/* The Evolution of Color (2014 archive): a color lab / paint-swatch studio.
   Swiss grid, ink rules, one big swatch. Everything is scoped to .arc-eoc. */

html:has(.arc-eoc),
body:has(.arc-eoc) {
  margin: 0;
  padding: 0;
  background: #f4f1ea;
  color: #111;
  color-scheme: light;
}

.arc-eoc {
  --eoc-paper: #f4f1ea;
  --eoc-card: #fff;
  --eoc-ink: #111;
  --eoc-muted: #5b5852;
  --eoc-rule: 2px solid var(--eoc-ink);
  --eoc-sans: "Helvetica Neue", Helvetica, Arial, ui-sans-serif, system-ui, sans-serif;
  --eoc-mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;
  --eoc-gutter: 32px;

  /* The fittest color, driven by whichever chip carries .goal (see below). */
  --eoc-goal: #FF0000;
  --eoc-goal-name: "Red";
  --eoc-goal-hex: "#FF0000";
  --eoc-goal-bin: "11111111 00000000 00000000";

  display: block;
  min-height: 100svh;
  background: var(--eoc-paper);
  color: var(--eoc-ink);
  font-family: var(--eoc-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.arc-eoc:has(.eoc-chip[data-hex="FF0000"].goal) { --eoc-goal: #FF0000; --eoc-goal-name: "Red"; --eoc-goal-hex: "#FF0000"; --eoc-goal-bin: "11111111 00000000 00000000"; }
.arc-eoc:has(.eoc-chip[data-hex="00FFFF"].goal) { --eoc-goal: #00FFFF; --eoc-goal-name: "Cyan"; --eoc-goal-hex: "#00FFFF"; --eoc-goal-bin: "00000000 11111111 11111111"; }
.arc-eoc:has(.eoc-chip[data-hex="000000"].goal) { --eoc-goal: #000000; --eoc-goal-name: "Black"; --eoc-goal-hex: "#000000"; --eoc-goal-bin: "00000000 00000000 00000000"; }
.arc-eoc:has(.eoc-chip[data-hex="FFFFFF"].goal) { --eoc-goal: #FFFFFF; --eoc-goal-name: "White"; --eoc-goal-hex: "#FFFFFF"; --eoc-goal-bin: "11111111 11111111 11111111"; }
.arc-eoc:has(.eoc-chip[data-hex="0000FF"].goal) { --eoc-goal: #0000FF; --eoc-goal-name: "Blue"; --eoc-goal-hex: "#0000FF"; --eoc-goal-bin: "00000000 00000000 11111111"; }
.arc-eoc:has(.eoc-chip[data-hex="FFFF00"].goal) { --eoc-goal: #FFFF00; --eoc-goal-name: "Yellow"; --eoc-goal-hex: "#FFFF00"; --eoc-goal-bin: "11111111 11111111 00000000"; }
.arc-eoc:has(.eoc-chip[data-hex="00FF00"].goal) { --eoc-goal: #00FF00; --eoc-goal-name: "Green"; --eoc-goal-hex: "#00FF00"; --eoc-goal-bin: "00000000 11111111 00000000"; }
.arc-eoc:has(.eoc-chip[data-hex="FF00FF"].goal) { --eoc-goal: #FF00FF; --eoc-goal-name: "Magenta"; --eoc-goal-hex: "#FF00FF"; --eoc-goal-bin: "11111111 00000000 11111111"; }

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

.arc-eoc a {
  color: inherit;
}

.arc-eoc :focus-visible {
  outline: 3px solid var(--eoc-ink);
  outline-offset: 3px;
}

.arc-eoc .eoc-num {
  display: inline-grid;
  place-items: center;
  min-width: 26px;
  height: 20px;
  padding: 0 4px;
  margin-right: 8px;
  background: var(--eoc-ink);
  color: var(--eoc-paper);
  font-family: var(--eoc-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0;
  vertical-align: 2px;
}

.arc-eoc .eoc-kicker {
  margin: 0 0 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

/* Print-style color bar + top bar --------------------------------------------- */

.arc-eoc .eoc-colorbar {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  height: 10px;
}

.arc-eoc .eoc-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px var(--eoc-gutter);
  border-bottom: var(--eoc-rule);
}

.arc-eoc .eoc-home {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.01em;
  text-decoration: none;
}

.arc-eoc .eoc-home-mark {
  width: 20px;
  height: 20px;
  background:
    linear-gradient(#FF0000, #FF0000) 0 0 / 50% 50% no-repeat,
    linear-gradient(#FFFF00, #FFFF00) 100% 0 / 50% 50% no-repeat,
    linear-gradient(#0000FF, #0000FF) 0 100% / 50% 50% no-repeat,
    var(--eoc-ink);
}

.arc-eoc .eoc-home:hover {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.arc-eoc .eoc-topbar-meta {
  margin: 0;
  font-family: var(--eoc-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.arc-eoc .eoc-topbar-meta a {
  display: inline-block;
  padding: 12px 2px;
}

.arc-eoc .eoc-topbar-sep {
  margin: 0 6px;
}

/* Hero ---------------------------------------------------------------------- */

.arc-eoc .eoc-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 48px;
  align-items: end;
  max-width: 1344px;
  margin: 0 auto;
  padding: 56px var(--eoc-gutter) 48px;
}

.arc-eoc .eoc-title {
  margin: 0;
  font-size: clamp(48px, 7.4vw, 112px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.045em;
}

.arc-eoc .eoc-lede {
  max-width: 560px;
  margin: 28px 0 0;
  font-size: 19px;
  line-height: 1.5;
  color: #2b2925;
}

/* The one loud thing on the page: the fittest color as a giant paint chip. */
.arc-eoc .eoc-target {
  margin: 0;
  border: var(--eoc-rule);
  background: var(--eoc-card);
  box-shadow: 10px 10px 0 var(--eoc-ink);
}

.arc-eoc .eoc-target-color {
  aspect-ratio: 4 / 3;
  background: var(--eoc-goal);
  border-bottom: var(--eoc-rule);
  transition: background-color .35s ease;
}

.arc-eoc .eoc-target-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 2px 16px;
  padding: 14px 18px 16px;
}

.arc-eoc .eoc-target-label {
  grid-column: 1 / -1;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--eoc-muted);
}

.arc-eoc .eoc-target-name::after {
  content: var(--eoc-goal-name);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -.03em;
}

.arc-eoc .eoc-target-hex::after {
  content: var(--eoc-goal-hex);
  font-family: var(--eoc-mono);
  font-size: 15px;
  font-weight: 600;
}

.arc-eoc .eoc-target-bin {
  grid-column: 1 / -1;
}

.arc-eoc .eoc-target-bin::after {
  content: var(--eoc-goal-bin);
  font-family: var(--eoc-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--eoc-muted);
}

/* Lab: canvas field + controls ------------------------------------------------
   The controller sizes the canvas to this element's clientWidth, so it carries
   no padding; the page gutter comes from its width instead. */

.arc-eoc .eoc-lab {
  width: min(1280px, calc(100% - 2 * var(--eoc-gutter)));
  margin: 0 auto;
  border: var(--eoc-rule);
  background: var(--eoc-card);
}

.arc-eoc .eoc-field {
  position: relative;
  background: var(--eoc-paper);
}

.arc-eoc .eoc-field canvas {
  display: block;
  width: 100%;
}

/* Paper gutters drawn over the 20px cells turn the population into chips. */
.arc-eoc .eoc-field-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--eoc-paper) 0 2px, transparent 2px),
    linear-gradient(to bottom, var(--eoc-paper) 0 2px, transparent 2px);
  background-size: 20px 20px;
}

.arc-eoc .eoc-hover {
  display: none;
  position: absolute;
  z-index: 5;
  padding: 10px 14px;
  background: var(--eoc-card);
  border: var(--eoc-rule);
  box-shadow: 6px 6px 0 var(--eoc-ink);
  font-size: 12px;
  white-space: nowrap;
  pointer-events: none;
}

.arc-eoc .eoc-hover table {
  border-collapse: collapse;
}

.arc-eoc .eoc-hover th {
  padding: 2px 14px 2px 0;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-align: left;
  text-transform: uppercase;
}

.arc-eoc .eoc-hover td {
  padding: 2px 10px 2px 0;
  font-family: var(--eoc-mono);
}

.arc-eoc .eoc-hover-hex {
  font-weight: 700;
}

.arc-eoc .eoc-hover-fit {
  font-family: var(--eoc-sans) !important;
  font-weight: 600;
}

.arc-eoc .eoc-controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: var(--eoc-rule);
}

.arc-eoc .eoc-module {
  min-width: 0;
  padding: 20px 22px 18px;
  border-left: var(--eoc-rule);
}

.arc-eoc .eoc-module:first-child {
  border-left: 0;
}

.arc-eoc .eoc-module h2 {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.arc-eoc .eoc-help {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--eoc-muted);
}

.arc-eoc .eoc-run {
  display: flex;
  gap: 10px;
}

.arc-eoc .eoc-start {
  display: inline-flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  background: var(--eoc-ink);
  color: var(--eoc-card);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  user-select: none;
}

.arc-eoc .eoc-start:hover {
  background: #33312d;
}

.arc-eoc .eoc-fullscreen {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: var(--eoc-rule);
  background: var(--eoc-card);
  color: var(--eoc-ink);
  cursor: pointer;
}

.arc-eoc .eoc-fullscreen:hover {
  background: var(--eoc-paper);
}

.arc-eoc .eoc-speeds {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: var(--eoc-rule);
}

.arc-eoc .eoc-speed {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 4px;
  border-left: var(--eoc-rule);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  user-select: none;
}

.arc-eoc .eoc-speed:first-child {
  border-left: 0;
}

.arc-eoc .eoc-speed:hover {
  background: var(--eoc-paper);
}

.arc-eoc .eoc-speed.selected {
  background: var(--eoc-ink);
  color: var(--eoc-card);
}

.arc-eoc .eoc-speed:focus-visible {
  outline-offset: -6px;
  outline-color: currentColor;
}

.arc-eoc .eoc-chips {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.arc-eoc .eoc-chip {
  position: relative;
  height: 44px;
  padding: 0;
  border: var(--eoc-rule);
  background: var(--chip);
  cursor: pointer;
}

.arc-eoc .eoc-chip:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 0 var(--eoc-ink);
}

.arc-eoc .eoc-chip.goal {
  box-shadow: 0 0 0 2px var(--eoc-card), 0 0 0 5px var(--eoc-ink);
}

.arc-eoc .eoc-chip.goal::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border: 2px solid var(--eoc-ink);
  border-radius: 50%;
  background: var(--eoc-card);
}

.arc-eoc .eoc-status {
  margin: 0 0 8px;
  font-family: var(--eoc-mono);
  font-size: 12px;
  line-height: 1.4;
  min-height: 2.8em;
}

.arc-eoc .eoc-sparkline {
  display: block;
  width: 100%;
  height: 44px;
  background: #111;
}

/* Article ------------------------------------------------------------------- */

.arc-eoc .eoc-article {
  max-width: 1344px;
  margin: 0 auto;
  padding: 88px var(--eoc-gutter) 24px;
}

.arc-eoc .eoc-article-head {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 0 48px;
  padding-bottom: 40px;
}

.arc-eoc .eoc-article-head .eoc-kicker {
  grid-column: 1;
  margin-top: 12px;
}

.arc-eoc .eoc-article-head h2 {
  grid-column: 2;
  max-width: 860px;
  margin: 0;
  font-size: clamp(32px, 4.2vw, 56px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.035em;
}

.arc-eoc .eoc-article-lede {
  grid-column: 2;
  max-width: 720px;
  margin: 24px 0 0;
  font-size: 20px;
  line-height: 1.55;
}

.arc-eoc .eoc-sec {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 12px 48px;
  padding: 32px 0 20px;
  border-top: var(--eoc-rule);
}

.arc-eoc .eoc-sec h3 .eoc-num {
  flex-shrink: 0;
  margin-right: 12px;
  vertical-align: 0;
  position: relative;
  top: -2px;
}

.arc-eoc .eoc-sec h3 {
  display: flex;
  align-items: baseline;
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.015em;
}

.arc-eoc .eoc-sec-body {
  max-width: 720px;
  font-size: 18px;
  line-height: 1.65;
}

.arc-eoc .eoc-sec-body p {
  margin: 0 0 1em;
}

.arc-eoc .eoc-sec-body a,
.arc-eoc .eoc-origin a {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.arc-eoc .eoc-sec-body a:hover {
  background: var(--eoc-ink);
  color: var(--eoc-card);
  text-decoration: none;
}

.arc-eoc .eoc-sec-body code {
  padding: 1px 5px;
  border: 1px solid #cfc9bb;
  background: var(--eoc-card);
  font-family: var(--eoc-mono);
  font-size: .82em;
  white-space: nowrap;
}

.arc-eoc .eoc-steps {
  margin: 8px 0 1.2em;
  padding: 0;
  list-style: none;
  counter-reset: eoc-step;
}

.arc-eoc .eoc-steps li {
  position: relative;
  padding: 14px 0 14px 64px;
  border-top: 1px solid #cfc9bb;
  counter-increment: eoc-step;
}

.arc-eoc .eoc-steps li:last-child {
  border-bottom: 1px solid #cfc9bb;
}

.arc-eoc .eoc-steps li::before {
  content: counter(eoc-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.03em;
}

.arc-eoc .eoc-origin {
  margin: 0;
  padding: 24px 0 0;
  border-top: var(--eoc-rule);
  font-family: var(--eoc-mono);
  font-size: 13px;
}

.arc-eoc .eoc-origin a {
  display: inline-block;
  padding: 10px 0;
  text-underline-offset: 3px;
}

/* Footer -------------------------------------------------------------------- */

.arc-eoc .eoc-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  max-width: 1344px;
  margin: 40px auto 0;
  padding: 18px var(--eoc-gutter) 32px;
  border-top: var(--eoc-rule);
  font-family: var(--eoc-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.arc-eoc .eoc-footer .eoc-home {
  font-family: var(--eoc-sans);
  text-transform: none;
  letter-spacing: -.01em;
}

/* Responsive ---------------------------------------------------------------- */

@media (max-width: 1100px) {
  .arc-eoc .eoc-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .arc-eoc .eoc-module:nth-child(3) {
    border-left: 0;
  }

  .arc-eoc .eoc-module:nth-child(n + 3) {
    border-top: var(--eoc-rule);
  }

  .arc-eoc .eoc-article-head,
  .arc-eoc .eoc-sec {
    grid-template-columns: 220px minmax(0, 1fr);
    column-gap: 32px;
  }
}

@media (max-width: 820px) {
  .arc-eoc .eoc-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
    padding-top: 40px;
  }

  .arc-eoc .eoc-target {
    max-width: 420px;
  }

  .arc-eoc .eoc-article-head,
  .arc-eoc .eoc-sec {
    grid-template-columns: minmax(0, 1fr);
  }

  .arc-eoc .eoc-article-head .eoc-kicker,
  .arc-eoc .eoc-article-head h2,
  .arc-eoc .eoc-article-lede {
    grid-column: 1;
  }

  .arc-eoc .eoc-article {
    padding-top: 64px;
  }
}

@media (max-width: 640px) {
  .arc-eoc {
    --eoc-gutter: 16px;
  }

  .arc-eoc .eoc-topbar-kind,
  .arc-eoc .eoc-topbar-sep {
    display: none;
  }

  .arc-eoc .eoc-hero {
    padding-bottom: 36px;
  }

  .arc-eoc .eoc-lede {
    font-size: 17px;
    margin-top: 20px;
  }

  .arc-eoc .eoc-hero {
    gap: 28px;
    padding-top: 32px;
  }

  .arc-eoc .eoc-target {
    display: grid;
    grid-template-columns: 38% minmax(0, 1fr);
    box-shadow: 6px 6px 0 var(--eoc-ink);
    margin-right: 6px;
  }

  .arc-eoc .eoc-target-color {
    aspect-ratio: auto;
    min-height: 120px;
    border-bottom: 0;
    border-right: var(--eoc-rule);
  }

  .arc-eoc .eoc-target-card {
    grid-template-columns: minmax(0, 1fr);
    align-content: center;
    padding: 12px 14px;
  }

  .arc-eoc .eoc-target-bin::after {
    font-size: 10px;
    letter-spacing: 0;
  }

  .arc-eoc .eoc-target-name::after {
    font-size: 26px;
  }

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

  .arc-eoc .eoc-module {
    border-left: 0;
    padding: 18px 16px 16px;
  }

  .arc-eoc .eoc-module:nth-child(n + 2) {
    border-top: var(--eoc-rule);
  }

  .arc-eoc .eoc-article-lede {
    font-size: 18px;
  }

  .arc-eoc .eoc-sec-body {
    font-size: 17px;
  }

  .arc-eoc .eoc-steps li {
    padding-left: 48px;
  }

  .arc-eoc .eoc-steps li::before {
    font-size: 22px;
  }

  .arc-eoc .eoc-sec-body code {
    white-space: normal;
    word-break: break-word;
  }
}

@media (prefers-reduced-motion: reduce) {
  .arc-eoc .eoc-target-color {
    transition: none;
  }

  .arc-eoc .eoc-chip:hover {
    transform: none;
  }
}