/* racer: project page.
   The palette below is COLOURS in crates/racer-godot/src/palette.rs, in
   index order. Nothing on this page uses a colour that is not in the game,
   apart from translucent mixes of these. */
:root {
  --ink:        #10121c;
  --asphalt-dk: #4a4c58;
  --asphalt-lt: #626470;
  --white:      #eeece2;
  --red:        #cc3236;
  --red-dk:     #7a1e2a;
  --grass-dk:   #326c3a;
  --grass-lt:   #569448;
  --sky-hi:     #4474c4;
  --sky-lo:     #96bee8;
  --hills:      #5c6c98;
  --gravel:     #b28e62;
  --ice:        #c6e6f2;
  --water:      #2a5298;
  --yellow:     #f6c632;
  --brown:      #603e28;

  --mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas,
          "DejaVu Sans Mono", "Liberation Mono", monospace;
  --maxw: 1180px;
  --rule: 1px solid color-mix(in srgb, var(--asphalt-lt) 55%, transparent);
  color-scheme: dark;
}

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

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--white);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(1200px 600px at 50% -10%, color-mix(in srgb, var(--water) 55%, transparent), transparent 70%),
    repeating-linear-gradient(0deg, rgba(0,0,0,.18) 0 1px, transparent 1px 3px);
}

.px { image-rendering: pixelated; image-rendering: crisp-edges; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 20;
  background: var(--yellow); color: var(--ink); padding: .5rem 1rem;
}
.skip:focus { left: 0; }

:focus-visible { outline: 2px solid var(--yellow); outline-offset: 3px; }

a { color: var(--yellow); text-underline-offset: 3px; }
a:hover { color: var(--ice); }

h1, h2, h3 { line-height: 1.15; letter-spacing: .04em; margin: 0 0 .6em; }
h2 {
  font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
  text-transform: uppercase;
}
/* A kerb: red and white blocks before every section heading. */
h2::before {
  content: ""; display: inline-block;
  width: 1.4em; height: .5em; margin-right: .55em; vertical-align: .18em;
  background: repeating-linear-gradient(90deg, var(--red) 0 .35em, var(--white) .35em .7em);
}
h3 { font-size: 1.05rem; text-transform: uppercase; color: var(--white); }

code { color: var(--yellow); font-family: var(--mono); font-size: .92em; }

section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4.5rem 1.25rem;
  border-top: var(--rule);
}
section:first-of-type { border-top: 0; }

.lede { color: var(--sky-lo); max-width: 64ch; margin-top: -.4rem; }
.small { font-size: .85rem; color: var(--sky-lo); }

/* ------------------------------------------------------------- top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: .55rem 1.25rem;
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: var(--rule);
}
.brand {
  display: inline-flex; align-items: center; gap: .6rem;
  color: var(--white); text-decoration: none;
  font-weight: 700; letter-spacing: .18em;
}
.brand-spr { width: 32px; height: 32px; }
.topbar nav { display: flex; gap: 1.1rem; flex-wrap: wrap; font-size: .85rem; }
.topbar nav a { color: var(--sky-lo); text-decoration: none; text-transform: uppercase; letter-spacing: .08em; }
.topbar nav a:hover, .topbar nav a[aria-current="true"] { color: var(--yellow); }
.topbar nav .ext { color: var(--white); }

/* ---------------------------------------------------------------- hero */
.hero {
  position: relative;
  max-width: none;
  padding: 0 0 4rem;
  border-top: 0;
  overflow: hidden;
}
.hero-art { position: relative; line-height: 0; background: var(--ink); }
.hero-art img {
  display: block;
  width: 100%; max-width: 1632px; margin: 0 auto;
  height: clamp(260px, 38vw, 560px); object-fit: cover;
  object-position: 50% 100%;
}
.hero-art::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--ink) 30%, transparent) 0%,
    transparent 35%,
    color-mix(in srgb, var(--ink) 92%, transparent) 92%,
    var(--ink) 100%);
}
.crt {
  position: absolute; inset: 0; pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(0,0,0,.2) 0 2px, transparent 2px 4px),
    radial-gradient(120% 90% at 50% 50%, transparent 55%, rgba(0,0,0,.45) 100%);
  animation: flicker 4.2s steps(2, end) infinite;
}
@keyframes flicker { 0%,96%,100% { opacity: 1; } 97% { opacity: .82; } }

.hero-copy {
  position: relative;
  max-width: var(--maxw);
  margin: -5.5rem auto 0;
  padding: 0 1.25rem;
}
.kicker {
  color: var(--yellow); letter-spacing: .22em; font-size: .8rem;
  text-transform: uppercase; margin: 0 0 .4rem;
}
.blink { animation: blink 1.1s steps(2, end) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero h1 {
  font-size: clamp(2.6rem, 1.6rem + 5vw, 5rem);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin: 0 0 .35em;
  color: var(--yellow);
  text-shadow:
    3px 3px 0 var(--red-dk),
    6px 6px 0 color-mix(in srgb, var(--ink) 80%, transparent);
}
.tagline { max-width: 60ch; font-size: clamp(1rem, .95rem + .3vw, 1.15rem); }

.badges {
  display: flex; flex-wrap: wrap; gap: .5rem;
  list-style: none; margin: 1.2rem 0; padding: 0;
  font-size: .78rem; text-transform: uppercase; letter-spacing: .08em;
}
.badges li {
  border: 1px solid var(--asphalt-lt);
  background: color-mix(in srgb, var(--asphalt-dk) 55%, transparent);
  color: var(--white);
  padding: .25rem .6rem;
}

.cta { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.4rem 0 1rem; }
.btn {
  display: inline-block;
  padding: .7rem 1.2rem;
  border: 2px solid var(--white);
  color: var(--white);
  background: transparent;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .85rem;
  box-shadow: 4px 4px 0 var(--red-dk);
  transition: transform .06s linear, box-shadow .06s linear, background .12s;
}
.btn:hover { background: color-mix(in srgb, var(--white) 12%, transparent); color: var(--white); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--red-dk); }
.btn.primary {
  background: var(--yellow); border-color: var(--yellow); color: var(--ink);
  font-weight: 700;
}
.btn.primary:hover { background: var(--white); border-color: var(--white); color: var(--ink); }
.btn.ghost { border-color: var(--asphalt-lt); color: var(--sky-lo); box-shadow: none; }
.btn.ghost:hover { color: var(--white); border-color: var(--white); }
.fineprint { font-size: .8rem; color: var(--sky-lo); max-width: 70ch; }

/* --------------------------------------------------------------- panels */
.panel {
  border: 1px solid var(--asphalt-lt);
  background: color-mix(in srgb, #000 30%, var(--ink));
  box-shadow: 6px 6px 0 rgba(0,0,0,.4);
}
.dosbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--white); color: var(--ink);
  padding: .15rem .6rem; font-size: .78rem; letter-spacing: .1em;
}
.dosbar .dots { letter-spacing: -.1em; }
pre.dos {
  margin: 0; padding: 1rem .9rem;
  color: var(--white); font-size: clamp(.66rem, .52rem + .42vw, .84rem);
  line-height: 1.55; overflow-x: auto;
}
.gate { margin-top: 2rem; max-width: 760px; }

/* ---------------------------------------------------------------- cards */
.cards { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  border: 1px solid var(--asphalt-lt);
  background: color-mix(in srgb, var(--asphalt-dk) 28%, transparent);
  padding: 1.2rem;
}
.card p { color: color-mix(in srgb, var(--white) 86%, var(--sky-lo)); }
.card .num { color: var(--red); margin-right: .4rem; }
.card code {
  display: block; margin-top: .8rem; padding: .45rem .6rem;
  background: rgba(0,0,0,.35); border-left: 2px solid var(--yellow);
  font-size: .8rem; overflow-wrap: anywhere;
}
.card p code { display: inline; margin: 0; padding: 0; background: none; border: 0; }

/* --------------------------------------------------------------- frames */
figure { margin: 0; }
figcaption { font-size: .85rem; color: var(--sky-lo); margin-top: .6rem; }

.frame-grid {
  display: grid; gap: 1.4rem; margin-top: 1.6rem;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: start;
}
.frame-grid img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--asphalt-lt);
  background: var(--ink);
}

.palette { margin-top: 2.5rem; }
.palette img { width: 100%; max-width: 768px; height: auto; border: 1px solid var(--asphalt-lt); }

/* ---------------------------------------------------------------- build */
.build-grid { display: grid; gap: 2rem; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: start; }
.codeblock { position: relative; border: 1px solid var(--asphalt-lt); background: rgba(0,0,0,.4); }
.codeblock pre { margin: 0; padding: 1rem; overflow-x: auto; font-size: .85rem; }
.codeblock code { color: var(--white); }
.copy {
  position: absolute; top: .5rem; right: .5rem;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; cursor: pointer;
  background: var(--asphalt-dk); color: var(--white);
  border: 1px solid var(--asphalt-lt); padding: .25rem .55rem;
}
.copy:hover { background: var(--yellow); color: var(--ink); }

.keys { width: 100%; border-collapse: collapse; font-size: .88rem; }
.keys th, .keys td { text-align: left; padding: .45rem .6rem; border-bottom: 1px dotted color-mix(in srgb, var(--asphalt-lt) 70%, transparent); vertical-align: top; }
.keys th { width: 12rem; font-weight: 400; color: var(--white); }
kbd {
  font-family: var(--mono); font-size: .78rem;
  border: 1px solid var(--asphalt-lt); border-bottom-width: 2px;
  padding: 0 .35rem; background: rgba(0,0,0,.35); color: var(--white);
}

.reqs { padding: 1.2rem; }
.reqs h3 { color: var(--yellow); font-size: .8rem; }
.reqs dl { display: grid; grid-template-columns: auto 1fr; gap: .2rem .9rem; margin: 0 0 1.4rem; font-size: .85rem; }
.reqs dt { color: var(--sky-lo); text-transform: uppercase; letter-spacing: .06em; }
.reqs dd { margin: 0; }
.tools { list-style: none; margin: 0; padding: 0; font-size: .82rem; color: var(--sky-lo); }
.tools li { padding: .25rem 0; }

/* -------------------------------------------------------------- status */
.checks { list-style: none; margin: 1.2rem 0 0; padding: 0; max-width: 80ch; }
.checks li { position: relative; padding: .35rem 0 .35rem 2.2rem; }
.checks li::before { position: absolute; left: 0; font-weight: 700; }
.checks .yes::before { content: "[×]"; color: var(--grass-lt); }
.checks .no::before { content: "[ ]"; color: var(--red); }

/* -------------------------------------------------------------- footer */
footer { border-top: var(--rule); background: rgba(0,0,0,.3); }
.foot-grid {
  max-width: var(--maxw); margin: 0 auto; padding: 2.5rem 1.25rem;
  display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-items: start;
}
.brand-foot { letter-spacing: .2em; font-weight: 700; margin: 0 0 .3rem; }
footer nav { display: grid; gap: .4rem; font-size: .88rem; }
.colophon { max-width: 46ch; }

/* Grid children default to min-width:auto, which lets a wide <pre> or a
   pixel image push the whole page sideways. */
.build-grid > *, .cards > *, .frame-grid > *, .foot-grid > * { min-width: 0; }

@media (max-width: 1000px) { .frame-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

@media (max-width: 760px) {
  .build-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-copy { margin-top: -3rem; }
  .keys th { width: 8.5rem; }
  .frame-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .crt, .blink { animation: none; }
}

/* Dev build cards: steps, then buttons along the bottom. */
.dl .card { display: flex; flex-direction: column; }
.dl .card ol { margin: 0 0 1rem; padding-left: 1.2rem; flex: 1; }
.dl .card li { margin: .3rem 0; }
.dl .card .btn { margin: .3rem .4rem 0 0; align-self: flex-start; }
.dl .arch { color: var(--sky-lo); font-size: .8rem; margin-left: .3rem; }
.dl .card.elsewhere h3::after { content: "open this page on your phone"; color: var(--yellow); font-size: .72rem; margin-left: .5rem; text-transform: none; }

/* Bundled notices stay readable on narrow screens and at larger text sizes. */
details { margin: 1rem 0; border: 1px solid var(--asphalt-lt); padding: 1rem; }
summary { cursor: pointer; color: var(--yellow); }
.license-text { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; font-size: .85rem; }

/* ------------------------------------------------- seasonal and strips */
.strip { margin: 2rem 0 1.5rem; }
.strip img { width: 100%; height: auto; border: 1px solid var(--asphalt-lt); }
.strip figcaption, .frame-grid figcaption { color: var(--ice); font-size: .8rem; margin-top: .4rem; }
.halloween {
  border: 1px solid color-mix(in srgb, var(--red) 60%, transparent);
  background:
    radial-gradient(700px 300px at 85% 0%, color-mix(in srgb, var(--red-dk) 45%, transparent), transparent 70%),
    color-mix(in srgb, var(--ink) 85%, var(--red-dk));
  padding: 1.5rem;
}
.spooky-kicker { color: var(--yellow); letter-spacing: .08em; font-size: .8rem; margin: 0; }
.halloween-grid {
  display: grid; grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 1.5rem; align-items: start;
}
.halloween-grid img { width: 100%; height: auto; border: 1px solid var(--asphalt-lt); }
.twin-list { margin: 0; padding-left: 1.1rem; }
.twin-list li { margin: .35rem 0; }
.twin-list b { color: var(--yellow); font-weight: normal; }
@media (max-width: 760px) {
  .halloween { padding: 1rem; }
  .halloween-grid { grid-template-columns: minmax(0, 1fr); }
  .halloween-grid figure { max-width: 240px; }
}

/* Cross-promotion for the studio's first game. */
.sibling { border-top: var(--rule, 1px solid #4446); }
.sibling p { max-width: 62ch; }