:root {
  --ink: oklch(93% 0.015 265);
  --ink-soft: oklch(78% 0.025 265);
  --ink-faint: oklch(58% 0.03 265);
  --night: oklch(14% 0.025 268);
  --night-deep: oklch(9% 0.02 270);
  --accent: oklch(82% 0.09 85);
  --serif: ui-serif, "New York", Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  color-scheme: dark;
}

body {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  font-family: var(--sans);
  color: var(--ink);
  background: linear-gradient(180deg, var(--night) 0%, var(--night-deep) 100%);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Night sky ------------------------------------------------------------- */

.sky {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.sky__nebula {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 44% 36% at 22% 26%, oklch(46% 0.10 290 / 0.30), transparent 65%),
    radial-gradient(ellipse 38% 34% at 78% 18%, oklch(52% 0.09 250 / 0.22), transparent 68%),
    radial-gradient(ellipse 52% 44% at 60% 88%, oklch(40% 0.09 320 / 0.20), transparent 62%);
  filter: blur(2px);
}

.sky__stars,
.sky__stars::after {
  position: absolute;
  inset: 0;
}

.sky__stars {
  background-image:
    radial-gradient(1.2px 1.2px at 8% 12%, oklch(96% 0.01 265 / 0.9), transparent 100%),
    radial-gradient(1.4px 1.4px at 21% 68%, oklch(96% 0.01 265 / 0.8), transparent 100%),
    radial-gradient(1.1px 1.1px at 33% 30%, oklch(96% 0.01 265 / 0.7), transparent 100%),
    radial-gradient(1.6px 1.6px at 44% 82%, oklch(92% 0.03 85 / 0.8), transparent 100%),
    radial-gradient(1.2px 1.2px at 56% 16%, oklch(96% 0.01 265 / 0.9), transparent 100%),
    radial-gradient(1.3px 1.3px at 67% 55%, oklch(96% 0.01 265 / 0.7), transparent 100%),
    radial-gradient(1.1px 1.1px at 76% 34%, oklch(92% 0.03 85 / 0.7), transparent 100%),
    radial-gradient(1.5px 1.5px at 87% 74%, oklch(96% 0.01 265 / 0.85), transparent 100%),
    radial-gradient(1.2px 1.2px at 94% 22%, oklch(96% 0.01 265 / 0.8), transparent 100%),
    radial-gradient(1.1px 1.1px at 14% 88%, oklch(96% 0.01 265 / 0.7), transparent 100%);
  animation: twinkle 7s ease-in-out infinite alternate;
}

.sky__stars--far {
  background-image:
    radial-gradient(0.9px 0.9px at 5% 45%, oklch(90% 0.01 265 / 0.55), transparent 100%),
    radial-gradient(0.8px 0.8px at 17% 23%, oklch(90% 0.01 265 / 0.5), transparent 100%),
    radial-gradient(0.9px 0.9px at 28% 58%, oklch(90% 0.01 265 / 0.45), transparent 100%),
    radial-gradient(0.8px 0.8px at 39% 9%, oklch(90% 0.01 265 / 0.55), transparent 100%),
    radial-gradient(0.9px 0.9px at 49% 40%, oklch(90% 0.01 265 / 0.5), transparent 100%),
    radial-gradient(0.8px 0.8px at 61% 78%, oklch(90% 0.01 265 / 0.45), transparent 100%),
    radial-gradient(0.9px 0.9px at 72% 12%, oklch(90% 0.01 265 / 0.55), transparent 100%),
    radial-gradient(0.8px 0.8px at 83% 50%, oklch(90% 0.01 265 / 0.5), transparent 100%),
    radial-gradient(0.9px 0.9px at 91% 86%, oklch(90% 0.01 265 / 0.45), transparent 100%),
    radial-gradient(0.8px 0.8px at 63% 31%, oklch(90% 0.01 265 / 0.5), transparent 100%),
    radial-gradient(0.9px 0.9px at 36% 71%, oklch(90% 0.01 265 / 0.45), transparent 100%),
    radial-gradient(0.8px 0.8px at 12% 5%, oklch(90% 0.01 265 / 0.55), transparent 100%);
  animation: twinkle 9s ease-in-out infinite alternate-reverse;
}

@keyframes twinkle {
  from { opacity: 0.55; }
  to { opacity: 1; }
}

/* Constellation --------------------------------------------------------- */

.constellation {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* Stage ----------------------------------------------------------------- */

.stage {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.5rem 0;
  animation: rise 2.4s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
}

.wordmark {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.75rem, 9vw, 4.75rem);
  letter-spacing: 0.01em;
  line-height: 1.1;
  text-shadow:
    0 0 18px oklch(80% 0.06 280 / 0.22),
    0 0 64px oklch(66% 0.10 290 / 0.26);
}

.line {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.0625rem, 3vw, 1.375rem);
  color: var(--ink-soft);
  margin-top: 1.25rem;
  animation: breathe 10s ease-in-out 3s infinite;
}

/* Footer ---------------------------------------------------------------- */

.mark {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem 1.5rem 2.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  animation: rise 2.4s cubic-bezier(0.16, 1, 0.3, 1) 1.5s both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes breathe {
  0%, 100% { opacity: 0.74; }
  50% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .sky__stars,
  .sky__stars--far,
  .stage,
  .mark {
    animation: none;
  }

  .line {
    animation: none;
    opacity: 0.88;
  }
}