:root {
  --void: #15233d;
  --saffron: #c85a1a;
  --pearl: #f3ead8;
  --gold: #e2c48a;
  --serif: "Cormorant Garamond", Georgia, serif;
  --devanagari: "Tiro Devanagari Hindi", serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--saffron);
  color: var(--pearl);
  font-family: var(--serif);
}

#cosmos {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
}

#boot {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-content: center;
  text-align: center;
  background: var(--saffron);
  transition: opacity 0.8s ease;
}

#boot p {
  margin: 0;
  font-family: var(--devanagari);
  font-size: 2.4rem;
}

#boot span {
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.72rem;
  opacity: 0.6;
}

#boot.is-gone {
  opacity: 0;
  pointer-events: none;
}

#shravan {
  position: fixed;
  right: 1.2rem;
  bottom: 1.4rem;
  z-index: 24;
  appearance: none;
  border: 1px solid rgba(243, 234, 216, 0.35);
  background: rgba(200, 90, 26, 0.55);
  color: var(--pearl);
  padding: 0.45rem 0.75rem;
  font-family: var(--devanagari);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

#shravan.is-on {
  border-color: var(--gold);
  background: rgba(143, 53, 16, 0.7);
}

#shravan.needs-tap {
  animation: shravan-pulse 1.6s ease-in-out infinite;
}

@keyframes shravan-pulse {
  0%,
  100% {
    opacity: 0.7;
  }
  50% {
    opacity: 1;
  }
}

.exist-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 1rem 1.4rem;
  font-size: 0.92rem;
  mix-blend-mode: difference;
}

.exist-bar a,
.exist-bar span {
  text-decoration: none;
  color: inherit;
}

.exist-bar strong {
  font-family: var(--devanagari);
  font-weight: 400;
}

.exist-bar span {
  justify-self: end;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.68rem;
  opacity: 0.7;
}

.altitude {
  position: fixed;
  right: 1.2rem;
  top: 50%;
  z-index: 20;
  transform: translateY(-50%);
  display: grid;
  gap: 0.55rem;
}

.altitude button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--pearl);
  font-family: var(--devanagari);
  font-size: 0.78rem;
  opacity: 0.4;
  cursor: pointer;
  text-align: right;
}

.altitude button.is-on,
.altitude button:hover {
  opacity: 1;
}

.track {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.realm {
  min-height: 100vh;
  display: grid;
  align-content: end;
  padding: 0 8vw 12vh;
  max-width: 36rem;
}

.realm .kicker {
  margin: 0 0 0.4rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.7rem;
  color: var(--gold);
}

.realm h1 {
  margin: 0 0 0.7rem;
  font-family: var(--devanagari);
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  font-weight: 400;
}

.realm p {
  margin: 0;
  line-height: 1.65;
  font-size: 1.15rem;
  text-shadow: 0 8px 30px #07060d;
}

#inside {
  position: fixed;
  z-index: 22;
  left: 1.4rem;
  bottom: 1.4rem;
  width: auto;
  padding: 0;
  background: transparent;
  border: 0;
}

#inside[hidden] {
  display: none;
}

#leave {
  appearance: none;
  margin: 0;
  border: 1px solid var(--pearl);
  background: rgba(7, 6, 13, 0.55);
  color: var(--pearl);
  padding: 0.5rem 0.8rem;
  font: inherit;
  cursor: pointer;
}

.chart {
  position: relative;
  z-index: 3;
  margin: 0;
  padding: 8vh 8vw 12vh;
  background: linear-gradient(180deg, transparent, #07060d 18%);
}

.chart img {
  display: block;
  width: min(420px, 100%);
  height: auto;
  border: 1px solid rgba(243, 234, 216, 0.18);
}

.chart figcaption {
  max-width: 36rem;
  margin-top: 0.8rem;
  font-size: 0.92rem;
  opacity: 0.75;
  line-height: 1.5;
}

@media (max-width: 800px) {
  .altitude {
    right: 0.5rem;
  }

  .exist-bar span {
    display: none;
  }

  .realm {
    padding: 0 1.3rem 10vh;
  }
}