/* ═══════════════════════════════════════════════════════════
   LUMEN — descent into VELA
   obsidian → violet → amber → radiant gold
   ═══════════════════════════════════════════════════════════ */

@font-face {
  font-family: 'Cormorant Garamond';
  src: url('../fonts/cormorant-garamond.woff2') format('woff2');
  font-weight: 300 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Cormorant Garamond';
  src: url('../fonts/cormorant-garamond-italic.woff2') format('woff2');
  font-weight: 300;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/plex-mono-300.woff2') format('woff2');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/plex-mono-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --obsidian: #060504;
  --violet:   #241426;
  --amber:    #C1873B;
  --gold:     #E3B04B;
  --radiant:  #FFF4D9;
  --bone:     #EFE9DC;
  --bone-dim: rgba(239, 233, 220, .58);
  --hairline: rgba(227, 176, 75, .38);
  --serif: 'Cormorant Garamond', 'Didot', Georgia, serif;
  --mono:  'Plex Mono', 'SF Mono', Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scrollbar-width: none; }
html::-webkit-scrollbar { display: none; }

body {
  background: var(--obsidian);
  color: var(--bone);
  font-family: var(--serif);
  font-weight: 300;
  overflow-x: hidden;
  cursor: crosshair;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(227, 176, 75, .28); color: var(--radiant); }

a { color: inherit; }

/* ── film canvas ─────────────────────────────────────────── */
#film {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
}

/* depth colour-grade — driven by JS custom properties */
.grade {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 110%, var(--grade-warm, rgba(193,135,59,0)) 0%, transparent 60%),
    linear-gradient(to bottom, var(--grade-top, rgba(6,5,4,.25)), transparent 40%, var(--grade-bottom, rgba(6,5,4,.3)));
  transition: none;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(130% 100% at 50% 50%, transparent 55%, rgba(4,3,2,.55) 100%);
}

#trail {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  mix-blend-mode: screen;
}

/* ── HUD ─────────────────────────────────────────────────── */
.hud { position: fixed; z-index: 20; pointer-events: none; }

.hud-top {
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 2.2rem 3rem;
}

.wordmark {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: .55em;
  margin-right: -.55em;
  color: var(--bone);
}

.vela-status {
  font-family: var(--mono);
  font-weight: 300;
  font-size: .6rem;
  letter-spacing: .32em;
  color: var(--bone-dim);
  display: flex;
  align-items: center;
  gap: .7em;
}

.pulse {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px 1px rgba(227,176,75,.8);
  animation: pulse 3.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: .35; transform: scale(.8); }
  50%       { opacity: 1;   transform: scale(1); }
}

/* neural depth meter — right edge */
.depth-meter {
  top: 50%;
  right: 2.6rem;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1.1rem;
  font-family: var(--mono);
  text-align: right;
}

.dm-label {
  font-size: .52rem;
  font-weight: 300;
  letter-spacing: .42em;
  margin-right: -.42em;
  color: var(--bone-dim);
  writing-mode: vertical-rl;
}

.dm-rail {
  position: relative;
  height: 34vh;
  width: 1px;
  background: var(--hairline);
}

.dm-ticks { position: absolute; inset: 0; }
.dm-tick {
  position: absolute;
  right: 0;
  width: 7px;
  height: 1px;
  background: rgba(227,176,75,.3);
}
.dm-tick.major { width: 13px; background: rgba(227,176,75,.55); }

.dm-thumb {
  position: absolute;
  right: -2.5px;
  top: 0;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px 2px rgba(227,176,75,.7);
}

.dm-readout { display: flex; flex-direction: column; gap: .35rem; }

.dm-layer {
  font-size: .95rem;
  font-weight: 300;
  letter-spacing: .12em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.dm-zone {
  font-size: .52rem;
  font-weight: 300;
  letter-spacing: .34em;
  margin-right: -.34em;
  color: var(--bone-dim);
  min-height: 1em;
}

/* zone index — bottom left */
.zone-index {
  left: 3rem;
  bottom: 2.6rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--mono);
  font-weight: 300;
  font-size: .6rem;
  letter-spacing: .34em;
  color: var(--bone-dim);
}
.zi-rule { width: 3.2rem; height: 1px; background: var(--hairline); }

/* scroll hint — bottom centre */
.scroll-hint {
  left: 50%;
  bottom: 2.4rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .9rem;
  font-family: var(--mono);
  font-weight: 300;
  font-size: .55rem;
  letter-spacing: .42em;
  margin-left: .21em;
  color: var(--bone-dim);
}
.hint-line {
  width: 1px; height: 3rem;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: hint 2.6s ease-in-out infinite;
  transform-origin: top;
}
@keyframes hint {
  0%   { transform: scaleY(0); opacity: 0; }
  35%  { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1); opacity: 0; }
}

/* ── panels ──────────────────────────────────────────────── */
#passage { position: relative; z-index: 15; }

.panel {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 clamp(2rem, 8vw, 9rem);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.panel.live { visibility: visible; }

/* legibility scrim — sits behind the text, over the film */
.panel::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(85% 75% at 32% 50%, rgba(6, 5, 4, .62), transparent 72%);
}
.panel-right::before { background: radial-gradient(85% 75% at 68% 50%, rgba(6, 5, 4, .62), transparent 72%); }
.panel-hero::before,
.panel-residency::before { background: radial-gradient(70% 80% at 50% 50%, rgba(6, 5, 4, .55), transparent 74%); }
.panel-cta::after,
.panel-residency::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(70% 80% at 50% 55%, rgba(255, 244, 217, .34), transparent 75%);
  opacity: 0;
  transition: opacity 1.2s ease;
}
.panel-cta::before,
.panel-residency::before { transition: opacity 1.2s ease; }
body.radiant .panel-cta::after,
body.radiant .panel-residency::after { opacity: 1; }
body.radiant .panel-cta::before,
body.radiant .panel-residency::before { opacity: 0; }

/* residency copy inks over the radiant core */
.panel-residency h2,
.panel-residency h2 em,
.panel-residency .fact,
.panel-residency .eyebrow,
.panel-residency .cohort { transition: color 1.2s ease; }
.panel-residency .eyebrow::after { transition: background 1.2s ease; }
body.radiant .panel-residency h2 { color: #2A1B08; text-shadow: none; }
body.radiant .panel-residency h2 em { color: #7A5210; }
body.radiant .panel-residency .fact { color: rgba(42, 27, 8, .78); text-shadow: none; }
body.radiant .panel-residency .eyebrow,
body.radiant .panel-residency .cohort { color: rgba(38, 24, 8, .75); }
body.radiant .panel-residency .eyebrow::after { background: rgba(38, 24, 8, .4); }
.panel.live .cta, .panel.live a { pointer-events: auto; }

.eyebrow {
  font-family: var(--mono);
  font-weight: 300;
  font-size: .58rem;
  letter-spacing: .46em;
  color: var(--gold);
  margin-bottom: 2.4rem;
}
.eyebrow::after {
  content: '';
  display: block;
  width: 4.2rem;
  height: 1px;
  background: var(--hairline);
  margin-top: 1.3rem;
}

h1, h2 {
  font-family: var(--serif);
  font-weight: 300;
  letter-spacing: .04em;
  line-height: 1.06;
  text-wrap: balance;
  text-shadow: 0 2px 30px rgba(4, 3, 2, .65);
}
.lede, .fact, .spec-val { text-shadow: 0 1px 18px rgba(4, 3, 2, .75); }
.panel-cta h2, .panel-cta .lede { text-shadow: none; }
h1 { font-size: clamp(3rem, 8.5vw, 7.5rem); }
h2 { font-size: clamp(2.4rem, 6vw, 5.2rem); }
h1 em, h2 em { font-style: italic; color: var(--gold); }

.lede, .fact {
  margin-top: 2.6rem;
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
  line-height: 1.75;
  letter-spacing: .03em;
  color: var(--bone-dim);
  max-width: 34em;
}

/* hero centred */
.panel-hero { align-items: center; text-align: center; }
.panel-hero .lede { margin-left: auto; margin-right: auto; }
.panel-hero .eyebrow::after { margin-left: auto; margin-right: auto; }

/* zone facts alternate sides */
.panel-left  { align-items: flex-start; text-align: left; }
.panel-right { align-items: flex-end;  text-align: right; }
.panel-right .eyebrow::after { margin-left: auto; }

/* interface specs */
.panel-interface { align-items: flex-start; }
.panel-interface h2 { letter-spacing: .18em; text-transform: uppercase; font-size: clamp(2rem, 4.6vw, 3.8rem); }

.specs {
  list-style: none;
  margin-top: 3.4rem;
  width: min(46rem, 88vw);
}
.specs li {
  display: grid;
  grid-template-columns: minmax(11rem, 16rem) 1fr;
  gap: 2.5rem;
  padding: 1.6rem 0;
  border-top: 1px solid var(--hairline);
}
.specs li:last-child { border-bottom: 1px solid var(--hairline); }

.spec-key {
  font-family: var(--mono);
  font-weight: 400;
  font-size: .6rem;
  letter-spacing: .28em;
  color: var(--gold);
  padding-top: .35em;
}
.spec-val {
  font-size: 1.02rem;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--bone-dim);
}

/* residency + cta centred */
.panel-residency, .panel-cta { align-items: center; text-align: center; }
.panel-residency .eyebrow::after,
.panel-cta .eyebrow::after { margin-left: auto; margin-right: auto; }
.panel-residency .fact { margin-left: auto; margin-right: auto; }

.cohort {
  margin-top: 3rem;
  font-family: var(--mono);
  font-weight: 400;
  font-size: .66rem;
  letter-spacing: .44em;
  margin-left: .22em;
  color: var(--gold);
}

/* deepest layer: adapts with the film — light over the void,
   dark ink when the core turns radiant (body.deep) */
.panel-cta .eyebrow,
.panel-cta .cta,
.panel-cta .cta-note,
.panel-cta .colophon { transition: color 1.2s ease, border-color 1.2s ease; }
.panel-cta .eyebrow::after { transition: background 1.2s ease; }

.cta {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  letter-spacing: .1em;
  color: var(--bone);
  text-decoration: none;
  border: 1px solid var(--hairline);
  border-radius: 100vmax;
  padding: 1.1em 2.6em;
  transition: background .5s ease, box-shadow .5s ease, color .5s ease, border-color 1.2s ease;
}
.cta:hover, .cta:focus-visible {
  background: rgba(227, 176, 75, .92);
  color: #2A1B08;
  box-shadow: 0 0 60px 10px rgba(227, 176, 75, .45);
  outline: none;
}
.cta:focus-visible { box-shadow: 0 0 0 3px rgba(227,176,75,.6), 0 0 60px 10px rgba(227,176,75,.45); }

body.radiant .panel-cta .eyebrow { color: rgba(38, 24, 8, .75); }
body.radiant .panel-cta .eyebrow::after { background: rgba(38, 24, 8, .4); }
body.radiant .cta { color: #2A1B08; border-color: rgba(42, 27, 8, .55); }
body.radiant .cta:hover, body.radiant .cta:focus-visible {
  background: rgba(42, 27, 8, .92);
  color: var(--radiant);
  box-shadow: 0 0 60px 10px rgba(255, 244, 217, .55);
}

.cta-note {
  margin-top: 2.6rem;
  font-family: var(--mono);
  font-weight: 300;
  font-size: .6rem;
  letter-spacing: .3em;
  color: var(--bone-dim);
}
body.radiant .cta-note { color: rgba(38, 24, 8, .6); }

.colophon {
  position: absolute;
  bottom: 2.6rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-weight: 300;
  font-size: .55rem;
  letter-spacing: .5em;
  margin-left: .25em;
  color: var(--bone-dim);
  white-space: nowrap;
}
body.radiant .colophon { color: rgba(38, 24, 8, .55); }

/* ── scroll length ───────────────────────────────────────── */
.scroll-space { position: relative; width: 100%; height: 1200vh; }

/* ── preloader ───────────────────────────────────────────── */
.loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--obsidian);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.2rem;
  transition: opacity 1.4s ease, visibility 1.4s;
}
.loader.done { opacity: 0; visibility: hidden; }

.loader-ring {
  width: 74px; height: 74px;
  border-radius: 50%;
  border: 1px solid rgba(227,176,75,.25);
  box-shadow: inset 0 0 18px rgba(227,176,75,.22);
  animation: breathe 3s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { transform: scale(.94); box-shadow: inset 0 0 12px rgba(227,176,75,.15); }
  50%      { transform: scale(1);   box-shadow: inset 0 0 26px rgba(227,176,75,.4); }
}

.loader-word {
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: .65em;
  margin-right: -.65em;
  color: var(--bone);
}

.loader-status {
  font-family: var(--mono);
  font-weight: 300;
  font-size: .55rem;
  letter-spacing: .34em;
  color: var(--bone-dim);
  font-variant-numeric: tabular-nums;
}

/* ── deep state: HUD flips dark over the radiant core ────── */
.wordmark, .vela-status, .dm-layer, .dm-zone, .dm-label, .zone-index { transition: color 1.2s ease; }
.dm-rail, .zi-rule { transition: background 1.2s ease; }
body.deep .wordmark,
body.deep .zone-index { color: rgba(42, 27, 8, .8); }
body.deep .vela-status,
body.deep .dm-zone,
body.deep .dm-label { color: rgba(42, 27, 8, .6); }
body.deep .dm-layer { color: rgba(42, 27, 8, .9); }
body.deep .dm-rail, body.deep .zi-rule { background: rgba(42, 27, 8, .4); }
body.deep .dm-thumb { background: #2A1B08; box-shadow: 0 0 10px 2px rgba(42,27,8,.4); }
body.deep .dm-tick { background: rgba(42, 27, 8, .3); }
body.deep .dm-tick.major { background: rgba(42, 27, 8, .5); }
.dm-tick { transition: background 1.2s ease; }
body.deep .pulse { background: #2A1B08; box-shadow: 0 0 8px 1px rgba(42,27,8,.5); }

/* ── responsive ──────────────────────────────────────────── */
@media (max-width: 760px) {
  .hud-top { padding: 1.5rem 1.4rem; }
  .zone-index { left: 1.4rem; bottom: 1.6rem; }
  /* meter collapses to a compact top-right readout */
  .depth-meter { top: 4.4rem; right: 1.4rem; transform: none; gap: 0; }
  .dm-rail, .dm-label { display: none; }
  .dm-layer { font-size: .8rem; }
  .dm-zone { font-size: .48rem; }
  .panel { padding: 0 1.6rem; }
  .panel-right { align-items: flex-start; text-align: left; }
  .panel-right .eyebrow::after { margin-left: 0; }
  .specs li { grid-template-columns: 1fr; gap: .8rem; }
  .scroll-hint { display: none; }
  .colophon { letter-spacing: .3em; font-size: .5rem; }
}

/* ── reduced motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .hint-line, .pulse, .loader-ring { animation: none; }
  #trail { display: none; }
}