/* ==========================================================================
   CAI Global — Shared Stylesheet
   Brand palette: Deep Tech Blue system
   ========================================================================== */

:root{
  /* Light institutional base */
  --bg:#F7F9FC;
  --bg-card:#FFFFFF;
  --ink:#0F1117;         /* graphite black — headings on light */
  --body:#3C4356;        /* body text on light */
  --silver:#5B6478;      /* secondary text on light */
  --line:rgba(10,27,51,0.12);

  /* Deep tech blue system — used for hero, quote breaks, footer, nav accents */
  --navy:#0A1B33;
  --navy-2:#0F1117;
  --accent:#0D47A1;
  --accent-light:#3E7BE0;
  --on-navy:#EDF1F7;
  --on-navy-silver:#8892A6;
  --on-navy-line:rgba(136,146,166,0.18);

  --radius:2px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--body);
  font-family:'Inter',sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;font-weight:600;letter-spacing:-0.01em;color:var(--ink);}
.mono{font-family:'IBM Plex Mono',monospace;}
a{color:inherit;text-decoration:none;}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px;}
::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
img,svg{display:block;max-width:100%;}

/* NAV ---------------------------------------------------------------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,249,252,0.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
nav.wrap{display:flex;align-items:center;justify-content:space-between;height:74px;}
.logo{display:flex;flex-direction:column;line-height:1.1;}
.logo .name{font-family:'Space Grotesk',sans-serif;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:0.01em;}
.logo .sub{font-family:'IBM Plex Mono',monospace;font-size:9px;color:var(--silver);letter-spacing:0.06em;margin-top:3px;}
.nav-links{display:flex;gap:30px;align-items:center;}
.nav-links a{font-size:13.5px;color:var(--silver);transition:color .2s;}
.nav-links a:hover,.nav-links a.active{color:var(--ink);}
@media(max-width:900px){.nav-links{display:none;}}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;font-size:13px;font-weight:500;
  border-radius:var(--radius);border:1px solid transparent;
  transition:all .2s;white-space:nowrap;
}
.btn-solid{background:var(--accent);color:#fff;}
.btn-solid:hover{background:var(--accent-light);}
.btn-ghost-dark{border-color:var(--line);color:var(--ink);}
.btn-ghost-dark:hover{border-color:var(--accent);color:var(--accent);}
.btn-ghost-light{border-color:var(--on-navy-line);color:var(--on-navy);}
.btn-ghost-light:hover{border-color:var(--accent-light);color:var(--accent-light);}

/* HERO (dark, full-bleed) --------------------------------------------- */
.hero{
  background:var(--navy);color:var(--on-navy);
  min-height:82vh;display:flex;flex-direction:column;justify-content:center;
  position:relative;overflow:hidden;
}
.orbit-field{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0;}
.orbit-field svg{position:absolute;opacity:0.5;}
.kicker{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.14em;
  color:var(--accent-light);display:flex;align-items:center;gap:10px;margin-bottom:24px;
}
.kicker::before{content:"";width:24px;height:1px;background:var(--accent-light);}
.kicker.on-light{color:var(--accent);}
h1.mission{font-family:'Space Grotesk',sans-serif;font-weight:600;color:var(--on-navy);
  font-size:clamp(34px,5.6vw,62px);line-height:1.08;max-width:900px;position:relative;z-index:1;}
.mission .dim{color:var(--on-navy-silver);}
.hero-sub{max-width:600px;margin-top:26px;font-size:16.5px;color:var(--on-navy-silver);position:relative;z-index:1;}
.hero-cta{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap;position:relative;z-index:1;}
.credibility{margin-top:56px;padding-top:24px;border-top:1px solid var(--on-navy-line);
  display:flex;flex-wrap:wrap;gap:10px 26px;position:relative;z-index:1;}
.credibility span{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--on-navy-silver);}
.credibility strong{color:var(--on-navy);font-weight:500;}

/* Small page header (non-home pages) ----------------------------------*/
.page-hero{background:var(--navy);color:var(--on-navy);padding:80px 0 64px;position:relative;overflow:hidden;}
.page-hero h1{color:var(--on-navy);font-size:clamp(30px,4.4vw,48px);position:relative;z-index:1;}
.page-hero p{color:var(--on-navy-silver);margin-top:16px;max-width:600px;font-size:15.5px;position:relative;z-index:1;}

/* QUOTE BREAK (dark) --------------------------------------------------- */
.quote-break{position:relative;padding:110px 0;text-align:center;overflow:hidden;background:var(--navy-2);color:var(--on-navy);}
.quote-break blockquote{font-family:'Space Grotesk',sans-serif;font-weight:500;
  font-size:clamp(22px,3.2vw,38px);max-width:800px;margin:0 auto;line-height:1.3;position:relative;z-index:1;}
.quote-break cite{display:block;margin-top:22px;font-style:normal;font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;color:var(--on-navy-silver);letter-spacing:0.04em;position:relative;z-index:1;}

/* SECTIONS (light) ------------------------------------------------------ */
section.block{padding:100px 0;border-bottom:1px solid var(--line);}
.section-head{max-width:660px;margin-bottom:50px;}
.section-head h2{font-size:clamp(26px,3.4vw,38px);margin-top:14px;}
.section-head p{color:var(--silver);margin-top:14px;font-size:15.5px;}

/* Two-engine spotlight (home) ------------------------------------------- */
.spotlight-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:10px;}
.spotlight-card{background:var(--bg-card);padding:44px 38px;transition:background .2s;}
.spotlight-card:hover{background:#F1F5FB;}
.spotlight-card .mono{font-size:11px;color:var(--accent);letter-spacing:0.08em;}
.spotlight-card h3{font-size:24px;margin-top:14px;}
.spotlight-card p{font-size:14.5px;color:var(--silver);margin-top:14px;}
.spotlight-card .go{margin-top:20px;font-size:13px;color:var(--accent);font-weight:500;}
@media(max-width:760px){.spotlight-grid{grid-template-columns:1fr;}}

/* THESIS grid ------------------------------------------------------------*/
.thesis-lead p{font-size:19px;color:var(--body);max-width:760px;line-height:1.7;}
.thesis-lead strong{color:var(--ink);font-weight:600;}
.thesis-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:50px;}
.thesis-card{background:var(--bg-card);padding:30px 22px;}
.thesis-card .mono{font-size:11px;color:var(--accent);letter-spacing:0.08em;}
.thesis-card h3{font-size:17px;margin-top:12px;}
.thesis-card p{font-size:13.5px;color:var(--silver);margin-top:10px;}
@media(max-width:920px){.thesis-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.thesis-grid{grid-template-columns:1fr;}}

/* ENGINE / PROGRAM rows ---------------------------------------------------*/
.engine-row{display:grid;grid-template-columns:0.9fr 1.6fr;gap:36px;padding:40px 0;border-top:1px solid var(--line);align-items:start;}
.engine-row:last-child{border-bottom:1px solid var(--line);}
.engine-row .code{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--accent);letter-spacing:0.08em;}
.engine-row h3{font-size:22px;margin-top:10px;}
.engine-row .desc p{font-size:14.5px;color:var(--silver);}
.engine-row .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.engine-row .tags span{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--accent);
  border:1px solid rgba(13,71,161,0.28);background:rgba(13,71,161,0.06);padding:4px 10px;border-radius:20px;}
@media(max-width:760px){.engine-row{grid-template-columns:1fr;gap:10px;}}

.building-note{font-size:13.5px;color:var(--silver);max-width:660px;margin-top:16px;
  padding:14px 18px;border-left:2px solid var(--accent);background:rgba(13,71,161,0.05);}

.sector-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:40px;}
.sector-card{background:var(--bg-card);padding:28px 20px;min-height:110px;display:flex;flex-direction:column;justify-content:space-between;}
.sector-card span{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--silver);}
.sector-card h4{font-size:15.5px;margin-top:12px;font-weight:500;font-family:'Inter',sans-serif;}
@media(max-width:920px){.sector-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.sector-grid{grid-template-columns:1fr;}}

/* CORRIDOR nodes -----------------------------------------------------------*/
.corridor-list{display:flex;flex-wrap:wrap;margin-top:10px;border-top:1px solid var(--line);}
.corridor-list .node{flex:1;min-width:220px;padding:28px 24px 28px 0;border-bottom:1px solid var(--line);border-right:1px solid var(--line);}
.corridor-list .node:last-child{border-right:none;}
.corridor-list .node .mono{font-size:11px;color:var(--accent);}
.corridor-list .node .city{font-size:19px;margin-top:8px;font-family:'Space Grotesk',sans-serif;font-weight:600;}
.corridor-list .node .role{font-size:13.5px;color:var(--silver);margin-top:6px;}
.corridor-list .node ul{margin-top:10px;padding-left:16px;}
.corridor-list .node li{font-size:13px;color:var(--body);margin-top:4px;}

/* ECOSYSTEM groups -----------------------------------------------------------*/
.eco-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:24px;}
.eco-groups h4{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--silver);letter-spacing:0.08em;margin-bottom:14px;}
.eco-groups .item{font-size:14px;color:var(--ink);padding:9px 0;border-top:1px solid var(--line);}
@media(max-width:860px){.eco-groups{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.eco-groups{grid-template-columns:1fr;}}

/* TEAM ------------------------------------------------------------------*/
.team-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:20px;}
.team-card{background:var(--bg-card);padding:40px;}
.team-card .role{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--accent);letter-spacing:0.06em;}
.team-card h3{font-size:24px;margin-top:14px;}
.team-card .title{font-size:14px;color:var(--silver);margin-top:4px;}
.team-card p{font-size:14px;color:var(--body);margin-top:16px;}
.team-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.team-card .tags span{font-family:'IBM Plex Mono',monospace;font-size:10.5px;color:var(--silver);
  border:1px solid var(--line);padding:3px 9px;border-radius:20px;}
@media(max-width:760px){.team-grid{grid-template-columns:1fr;}}

/* NEWS / PUBLICATIONS -----------------------------------------------------*/
.news-list{display:flex;flex-direction:column;margin-top:10px;}
.news-row{display:grid;grid-template-columns:160px 1fr;gap:28px;padding:32px 0;border-top:1px solid var(--line);}
.news-row:last-child{border-bottom:1px solid var(--line);}
.news-row .date{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--silver);padding-top:3px;}
.news-row h3{font-size:19px;}
.news-row p{font-size:14px;color:var(--silver);margin-top:10px;}
.news-row .credit{margin-top:10px;font-size:12.5px;color:var(--accent);font-family:'IBM Plex Mono',monospace;}
@media(max-width:640px){.news-row{grid-template-columns:1fr;gap:8px;}}

/* PORTFOLIO ---------------------------------------------------------------*/
.advisory-list{display:flex;flex-direction:column;margin-top:10px;}
.advisory-row{display:grid;grid-template-columns:220px 1fr;gap:28px;padding:26px 0;border-top:1px solid var(--line);}
.advisory-row:last-child{border-bottom:1px solid var(--line);}
.advisory-row .tag{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--accent);letter-spacing:0.05em;}
.advisory-row p{font-size:14px;color:var(--body);margin-top:6px;}
@media(max-width:640px){.advisory-row{grid-template-columns:1fr;gap:6px;}}

/* CTA / FOOTER ---------------------------------------------------------------*/
.cta-section{text-align:center;padding:130px 0;background:var(--navy);color:var(--on-navy);position:relative;overflow:hidden;}
.cta-section h2{color:var(--on-navy);font-size:clamp(28px,4.2vw,46px);max-width:660px;margin:0 auto;position:relative;z-index:1;}
.cta-section p{color:var(--on-navy-silver);margin-top:16px;position:relative;z-index:1;}
.cta-section .hero-cta{justify-content:center;margin-top:34px;}

footer{padding:50px 0 40px;background:var(--navy-2);color:var(--on-navy);}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px;}
.footer-cols{display:flex;gap:56px;flex-wrap:wrap;}
.footer-col h4{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--on-navy-silver);letter-spacing:0.08em;margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;color:var(--on-navy-silver);margin-bottom:9px;}
.footer-col a:hover{color:var(--on-navy);}
.footer-bottom{margin-top:56px;padding-top:22px;border-top:1px solid var(--on-navy-line);
  display:flex;justify-content:space-between;color:var(--on-navy-silver);font-size:12px;flex-wrap:wrap;gap:10px;}

/* Motion / a11y ---------------------------------------------------------------*/
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}}