/* ============================================================
   APEX Solutions — design system
   Palette: black / graphite / white. Defence-tech, refined.
   ============================================================ */

:root{
  --ink:#0a0a0a;
  --ink-2:#151517;
  --ink-3:#1d1d20;
  --paper:#ffffff;
  --paper-2:#f5f5f6;
  --paper-3:#ededee;
  --line:#e3e3e6;
  --line-dark:rgba(255,255,255,.12);
  --line-dark-2:rgba(255,255,255,.20);
  --grey:#6c6c74;
  --grey-2:#9a9aa2;
  --grey-3:#3f3f46;
  --grey-dark:#a5a5ad;

  --font-display:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;

  --wrap:1180px;
  --pad:clamp(1.25rem,5vw,2.5rem);
  --section:clamp(4.5rem,10vw,8rem);
  --radius:2px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--ink);color:#fff}

.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}

/* ---------- typography ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.04;letter-spacing:-.02em}
.display{
  font-size:clamp(2.6rem,7.5vw,5.4rem);
  font-weight:700;
  letter-spacing:-.035em;
  line-height:.98;
}
h2.section-title{font-size:clamp(2rem,4.5vw,3.1rem);letter-spacing:-.03em}
h3{font-size:1.35rem;letter-spacing:-.02em}
p{color:var(--grey-3)}
.lead{font-size:clamp(1.05rem,1.8vw,1.3rem);color:var(--grey-3);line-height:1.6;font-weight:400}

/* eyebrow / section index */
.eyebrow{
  display:inline-flex;align-items:center;gap:.7rem;
  font-family:var(--font-display);
  font-size:.72rem;font-weight:500;
  letter-spacing:.28em;text-transform:uppercase;
  color:var(--grey);
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.5}
.eyebrow .idx{color:var(--ink);opacity:.35;font-variant-numeric:tabular-nums}
.on-dark .eyebrow,.dark .eyebrow{color:var(--grey-dark)}
.on-dark .eyebrow .idx,.dark .eyebrow .idx{color:#fff}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--font-display);font-weight:500;font-size:.92rem;letter-spacing:.01em;
  padding:.95rem 1.6rem;border-radius:var(--radius);
  border:1px solid var(--ink);background:var(--ink);color:#fff;
  cursor:pointer;transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
  white-space:nowrap;
}
.btn:hover{background:#000;transform:translateY(-2px)}
.btn .arw{transition:transform .3s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.on-dark .btn{background:#fff;color:var(--ink);border-color:#fff}
.on-dark .btn:hover{background:#e9e9ea}
.on-dark .btn-ghost{background:transparent;color:#fff;border-color:var(--line-dark-2)}
.on-dark .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:2.2rem}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(10,10,10,.55);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line-dark);
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.site-header.scrolled{background:rgba(10,10,10,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:.7rem}
.brand .mark{width:26px;height:30px}
.brand .wordmark{font-family:var(--font-display);color:#fff;line-height:1;display:flex;flex-direction:column}
.brand .wordmark b{font-weight:700;font-size:1.02rem;letter-spacing:.02em}
.brand .wordmark span{font-weight:400;font-size:.6rem;letter-spacing:.42em;color:var(--grey-dark);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:2.2rem;list-style:none}
.nav-links a{
  font-family:var(--font-display);font-size:.9rem;font-weight:400;letter-spacing:.01em;
  color:var(--grey-dark);transition:color .2s var(--ease);position:relative;padding:.3rem 0;
}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:#fff}
.nav-links a[aria-current="page"]::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:#fff;
}
.nav-cta{margin-left:.5rem}
.nav-cta .btn{padding:.6rem 1.15rem;font-size:.85rem}

.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:34px;height:34px;position:relative}
.nav-toggle span{position:absolute;left:6px;right:6px;height:1.5px;background:#fff;transition:.3s var(--ease)}
.nav-toggle span:nth-child(1){top:12px}
.nav-toggle span:nth-child(2){top:17px}
.nav-toggle span:nth-child(3){top:22px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:17px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){top:17px;transform:rotate(-45deg)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background:var(--ink);color:#fff;
  padding-top:clamp(9rem,18vh,12rem);
  padding-bottom:var(--section);
  overflow:hidden;
}
.hero::before{ /* faint precision grid */
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 100%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:1}
.hero-mark{width:67px;height:76px;color:#fff;margin-bottom:2rem;opacity:.95}
.hero .display{max-width:16ch}
.hero .display em{font-style:normal;color:var(--grey-2)}
.hero .lead{color:var(--grey-dark);max-width:52ch;margin-top:1.6rem}

/* metrics strip */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line-dark);border-top:1px solid var(--line-dark);
  margin-top:clamp(3rem,7vw,5rem);
}
.metric{background:var(--ink);padding:1.8rem .3rem 0}
.metric b{font-family:var(--font-display);font-weight:600;font-size:clamp(1.5rem,3vw,2.1rem);letter-spacing:-.02em;display:block;color:#fff}
.metric span{font-size:.82rem;color:var(--grey-dark);letter-spacing:.02em}

/* ---------- generic sections ---------- */
section{padding-top:var(--section);padding-bottom:var(--section)}
.dark{background:var(--ink);color:#fff}
.muted-bg{background:var(--paper-2)}
.section-head{max-width:60ch;margin-bottom:clamp(2.5rem,5vw,3.5rem)}
.section-head .eyebrow{margin-bottom:1.2rem}
.section-head p{margin-top:1.1rem}
.dark p,.dark .lead{color:var(--grey-dark)}

/* two-column intro */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,6vw,5rem);align-items:start}
.split .col-title{font-size:clamp(1.8rem,3.4vw,2.6rem)}

/* ---------- capability / service cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.dark .cards{background:var(--line-dark);border-color:var(--line-dark)}
.card{
  background:var(--paper);padding:2.4rem 2rem 2.6rem;position:relative;
  transition:background .3s var(--ease);min-height:280px;display:flex;flex-direction:column;
}
.dark .card{background:var(--ink)}
.card:hover{background:var(--paper-2)}
.dark .card:hover{background:var(--ink-2)}
.card .num{font-family:var(--font-display);font-size:.75rem;letter-spacing:.15em;color:var(--grey-2);margin-bottom:1.6rem}
.card h3{margin-bottom:.7rem}
.card p{font-size:.96rem;color:var(--grey)}
.dark .card p{color:var(--grey-dark)}
.card .card-mark{width:22px;height:26px;color:var(--ink);opacity:.85;margin-bottom:1.6rem}
.dark .card .card-mark{color:#fff}

/* list of capabilities (About/Services) */
.rows{border-top:1px solid var(--line)}
.dark .rows{border-color:var(--line-dark)}
.row{
  display:grid;grid-template-columns:80px 1fr;gap:1.5rem;
  padding:2rem 0;border-bottom:1px solid var(--line);align-items:start;
}
.dark .row{border-color:var(--line-dark)}
.row .r-idx{font-family:var(--font-display);font-size:.8rem;letter-spacing:.1em;color:var(--grey-2);padding-top:.35rem}
.row h3{font-size:1.4rem;margin-bottom:.6rem}
.row p{max-width:64ch;color:var(--grey)}
.dark .row p{color:var(--grey-dark)}
.row-2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:2rem}
@media(max-width:640px){.row-2{grid-template-columns:1fr;gap:.6rem}}

/* ---------- feature / statement band ---------- */
.statement{font-family:var(--font-display);font-weight:500;font-size:clamp(1.7rem,4vw,2.9rem);line-height:1.15;letter-spacing:-.025em;max-width:24ch}
.statement em{font-style:normal;color:var(--grey-2)}

/* founder block */
.founder{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(2rem,6vw,5rem);align-items:center}
.founder-card{
  background:var(--ink);color:#fff;padding:clamp(2rem,4vw,3rem);border:1px solid var(--line-dark);
}
.founder-card .role{color:var(--grey-dark);font-size:.9rem;letter-spacing:.02em}
.founder-card h3{font-size:1.6rem;margin:.2rem 0 1.4rem}
.creds{list-style:none;margin-top:1.6rem;border-top:1px solid var(--line-dark)}
.creds li{padding:.85rem 0;border-bottom:1px solid var(--line-dark);font-size:.92rem;color:var(--grey-dark);display:flex;gap:.8rem}
.creds li b{color:#fff;font-weight:500;font-family:var(--font-display)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:#fff;text-align:center}
.cta-band .statement{margin:0 auto 2rem;text-align:center}
.cta-band .btn-row{justify-content:center}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,6vw,5rem);align-items:start}
.field{margin-bottom:1.3rem}
.field label{display:block;font-family:var(--font-display);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--grey);margin-bottom:.5rem}
.field input,.field textarea,.field select{
  width:100%;font-family:var(--font-body);font-size:1rem;color:var(--ink);
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:.85rem .95rem;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;min-height:140px}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(10,10,10,.08)}
.contact-detail{border-top:1px solid var(--line);padding:1.3rem 0;display:grid;grid-template-columns:110px 1fr;gap:1rem}
.contact-detail .k{font-family:var(--font-display);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--grey)}
.contact-detail .v{color:var(--ink)}
.contact-detail .v a:hover{text-decoration:underline}
.form-note{font-size:.82rem;color:var(--grey);margin-top:.4rem}
.form-status{margin-top:1rem;font-size:.92rem;display:none}
.form-status.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:#050505;color:#fff;padding:clamp(3.5rem,7vw,5rem) 0 2rem;border-top:1px solid var(--line-dark)}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem;padding-bottom:3rem;border-bottom:1px solid var(--line-dark)}
.footer-brand .brand{margin-bottom:1.2rem}
.footer-brand p{color:var(--grey-dark);max-width:36ch;font-size:.95rem}
.footer-col h4{font-family:var(--font-display);font-size:.75rem;letter-spacing:.18em;text-transform:uppercase;color:var(--grey-2);font-weight:500;margin-bottom:1.1rem}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:.65rem}
.footer-col a{color:var(--grey-dark);font-size:.95rem;transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;padding-top:1.8rem}
.footer-bottom p{color:var(--grey-2);font-size:.82rem}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .btn:hover{transform:none}
}

/* ---------- responsive ---------- */
@media(max-width:940px){
  .split,.founder,.contact-grid{grid-template-columns:1fr;gap:2.5rem}
  .cards{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:820px){
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:70px;left:0;right:0;
    background:rgba(8,8,8,.97);backdrop-filter:blur(14px);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:1rem var(--pad) 2rem;border-bottom:1px solid var(--line-dark);
    transform:translateY(-120%);transition:transform .4s var(--ease);
    height:auto;max-height:calc(100vh - 70px);overflow:auto;
  }
  .nav-links.open{transform:none}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:1rem 0;font-size:1.1rem;border-bottom:1px solid var(--line-dark);width:100%}
  .nav-links .nav-cta{margin:1.2rem 0 0}
  .nav-links .nav-cta .btn{width:100%;justify-content:center;padding:.9rem}
  .metrics{grid-template-columns:1fr 1fr}
  .metric{padding-bottom:1.4rem}
}
@media(max-width:560px){
  .cards{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .row{grid-template-columns:1fr;gap:.4rem}
  .row .r-idx{padding-top:0}
  .contact-detail{grid-template-columns:1fr;gap:.2rem}
}