/* AOHK — Academy of Human Knowledge
   A first public disclosure
   Type: Cormorant Garamond (display) + Newsreader (body) + JetBrains Mono (technical)
*/

:root {
  /* Slate — default (LIGHT: warm white paper, deep ink, slate accent) */
  --paper: #f6f5f1;
  --paper-deep: #ebe9e2;
  --ink: #14171c;
  --ink-soft: #3a3e47;
  --muted: #7d7f84;
  --rule: #14171c;
  --accent: #3a3e47;
  --accent-soft: #525866;
  --gold: #3a3e47;
  --gold-soft: #525866;
  --highlight: rgba(58, 62, 71, 0.08);

  /* type */
  --display: 'Cormorant Garamond', 'Cormorant', 'EB Garamond', Georgia, serif;
  --serif: 'Newsreader', 'Iowan Old Style', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* measure */
  --measure: 36rem;
  --measure-wide: 52rem;
  --gutter: 1.5rem;
}

/* Nebula — deep space blue + cool white */
[data-palette="nebula"] {
  --paper: #0a1330;
  --paper-deep: #10193c;
  --ink: #f3f6fb;
  --ink-soft: #c6cee0;
  --muted: #6e7894;
  --rule: #f3f6fb;
  --accent: #a8baea;          /* pale cosmic blue */
  --accent-soft: #c8d4f0;
  --gold: #a8baea;
  --gold-soft: #c8d4f0;
  --highlight: rgba(168, 186, 234, 0.10);
}

/* Obsidian — maximal contrast: near-black + pure white */
[data-palette="obsidian"] {
  --paper: #0b0c10;
  --paper-deep: #14171c;
  --ink: #ffffff;
  --ink-soft: #d4d6db;
  --muted: #6a6e76;
  --rule: #ffffff;
  --accent: #ffffff;
  --accent-soft: #d4d6db;
  --gold: #ffffff;
  --gold-soft: #d4d6db;
  --highlight: rgba(255, 255, 255, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-weight: 400;
  font-size: 18px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  padding: 0 var(--gutter);
  background-image:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0,0,0,0.025), transparent 70%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(0,0,0,0.02), transparent 70%);
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.14 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
  opacity: 0.45;
}

[data-palette="nebula"] body {
  background-image:
    radial-gradient(ellipse 75% 50% at 50% -10%, rgba(168, 186, 234, 0.18), transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(72, 90, 180, 0.15), transparent 70%),
    radial-gradient(ellipse 50% 35% at 15% 70%, rgba(140, 110, 200, 0.10), transparent 70%);
}
[data-palette="nebula"] body::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.22 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  mix-blend-mode: screen;
  opacity: 0.35;
}

[data-palette="obsidian"] body {
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,255,255,0.04), transparent 70%);
}
[data-palette="obsidian"] body::before {
  opacity: 0.15;
}

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

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--accent-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 200ms ease, text-decoration-color 200ms ease;
}
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

hr.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
  opacity: 0.5;
}
hr.rule-thin { opacity: 0.25; }
hr.rule-double {
  border: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  height: 4px;
  opacity: 0.4;
}

/* ============== MASTHEAD ============== */

.masthead {
  max-width: var(--measure-wide);
  margin: 0 auto;
  padding-top: 1.4rem;
}
.masthead-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.6rem;
}
.mark {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.22em;
}

/* logo glyph — uses PNG background-image; filter inverts for dark palettes */
.logo-glyph {
  display: inline-block;
  background-image: url("assets/aohk-logo-blk.png");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  vertical-align: middle;
}
[data-palette="bone"] .logo-glyph {
  background-image: url("assets/aohk-logo-blk.png");
}
[data-palette="nebula"] .logo-glyph {
  background-image: url("assets/aohk-logo-wht.png");
}
[data-palette="obsidian"] .logo-glyph {
  background-image: url("assets/aohk-logo-wht.png");
}

/* masthead mark — uses the AOHK wordmark logo (full A·O·H·K) */
.mark.logo-glyph {
  width: 110px;
  height: 34px;
  letter-spacing: 0;
  background-image: url("assets/aohk-wordmark-blk.png");
}
[data-palette="nebula"] .mark.logo-glyph,
[data-palette="obsidian"] .mark.logo-glyph {
  background-image: url("assets/aohk-wordmark-blk.png");
  filter: invert(1);
}

/* hero wordmark replacement */
.wordmark-logo {
  display: block;
  margin: 0 auto;
  width: clamp(220px, 36vw, 420px);
  height: auto;
  aspect-ratio: 2400 / 1500;
}
.folio {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  text-align: right;
  white-space: nowrap;
}
@media (max-width: 640px) {
  .folio { font-size: 0.58rem; letter-spacing: 0.1em; }
}

/* ============== NAV ============== */

.nav-wrap {
  max-width: var(--measure-wide);
  margin: 0 auto;
}
.nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.9rem 0;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.3rem 1.1rem 0.3rem 0;
  margin-right: 1.1rem;
  border-right: 1px solid var(--rule);
  border-right-color: color-mix(in srgb, var(--rule) 22%, transparent);
  transition: color 200ms ease;
  white-space: nowrap;
}
.nav a:last-of-type { border-right: 0; margin-right: 0; padding-right: 0; }
.nav a:hover { color: var(--ink); }
.nav a.active { color: var(--accent); }
.nav a.spacer { flex: 1; border: 0; padding: 0; margin: 0; }
.nav a.cta {
  color: var(--ink);
  margin-left: auto;
  padding-left: 0;
}
.nav a.cta:hover { color: var(--accent); }
.nav a.cta .arrow { display: inline-block; margin-left: 0.4rem; transition: transform 200ms ease; }
.nav a.cta:hover .arrow { transform: translateX(3px); }

@media (max-width: 640px) {
  .nav { font-size: 0.62rem; gap: 0.2rem; }
  .nav a { padding: 0.3rem 0.7rem 0.3rem 0; margin-right: 0.7rem; }
  .nav a.cta { margin-left: 0; }
}

/* ============== MAIN ============== */

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding-bottom: 6rem;
}

section { padding: 2.5rem 0; }
section + section { border-top: 1px solid var(--rule); border-top-color: color-mix(in srgb, var(--rule) 22%, transparent); }

/* page-mode: when a single section owns the page, no top border, more room */
main.solo section { padding: 3rem 0 2rem 0; border-top: 0; }
main.solo section + section { border-top: 0; padding-top: 2rem; }

/* page header (used on non-home pages) */
.page-head {
  padding: 4rem 0 3rem 0;
  position: relative;
}
.page-head > *:not(.star-field) { position: relative; z-index: 1; }
.page-head .section-label { margin-bottom: 1.2rem; }
.page-head h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.6rem, 6.5vw, 4.6rem);
  line-height: 1;
  letter-spacing: -0.012em;
  margin: 0 0 1.4rem 0;
  text-wrap: balance;
}
.page-head h1 em {
  font-style: italic;
  color: var(--accent);
}
.page-head .epigraph {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.32rem;
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 30rem;
  margin: 0;
  text-wrap: pretty;
}

/* next-page link at bottom of a page */
.next-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 3rem 0 0 0;
  margin-top: 2.5rem;
  border-top: 1px solid var(--rule);
  border-top-color: color-mix(in srgb, var(--rule) 25%, transparent);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.next-link .lede { color: var(--muted); }
.next-link a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  transition: color 200ms ease;
}
.next-link a:hover { color: var(--accent); }
.next-link a .arrow { display: inline-block; margin-left: 0.5rem; transition: transform 200ms ease; }
.next-link a:hover .arrow { transform: translateX(4px); }

.section-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.6rem 0;
}

h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2rem, 4.6vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.005em;
  margin: 0 0 1.5rem 0;
  text-wrap: balance;
}
h2 em { font-style: italic; color: var(--accent); }

h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.4rem;
  letter-spacing: 0.005em;
  margin: 2.4rem 0 0.6rem 0;
  color: var(--ink);
}

p { margin: 0 0 1.1rem 0; text-wrap: pretty; }
p.lead {
  font-size: 1.22rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

/* drop cap — first letter of a paragraph with .drop-cap */
.drop-cap::first-letter {
  font-family: var(--display);
  font-weight: 500;
  font-style: normal;
  float: left;
  font-size: 4.2em;
  line-height: 0.86;
  padding: 0.06em 0.12em 0 0;
  color: var(--accent);
  margin-top: 0.04em;
}
[data-palette="obsidian"] .drop-cap::first-letter { color: var(--ink); }

/* ============== ORNAMENTS ============== */

.asterism {
  font-family: var(--display);
  text-align: center;
  color: var(--accent);
  font-size: 1.4rem;
  letter-spacing: 0.6em;
  line-height: 1;
  margin: 1.5rem 0;
  user-select: none;
}
.asterism.gold { color: var(--gold); }

.ornament-rule {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin: 2.6rem 0;
  color: var(--accent);
}
.ornament-rule::before,
.ornament-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, color-mix(in srgb, var(--rule) 50%, transparent), transparent);
}
.ornament-rule .glyph {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.4rem;
  letter-spacing: 0.3em;
  padding-left: 0.3em;
  line-height: 1;
  user-select: none;
}
.ornament-rule.gold .glyph,
.ornament-rule.gold { color: var(--gold); }

/* breath — italic display-set call-out used as a breather between sections */
.breath {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  line-height: 1.3;
  text-align: center;
  color: var(--ink);
  max-width: 30rem;
  margin: 3rem auto;
  text-wrap: balance;
}
.breath em { color: var(--accent); font-style: italic; }

em { font-style: italic; }
strong { font-weight: 600; }

.smallcaps {
  font-variant-caps: all-small-caps;
  letter-spacing: 0.1em;
}

.mono { font-family: var(--mono); }

/* ============== HERO ============== */

.hero {
  padding: 3rem 0 3rem 0;
  text-align: left;
  position: relative;
}

/* star/constellation field behind the hero */
.star-field {
  position: absolute;
  inset: -2rem -8rem -2rem -8rem;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
@media (max-width: 820px) {
  .star-field { inset: -2rem -2rem -2rem -2rem; }
}
.star-field svg { width: 100%; height: 100%; display: block; }
.hero > *:not(.star-field) { position: relative; z-index: 1; }

.kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.8rem 0;
}
.kicker .dot { display: inline-block; width: 5px; height: 5px; background: var(--accent); border-radius: 50%; vertical-align: middle; margin-right: 0.6rem; margin-bottom: 2px; }

.hero-ornament {
  display: flex;
  justify-content: center;
  margin: 0 auto 2rem;
  width: 120px;
  height: 120px;
}
.hero-ornament-large {
  width: clamp(220px, 36vw, 420px);
  height: auto;
  aspect-ratio: 1;
  margin: 0 auto 2.4rem;
}
@media (max-width: 540px) {
  .hero-ornament { width: 96px; height: 96px; }
}
.hero-ornament svg { width: 100%; height: 100%; overflow: visible; }

.wordmark {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(5rem, 17vw, 10rem);
  line-height: 0.9;
  letter-spacing: 0.005em;
  margin: 0;
  text-align: center;
  color: var(--ink);
  position: relative;
}
.wordmark .ampersand {
  font-style: italic;
  color: var(--accent);
}

.expansion {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  color: var(--ink-soft);
  margin: 0.9rem 0 3rem 0;
  letter-spacing: 0.04em;
  text-align: center;
}

.tagline {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.4rem, 2.8vw, 1.7rem);
  line-height: 1.45;
  color: var(--ink);
  max-width: 32rem;
  margin: 0 auto;
  text-wrap: pretty;
  text-align: center;
}
.tagline em { color: var(--accent); font-style: italic; font-weight: 400; }

/* ============== INSTRUMENT ============== */

.tech-block {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--ink-soft);
  background: var(--paper-deep);
  border-left: 2px solid var(--accent);
  padding: 1.1rem 1.3rem;
  margin: 2rem 0;
}
.tech-block .tech-row {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
}
.tech-block .tech-row .label {
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.66rem;
  padding-top: 0.18rem;
}
.tech-block .tech-row .val { color: var(--ink); }
.tech-block .tech-row .val strong { color: var(--accent); font-weight: 500; }

.numbers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2.5rem 0 1rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  border-top-color: color-mix(in srgb, var(--rule) 35%, transparent);
  border-bottom-color: color-mix(in srgb, var(--rule) 35%, transparent);
  padding: 1.6rem 0;
}
.numbers .stat .n {
  font-family: var(--display);
  font-weight: 400;
  font-size: 2.6rem;
  line-height: 1;
  letter-spacing: -0.01em;
  display: block;
  color: var(--accent);
}
[data-palette="obsidian"] .numbers .stat .n { color: var(--ink); }
.numbers .stat .l {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.5rem;
  display: block;
  line-height: 1.3;
}
@media (max-width: 540px) {
  .numbers { grid-template-columns: repeat(2, 1fr); gap: 1.3rem; }
}

/* ============== CENTERPIECE / FIG. 1 ============== */

.figure {
  margin: 1rem auto;
  max-width: var(--measure-wide);
  width: calc(100% + 8rem);
  transform: translateX(-4rem);
}
@media (max-width: 820px) {
  .figure { width: 100%; transform: none; }
}

.figure-frame {
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-color: color-mix(in srgb, var(--rule) 30%, transparent);
  padding: 2rem 2rem 1.6rem 2rem;
  position: relative;
}

.figure-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.4rem;
  margin-bottom: 1.4rem;
  border-bottom: 1px solid var(--rule);
  border-bottom-color: color-mix(in srgb, var(--rule) 30%, transparent);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.figure-head .title { color: var(--ink); }

.decay-log {
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.decay-log .row {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed transparent;
  opacity: 0;
  transform: translateY(2px);
  transition: opacity 800ms ease, transform 800ms ease, color 800ms ease;
}
.decay-log .row.in {
  opacity: 1;
  transform: translateY(0);
}
.decay-log .row .gen {
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.32rem;
  white-space: nowrap;
}
.decay-log .row.origin .gen { color: var(--accent); }
.decay-log .row.origin .text { color: var(--ink); }
.decay-log .row.g1 .text { color: var(--ink-soft); }
.decay-log .row.g2 .text { color: color-mix(in srgb, var(--ink-soft) 75%, var(--muted)); }
.decay-log .row.g3 .text { color: color-mix(in srgb, var(--ink-soft) 50%, var(--muted)); font-style: italic; }
.decay-log .row.g4 .text { color: var(--muted); font-style: italic; }
.decay-log .row .text { padding-top: 0.05rem; }
.decay-log .row .text .drift { color: var(--accent); font-weight: 500; }

.decay-log .row .text .cite {
  display: block;
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 0.25rem;
  font-style: normal;
}

/* ============== FIG CAPTION (used by Fig.1) ============== */
.figure-caption {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 1.6rem 0 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  border-top-color: color-mix(in srgb, var(--rule) 22%, transparent);
}
.figure-caption .lede {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.6rem;
}

/* ============== MANIFESTO ============== */

.manifesto-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0 0;
  counter-reset: tenet;
}
.manifesto-list > li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.6rem;
  padding: 2rem 0;
  border-top: 1px solid var(--rule);
  border-top-color: color-mix(in srgb, var(--rule) 25%, transparent);
  align-items: start;
}
.manifesto-list > li:last-child {
  border-bottom: 1px solid var(--rule);
  border-bottom-color: color-mix(in srgb, var(--rule) 25%, transparent);
}
.manifesto-list .roman {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 3.4rem;
  color: var(--accent);
  line-height: 0.95;
  padding-top: 0;
  letter-spacing: 0.02em;
  text-align: right;
}
[data-palette="obsidian"] .manifesto-list .roman { color: var(--ink); }
.manifesto-list .tenet-head {
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: 0.002em;
  margin: 0 0 0.6rem 0;
  line-height: 1.2;
  color: var(--ink);
}
.manifesto-list .tenet-body {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  text-wrap: pretty;
}
.manifesto-list .tenet-body em {
  font-style: italic;
  color: var(--ink);
}

/* ============== ACADEMY ============== */

.founders {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem;
  margin: 2rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  border-top-color: color-mix(in srgb, var(--rule) 25%, transparent);
  border-bottom-color: color-mix(in srgb, var(--rule) 25%, transparent);
  padding: 1.4rem 0;
}
.founders .person .name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.02rem;
  display: block;
}
.founders .person .role {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-top: 0.3rem;
}
@media (max-width: 540px) {
  .founders { grid-template-columns: 1fr; gap: 1rem; }
}

/* ============== WAITLIST ============== */

.waitlist {
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-color: color-mix(in srgb, var(--rule) 25%, transparent);
  padding: 2.4rem 2rem;
  margin: 2rem 0 0 0;
}
.waitlist h2 { margin-bottom: 0.6rem; }
.waitlist .blurb {
  color: var(--ink-soft);
  margin-bottom: 1.6rem;
  font-size: 1.02rem;
}
.waitlist form {
  display: grid;
  gap: 0.8rem;
}
.waitlist .field {
  display: grid;
  gap: 0.35rem;
}
.waitlist label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.waitlist input,
.waitlist textarea {
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.4;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-color: color-mix(in srgb, var(--rule) 35%, transparent);
  color: var(--ink);
  padding: 0.7rem 0.9rem;
  outline: none;
  transition: border-color 200ms ease, background 200ms ease;
}
.waitlist input:focus,
.waitlist textarea:focus {
  border-color: var(--accent);
  background: var(--paper);
}
.waitlist textarea { resize: vertical; min-height: 4.5rem; }

.waitlist .row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}
@media (max-width: 540px) {
  .waitlist .row-2 { grid-template-columns: 1fr; }
}

.waitlist .submit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.6rem;
  flex-wrap: wrap;
}
.waitlist button {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--paper);
  border: 0;
  padding: 0.95rem 1.6rem;
  cursor: pointer;
  transition: background 200ms ease, transform 100ms ease;
}
.waitlist button:hover { background: var(--accent); }
.waitlist button:active { transform: translateY(1px); }
.waitlist .smallprint {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

.waitlist .success {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
  padding: 0.9rem 0 0 0;
  font-size: 0.98rem;
  display: none;
}
.waitlist.submitted form { display: none; }
.waitlist.submitted .success { display: block; }

/* ============== COLOPHON ============== */

.colophon {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  border-top-color: color-mix(in srgb, var(--rule) 25%, transparent);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--muted);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.colophon .right { text-align: right; }
.colophon strong { color: var(--ink); font-weight: 500; }
@media (max-width: 540px) {
  .colophon { grid-template-columns: 1fr; }
  .colophon .right { text-align: left; }
}

/* ============== PALETTE TOGGLE (inline, no js needed) ============== */

.palette-toggle {
  position: fixed;
  bottom: 1.4rem;
  right: 1.4rem;
  display: flex;
  gap: 0.4rem;
  background: var(--paper-deep);
  padding: 0.5rem;
  border: 1px solid var(--rule);
  border-color: color-mix(in srgb, var(--rule) 30%, transparent);
  z-index: 100;
}
.palette-toggle button {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  transition: color 150ms ease, background 150ms ease;
}
.palette-toggle button:hover { color: var(--ink); }
.palette-toggle button.active { color: var(--gold); background: var(--paper); }

/* tweaks panel (mounted from React, but base styles here) */
#tweaks-root { position: fixed; bottom: 0; right: 0; z-index: 200; }

/* ============== HERO ANIMATIONS — crystal + stars ============== */

.hero-ornament-large .crystal-spin {
  animation: none;
}
.hero-ornament-large .crystal-glow {
  animation: none;
  opacity: 0.8;
}
.hero-ornament-large .crystal-nodes circle {
  animation: none;
  opacity: 1;
}
.hero-ornament-large .crystal-twinkles { display: none; }

/* ============== Nine-crystal wreath — Manifesto page ============== */
#wreath-crystal svg { overflow: visible; }
.wreath .wc {
  transform-box: fill-box;
  transform-origin: center;
  animation: wc-pulse 7s ease-in-out infinite;
}
.wreath .wc-0 { animation-delay: 0s; }
.wreath .wc-1 { animation-delay: 0.5s; }
.wreath .wc-2 { animation-delay: 1.0s; }
.wreath .wc-3 { animation-delay: 1.5s; }
.wreath .wc-4 { animation-delay: 2.0s; }
.wreath .wc-5 { animation-delay: 2.5s; }
.wreath .wc-6 { animation-delay: 3.0s; }
.wreath .wc-7 { animation-delay: 3.5s; }
.wreath .wc-8 { animation-delay: 4.0s; }
@keyframes wc-pulse {
  0%, 100% { opacity: 0.7; }
  50%      { opacity: 1; }
}

/* ============== Scatter crystal — Problem page ============== */
#scatter-crystal svg { overflow: visible; }
.scatter-nodes .sn {
  transform-box: fill-box;
  transform-origin: center;
}
.scatter-nodes .sn-0 { animation: sn-drift-0 6s ease-in-out infinite; }
.scatter-nodes .sn-1 { animation: sn-drift-1 7s ease-in-out infinite; }
.scatter-nodes .sn-2 { animation: sn-drift-2 5.5s ease-in-out infinite; }
.scatter-nodes .sn-3 { animation: sn-drift-3 8s ease-in-out infinite; }
.scatter-nodes .sn-4 { animation: sn-drift-4 6.5s ease-in-out infinite; }
.scatter-nodes .sn-5 { animation: sn-drift-5 7.5s ease-in-out infinite; }
@keyframes sn-drift-0 {
  0%, 100% { transform: translate(0, 0); opacity: 1; }
  35%      { transform: translate(10px, 6px); opacity: 0.55; }
  70%      { transform: translate(-6px, 9px); opacity: 0.8; }
}
@keyframes sn-drift-1 {
  0%, 100% { transform: translate(0, 0); opacity: 1; }
  40%      { transform: translate(-12px, 4px); opacity: 0.5; }
  75%      { transform: translate(-4px, -8px); opacity: 0.85; }
}
@keyframes sn-drift-2 {
  0%, 100% { transform: translate(0, 0); opacity: 1; }
  30%      { transform: translate(8px, -10px); opacity: 0.6; }
  65%      { transform: translate(-9px, -5px); opacity: 0.75; }
}
@keyframes sn-drift-3 {
  0%, 100% { transform: translate(0, 0); opacity: 1; }
  45%      { transform: translate(-7px, -11px); opacity: 0.55; }
  80%      { transform: translate(11px, -6px); opacity: 0.8; }
}
@keyframes sn-drift-4 {
  0%, 100% { transform: translate(0, 0); opacity: 1; }
  35%      { transform: translate(13px, 3px); opacity: 0.5; }
  70%      { transform: translate(6px, -10px); opacity: 0.85; }
}
@keyframes sn-drift-5 {
  0%, 100% { transform: translate(0, 0); opacity: 1; }
  50%      { transform: translate(-5px, 12px); opacity: 0.55; }
  85%      { transform: translate(9px, 7px); opacity: 0.75; }
}
#scatter-crystal .wrong-1 {
  animation: wrong-flicker-1 11s ease-in-out infinite;
}
#scatter-crystal .wrong-2 {
  animation: wrong-flicker-2 13s ease-in-out infinite;
  animation-delay: 4s;
}
@keyframes wrong-flicker-1 {
  0%, 20%, 100% { opacity: 0; }
  30%, 45%      { opacity: 0.65; }
  60%, 80%      { opacity: 0.15; }
}
@keyframes wrong-flicker-2 {
  0%, 30%, 100% { opacity: 0; }
  40%, 55%      { opacity: 0.6; }
  70%, 85%      { opacity: 0.2; }
}

/* ============== Crystal pair — Problem page diagram ============== */
.crystal-pair {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 5vw, 4rem);
  margin: 0 auto 2.4rem;
}
.crystal-pair > .hero-ornament {
  width: clamp(140px, 22vw, 240px);
  height: auto;
  aspect-ratio: 1;
  margin: 0;
}
.crystal-pair > .hero-ornament svg { overflow: visible; }
@media (max-width: 540px) {
  .crystal-pair { gap: 1.2rem; }
  .crystal-pair > .hero-ornament { width: clamp(110px, 36vw, 180px); }
}

/* ============== Decay crystal — ghosts/echoes ============== */
#decay-crystal svg { overflow: visible; }
.ghost {
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity 400ms ease;
}
.ghost-0 { opacity: 1; }
.ghost-1 { opacity: 0.55; animation: ghost-drift-1 9s ease-in-out infinite; }
.ghost-2 { opacity: 0.30; animation: ghost-drift-2 9s ease-in-out infinite; }
.ghost-3 { opacity: 0.15; animation: ghost-drift-3 9s ease-in-out infinite; }

@keyframes ghost-drift-1 {
  0%, 100% { transform: translate(1.5px, 0.5px) rotate(0deg); }
  50%      { transform: translate(3.5px, 1.5px) rotate(-1deg); }
}
@keyframes ghost-drift-2 {
  0%, 100% { transform: translate(3.5px, 2px) rotate(0deg); }
  50%      { transform: translate(7px, 4px) rotate(-2deg); }
}
@keyframes ghost-drift-3 {
  0%, 100% { transform: translate(6.5px, 4px) rotate(1deg); }
  50%      { transform: translate(12px, 7.5px) rotate(-3deg); }
}

.crystal-spin {
  animation: crystal-rotate 60s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}
@keyframes crystal-rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.crystal-glow {
  animation: crystal-breathe 6s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}
@keyframes crystal-breathe {
  0%, 100% { opacity: 0.6; transform: scale(0.95); }
  50%      { opacity: 1.0; transform: scale(1.1); }
}
.crystal-nodes circle {
  animation: crystal-pulse 4.5s ease-in-out infinite;
}
.crystal-nodes circle:nth-child(2n) { animation-delay: 0.8s; }
.crystal-nodes circle:nth-child(3n) { animation-delay: 1.6s; }
.crystal-nodes circle:nth-child(5n) { animation-delay: 2.4s; }
@keyframes crystal-pulse {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 1; }
}
.crystal-twinkles .tw path {
  animation: tw-flash 6s ease-in-out infinite;
}
@keyframes tw-flash {
  0%, 90%, 100% { opacity: 0; transform: scale(0.5); }
  93%           { opacity: 0.9; transform: scale(1.2); }
  96%           { opacity: 0.3; transform: scale(0.8); }
}
.crystal-twinkles .tw {
  transform-box: fill-box;
  transform-origin: center;
}

/* star field */
.star-field {
  color: var(--accent);
  opacity: 0.22;
}
[data-palette="nebula"] .star-field {
  color: var(--accent);
  opacity: 0.85;
}
[data-palette="obsidian"] .star-field {
  color: var(--ink);
  opacity: 0.85;
}
.star-field svg .stars circle {
  animation: star-twinkle 5s ease-in-out infinite;
}
@keyframes star-twinkle {
  0%, 100% { opacity: var(--o, 0.4); }
  50%      { opacity: calc(var(--o, 0.4) * 0.35); }
}
/* In Observatory mode the constellation lines fade in */
.constellation-lines { opacity: 0; transition: opacity 1.2s ease; }
[data-palette="obsidian"] .constellation-lines { opacity: 0.8; }
[data-palette="nebula"] .constellation-lines { opacity: 0.6; }