/* ============================================================
   DARK.CSS — Mode C dark register, sitewide.
   Inter only. JetBrains Mono for codes. OKLCH tokens.
   ============================================================ */
:root{
  --bg: oklch(0.19 0.014 62);
  --bg-deep: oklch(0.14 0.012 62);
  --surface: oklch(0.24 0.016 62);
  --ink: oklch(0.98 0.008 80);
  --ink-soft: oklch(0.88 0.010 80);
  --ink-faint: oklch(0.68 0.012 72);
  --accent: oklch(0.74 0.18 52);
  --accent-deep: oklch(0.64 0.18 46);
  --rule: oklch(0.98 0.008 80 / 0.14);
  --rule-strong: oklch(0.98 0.008 80 / 0.30);
  --body: "Inter", system-ui, sans-serif;
  --display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --ease: cubic-bezier(.2,.7,.2,1);
  --ease-out-quart: cubic-bezier(.25,1,.5,1);
}
*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }
html{ background:var(--bg-deep); scroll-behavior:smooth; }
body{
  background:var(--bg); color:var(--ink);
  font-family:var(--body); font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
::selection{ background:var(--accent); color:var(--bg); }

/* nav */
header.nav{
  position:sticky; top:0; z-index:50;
  background:oklch(0.16 0.012 60 / 0.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--rule);
  padding:16px 32px;
  display:flex; align-items:center; justify-content:space-between; gap:18px;
}
.lockup{ display:flex; align-items:center; gap:12px; }
.lockup .mark{ width:22px; height:22px; border:1.5px solid var(--ink); border-radius:50%; position:relative; flex-shrink:0; }
.lockup .mark::after{ content:""; position:absolute; inset:3px; border-radius:50%; border:1.5px solid transparent; border-top-color:var(--accent); transform:rotate(35deg); }
.lockup .word{ font-weight:600; letter-spacing:-0.01em; font-size:15px; color:var(--ink); }
.lockup .inscription{ font-family:var(--mono); font-size:10.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-faint); margin-left:6px; }
nav.primary{ display:flex; gap:24px; }
nav.primary a{ font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-soft); padding:4px 0; position:relative; transition:color .18s var(--ease); }
nav.primary a::after{ content:""; position:absolute; left:0; right:0; bottom:-2px; height:1px; background:var(--accent); transform:scaleX(0); transform-origin:left; transition:transform .25s var(--ease); }
nav.primary a:hover{ color:var(--ink); }
nav.primary a:hover::after,
nav.primary a.active::after{ transform:scaleX(1); }
.nav-cta{
  font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--bg); background:var(--accent); padding:9px 14px;
  transition:background .18s var(--ease), transform .2s var(--ease);
}
.nav-cta:hover{ background:var(--ink); transform:translateY(-1px); }
@media (max-width:880px){ nav.primary{ display:none; } .lockup .inscription{ display:none; } }

/* page wrappers */
.page{ padding:80px 32px; max-width:1200px; margin:0 auto; }
.page-narrow{ padding:80px 32px; max-width:760px; margin:0 auto; }

/* hero block */
.hero{
  min-height:72vh;
  padding:80px 32px 64px;
  display:flex; flex-direction:column; justify-content:center;
  position:relative; overflow:hidden;
}
.hero::before{
  content:""; position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(900px 500px at 88% 18%, oklch(0.22 0.014 60) 0%, transparent 60%),
    radial-gradient(700px 460px at 6% 86%, oklch(0.20 0.030 50 / 0.5) 0%, transparent 55%);
}
.hero-inner{ position:relative; z-index:1; max-width:1200px; margin:0 auto; width:100%; }
.eyebrow{
  font-family:var(--mono); font-size:13px; letter-spacing:.02em;
  color:var(--ink-soft); margin-bottom:28px; font-weight:400;
  display:flex; align-items:center; gap:14px;
}
.eyebrow::before{ content:""; width:36px; height:1px; background:var(--accent); }
h1.hero-h1{
  font-family:var(--display);
  font-size:clamp(56px, 9vw, 140px); line-height:0.92;
  font-weight:400; letter-spacing:-0.025em;
  margin-bottom:24px; color:var(--ink);
}
h1.hero-h1 .accent{ color:var(--accent); }
.hero-deck{
  max-width:62ch; font-size:clamp(17px, 1.6vw, 19px);
  color:var(--ink-soft); margin-bottom:36px;
}

/* CTAs */
.cta-primary{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono); font-size:12px; letter-spacing:.16em; text-transform:uppercase;
  background:var(--accent); color:var(--bg); padding:14px 22px;
  transition:transform .2s var(--ease), background .2s var(--ease);
}
.cta-primary:hover{ transform:translateY(-1px); background:var(--ink); }
.cta-secondary{
  font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--ink-soft); padding:14px 0;
  border-bottom:1px solid var(--rule-strong);
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.cta-secondary:hover{ color:var(--ink); border-color:var(--ink); }
.cta-row{ display:flex; gap:18px; align-items:center; flex-wrap:wrap; }

/* typography */
h2.section-h{
  font-family:var(--display);
  font-size:clamp(38px, 4.4vw, 60px); font-weight:400; letter-spacing:-0.015em;
  line-height:1.05; margin-bottom:14px; color:var(--ink);
}
h3.sub-h{
  font-size:clamp(20px, 2vw, 26px); font-weight:600; letter-spacing:-0.01em;
  margin-bottom:8px; color:var(--ink);
}
.lede{ font-size:17px; color:var(--ink-soft); max-width:60ch; margin-bottom:48px; }
.prose p{ margin-bottom:18px; color:var(--ink-soft); max-width:65ch; }
.prose h2{ font-family:var(--display); font-size:clamp(32px,3.4vw,42px); font-weight:400; letter-spacing:-0.015em; margin:48px 0 14px; color:var(--ink); }
.prose h3{ font-size:18px; font-weight:600; margin:32px 0 8px; color:var(--ink); }
.prose ul, .prose ol{ margin:0 0 18px 22px; color:var(--ink-soft); }
.prose li{ margin-bottom:6px; }
.prose a{ color:var(--accent); border-bottom:1px solid var(--rule-strong); transition:border-color .18s var(--ease); }
.prose a:hover{ border-color:var(--accent); }
.prose strong{ color:var(--ink); }

/* portal band (between hero and content) */
.portal-band{
  border-top:1px solid var(--rule); border-bottom:1px solid var(--rule);
  padding:20px 32px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  background:var(--bg-deep);
}
.portal-band .label,
.portal-band .meta{ font-family:var(--mono); font-size:12.5px; letter-spacing:.02em; color:var(--ink-soft); }
.portal-band .meta{ color:var(--ink-faint); }

/* index rows (used by disciplines, programs, solutions, fleet) */
.row-list{ display:flex; flex-direction:column; max-width:1200px; margin:0 auto; }
.row-list .row{
  display:grid; grid-template-columns:60px 220px 1fr auto;
  gap:32px; align-items:baseline; padding:28px 0;
  border-top:1px solid var(--rule);
  color:var(--ink-soft);
  transition:color .2s var(--ease), padding .25s var(--ease);
}
.row-list .row:last-child{ border-bottom:1px solid var(--rule); }
.row-list .row:hover{ color:var(--ink); padding-left:8px; }
.row-list .row:hover .row-name{ color:var(--accent); }
.row .ix{ font-family:var(--mono); font-size:11px; letter-spacing:.14em; color:var(--ink-faint); }
.row-name{ font-size:clamp(20px,2vw,26px); font-weight:600; letter-spacing:-0.01em; color:var(--ink); transition:color .2s var(--ease); }
.row-desc{ font-size:15px; line-height:1.5; }
.row-arrow{ font-family:var(--mono); font-size:14px; color:var(--ink-faint); transition:transform .25s var(--ease), color .2s var(--ease); }
.row-list .row:hover .row-arrow{ transform:translateX(6px); color:var(--accent); }
@media (max-width:880px){
  .row-list .row{ grid-template-columns:48px 1fr auto; gap:18px; }
  .row-desc{ display:none; }
}

/* spec / fact strip */
.spec-strip{
  display:grid; grid-template-columns:repeat(4, 1fr);
  gap:0; border-top:1px solid var(--rule); border-bottom:1px solid var(--rule);
  background:var(--bg-deep);
}
.spec-strip > div{
  padding:24px 28px; border-left:1px solid var(--rule);
}
.spec-strip > div:first-child{ border-left:0; }
.spec-strip dt{ font-family:var(--mono); font-size:10.5px; letter-spacing:.18em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:8px; }
.spec-strip dd{ font-size:18px; font-weight:600; color:var(--ink); letter-spacing:-0.005em; }
.spec-strip dd small{ display:block; font-weight:400; font-size:11.5px; font-family:var(--mono); color:var(--ink-soft); letter-spacing:.04em; margin-top:4px; }
@media (max-width:880px){ .spec-strip{ grid-template-columns:repeat(2, 1fr); } .spec-strip > div:nth-child(3){ border-left:0; border-top:1px solid var(--rule);} .spec-strip > div:nth-child(4){ border-top:1px solid var(--rule);} }

/* footer */
footer.foot{ border-top:1px solid var(--rule); padding:64px 32px 40px; }
.foot-inner{ max-width:1200px; margin:0 auto; display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.foot-col h3{ font-family:var(--mono); font-size:10.5px; letter-spacing:.20em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:14px; font-weight:500; }
.foot-col a{ display:block; padding:5px 0; font-size:14px; color:var(--ink-soft); transition:color .18s var(--ease); }
.foot-col a:hover{ color:var(--accent); }
.foot-brand .mark-large{ font-size:22px; font-weight:600; letter-spacing:-0.01em; margin-bottom:12px; color:var(--ink); }
.foot-brand p{ font-size:13px; color:var(--ink-faint); max-width:36ch; line-height:1.5; }
.foot-base{
  margin-top:48px; padding-top:24px;
  border-top:1px solid var(--rule);
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-family:var(--mono); font-size:10.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-faint);
  max-width:1200px; margin-left:auto; margin-right:auto;
}
@media (max-width:880px){ .foot-inner{ grid-template-columns:1fr 1fr; } }

/* sitewide mobile polish */
@media (max-width:680px){
  header.nav{ padding:14px 20px; }
  .hero{ padding:56px 20px 56px; min-height:auto; }
  h1.hero-h1{ font-size:clamp(40px, 11vw, 68px) !important; line-height:1.0; }
  .hero-deck{ font-size:16px; }
  .eyebrow{ font-size:11.5px; margin-bottom:18px; }
  .page{ padding:56px 20px; }
  .page-narrow{ padding:56px 20px; }
  h2.section-h{ font-size:clamp(28px, 7.5vw, 40px); }
  .cta-row{ gap:12px; }
  .cta-primary{ padding:12px 18px; font-size:11.5px; }
  .cta-secondary{ font-size:11px; padding:10px 0; }
  .row-list .row{ grid-template-columns:36px 1fr auto; gap:14px; padding:22px 0; }
  .row-name{ font-size:19px; }
  .foot-inner{ grid-template-columns:1fr; gap:32px; }
  footer.foot{ padding:48px 20px 32px; }
}
@media (max-width:420px){
  h1.hero-h1{ font-size:36px !important; }
  h2.section-h{ font-size:26px; }
}

/* forms */
input[type=text],input[type=email],input[type=tel],input[type=url],textarea,select{
  width:100%; padding:12px 14px;
  font:500 14px/1.4 var(--body);
  color:var(--ink); background:var(--bg-deep);
  border:1px solid var(--rule-strong); border-radius:0;
  transition:border-color .18s var(--ease);
}
input:focus,textarea:focus,select:focus{ outline:none; border-color:var(--accent); }
label{ display:block; font:600 10.5px/1 var(--mono); letter-spacing:.18em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:8px; }
.field{ margin-bottom:22px; }

/* ============================================================
   ANIMATIONS — /impeccable animate
   ============================================================ */

/* fade-up on scroll */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s var(--ease-out-quart), transform .6s var(--ease-out-quart); }
.reveal.in{ opacity:1; transform:none; }
.reveal.delay-1{ transition-delay:.06s; }
.reveal.delay-2{ transition-delay:.12s; }
.reveal.delay-3{ transition-delay:.18s; }
.reveal.delay-4{ transition-delay:.24s; }

/* hero word stagger */
.hero-h1 .word{ display:inline-block; opacity:0; transform:translateY(28px); animation:wordIn .7s var(--ease-out-quart) forwards; }
.hero-h1 .word:nth-child(1){ animation-delay:.05s }
.hero-h1 .word:nth-child(2){ animation-delay:.10s }
.hero-h1 .word:nth-child(3){ animation-delay:.15s }
.hero-h1 .word:nth-child(4){ animation-delay:.20s }
.hero-h1 .word:nth-child(5){ animation-delay:.25s }
.hero-h1 .word:nth-child(6){ animation-delay:.30s }
.hero-h1 .word:nth-child(7){ animation-delay:.35s }
.hero-h1 .word:nth-child(8){ animation-delay:.40s }
@keyframes wordIn{ to{ opacity:1; transform:none; } }

/* page sweep transition */
.page-sweep{ position:fixed; inset:0; background:var(--bg-deep); z-index:999; transform:translateY(-100%); pointer-events:none; transition:transform .28s var(--ease); }
.page-sweep.in{ transform:translateY(0); }
.page-sweep.out{ transform:translateY(100%); }

/* mark logo spin on hover */
.lockup:hover .mark::after{ animation:markSpin .8s var(--ease-out-quart); }
@keyframes markSpin{ from{ transform:rotate(35deg); } to{ transform:rotate(395deg); } }

/* ============================================================
   AMPLIFIED MOTION — extra utilities
   ============================================================ */

/* prose link animated underline */
.prose a{ position:relative; }
.prose a::after{
  content:""; position:absolute; left:0; right:0; bottom:-1px; height:1px;
  background:var(--accent); transform:scaleX(0); transform-origin:left;
  transition:transform .32s cubic-bezier(.22,1,.36,1);
}
.prose a:hover::after{ transform:scaleX(1); }

/* letter-stagger reveal utility */
.letter-reveal{ display:inline-block; }
.letter-reveal .lr-char{
  display:inline-block; opacity:0; transform:translateY(0.4em);
  transition:opacity .6s var(--ease-out-quart), transform .6s var(--ease-out-quart);
  transition-delay:var(--lr-delay, 0ms);
  white-space:pre;
}
.letter-reveal.in .lr-char{ opacity:1; transform:none; }

/* marquee */
.marquee{ overflow:hidden; white-space:nowrap; }
.marquee-track{
  display:inline-block; padding-left:100%;
  animation:marqueeSlide 30s linear infinite;
}
@keyframes marqueeSlide{ to { transform:translateX(-100%); } }

/* hover-lift on .row */
.row-list .row{
  transition:color .2s var(--ease), padding .25s var(--ease), box-shadow .35s cubic-bezier(.22,1,.36,1), background-color .35s cubic-bezier(.22,1,.36,1);
}
.row-list .row:hover{
  box-shadow:0 12px 36px -16px oklch(0.72 0.20 50 / 0.30), inset 0 0 0 1px oklch(0.72 0.20 50 / 0.15);
  background-color:oklch(0.72 0.20 50 / 0.03);
}

/* reveal variants */
.reveal-left{ opacity:0; transform:translateX(-28px); transition:opacity .7s var(--ease-out-quart), transform .7s var(--ease-out-quart); }
.reveal-left.in{ opacity:1; transform:none; }
.reveal-right{ opacity:0; transform:translateX(28px); transition:opacity .7s var(--ease-out-quart), transform .7s var(--ease-out-quart); }
.reveal-right.in{ opacity:1; transform:none; }
.reveal-scale{ opacity:0; transform:scale(0.92); transition:opacity .7s var(--ease-out-quart), transform .7s var(--ease-out-quart); }
.reveal-scale.in{ opacity:1; transform:none; }

/* pulse-dot */
.pulse-dot{
  display:inline-block; width:7px; height:7px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 0 oklch(0.72 0.20 50 / 0.55);
  animation:pulseGlow 2.4s cubic-bezier(.25,1,.5,1) infinite;
}
@keyframes pulseGlow{
  0%   { box-shadow:0 0 0 0 oklch(0.72 0.20 50 / 0.55); opacity:1; }
  70%  { box-shadow:0 0 0 12px oklch(0.72 0.20 50 / 0);   opacity:0.7; }
  100% { box-shadow:0 0 0 0 oklch(0.72 0.20 50 / 0);      opacity:1; }
}

/* cursor accent */
.cursor-accent{
  position:fixed; left:0; top:0; width:12px; height:12px; border-radius:50%;
  background:var(--accent); opacity:0.4;
  mix-blend-mode:screen;
  pointer-events:none; z-index:9999;
  transform:translate3d(-100px,-100px,0);
  transition:opacity .3s var(--ease-out-quart);
}
@media (pointer:coarse){ .cursor-accent{ display:none; } }

/* count-up — purely a hook; JS drives text */
.count-up{ font-variant-numeric:tabular-nums; }

/* reduced motion */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
  .reveal, .reveal-left, .reveal-right, .reveal-scale{ opacity:1; transform:none; }
  .hero-h1 .word{ opacity:1; transform:none; }
  .letter-reveal .lr-char{ opacity:1; transform:none; }
  .cursor-accent{ display:none; }
  .marquee-track{ animation:none; }
  .pulse-dot{ animation:none; }
}