/* === Custom Properties === */
:root {
  --paper: #F2EDE4;
  --onionskin: #E8E0D2;
  --pen: #2C2C38;
  --graphite: #6B6878;
  --ink-blue: #4A6670;
  --umber: #8B7355;
  --copper: #5D7A6E;
  --highlight: #C4956A;
  --reveal-ease: cubic-bezier(0.25, 0.1, 0.25, 1.0);
  --spread-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* === Reset === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--paper);
}

body {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-weight: 400;
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.72;
  color: var(--pen);
}

/* === Typography === */
.site-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: 0.15em;
  color: var(--pen);
  margin-bottom: 2rem;
}

.chamber-heading {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  letter-spacing: 0.04em;
  color: var(--pen);
  margin-bottom: 1.5rem;
}

.body-text {
  margin-bottom: 1rem;
  max-width: 36rem;
}

.body-text:last-child { margin-bottom: 0; }

.machine-text, .machine-voice {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 400;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  line-height: 1.65;
  color: var(--copper);
  margin-bottom: 1rem;
}

.machine-voice {
  font-size: clamp(0.9rem, 1.1vw, 1rem);
  max-width: 36rem;
}

.small-text {
  font-size: 0.9rem;
  line-height: 1.6;
}

.opening-question {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  color: var(--graphite);
}

/* === Codex Container === */
.codex {
  display: flex;
  flex-direction: row;
  height: 100vh;
  width: 800vw;
  overflow: hidden;
}

/* === Chamber === */
.chamber {
  min-width: 100vw;
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: clamp(2rem, 5vw, 6rem);
  overflow: hidden;
}

.chamber-content {
  position: relative;
  z-index: 2;
  max-width: 48rem;
}

.above-line {
  margin-bottom: 4rem;
}

.below-line {
  margin-top: 2rem;
}

/* === Examination Line === */
.exam-line {
  position: absolute;
  top: 62%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--graphite);
  opacity: 0.3;
  z-index: 1;
}

.exam-line-digital {
  background: var(--copper);
  opacity: 0.5;
}

.exam-line-center {
  top: 50%;
}

.exam-line-fracture {
  background: repeating-linear-gradient(90deg, var(--graphite) 0px, var(--graphite) 8px, transparent 8px, transparent 16px);
  height: 3px;
  opacity: 0.2;
}

/* === Chamber Number Watermark === */
.chamber-number {
  position: absolute;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 8rem;
  color: var(--pen);
  opacity: 0.04;
  transform: rotate(-5deg);
  top: 10%;
  right: 10%;
  z-index: 0;
  pointer-events: none;
}

/* === Circuit Traces === */
.circuit-traces {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, transparent 98%, rgba(93,122,110,0.1) 98%),
    linear-gradient(0deg, transparent 96%, rgba(93,122,110,0.08) 96%);
  background-size: 80px 80px;
  opacity: 0.15;
}

.circuit-visible { opacity: 0.25; }
.circuit-prominent { opacity: 0.4; }
.circuit-erratic {
  opacity: 0.3;
  animation: circuitPulse 3s ease-in-out infinite;
}

@keyframes circuitPulse {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.4; }
}

/* === Watercolor Washes === */
.watercolor-wash {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  filter: url(#watercolor);
  opacity: 0;
  transition: opacity 1200ms var(--spread-ease);
}

.chamber.in-view .watercolor-wash {
  opacity: 1;
}

.wash-blue {
  background: radial-gradient(ellipse at 30% 40%, rgba(74,102,112,0.12), transparent 60%);
}

.wash-umber {
  background: radial-gradient(ellipse at 60% 50%, rgba(139,115,85,0.15), transparent 60%);
}

.wash-cool {
  background: radial-gradient(ellipse at 40% 45%, rgba(93,122,110,0.12), transparent 55%);
}

.wash-mixed {
  background:
    radial-gradient(ellipse at 25% 35%, rgba(74,102,112,0.1), transparent 50%),
    radial-gradient(ellipse at 70% 65%, rgba(139,115,85,0.1), transparent 50%);
}

.wash-full {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(74,102,112,0.2), transparent 40%),
    radial-gradient(ellipse at 70% 60%, rgba(139,115,85,0.2), transparent 40%),
    radial-gradient(ellipse at 50% 50%, rgba(93,122,110,0.1), transparent 60%);
}

/* === Ink Splatters === */
.ink-splatters {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.splat {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-blue);
  opacity: 0.3;
}

/* === Split Chamber (V) === */
.chamber-split {
  flex-direction: row;
  align-items: stretch;
  padding: 0;
}

.split-left, .split-right {
  flex: 1;
  display: flex;
  align-items: center;
  padding: clamp(2rem, 4vw, 5rem);
}

.split-left {
  border-right: 1px solid rgba(107,104,120,0.2);
}

.comparison-question {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  background: var(--paper);
  padding: 1rem 2rem;
}

/* === Dissolution (VII) === */
.dissolution-content {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  justify-content: center;
}

.dissolve-word {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: var(--graphite);
  opacity: 0;
  transition: opacity 2000ms ease;
}

.chamber.in-view .dissolve-word {
  animation: dissolveLoop 6s ease-in-out infinite;
}

@keyframes dissolveLoop {
  0%, 100% { opacity: 0.1; }
  50% { opacity: 0.6; }
}

.dissolve-word:nth-child(2) { animation-delay: 1.5s; }
.dissolve-word:nth-child(3) { animation-delay: 3s; }
.dissolve-word:nth-child(4) { animation-delay: 4.5s; }

/* === Verdict (VIII) === */
.verdict-content {
  text-align: center;
}

.verdict-primary {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  color: var(--pen);
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 800ms var(--reveal-ease), transform 800ms var(--reveal-ease);
}

.verdict-secondary {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  color: var(--graphite);
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 800ms var(--reveal-ease) 600ms, transform 800ms var(--reveal-ease) 600ms;
}

.verdict-result {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.875rem;
  color: var(--copper);
  opacity: 0;
  transition: opacity 800ms ease 1200ms;
}

.chamber.in-view .verdict-primary,
.chamber.in-view .verdict-secondary {
  opacity: 1;
  transform: translateY(0);
}

.chamber.in-view .verdict-result {
  opacity: 0.4;
}

/* === Fade Reveal === */
.chamber .body-text,
.chamber .machine-text,
.chamber .machine-voice,
.chamber .chamber-heading {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 600ms var(--reveal-ease), transform 600ms var(--reveal-ease);
}

.chamber.in-view .chamber-heading {
  opacity: 1; transform: translateY(0);
  transition-delay: 200ms;
}

.chamber.in-view .body-text:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 400ms; }
.chamber.in-view .body-text:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 600ms; }
.chamber.in-view .machine-text { opacity: 1; transform: translateY(0); transition-delay: 800ms; }
.chamber.in-view .machine-voice:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 400ms; }
.chamber.in-view .machine-voice:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 600ms; }

/* === Progress Dots === */
.progress-dots {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--graphite);
  background: transparent;
  transition: background 300ms ease;
}

.dot.active {
  background: var(--ink-blue);
  border-color: var(--ink-blue);
}

/* === Glyph === */
.glyph {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 100;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--copper);
  opacity: 0.5;
}

/* === Responsive === */
@media (max-width: 768px) {
  .chamber-split {
    flex-direction: column;
  }

  .split-left {
    border-right: none;
    border-bottom: 1px solid rgba(107,104,120,0.2);
  }

  .comparison-question {
    position: relative;
    top: auto; left: auto;
    transform: none;
    padding: 2rem;
    text-align: center;
  }
}