/* ============================================================
   Ligature Press — main.css
   Bauhaus starting point, editorial drift, atelier closing.
   Fonts via fonts.bunny.net (EU CDN).
   ============================================================ */

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; }
input { font: inherit; }
ul, ol { list-style: none; }

/* ── Tokens ──────────────────────────────────────────────────── */
:root {
  /* Bauhaus palette */
  --bone: #f3ece0;
  --bone-soft: #ebe3d4;
  --bone-shadow: #d9ceb8;
  --ink: #0e1117;
  --ink-rich: #1c2030;
  --cinnabar: #d62828;
  --cinnabar-deep: #b41e1e;
  --saffron: #f4b400;
  --saffron-deep: #d29900;
  --prussian: #003049;
  --graphite: #2a2a2a;
  --ash: #6a6a6a;
  --ash-soft: #9a9a9a;

  /* Fonts (Bunny Fonts) */
  --font-display: "Jost", "Helvetica Neue", Helvetica, system-ui, sans-serif;
  --font-serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;

  /* Spacing */
  --gutter: 1.25rem;
  --section-y: 4rem;
  --section-y-lg: 7rem;

  /* Motion */
  --motion-fast: 150ms ease;
  --motion-mid: 320ms cubic-bezier(0.4, 0, 0.2, 1);
  --motion-slow: 600ms cubic-bezier(0.4, 0, 0.2, 1);

  --max-w: 1280px;
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }

body {
  background: var(--bone);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.55;
  min-height: 100dvh;
  /* Subtle paper texture via radial vignette — keeps "print shop" feel */
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(244, 180, 0, 0.05), transparent 55%),
    radial-gradient(ellipse at 80% 100%, rgba(0, 48, 73, 0.04), transparent 60%);
}

a { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; transition: color var(--motion-fast); }
a:hover { color: var(--cinnabar); }

/* Reusable italic / serif drift inline */
.serif { font-family: var(--font-serif); font-weight: 500; font-style: normal; }
.serif.italic, .italic { font-style: italic; }
.mono { font-family: var(--font-mono); }
.amp, .amp-small { font-family: var(--font-serif); font-style: italic; color: var(--cinnabar); font-weight: 500; }
.amp { font-size: 1.5em; }
.amp-small { font-size: 1.05em; }

/* ── Stage scaffolding ───────────────────────────────────────── */
main { min-height: 100dvh; }
.stage { animation: stageFadeIn 0.5s ease both; }
.stage[hidden] { display: none !important; }
@keyframes stageFadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ============================================================
   STAGE 1 — HERO + SCROLL NARRATIVE
   ============================================================ */

.stage--hero {
  display: block;          /* override flex; we want full-width sections */
  padding: 0;
}

/* ── Topbar ─────────────────────────────────────────────────── */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem var(--gutter);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  max-width: var(--max-w);
  margin: 0 auto;
}
.topbar__mark { display: inline-flex; align-items: center; gap: 0.55rem; font-weight: 700; }
.mark-circle {
  display: inline-block;
  width: 0.8rem; height: 0.8rem;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0.45rem 0 0 0 var(--saffron), 0.9rem 0 0 0 var(--prussian);
  margin-right: 1.1rem;
}
.topbar__meta { display: none; gap: 1.25rem; }
.meta-line { white-space: nowrap; }
@media (min-width: 700px) {
  .topbar__meta { display: inline-flex; }
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding: 2.5rem var(--gutter) 3rem;
  max-width: var(--max-w);
  margin: 0 auto;
  align-items: start;
}

.kicker {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--ink);
  margin-bottom: 1.25rem;
}
.kicker__num {
  display: inline-block;
  background: var(--ink);
  color: var(--bone);
  padding: 0.15rem 0.4rem;
  border-radius: 1px;
  font-weight: 700;
}

.hero__h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 9vw, 6rem);
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin-bottom: 1.5rem;
}
.hero__h1 .line { display: block; }
.hero__h1 .serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--cinnabar); }

.hero__sub {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  font-weight: 400;
  line-height: 1.55;
  color: var(--graphite);
  max-width: 44ch;
  margin-bottom: 2.25rem;
}

/* Hero form: each field a labelled column, big inputs, big button */
.hero__form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  align-items: stretch;
  margin-bottom: 1rem;
  max-width: 520px;
}
.field { display: flex; flex-direction: column; gap: 0.3rem; }
.field__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--ash);
}
.field input {
  width: 100%;
  padding: 0.85rem 0.95rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--ink);
  outline: none;
  transition: border-color var(--motion-fast), background var(--motion-fast);
}
.field input:focus {
  border-bottom-color: var(--cinnabar);
  background: rgba(244, 180, 0, 0.08);
}

.hero__form .amp {
  align-self: end;
  padding: 0 0 0.4rem;
  text-align: center;
  font-size: 2rem;
  color: var(--cinnabar);
}

.cta-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 1rem 1.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--bone);
  background: var(--ink);
  border: none;
  border-radius: 1px;
  text-decoration: none;
  transition: background var(--motion-fast), transform var(--motion-fast);
  white-space: nowrap;
}
.cta-primary:hover { background: var(--cinnabar); color: var(--bone); }
.cta-primary:active { transform: translateY(1px); }
.cta-primary__arrow { font-family: var(--font-serif); font-style: italic; font-size: 1.1em; line-height: 1; }
.cta-primary--lg {
  padding: 1.25rem 2.25rem;
  font-size: 1.05rem;
  letter-spacing: 0.14em;
}

.hero__priceline {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--ash);
  margin-top: 0.5rem;
}
.hero__priceline strong { color: var(--ink); font-weight: 500; }

/* Hero poster (column 2) */
.hero__poster {
  position: relative;
  align-self: start;
  display: grid;
  grid-template-areas: "stack";
  width: 100%;
  max-width: 480px;
  margin: 0.25rem auto 0;
}
.hero__poster > * { grid-area: stack; }
.hero__poster-block {
  background: var(--saffron);
  margin-left: 1.5rem;
  margin-top: 1.5rem;
  width: calc(100% - 1.5rem);
  height: calc(100% - 1.5rem);
  align-self: end;
  justify-self: end;
}
.hero__poster-img {
  width: 100%;
  aspect-ratio: 1 / 1.414;
  object-fit: cover;
  box-shadow:
    0 24px 56px rgba(14, 17, 23, 0.22),
    0 4px 12px rgba(14, 17, 23, 0.12);
  position: relative;
  z-index: 2;
  background: var(--bone-soft);
}
/* Scroll hint */
.scroll-hint {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter) 3.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--ash);
}
.scroll-hint__line {
  display: block;
  flex: 0 0 4rem;
  height: 1px;
  background: var(--ink);
}

/* ── Specimens strip ────────────────────────────────────────── */
.specimens {
  padding: var(--section-y) var(--gutter);
  max-width: var(--max-w);
  margin: 0 auto;
}
.specimens__head { margin-bottom: 2.5rem; max-width: 50ch; }
.section-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4.5vw, 3.2rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.section-h2 .serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--cinnabar); }

.specimens__strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.specimen { display: flex; flex-direction: column; gap: 0.75rem; }
.specimen img {
  width: 100%;
  aspect-ratio: 1 / 1.414;
  object-fit: cover;
  background: var(--bone-soft);
  box-shadow: 0 8px 24px rgba(14, 17, 23, 0.12);
}
.specimen figcaption {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  line-height: 1.4;
}
.specimen figcaption .mono { display: block; font-weight: 400; font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ash); margin-top: 0.15rem; }

.specimen--accent {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--cinnabar);
  color: var(--bone);
  padding: 1.5rem;
  aspect-ratio: 1 / 1.414;
}
.specimen--accent figcaption { color: var(--bone); }
.specimen__poke {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.8vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
}
.specimen__poke .serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--saffron); display: block; }
.specimen--accent .link-arrow { color: var(--bone); text-decoration: none; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.16em; font-weight: 500; }
.specimen--accent .link-arrow:hover { color: var(--saffron); }
.link-arrow { text-decoration: none; }

/* ── How it works ───────────────────────────────────────────── */
.howitworks {
  padding: var(--section-y) var(--gutter);
  max-width: var(--max-w);
  margin: 0 auto;
  border-top: 1px solid var(--ink);
}
.howitworks .section-h2 { margin-bottom: 2.5rem; max-width: 26ch; }
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.step {
  position: relative;
  padding: 2rem 1.75rem 2.25rem;
  border: 2px solid var(--ink);
  background: var(--bone);
}
.step__num {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 3.6rem;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}
.step__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  margin-bottom: 0.85rem;
}
.step__body {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--graphite);
  max-width: 36ch;
}
.step--1 { background: var(--cinnabar); color: var(--bone); }
.step--1 .step__num, .step--1 .step__title { color: var(--bone); }
.step--1 .step__body { color: var(--bone); }
.step--2 { background: var(--saffron); color: var(--ink); }
.step--3 { background: var(--prussian); color: var(--bone); }
.step--3 .step__num, .step--3 .step__title { color: var(--bone); }
.step--3 .step__body { color: var(--bone); }

/* ── The Method — INVERTED dark section ─────────────────────── */
.method {
  background: var(--ink);
  color: var(--bone);
  padding: var(--section-y-lg) var(--gutter);
  margin: 0;
}
.method .kicker, .method .section-h2 { color: var(--bone); }
.method .kicker__num { background: var(--saffron); color: var(--ink); }
.method__grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
.method__copy { max-width: 48ch; }
.method__copy .section-h2 { margin-bottom: 1.5rem; }
.method__copy .section-h2 .serif { color: var(--saffron); }
.method__copy p { color: var(--bone-shadow); font-size: 1.02rem; line-height: 1.7; margin-bottom: 1rem; }
.method__copy a { color: var(--saffron); text-decoration: none; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; font-weight: 500; }
.method__copy a:hover { color: var(--bone); }
.method__code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--bone-shadow);
  background: var(--ink-rich);
  border: 1px solid #2a3142;
  padding: 1.75rem 1.5rem;
  overflow-x: auto;
  white-space: pre;
}
.method__code .c { color: #6c7488; font-style: italic; }
.method__code .s { color: var(--saffron); }

/* ── Materials ──────────────────────────────────────────────── */
.materials {
  padding: var(--section-y-lg) var(--gutter);
  max-width: var(--max-w);
  margin: 0 auto;
}
.materials .section-h2 { margin-bottom: 2.5rem; max-width: 22ch; }
.materials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.material { padding: 1.75rem; background: var(--bone-soft); border: 1px solid var(--bone-shadow); }
.material h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.3rem;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 0.85rem;
}
.material p { font-size: 0.95rem; line-height: 1.65; color: var(--graphite); margin-bottom: 1.1rem; }
.material__specs { font-family: var(--font-mono); font-size: 0.85rem; color: var(--ink); }
.material__specs li { padding: 0.4rem 0; border-top: 1px dashed var(--bone-shadow); display: flex; justify-content: space-between; }
.material__specs li:first-child { border-top: none; }
.material--meta { background: var(--ink); color: var(--bone); border-color: var(--ink); }
.material--meta h3 { color: var(--saffron); font-style: italic; }
.material--meta p { color: var(--bone-shadow); }
.material__assurance { font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.9 !important; color: var(--bone) !important; }
.dot { display: inline-block; width: 0.55rem; height: 0.55rem; border-radius: 50%; margin-right: 0.55rem; vertical-align: middle; }
.dot--red { background: var(--cinnabar); }
.dot--yellow { background: var(--saffron); }
.dot--blue { background: #2a6fa0; }

/* ── Pricing ladder ─────────────────────────────────────────── */
.pricing {
  background: var(--bone-soft);
  padding: var(--section-y-lg) var(--gutter);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.pricing > * { max-width: var(--max-w); margin-left: auto; margin-right: auto; }
.pricing .section-h2 { margin-bottom: 2.5rem; max-width: 24ch; }
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.rung {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1.1rem 1.1rem;
  background: var(--bone);
  border: 1px solid var(--ink);
  min-height: 100px;
  transition: background var(--motion-fast), color var(--motion-fast);
}
.rung__label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--ink);
}
.rung__label .mono { display: block; font-size: 0.7rem; color: var(--ash); margin-top: 0.15rem; }
.rung__price {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.6rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.rung--hero { background: var(--saffron); }
.rung--peak { background: var(--ink); color: var(--bone); }
.rung--peak .rung__label, .rung--peak .rung__price { color: var(--bone); }
.rung--add { background: var(--cinnabar); color: var(--bone); }
.rung--add .rung__label, .rung--add .rung__price { color: var(--bone); }
.rung--add .rung__label .mono { color: var(--bone-shadow); }
.pricing__note { font-size: 0.95rem; color: var(--graphite); max-width: 56ch; }
.pricing__note .link-arrow { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.06em; color: var(--cinnabar); font-weight: 500; text-decoration: none; }
.pricing__note .link-arrow:hover { color: var(--ink); }

/* ── Editions ───────────────────────────────────────────────── */
.editions {
  padding: var(--section-y-lg) var(--gutter);
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}
.editions__big {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(5rem, 22vw, 14rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 0.05em;
}
.lp { color: var(--cinnabar); }
.lp-num { color: var(--ink); }
.editions__copy { max-width: 50ch; }
.editions__copy .section-h2 { margin-bottom: 1.25rem; }
.editions__copy p { font-size: 1rem; line-height: 1.7; color: var(--graphite); margin-bottom: 0.85rem; }

/* ── Closing ────────────────────────────────────────────────── */
.closing {
  padding: var(--section-y) var(--gutter) calc(var(--section-y) - 1rem);
  text-align: center;
  background: var(--bone);
}
.closing__line {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2rem, 6vw, 4rem);
  color: var(--ink);
  margin-bottom: 2rem;
  line-height: 1.1;
}

/* ── Footer ─────────────────────────────────────────────────── */
.sitefoot {
  background: var(--ink);
  color: var(--bone);
  padding: 3rem var(--gutter);
}
.sitefoot > * { max-width: var(--max-w); margin-left: auto; margin-right: auto; }
.sitefoot__mark {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
}
.sitefoot__nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0.85rem; margin-bottom: 1rem; font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.06em; }
.sitefoot__nav a { color: var(--bone); text-decoration: none; }
.sitefoot__nav a:hover { color: var(--saffron); }
.sitefoot__fineprint { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ash-soft); }

/* ============================================================
   STAGE 2 — Ligature picker (after user submits names)
   ============================================================ */
.stage--ligature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 3rem var(--gutter) 4rem;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.ligature-preview { display: flex; justify-content: center; align-items: center; }
.ligature-preview svg { max-width: min(80vw, 380px); height: auto; }
.caption {
  font-family: var(--font-serif); font-style: italic; font-size: 1.05rem;
  color: var(--graphite); letter-spacing: 0.01em;
}
.format-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  width: 100%;
}
.format-card {
  background: var(--bone);
  border: 2px solid var(--ink);
  padding: 1.25rem 1.5rem;
  text-align: left;
  cursor: pointer;
  transition: background var(--motion-fast), color var(--motion-fast);
}
.format-card:hover { background: var(--saffron); }
.format-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--ink);
  position: relative;
  padding-right: 1.5rem;
  text-transform: uppercase;
}
.format-card h3::after {
  content: '+';
  position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  color: var(--cinnabar); font-weight: 700; font-size: 1.4rem; line-height: 1;
  transition: transform var(--motion-fast);
}
.format-card[aria-expanded="true"] h3::after,
.format-card.open h3::after { transform: translateY(-50%) rotate(45deg); }
.sku-list {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  animation: skuReveal 0.25s ease both;
}
.sku-list[hidden] { display: none; }
@keyframes skuReveal { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }
.sku-list li button {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: var(--font-display); font-weight: 500;
  font-size: 0.95rem; color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  text-align: left;
  transition: background var(--motion-fast), color var(--motion-fast);
}
.sku-list li button:hover { background: var(--ink); color: var(--bone); }
.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--ash);
  text-decoration: none;
}
.back-link:hover { color: var(--cinnabar); }

/* ============================================================
   STAGE 3 — Reveal
   ============================================================ */
.stage--reveal {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 3rem var(--gutter) 4rem;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}
.reveal-poster {
  display: block;
  width: min(80vw, 440px);
  height: auto;
  box-shadow: 0 24px 56px rgba(14, 17, 23, 0.25), 0 6px 16px rgba(14, 17, 23, 0.12);
  animation: posterReveal 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes posterReveal { from { opacity: 0; transform: scale(0.95) translateY(12px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.reveal-caption {
  font-family: var(--font-serif); font-style: italic;
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--ink); max-width: 32ch;
}
#buy-button {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 2.5rem;
  font-family: var(--font-display);
  font-weight: 700; font-size: 1rem; letter-spacing: 0.12em;
  color: var(--bone); background: var(--cinnabar);
  border: none; border-radius: 1px;
  text-decoration: none;
  transition: background var(--motion-fast), transform var(--motion-fast);
  box-shadow: 0 4px 14px rgba(214, 40, 40, 0.3);
}
#buy-button:hover { background: var(--cinnabar-deep); transform: translateY(-2px); }
.coa-mention {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--ash);
  max-width: 50ch;
  line-height: 1.6;
}
.spinner {
  display: flex; flex-direction: column; align-items: center; gap: 1.25rem;
}
.spinner::before {
  content: ''; display: block; width: 36px; height: 36px;
  border: 2px solid var(--bone-shadow); border-top-color: var(--cinnabar);
  border-radius: 50%; animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner p { font-family: var(--font-serif); font-style: italic; color: var(--graphite); font-size: 1rem; }
.spinner p.subtle { font-family: var(--font-mono); font-style: normal; color: var(--ash); font-size: 0.78rem; letter-spacing: 0.06em; }
.subtle { font-size: 0.85rem; color: var(--ash); }

/* ============================================================
   Waitlist variant
   ============================================================ */
.stage--waitlist {
  display: block;
  padding: 0;
}
.topbar--waitlist { border-bottom: 1px solid var(--ink); }
.waitlist__inner {
  max-width: 560px;
  margin: 0 auto;
  padding: 6rem var(--gutter) 5rem;
  text-align: left;
}
.waitlist__inner h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 1.25rem;
}
.waitlist__inner h1 .serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--cinnabar); }
.waitlist__inner > p { font-size: 1.05rem; line-height: 1.65; color: var(--graphite); max-width: 48ch; margin-bottom: 1.75rem; }
#waitlist-form { display: flex; flex-direction: column; gap: 0.75rem; }
#waitlist-form input[type="email"] {
  width: 100%; padding: 0.85rem 1rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink); background: transparent;
  border: none; border-bottom: 2px solid var(--ink);
  outline: none;
  transition: border-color var(--motion-fast);
}
#waitlist-form input[type="email"]::placeholder { color: var(--ash-soft); }
#waitlist-form input[type="email"]:focus { border-bottom-color: var(--cinnabar); }
#waitlist-form button[type="submit"] {
  align-self: flex-start;
  padding: 1rem 2rem;
  font-family: var(--font-display);
  font-weight: 700; font-size: 0.95rem; letter-spacing: 0.12em;
  color: var(--bone); background: var(--ink);
  border: none; border-radius: 1px;
  transition: background var(--motion-fast);
}
#waitlist-form button[type="submit"]:hover { background: var(--cinnabar); }

/* ============================================================
   Algorithm page (uses same base.html)
   ============================================================ */
main.algorithm {
  max-width: 720px;
  margin: 0 auto;
  padding: 4rem var(--gutter) 5rem;
}
main.algorithm h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ink);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--ink);
}
main.algorithm p {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--graphite);
  max-width: 60ch;
  margin-bottom: 1.5rem;
}
main.algorithm a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--cinnabar);
  text-decoration: none;
  display: inline-block;
  margin-top: 1.5rem;
}
main.algorithm a:hover { color: var(--ink); }

/* ============================================================
   Thanks page
   ============================================================ */
main.thanks {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: 100dvh; text-align: center; padding: 3rem var(--gutter); gap: 1.5rem;
}
main.thanks h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1; letter-spacing: -0.03em; color: var(--ink);
}
main.thanks h1::after {
  content: '.'; color: var(--cinnabar);
}
main.thanks p { font-family: var(--font-serif); font-style: italic; font-size: 1.1rem; color: var(--graphite); max-width: 44ch; }
main.thanks small { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; color: var(--ash); }
main.thanks a { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.08em; color: var(--ash); text-decoration: none; }
main.thanks a:hover { color: var(--cinnabar); }

/* ============================================================
   Tablet — ≥640px
   ============================================================ */
@media (min-width: 640px) {
  .hero {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    padding: 3.5rem var(--gutter) 4rem;
  }
  .hero__form {
    grid-template-columns: 1fr auto 1fr;
    align-items: end;
    gap: 0.85rem;
  }
  .hero__form .cta-primary { grid-column: 1 / -1; margin-top: 0.5rem; justify-self: start; padding: 1rem 2rem; }

  .specimens__strip { grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

  .steps { grid-template-columns: repeat(3, 1fr); gap: 0; }
  .step { border-right: none; }
  .step:last-child { border-right: 2px solid var(--ink); }

  .method__grid { grid-template-columns: 1fr 1.1fr; gap: 3.5rem; }

  .materials__grid { grid-template-columns: 1fr 1fr; }
  .material--meta { grid-column: 1 / -1; }

  .pricing__grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; }

  .editions { grid-template-columns: 1.1fr 1fr; gap: 3rem; }
}

/* ============================================================
   Desktop — ≥1024px
   ============================================================ */
@media (min-width: 1024px) {
  :root { --gutter: 2.5rem; --section-y: 6rem; --section-y-lg: 9rem; }

  .hero {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4.5rem;
    padding: 4.5rem var(--gutter) 5rem;
    align-items: center;
  }
  .hero__poster { max-width: 520px; }

  .pricing__grid { grid-template-columns: repeat(4, 1fr); gap: 1.1rem; }
  .rung--hero { grid-column: span 2; }
  .rung--add { grid-column: span 2; }

  .materials__grid { grid-template-columns: 1fr 1fr 0.95fr; }
  .material--meta { grid-column: auto; }

  .editions__big { font-size: clamp(8rem, 18vw, 16rem); }
}

/* ============================================================
   Reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .stage, .reveal-poster, .spinner::before { animation: none !important; }
  .spinner::before { animation: spin 1.5s linear infinite !important; }
}