/* ============================================
   JBC — Ground Truth for Big Data
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@300;400;500;600&family=Oswald:wght@500;600;700&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
  /* Palette */
  --ink: #0A0B0D;
  --ink-2: #111317;
  --ink-3: #181B21;
  --ink-4: #22262E;
  --line: #2A2E37;
  --line-2: #3A3F4A;
  --fog: #6B7280;
  --bone: #E8E6DF;
  --paper: #F5F3EC;

  --lime: #C5F84A;
  --lime-2: #A8E020;
  --cyan: #5EE7FF;
  --orange: #FF6B35;

  /* Type */
  --display: 'Space Grotesk', sans-serif;
  --serif: 'Instrument Serif', serif;
  --mono: 'JetBrains Mono', monospace;

  /* Density */
  --pad-x: clamp(20px, 4vw, 64px);
  --section-y: clamp(80px, 10vw, 160px);
  --gap: 24px;

  --radius: 14px;
  --radius-lg: 20px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-density="compact"] {
  --pad-x: clamp(16px, 3vw, 40px);
  --section-y: clamp(56px, 6vw, 96px);
  --gap: 16px;
}

[data-density="spacious"] {
  --pad-x: clamp(24px, 5vw, 96px);
  --section-y: clamp(120px, 14vw, 240px);
  --gap: 32px;
}

[data-typography="editorial"] {
  --display: 'Instrument Serif', serif;
}
[data-typography="mono"] {
  --display: 'JetBrains Mono', monospace;
}

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

html, body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--display);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "ss02";
  scroll-behavior: smooth;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img, svg { display: block; max-width: 100%; }

/* ====== Background grain + mesh ====== */
.bg-grain::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ====== Layout ====== */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
  position: relative;
}

/* ====== Nav ====== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(10,11,13,0.85), rgba(10,11,13,0.4) 70%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.nav.scrolled {
  border-bottom-color: var(--line);
  background: rgba(10,11,13,0.92);
}
.nav-brand {
  font-family: 'Oswald', sans-serif;
  font-weight: 700;
  color: var(--bone);
  display: flex;
  align-items: center;
  gap: 6px;
  text-transform: none;
  line-height: 1;
  height: 38px;
}
.nav-brand img { height: 100%; width: auto; }
.nav-brand .wordmark {
  font-family: 'Oswald', sans-serif;
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0;
  display: inline-flex;
  align-items: center;
  height: 100%;
  transform: scaleY(1.05) scaleX(0.78);
  transform-origin: left center;
}
.nav-brand-mark {
  width: 28px; height: 28px;
  position: relative;
}
.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-link {
  padding: 8px 12px 8px 14px;
  font-size: 14px;
  color: var(--bone);
  opacity: 0.7;
  border-radius: 8px;
  transition: all 0.2s var(--ease);
  font-family: var(--mono);
  font-weight: 400;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.nav-link svg { opacity: 0.55; transition: opacity 0.2s var(--ease); }
.nav-link:hover svg { opacity: 1; }
.nav-link.active svg { opacity: 1; }
.nav-link:hover { opacity: 1; background: var(--ink-3); }
.nav-link.active {
  opacity: 1;
  color: var(--lime);
}
.nav-martini {
  display: inline-flex;
  align-items: center;
  margin-left: 4px;
  animation: martini-sway 4s ease-in-out infinite;
  transform-origin: bottom center;
}
@keyframes martini-sway {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(6deg); }
}
[data-anim="off"] .nav-martini { animation: none; }
.nav-cta {
  margin-left: 8px;
}

/* ====== Buttons ====== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  font-weight: 500;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--lime);
  color: var(--ink);
}
.btn-primary:hover {
  background: var(--lime-2);
  transform: translateY(-1px);
}
.btn-ghost {
  border-color: var(--line-2);
  color: var(--bone);
}
.btn-ghost:hover {
  border-color: var(--bone);
  background: var(--ink-3);
}
.btn-arrow {
  transition: transform 0.2s var(--ease);
}
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ====== Type ====== */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fog);
}
.eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 12px var(--lime);
  animation: pulse 2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.h-display {
  font-family: var(--display);
  font-size: clamp(56px, 9vw, 156px);
  font-weight: 500;
  line-height: 0.92;
  letter-spacing: -0.04em;
  text-wrap: balance;
}
.h-display .serif {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.h1 {
  font-size: clamp(40px, 6vw, 88px);
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: -0.03em;
  text-wrap: balance;
}
.h2 {
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.h3 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.lede {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.45;
  color: var(--bone);
  opacity: 0.75;
  max-width: 60ch;
  text-wrap: pretty;
}

.muted { color: var(--fog); }
.accent-lime { color: var(--lime); }
.accent-cyan { color: var(--cyan); }
.accent-orange { color: var(--orange); }

/* ====== Cards & frames ====== */
.card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.card:hover {
  border-color: var(--line-2);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fog);
}
.tag.tag-live {
  border-color: var(--lime);
  color: var(--lime);
}

/* ====== Marquee ====== */
.marquee {
  overflow: hidden;
  position: relative;
  border-block: 1px solid var(--line);
  padding: 18px 0;
}
.marquee-track {
  display: flex;
  gap: 64px;
  animation: scroll 40s linear infinite;
  width: max-content;
}
[data-anim="off"] .marquee-track { animation: none; }
[data-anim="subtle"] .marquee-track { animation-duration: 80s; }
[data-anim="bold"] .marquee-track { animation-duration: 25s; }

@keyframes scroll {
  to { transform: translateX(-50%); }
}
.marquee-item {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--fog);
  white-space: nowrap;
}
.marquee-item .star { color: var(--lime); }

/* ====== Page transitions ====== */
.page {
  display: none;
  animation: fadein 0.5s var(--ease);
}
.page.active { display: block; }
@keyframes fadein {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ====== Footer ====== */
.footer {
  border-top: 1px solid var(--line);
  padding: 80px var(--pad-x) 40px;
  background: var(--ink-2);
}
.footer-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 64px;
}
.footer-col h5 {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fog);
  margin-bottom: 16px;
  font-weight: 400;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 15px; opacity: 0.8; transition: opacity 0.2s; }
.footer-col a:hover { opacity: 1; color: var(--lime); }
.footer-bottom {
  max-width: 1440px;
  margin: 0 auto;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fog);
}

/* ====== Utilities ====== */
.divider {
  height: 1px;
  background: var(--line);
  margin: 0;
}
.flex { display: flex; }
.between { justify-content: space-between; }
.center { align-items: center; }
.gap-sm { gap: 12px; }
.gap-md { gap: 24px; }
.gap-lg { gap: 48px; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}