/* Fractal Infinity — brand system
   Infinite Midnight #03091D | Archive Ivory #F3F0E4 | Signal Lime #C9FF20
   Event Horizon #111D3D | Ultraviolet #743DFF (Deep Frontier accent only, unused here) */

:root {
  --midnight: #03091d;
  --ivory: #f3f0e4;
  --lime: #c9ff20;
  --horizon: #111d3d;
  --ivory-dim: rgba(243, 240, 228, 0.68);
  --ivory-faint: rgba(243, 240, 228, 0.4);
  --max-width: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--midnight);
  color: var(--ivory);
  font-family: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--lime); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 3px;
}

/* ---- Top bar ---- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(3, 9, 29, 0.86);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(243, 240, 228, 0.08);
}
.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ivory);
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-brand img { height: 28px; width: 28px; display: block; flex-shrink: 0; }
.topbar-nav {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--ivory-dim);
}
.topbar-nav a { color: var(--ivory-dim); }
.topbar-nav a:hover { color: var(--ivory); }
.topbar .btn { padding: 8px 16px; font-size: 14px; flex-shrink: 0; }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 3px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  border: 1px solid var(--lime);
  color: var(--midnight);
  background: var(--lime);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { text-decoration: none; opacity: 0.88; }
.btn-ghost {
  background: transparent;
  color: var(--ivory);
  border: 1px solid rgba(243, 240, 228, 0.35);
}
.btn-ghost:hover { border-color: var(--ivory); opacity: 1; }

/* ---- Section rhythm ---- */
section { padding: 96px 0; }
section.tight { padding: 72px 0; }
.eyebrow {
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
  font-weight: 700;
  margin: 0 0 14px;
}
h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; margin: 0; }
h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 18px; }
p { color: var(--ivory-dim); margin: 0 0 16px; }
.lede { font-size: 19px; color: var(--ivory-dim); max-width: 640px; }

/* ---- Hero ---- */
.hero {
  padding: 88px 0 96px;
  background: radial-gradient(ellipse 900px 500px at 50% -10%, rgba(201, 255, 32, 0.08), transparent 70%);
  border-bottom: 1px solid rgba(243, 240, 228, 0.08);
}
.hero-mark {
  display: block;
  width: 96px;
  height: auto;
  margin: 0 auto 32px;
  border-radius: 8px;
}
.hero-content { text-align: center; max-width: 760px; margin: 0 auto; }
.hero h1 {
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.05;
  margin-bottom: 18px;
}
.hero .lede { margin: 0 auto 36px; text-align: center; }
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---- What we do ---- */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.method-card {
  border: 1px solid rgba(243, 240, 228, 0.14);
  background: var(--horizon);
  border-radius: 6px;
  padding: 24px;
}
.method-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 9px;
  border-radius: 3px;
  margin-bottom: 14px;
}
.tag-fact { background: rgba(201, 255, 32, 0.16); color: var(--lime); border: 1px solid rgba(201, 255, 32, 0.4); }
.tag-inference { background: rgba(243, 240, 228, 0.1); color: var(--ivory); border: 1px solid rgba(243, 240, 228, 0.3); }
.tag-scenario { background: rgba(243, 240, 228, 0.06); color: var(--ivory-dim); border: 1px dashed rgba(243, 240, 228, 0.3); }
.method-card h3 { font-size: 17px; margin-bottom: 8px; }
.method-card p { font-size: 14.5px; margin-bottom: 0; }

/* ---- Episodes ---- */
.ep-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 36px;
}
.ep-card {
  display: block;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(243, 240, 228, 0.12);
  background: var(--horizon);
}
.ep-card img { width: 100%; display: block; aspect-ratio: 16/9; object-fit: cover; }
.ep-card .ep-label {
  padding: 12px 14px 16px;
  font-size: 13.5px;
  color: var(--ivory);
  font-weight: 600;
}
.ep-card .ep-num {
  display: block;
  font-size: 11px;
  color: var(--lime);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.section-footer-link { margin-top: 28px; }

/* ---- Verticals / book callout ---- */
.vertical-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: center;
  border: 1px solid rgba(243, 240, 228, 0.14);
  background: var(--horizon);
  border-radius: 8px;
  padding: 36px;
  margin-top: 36px;
}
.vertical-card img {
  width: 100%;
  border-radius: 4px;
  display: block;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}
.vertical-eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.pill {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(201, 255, 32, 0.14);
  color: var(--lime);
  border: 1px solid rgba(201, 255, 32, 0.35);
}
.vertical-card h3 { font-size: 24px; margin-bottom: 4px; }
.vertical-byline { font-size: 14px; color: var(--ivory-faint); margin-bottom: 16px; }
.ledger-sample {
  margin-top: 18px;
  border-top: 1px solid rgba(243, 240, 228, 0.14);
  padding-top: 16px;
}
.ledger-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 13.5px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(243, 240, 228, 0.08);
}
.ledger-row:last-child { border-bottom: none; }
.ledger-claim { color: var(--ivory); flex: 1; }
.ledger-meta { color: var(--ivory-faint); white-space: nowrap; font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12.5px; }

/* ---- About ---- */
.about-block { max-width: 720px; }
.about-block p { font-size: 16.5px; }

/* ---- Legal pages ---- */
.legal-page { padding: 96px 0 48px; min-height: 70vh; }
.legal-page h1 { font-size: clamp(32px, 5vw, 48px); margin-bottom: 24px; }
.legal-page strong { color: var(--ivory); }

/* ---- Signup ---- */
.signup {
  background: var(--horizon);
  border-top: 1px solid rgba(243, 240, 228, 0.1);
  border-bottom: 1px solid rgba(243, 240, 228, 0.1);
  text-align: center;
}
.signup h2 { margin-bottom: 10px; }
.signup .lede { margin: 0 auto 32px; text-align: center; }
.beehiiv-wrap {
  max-width: 480px;
  margin: 0 auto;
}
.signup-form {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
}
.signup-form input[type="email"] {
  flex: 1;
  padding: 14px 16px;
  border-radius: 3px;
  border: 1px solid rgba(243, 240, 228, 0.3);
  background: var(--midnight);
  color: var(--ivory);
  font-size: 15px;
}
.signup-form input[type="email"]::placeholder { color: var(--ivory-faint); }
.signup-note { font-size: 12.5px; color: var(--ivory-faint); margin-top: 14px; margin-bottom: 0; }

/* ---- Footer ---- */
footer { padding: 48px 0 56px; }
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid rgba(243, 240, 228, 0.1);
  padding-top: 28px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ivory); }
.footer-brand img { height: 22px; width: 22px; border-radius: 5px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13.5px; color: var(--ivory-faint); }
.footer-links a { color: var(--ivory-faint); }
.footer-links a:hover { color: var(--lime); }
.footer-copy { font-size: 12.5px; color: var(--ivory-faint); margin-top: 20px; }

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .topbar-nav { display: none; }
  .method-grid { grid-template-columns: 1fr; }
  .ep-grid { grid-template-columns: repeat(2, 1fr); }
  .vertical-card { grid-template-columns: 1fr; }
  .vertical-card img { max-width: 200px; margin: 0 auto; }
  .signup-form { flex-direction: column; }
}
@media (max-width: 520px) {
  .ep-grid { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .topbar-brand { font-size: 13px; max-width: 46vw; }
  .topbar .btn { padding: 7px 12px; font-size: 12.5px; }
  .footer-links { gap: 12px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}