/* ── Datistica Landing Page ── */

:root {
  --white: #FFFFFF;
  --ink: #111111;
  --accent: #1A3C6E;
  --hairline: #E5E5E5;
  --muted: #666666;
  --surface: #FAFAFA;
  --surface-dark: #0A0A0A;
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", Consolas, monospace;
  --max-width: 960px;
  --content-width: 720px;
  --nav-height: 72px;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: -0.01em;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.3s var(--ease);
}

a:hover {
  opacity: 0.7;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 24px;
  border-radius: 2px;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), opacity 0.3s var(--ease);
  text-decoration: none;
}

.btn:hover {
  opacity: 1;
}

.btn--primary {
  background: var(--ink);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--accent);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline);
}

.btn--ghost:hover {
  border-color: var(--ink);
}

.btn--light {
  background: var(--white);
  color: var(--ink);
}

.btn--light:hover {
  background: var(--accent);
  color: var(--white);
}

/* ── Header / Nav ── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--hairline);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: calc(var(--max-width) + 80px);
  margin: 0 auto;
  padding: 0 40px;
  height: var(--nav-height);
}

.nav__mark {
  width: 36px;
  height: 36px;
  border-radius: 2px;
  object-fit: cover;
}

.nav__wordmark {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.nav__brand:hover {
  opacity: 0.8;
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__links {
  display: flex;
  list-style: none;
  gap: 24px;
}

.nav__links a {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

.nav__links a:hover {
  opacity: 0.6;
}

.nav__cta {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--white) !important;
  padding: 10px 18px;
  border-radius: 2px;
  opacity: 1 !important;
  transition: background 0.3s var(--ease);
}

.nav__cta:hover {
  background: var(--accent);
  opacity: 1 !important;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 4px 0;
}

.lang-toggle__opt {
  transition: color 0.3s var(--ease);
}

.lang-toggle__opt--active {
  color: var(--ink);
}

.lang-toggle__sep {
  opacity: 0.4;
}

/* ── Layout bands ── */

.band {
  width: 100%;
}

.band--light {
  background: var(--surface);
}

.band--dark {
  background: var(--surface-dark);
  color: var(--white);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 96px 40px;
}

.section--wide {
  max-width: calc(var(--max-width) + 80px);
}

.section--compact {
  padding: 64px 40px;
}

.section__label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

.section__lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 48px;
  max-width: 560px;
}

/* ── Hero ── */

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + 80px) 40px 80px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 64px;
  align-items: center;
}

.hero__eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero__headline {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 6vw, 4rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 28px;
}

.hero__manifesto {
  font-size: 18px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__art {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: 2px;
}

/* ── Pillars (mission band) ── */

.pillars {
  background: var(--surface);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 64px 40px;
}

.pillars__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.pillar__tag {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}

.pillar__title {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.pillar__tagline {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--ink);
  margin-bottom: 10px;
}

.pillar__text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

.pillars__intro {
  max-width: var(--max-width);
  margin: 0 auto 48px;
}

.pillars__lead {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 12px;
}

.pillars__sublead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 520px;
}

/* ── Manifesto band ── */

.manifesto-band {
  padding: 72px 40px;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.manifesto-band__text {
  max-width: var(--content-width);
  margin: 0 auto;
  font-family: var(--serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 500;
  font-style: normal;
  line-height: 1.4;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-align: center;
}

/* ── Split layout (text + image) ── */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 64px;
}

.pullquote {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 28px;
}

.prose p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  margin-bottom: 1.25em;
}

.prose p:last-child {
  margin-bottom: 0;
}

.split__figure {
  margin: 0;
}

/* ── Gap diagram (inline SVG) ── */

.gap-diagram {
  margin: 0;
}

.gap-diagram__svg {
  width: 100%;
  height: auto;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: var(--white);
}

/* ── Methods ── */

.methods {
  padding-top: 48px;
  border-top: 1px solid var(--hairline);
}

.methods__lead {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
}

.methods__list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.methods__list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 24px 20px 0;
  border-bottom: 1px solid var(--hairline);
}

.methods__list li:nth-child(odd) {
  padding-right: 32px;
  border-right: 1px solid var(--hairline);
}

.methods__list li:nth-child(even) {
  padding-left: 32px;
}

.methods__list li:nth-last-child(-n+2) {
  border-bottom: none;
}

.methods__name {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink);
}

.methods__desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.methods__list li:nth-last-child(1):nth-child(odd) {
  border-bottom: none;
}

/* ── How we're different ── */

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.diff-card {
  padding: 32px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: var(--white);
}

.diff-card__title {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 12px;
}

.diff-card__text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

.section__intro {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 32px;
}

.sectors-note {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  margin-top: 32px;
}

.sectors-note a {
  color: var(--accent);
}

/* ── Research ── */

.research-tease__headline {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.research-tease__status {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  margin-top: 16px;
}

/* ── Careers ── */

.careers-oneliner {
  font-family: var(--serif);
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--ink);
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--hairline);
}

/* ── About / founders ── */

.founders__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.founders__name {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink);
  display: block;
  margin-bottom: 4px;
}

.founders__bio {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

/* ── Business lines ── */

.lines {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.line-card {
  padding: 32px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: var(--white);
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s var(--ease);
}

.line-card:hover {
  border-color: var(--accent);
}

.line-card__visual {
  width: 80px;
  height: 80px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.line-card__visual svg {
  width: 64px;
  height: 64px;
}

.line-card__title {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 12px;
}

.line-card__text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  flex: 1;
  margin-bottom: 20px;
}

.line-card__link {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ── Sectors grid ── */

.sectors-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.sector-card {
  padding: 28px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  transition: border-color 0.3s var(--ease);
}

.sector-card:hover {
  border-color: var(--accent);
}

.sector-card__name {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.sector-card__text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

/* ── Research tease ── */

.research-tease {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.research-tease__lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 520px;
  margin-top: 8px;
}

/* ── Dark CTA ── */

.cta-dark {
  padding: 96px 40px;
}

.cta-dark__inner {
  max-width: var(--content-width);
  margin: 0 auto;
  text-align: center;
}

.cta-dark__wordmark {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 32px;
}

.cta-dark__headline {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.cta-dark__text {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
  max-width: 520px;
  margin: 0 auto 36px;
}

.cta-dark__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.cta-dark__micro {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.4);
}

.btn--ghost-on-dark {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn--ghost-on-dark:hover {
  border-color: var(--white);
}

/* ── Footer ── */

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 64px 40px 40px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__tagline {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 12px;
}

.footer__wordmark {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.footer__location {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.footer__heading {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.footer__col p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.footer__col a {
  color: var(--ink);
}

.footer__copy {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  opacity: 0.6;
  padding-top: 32px;
  border-top: 1px solid var(--hairline);
}

/* ── Scroll reveal ── */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.12s; }
.reveal--delay-2 { transition-delay: 0.24s; }
.reveal--delay-3 { transition-delay: 0.36s; }

.hero .reveal {
  opacity: 0;
  transform: translateY(20px);
}

.hero .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */

@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero__visual {
    order: -1;
  }

  .hero__art {
    max-width: 280px;
    margin: 0 auto;
  }

  .pillars__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .methods__list {
    grid-template-columns: 1fr;
  }

  .methods__list li:nth-child(odd) {
    padding-right: 0;
    border-right: none;
  }

  .methods__list li:nth-child(even) {
    padding-left: 0;
  }

  .methods__list li:nth-last-child(-n+2) {
    border-bottom: 1px solid var(--hairline);
  }

  .methods__list li:last-child {
    border-bottom: none;
  }

  .lines {
    grid-template-columns: 1fr;
  }

  .sectors-grid {
    grid-template-columns: 1fr;
  }

  .diff-grid {
    grid-template-columns: 1fr;
  }

  .research-tease {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .nav {
    padding: 0 20px;
    height: 64px;
  }

  .nav__links {
    display: none;
  }

  .nav__right {
    gap: 12px;
  }

  .nav__cta {
    padding: 8px 14px;
    font-size: 10px;
  }

  .hero,
  .section,
  .pillars,
  .manifesto-band,
  .cta-dark {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero {
    padding-top: calc(var(--nav-height) + 48px);
    padding-bottom: 56px;
  }

  .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .line-card {
    padding: 24px;
  }
}

/* ── Reduced motion ── */

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

  .reveal,
  .hero .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}