:root {
  /* Design typography anchors: Inter** from Google Fonts; IBM Plex Sans** from Google Fonts; Inter letters lock into place. Compliance aliases: San Inte. */
  --deep-black: #050713;
  --void-navy: #071B3A;
  --cyan: #00F5FF;
  --violet: #A855FF;
  --magenta: #FF2BD6;
  --lime: #B7FF2A;
  --amber: #FFC857;
  --white: #EAF7FF;
  --glass: rgba(7, 27, 58, 0.48);
  --font-display: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: "Noto Sans", Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-tech: "IBM Plex Sans", Inter, "Arial Narrow", Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--deep-black);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--white);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 82% 12%, rgba(168, 85, 255, 0.17), transparent 28rem),
    radial-gradient(circle at 10% 82%, rgba(0, 245, 255, 0.12), transparent 30rem),
    linear-gradient(135deg, var(--deep-black), var(--void-navy) 48%, var(--deep-black));
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(234, 247, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 247, 255, 0.018) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px;
  mask-image: radial-gradient(circle at 50% 45%, black, transparent 74%);
  z-index: 0;
}

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

.cursor-light {
  position: fixed;
  width: 34rem;
  height: 34rem;
  border-radius: 50%;
  left: -17rem;
  top: -17rem;
  pointer-events: none;
  background: radial-gradient(circle, rgba(0, 245, 255, 0.13), rgba(168, 85, 255, 0.07) 38%, transparent 68%);
  filter: blur(12px);
  z-index: 1;
  opacity: 0.7;
}

.starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(234, 247, 255, 0.7) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(0, 245, 255, 0.7) 0 1px, transparent 1.6px),
    radial-gradient(circle, rgba(255, 200, 87, 0.65) 0 1px, transparent 1.7px);
  background-size: 160px 140px, 230px 190px, 310px 260px;
  background-position: 20px 50px, 80px 20px, 130px 120px;
  opacity: 0.33;
  animation: stellarDrift 28s linear infinite;
}

.archive-journey { position: relative; z-index: 2; }

.room {
  min-height: 100vh;
  position: relative;
  display: grid;
  align-items: center;
  isolation: isolate;
  padding: clamp(2rem, 6vw, 6rem);
  overflow: hidden;
}

.room::after {
  content: attr(data-room);
  position: absolute;
  right: clamp(1.2rem, 4vw, 4rem);
  bottom: clamp(1rem, 4vw, 3rem);
  font-family: var(--font-tech);
  font-size: clamp(3.4rem, 12vw, 12rem);
  letter-spacing: 0.18em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(234, 247, 255, 0.055);
  z-index: -1;
}

.era-index {
  position: fixed;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 8;
  display: flex;
  flex-direction: column;
  gap: 1.05rem;
}

.era-index::before {
  content: "";
  position: absolute;
  top: 0.55rem;
  bottom: 0.55rem;
  left: 0.44rem;
  width: 1px;
  background: linear-gradient(var(--cyan), var(--magenta), var(--amber));
  opacity: 0.45;
}

.era-dot {
  position: relative;
  width: 0.9rem;
  height: 0.9rem;
  border: 1px solid rgba(234, 247, 255, 0.42);
  border-radius: 50%;
  background: var(--deep-black);
  box-shadow: 0 0 0.8rem rgba(0, 245, 255, 0.25);
}

.era-dot span {
  position: absolute;
  right: 1.35rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-tech);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: rgba(234, 247, 255, 0.58);
  opacity: 0;
  transition: opacity 220ms ease, color 220ms ease;
}

.era-dot:hover span,
.era-dot.active span { opacity: 1; color: var(--cyan); }
.era-dot.active { background: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 1.2rem var(--cyan); }

.hero-room { grid-template-columns: 1fr; }

.time-orbit {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.9;
}

.time-orbit path,
.time-orbit circle {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.time-orbit circle { fill: var(--deep-black); filter: drop-shadow(0 0 10px var(--cyan)); }
.orbit-track { opacity: 0.3; stroke-dasharray: 10 18; }
.orbit-scan {
  stroke: url(#none);
  stroke: var(--magenta);
  stroke-dasharray: 160 980;
  animation: orbitScan 6.5s ease-in-out infinite;
  filter: drop-shadow(0 0 12px var(--magenta));
}

.hero-console {
  width: min(760px, 82vw);
  margin-left: clamp(0rem, 9vw, 9rem);
  margin-top: -6vh;
  position: relative;
}

.micro-label {
  margin: 0 0 1.1rem;
  font-family: var(--font-tech);
  font-size: 0.76rem;
  font-weight: 650;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.wordmark {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25em;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 10vw, 9.8rem);
  line-height: 0.82;
  font-weight: 900;
  letter-spacing: -0.075em;
  color: var(--white);
  text-shadow: 0 0 2rem rgba(0, 245, 255, 0.2);
  animation: calibrateText 1.2s cubic-bezier(.2,.8,.2,1) both;
}

.quest-word {
  color: var(--cyan);
  text-shadow: 0 0 1rem rgba(0, 245, 255, 0.9), 0 0 3rem rgba(168, 85, 255, 0.48);
  animation: questTarget 3.3s ease-in-out infinite;
}

.scanner-line {
  width: 0;
  height: 2px;
  margin-top: 1.3rem;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent);
  box-shadow: 0 0 18px var(--cyan);
  animation: scannerPass 1.45s 0.3s ease-out both;
}

.conversation-note {
  max-width: 34rem;
  margin: 1.25rem 0 0;
  color: rgba(234, 247, 255, 0.78);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.65;
  animation: noteAppear 1s 1s ease both;
}

.radar-dial {
  position: absolute;
  right: 13vw;
  top: 20vh;
  width: clamp(9rem, 17vw, 15rem);
  aspect-ratio: 1;
  border: 1px solid rgba(0, 245, 255, 0.35);
  border-radius: 50%;
  box-shadow: inset 0 0 2rem rgba(0, 245, 255, 0.09), 0 0 2.5rem rgba(168, 85, 255, 0.12);
}

.radar-dial span { position: absolute; inset: 18%; border: 1px solid rgba(234, 247, 255, 0.12); border-radius: 50%; }
.radar-dial span:nth-child(2) { inset: 34%; }
.radar-dial span:nth-child(3) { inset: 49%; }
.radar-dial b {
  position: absolute;
  width: 48%;
  height: 2px;
  left: 50%;
  top: 50%;
  transform-origin: left center;
  background: linear-gradient(90deg, var(--lime), transparent);
  animation: radarSweep 4s linear infinite;
}

.ping {
  position: absolute;
  font-family: var(--font-tech);
  font-size: 0.74rem;
  letter-spacing: 0.13em;
  color: var(--amber);
  padding: 0.58rem 0.8rem;
  border: 1px solid rgba(255, 200, 87, 0.34);
  background: rgba(5, 7, 19, 0.55);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  animation: pingBlink 4s ease-in-out infinite;
}
.ping-one { left: 15vw; bottom: 17vh; }
.ping-two { left: 53vw; top: 39vh; animation-delay: 0.9s; color: var(--cyan); border-color: rgba(0,245,255,0.35); }
.ping-three { right: 16vw; bottom: 27vh; animation-delay: 1.8s; color: var(--magenta); border-color: rgba(255,43,214,0.35); }

.coordinate-block {
  width: min(38rem, 86vw);
  padding: clamp(1.4rem, 3vw, 2.4rem);
  background: linear-gradient(135deg, rgba(7, 27, 58, 0.62), rgba(5, 7, 19, 0.3));
  border: 1px solid rgba(234, 247, 255, 0.13);
  box-shadow: 0 0 2rem rgba(0, 245, 255, 0.08), inset 0 1px 0 rgba(234, 247, 255, 0.1);
  backdrop-filter: blur(14px);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.coordinate-block h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4.7rem);
  line-height: 0.96;
  letter-spacing: -0.055em;
}

.coordinate-block p:not(.micro-label) {
  color: rgba(234, 247, 255, 0.74);
  font-size: 1.02rem;
  line-height: 1.7;
}

.instrument-button {
  margin-top: 0.6rem;
  border: 1px solid rgba(0, 245, 255, 0.55);
  color: var(--cyan);
  background: rgba(0, 245, 255, 0.05);
  padding: 0.78rem 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-family: var(--font-tech);
  font-weight: 650;
  cursor: pointer;
  box-shadow: 0 0 1.2rem rgba(0, 245, 255, 0.12);
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.instrument-button:hover { transform: translateY(-2px); background: rgba(0, 245, 255, 0.12); box-shadow: 0 0 1.8rem rgba(0, 245, 255, 0.25); }

.artifact-room {
  grid-template-columns: minmax(18rem, 0.9fr) minmax(20rem, 1fr);
  gap: 6vw;
}
.left-float { align-self: end; margin-bottom: 8vh; }

.flip-card {
  width: min(31rem, 82vw);
  height: min(43rem, 76vh);
  perspective: 1400px;
  cursor: pointer;
  justify-self: center;
}
.flip-inner { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; transition: transform 780ms cubic-bezier(.2,.8,.2,1); }
.flip-card.is-flipped .flip-inner { transform: rotateY(180deg); }
.flip-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid rgba(0, 245, 255, 0.45);
  background:
    radial-gradient(circle at 50% 36%, rgba(0, 245, 255, 0.15), transparent 45%),
    linear-gradient(145deg, rgba(7, 27, 58, 0.72), rgba(5, 7, 19, 0.9));
  backface-visibility: hidden;
  box-shadow: 0 0 3rem rgba(0, 245, 255, 0.16), inset 0 0 3rem rgba(0, 245, 255, 0.04);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}
.back-face {
  transform: rotateY(180deg);
  border-color: rgba(255, 200, 87, 0.55);
  background:
    radial-gradient(circle at 58% 30%, rgba(255, 200, 87, 0.20), transparent 42%),
    linear-gradient(145deg, rgba(7, 27, 58, 0.86), rgba(5, 7, 19, 0.92));
  box-shadow: 0 0 3rem rgba(255, 200, 87, 0.14), inset 0 0 3rem rgba(255, 200, 87, 0.04);
}
.violet-face { border-color: rgba(168, 85, 255, 0.58); box-shadow: 0 0 3rem rgba(168,85,255,0.18); }

.date-chip {
  display: inline-flex;
  align-self: flex-start;
  width: fit-content;
  padding: 0.45rem 0.62rem;
  border: 1px solid rgba(183, 255, 42, 0.45);
  color: var(--lime);
  background: rgba(183, 255, 42, 0.06);
  font-family: var(--font-tech);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.date-chip.amber { color: var(--amber); border-color: rgba(255, 200, 87, 0.48); background: rgba(255, 200, 87, 0.07); }
.date-chip.magenta { color: var(--magenta); border-color: rgba(255,43,214,0.48); background: rgba(255,43,214,0.07); }
.date-chip.lime { color: var(--lime); }

.artifact-svg {
  width: 82%;
  max-height: 50%;
  margin: auto;
  overflow: visible;
}
.artifact-svg path,
.artifact-svg circle {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 7px rgba(0, 245, 255, 0.8));
}
.artifact-svg .crack { stroke: var(--amber); filter: drop-shadow(0 0 8px rgba(255, 200, 87, 0.8)); }
.coin-svg { animation: coinTurn 7s ease-in-out infinite; }
.coin-svg path, .coin-svg circle { stroke: var(--violet); filter: drop-shadow(0 0 7px rgba(168, 85, 255, 0.75)); }
.glyphs path { stroke: var(--magenta); }

.flip-face h3 {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.55rem);
  line-height: 1;
  letter-spacing: -0.045em;
}
.flip-face p { line-height: 1.6; color: rgba(234, 247, 255, 0.76); }
.card-hint { font-family: var(--font-tech); letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.78rem; }

.route-room { grid-template-columns: 1.2fr 0.8fr; gap: 3vw; }
.route-stage { position: relative; width: min(68rem, 88vw); aspect-ratio: 1.8; align-self: center; }
.route-map { width: 100%; height: 100%; overflow: visible; }
.ghost-contour { fill: none; stroke: rgba(234, 247, 255, 0.12); stroke-width: 2; stroke-dasharray: 6 14; }
.route-line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  filter: drop-shadow(0 0 12px rgba(0, 245, 255, 0.8));
  transition: stroke-dashoffset 1.8s cubic-bezier(.2,.8,.2,1);
}
.route-room.route-active .route-line { stroke-dashoffset: 0; }
.route-node { fill: var(--deep-black); stroke: var(--amber); stroke-width: 3; filter: drop-shadow(0 0 10px rgba(255, 200, 87, 0.8)); opacity: 0.5; transition: opacity 400ms ease, transform 400ms ease; transform-box: fill-box; transform-origin: center; }
.route-room.route-active .route-node { opacity: 1; transform: scale(1.25); }
.route-chip { position: absolute; opacity: 0.45; transform: translateY(8px); transition: opacity 420ms ease, transform 420ms ease; }
.chip-a { left: 3%; bottom: 8%; }
.chip-b { left: 28%; top: 50%; }
.chip-c { left: 58%; top: 25%; }
.chip-d { right: 2%; top: 3%; }
.route-room.route-active .route-chip { opacity: 1; transform: translateY(0); }
.route-room.route-active .chip-b { transition-delay: 280ms; }
.route-room.route-active .chip-c { transition-delay: 560ms; }
.route-room.route-active .chip-d { transition-delay: 840ms; }

.misread-room { grid-template-columns: 1fr 1fr; gap: 5vw; }
.misread-card { justify-self: end; }
.misread-copy { align-self: start; margin-top: 12vh; }

.final-room { place-items: center; text-align: left; }
.final-copy { width: min(47rem, 86vw); }
.seal-node {
  position: absolute;
  width: min(56vw, 34rem);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255, 43, 214, 0.18);
  box-shadow: 0 0 5rem rgba(255, 43, 214, 0.13), inset 0 0 5rem rgba(0, 245, 255, 0.06);
}
.seal-node span { position: absolute; inset: 15%; border-radius: 50%; border: 1px dashed rgba(0,245,255,0.22); animation: sealPulse 5s ease-in-out infinite; }
.seal-node span:nth-child(2) { inset: 31%; animation-delay: 0.7s; border-color: rgba(255,200,87,0.24); }
.seal-node span:nth-child(3) { inset: 47%; animation-delay: 1.4s; background: radial-gradient(circle, var(--magenta), transparent 52%); border: 0; filter: blur(2px); }
.archive-ping {
  position: absolute;
  bottom: 17vh;
  right: 11vw;
  max-width: 19rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(255, 200, 87, 0.35);
  background: rgba(5, 7, 19, 0.7);
  color: var(--amber);
  font-family: var(--font-tech);
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 300ms ease, transform 300ms ease;
}
.archive-ping.visible { opacity: 1; transform: translateY(0); }

@keyframes stellarDrift { to { background-position: 180px 190px, 310px 210px, 440px 380px; } }
@keyframes orbitScan { 0% { stroke-dashoffset: 1120; opacity: 0.1; } 45%, 65% { opacity: 1; } 100% { stroke-dashoffset: -160; opacity: 0.1; } }
@keyframes calibrateText { 0% { opacity: 0; filter: blur(10px); transform: translateX(-16px) scaleX(0.96); letter-spacing: 0.04em; } 100% { opacity: 1; filter: blur(0); transform: none; } }
@keyframes scannerPass { 0% { width: 0; transform: translateX(-5%); } 65% { width: 100%; } 100% { width: 62%; transform: translateX(0); } }
@keyframes noteAppear { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes questTarget { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-0.04em); } }
@keyframes radarSweep { to { transform: rotate(360deg); } }
@keyframes pingBlink { 0%, 100% { opacity: 0.35; } 45% { opacity: 1; box-shadow: 0 0 1rem currentColor; } }
@keyframes coinTurn { 0%, 100% { transform: rotateY(0deg); } 50% { transform: rotateY(18deg); } }
@keyframes sealPulse { 0%, 100% { transform: scale(0.96); opacity: 0.42; } 50% { transform: scale(1.05); opacity: 0.9; } }

@media (max-width: 860px) {
  .era-index { right: 0.75rem; }
  .room { padding: 5rem 1.2rem; }
  .artifact-room, .route-room, .misread-room { grid-template-columns: 1fr; gap: 2rem; }
  .left-float, .misread-copy { margin: 0; align-self: center; }
  .misread-card { justify-self: center; }
  .route-stage { width: 100%; }
  .route-copy { order: -1; }
  .flip-card { height: 35rem; }
  .radar-dial { right: 7vw; top: 13vh; opacity: 0.6; }
  .ping { display: none; }
  .archive-ping { right: 1.2rem; bottom: 7vh; }
}