/* ==========================================================================
   art/peace — tokens (paper and ink from the archived app, palette from
   the project's canvas config)
   ========================================================================== */
:root {
  --paper: #fefdfb;
  --tint: #f5f2ea;
  --ink: #1a1f2e;
  --ink-soft: #404144;
  --muted: #6b6f78;
  --line: #e5e1d6;
  --blue: #3a5ae0;
  --violet: #512da8;

  --c-white: #fafafa;
  --c-black: #080808;
  --c-darkred: #ba2112;
  --c-red: #ff403d;
  --c-orange: #ff7714;
  --c-yellow: #ffd115;
  --c-lemon: #f5ff05;
  --c-forest: #199f27;
  --c-green: #00ef3f;
  --c-navy: #152665;
  --c-blue: #1542ff;
  --c-cyan: #5cfffe;
  --c-violet: #a13dff;
  --c-pink: #ff7ad7;
  --c-pale: #c1d9e6;

  --font-pixel: "Public Pixel", "Courier New", monospace;
  --font-text: "DM Sans", "Helvetica Neue", Arial, sans-serif;

  --wrap: 1180px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 64px;
  --section-gap: clamp(64px, 9vw, 112px);
  --step: 4px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.65 var(--font-text);
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

h1, h2, h3 { margin: 0; font-weight: 400; }

p { margin: 0 0 1em; }

p:last-child { margin-bottom: 0; }

ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }

figure, fieldset { margin: 0; }

a:focus-visible,
button:focus-visible,
summary:focus-visible,
canvas:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--violet);
  font: 400 8px/2 var(--font-pixel);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* 15-color stripe used as a divider; the hairline keeps the white segment visible */
.palette-rule {
  height: 10px;
  box-shadow: inset 0 -1px 0 rgba(26, 31, 46, 0.18), inset 0 1px 0 rgba(26, 31, 46, 0.18);
  background: linear-gradient(90deg,
    var(--c-black) 0 6.66%, var(--c-darkred) 0 13.33%, var(--c-red) 0 20%,
    var(--c-orange) 0 26.66%, var(--c-yellow) 0 33.33%, var(--c-lemon) 0 40%,
    var(--c-forest) 0 46.66%, var(--c-green) 0 53.33%, var(--c-navy) 0 60%,
    var(--c-blue) 0 66.66%, var(--c-cyan) 0 73.33%, var(--c-violet) 0 80%,
    var(--c-pink) 0 86.66%, var(--c-pale) 0 93.33%, var(--c-white) 0 100%);
}

/* ==========================================================================
   Header + navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(254, 253, 251, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 2px solid var(--ink);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: var(--wrap);
  min-height: var(--header-h);
  margin: 0 auto;
  padding: 8px var(--gutter);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img {
  width: 70px;
  height: 48px;
}

.brand__name {
  font: 400 16px/1 var(--font-pixel);
  white-space: nowrap;
}

.primary-nav { margin-left: auto; }

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
}

.primary-nav a {
  display: inline-block;
  padding: 6px 0;
  font: 500 15px/1.3 var(--font-text);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}

.primary-nav a:hover,
.primary-nav a:focus-visible { border-bottom-color: var(--blue); }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 46px; height: 40px;
  padding: 8px 9px;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  height: 3px;
  margin: 4px 0;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-block;
  padding: 13px 20px;
  border: 2px solid var(--ink);
  box-shadow: var(--step) var(--step) 0 var(--ink);
  font: 400 16px/1.2 var(--font-pixel);
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn--primary {
  background: var(--blue);
  color: #fff;
}

.btn--ghost { background: var(--paper); }

/* ==========================================================================
   Hero + sandbox
   ========================================================================== */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 80px) var(--gutter);
}

.hero > * { min-width: 0; }

.hero__title {
  font: 400 24px/1.5 var(--font-pixel);
}

@media (min-width: 768px) {
  .hero__title { font-size: 32px; }
}

@media (min-width: 1200px) {
  .hero__title { font-size: 40px; }
}

.hero__lede {
  margin: 22px 0 28px;
  max-width: 48ch;
  color: var(--ink-soft);
  font-size: 19px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.sandbox__frame {
  padding: 14px;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
}

.sandbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.sandbox__title {
  font: 400 8px/1.6 var(--font-pixel);
}

.sandbox__meter {
  margin: 0;
  padding: 4px 8px;
  background: var(--ink);
  color: var(--paper);
  font: 400 8px/1.6 var(--font-pixel);
  white-space: nowrap;
}

.sandbox__timer:not(:empty) {
  margin-left: 8px;
  padding-left: 8px;
  border-left: 2px solid var(--paper);
}

.sandbox__canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 64 / 40;
  border: 2px solid var(--ink);
  background: var(--paper);
  touch-action: manipulation;
  cursor: crosshair;
}

.palette { border: 0; padding: 0; }

.palette__swatches {
  display: grid;
  grid-template-columns: repeat(15, minmax(0, 1fr));
  gap: 4px;
  margin-top: 12px;
}

.swatch { position: relative; }

.swatch input {
  position: absolute;
  inset: 0;
  opacity: 0;
  margin: 0;
  cursor: pointer;
}

.swatch span {
  display: block;
  aspect-ratio: 1;
  border: 2px solid var(--muted);
}

.swatch input:checked + span {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 2px var(--paper);
  transform: translateY(-3px);
}

.swatch input:focus-visible + span {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.sandbox__status {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.sandbox__status:empty { display: none; }

.sandbox__help {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.no-js .sandbox { display: none; }

/* ==========================================================================
   Sections
   ========================================================================== */
.section {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: var(--section-gap) var(--gutter);
}

.section--tint {
  max-width: none;
  background: var(--tint);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.section--tint > * {
  max-width: calc(var(--wrap) - 2 * var(--gutter));
  margin-left: auto;
  margin-right: auto;
}

.section__head { margin-bottom: clamp(28px, 4vw, 48px); }

.section__title {
  font: 400 24px/1.5 var(--font-pixel);
}

@media (min-width: 768px) {
  .section__title { font-size: 32px; }
}

.section__lede {
  max-width: 72ch;
  margin: 0 0 28px;
  color: var(--ink-soft);
}

/* ==========================================================================
   How it works
   ========================================================================== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.step {
  padding: 22px 20px;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--step) var(--step) 0 var(--ink);
}

.step__num {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 6px;
  background: var(--blue);
  color: #fff;
  font: 400 8px/1 var(--font-pixel);
}

.step__title {
  margin-bottom: 10px;
  font: 700 19px/1.3 var(--font-text);
}

.step p { color: var(--ink-soft); font-size: 16px; }

/* ==========================================================================
   Features
   ========================================================================== */
.features {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.feature {
  padding: 22px 20px;
  background: var(--paper);
  border: 2px solid var(--ink);
}

.feature__era {
  margin: 0 0 12px;
  color: var(--muted);
  font: 400 8px/1.6 var(--font-pixel);
  text-transform: uppercase;
}

.feature__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font: 700 18px/1.3 var(--font-text);
}

.feature p { color: var(--ink-soft); font-size: 16px; }

.chip {
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border: 2px solid var(--ink);
}

.chip--blue { background: var(--c-blue); }
.chip--yellow { background: var(--c-yellow); }
.chip--green { background: var(--c-green); }
.chip--red { background: var(--c-red); }
.chip--violet { background: var(--c-violet); }
.chip--orange { background: var(--c-orange); }
.chip--cyan { background: var(--c-cyan); }
.chip--forest { background: var(--c-forest); }

/* ==========================================================================
   Worlds & tech — two columns
   ========================================================================== */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.split > * { min-width: 0; }

.split__title {
  margin: 0 0 10px;
  font: 700 20px/1.3 var(--font-text);
}

.split__text p + .split__title { margin-top: 28px; }

.split__text p { color: var(--ink-soft); }

.specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
  background: var(--paper);
}

.spec {
  padding: 18px;
  border-bottom: 2px solid var(--line);
}

.spec:nth-child(odd) { border-right: 2px solid var(--line); }

.spec:nth-last-child(-n+2) { border-bottom: 0; }

.spec dt {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

.spec dd {
  font: 400 16px/1.5 var(--font-pixel);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 22px;
}

.links a {
  color: var(--blue);
  font-weight: 700;
  text-underline-offset: 4px;
}

.stack {
  display: grid;
  gap: 10px;
}

.stack li {
  padding: 14px 16px;
  background: var(--paper);
  border: 2px solid var(--ink);
  color: var(--ink-soft);
  font-size: 15px;
}

.stack strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
  font: 400 8px/1.8 var(--font-pixel);
}

/* ==========================================================================
   FAQ — native details, h3 inside summary
   ========================================================================== */
.faq {
  display: grid;
  gap: 12px;
  max-width: 860px;
}

.faq__item {
  background: var(--paper);
  border: 2px solid var(--ink);
}

.faq__item summary {
  position: relative;
  padding: 18px 56px 18px 20px;
  cursor: pointer;
  list-style: none;
}

.faq__item summary::-webkit-details-marker { display: none; }

.faq__item summary::after {
  content: "+";
  content: "+" / "";
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  font: 400 16px/1 var(--font-pixel);
}

.faq__item[open] summary::after {
  content: "-";
  content: "-" / "";
}

.faq__item summary h3 {
  display: inline;
  font: 700 18px/1.4 var(--font-text);
}

.faq__item p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--ink-soft);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--ink); color: #d7d9df; }

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px var(--gutter);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: 560px;
}

.footer-brand img {
  flex: 0 0 auto;
  width: 70px;
  height: 48px;
}

.footer-brand p { margin: 0; font-size: 15px; }

.footer-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.footer-links a {
  color: #fff;
  font-weight: 500;
  text-underline-offset: 4px;
}

.footer-links a:focus-visible { outline-color: var(--c-yellow); }

.copyright {
  margin: 0;
  padding: 16px var(--gutter) 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #9aa0ab;
  font-size: 14px;
  text-align: center;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1020px) {
  .hero { grid-template-columns: minmax(0, 1fr); }

  .steps,
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .js .nav-toggle { display: block; }

  .js .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    background: var(--paper);
    border-bottom: 2px solid var(--ink);
  }

  .js .primary-nav.is-open { display: block; }

  .js .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px var(--gutter) 14px;
  }

  .js .primary-nav a {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
  }

  .no-js .site-header { position: static; }

  .no-js .site-header__inner { flex-wrap: wrap; }

  .no-js .primary-nav { margin-left: 0; }

  .no-js .primary-nav ul { flex-wrap: wrap; gap: 4px 18px; }
}

@media (max-width: 767px) {
  .steps,
  .features { grid-template-columns: minmax(0, 1fr); }

  .palette__swatches { grid-template-columns: repeat(5, minmax(0, 1fr)); }

  .swatch span { aspect-ratio: 1.6; }

  .specs { grid-template-columns: minmax(0, 1fr); }

  .spec:nth-child(odd) { border-right: 0; }

  .spec:nth-last-child(2) { border-bottom: 2px solid var(--line); }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}