/* Babylon Consulting — Identity v2 (Babylon Blue) */

:root {
  /* New Babylon palette */
  --babylon:       #14284A;
  --babylon-dark:  #0E1D38;
  --lapis:         #2C4870;
  --stone:         #FBFBF9;
  --paper:         #FFFFFF;
  --gray-50:       #F8F9FB;
  --gray-100:      #F3F4F6;
  --gray-200:      #E5E7EB;
  --gray-300:      #D1D5DB;
  --gray-400:      #9CA3AF;
  --gray-500:      #6B7280;
  --gray-600:      #4B5563;
  --gray-700:      #374151;
  --ink:           #1F2937;
  --gold:          #B89B5E;

  /* Legacy aliases (used by inline styles in some HTML files) */
  --ivory:         var(--babylon);
  --copper:        var(--babylon);
  --ivory-dim:     var(--gray-500);
  --ivory-faint:   var(--gray-400);
  --ink-line:      var(--gray-200);
  --ink-2:         var(--stone);
  --ink-3:         var(--gray-100);
  --copper-deep:   var(--babylon-dark);
  --copper-bright: var(--lapis);
  --sand:          var(--gray-200);

  /* Sizing */
  --section-pad: 140px 64px;
  --max-w: 1280px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--stone);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* Typography */
h1, h2, h3, h4 {
  font-family: 'Source Serif 4', 'Source Serif Pro', 'Georgia', serif;
  font-weight: 400;
  letter-spacing: -0.012em;
  color: var(--ink);
}
h1 { font-size: clamp(40px, 5vw, 72px); line-height: 1.06; }
h2 { font-size: clamp(28px, 3.4vw, 48px); line-height: 1.14; }
h3 { font-size: clamp(20px, 1.8vw, 26px); line-height: 1.3; font-weight: 500; color: var(--babylon); }
h4 { font-size: 17px; line-height: 1.4; font-weight: 600; color: var(--babylon); }

p { color: var(--gray-700); max-width: 64ch; }
p + p { margin-top: 1em; }

em.italic { font-style: italic; font-family: 'Source Serif 4', serif; color: var(--babylon); }
.copper { color: var(--babylon); }
.ivory-dim { color: var(--gray-500); }

.eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--babylon);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--babylon);
}

/* Layout */
.container { max-width: var(--max-w); margin: 0 auto; }
.section { padding: var(--section-pad); position: relative; }
.section-sm { padding: 96px 64px; }
.divider { height: 1px; background: var(--gray-200); width: 100%; }

.grid { display: grid; gap: 32px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(251, 251, 249, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gray-200);
  transition: background 0.3s var(--ease);
}
.nav-brand {
  font-family: 'Source Serif 4', serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--babylon);
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-brand-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 42 42'><rect x='2' y='33' width='38' height='6' fill='%2314284A'/><rect x='6' y='24' width='30' height='7' fill='%2314284A'/><rect x='11' y='14' width='20' height='8' fill='%2314284A'/><rect x='15' y='3' width='12' height='9' fill='%2314284A'/></svg>");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  border: none;
  border-radius: 0;
}
.nav-brand-mark::before,
.nav-brand-mark::after { display: none; }
.nav-brand small {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gray-500);
  display: block;
  margin-top: 3px;
}

.nav-links {
  display: flex;
  gap: 40px;
  align-items: center;
}
.nav-links a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--gray-700);
  transition: color 0.2s var(--ease);
  position: relative;
}
.nav-links a:hover,
.nav-links a.active { color: var(--babylon); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--babylon);
}

.nav-cta {
  padding: 10px 22px;
  border: 1.5px solid var(--babylon);
  color: var(--babylon);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  transition: all 0.25s var(--ease);
}
.nav-cta:hover {
  background: var(--babylon);
  color: var(--stone);
}

.nav-burger { display: none; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 30px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  transition: all 0.25s var(--ease);
  border: 1.5px solid transparent;
}
.btn-primary {
  background: var(--babylon);
  color: var(--stone);
  border-color: var(--babylon);
}
.btn-primary:hover {
  background: var(--babylon-dark);
  border-color: var(--babylon-dark);
  transform: translateY(-1px);
}
.btn-ghost {
  border-color: var(--babylon);
  color: var(--babylon);
}
.btn-ghost:hover {
  background: var(--babylon);
  color: var(--stone);
}
.btn .arrow {
  width: 22px;
  height: 1.5px;
  background: currentColor;
  position: relative;
}
.btn .arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -3px;
  width: 8px;
  height: 8px;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
}

/* Hero */
.hero {
  min-height: 100vh;
  padding: 180px 64px 120px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--stone);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 30%, rgba(20, 40, 74, 0.06), transparent 50%),
    radial-gradient(circle at 82% 70%, rgba(20, 40, 74, 0.04), transparent 55%);
  pointer-events: none;
}
.hero-globe {
  position: absolute;
  right: -120px;
  top: 50%;
  transform: translateY(-50%);
  width: 720px;
  height: 720px;
  opacity: 0.10;
  pointer-events: none;
}
.hero-globe circle,
.hero-globe ellipse,
.hero-globe line {
  stroke: var(--babylon) !important;
}
.hero-globe circle[fill] {
  fill: var(--babylon) !important;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.hero h1 {
  margin: 24px 0 32px;
  max-width: 18ch;
}
.hero-lede {
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.65;
  color: var(--gray-700);
  max-width: 60ch;
  margin-bottom: 48px;
}
.hero-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

/* Page Hero (inner pages) */
.page-hero {
  padding: 180px 64px 100px;
  background: var(--stone);
  border-bottom: 1px solid var(--gray-200);
  position: relative;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(20, 40, 74, 0.05), transparent 50%);
  pointer-events: none;
}
.page-hero > * { position: relative; z-index: 2; }
.page-hero .eyebrow { margin-bottom: 20px; }
.page-hero h1 { max-width: 20ch; margin-bottom: 28px; }
.page-hero p { font-size: 18px; line-height: 1.6; color: var(--gray-700); }

/* Cards */
.card {
  padding: 40px 36px;
  background: var(--paper);
  border: 1px solid var(--gray-200);
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--babylon);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.card:hover {
  border-color: var(--babylon);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(20, 40, 74, 0.08);
}
.card:hover::before { transform: scaleX(1); }
.card-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: var(--babylon);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 22px;
  display: block;
}
.card h3 { margin-bottom: 14px; color: var(--ink); font-weight: 500; }
.card p { font-size: 15px; color: var(--gray-700); }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 22px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--babylon);
}

/* Sector Card (large, horizontal) */
.sector-row {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 48px;
  align-items: flex-start;
  padding: 48px 0;
  border-bottom: 1px solid var(--gray-200);
  transition: padding 0.3s var(--ease);
}
.sector-row:hover { padding-left: 12px; }
.sector-row:hover .sector-icon { color: var(--lapis); }
.sector-icon {
  font-family: 'Source Serif 4', serif;
  font-style: italic;
  font-size: 42px;
  font-weight: 500;
  color: var(--babylon);
  line-height: 1;
  transition: color 0.3s var(--ease);
}
.sector-body h3 {
  margin-bottom: 14px;
  font-size: 30px;
  color: var(--ink);
  font-weight: 500;
}
.sector-body p { font-size: 15px; max-width: 68ch; color: var(--gray-700); }
.sector-body ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  list-style: none;
  margin-top: 22px;
}
.sector-body li {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-600);
  padding-left: 14px;
  position: relative;
}
.sector-body li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 2px;
  background: var(--babylon);
}

/* Thesis / Feature block */
.thesis {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 96px;
  align-items: start;
}
.thesis h2 { margin-bottom: 32px; }
.thesis p { font-size: 17px; line-height: 1.75; color: var(--gray-700); }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 2px solid var(--babylon);
  border-bottom: 2px solid var(--babylon);
  background: var(--paper);
}
.stat {
  padding: 48px 32px;
  border-right: 1px solid var(--gray-200);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: 'Source Serif 4', serif;
  font-size: 48px;
  font-weight: 500;
  color: var(--babylon);
  line-height: 1.05;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-500);
}

/* Approach / Process */
.approach {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 64px;
}
.step {
  padding: 36px 28px 36px 0;
  border-top: 3px solid var(--babylon);
  position: relative;
}
.step-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--babylon);
  margin-bottom: 22px;
  display: block;
}
.step h4 {
  font-family: 'Source Serif 4', serif;
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 12px;
}
.step p { font-size: 14px; color: var(--gray-700); }

/* CTA band */
.cta-band {
  padding: 110px 64px;
  text-align: center;
  background: var(--babylon);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  color: var(--stone);
  position: relative;
}
.cta-band .eyebrow {
  color: rgba(251, 251, 249, 0.85);
}
.cta-band .eyebrow::before {
  background: rgba(251, 251, 249, 0.85);
}
.cta-band h2 {
  max-width: 24ch;
  margin: 0 auto 28px;
  color: var(--stone);
}
.cta-band em.italic { color: var(--gold); }
.cta-band p {
  max-width: 60ch;
  margin: 0 auto 38px;
  font-size: 17px;
  color: rgba(251, 251, 249, 0.82);
}
.cta-band .btn-primary {
  background: var(--stone);
  color: var(--babylon);
  border-color: var(--stone);
}
.cta-band .btn-primary:hover {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--babylon-dark);
}

/* Form */
.form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 820px;
}
.form .field-full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-600);
  margin-bottom: 10px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--gray-300);
  color: var(--ink);
  font-family: inherit;
  font-size: 15px;
  transition: border-color 0.2s var(--ease);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--babylon);
  box-shadow: 0 0 0 3px rgba(20, 40, 74, 0.08);
}
.field textarea { min-height: 160px; resize: vertical; }
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'><path fill='%2314284A' d='M6 8L0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 18px center;
  background-size: 10px;
  padding-right: 44px;
}

/* Footer */
.footer {
  padding: 80px 64px 36px;
  background: var(--babylon);
  color: rgba(251, 251, 249, 0.78);
  border-top: 1px solid var(--gray-200);
}
.footer .nav-brand {
  color: var(--stone);
}
.footer .nav-brand-mark {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 42 42'><rect x='2' y='33' width='38' height='6' fill='%23FBFBF9'/><rect x='6' y='24' width='30' height='7' fill='%23FBFBF9'/><rect x='11' y='14' width='20' height='8' fill='%23FBFBF9'/><rect x='15' y='3' width='12' height='9' fill='%23FBFBF9'/></svg>");
}
.footer .nav-brand small {
  color: rgba(251, 251, 249, 0.62);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer h5 {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: 20px;
}
.footer ul { list-style: none; }
.footer li { margin-bottom: 12px; }
.footer a {
  color: rgba(251, 251, 249, 0.78);
  font-size: 14px;
  transition: color 0.2s var(--ease);
}
.footer a:hover { color: var(--stone); }
.footer-brand p {
  font-size: 13px;
  line-height: 1.7;
  margin-top: 18px;
  max-width: 34ch;
  color: rgba(251, 251, 249, 0.72);
}
.footer-bottom {
  max-width: var(--max-w);
  margin: 56px auto 0;
  padding-top: 28px;
  border-top: 1px solid rgba(251, 251, 249, 0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: rgba(251, 251, 249, 0.6);
  letter-spacing: 0.08em;
}
.footer-bottom a {
  color: rgba(251, 251, 249, 0.7);
  font-size: 12px;
}
.footer-bottom a:hover { color: var(--stone); }

/* Legal / Long-form prose */
.prose {
  max-width: 780px;
  margin: 0 auto;
}
.prose h3 {
  font-size: 22px;
  color: var(--babylon);
  margin: 48px 0 16px;
  font-family: 'Source Serif 4', serif;
  font-weight: 600;
}
.prose p { margin-bottom: 16px; font-size: 15px; color: var(--gray-700); }
.prose ul { margin: 14px 0 20px 22px; color: var(--gray-700); }
.prose li { margin-bottom: 8px; font-size: 15px; line-height: 1.7; }
.prose a { color: var(--babylon); border-bottom: 1px solid var(--babylon); }
.prose a:hover { color: var(--lapis); border-bottom-color: var(--lapis); }
.prose strong { color: var(--ink); font-weight: 600; }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal.delay-1 { transition-delay: 0.08s; }
.reveal.delay-2 { transition-delay: 0.16s; }
.reveal.delay-3 { transition-delay: 0.24s; }

/* Responsive */
@media (max-width: 1024px) {
  :root { --section-pad: 100px 40px; }
  .nav { padding: 16px 40px; }
  .hero { padding: 150px 40px 80px; }
  .page-hero { padding: 150px 40px 80px; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--gray-200); }
  .thesis { grid-template-columns: 1fr; gap: 48px; }
  .approach { grid-template-columns: repeat(2, 1fr); }
  .hero-globe { width: 520px; height: 520px; right: -200px; opacity: 0.08; }
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  :root { --section-pad: 72px 22px; }
  body { font-size: 15px; }
  h1 { letter-spacing: -0.018em; }
  .nav { padding: 14px 22px; }
  .nav-brand { font-size: 19px; }
  .nav-brand-mark { width: 26px; height: 26px; }
  .nav-brand small { font-size: 9px; letter-spacing: 0.28em; }
  .nav-links { display: none; }
  .nav-burger {
    display: flex; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px;
  }
  .nav-burger span {
    display: block; width: 22px; height: 2px; background: var(--babylon);
  }
  .nav-links.open {
    display: flex; position: fixed; top: 60px; left: 0; right: 0;
    background: var(--stone); flex-direction: column; gap: 0;
    padding: 24px 0; border-bottom: 1px solid var(--gray-200);
  }
  .nav-links.open a { padding: 14px 24px; }
  .nav-links.open .nav-cta { margin: 12px 24px; text-align: center; }
  .hero { padding: 130px 22px 56px; }
  .hero h1 { max-width: none; }
  .hero-lede { margin-bottom: 36px; font-size: 16px; }
  .hero-actions { gap: 12px; }
  .hero-actions .btn { width: 100%; justify-content: center; padding: 16px 20px; }
  .hero-globe { display: none; }
  .page-hero { padding: 130px 22px 56px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid { gap: 20px; }
  .card { padding: 32px 24px; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid var(--gray-200); padding: 36px 24px; }
  .stat:last-child { border-bottom: none; }
  .stat-num { font-size: 38px; }
  .approach { grid-template-columns: 1fr; margin-top: 40px; }
  .sector-row {
    grid-template-columns: 1fr; gap: 14px; padding: 32px 0;
  }
  .sector-row:hover { padding-left: 0; }
  .sector-row > .sector-icon:last-child { display: none; }
  .sector-body h3 { font-size: 24px; }
  .sector-body ul { gap: 8px 16px; margin-top: 16px; }
  .form { grid-template-columns: 1fr; gap: 18px; }
  .field input, .field select, .field textarea { font-size: 16px; padding: 14px 16px; }
  .field textarea { min-height: 140px; }
  .footer { padding: 56px 22px 28px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .cta-band { padding: 72px 22px; }
  .cta-band .btn { width: 100%; justify-content: center; }
  .btn { padding: 14px 22px; font-size: 11px; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
}

/* Prevent horizontal overflow on all devices */
html, body { max-width: 100vw; overflow-x: hidden; }
img, svg { max-width: 100%; }

/* Larger tap targets */
.nav-links a, .btn { min-height: 44px; }
.nav-burger { min-width: 44px; min-height: 44px; align-items: center; justify-content: center; }