/* Opificia AI website. Tokens follow the Opificia AI brand book. */

@font-face {
  font-family: "Archivo";
  src: url("fonts/archivo-latin-wdth-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex-mono-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --navy: #10194A;
  --gold: #F2B705;
  --white: #FFFFFF;
  --on-navy: #FFFFFF;
  --on-navy-muted: #C9CFE6;

  --surface: #FFFFFF;
  --surface-alt: #EEF1F7;
  --line: #D3D8E6;
  --line-strong: #6B7396;
  --ink: #10194A;
  --ink-muted: #4A5275;
  --brand-block: #10194A;
  --focus: #10194A;

  --font-display: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  --radius-sm: 4px;
  --radius-md: 6px;

  /* The rack: teeth 12 wide with a 12 gap, as in the brand book. */
  --tooth: 12px;
  --pitch: 24px;
  --slot: 9;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: #0B1233;
    --surface-alt: #131D4D;
    --line: #2A3566;
    --line-strong: #7F8AB8;
    --ink: #F3F5F9;
    --ink-muted: #B9C1DE;
    --brand-block: #2B3A8F;
    --focus: #F2B705;
  }
}

@media (min-width: 720px) {
  :root { --slot: 19; }
}

@media (min-width: 1100px) {
  :root { --slot: 31; }
}

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

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

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

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.5;
  font-kerning: normal;
}

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

h1, h2, h3, p, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }

a { color: inherit; text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

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

code {
  font-family: var(--font-mono);
  font-size: 14px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 10;
  padding: var(--space-2) var(--space-4);
  background: var(--white);
  color: var(--navy);
  border-radius: var(--radius-md);
  font-weight: 600;
}
.skip:focus { top: var(--space-4); }

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 720px) {
  .wrap { padding: 0 var(--space-8); }
}

/* Tag: the bordered mono box from the logo's AI. */
.tag {
  display: inline-block;
  padding: 3px 7px;
  border: 2px solid currentColor;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  vertical-align: 0.15em;
}

/* The rack. Teeth are drawn with a repeating gradient that starts at the left
   edge, so a slot placed at a whole number of pitches lines up with them. */
.rack {
  position: relative;
  height: 18px;
  background: repeating-linear-gradient(
    90deg,
    rgb(255 255 255 / 0.16) 0 var(--tooth),
    transparent var(--tooth) var(--pitch)
  );
}

.rack-slot {
  position: absolute;
  top: 0;
  left: calc(var(--pitch) * var(--slot));
  width: var(--tooth);
  height: 100%;
  background: var(--brand-block);
}

.rack-gold .rack-slot {
  background: var(--gold);
  border-radius: 0 0 2px 2px;
}

/* Hero: a navy field with the open slot in the rack. */
.hero {
  background: var(--brand-block);
  color: var(--on-navy);
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4) var(--space-8);
  padding: var(--space-8) 0 0;
}

.brand img { width: 160px; height: auto; }

@media (min-width: 720px) {
  .brand img { width: 198px; }
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  font-size: 15px;
  font-weight: 500;
}

.nav a { text-decoration: none; color: var(--on-navy-muted); }
.nav a:hover { color: var(--on-navy); text-decoration: underline; }

.hero :focus-visible { outline-color: var(--white); }

.hero-body {
  max-width: 820px;
  padding: var(--space-16) 0 var(--space-16);
}

@media (min-width: 720px) {
  .hero-body { padding: var(--space-24) 0 var(--space-24); }
}

.status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  color: var(--on-navy-muted);
  font-size: 15px;
}

.status .tag { color: var(--on-navy); }

h1 {
  margin-top: var(--space-6);
  font-size: clamp(44px, 9vw, 88px);
  line-height: 0.98;
  font-weight: 700;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.lead {
  max-width: 62ch;
  margin-top: var(--space-6);
  font-size: 18px;
  line-height: 28px;
  color: var(--on-navy-muted);
}

@media (min-width: 720px) {
  .lead { font-size: 20px; line-height: 30px; }
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.button {
  display: inline-block;
  padding: 12px 20px;
  border: 2px solid var(--on-navy);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 16px;
  line-height: 20px;
  text-decoration: none;
}

.button-on-navy { background: var(--on-navy); color: var(--navy); }
.button-on-navy:hover { background: transparent; color: var(--on-navy); }
.button-ghost { color: var(--on-navy); }
.button-ghost:hover { background: rgb(255 255 255 / 0.1); }

/* Sections */
.band { padding: var(--space-16) 0; }

@media (min-width: 720px) {
  .band { padding: var(--space-24) 0; }
}

.band-mist { background: var(--surface-alt); }
.band-rule { border-top: 1px solid var(--line); }

.section-head { max-width: 720px; }

.section-head h2,
.contribute h2 {
  font-size: clamp(30px, 4.5vw, 44px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.section-head p {
  margin-top: var(--space-4);
  color: var(--ink-muted);
  font-size: 18px;
  line-height: 28px;
}

.more { margin-top: var(--space-8); font-weight: 600; }
.section-head .more { margin-top: var(--space-6); color: var(--ink); font-size: 16px; }

.step {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-muted);
}

h3 {
  margin-top: var(--space-2);
  font-size: 19px;
  line-height: 24px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

/* The loop: five steps on one line, joined by a strong rule. */
.loop {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.loop li {
  padding-top: var(--space-4);
  border-top: 2px solid var(--line-strong);
}

.loop p { margin-top: var(--space-2); color: var(--ink-muted); }

.loop .loop-human { border-top-color: var(--ink); border-top-width: 4px; padding-top: calc(var(--space-4) - 2px); }
.loop .loop-human p { color: var(--ink); }

@media (min-width: 900px) {
  .loop { grid-template-columns: repeat(5, 1fr); gap: 0; }
  .loop li { padding-right: var(--space-6); }
}

/* Sovereignty: three questions, then the commitments. */
.questions {
  margin-bottom: var(--space-12);
  font-size: clamp(36px, 7vw, 76px);
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: -0.035em;
}

.questions p:nth-child(2) { color: var(--ink-muted); }
.questions p:nth-child(3) { color: var(--line-strong); }

.section-head .lead-dark { color: var(--ink); }

.section-head .note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  font-size: 15px;
  line-height: 22px;
}

.tag-ink { color: var(--ink); }

.commitments {
  display: grid;
  gap: 0 var(--space-12);
  margin-top: var(--space-12);
  counter-reset: commitment;
}

@media (min-width: 900px) {
  .commitments { grid-template-columns: 1fr 1fr; }
}

.commitments li {
  position: relative;
  padding: var(--space-6) 0 var(--space-6) var(--space-12);
  border-top: 1px solid var(--line);
  counter-increment: commitment;
}

.commitments li::before {
  content: counter(commitment);
  position: absolute;
  left: 0;
  top: calc(var(--space-6) + 1px);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-muted);
}

.commitments h3 { margin-top: 0; }
.commitments p { margin-top: var(--space-2); color: var(--ink-muted); max-width: 52ch; }
.commitments .test { color: var(--ink); }

.test {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 20px;
}

.test span {
  margin-right: var(--space-2);
  padding: 1px 5px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* Licensing */
.split { display: grid; gap: var(--space-12); }

@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; align-items: start; }
}

.licences {
  width: 100%;
  border-collapse: collapse;
  font-size: 16px;
}

.licences th,
.licences td {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.licences tr:first-child th,
.licences tr:first-child td { border-top: 2px solid var(--ink); }

.licences th { font-weight: 600; padding-right: var(--space-6); }
.licences td { color: var(--ink-muted); }
.licences code { color: var(--ink); }

/* Roadmap */
.phases {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-12);
}

@media (min-width: 900px) {
  .phases { grid-template-columns: repeat(4, 1fr); gap: var(--space-8); }
}

.phases li { padding-top: var(--space-4); border-top: 2px solid var(--line); }
.phases .phase-now { border-top-color: var(--ink); }
.phases p { margin-top: var(--space-2); color: var(--ink-muted); }
.phases h3 .tag { margin-left: var(--space-1); font-size: 11px; vertical-align: 0.2em; }

/* Contribute: the slot from the hero, now filled with the gold tooth. */
.contribute {
  background: var(--brand-block);
  color: var(--on-navy);
  padding-bottom: var(--space-16);
}

.contribute .wrap { padding-top: var(--space-16); }

@media (min-width: 720px) {
  .contribute { padding-bottom: var(--space-24); }
  .contribute .wrap { padding-top: var(--space-24); }
}

.contribute h2 { max-width: 16ch; }
.contribute :focus-visible { outline-color: var(--white); }

.links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.links a {
  display: inline-block;
  padding: 12px 20px;
  border: 2px solid rgb(255 255 255 / 0.5);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
}

.links a:hover { border-color: var(--on-navy); }

.small {
  margin-top: var(--space-8);
  font-size: 14px;
  line-height: 20px;
  color: var(--on-navy-muted);
}

/* Footer */
.footer {
  padding: var(--space-12) 0;
  font-size: 14px;
  line-height: 20px;
  color: var(--ink-muted);
}

.footer-grid { display: grid; gap: var(--space-6); }
.footer-grid p + p { margin-top: var(--space-2); }

@media (min-width: 900px) {
  .footer-grid { grid-template-columns: 1fr auto; align-items: start; }
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
}

.footer-links a { color: var(--ink); }