/* NEXTRON AI — site styles (built on the design-system tokens) */

/* Upgrade the LamboType fallback with a tight industrial neo-grotesk.
   DS tokens keep LamboType first; we insert Archivo before Roboto. */
:root {
  --font-display: 'Archivo', 'Helvetica Neue', 'Arial', sans-serif;
  --font-ui: 'Archivo', 'Helvetica Neue', 'Arial', sans-serif;
  --font-body: 'Archivo', 'Helvetica Neue', 'Arial', sans-serif;
  --maxw: 1280px;
  --gutter: clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-black-absolute);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--color-white-pure); text-decoration: none; transition: color 150ms ease; }
a:hover { color: var(--color-link-blue); }

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

::selection { background: var(--color-gold-primary); color: #000; }

/* ---------- Blueprint grid backdrop (fixed, subtle) ---------- */
.grid-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
}

.app { position: relative; z-index: 1; }

/* ---------- Shared layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section { position: relative; padding: clamp(80px, 12vh, 160px) 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--color-gold-primary);
  font-weight: 600;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--color-gold-primary);
}

.sec-index {
  font-size: 12px; letter-spacing: 2px; color: var(--color-iron);
  text-transform: uppercase;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 400; margin: 0; }

.display {
  text-transform: uppercase;
  line-height: 0.94;
  letter-spacing: -0.5px;
  font-weight: 500;
}
.h-hero { font-size: clamp(44px, 8.5vw, 132px); }
.h-2 { font-size: clamp(34px, 5vw, 72px); line-height: 0.98; }
.h-3 { font-size: clamp(22px, 2.4vw, 34px); line-height: 1.1; }

.lede { font-size: clamp(16px, 1.35vw, 20px); line-height: 1.6; color: var(--color-ash); max-width: 62ch; }
.muted { color: var(--color-ash); }

/* ---------- Buttons (DS-faithful) ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-ui);
  font-size: 14px; letter-spacing: 1.2px; text-transform: uppercase; font-weight: 600;
  border: none; border-radius: 0; cursor: pointer;
  padding: 20px 32px;
  transition: background 160ms ease, color 160ms ease, opacity 160ms ease, transform 120ms ease;
  will-change: transform;
}
.btn-gold { background: var(--color-gold-primary); color: #000; }
.btn-gold:hover { background: var(--color-gold-dark); color: #000; }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.5); }
.btn-ghost:hover { background: var(--color-teal-action); color: #000; border-color: var(--color-teal-action); }
.btn .arrow { transition: transform 200ms ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Reveal animation engine ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 900ms cubic-bezier(.16,1,.3,1), transform 900ms cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 80ms; }
.reveal.d2 { transition-delay: 160ms; }
.reveal.d3 { transition-delay: 240ms; }
.reveal.d4 { transition-delay: 320ms; }
.reveal.d5 { transition-delay: 400ms; }

/* word-mask reveal for the hero */
.line-mask { display: block; overflow: hidden; padding-bottom: 0.12em; margin-bottom: -0.12em; }
.line-mask > span {
  display: block;
  transform: translateY(115%);
  transition: transform 1100ms cubic-bezier(.16,1,.3,1);
}
.hero.in .line-mask > span { transform: none; }
.hero.in .line-mask:nth-child(2) > span { transition-delay: 90ms; }
.hero.in .line-mask:nth-child(3) > span { transition-delay: 180ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .line-mask > span { opacity: 1 !important; transform: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .marquee__track { animation: none !important; }
}

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter);
  transition: background 300ms ease, border-color 300ms ease, padding 300ms ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled { background: rgba(0,0,0,0.72); backdrop-filter: blur(14px); border-bottom-color: var(--color-charcoal); padding-top: 12px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); text-transform: uppercase; letter-spacing: 3px; font-size: 18px; }
.brand .mark { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 30px; align-items: center; flex-wrap: nowrap; }
.nav-links a { font-size: 12px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--color-steel); }
.nav-links a:hover { color: #fff; }
.nav-cta { font-size: 12px !important; letter-spacing: 1.4px; padding: 12px 20px; }
.menu-btn { display: none; }
.nav-drawer {
  position: absolute; top: 100%; left: 0; right: 0;
  background: rgba(0,0,0,0.94); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-charcoal);
  display: flex; flex-direction: column;
  max-height: 0; overflow: hidden; transition: max-height 320ms ease;
}
.nav-drawer.open { max-height: 480px; }
.nav-drawer a { padding: 16px var(--gutter); font-size: 13px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--color-ash); border-top: 1px solid var(--color-charcoal); }
.nav-drawer a:hover { color: #fff; background: var(--color-dark-iron); }
@media (max-width: 1150px) {
  .nav-links { display: none; }
  .menu-btn { display: inline-flex; }
}
@media (min-width: 1151px) { .nav-drawer { display: none; } }
@media (max-width: 560px) { .nav-cta:not(.menu-btn) { display: none; } }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; padding-top: 120px; padding-bottom: 80px; position: relative; }
.hero-lines { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-inner { position: relative; z-index: 2; }
.hero-tag { margin-bottom: 28px; }
.hero-sub { margin-top: 32px; }
.hero-cta { margin-top: 44px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero-scroll { position: absolute; bottom: 34px; left: var(--gutter); display: flex; align-items: center; gap: 12px; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--color-iron); z-index: 2; }
.hero-metrics { display: flex; gap: clamp(28px,5vw,72px); margin-top: 56px; flex-wrap: wrap; }
.metric .num { font-family: var(--font-display); font-size: clamp(30px,3.4vw,46px); color: #fff; }
.metric .lbl { font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--color-steel); margin-top: 6px; }
.metric .num .plus { color: var(--color-gold-primary); }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; border-top: 1px solid var(--color-charcoal); border-bottom: 1px solid var(--color-charcoal); padding: 22px 0; background: var(--color-dark-iron); }
.marquee__track { display: flex; gap: 56px; width: max-content; animation: scroll-x 38s linear infinite; }
.marquee.rev .marquee__track { animation-direction: reverse; }
.marquee__item { display: inline-flex; align-items: center; gap: 56px; font-family: var(--font-display); text-transform: uppercase; font-size: clamp(18px,2vw,28px); color: var(--color-steel); white-space: nowrap; letter-spacing: 1px; }
.marquee__item .dot { width: 7px; height: 7px; background: var(--color-gold-primary); flex: none; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- Who we are split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px,5vw,90px); align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 48px; border-top: 1px solid var(--color-charcoal); padding-top: 32px; }
.stat-row .num { font-family: var(--font-display); font-size: clamp(26px,3vw,40px); }
.stat-row .lbl { font-size: 11px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--color-steel); margin-top: 8px; }

/* ---------- What we build (capability grid) ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--color-charcoal); border: 1px solid var(--color-charcoal); margin-top: 56px; }
@media (max-width: 900px) { .cap-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px) { .cap-grid { grid-template-columns: 1fr; } }
.cap {
  background: var(--color-black-absolute);
  padding: 40px 34px;
  transition: background 260ms ease;
  position: relative; min-height: 230px;
  display: flex; flex-direction: column;
}
.cap:hover { background: var(--color-charcoal); }
.cap .k { font-size: 12px; color: var(--color-iron); letter-spacing: 1.5px; }
.cap .ico { width: 34px; height: 34px; color: var(--color-gold-primary); margin: 6px 0 22px; }
.cap h3 { font-size: 21px; text-transform: uppercase; margin-bottom: 14px; letter-spacing: 0.3px; }
.cap p { font-size: 14.5px; line-height: 1.6; color: var(--color-ash); margin: 0; }
.cap .tags { margin-top: auto; padding-top: 20px; font-size: 11px; letter-spacing: 1px; text-transform: uppercase; color: var(--color-slate); }

/* ---------- Section header ---------- */
.sec-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; margin-bottom: 20px; flex-wrap: wrap; }
.sec-head .lede { margin-top: 20px; }

/* ---------- Engagements ---------- */
.eng { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--color-charcoal); border-top: 1px solid var(--color-charcoal); border-bottom: 1px solid var(--color-charcoal); margin-top: 48px; }
.eng-row {
  background: var(--color-black-absolute);
  display: grid; grid-template-columns: 280px 1fr auto; gap: 40px; align-items: center;
  padding: 40px var(--gutter); cursor: pointer;
  transition: background 240ms ease;
}
.eng-row:hover { background: var(--color-dark-iron); }
.eng-logo { width: 220px; height: 104px; display: flex; align-items: center; justify-content: flex-start; background: transparent; padding: 0; }
.eng-logo.dark { background: transparent; border: none; }
.eng-logo img { max-height: 100%; max-width: 100%; width: auto; height: auto; object-fit: contain; object-position: left center; }
.eng-main .kind { font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--color-gold-primary); }
.eng-main h3 { font-size: clamp(22px,2.4vw,30px); text-transform: uppercase; margin: 8px 0 10px; }
.eng-main p { color: var(--color-ash); font-size: 15px; line-height: 1.6; margin: 0; max-width: 66ch; }
.eng-caps { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chip { font-size: 10.5px; letter-spacing: 0.8px; text-transform: uppercase; color: var(--color-steel); border: 1px solid var(--color-charcoal); padding: 5px 10px; }
.eng-go { color: var(--color-iron); font-family: var(--font-display); font-size: 40px; transition: color 200ms ease, transform 200ms ease; }
.eng-row:hover .eng-go { color: var(--color-gold-primary); transform: translateX(6px); }
@media (max-width: 900px) { .eng-row { grid-template-columns: 1fr; gap: 22px; } .eng-go { display: none; } }

/* expandable detail */
.eng-detail { background: var(--color-dark-iron); overflow: hidden; max-height: 0; transition: max-height 420ms ease; }
.eng-detail.open { max-height: 420px; }
.eng-detail-inner { padding: 34px var(--gutter); display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; border-top: 1px solid var(--color-charcoal); }
@media (max-width: 900px) { .eng-detail.open { max-height: 900px; } .eng-detail-inner { grid-template-columns: 1fr 1fr; } }
.eng-detail .dl { font-size: 11px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--color-gold-primary); margin-bottom: 10px; }
.eng-detail p { font-size: 13.5px; line-height: 1.6; color: var(--color-smoke, #d8d8d8); margin: 0; }

/* ---------- Industries ---------- */
.ind-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--color-charcoal); border: 1px solid var(--color-charcoal); margin-top: 48px; }
@media (max-width: 900px) { .ind-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 520px) { .ind-grid { grid-template-columns: 1fr; } }
.ind {
  background: var(--color-black-absolute); padding: 34px 30px; min-height: 220px;
  display: flex; flex-direction: column; transition: background 240ms ease; position: relative; overflow: hidden;
}
.ind:hover { background: var(--color-charcoal); }
.ind .n { font-size: 12px; color: var(--color-iron); letter-spacing: 1.5px; }
.ind h3 { font-size: 20px; text-transform: uppercase; margin: 16px 0 12px; }
.ind p { font-size: 13.5px; line-height: 1.6; color: var(--color-ash); margin: 0; }
.ind .bar { position: absolute; left: 0; bottom: 0; height: 2px; width: 0; background: var(--color-gold-primary); transition: width 400ms ease; }
.ind:hover .bar { width: 100%; }

/* ---------- Process (pinned) ---------- */
.process { background: var(--color-dark-iron); border-top: 1px solid var(--color-charcoal); }
.process-sticky { position: sticky; top: 0; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.process-track { display: flex; gap: 40px; padding: 0 var(--gutter); transition: transform 700ms cubic-bezier(.22,1,.36,1); will-change: transform; }
.pstep { flex: 0 0 clamp(300px, 40vw, 460px); border-top: 2px solid var(--color-charcoal); padding-top: 28px; transition: border-color 400ms ease, opacity 400ms ease; opacity: 0.4; }
.pstep.active { border-color: var(--color-gold-primary); opacity: 1; }
.pstep .pnum { font-family: var(--font-display); font-size: 64px; color: var(--color-iron); transition: color 400ms ease; }
.pstep.active .pnum { color: var(--color-gold-primary); }
.pstep h3 { font-size: 30px; text-transform: uppercase; margin: 14px 0 16px; }
.pstep p { color: var(--color-ash); font-size: 15px; line-height: 1.65; }
.process-head { position: absolute; top: 60px; left: var(--gutter); right: var(--gutter); display: flex; justify-content: space-between; align-items: baseline; z-index: 3; }
.pbar { position: absolute; left: var(--gutter); right: var(--gutter); bottom: 60px; height: 2px; background: var(--color-charcoal); }
.pbar span { display: block; height: 100%; width: 0; background: var(--color-gold-primary); transition: width 500ms ease; }

/* ---------- Why ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--color-charcoal); border: 1px solid var(--color-charcoal); margin-top: 48px; }
@media (max-width: 900px) { .why-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 520px) { .why-grid { grid-template-columns: 1fr; } }
.why { background: var(--color-black-absolute); padding: 34px 28px; min-height: 190px; transition: background 240ms ease; }
.why:hover { background: var(--color-charcoal); }
.why .n { color: var(--color-gold-primary); font-family: var(--font-display); font-size: 22px; }
.why h3 { font-size: 17px; text-transform: uppercase; margin: 20px 0 12px; letter-spacing: 0.4px; }
.why p { font-size: 13.5px; line-height: 1.6; color: var(--color-ash); margin: 0; }

/* ---------- Leadership ---------- */
.leaders { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--color-charcoal); border: 1px solid var(--color-charcoal); margin-top: 48px; }
@media (max-width: 860px) { .leaders { grid-template-columns: 1fr; } }
.leader { background: var(--color-black-absolute); }
.leader .photo { aspect-ratio: 1/1; overflow: hidden; background: var(--color-charcoal); position: relative; }
.leader .photo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.02); transition: filter 500ms ease, transform 800ms cubic-bezier(.16,1,.3,1); }
.leader:hover .photo img { filter: grayscale(0); transform: scale(1.04); }
.leader .info { padding: 26px 28px 32px; }
.leader h3 { font-size: 22px; text-transform: uppercase; }
.leader .role { font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--color-gold-primary); margin-top: 8px; }
.team-note { margin-top: 40px; border-left: 2px solid var(--color-gold-primary); padding-left: 26px; max-width: 760px; }
.team-note .big { font-family: var(--font-display); font-size: clamp(20px,2.4vw,30px); text-transform: uppercase; line-height: 1.15; }

/* ---------- Insights ---------- */
.ins-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--color-charcoal); border: 1px solid var(--color-charcoal); margin-top: 48px; }
@media (max-width: 860px) { .ins-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .ins-grid { grid-template-columns: 1fr; } }
.ins { background: var(--color-black-absolute); padding: 32px 28px; min-height: 200px; display: flex; flex-direction: column; transition: background 240ms ease; }
.ins:hover { background: var(--color-charcoal); }
.ins .cat { font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--color-cyan-pulse); }
.ins h3 { font-size: 19px; text-transform: uppercase; margin: 16px 0 12px; line-height: 1.2; }
.ins p { font-size: 13.5px; line-height: 1.6; color: var(--color-ash); margin: 0 0 18px; }
.ins .soon { margin-top: auto; font-size: 10.5px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--color-iron); }

/* ---------- Contact / CTA ---------- */
.cta { text-align: center; padding: clamp(90px,14vh,180px) 0; border-top: 1px solid var(--color-charcoal); }
.cta .h-2 { max-width: 16ch; margin: 26px auto 0; }
.cta-actions { margin-top: 44px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.contact-strip { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--color-charcoal); border: 1px solid var(--color-charcoal); margin-top: 64px; text-align: left; }
@media (max-width: 760px) { .contact-strip { grid-template-columns: 1fr; } }
.ci { background: var(--color-black-absolute); padding: 30px 30px; }
.ci .l { font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--color-steel); }
.ci .v { font-family: var(--font-display); font-size: 20px; text-transform: uppercase; margin-top: 12px; }
.ci .v.lower { text-transform: none; font-size: 18px; }

/* ---------- Footer ---------- */
.footer { background: var(--color-dark-iron); border-top: 1px solid var(--color-charcoal); padding: 80px 0 40px; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
@media (max-width: 860px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-top { grid-template-columns: 1fr; } }
.footer h4 { font-size: 12px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--color-steel); margin-bottom: 20px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.footer ul a { font-size: 13.5px; color: var(--color-ash); }
.footer ul a:hover { color: #fff; }
.footer .tag { color: var(--color-ash); font-size: 14px; line-height: 1.6; max-width: 34ch; margin-top: 18px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--color-charcoal); flex-wrap: wrap; }
.footer-bottom, .footer-bottom a { font-size: 11.5px; letter-spacing: 1px; text-transform: uppercase; color: var(--color-iron); }
.footer-bottom a:hover { color: #fff; }