:root {
  --bg: #050506;
  --surface: #0c0c0e;
  --text-primary: rgba(237, 237, 237, 0.92);
  --text-muted: #6b6b70;
  --text-accent: #8b8b95;
  --font-display: "Instrument Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --transition: 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  color-scheme: dark;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

.cosmos {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.cosmos-deep {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 120% 80% at 50% 100%, #0a0b12 0%, transparent 55%),
    radial-gradient(ellipse 80% 60% at 80% 20%, #0d0e18 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 10% 80%, #08090f 0%, transparent 45%),
    linear-gradient(180deg, #030304 0%, #050508 40%, #020203 100%);
}

.cosmos-stars {
  position: absolute;
  inset: -8%;
  width: 116%;
  height: 116%;
  will-change: transform;
}

.cosmos-stars--far {
  opacity: 0.7;
}

.cosmos-stars--mid {
  opacity: 0.85;
}

.cosmos-stars--near {
  opacity: 1;
}

.cosmos-nebula {
  position: absolute;
  inset: -30%;
  background:
    radial-gradient(
      ellipse 45% 35% at 72% 28%,
      rgba(45, 52, 90, 0.12) 0%,
      transparent 70%
    ),
    radial-gradient(
      ellipse 35% 30% at 18% 72%,
      rgba(60, 40, 55, 0.08) 0%,
      transparent 65%
    );
  will-change: transform;
}

.cosmos-planet {
  position: absolute;
  border-radius: 50%;
  will-change: transform;
}

.cosmos-planet--1 {
  width: clamp(180px, 28vw, 340px);
  height: clamp(180px, 28vw, 340px);
  top: -8%;
  right: -6%;
  background:
    radial-gradient(
      circle at 38% 32%,
      rgba(120, 130, 160, 0.18) 0%,
      rgba(55, 62, 85, 0.35) 35%,
      rgba(20, 22, 32, 0.85) 70%,
      rgba(8, 9, 14, 0.95) 100%
    );
  box-shadow:
    inset -20px -30px 60px rgba(0, 0, 0, 0.6),
    0 0 80px rgba(70, 80, 120, 0.06);
}

.cosmos-planet--1::after {
  content: "";
  position: absolute;
  inset: 42% -30% auto;
  height: 3px;
  border-radius: 50%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(140, 150, 180, 0.08) 30%,
    rgba(160, 170, 200, 0.12) 50%,
    rgba(140, 150, 180, 0.08) 70%,
    transparent
  );
  transform: rotate(-12deg);
  filter: blur(1px);
}

.cosmos-planet--2 {
  width: clamp(100px, 16vw, 200px);
  height: clamp(100px, 16vw, 200px);
  bottom: 12%;
  left: -4%;
  background:
    radial-gradient(
      circle at 42% 38%,
      rgba(90, 70, 65, 0.2) 0%,
      rgba(45, 35, 38, 0.5) 40%,
      rgba(15, 12, 14, 0.9) 100%
    );
  box-shadow:
    inset -12px -18px 40px rgba(0, 0, 0, 0.5),
    0 0 50px rgba(80, 60, 55, 0.05);
  opacity: 0.85;
}

.cosmos-planet--3 {
  width: clamp(40px, 6vw, 72px);
  height: clamp(40px, 6vw, 72px);
  top: 38%;
  left: 22%;
  background:
    radial-gradient(
      circle at 40% 35%,
      rgba(100, 90, 130, 0.25) 0%,
      rgba(40, 35, 55, 0.6) 50%,
      rgba(12, 10, 18, 0.95) 100%
    );
  box-shadow: 0 0 30px rgba(90, 80, 120, 0.04);
  opacity: 0.6;
}

.cosmos-vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 70% 60% at 50% 45%,
      transparent 30%,
      rgba(3, 3, 4, 0.5) 75%,
      rgba(2, 2, 3, 0.85) 100%
    );
}

.hero {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition);
}

.hero.loaded {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .hero {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.wordmark {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 10vw, 4.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-md);
}

.wordmark-prefix {
  color: var(--text-muted);
  font-weight: 500;
}

.wordmark-suffix {
  color: var(--text-primary);
}

.tagline {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-lg);
  max-width: 28ch;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.02em;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 200ms ease, border-color 200ms ease;
}

.product-link-arrow {
  display: inline-block;
  transition: transform 200ms ease;
}

.product-link:hover,
.product-link:focus-visible {
  color: var(--text-primary);
  border-bottom-color: var(--text-accent);
}

.product-link:hover .product-link-arrow,
.product-link:focus-visible .product-link-arrow {
  transform: translateX(3px);
}

.product-link:focus-visible {
  outline: 1px solid var(--text-accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  color: var(--text-muted);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-separator {
  opacity: 0.5;
}

@media (min-width: 768px) {
  .tagline {
    font-size: 0.875rem;
  }

  .product-link {
    font-size: 0.875rem;
  }

  .site-footer {
    font-size: 0.75rem;
  }
}