/* Corewright homepage.
   Concept: the page is a silver package with one dark silicon inlay, the core map.
   Display type is Bahnschrift (ships with Windows, DIN-like, engineered), body is Segoe UI Variable.
   No external fonts or requests. */

:root {
  --page: #e8ebf1;
  --surface: #f5f6f9;
  --ink: #151925;
  --ink-2: #4a5163;
  --line: #c9cfda;
  --accent: #3f4dd0;
  --accent-ink: #ffffff;
  --owned: #0b7c5c;
  --code-bg: #1b2030;
  --code-ink: #dfe4f2;

  /* silicon, identical in both themes */
  --substrate: #173630;
  --substrate-2: #1d443c;
  --pad: #c9a54e;
  --die: #232835;
  --die-2: #2b3141;
  --die-line: #3a4256;
  --die-ink: #d7dcea;
  --die-ink-2: #8f98ae;
  --k-idle: #5b87b9;
  --k-game: #4cc2ff;
  --k-build: #f0a33a;
  --k-bg: #3cc3b0;
  --k-held: #a897ff;
  --star: #f2c94c;

  --display: "Bahnschrift", "DIN Alternate", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;
  --text: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", "Cascadia Code", Consolas, ui-monospace, monospace;

  --measure: 68ch;
  --wrap: 1200px;
  --gutter: clamp(20px, 4vw, 48px);

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #12151d;
    --surface: #191d28;
    --ink: #e7e9f0;
    --ink-2: #a5acbd;
    --line: #2d3343;
    --accent: #8c99ff;
    --accent-ink: #0f1220;
    --owned: #3ee0ab;
    --code-bg: #0d1017;
    --substrate: #11291f;
    --substrate-2: #163428;
  }
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--text);
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

code { font-family: var(--mono); font-size: 0.88em; }
:not(pre) > code {
  background: color-mix(in srgb, var(--ink) 7%, transparent);
  padding: 0.08em 0.35em;
  border-radius: 4px;
}

h1, h2, h3 {
  font-family: var(--display);
  font-stretch: semi-condensed;
  line-height: 1.1;
  margin: 0;
  letter-spacing: -0.01em;
}
h2 { font-size: clamp(1.75rem, 3.2vw, 2.4rem); font-weight: 600; max-width: 22ch; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1em; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 10;
  background: var(--accent); color: var(--accent-ink);
  padding: 8px 14px; border-radius: 6px; text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- header ---------- */

.top {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none;
  font: 600 1.2rem/1 var(--display);
}
.top nav { display: flex; gap: clamp(12px, 2.4vw, 28px); flex-wrap: wrap; }
.top nav a { color: var(--ink-2); text-decoration: none; font-size: 0.95rem; }
.top nav a:hover { color: var(--ink); text-decoration: underline; }
.top nav .nav-gh { color: var(--ink); font-weight: 600; }

/* ---------- hero ---------- */

.hero {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(24px, 5vw, 64px) var(--gutter) clamp(56px, 8vw, 104px);
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.7rem, 5.6vw, 4.75rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.02em;
  max-width: 11ch;
}
.lede { font-size: 1.15rem; color: var(--ink-2); margin: 24px 0 28px; max-width: 46ch; }

.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; }
.btn {
  display: inline-flex; align-items: center;
  min-height: 44px; padding: 0 20px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-weight: 600; font-size: 0.98rem;
  text-decoration: none;
}
.btn:hover { border-color: var(--ink-2); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { border-color: var(--ink); filter: brightness(1.08); }

.status-note { margin-top: 22px; font-size: 0.92rem; color: var(--ink-2); }
.pill {
  display: inline-block; margin-right: 6px;
  padding: 1px 9px; border-radius: 999px;
  border: 1px solid currentColor;
  color: var(--ink); font-weight: 600; font-size: 0.85rem;
}

/* ---------- the package (core map) ---------- */

.package { margin: 0; }

.substrate {
  position: relative;
  padding: clamp(14px, 2.2vw, 26px);
  border-radius: 14px;
  background:
    radial-gradient(circle at 1px 1px, rgb(255 255 255 / 0.06) 1px, transparent 1.5px) 0 0 / 9px 9px,
    linear-gradient(160deg, var(--substrate-2), var(--substrate));
  box-shadow:
    inset 0 0 0 1px rgb(255 255 255 / 0.06),
    0 1px 0 rgb(255 255 255 / 0.4),
    0 24px 48px -28px rgb(10 20 30 / 0.55);
}
/* gold contact pads along the top and bottom edge */
.substrate::before, .substrate::after {
  content: "";
  position: absolute; left: 18px; right: 18px; height: 4px;
  background: repeating-linear-gradient(90deg, var(--pad) 0 6px, transparent 6px 13px);
  opacity: 0.55;
}
.substrate::before { top: 5px; }
.substrate::after { bottom: 5px; }

.die-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(10px, 1.6vw, 18px);
}

.ccd {
  background: linear-gradient(150deg, var(--die-2), var(--die) 55%);
  border: 1px solid var(--die-line);
  border-radius: 8px;
  padding: 10px 10px 8px;
  color: var(--die-ink);
  transition: box-shadow 0.4s ease;
}
.ccd[data-claimed] { box-shadow: 0 0 0 1px rgb(255 255 255 / 0.12); }

.ccd-head {
  display: flex; align-items: baseline; gap: 8px;
  margin-bottom: 8px;
  font-size: 0.75rem; color: var(--die-ink-2);
}
.ccd-name { font: 700 0.95rem/1 var(--display); color: var(--die-ink); }
.ccd-load { margin-left: auto; font: 600 1rem/1 var(--display); color: var(--die-ink); font-variant-numeric: tabular-nums; }

.cores { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; }

.core {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto 1fr;
  gap: 3px;
  padding: 4px;
  border: 1px solid var(--die-line);
  border-radius: 5px;
  background: rgb(0 0 0 / 0.18);
  transition: border-color 0.4s ease;
}
.core-name { grid-column: 1 / -1; font-size: 0.66rem; line-height: 1.2; color: var(--die-ink-2); white-space: nowrap; }
.rank { position: absolute; top: 2px; right: 5px; font-size: 0.72rem; line-height: 1.2; color: var(--star); }
.rank-second { color: var(--die-ink); }

.core[data-free] {
  border-color: rgb(255 255 255 / 0.28);
  background:
    repeating-linear-gradient(135deg, rgb(255 255 255 / 0.09) 0 3px, transparent 3px 7px),
    rgb(0 0 0 / 0.18);
}

.t {
  --l: 0.1;
  --c: var(--k-idle);
  position: relative;
  height: clamp(30px, 3.6vw, 42px);
  border-radius: 3px;
  background: rgb(255 255 255 / 0.05);
  overflow: hidden;
}
.t::before {
  content: "";
  position: absolute; inset: auto 0 0 0;
  height: calc(var(--l) * 100%);
  background: var(--c);
  transition: height 0.7s cubic-bezier(.3, .7, .2, 1), background-color 0.5s ease;
}
.t i {
  position: absolute; left: 3px; top: 1px;
  font-style: normal; font-size: 0.56rem; line-height: 1.2;
  color: rgb(255 255 255 / 0.55);
  text-shadow: 0 0 2px rgb(0 0 0 / 0.7);
}
.t[data-k="game"] { --c: var(--k-game); }
.t[data-k="build"] { --c: var(--k-build); }
.t[data-k="bg"] { --c: var(--k-bg); }
.t[data-k="held"] { --c: var(--k-held); }

.ccd-tag {
  min-height: 1.4em;
  margin: 7px 0 0;
  font-size: 0.74rem; line-height: 1.4;
  color: var(--die-ink);
}

.iod {
  grid-column: 1 / -1;
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 12px;
  border-radius: 6px;
  background: linear-gradient(150deg, #2d3241, #252a37);
  border: 1px solid var(--die-line);
  color: var(--die-ink-2);
  font-size: 0.75rem;
}
.iod span:first-child { font: 600 0.85rem/1 var(--display); color: var(--die-ink); }

.package[data-reverted] .core { border-color: color-mix(in srgb, var(--owned) 70%, var(--die-line)); }

.scenes {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 16px;
}
.scenes button {
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: 500 0.88rem/1 var(--text);
  cursor: pointer;
}
.scenes button:hover { border-color: var(--ink-2); }
.scenes button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--page); }

.package figcaption {
  margin-top: 12px;
  min-height: 4.8em;
  max-width: 62ch;
  font-size: 0.95rem;
  color: var(--ink);
}
.legend-inline { display: block; margin-top: 4px; color: var(--ink-2); font-size: 0.85rem; }

.legend {
  list-style: none; margin: 4px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px 16px;
  font-size: 0.82rem; color: var(--ink-2);
}
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.sw { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.sw-game { background: var(--k-game); }
.sw-build { background: var(--k-build); }
.sw-bg { background: var(--k-bg); }
.sw-held { background: var(--k-held); }
.sw-free {
  border: 1px solid var(--ink-2);
  background: repeating-linear-gradient(135deg, var(--ink-2) 0 1.5px, transparent 1.5px 4px);
}

/* ---------- content bands ---------- */

.band {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(56px, 8vw, 96px) var(--gutter);
  border-top: 1px solid var(--line);
}
.band > h2 { margin-bottom: 28px; }
.intro { max-width: var(--measure); color: var(--ink-2); font-size: 1.08rem; margin-bottom: 36px; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}
.prose h2 { margin-bottom: 24px; }
.prose p { max-width: var(--measure); color: var(--ink-2); }

/* the Explain ledger */
.ledger {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px 22px 14px;
}
.ledger-title { font-size: 0.95rem; color: var(--ink-2); margin-bottom: 12px; }
.ledger-title strong { color: var(--ink); font-family: var(--mono); font-weight: 600; font-size: 0.95rem; }
.ledger table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.ledger th, .ledger td { text-align: left; padding: 10px 8px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.ledger thead th { font-weight: 600; color: var(--ink-2); font-size: 0.82rem; padding-top: 0; }
.ledger tbody th { font-weight: 600; }
.ledger td.set { color: var(--owned); font-weight: 700; }
.ledger td.none { color: var(--ink-2); }
.ledger td:last-child { color: var(--ink-2); }
.ledger q { quotes: "\201C" "\201D"; }
.ledger-foot { font-size: 0.86rem; color: var(--ink-2); margin: 12px 0 0; }

/* settings spec sheet */
.spec {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(28px, 5vw, 64px);
}
.spec > div {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.spec dt { font: 600 1.08rem/1.35 var(--display); }
.spec dd { margin: 0; color: var(--ink-2); font-size: 0.97rem; }
.aside { margin-top: 28px; max-width: var(--measure); font-size: 0.95rem; color: var(--ink-2); }

/* screenshots */
.shot { margin: 0; }
.shot img {
  border-radius: 8px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px -26px rgb(10 20 40 / 0.5);
}
.shot figcaption { margin-top: 12px; font-size: 0.9rem; color: var(--ink-2); max-width: 62ch; }
.shot-wide { margin-bottom: 44px; }

.modes {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(28px, 5vw, 64px);
}
.modes li { padding: 20px 0 6px; border-top: 1px solid var(--line); }
.modes h3 { margin-bottom: 8px; }
.modes p { color: var(--ink-2); font-size: 0.98rem; max-width: 58ch; }

.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 36px); }

/* import, API, footprint */
.trio {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 48px);
}
.trio h2 { font-size: clamp(1.4rem, 2.2vw, 1.7rem); margin-bottom: 16px; }
.trio p { color: var(--ink-2); font-size: 0.98rem; }

pre {
  margin: 0 0 1em;
  padding: 14px 16px;
  border-radius: 8px;
  background: var(--code-bg);
  color: var(--code-ink);
  font-size: 0.8rem;
  line-height: 1.55;
  overflow-x: auto;
}
pre code { font-size: inherit; white-space: pre; }

.meter { width: 100%; border-collapse: collapse; margin-bottom: 16px; font-size: 0.95rem; }
.meter caption { text-align: left; font-size: 0.85rem; color: var(--ink-2); padding-bottom: 6px; }
.meter th, .meter td { text-align: left; padding: 10px 10px 10px 0; border-top: 1px solid var(--line); color: var(--ink-2); }
.meter th { font-weight: 600; color: var(--ink); }
.meter b { font: 700 1.45rem/1 var(--display); color: var(--ink); font-variant-numeric: tabular-nums; }

.split-rev { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: center; }

/* download */
.dl-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: clamp(20px, 3vw, 36px); }
.dl {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
}
.dl h3 { margin-bottom: 12px; }
.dl p { color: var(--ink-2); font-size: 0.97rem; }
.dl .cta { margin-bottom: 12px; }

/* footer */
.foot {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 28px var(--gutter) 48px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px;
  font-size: 0.9rem; color: var(--ink-2);
}
.foot p { margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; }
.foot img { display: inline-block; vertical-align: middle; }

/* privacy page */
.doc { max-width: 760px; margin: 0 auto; padding: 32px var(--gutter) 80px; }
.doc h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: 24px; }
.doc h2 { font-size: 1.35rem; margin: 32px 0 12px; }
.doc p { color: var(--ink-2); max-width: var(--measure); }

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero { grid-template-columns: minmax(0, 1fr); }
  .hero h1 { max-width: 14ch; }
  .split, .split-rev { grid-template-columns: minmax(0, 1fr); }
  .spec { grid-template-columns: minmax(0, 1fr); }
  .trio { grid-template-columns: minmax(0, 1fr); }
  .dl-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .top nav a:not(.nav-gh):not([href="#download"]) { display: none; }
  .die-grid { grid-template-columns: minmax(0, 1fr); }
  .modes, .pair { grid-template-columns: minmax(0, 1fr); }
  .spec > div { grid-template-columns: 1fr; gap: 4px; }
  .ledger { padding: 16px 14px 10px; }
  .ledger table { font-size: 0.86rem; }
  .t { height: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

@media (forced-colors: active) {
  .t::before { background: CanvasText; }
  .scenes button[aria-pressed="true"] { outline: 2px solid Highlight; }
}

.dl-sub { margin-top: 18px; color: var(--ink-2); font-size: 0.95rem; }
.beta-page .band { padding-top: clamp(32px, 6vw, 72px); }
.beta-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 28px 0; }
.beta-facts div { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.beta-facts h3 { margin: 0 0 6px; font-size: 1rem; }
.beta-facts p { margin: 0; color: var(--ink-2); }