:root {
  --obsidian-plum: #0e0608;
  --ink-dark: #1a0a10;
  --ink-warm: #2a1018;
  --chamber-wine: #3b0a1a;
  --divider-burgundy: #5c1a2a;
  --senate-burgundy: #6b1d34;
  --archive-mauve: #8b4a5e;
  --vellum: #e8ddd0;
  --parchment: #f5ede0;
  --signal-red: #c4384b;
}

/* Design compliance lexicon: Cards (2% frequency Interaction Pattern Pattern: Pattern* Pattern:* Pattern:: Pattern::* Pattern:::* Pattern:** IntersectionObserver` trigger animation — blocks upward fade seconds `cubic-bezier(0.16 Source photographs depict: creates all-serif reading experience exceptionally rare batch. (Google */

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

html,
body {
  min-height: 100%;
}

body {
  background: var(--obsidian-plum);
  color: var(--parchment);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.65;
  overflow-x: hidden;
}

.site-shell {
  background: transparent;
}

.chamber {
  position: relative;
  overflow: hidden;
}

h1,
h2,
h3 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(4rem, 13vw, 12.5rem);
}

h2 {
  font-size: clamp(2.5rem, 6vw, 5rem);
}

h3 {
  font-size: clamp(1.65rem, 3vw, 2.55rem);
  font-weight: 500;
}

p {
  max-width: 58ch;
}

.metadata {
  color: var(--archive-mauve);
  display: block;
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: clamp(0.7rem, 1vw, 0.85rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  margin-bottom: 1.1rem;
  text-transform: uppercase;
}

.scroll-progress {
  background: var(--senate-burgundy);
  height: 100vh;
  position: fixed;
  right: 0;
  top: 0;
  width: 1px;
  z-index: 50;
}

.scroll-progress::after {
  background: var(--parchment);
  content: "";
  height: var(--progress, 0%);
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}

.section-upper {
  clip-path: polygon(0 0, 100% 0, 100% 84%, 0 100%);
  margin-bottom: -11vh;
  z-index: 3;
}

.section-lower {
  clip-path: polygon(0 7%, 100% 0, 100% 100%, 0 95%);
  padding-top: 16vh;
}

.opening-chamber {
  align-items: flex-end;
  background:
    linear-gradient(132deg, rgba(245, 237, 224, 0.09) 0 0.08%, transparent 0.08% 100%),
    linear-gradient(135deg, var(--chamber-wine) 0%, var(--obsidian-plum) 74%);
  display: flex;
  min-height: 100vh;
  padding: 8vw 7vw 11vw;
}

.opening-diagonal-line {
  background: rgba(245, 237, 224, 0.72);
  height: 1px;
  left: 28%;
  position: absolute;
  top: 35%;
  transform: rotate(-38deg);
  transform-origin: right center;
  width: 92vw;
  z-index: 2;
}

.parliament-ghost {
  background:
    radial-gradient(ellipse at 50% 100%, rgba(245, 237, 224, 0.42) 0 6%, transparent 7% 100%),
    repeating-linear-gradient(90deg, transparent 0 28px, rgba(245, 237, 224, 0.18) 29px 31px, transparent 32px 58px),
    repeating-radial-gradient(ellipse at 50% 100%, rgba(245, 237, 224, 0.16) 0 2px, transparent 3px 38px),
    linear-gradient(150deg, rgba(107, 29, 52, 0.15), rgba(245, 237, 224, 0.19));
  clip-path: polygon(18% 0, 100% 0, 100% 76%, 0 100%);
  height: 72vh;
  opacity: 0.15;
  position: absolute;
  right: 0;
  top: 0;
  width: 62vw;
}

.political-image {
  filter: grayscale(100%) contrast(1.4) brightness(0.9);
  mix-blend-mode: multiply;
}

.opening-content {
  position: relative;
  z-index: 4;
}

.opening-content h1 {
  color: var(--parchment);
  margin-bottom: 1.4rem;
}

.signal-red {
  color: var(--signal-red);
}

.opening-caption {
  color: rgba(245, 237, 224, 0.72);
  font-size: clamp(1.05rem, 2vw, 1.45rem);
}

.grid-overlay::before {
  background-image:
    linear-gradient(to right, rgba(139, 74, 94, 0.15) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(139, 74, 94, 0.15) 1px, transparent 1px);
  background-size: 80px 80px;
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.data-corridor {
  background:
    linear-gradient(178deg, var(--obsidian-plum) 0%, var(--chamber-wine) 48%, var(--parchment) 100%);
  min-height: 170vh;
  padding-bottom: 20vh;
  z-index: 2;
}

.corridor-frame {
  display: grid;
  gap: 6vh;
  margin: 0 auto;
  max-width: 1180px;
  padding: 7vw;
  position: relative;
  z-index: 2;
}

.data-panel {
  background: rgba(26, 10, 16, 0.82);
  border: 1px solid rgba(232, 221, 208, 0.2);
  box-shadow: 0 32px 70px rgba(14, 6, 8, 0.34);
  clip-path: polygon(4% 0, 100% 7%, 96% 100%, 0 91%);
  color: rgba(245, 237, 224, 0.88);
  max-width: 760px;
  padding: clamp(2rem, 5vw, 4.5rem);
  transform: rotate(-5deg);
}

.data-panel:nth-child(2) {
  align-items: center;
  clip-path: polygon(0 10%, 96% 0, 100% 90%, 5% 100%);
  display: grid;
  gap: 2rem;
  grid-template-columns: 0.8fr 1.2fr;
  justify-self: end;
  max-width: 960px;
  transform: rotate(7deg);
}

.data-panel:nth-child(3) {
  margin-left: 5vw;
  transform: rotate(-4deg);
}

.data-panel h2 {
  color: var(--parchment);
  margin-bottom: 1.4rem;
}

.data-panel p {
  color: rgba(245, 237, 224, 0.88);
}

.panel-image {
  background:
    linear-gradient(135deg, rgba(107, 29, 52, 0.75), rgba(245, 237, 224, 0.3)),
    repeating-linear-gradient(0deg, transparent 0 18px, rgba(245, 237, 224, 0.22) 19px 20px),
    repeating-linear-gradient(90deg, rgba(14, 6, 8, 0.4) 0 20px, rgba(245, 237, 224, 0.16) 21px 24px);
  min-height: 260px;
  opacity: 0.6;
}

.atrium {
  align-items: center;
  background: var(--parchment);
  display: flex;
  justify-content: center;
  min-height: 100vh;
  z-index: 4;
}

.atrium::before,
.atrium::after {
  background: rgba(92, 26, 42, 0.65);
  content: "";
  height: 1px;
  left: -10vw;
  position: absolute;
  top: 19%;
  transform: rotate(10deg);
  width: 120vw;
}

.atrium::after {
  top: 82%;
}

.atrium-band {
  align-items: center;
  background: var(--senate-burgundy);
  display: flex;
  justify-content: center;
  min-height: 22vh;
  padding: 4rem 8vw;
  transform: rotate(10deg);
  width: 120vw;
}

.atrium-band p {
  color: var(--parchment);
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.8rem, 4vw, 4rem);
  font-style: italic;
  line-height: 1.15;
  max-width: 900px;
  text-align: center;
  transform: rotate(-10deg);
}

.archive-chamber {
  background: var(--ink-dark);
  min-height: 150vh;
  padding: 14vh 7vw 18vh;
}

.archive-intro {
  margin-bottom: 6vh;
  max-width: 790px;
  position: relative;
  z-index: 2;
}

.archive-intro h2 {
  color: var(--parchment);
}

.archive-grid {
  display: grid;
  gap: clamp(1.4rem, 3vw, 3rem);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0 auto;
  max-width: 1240px;
  perspective: 1000px;
  position: relative;
  z-index: 2;
}

.archive-card {
  background:
    linear-gradient(145deg, rgba(59, 10, 26, 0.9), rgba(14, 6, 8, 0.98));
  border: 1px solid rgba(232, 221, 208, 0.2);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
  color: rgba(245, 237, 224, 0.78);
  min-height: 280px;
  padding: clamp(1.5rem, 3vw, 2.3rem);
  transform: perspective(800px) rotate(var(--static-rotate, 3deg));
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1), border-color 0.4s ease;
}

.archive-card:nth-child(2),
.archive-card:nth-child(5) {
  margin-top: 42px;
}

.archive-card:nth-child(3),
.archive-card:nth-child(6) {
  margin-top: 84px;
}

.archive-card h3 {
  color: var(--parchment);
  margin: 1.2rem 0 1rem;
}

.archive-card p {
  color: rgba(245, 237, 224, 0.78);
}

.archive-card:hover {
  border-color: rgba(232, 221, 208, 0.38);
}

@keyframes chamber-breathe {
  from { opacity: 0.99; }
  to { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px) rotate(var(--initial-rotation, 0deg));
}

.reveal.visible {
  opacity: 1;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.data-panel.reveal.visible:nth-child(1) {
  transform: rotate(-5deg);
}

.data-panel.reveal.visible:nth-child(2) {
  transform: rotate(7deg);
}

.data-panel.reveal.visible:nth-child(3) {
  transform: rotate(-4deg);
}

.archive-card.reveal.visible {
  transform: perspective(800px) rotate(var(--static-rotate, 3deg));
}

.archive-intro.reveal.visible {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .opening-chamber {
    padding: 8rem 2rem 9rem;
  }

  .data-corridor {
    min-height: auto;
  }

  .corridor-frame {
    padding: 6rem 1.3rem 8rem;
  }

  .data-panel,
  .data-panel:nth-child(2),
  .data-panel:nth-child(3) {
    grid-template-columns: 1fr;
    margin-left: 0;
    max-width: none;
  }

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

  .archive-card:nth-child(n) {
    margin-top: 0;
  }
}