/* qubit — deep space, constellation, bra-ket math */

:root {
  --bg: #05081 4;
  --bg: #050814;
  --bg-2: #07091a;
  --ink: #e6ecf8;
  --dim: #8b96ad;
  --muted: #5e6a82;
  --cyan: #22d3ee;
  --blue: #60a5fa;
  --violet: #a78bfa;
  --hair: rgba(120, 150, 220, 0.14);
  --card: rgba(14, 20, 40, 0.55);
  --glow: rgba(96, 165, 250, 0.18);

  --serif: "Fraunces", "Space Grotesk", ui-serif, Georgia, serif;
  --sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: #050814;
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* starfield — tiny radial gradients at fixed positions */
body {
  background:
    radial-gradient(1px 1px at 8% 12%, rgba(230,236,248,0.9), transparent 60%),
    radial-gradient(1px 1px at 14% 78%, rgba(230,236,248,0.7), transparent 60%),
    radial-gradient(1px 1px at 22% 42%, rgba(167,139,250,0.7), transparent 60%),
    radial-gradient(1px 1px at 27% 9%,  rgba(230,236,248,0.5), transparent 60%),
    radial-gradient(1px 1px at 33% 63%, rgba(96,165,250,0.8),  transparent 60%),
    radial-gradient(1px 1px at 41% 24%, rgba(230,236,248,0.6), transparent 60%),
    radial-gradient(1.2px 1.2px at 48% 88%, rgba(34,211,238,0.7), transparent 60%),
    radial-gradient(1px 1px at 55% 18%, rgba(230,236,248,0.8), transparent 60%),
    radial-gradient(1px 1px at 61% 52%, rgba(167,139,250,0.6), transparent 60%),
    radial-gradient(1px 1px at 67% 72%, rgba(230,236,248,0.5), transparent 60%),
    radial-gradient(1.2px 1.2px at 74% 31%, rgba(96,165,250,0.7), transparent 60%),
    radial-gradient(1px 1px at 79% 84%, rgba(230,236,248,0.7), transparent 60%),
    radial-gradient(1px 1px at 85% 14%, rgba(34,211,238,0.6),  transparent 60%),
    radial-gradient(1px 1px at 88% 47%, rgba(230,236,248,0.5), transparent 60%),
    radial-gradient(1px 1px at 92% 68%, rgba(167,139,250,0.6), transparent 60%),
    radial-gradient(1px 1px at 96% 22%, rgba(230,236,248,0.7), transparent 60%),
    radial-gradient(1.2px 1.2px at 4% 55%, rgba(96,165,250,0.5), transparent 60%),
    radial-gradient(1px 1px at 18% 93%, rgba(230,236,248,0.6), transparent 60%),
    /* soft cosmic glow top center */
    radial-gradient(ellipse 900px 500px at 50% -100px, rgba(96,165,250,0.12), transparent 70%),
    radial-gradient(ellipse 600px 400px at 80% 10%, rgba(167,139,250,0.07), transparent 70%),
    #050814;
  background-attachment: fixed;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
}

/* nav */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0 8px;
}
.nav-logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none;
  font-family: var(--serif);
  font-size: 15px; font-weight: 400;
  letter-spacing: 0.01em;
}
.nav-right { display: flex; align-items: center; gap: 22px; }
.nav-link {
  color: var(--dim); text-decoration: none;
  font-size: 14px; letter-spacing: 0.02em;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--cyan); }
.nav-cta {
  color: var(--ink); text-decoration: none;
  font-size: 14px;
  padding: 7px 14px;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: rgba(96,165,250,0.05);
  transition: border-color 0.2s, background 0.2s;
}
.nav-cta:hover {
  border-color: rgba(34,211,238,0.45);
  background: rgba(34,211,238,0.08);
}

/* hero */
.hero {
  padding: 80px 0 60px;
  text-align: left;
  position: relative;
}
.hero-inner { max-width: 820px; }
.hero-kicker {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  margin-bottom: 28px;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(44px, 7vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  color: var(--ink);
}
.hero-title .accent {
  background: linear-gradient(110deg, var(--blue), var(--cyan) 60%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
  font-weight: 400;
}
.hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--dim);
  max-width: 680px;
  margin: 0 0 22px;
}
.hero-math {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--violet);
  opacity: 0.85;
  letter-spacing: 0.04em;
  margin: 0 0 32px;
  padding: 10px 0;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  max-width: 680px;
}
.hero-cta-row {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 48px;
}
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-family: var(--sans);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: all 0.2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, rgba(96,165,250,0.18), rgba(34,211,238,0.18));
  color: var(--ink);
  border-color: rgba(96,165,250,0.4);
  box-shadow: 0 0 24px rgba(96,165,250,0.12), inset 0 0 24px rgba(34,211,238,0.05);
}
.btn-primary:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 32px rgba(34,211,238,0.28), inset 0 0 24px rgba(34,211,238,0.08);
  transform: translateY(-1px);
}
.btn-ghost {
  color: var(--dim);
  border-color: var(--hair);
}
.btn-ghost:hover {
  color: var(--ink);
  border-color: rgba(167,139,250,0.4);
}

/* frosted — the glass demo card */
.frosted {
  background: linear-gradient(180deg, rgba(10,15,30,0.75), rgba(5,8,20,0.75));
  border: 1px solid var(--hair);
  border-radius: 10px;
  padding: 22px 24px;
  box-shadow:
    inset 0 0 40px rgba(96,165,250,0.04),
    0 1px 0 rgba(255,255,255,0.02),
    0 20px 60px rgba(0,0,0,0.35);
  backdrop-filter: blur(2px);
  position: relative;
  overflow: hidden;
}
.frosted::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: 10px;
  pointer-events: none;
  background: radial-gradient(ellipse 500px 200px at 50% -50px, rgba(34,211,238,0.08), transparent 70%);
}
.demo {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink);
  margin: 0;
  white-space: pre;
  overflow-x: auto;
  position: relative;
  z-index: 1;
}
.c-cmd     { color: var(--violet); }
.c-accent  { color: var(--cyan); }
.c-dim     { color: var(--muted); }
.fade-label {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
  position: relative; z-index: 1;
}

/* section scaffolding */
section { padding: 72px 0; }
.section-eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--dim);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(30px, 4.5vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0 0 36px;
  color: var(--ink);
}

/* features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--hair);
  border-radius: 10px;
  padding: 26px 24px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  position: relative;
}
.feature::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: 10px;
  background: radial-gradient(ellipse at 50% 0%, rgba(34,211,238,0.06), transparent 60%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}
.feature:hover {
  transform: translateY(-3px);
  border-color: rgba(34,211,238,0.35);
  box-shadow: 0 0 0 1px rgba(34,211,238,0.1), 0 8px 30px rgba(34,211,238,0.08);
}
.feature:hover::after { opacity: 1; }
.feature-icon {
  width: 28px; height: 28px;
  color: var(--cyan);
  margin-bottom: 16px;
  opacity: 0.9;
}
.feature-icon svg { width: 100%; height: 100%; }
.feature h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.feature p {
  font-size: 14px;
  color: var(--dim);
  margin: 0;
  line-height: 1.65;
}
.feature code, .install code, .essay code {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--cyan);
  background: rgba(34,211,238,0.06);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(34,211,238,0.12);
}

/* essay */
.essay {
  max-width: 720px;
  margin: 0 auto;
}
.essay-rule {
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.5;
}
.essay-body {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 18px;
  line-height: 1.75;
  color: #c7cfe0;
}
.essay-body p { margin: 0 0 22px; }
.essay-body .pull {
  color: var(--violet);
  font-style: italic;
}

/* install */
.install-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.install-card {
  background: var(--card);
  border: 1px solid var(--hair);
  border-radius: 10px;
  padding: 24px;
}
.install-card h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 16px;
  margin: 0 0 14px;
  color: var(--ink);
}
.install-card pre {
  margin: 0 0 12px;
  padding: 14px 16px;
  background: rgba(5,8,20,0.6);
  border: 1px solid var(--hair);
  border-radius: 6px;
  overflow-x: auto;
}
.install-card pre code {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--cyan);
  background: transparent;
  padding: 0; border: 0;
  white-space: pre;
}
.install-card .note {
  font-size: 13px;
  color: var(--dim);
  margin: 0;
  line-height: 1.6;
}

/* footer */
.footer {
  padding: 40px 0 60px;
  border-top: 1px solid var(--hair);
  margin-top: 40px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.02em;
  flex-wrap: wrap;
  gap: 14px;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a {
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--cyan); }

@media (max-width: 640px) {
  section { padding: 56px 0; }
  .hero { padding: 48px 0 40px; }
  .frosted { padding: 16px 14px; }
  .demo { font-size: 11.5px; }
}