/* BITROT landing page — same two colours as the game, nothing else. */

:root {
  --ink: #0e0e10;
  --paper: #e9e9e1;
  --dim: #7b7b85;
  --dimmer: #4a4a52;
  --line: #2b2b31;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --pad: clamp(18px, 5vw, 64px);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, canvas { display: block; }
a { color: inherit; }

::selection { background: var(--paper); color: var(--ink); }

.wrap {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--pad);
}

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

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------------------------------------------------------------- nav -- */

#nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 18px;
  height: 54px;
  padding: 0 var(--pad);
  background: rgba(14, 14, 16, 0.72);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  transition: background 240ms var(--ease), border-color 240ms var(--ease);
}

#nav.lifted { background: rgba(14, 14, 16, 0.94); border-bottom-color: #3a3a42; }

/* drawn at its natural pixel size so the bitmap stays crisp */
#nav .mark { flex: none; display: flex; align-items: center; }

#nav nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.14em;
}

#nav nav a {
  color: var(--dim);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

#nav nav a:hover, #nav nav a:focus-visible { color: var(--paper); border-bottom-color: var(--paper); outline: none; }

@media (max-width: 760px) { #nav nav { display: none; } #nav .btn { margin-left: auto; } }

#scrollbar {
  position: absolute;
  left: 0; bottom: -1px;
  height: 2px;
  width: 0%;
  background: var(--paper);
  transition: width 80ms linear;
}

/* ------------------------------------------------------------ buttons -- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 2px solid var(--paper);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
  overflow: hidden;
  background: none;
  cursor: pointer;
  font-family: inherit;
  -webkit-tap-highlight-color: transparent;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--paper);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 280ms var(--ease);
}

.btn > span { position: relative; transition: color 200ms var(--ease); }

.btn:hover::before, .btn:focus-visible::before { transform: scaleX(1); }
.btn:hover > span, .btn:focus-visible > span { color: var(--ink); }
.btn:focus-visible { outline: 2px solid var(--paper); outline-offset: 3px; }
.btn:active { transform: translateY(1px); }

.btn.solid { background: var(--paper); color: var(--ink); }
.btn.solid::before { background: var(--ink); }
.btn.solid:hover > span, .btn.solid:focus-visible > span { color: var(--paper); }

.btn.ghost { border-color: var(--dim); color: #c9c9c3; background: rgba(14, 14, 16, 0.55); }
.btn.ghost:hover { border-color: var(--paper); }

.btn.small { padding: 9px 15px; font-size: 12px; border-width: 1px; }

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

#hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 96px var(--pad) 72px;
  overflow: hidden;
  isolation: isolate;
}

#hero-field {
  position: absolute;
  inset: -2% -2% -2% -2%;
  width: 104%;
  height: 104%;
  object-fit: cover;
  z-index: -2;
  opacity: 0;
  transition: opacity 1200ms var(--ease);
}

#hero-field.ready { opacity: 0.55; }

#hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 48% at 50% 46%, rgba(14, 14, 16, 0.92) 0%, rgba(14, 14, 16, 0.58) 48%, rgba(14, 14, 16, 0.12) 76%, rgba(14, 14, 16, 0.62) 100%),
    repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0.22) 0 1px, rgba(0, 0, 0, 0) 1px 3px);
}

.hero-inner {
  position: relative;
  width: 100%;
  max-width: 780px;
  text-align: center;
}

/* a guaranteed scrim, so the copy reads whatever the automaton does behind it */
.hero-inner::before {
  content: '';
  position: absolute;
  inset: -40px -28px;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(
    68% 58% at 50% 50%,
    rgba(14, 14, 16, 0.9) 0%,
    rgba(14, 14, 16, 0.78) 52%,
    rgba(14, 14, 16, 0.3) 82%,
    rgba(14, 14, 16, 0) 100%
  );
}

#wordmark { width: min(78vw, 560px); margin: 0 auto; }
#wordmark canvas { width: 100%; height: auto; }

.kicker {
  margin: 22px 0 0;
  font-size: clamp(12px, 2.4vw, 14px);
  letter-spacing: 0.4em;
  text-indent: 0.42em;
  color: var(--paper);
}

.lede {
  margin: 20px auto 0;
  max-width: 54ch;
  color: #c3c3bd;
  font-size: clamp(14px, 2.2vw, 17px);
}

.lede b { color: var(--paper); font-weight: 600; }

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 30px;
}

.sim {
  margin: 26px 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--dim);
}

#cue {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--dimmer);
  display: grid;
  justify-items: center;
  gap: 6px;
  animation: bob 2.6s var(--ease) infinite;
}

#cue i { display: block; width: 1px; height: 18px; background: linear-gradient(to bottom, var(--dimmer), transparent); }

@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.7; }
  50% { transform: translate(-50%, 7px); opacity: 1; }
}

/* ----------------------------------------------------------- sections -- */

section { position: relative; padding: clamp(64px, 11vh, 120px) 0; }

.eyebrow {
  font-size: 11.5px;
  letter-spacing: 0.26em;
  color: var(--dimmer);
  margin: 0 0 14px;
}

.head { width: min(90%, 460px); margin: 0 0 22px; }
.head canvas { width: 100%; height: auto; }

.rule {
  height: 1px;
  background: linear-gradient(to right, var(--line), transparent);
  margin: 0 0 clamp(34px, 6vh, 58px);
}

.copy { color: #c2c2bc; max-width: 62ch; }
.copy strong { color: var(--paper); font-weight: 600; }
.copy + .copy { margin-top: 14px; }

/* ---------------------------------------------------------- two cards -- */

.duo {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
}

.card {
  border: 1px solid var(--line);
  background: linear-gradient(to bottom, rgba(233, 233, 225, 0.035), rgba(233, 233, 225, 0.01));
  padding: clamp(20px, 3vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 320ms var(--ease), transform 320ms var(--ease);
}

.card:hover { border-color: #43434c; transform: translateY(-3px); }

.card h3 {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
}

.card p { margin: 0; color: #b4b4ae; font-size: 14.5px; }

.demo {
  border: 1px solid var(--line);
  background: var(--ink);
  overflow: hidden;
  line-height: 0;
}

.demo > canvas { width: 100%; height: auto; }

/* keeps both demos the same shape even though one is a 16x16 portrait */
.demo-stage {
  aspect-ratio: 480 / 276;
  display: grid;
  place-items: center;
  background: var(--paper);
  overflow: hidden;
}

.demo-stage canvas { height: 74%; width: auto; }

.demo-label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--dim);
  padding: 8px 10px;
  border-top: 1px solid var(--line);
  line-height: 1.4;
}

.demo-label b { color: var(--paper); font-weight: 600; font-variant-numeric: tabular-nums; }

/* -------------------------------------------------------------- steps -- */

.steps {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  counter-reset: step;
}

.step { display: flex; flex-direction: column; gap: 14px; }

.step figure {
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
  line-height: 0;
  transition: border-color 320ms var(--ease);
}

.step:hover figure { border-color: #43434c; }
.step img { width: 100%; height: auto; }

.step h3 {
  counter-increment: step;
  margin: 0;
  font-size: 13.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.step h3::before {
  content: counter(step, decimal-leading-zero) " / ";
  color: var(--dimmer);
}

.step p { margin: 0; font-size: 14.5px; color: #b4b4ae; }

/* ------------------------------------------------------------ friends -- */

.marquee {
  position: relative;
  overflow: hidden;
  border-block: 1px solid var(--line);
  padding: 20px 0;
  margin-bottom: clamp(26px, 4vw, 40px);
  --mask: linear-gradient(to right, transparent, #000 9%, #000 91%, transparent);
  -webkit-mask-image: var(--mask);
  mask-image: var(--mask);
}

.marquee-track {
  display: flex;
  gap: 22px;
  width: max-content;
  animation: slide 46s linear infinite;
}

.marquee:hover .marquee-track { animation-play-state: paused; }

@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.marquee canvas {
  width: 52px;
  height: 52px;
  opacity: 0.55;
  transition: opacity 260ms var(--ease), transform 260ms var(--ease);
}

.marquee canvas:hover { opacity: 1; transform: scale(1.14); }

.roller {
  display: grid;
  gap: clamp(20px, 4vw, 40px);
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  align-items: start;
}

@media (max-width: 680px) { .roller { grid-template-columns: 1fr; } }

.roll-portrait {
  border: 1px solid var(--line);
  padding: 14px;
  background: var(--paper);
  line-height: 0;
}

.roll-portrait canvas { width: 100%; height: auto; }

.traits { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }

.trait { background: var(--ink); padding: 11px 13px; }
.trait dt { margin: 0; font-size: 11px; letter-spacing: 0.14em; color: var(--dim); }
.trait dd { margin: 4px 0 0; font-size: 14px; letter-spacing: 0.06em; text-transform: uppercase; }

.roll-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.roll-name { font-size: clamp(20px, 4vw, 30px); letter-spacing: 0.08em; margin: 0; }
.roll-rarity { font-size: 12px; letter-spacing: 0.18em; padding: 3px 9px; border: 1px solid var(--paper); }
.roll-actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

/* ------------------------------------------------------------ economy -- */

.sinks { display: grid; gap: clamp(16px, 2.6vw, 26px); grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.sink { border: 1px solid var(--line); padding: clamp(18px, 2.6vw, 26px); }
.sink.burn { border-color: var(--paper); }

.sink h3 { margin: 0 0 4px; font-size: 14px; letter-spacing: 0.2em; text-transform: uppercase; }
.sink .tag { font-size: 11.5px; letter-spacing: 0.16em; color: var(--dim); }
.sink p { color: #b4b4ae; font-size: 14.5px; }

.ledger { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 13.5px; }
.ledger th, .ledger td { text-align: left; padding: 7px 0; border-bottom: 1px dashed var(--line); }
.ledger th { color: var(--dimmer); font-weight: 400; letter-spacing: 0.1em; font-size: 11.5px; text-transform: uppercase; }
.ledger td:last-child { text-align: right; font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------------- tech -- */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stat { background: var(--ink); padding: clamp(18px, 3vw, 28px); }
.stat b { display: block; font-size: clamp(26px, 5vw, 40px); letter-spacing: 0.02em; font-variant-numeric: tabular-nums; font-weight: 500; }
.stat span { display: block; margin-top: 7px; font-size: 11.5px; letter-spacing: 0.14em; color: var(--dim); }

.tech-list { list-style: none; margin: clamp(26px, 4vw, 40px) 0 0; padding: 0; display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.tech-list li { position: relative; padding-left: 20px; color: #b4b4ae; font-size: 14.5px; }
.tech-list li::before { content: ''; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; background: var(--paper); }

/* ------------------------------------------------------------- finale -- */

/* --------------------------------------------------------------- byline -- */

.byline {
  margin: 12px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.byline a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--dimmer);
  transition: border-color 180ms var(--ease);
}

.byline a:hover { border-bottom-color: var(--paper); }

.signoff {
  margin-top: clamp(46px, 8vh, 78px);
  padding-top: clamp(30px, 5vh, 46px);
  border-top: 1px solid var(--line);
}

.signoff-line {
  margin: 0 0 22px;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--dimmer);
}

.signoff-mark { width: min(70vw, 300px); margin: 0 auto; }
.signoff-mark canvas { width: 100%; height: auto; }

.signoff-sub {
  margin: 16px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--dim);
}

#finale { text-align: center; padding-block: clamp(80px, 14vh, 150px); border-top: 1px solid var(--line); }
#finale .head { margin-inline: auto; }
#finale .copy { margin-inline: auto; text-align: center; }
#finale .cta { margin-top: 30px; }

footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 40px;
  font-size: 12.5px;
  color: var(--dim);
}

.foot-row { display: flex; flex-wrap: wrap; gap: 14px 26px; align-items: center; justify-content: space-between; }
.foot-row a { color: var(--dim); text-decoration: none; border-bottom: 1px solid transparent; transition: color 180ms, border-color 180ms; }
.foot-row a:hover { color: var(--paper); border-bottom-color: var(--paper); }

.disclaimer { margin: 18px 0 0; max-width: 78ch; line-height: 1.7; }
.disclaimer b { color: var(--dim); }

/* ------------------------------------------------------------- reveal -- */

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 720ms var(--ease), transform 720ms var(--ease);
  transition-delay: var(--delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal].shown { opacity: 1; transform: none; }

/* stagger classes instead of inline styles, so the CSP can stay strict */
.d1 { --delay: 70ms; }
.d2 { --delay: 150ms; }
.d3 { --delay: 230ms; }

.sinks { margin-top: 34px; }
.sink-note { margin-top: 14px; font-size: 13px; color: var(--dim); }
.noscript-box { padding: 120px 0; text-align: center; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  #cue { animation: none; }
  .card:hover, .step:hover figure { transform: none; }
  #hero-field { transition: none; }
}