  position: fixed; inset: 0; z-index: 50;
  background:
    repeating-linear-gradient(to bottom, transparent 0, transparent 2px, rgba(0,0,0,.16) 3px),
    radial-gradient(ellipse at center, transparent 62%, rgba(10,0,25,.45) 100%);
}

/* Masthead: the fire, a sunset logo, the copper bars. */
.masthead {
  position: relative;
  padding: 48px 16px 0;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--grid);
}
.home .masthead { padding-top: 84px; min-height: 360px; }
#fire {
  position: absolute; left: 0; right: 0; bottom: 6px; width: 100%; height: 40%; z-index: 0;
  image-rendering: pixelated; opacity: .6;
  mask-image: linear-gradient(to top, black 40%, transparent);
}
.logo, nav, .copper { position: relative; z-index: 1; }
.logo { display: inline-block; text-decoration: none; line-height: 1.1; margin-bottom: 22px; }
.logo span { display: block; font-family: var(--pixel); letter-spacing: .06em; }
.logo-top {
  font-size: clamp(22px, 6vw, 52px);
  background: linear-gradient(#fff7e0 0%, #ffd76e 38%, #ffa94d 55%, #ff5fb4 78%, #9b4dff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 14px rgba(255,95,180,.55));
}
.logo-bottom {
  font-size: clamp(16px, 4.6vw, 40px);
  color: #fff3d6;
  text-shadow: 0 0 6px rgba(255,169,77,.85), 0 0 22px rgba(255,95,180,.5);
  font-style: italic;
}
nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 6px; padding-bottom: 18px; }
nav a {
  font-family: var(--pixel); font-size: 10px; text-decoration: none; color: var(--text);
  padding: 8px 10px; border: 1px solid var(--grid); background: rgba(33,18,53,.82);
}
nav a:hover, nav a[aria-current="page"] {
  color: var(--surface); background: var(--gold); border-color: var(--gold);
}
.copper {
  height: 6px;
  background: linear-gradient(90deg, #9b4dff, #ff5fb4, #ffa94d, #ffd76e, #ffa94d, #ff5fb4, #9b4dff);
  background-size: 200% 100%;
  animation: copper 6s linear infinite;
}
@keyframes copper { to { background-position: 200% 0; } }
/* On the front page the bar closes the header under the fire, as it does on
   every other page, rather than following the menu across the fire's top
   (2026-10-07). */
.home .copper { position: absolute; left: 16px; right: 16px; bottom: 0; }

main { max-width: 1040px; margin: 0 auto; padding: 32px 16px 48px; }
/* Prose keeps a readable measure, left-aligned with the results below it
   (centred, it started 140 px right of them on a desktop). */
.prose { max-width: 760px; margin: 0; }
.prose ul { padding-left: 1.3em; }
.prose li + li { margin-top: 6px; }
.lede { max-width: 760px; margin: 0 0 24px; color: var(--text-2); }
.prose h1, .prose h2, .class { font-family: var(--pixel); line-height: 1.5; font-weight: normal; }
.prose h1 { font-size: 20px; color: var(--gold); margin-top: 40px; }
.prose h2 { font-size: 14px; color: var(--magenta); margin-top: 36px; }
.class { font-size: 13px; color: var(--magenta); margin: 28px 0 8px; }
.prose h3 { color: var(--flame); }
.prose table, .table table { border-collapse: collapse; width: 100%; font-size: 14px; }
.prose th, .prose td, .table th, .table td { border-bottom: 1px solid var(--grid); padding: 6px 8px; text-align: left; }
.prose th, .table th { color: var(--text-2); font-weight: 400; }
.prose dt { color: var(--flame); margin-top: 14px; }
.prose dd { margin: 4px 0 0; color: var(--text-2); }
.spec { color: var(--text-3); font-size: 13px; display: block; }

/* Results. */
.run-meta { color: var(--text-2); font-size: 13px; }
/* Breaks fall between items, never inside a commit or a date. */
.run-meta span { white-space: nowrap; }
.run-meta span:not(:last-child)::after { content: " \00b7"; color: var(--text-3); }
.machines { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; margin: 0; font-size: 12px; color: var(--text-3); }
.machines dt { color: var(--text-2); }
.machines dd { margin: 0; }
.raw { font-size: 12px; color: var(--text-3); margin: 6px 0 16px; }
.pending { font-family: var(--pixel); font-size: 12px; color: var(--gold); text-align: center; padding: 40px 0; line-height: 2; }
.legend { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 18px; padding: 0; margin: 16px 0; font-size: 14px; }
.legend li { display: flex; align-items: center; gap: 8px; }
.swatch { display: inline-block; width: 14px; height: 14px; border-radius: 3px; flex: none; }
.strips { display: grid; gap: 22px; }
.strip { min-width: 0; margin: 0; padding: 14px 16px 10px; background: rgba(33,18,53,.85); border: 1px solid var(--grid); }
.strip figcaption { font-size: 13px; color: var(--text-2); margin-bottom: 10px; }
.strip figcaption b { font-family: var(--pixel); font-size: 11px; color: var(--text); font-weight: normal; margin-right: 8px; }

/* The drag strip: a name, then a bar from one baseline, its value at the tip. */
/* The longest bar (the fastest round) takes this share of its track; the
   rest is room for the whisker's end and the number on a phone. */
.drag { --bar-max: 66%; }
.drag { display: grid; grid-template-columns: max-content 1fr; gap: 6px 10px; align-items: center; }
.drag .row { display: contents; }
.drag .name { text-align: right; color: var(--text-2); font-size: 14px; }
.drag .track { display: flex; align-items: center; gap: 8px; min-width: 0; border-left: 1px solid var(--text-3); padding: 2px 0; }
.drag .bar { height: 20px; width: calc(var(--share) * var(--bar-max)); min-width: 2px; border-radius: 0 2px 2px 0;
  transform-origin: left; animation: launch .9s cubic-bezier(.2,.9,.2,1); }
.drag .value { font-weight: 700; font-size: 14px; min-width: 0; }
/* The bar keeps its width: it is the number. A tag that does not fit wraps
   under the value instead of squeezing the bar off its whisker. */
.drag .bar { flex: none; }
.drag .dnf { color: var(--gold); }
@keyframes launch { from { transform: scaleX(0); } }

.chart-scroll { overflow-x: auto; }
.chart { width: 100%; min-width: 560px; height: auto; display: block; }
.chart text { font-family: var(--mono); fill: var(--text-2); font-size: 12px; }
.chart .grid { stroke: var(--grid); stroke-width: 1; }
.chart .tick { text-anchor: end; fill: var(--text-3); font-size: 11px; }
.chart .date { text-anchor: middle; fill: var(--text-3); font-size: 11px; }
.s-go { --series: var(--series-go); }
.s-axum { --series: var(--series-axum); }
.s-fourneau-zig { --series: var(--series-fourneau-zig); }
.s-roux { --series: var(--series-roux); }
.s-basic-webserver { --series: var(--series-basic-webserver); }
.swatch, .drag .bar { background: var(--series, #8a8a8a); }
.line { fill: none; stroke: var(--series, #8a8a8a); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.point { fill: var(--series, #8a8a8a); stroke: var(--surface); stroke-width: 2; }
.table { margin-top: 8px; font-size: 13px; max-width: 100%; overflow-x: auto; }
.table summary { cursor: pointer; color: var(--text-3); font-size: 12px; }
.table summary:hover { color: var(--gold); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.card { border: 1px solid var(--grid); background: var(--surface-2); padding: 14px 16px; }
.card h3 { margin: 0 0 6px; display: flex; align-items: center; gap: 10px; font-size: 16px; }
.card .lang { color: var(--text-3); margin: 0; font-size: 13px; }
.card a { margin-right: 10px; font-size: 13px; white-space: nowrap; }

footer { text-align: center; color: var(--text-3); font-size: 13px; border-top: 1px solid var(--grid); padding: 0 16px 28px; }

@media (prefers-reduced-motion: reduce) {
  .copper, .drag .bar { animation: none; }
}
@media (max-width: 560px) {
  body { font-size: 15px; }
  nav a { font-size: 9px; padding: 7px 8px; }
  /* The logo at the same height on every page (the owner, 2026-10-06):
     the front page keeps room below for its fire, not above. */
  .home .masthead { padding-top: 48px; min-height: 300px; }
  .drag .name, .drag .value { font-size: 12px; }
  .class { font-size: 11px; }
  main { padding-top: 24px; }
}

/* The server-class tabs over the results: one row of short names, joined
   like a segmented control; on a narrow screen the row scrolls rather than
   stacking (2026-10-06: three stacked tabs, each repeating the heading
   under it). */
nav.tabs { flex-wrap: nowrap; justify-content: flex-start; gap: 0; padding: 14px 0 0;
  overflow-x: auto; }
nav.tabs a { font-size: 10px; white-space: nowrap; padding: 9px 14px; }
nav.tabs a + a { border-left: 0; }
@media (max-width: 560px) {
  nav.tabs a { font-size: 9px; padding: 8px 10px; }
}

/* History on a phone: the whole chart in view, not scrolled; the legend
   above names the lines, the axis text grows to stay legible (SVG units
   shrink with the chart). */
@media (max-width: 560px) {
  .chart { min-width: 0; }
  .chart .end { display: none; }
  .chart .tick, .chart .date { font-size: 20px; }
}

/* The open-loop chart: a step where the loader was the limit is hollow. */
.point.hollow { fill: var(--surface); stroke: var(--series, #8a8a8a); stroke-width: 2; }
.open { margin-top: 22px; }
.axis-note { margin: 2px 0 0; font-size: 11px; color: var(--text-3); text-align: right; }
.legend a { color: inherit; text-decoration: none; border-bottom: 1px dotted var(--text-3); }
.legend a:hover { color: var(--gold); }

/* Each bar's whisker spans its slowest to its fastest round: the bar is
   the median, the whisker how much the rounds agreed. `reach` keeps the
   value clear of a whisker that runs past the bar. */
.drag .track { position: relative; }
.drag .reach { flex: none; width: calc(var(--reach) * var(--bar-max)); margin-left: -4px; }
.drag .whisker {
  position: absolute; top: calc(50% - 5px); height: 10px;
  left: calc(var(--low) * var(--bar-max)); width: calc((var(--high) - var(--low)) * var(--bar-max));
  border-left: 1px solid var(--text); border-right: 1px solid var(--text);
  background: linear-gradient(to bottom, transparent 4.5px, var(--text) 4.5px, var(--text) 5.5px, transparent 5.5px);
  opacity: .55; pointer-events: none;
}

/* The tables: one line a row, scrolled sideways when wide, never tall. */
.table th, .table td { white-space: nowrap; padding: 4px 8px; }
.table td[colspan] { white-space: normal; min-width: 18em; }

/* Something besides the server's CPU set a result (the loader, the
   network, too few connections): its bar is drawn as an outline in the
   competitor's own colour, as the open loop's hollow points are, and the
   table says what (2026-10-06: the owner found text tags beside the bars
   noise, and they squeezed the bars on a phone). */
.drag .bar.hollow { background: transparent; box-shadow: inset 0 0 0 2px var(--series); }
.swatch.hollow-bar, .swatch.hollow-dot { background: transparent; box-shadow: inset 0 0 0 2px var(--text-2); }
.swatch.hollow-dot { border-radius: 50%; }
.open .legend { margin: 8px 0 0; font-size: 13px; }

/* The size tabs stay in reach while the results scroll under them: a band
   the width of the page, the page's own colour, blurred behind, so the
   bars pass beneath it cleanly; demo.js keeps the same workload in view
   across a switch. */
nav.tabs { position: sticky; top: 0; z-index: 5; margin: 0 -16px 0; padding: 10px 16px;
  background: rgba(23, 11, 38, .9); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--grid); }
.racer { margin: 0 0 8px; color: var(--text-2); }