/* ============================================================
   DIVU — Shared design system
   Tokens + layout + components used by every static page.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:ital,wght@0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,200;1,300;1,400;1,600;1,700&display=swap');

:root {
  --divu-forest:   #223b34;
  --divu-lime:     #61e965;
  --divu-lime-600: #3bc93f;
  --divu-indigo:   #6060e1;
  --divu-indigo-300: #9a9aee;
  --divu-indigo-50:  #eeeefc;
  --divu-mist:     #e8f1e7;
  --divu-ink:      #0e1a16;
  --divu-slate:    #3d5249;
  --divu-fog:      #7a8a83;
  --divu-haze:     #b9c4bf;
  --divu-cloud:    #d8e1dc;
  --divu-paper:    #f6faf5;
  --font-display:"Nunito Sans", "Avenir Next", ui-sans-serif, system-ui, sans-serif;
  --font-sans:   "Nunito Sans", "Avenir Next", ui-sans-serif, system-ui, sans-serif;
  --font-mono:   "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --ease-standard: cubic-bezier(0.2, 0.0, 0.0, 1.0);
  --border-subtle: rgba(34, 59, 52, 0.08);
  --border-default: rgba(34, 59, 52, 0.16);
}

html, body {
  margin: 0; padding: 0;
  background: var(--divu-mist);
  color: var(--divu-forest);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
body { width: 100%; overflow-x: hidden; }
*, *::before, *::after { box-sizing: border-box; }
img, svg { max-width: 100%; }

/* While the active language is still being applied, keep the page hidden to
   avoid an English flash. i18n.js removes the class (with a failsafe). */
html.i18n-pending body { visibility: hidden; }

a { color: inherit; text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 160ms; }
a:hover { border-bottom-color: currentColor; }

.eyebrow {
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--divu-slate);
}

.display {
  font-family: var(--font-display);
  font-weight: 200;
  line-height: 1.02;
  letter-spacing: -0.025em;
  text-wrap: balance;
  margin: 0;
  color: var(--divu-forest);
}
.display em {
  font-style: italic;
  font-weight: 300;
  color: var(--divu-lime-600);
}

.section { padding: 120px 64px; }
.wrap { max-width: 1400px; margin: 0 auto; }
.lead-copy {
  color: var(--divu-slate);
  font-size: 17px;
  line-height: 1.65;
  max-width: 720px;
}

/* ---------- Top navigation ---------- */
.top-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 28px 64px;
  gap: 24px;
  color: var(--divu-mist);
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 240ms var(--ease-standard), backdrop-filter 240ms var(--ease-standard), border-color 240ms var(--ease-standard);
}
.top-nav.scrolled {
  background: rgba(14, 26, 22, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: rgba(232, 241, 231, 0.10);
}
.top-nav a {
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--divu-mist);
  opacity: 0.85;
}
.top-nav a:hover { opacity: 1; border-bottom-color: transparent; }
.nav-left, .nav-right { display: flex; gap: 32px; align-items: center; }
.nav-right { justify-content: flex-end; }
.nav-cta {
  background: var(--divu-lime);
  color: var(--divu-forest) !important;
  padding: 10px 20px;
  border-radius: 0;
  display: inline-flex; align-items: center; gap: 8px;
  opacity: 1 !important;
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: 22px;
  letter-spacing: 0.18em;
  line-height: 1;
}

/* Language switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(232,241,231,0.28);
  border-radius: 0;
}
.lang-switch button {
  background: transparent;
  border: 0;
  color: var(--divu-mist);
  opacity: 0.6;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 7px 10px;
  cursor: pointer;
  transition: opacity 160ms, background 160ms, color 160ms;
}
.lang-switch button:hover { opacity: 1; }
.lang-switch button.active {
  background: var(--divu-mist);
  color: var(--divu-ink);
  opacity: 1;
}
.nav-mobile-panel .lang-switch { margin-top: 16px; align-self: flex-start; }

/* Mobile hamburger */
.nav-burger { display: none; background: transparent; border: 0; padding: 8px; cursor: pointer; color: var(--divu-mist); flex-direction: column; gap: 4px; align-self: center; }
.nav-burger span { display: block; width: 22px; height: 2px; background: currentColor; transition: transform 200ms, opacity 200ms; }
.nav-burger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-burger.is-open span:nth-child(2) { opacity: 0; }
.nav-burger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-mobile-panel { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(14,26,22,0.98); backdrop-filter: blur(12px); padding: 8px 24px 24px; border-top: 1px solid rgba(232,241,231,0.1); z-index: 100; flex-direction: column; }
.nav-mobile-panel.is-open { display: flex; }
.nav-mobile-panel a { color: var(--divu-mist) !important; padding: 14px 0; font-size: 13px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; border-bottom: 1px solid rgba(232,241,231,0.08) !important; text-decoration: none; opacity: 0.85; }
.nav-mobile-panel a:hover { opacity: 1; }

/* ---------- Dark page hero ---------- */
.page-hero {
  background: #0e1a16;
  color: var(--divu-mist);
  position: relative;
  overflow: hidden;
  padding: 40px 64px 120px;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(232,241,231,0.045) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg,  rgba(232,241,231,0.045) 0 1px, transparent 1px 64px);
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 640px 420px at 95% 10%, rgba(96,96,225,0.28), transparent 70%),
    radial-gradient(ellipse 580px 420px at 5% 100%, rgba(97,233,101,0.12), transparent 70%);
  pointer-events: none;
}
.page-hero-inner {
  position: relative;
  max-width: 1400px;
  margin: 104px auto 0;
}
.page-hero .eyebrow { color: var(--divu-lime); }
.page-hero .display { color: #F2F6EE; }
.page-hero .display em { color: var(--divu-lime); }
.page-hero p.lead {
  max-width: 720px;
  font-size: 20px;
  line-height: 1.55;
  color: rgba(232,241,231,0.8);
  margin-top: 32px;
}
.hero-cta-row {
  position: relative;
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-top: 40px;
}
.hero-microcopy {
  position: relative;
  margin-top: 24px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(232,241,231,0.55);
}

/* ---------- Buttons ---------- */
.btn-primary {
  background: var(--divu-lime);
  color: var(--divu-forest) !important;
  border: 0;
  padding: 14px 24px;
  border-radius: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
  box-shadow: 0 6px 24px rgba(97,233,101,0.3);
  border-bottom: 0 !important;
  cursor: pointer;
}
.btn-ghost {
  background: transparent;
  color: var(--divu-mist) !important;
  border: 1px solid rgba(232,241,231,0.22);
  padding: 13px 22px;
  border-radius: 0;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
  cursor: pointer;
}
.btn-outline-dark {
  background: transparent;
  color: var(--divu-forest) !important;
  border: 1px solid var(--border-default);
  padding: 13px 22px;
  border-radius: 0;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
  cursor: pointer;
}

/* ---------- Generic content components ---------- */
.section-head { max-width: 820px; }
.section-head .display { font-size: clamp(36px, 4.5vw, 60px); margin-top: 20px; }
.section-head .lead-copy { margin-top: 24px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: #fff;
  border: 1px solid var(--border-subtle);
  border-radius: 2px;
  padding: 32px;
}
.card h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 19px;
  margin: 0 0 10px;
  color: var(--divu-forest);
}
.card p { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--divu-slate); }

.card-dark {
  background: var(--divu-forest);
  color: var(--divu-mist);
  border-radius: 2px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}
.card-dark::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(232,241,231,0.035) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg,  rgba(232,241,231,0.035) 0 1px, transparent 1px 48px);
  pointer-events: none;
}
.card-dark > * { position: relative; }
.card-dark h3 {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: 30px;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  color: #fff;
}
.card-dark p { color: rgba(232,241,231,0.78); font-size: 15px; line-height: 1.6; margin: 0; }
.card-dark.indigo { background: var(--divu-indigo); }
.card-dark.indigo p { color: rgba(255,255,255,0.85); }

.step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--divu-indigo);
  font-weight: 600;
  margin-bottom: 14px;
}

/* Definition rows: term + plain-language meaning */
.def-list { display: flex; flex-direction: column; border-top: 1px solid var(--border-default); }
.def-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border-default);
  align-items: baseline;
}
.def-term {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  color: var(--divu-forest);
}
.def-body { font-size: 15px; line-height: 1.6; color: var(--divu-slate); margin: 0; }

/* Arrow bullet list */
.arrow-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.arrow-list li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 14px;
  align-items: start;
  font-size: 15px;
  line-height: 1.55;
  color: var(--divu-slate);
}
.arrow-list li::before {
  content: '→';
  color: var(--divu-lime-600);
  font-weight: 700;
  margin-top: 1px;
}

/* Numbered list */
.num-list { list-style: none; padding: 0; margin: 0; counter-reset: numlist; display: flex; flex-direction: column; gap: 16px; }
.num-list li {
  counter-increment: numlist;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 16px;
  align-items: start;
  font-size: 15px;
  line-height: 1.6;
  color: var(--divu-slate);
}
.num-list li::before {
  content: counter(numlist, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--divu-indigo);
  font-weight: 600;
  margin-top: 3px;
}

/* Output strip (labelled microcopy under a step) */
.output-strip {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--divu-fog);
}
.output-strip strong { color: var(--divu-indigo); margin-right: 8px; }

/* Dark CTA band */
.cta-band {
  background: var(--divu-ink);
  color: var(--divu-mist);
  position: relative;
  overflow: hidden;
  padding: 110px 64px;
  text-align: center;
}
.cta-band::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 640px 420px at 80% 0%, rgba(96,96,225,0.25), transparent 70%),
    radial-gradient(ellipse 580px 420px at 10% 100%, rgba(97,233,101,0.12), transparent 70%);
  pointer-events: none;
}
.cta-band .display { color: #F2F6EE; font-size: clamp(36px, 5vw, 68px); }
.cta-band p { color: rgba(232,241,231,0.75); font-size: 17px; max-width: 620px; margin: 24px auto 0; position: relative; }
.cta-band .hero-cta-row { justify-content: center; }

/* Inline text link with arrow */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--divu-indigo);
  border-bottom: 0;
}
.text-link:hover { border-bottom: 0; text-decoration: underline; text-underline-offset: 4px; }

/* ---------- Footer ---------- */
.footer {
  background: #0e1a16;
  color: rgba(232,241,231,0.55);
  padding: 64px 64px 36px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand {
  text-transform: none;
  letter-spacing: normal;
  color: rgba(232,241,231,0.55);
  font-weight: 400;
  font-size: 14px;
  line-height: 1.6;
  max-width: 320px;
}
.footer h4 {
  color: var(--divu-lime);
  margin: 0 0 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.footer ul a {
  text-transform: none;
  letter-spacing: normal;
  font-weight: 400;
  font-size: 14px;
  color: rgba(232,241,231,0.7);
}
.footer ul a:hover { color: var(--divu-lime); border-bottom-color: transparent; }
.footer-copy {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(232,241,231,0.1);
  padding-top: 24px;
  margin-top: 48px;
  font-size: 11px;
}
.footer-copy a {
  color: rgba(232,241,231,0.55);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  transition: color 160ms;
}
.footer-copy a:hover { color: var(--divu-lime); border-bottom-color: transparent; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .nav-left, .nav-right { gap: 20px; }
}
@media (max-width: 768px) {
  .nav-burger { display: flex; }
  .section { padding: 64px 24px; }
  .page-hero { padding: 16px 24px 64px; }
  .page-hero-inner { margin-top: 68px; }
  .page-hero p.lead { font-size: 16px; margin-top: 24px; }
  .top-nav { grid-template-columns: auto 1fr auto; padding: 16px 20px; gap: 12px; }
  .nav-left a, .nav-right a:not(.nav-cta) { display: none; }
  .nav-right .lang-switch { display: none; }
  .nav-cta { padding: 8px 14px; font-size: 10px; }
  .wordmark { font-size: 18px; }
  .footer { padding: 48px 24px 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-copy { flex-direction: column; align-items: flex-start; gap: 16px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .def-row { grid-template-columns: 1fr; gap: 8px; }
  .card-dark { padding: 28px; }
  .cta-band { padding: 72px 24px; }
  .display { font-size: clamp(32px, 6vw, 56px) !important; }
}
@media (max-width: 480px) {
  .section { padding: 48px 16px; }
  .page-hero { padding: 12px 16px 48px; }
  .footer { padding: 40px 16px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
}