:root {
  color-scheme: dark;
  --bg: #09090b;
  --bg-elev: #111114;
  --fg: #f4f4f5;
  --muted: #a1a1aa;
  --line: color-mix(in oklab, #fff 9%, transparent);
  --accent: #e4e4e7;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "Geist", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  position: relative;
  overflow-x: hidden;
}

/* Atmosphere: cool graphite wash, not purple mesh */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(255, 255, 255, 0.07), transparent 58%),
    radial-gradient(720px 480px at 92% 18%, rgba(120, 140, 160, 0.12), transparent 55%),
    radial-gradient(640px 420px at 70% 110%, rgba(40, 44, 52, 0.55), transparent 60%),
    var(--bg);
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.shell {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: 1fr;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 26rem);
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
  align-content: center;
  padding: clamp(2rem, 6vh, 4rem) clamp(1.25rem, 3vw, 2rem);
  max-width: 72rem;
  width: 100%;
  margin: 0 auto;
}

.hero-copy {
  max-width: 34rem;
  animation: rise 0.9s var(--ease) both;
}

.hero-head {
  margin: 0 0 1.15rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.55rem;
  display: block;
  object-fit: cover;
  flex-shrink: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.kicker {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 0 0 0.9rem;
  font-size: clamp(2.35rem, 5.5vw, 3.65rem);
  font-weight: 560;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.lede {
  margin: 0 0 1.6rem;
  max-width: 34ch;
  font-size: 1.05rem;
  line-height: 1.55;
  color: color-mix(in oklab, var(--fg) 78%, var(--muted));
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 520;
  letter-spacing: -0.01em;
  border-radius: 0.7rem;
  padding: 0.72rem 1.05rem;
  text-decoration: none;
  transition:
    transform 0.18s var(--ease),
    background 0.22s var(--ease),
    color 0.22s var(--ease),
    border-color 0.22s var(--ease);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: #f4f4f5;
  color: #09090b;
}

.btn-primary:hover {
  background: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  background: color-mix(in oklab, #fff 5%, transparent);
  border-color: color-mix(in oklab, #fff 16%, transparent);
}

.meta {
  margin-top: 1.75rem;
  font-size: 0.84rem;
  color: var(--muted);
  max-width: 36ch;
  line-height: 1.5;
}

.meta strong {
  color: color-mix(in oklab, var(--fg) 88%, var(--muted));
  font-weight: 520;
}

.meta a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in oklab, var(--fg) 28%, transparent);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.meta a:hover {
  color: var(--fg);
  border-bottom-color: color-mix(in oklab, var(--fg) 70%, transparent);
}

.meta a strong {
  color: inherit;
}

.install {
  width: 100%;
  animation: rise 0.9s var(--ease) 0.08s both;
}

.install-tabs {
  display: inline-flex;
  gap: 0.2rem;
  padding: 0.2rem;
  margin-bottom: 0.65rem;
  border-radius: 0.65rem;
  background: color-mix(in oklab, #fff 5%, transparent);
  border: 1px solid var(--line);
}

.install-tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.4rem 0.7rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition:
    color 0.2s var(--ease),
    background 0.2s var(--ease);
}

.install-tab.is-on {
  color: var(--fg);
  background: color-mix(in oklab, #fff 8%, transparent);
}

.install-pane {
  display: none;
  flex-direction: column;
  gap: 0.65rem;
}

.install-pane.is-on {
  display: flex;
}

.install-block {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: color-mix(in oklab, var(--bg-elev) 88%, transparent);
  overflow: hidden;
}

.install-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.copy-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  font: inherit;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.28rem 0.5rem;
  border-radius: 0.4rem;
  cursor: pointer;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.copy-btn:hover {
  background: color-mix(in oklab, #fff 6%, transparent);
  border-color: color-mix(in oklab, #fff 16%, transparent);
}

.copy-btn:active {
  transform: scale(0.98);
}

.install-block pre {
  margin: 0;
  padding: 0.85rem 0.9rem 1rem;
  overflow-x: auto;
}

.install-block code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: color-mix(in oklab, var(--fg) 92%, var(--muted));
  white-space: pre;
}


.fab-hint {
  position: fixed;
  z-index: 65;
  right: calc(1rem + 2.75rem + 0.35rem + env(safe-area-inset-right, 0px));
  bottom: calc(1.25rem + 2.75rem + 0.15rem + env(safe-area-inset-bottom, 0px));
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.15rem;
  color: var(--muted);
  pointer-events: none;
  opacity: 0;
  animation: fab-hint-in 0.7s var(--ease) 0.55s both;
}

.fab-hint.is-gone {
  opacity: 0 !important;
  animation: none;
  transition: opacity 0.25s var(--ease);
}

.fab-hint-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-right: 0.35rem;
}

.fab-hint-arrow {
  width: 4.5rem;
  height: 3rem;
  display: block;
  transform-origin: 85% 85%;
  animation: fab-hint-nudge 2.4s var(--ease) 1.1s infinite;
}

@keyframes fab-hint-in {
  from {
    opacity: 0;
    transform: translate(6px, -6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fab-hint-nudge {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(3px, 4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-copy {
    animation: none;
  }

  .fab-hint {
    animation: none;
    opacity: 1;
  }

  .fab-hint-arrow {
    animation: none;
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: clamp(2rem, 6vh, 3rem);
  }

  h1 {
    font-size: clamp(2.1rem, 10vw, 2.6rem);
  }

  .fab-hint {
    right: calc(1rem + 2.75rem + 0.2rem + env(safe-area-inset-right, 0px));
    bottom: calc(5.25rem + 2.75rem + env(safe-area-inset-bottom, 0px));
  }
}