/* ============================================================
   TOHU LABS — prestige rebuild
   Editorial serif (Fraunces) · clean sans (Hanken Grotesk)
   · archival mono (IBM Plex Mono) over a generative cosmos.
   ============================================================ */

:root {
  color-scheme: dark;

  /* Palette — warm paper light on deep indigo void */
  --void: #050610;
  --ink: #f3efe6;          /* warm paper white */
  --soft: rgba(243, 239, 230, 0.62);
  --faint: rgba(243, 239, 230, 0.4);
  --whisper: rgba(243, 239, 230, 0.26);
  --line: rgba(243, 239, 230, 0.1);
  --line-strong: rgba(243, 239, 230, 0.22);

  --violet: #8b7bff;
  --teal: #5fe3d0;
  --amber: #f5b85a;

  --max: 1200px;
  --gutter: clamp(22px, 5vw, 64px);

  /* driven by JS */
  --scroll: 0;
  --page: 0;
  --cursor-x: 50vw;
  --cursor-y: 42vh;
  --cursor-strength: 0;

  /* wordmark ignite */
  --title-x: 50%;
  --title-y: 50%;
  --title-light: 0;
  --title-ignition: 0;
  --title-radius: 240px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--void);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: transparent; /* let the fixed WebGL canvas show through; html holds the fallback void */
  color: var(--ink);
  font-family: "Hanken Grotesk", system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.005em;
  /* gentle, inherited legibility floor over the living field — kept soft so the
     design stays clean; headings/body strengthen it below. */
  text-shadow: 0 1px 14px rgba(5, 6, 16, 0.55);
}

/* Deep vignette + a warm glow that rises from below as you scroll
   — the "let there be light" emergence, mirrored in CSS. */
body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background:
    radial-gradient(
      ellipse 120% 70% at 50% calc(118% - var(--page) * 64%),
      rgba(245, 184, 90, calc(0.06 + var(--page) * 0.22)),
      rgba(139, 123, 255, calc(0.03 + var(--page) * 0.05)) 34%,
      transparent 62%
    ),
    radial-gradient(ellipse 140% 100% at 50% -20%, rgba(5, 6, 16, 0.9), transparent 60%),
    linear-gradient(to bottom, rgba(5, 6, 16, 0.5) 0%, transparent 24%, transparent 72%, rgba(5, 6, 16, 0.72) 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: rgba(245, 184, 90, 0.26);
  color: #fff;
}

/* ---------- WebGL stage + atmosphere ---------- */

#space-stage {
  position: fixed;
  inset: 0;
  z-index: -3;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.cursor-light {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: calc(0.3 + var(--cursor-strength) * 0.4);
  background: radial-gradient(
    circle 240px at var(--cursor-x) var(--cursor-y),
    rgba(245, 184, 90, 0.06),
    rgba(139, 123, 255, 0.04) 36%,
    transparent 70%
  );
  transition: opacity 600ms ease;
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 2 * var(--gutter), var(--max));
  margin-inline: auto;
  padding: 26px 0 18px;
}

.site-header::before {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: -1;
  height: 172px;
  pointer-events: none;
  content: "";
  background: linear-gradient(
    to bottom,
    rgba(5, 6, 16, 0.95),
    rgba(5, 6, 16, 0.66) 46%,
    rgba(5, 6, 16, 0.2) 78%,
    transparent
  );
  /* Softens any content that scrolls up under the nav, keeping it legible. */
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  /* Fade the blur + scrim out smoothly so there is no hard cutoff line. */
  -webkit-mask-image: linear-gradient(to bottom, #000 62%, transparent);
  mask-image: linear-gradient(to bottom, #000 62%, transparent);
  opacity: calc(0.7 + var(--scroll) * 0.3);
}

.wordmark-sm {
  font-family: "Fraunces", serif;
  font-weight: 500;
  font-size: 1.18rem;
  letter-spacing: 0.01em;
  opacity: calc(0.55 + var(--scroll) * 0.45);
}

.nav {
  display: flex;
  gap: clamp(14px, 2.4vw, 34px);
}

.nav a {
  position: relative;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  transition: color 280ms ease;
}

.nav a::after {
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 1px;
  content: "";
  background: var(--amber);
  transition: width 320ms cubic-bezier(0.2, 0.7, 0.1, 1);
}

.nav a:hover {
  color: var(--ink);
}

.nav a:hover::after {
  width: 100%;
}

/* ---------- Mobile nav toggle (hidden on desktop) ---------- */

.nav-toggle {
  display: none;
  position: relative;
  z-index: 7;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 26px;
  height: 12px;
  margin: 0 auto;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  content: "";
  background: currentColor;
  transition: transform 380ms cubic-bezier(0.2, 0.7, 0.1, 1), opacity 200ms ease;
}

.nav-toggle-bars::before {
  top: 0;
  opacity: calc(0.6 + var(--scroll) * 0.4);
}

.nav-toggle-bars::after {
  bottom: 0;
}

.nav-open .nav-toggle-bars::before {
  transform: translateY(5.25px) rotate(45deg);
  opacity: 1;
}

.nav-open .nav-toggle-bars::after {
  transform: translateY(-5.25px) rotate(-45deg);
}

/* ---------- Shared layout ---------- */

main {
  position: relative;
  z-index: 3;
}

section {
  position: relative;
  width: min(100% - 2 * var(--gutter), var(--max));
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 26px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--teal);
}

.eyebrow::before {
  content: "— ";
  color: var(--whisper);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Fraunces", serif;
  font-weight: 400;
  letter-spacing: -0.01em;
  /* Balance short headings so no single word is stranded on its own line. */
  text-wrap: balance;
}

/* Lift headings + copy cleanly off the cosmos */
.statement,
.method-title,
.work-title,
.contact-line,
.movement h3,
.card-field,
.foot-mark {
  text-shadow: 0 2px 30px rgba(5, 6, 16, 0.85), 0 0 10px rgba(5, 6, 16, 0.55), 0 0 60px rgba(5, 6, 16, 0.4);
}

.hero-tag,
.thesis-body p,
.movement-copy,
.work-lede,
.card-copy,
.contact-note {
  text-shadow: 0 1px 20px rgba(5, 6, 16, 0.8), 0 0 6px rgba(5, 6, 16, 0.5);
}

p,
li,
dd {
  /* Avoid orphans/widows: keep the last line from being a lone short word. */
  text-wrap: pretty;
}

p {
  margin: 0;
}

em {
  font-style: italic;
  color: var(--amber);
}

/* ---------- HERO ---------- */

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100svh;
  padding: 22vh 0 12vh;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 clamp(26px, 5vh, 52px);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--faint);
}

.hero-kicker [lang="he"] {
  font-family: "Fraunces", serif;
  font-size: 1.05rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--soft);
}

.hero-kicker .dot {
  color: var(--whisper);
}

.wordmark {
  margin: 0 0 clamp(30px, 5vh, 54px);
  font-weight: 300;
  font-size: clamp(4.6rem, 17vw, 17rem);
  line-height: 0.86;
  letter-spacing: -0.025em;
  cursor: crosshair;
  user-select: none;
}

.wordmark .line {
  display: block;
  overflow: visible;
}

/* The letters are dark until light is brought to them.
   A warm radial bloom tracks the cursor; full ignition floods them. */
.wordmark .ink {
  display: inline-block;
  color: transparent;
  background:
    radial-gradient(
      circle var(--title-radius) at var(--title-x) var(--title-y),
      rgba(255, 251, 240, calc(0.85 + var(--title-ignition) * 0.15)),
      rgba(245, 184, 90, calc(0.55 + var(--title-light) * 0.3)) 30%,
      rgba(139, 123, 255, calc(0.3 + var(--title-light) * 0.3)) 58%,
      rgba(243, 239, 230, calc(0.14 + var(--title-ignition) * 0.5)) 78%
    ),
    linear-gradient(
      rgba(243, 239, 230, calc(0.52 + var(--title-ignition) * 0.48)),
      rgba(243, 239, 230, calc(0.52 + var(--title-ignition) * 0.48))
    );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 calc(var(--title-ignition) * 40px) rgba(245, 184, 90, calc(var(--title-ignition) * 0.35)));
  transition: filter 1400ms cubic-bezier(0.2, 0.8, 0.12, 1);
}

.hero-tag {
  max-width: 30ch;
  margin: 0;
  font-size: clamp(1.06rem, 1.5vw, 1.32rem);
  line-height: 1.62;
  color: var(--soft);
}

.hero-foot {
  margin-top: clamp(40px, 8vh, 90px);
}

.scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--faint);
}

.scroll-line {
  display: block;
  width: 54px;
  height: 1px;
  background: linear-gradient(to right, var(--amber), transparent);
  animation: scroll-pulse 3.4s ease-in-out infinite;
  transform-origin: left;
}

@keyframes scroll-pulse {
  0%,
  100% {
    opacity: 0.35;
    transform: scaleX(0.6);
  }
  50% {
    opacity: 1;
    transform: scaleX(1);
  }
}

/* ---------- THESIS ---------- */

.thesis {
  padding: 18vh 0;
}

.statement {
  max-width: 18ch;
  margin: 0 0 clamp(40px, 7vh, 80px);
  font-size: clamp(2.5rem, 6.2vw, 6rem);
  line-height: 1.02;
  font-weight: 300;
}

.thesis-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(28px, 5vw, 72px);
  max-width: 880px;
  margin-left: auto;
}

.thesis-body p {
  font-size: clamp(1.02rem, 1.4vw, 1.2rem);
  line-height: 1.74;
  color: var(--soft);
}

/* ---------- METHOD ---------- */

.method {
  padding: 14vh 0 18vh;
}

.method-head {
  margin-bottom: clamp(46px, 8vh, 96px);
}

.method-title {
  max-width: 16ch;
  font-size: clamp(2rem, 4.4vw, 4rem);
  line-height: 1.05;
  font-weight: 300;
}

.movements {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 4vw, 56px);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.movement {
  position: relative;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.movement::before {
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 1px;
  content: "";
  background: linear-gradient(to right, var(--amber), transparent);
  transition: width 900ms cubic-bezier(0.2, 0.7, 0.1, 1);
}

.movement.is-visible::before {
  width: 72px;
}

.movement-index {
  display: block;
  margin-bottom: 22px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.movement h3 {
  font-size: clamp(1.7rem, 2.6vw, 2.5rem);
  font-weight: 400;
  line-height: 1;
}

.movement-he {
  margin: 8px 0 22px;
  font-family: "Fraunces", serif;
  font-size: 1.5rem;
  color: var(--whisper);
}

.movement-copy {
  font-size: 1rem;
  line-height: 1.66;
  color: var(--soft);
}

/* ---------- THE CREATION MODEL (six stages) ---------- */

.model {
  padding: 14vh 0 18vh;
}

.model-head {
  max-width: 680px;
  margin-bottom: clamp(40px, 7vh, 80px);
}

.model-title {
  margin-bottom: 22px;
  max-width: 14ch;
  font-size: clamp(2rem, 4.4vw, 4rem);
  line-height: 1.05;
  font-weight: 300;
  text-shadow: 0 1px 24px rgba(5, 6, 16, 0.7);
}

.model-lede {
  font-size: clamp(1rem, 1.3vw, 1.16rem);
  line-height: 1.65;
  color: var(--soft);
  text-shadow: 0 1px 16px rgba(5, 6, 16, 0.65);
}

.stages {
  margin: 0;
  padding: 0;
  list-style: none;
}

.stage {
  position: relative;
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: clamp(18px, 4vw, 48px);
  padding: clamp(26px, 4vh, 44px) 0;
  border-top: 1px solid var(--line);
}

.stage:last-child {
  border-bottom: 1px solid var(--line);
}

/* the accent hairline grows on reveal — light entering, stage by stage */
.stage::before {
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 1px;
  content: "";
  background: linear-gradient(to right, var(--accent, var(--amber)), transparent);
  transition: width 1000ms cubic-bezier(0.2, 0.7, 0.1, 1);
}

.stage.is-visible::before {
  width: 96px;
}

.stage-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--accent, var(--amber));
  padding-top: 0.5em;
}

.stage-body {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.6fr);
  gap: clamp(14px, 3vw, 48px);
  align-items: baseline;
}

.stage-name {
  font-family: "Fraunces", serif;
  font-weight: 400;
  font-size: clamp(1.7rem, 2.8vw, 2.6rem);
  line-height: 1;
  text-shadow: 0 1px 24px rgba(5, 6, 16, 0.7);
}

.stage-essence {
  margin-top: 12px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent, var(--amber));
}

.stage-he {
  margin-top: 8px;
  font-family: "Fraunces", serif;
  font-size: 1.15rem;
  color: var(--whisper);
}

.stage-copy {
  font-size: clamp(1rem, 1.25vw, 1.12rem);
  line-height: 1.6;
  color: var(--soft);
  text-shadow: 0 1px 16px rgba(5, 6, 16, 0.65);
}

@media (max-width: 760px) {
  .stage {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .stage-body {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* ---------- SELECTED WORK ---------- */

.work {
  padding: 12vh 0 18vh;
}

.work-head {
  max-width: 640px;
  margin-bottom: clamp(46px, 7vh, 84px);
}

.work-title {
  margin-bottom: 22px;
  font-size: clamp(2rem, 4.4vw, 4rem);
  line-height: 1.04;
  font-weight: 300;
}

.work-lede {
  font-size: clamp(1rem, 1.3vw, 1.14rem);
  line-height: 1.7;
  color: var(--soft);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 1.8vw, 26px);
}

/* Frosted glass — frozen panes over the cosmos */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 340px;
  padding: 28px 26px 26px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: linear-gradient(155deg, rgba(243, 239, 230, 0.07), rgba(243, 239, 230, 0.015));
  box-shadow:
    0 40px 90px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  -webkit-backdrop-filter: blur(26px) saturate(1.2);
  backdrop-filter: blur(26px) saturate(1.2);
  transition: transform 600ms cubic-bezier(0.2, 0.7, 0.1, 1), border-color 600ms ease, box-shadow 600ms ease;
}

.card::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: radial-gradient(circle 200px at 50% 0%, rgba(139, 123, 255, 0.16), transparent 70%);
  opacity: 0.6;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 184, 90, 0.36);
  box-shadow:
    0 56px 120px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: auto;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.card-no {
  color: var(--amber);
}

.card-status {
  color: var(--faint);
}

.card-field {
  margin: 56px 0 14px;
  font-size: clamp(1.5rem, 2vw, 1.9rem);
  font-weight: 400;
  line-height: 1.05;
}

.card-copy {
  margin-bottom: 30px; /* reserve clearance for the absolute "Sealed" tag */
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--soft);
}

.card-seal {
  position: absolute;
  right: 22px;
  bottom: 22px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.64rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--whisper);
}

/* ---------- CONTACT ---------- */

.contact {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 16vh 0 18vh;
}

.contact .eyebrow::before {
  content: "";
}

.contact-line {
  max-width: 20ch;
  margin: 0 0 clamp(20px, 3.5vh, 32px);
  font-size: clamp(2rem, 5vw, 4.4rem);
  line-height: 1.06;
  font-weight: 300;
}

.contact-note {
  max-width: 38ch;
  margin: 0 0 clamp(34px, 6vh, 58px);
  font-size: clamp(1rem, 1.3vw, 1.16rem);
  line-height: 1.6;
  color: var(--soft);
}

.contact-email {
  position: relative;
  font-family: "Fraunces", serif;
  font-size: clamp(1.4rem, 3.2vw, 2.4rem);
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  transition: color 300ms ease;
}

.contact-email::after {
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  content: "";
  background: var(--line-strong);
  transform: scaleX(0.4);
  transform-origin: center;
  transition: transform 420ms cubic-bezier(0.2, 0.7, 0.1, 1), background 420ms ease;
}

.contact-email:hover {
  color: #fff;
}

.contact-email:hover::after {
  background: var(--amber);
  transform: scaleX(1);
}

/* ---------- FOOTER ---------- */

.site-footer {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  width: min(100% - 2 * var(--gutter), var(--max));
  margin: 0 auto;
  padding: 34px 0 44px;
  border-top: 1px solid var(--line);
}

.foot-mark {
  font-family: "Fraunces", serif;
  font-size: 1.05rem;
}

.foot-meta {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
}

/* ---------- Reveal ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 1100ms cubic-bezier(0.2, 0.7, 0.1, 1), transform 1200ms cubic-bezier(0.2, 0.7, 0.1, 1);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger cards / movements within a group */
.movement:nth-child(2),
.card:nth-child(2) {
  transition-delay: 120ms;
}
.movement:nth-child(3),
.card:nth-child(3) {
  transition-delay: 240ms;
}

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

@media (max-width: 880px) {
  .thesis-body {
    grid-template-columns: 1fr;
  }

  .movements {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .movement {
    padding: 30px 0;
    border-top: 1px solid var(--line);
  }
  .movement:last-child {
    border-bottom: 1px solid var(--line);
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: 260px;
  }

  .movement:nth-child(2),
  .movement:nth-child(3),
  .card:nth-child(2),
  .card:nth-child(3) {
    transition-delay: 0ms;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-top: 26vh;
  }

  .wordmark {
    font-size: clamp(4rem, 24vw, 7rem);
  }

  .hero-tag {
    max-width: none;
  }
}

/* ---------- Mobile navigation drawer ---------- */

.nav-meta {
  display: none;
}

body.nav-open {
  overflow: hidden;
}

@media (max-width: 820px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    inset: 0;
    z-index: 4;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: clamp(16px, 3vh, 30px);
    padding: 16vh var(--gutter) 18vh;
    background:
      radial-gradient(ellipse at 52% 4%, rgba(26, 17, 69, 0.55), transparent 58%),
      rgba(5, 6, 16, 0.95);
    -webkit-backdrop-filter: blur(22px) saturate(118%);
    backdrop-filter: blur(22px) saturate(118%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 440ms ease, transform 560ms cubic-bezier(0.2, 0.7, 0.1, 1),
      visibility 0s linear 440ms;
  }

  body.nav-open .nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition: opacity 420ms ease, transform 620ms cubic-bezier(0.2, 0.7, 0.1, 1);
  }

  .nav a {
    font-family: "Fraunces", serif;
    font-weight: 300;
    font-size: clamp(1.85rem, 8vw, 2.7rem);
    line-height: 1;
    letter-spacing: 0.004em;
    text-transform: none;
    color: var(--soft);
    opacity: 0;
    transform: translateY(14px);
    transition: color 280ms ease, opacity 520ms ease,
      transform 600ms cubic-bezier(0.2, 0.7, 0.1, 1);
  }

  body.nav-open .nav a {
    opacity: 1;
    transform: none;
  }

  body.nav-open .nav a:nth-child(1) { transition-delay: 80ms; }
  body.nav-open .nav a:nth-child(2) { transition-delay: 130ms; }
  body.nav-open .nav a:nth-child(3) { transition-delay: 180ms; }
  body.nav-open .nav a:nth-child(4) { transition-delay: 230ms; }
  body.nav-open .nav a:nth-child(5) { transition-delay: 280ms; }
  body.nav-open .nav a:nth-child(6) { transition-delay: 330ms; }
  body.nav-open .nav a:nth-child(7) { transition-delay: 380ms; }

  .nav a::after {
    display: none;
  }

  .nav a:hover,
  .nav a[aria-current="page"] {
    color: var(--ink);
  }

  .nav a[aria-current="page"]::before {
    display: inline-block;
    width: 24px;
    height: 1px;
    margin-right: 16px;
    vertical-align: middle;
    content: "";
    background: var(--amber);
  }

  .nav-meta {
    position: absolute;
    left: var(--gutter);
    bottom: 8.5vh;
    display: block;
    margin: 0;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.64rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--whisper);
    opacity: 0;
    transition: opacity 500ms ease 240ms;
  }

  body.nav-open .nav-meta {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   ARTIFACT PLATE — shared component
   An artifact shown as a raw primary document: accession header,
   specimen blocks (abstract, figure, data, field note, references),
   provenance/seal footer. Sealed specifics are shown in SHAPE only,
   behind redaction bars. Used by every artifact-*.html page.
   ============================================================ */

.plate {
  width: min(100% - 2 * var(--gutter), 900px);
  margin-inline: auto;
}
.plate-hero {
  padding-top: clamp(132px, 21vh, 240px);
  padding-bottom: clamp(34px, 6vh, 64px);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(34px, 6vh, 60px);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
  transition: color 240ms ease;
}
.back-link:hover { color: var(--ink); }
.back-link .arr { transition: transform 300ms cubic-bezier(0.2, 0.7, 0.1, 1); }
.back-link:hover .arr { transform: translateX(-4px); }

/* Accession header — the catalogue line. */
.accession {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.accession .no { color: var(--soft); }
.accession .type { color: var(--amber); }
.accession .stage { color: var(--faint); }
.accession .year { color: var(--faint); }
.accession .sep { color: var(--whisper); }
.accession .status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  color: var(--soft);
}

/* Disclosure dot — open / partial / sealed. Shared across plates + index. */
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  flex: none;
}
.dot--open {
  background: var(--teal);
  box-shadow: 0 0 9px rgba(95, 227, 208, 0.6);
}
.dot--partial {
  background: linear-gradient(90deg, var(--teal) 50%, transparent 50%);
  box-shadow: 0 0 9px rgba(95, 227, 208, 0.45);
}
.dot--sealed {
  background: transparent;
  border-color: var(--whisper);
}

.plate-title {
  max-width: 18ch;
  margin: 0 0 18px;
  font-family: "Fraunces", serif;
  font-weight: 300;
  font-size: clamp(2.1rem, 5.4vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.012em;
}
.plate-caption {
  max-width: 56ch;
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  line-height: 1.66;
  color: var(--soft);
}

/* ---- Specimen blocks ---- */
.specimen { padding-bottom: 16vh; }
.block {
  padding: clamp(30px, 5vh, 56px) 0;
  border-top: 1px solid var(--line);
}
.block-label {
  margin: 0 0 20px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
}

/* Abstract — a raw serif excerpt, not marketing copy. */
.abstract {
  max-width: 64ch;
  margin: 0;
  font-family: "Fraunces", serif;
  font-weight: 300;
  font-size: clamp(1.18rem, 2vw, 1.6rem);
  line-height: 1.5;
  color: var(--ink);
}

.prose-mono {
  max-width: 66ch;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--soft);
  white-space: pre-wrap;
}

/* The plate panel holding a figure or table — a document on the bench. */
.panel {
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.014);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.fig-cap,
.tab-cap {
  margin: 18px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--faint);
}
.fig-cap b,
.tab-cap b { color: var(--soft); font-weight: 500; }

figure { margin: 0; }
.chart { display: block; width: 100%; height: auto; }

/* ---- Data table with sealed cells ---- */
table.data {
  width: 100%;
  border-collapse: collapse;
  font-family: "IBM Plex Mono", monospace;
}
table.data th,
table.data td {
  padding: 13px 14px;
  text-align: left;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--line);
}
table.data thead th {
  font-weight: 500;
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
}
table.data td { color: var(--soft); }
table.data td.num { color: var(--ink); }
table.data tr:last-child td { border-bottom: none; }

/* Redaction bar — shows the SHAPE of sealed data without the value. */
.sealed {
  position: relative;
  display: inline-block;
  min-width: 54px;
  padding: 2px 8px;
  color: transparent;
  user-select: none;
  border-radius: 2px;
  background: repeating-linear-gradient(
    45deg,
    rgba(245, 184, 90, 0.16),
    rgba(245, 184, 90, 0.16) 6px,
    rgba(245, 184, 90, 0.07) 6px,
    rgba(245, 184, 90, 0.07) 12px
  );
  border: 1px solid rgba(245, 184, 90, 0.22);
}
.sealed::after {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.54rem;
  letter-spacing: 0.18em;
  color: rgba(245, 184, 90, 0.72);
  content: "SEALED";
}

/* Field note — a dated working record, with struck/sealed lines. */
.fieldnote .strike {
  color: var(--whisper);
  text-decoration: line-through;
  text-decoration-color: var(--whisper);
}
.redline {
  display: inline-block;
  width: clamp(120px, 26vw, 280px);
  height: 0.78em;
  vertical-align: -0.12em;
  border-radius: 2px;
  background: repeating-linear-gradient(
    45deg,
    rgba(243, 239, 230, 0.1),
    rgba(243, 239, 230, 0.1) 6px,
    rgba(243, 239, 230, 0.04) 6px,
    rgba(243, 239, 230, 0.04) 12px
  );
}

/* References — numbered, institutional, some sealed. */
.refs {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: ref;
  display: grid;
  gap: 12px;
  max-width: 70ch;
}
.refs li {
  position: relative;
  padding-left: 38px;
  font-size: 0.92rem;
  line-height: 1.56;
  color: var(--soft);
}
.refs li::before {
  counter-increment: ref;
  content: "[" counter(ref) "]";
  position: absolute;
  left: 0;
  top: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.74rem;
  color: var(--amber);
}
.refs .muted { color: var(--whisper); }

/* Provenance / seal footer. */
.provenance {
  margin-top: clamp(8px, 1.4vh, 16px);
  padding: clamp(22px, 3.2vw, 34px);
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(5, 6, 16, 0.4);
}
.provenance .prov-line {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 6px 20px;
  padding: 9px 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.74rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
}
.provenance .prov-line:last-child { border-bottom: none; }
.provenance .k {
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}
.provenance .v { color: var(--soft); }

@media (max-width: 620px) {
  .accession .status { margin-left: 0; width: 100%; }
  .provenance .prov-line { grid-template-columns: 1fr; gap: 2px; }
  table.data th,
  table.data td { padding: 11px 8px; font-size: 0.72rem; }
}

/* ---- Artifacts index, as an archive ---- */
.artifacts-grid .card { text-decoration: none; }
.card-acc {
  display: block;
  margin-bottom: 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--whisper);
}
.card-disclosure {
  position: absolute;
  right: 22px;
  bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faint);
}
.card-open-arr {
  margin-left: 4px;
  color: var(--amber);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 300ms ease, transform 300ms cubic-bezier(0.2, 0.7, 0.1, 1);
}
.artifacts-grid .card:hover .card-open-arr {
  opacity: 1;
  transform: none;
}