/* Kurat0r / Pensiv — shared tokens & primitives */
:root {
  --ink: #0B0F14;
  --paper: #F7F7F4;
  --accent: #3B5BDB;
  --accent-soft: #E8ECFB;
  --ember: #E07A3C;
  --muted: #5A6473;
  --rule: #E5E5E0;
  --bg: var(--paper);
  --fg: var(--ink);
  --fg-muted: var(--muted);
  --rule-c: var(--rule);
  --soft: var(--accent-soft);
  --maxw: 1200px;
  --radius: 6px;
  --pad-x: clamp(20px, 4vw, 40px);
}

[data-theme="dark"] {
  --bg: #0B0F14;
  --fg: #F0EFEA;
  --fg-muted: #8A93A4;
  --rule-c: #1B2230;
  --soft: rgba(59, 91, 219, 0.14);
  --paper: #0B0F14;
  --ink: #F0EFEA;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body { font-feature-settings: 'ss01', 'cv11'; }

h1, h2, h3, h4, .display {
  font-family: 'Inter Tight', 'Inter', system-ui, sans-serif;
  font-weight: 600;
  letter-spacing: -0.022em;
  color: var(--fg);
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(40px, 6vw, 72px); line-height: 1.02; letter-spacing: -0.03em; }
h2 { font-size: clamp(28px, 3.6vw, 44px); line-height: 1.1; }
h3 { font-size: clamp(20px, 2vw, 24px); line-height: 1.25; }
p { margin: 0; color: var(--fg); }
.muted { color: var(--fg-muted); }
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 0.86em; }
a { color: inherit; }

/* ---------- Layout ---------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
section { padding: clamp(60px, 9vw, 120px) 0; border-top: 1px solid var(--rule-c); }
section:first-of-type { border-top: 0; }

/* ---------- Top nav ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--rule-c);
}
.topnav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px var(--pad-x);
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand {
  font-family: 'Inter Tight', sans-serif;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.02em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.brand .zero {
  display: inline-flex;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  position: relative;
  margin: 0 0.5px;
}
.brand .zero::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  border: 1px solid currentColor;
  opacity: 0.55;
}
.nav-links {
  display: flex;
  gap: 22px;
  margin-left: auto;
  align-items: center;
}
.nav-links a {
  text-decoration: none;
  font-size: 14px;
  color: var(--fg-muted);
  transition: color 120ms ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); }
.dropdown {
  position: relative;
  display: inline-block;
}
.dropdown > a {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -12px;
  margin-top: 8px;
  min-width: 240px;
  background: var(--bg);
  border: 1px solid var(--rule-c);
  border-radius: 8px;
  box-shadow: 0 8px 24px -8px rgba(0,0,0,0.12), 0 2px 8px -2px rgba(0,0,0,0.06);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 0s linear 160ms;
  z-index: 100;
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 160ms ease, transform 160ms ease, visibility 0s;
}
.dropdown-menu a {
  display: block;
  padding: 9px 12px;
  border-radius: 5px;
  font-size: 14px;
  color: var(--fg-muted);
  white-space: nowrap;
  transition: background 120ms ease, color 120ms ease;
}
.dropdown-menu a:hover {
  background: color-mix(in oklab, var(--accent) 6%, var(--bg));
  color: var(--fg);
}
/* Invisible hover bridge so menu doesn't close when crossing the gap */
.dropdown::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 12px;
}
.nav-cta {
  display: flex;
  gap: 10px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'Inter Tight', sans-serif;
  font-size: 14px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 140ms ease;
  background: transparent;
  color: var(--fg);
  letter-spacing: -0.005em;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost {
  border-color: var(--rule-c);
  color: var(--fg);
}
.btn-ghost:hover { border-color: var(--fg); }
.btn-quiet {
  color: var(--fg-muted);
  padding: 9px 0;
}
.btn-quiet:hover { color: var(--fg); }
.btn-arrow::after { content: "→"; transition: transform 200ms ease; }
.btn-arrow:hover::after { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(60px, 8vw, 100px);
  padding-bottom: clamp(60px, 8vw, 110px);
}
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}
.hero h1 { margin: 18px 0 22px; }
.hero-sub {
  font-size: clamp(17px, 1.4vw, 20px);
  color: var(--fg-muted);
  max-width: 56ch;
  margin-bottom: 32px;
  text-wrap: pretty;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.trust-strip {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--rule-c);
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}
.trust-strip .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 18%, transparent);
}

/* ---------- Provenance chip ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 4px 8px;
  border: 1px solid var(--rule-c);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg-muted);
  letter-spacing: 0.01em;
}
.chip::before {
  content: "";
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule-c);
  border: 1px solid var(--rule-c);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 48px;
}
@media (max-width: 800px) { .feature-grid { grid-template-columns: 1fr; } }
.feature {
  background: var(--bg);
  padding: 28px 26px 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 180px;
}
.feature-verb {
  font-family: 'Inter Tight', sans-serif;
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.015em;
}
.feature-verb .accent { color: var(--accent); }
.feature p { color: var(--fg-muted); font-size: 15px; line-height: 1.5; }
.feature-icon {
  width: 22px; height: 22px;
  color: var(--accent);
  margin-bottom: 8px;
}

/* ---------- Diff band ---------- */
.diff-band {
  background: var(--soft);
  border-top: 1px solid var(--rule-c);
  border-bottom: 1px solid var(--rule-c);
}
[data-theme="dark"] .diff-band { background: rgba(59, 91, 219, 0.06); }
.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
@media (max-width: 800px) { .diff-grid { grid-template-columns: 1fr; gap: 30px; } }
.diff-band p { color: var(--fg); font-size: 18px; max-width: 52ch; text-wrap: pretty; }

/* ---------- Two-up beneficiaries ---------- */
.two-up {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 48px;
}
@media (max-width: 800px) { .two-up { grid-template-columns: 1fr; } }
.two-up .card {
  border: 1px solid var(--rule-c);
  border-radius: 10px;
  padding: 32px 30px;
  background: var(--bg);
}
.two-up .card h3 { margin-bottom: 12px; }
.two-up .card p { color: var(--fg-muted); }
.two-up .card .label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
}

/* ---------- Closing CTA ---------- */
.closing {
  text-align: center;
  padding: clamp(80px, 10vw, 140px) var(--pad-x);
}
.closing h2 { margin-bottom: 28px; }
.closing-ctas { display: inline-flex; gap: 12px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--rule-c);
  padding: 60px 0 40px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-col h5 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 0 0 16px;
  font-weight: 500;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { text-decoration: none; color: var(--fg); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--rule-c);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--fg-muted);
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
}

/* ---------- Waitlist (smooth-scroll target) ---------- */
.waitlist-section {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(80px, 10vw, 130px) 0;
  border: 0;
}
[data-theme="dark"] .waitlist-section { background: #04070b; }
.waitlist-section h2 { color: var(--paper); }
.waitlist-section .muted-on-dark { color: rgba(247, 247, 244, 0.62); }
.waitlist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
@media (max-width: 800px) { .waitlist-grid { grid-template-columns: 1fr; gap: 32px; } }
.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.waitlist-form .row { display: flex; gap: 12px; }
.waitlist-form .row > * { flex: 1; }
.waitlist-form input,
.waitlist-form textarea {
  background: rgba(247, 247, 244, 0.04);
  border: 1px solid rgba(247, 247, 244, 0.14);
  color: var(--paper);
  padding: 12px 14px;
  border-radius: 6px;
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 120ms ease, background 120ms ease;
}
.waitlist-form input::placeholder,
.waitlist-form textarea::placeholder { color: rgba(247, 247, 244, 0.35); }
.waitlist-form input:focus,
.waitlist-form textarea:focus {
  border-color: var(--accent);
  background: rgba(59, 91, 219, 0.08);
}
.waitlist-form textarea { min-height: 90px; resize: vertical; font-family: inherit; }
.waitlist-form .form-cta {
  margin-top: 8px;
  align-self: flex-start;
}
.waitlist-microcopy {
  font-size: 12px;
  color: rgba(247, 247, 244, 0.45);
  font-family: 'JetBrains Mono', monospace;
  margin-top: 4px;
}

/* ---------- Page header (sub-pages) ---------- */
.page-header {
  padding: clamp(80px, 10vw, 130px) 0 clamp(40px, 6vw, 80px);
  border-bottom: 1px solid var(--rule-c);
}
.page-header h1 { font-size: clamp(36px, 5vw, 56px); max-width: 22ch; }
.page-header .lede {
  margin-top: 24px;
  font-size: clamp(16px, 1.3vw, 20px);
  color: var(--fg-muted);
  max-width: 60ch;
  text-wrap: pretty;
}

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--rule-c);
  border: 1px solid var(--rule-c);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 48px;
}
@media (max-width: 800px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: var(--bg);
  padding: 32px 26px;
  position: relative;
  min-height: 220px;
}
.step-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.step h3 { font-size: 22px; margin-bottom: 10px; }
.step p { color: var(--fg-muted); font-size: 15px; line-height: 1.55; }

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}
@media (max-width: 1000px) { .pricing-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .pricing-grid { grid-template-columns: 1fr; } }
.tier {
  border: 1px solid var(--rule-c);
  border-radius: 10px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--bg);
  transition: border-color 160ms ease;
}
.tier:hover { border-color: var(--fg); }
.tier.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.tier h3 { font-size: 22px; }
.tier .price {
  font-family: 'Inter Tight', sans-serif;
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.tier ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.tier ul li {
  font-size: 14px;
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.45;
}
.tier ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 8px;
  border-left: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent);
  transform: rotate(-45deg);
}
.tier .btn { margin-top: auto; justify-content: center; }
.tier .desc { font-size: 14px; color: var(--fg-muted); min-height: 42px; }

/* ---------- Research ---------- */
.research-list {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.research-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--rule-c);
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
}
.research-item:last-child { border-bottom: 0; }
.research-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  padding-top: 4px;
}
.research-item h3 { font-size: 22px; margin-bottom: 10px; max-width: 28ch; }
.research-item .citation {
  font-size: 14px;
  color: var(--fg-muted);
  font-style: italic;
  margin-bottom: 12px;
}
.research-item .impl {
  font-size: 15px;
  color: var(--fg);
  max-width: 60ch;
}
.research-item .impl strong { color: var(--accent); font-weight: 500; font-style: normal; }

/* ---------- Quote ---------- */
.pullquote {
  margin: 60px 0;
  padding: 40px 0;
  border-top: 1px solid var(--rule-c);
  border-bottom: 1px solid var(--rule-c);
  font-family: 'Inter Tight', sans-serif;
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: -0.018em;
  line-height: 1.3;
  text-wrap: balance;
  max-width: 30ch;
}
.pullquote::before { content: "" / ""; }

/* ---------- Section header w/ eyebrow ---------- */
.section-head { margin-bottom: 12px; }
.section-head .eyebrow { display: block; margin-bottom: 18px; color: var(--accent); }

/* ---------- Tech-detail rows (collapsible feel, but always open) ---------- */
.tech-list {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule-c);
  border-radius: 8px;
  overflow: hidden;
}
.tech-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  padding: 24px 28px;
  border-bottom: 1px solid var(--rule-c);
  gap: 28px;
  background: var(--bg);
  transition: background 160ms ease;
}
.tech-row:last-child { border-bottom: 0; }
.tech-row:hover { background: var(--soft); }
.tech-row .label {
  font-family: 'Inter Tight', sans-serif;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.012em;
}
.tech-row .body { color: var(--fg-muted); font-size: 15px; }
@media (max-width: 700px) {
  .tech-row { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 700ms ease, transform 700ms ease;
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Tweaks panel host overrides ---------- */
.tweaks-host { z-index: 1000; }

/* ---------- Logos strip ---------- */
.logos-strip {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 32px;
  opacity: 0.7;
}
.logos-strip .logo {
  font-family: 'Inter Tight', sans-serif;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--fg-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.logos-strip .logo::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 1px;
  background: var(--fg-muted);
  opacity: 0.5;
}