/* =========================================================
   ADG Engineering & Technology — Design System
   Palette: ADG navy, warm amber accent, engineering teal
   Type: Sora (display) / Inter (body) / IBM Plex Mono (data)
   ========================================================= */

:root{
  /* Color */
  --navy-deep:   #01152A;
  --navy-mid:    #0B2947;
  --navy-soft:   #123456;
  --amber:       #D9A441;
  --amber-dim:   #A97C2C;
  --teal:        #1C7C74;
  --paper:       #F5F6F2;
  --white:       #FFFFFF;
  --ink:         #0B1420;
  --muted:       #59697A;
  --line:        rgba(11,20,32,0.10);
  --line-on-dark:rgba(255,255,255,0.14);

  /* Type */
  --f-display: 'Sora', sans-serif;
  --f-body: 'Inter', sans-serif;
  --f-mono: 'IBM Plex Mono', monospace;

  /* Scale */
  --radius: 6px;
  --container: 1180px;
  --shadow: 0 20px 50px -25px rgba(1,21,42,0.35);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
ul{margin:0; padding:0; list-style:none;}
h1,h2,h3,h4{
  font-family:var(--f-display);
  color:var(--navy-deep);
  line-height:1.12;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{margin:0 0 1em;}
:focus-visible{outline:2px solid var(--amber); outline-offset:3px;}

.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}
.eyebrow{
  font-family:var(--f-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--amber-dim);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--amber-dim);
  display:inline-block;
}
.eyebrow.on-dark{ color:var(--amber); }
.eyebrow.on-dark::before{ background:var(--amber); }

section{ padding:88px 0; }
@media (max-width:720px){ section{ padding:56px 0; } }

.section-head{
  max-width:640px;
  margin-bottom:48px;
}
.section-head h2{ font-size:clamp(1.7rem, 3vw, 2.4rem); }
.section-head p{ color:var(--muted); font-size:1.05rem; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--f-body);
  font-weight:600;
  font-size:.95rem;
  padding:14px 26px;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-2px); }
.btn-amber{ background:var(--amber); color:var(--navy-deep); }
.btn-amber:hover{ background:#E8B65A; }
.btn-outline-dark{ border-color:var(--line-on-dark); color:var(--white); }
.btn-outline-dark:hover{ border-color:var(--amber); color:var(--amber); }
.btn-outline-light{ border-color:var(--line); color:var(--navy-deep); }
.btn-outline-light:hover{ border-color:var(--navy-deep); }
.btn-arrow{ transition:transform .18s ease; }
.btn:hover .btn-arrow{ transform:translateX(3px); }

/* ---------- Header ---------- */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(1,21,42,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-on-dark);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:78px;
}
.logo{
  display:flex; flex-direction:column; line-height:1.05;
  font-family:var(--f-display); color:var(--white);
}
.logo img{ height:42px; width:auto; max-width:170px; object-fit:contain; display:block; }
.footer-brand .logo img{ height:36px; max-width:150px; object-fit:contain; }
.logo strong{ font-size:1.25rem; letter-spacing:.02em; }
.logo strong span{ color:var(--amber); }
.logo small{
  font-family:var(--f-mono); font-size:10px; letter-spacing:.12em;
  text-transform:uppercase; color:rgba(255,255,255,0.55); margin-top:3px;
}
.nav-links{ display:flex; align-items:center; gap:34px; }
.nav-links a{
  font-size:.92rem; font-weight:500; color:rgba(255,255,255,0.82);
  position:relative; padding:6px 0;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--amber); transform:scaleX(0); transform-origin:left;
  transition:transform .2s ease;
}
.nav-links a:hover{ color:var(--white); }
.nav-links a:hover::after, .nav-links a.active::after{ transform:scaleX(1); }
.nav-links a.active{ color:var(--white); }
.nav-cta{ display:flex; align-items:center; gap:22px; }
.nav-toggle{
  display:none; background:none; border:none; color:var(--white);
  font-size:26px; cursor:pointer;
}
@media (max-width:900px){
  .nav-links{
    position:fixed; top:78px; left:0; right:0; bottom:0;
    background:var(--navy-deep); flex-direction:column; justify-content:flex-start;
    padding:36px 28px; gap:26px; transform:translateX(100%);
    transition:transform .28s ease;
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-toggle{ display:block; }
  .nav-cta .btn-amber{ padding:11px 18px; font-size:.85rem; }
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:var(--navy-deep);
  color:var(--white);
  padding:172px 0 110px;
  overflow:hidden;
}
.hero-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 70% 30%, black 10%, transparent 75%);
  opacity:.6;
}
.hero .wrap{ position:relative; z-index:2; }
.hero-inner{ max-width:760px; }
.hero h1{
  color:var(--white);
  font-size:clamp(2.3rem, 5vw, 3.6rem);
  margin-bottom:22px;
}
.hero h1 em{ font-style:normal; color:var(--amber); }
.hero .lede{
  font-size:1.15rem; color:rgba(255,255,255,0.78);
  max-width:600px; margin-bottom:36px;
}
.hero-ctas{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:56px; }
.hero-partner{
  display:flex; align-items:center; gap:14px;
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.06em;
  color:rgba(255,255,255,0.6); text-transform:uppercase;
}
.hero-partner .dot{ width:6px; height:6px; border-radius:50%; background:var(--amber); }

/* signature: route/network line motif */
.route-svg{ position:absolute; right:-40px; top:0; bottom:0; width:52%; z-index:1; opacity:.9; }
@media (max-width:900px){ .route-svg{ display:none; } }

.hero-africa-graphic{
  position:absolute; right:0; top:50%; transform:translateY(-50%);
  width:46%; max-width:560px; aspect-ratio:820/551;
  background-size:contain; background-repeat:no-repeat; background-position:center;
  z-index:1; opacity:.95;
}
@media (max-width:900px){ .hero-africa-graphic{ display:none; } }

/* ---------- Page hero (secondary pages) ---------- */
.page-hero{
  background:var(--navy-deep); color:var(--white);
  padding:156px 0 72px; position:relative; overflow:hidden;
}
.page-hero .wrap{ position:relative; z-index:2; }
.page-hero h1{ color:var(--white); font-size:clamp(2rem,4vw,2.9rem); max-width:760px; }
.page-hero p{ color:rgba(255,255,255,0.75); max-width:620px; font-size:1.05rem; }
.page-hero .hero-grid{ mask-image:radial-gradient(ellipse 70% 100% at 85% 0%, black 10%, transparent 70%); }

/* ---------- Cards ---------- */
.grid{ display:grid; gap:26px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:900px){ .grid-3{ grid-template-columns:1fr 1fr; } }
@media (max-width:640px){ .grid-3,.grid-2{ grid-template-columns:1fr; } }

.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--shadow); border-color:transparent; }
.card .num{
  font-family:var(--f-mono); font-size:12px; color:var(--amber-dim);
  letter-spacing:.1em; margin-bottom:16px; display:block;
}
.card h3{ font-size:1.15rem; margin-bottom:10px; }
.card p{ color:var(--muted); font-size:.96rem; margin-bottom:0; }

.pillar-card{
  background:var(--navy-mid); color:var(--white);
  border-radius:var(--radius); padding:34px;
  border:1px solid var(--line-on-dark);
}
.pillar-card h3{ color:var(--white); }
.pillar-card p{ color:rgba(255,255,255,0.68); margin-bottom:0; }
.pillar-card .num{ color:var(--amber); }

/* ---------- Two-col band ---------- */
.band{
  display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center;
}
@media (max-width:860px){ .band{ grid-template-columns:1fr; gap:36px; } }
.band-media{
  background:var(--navy-mid); border-radius:var(--radius);
  padding:40px; color:var(--white); position:relative; min-height:280px;
  display:flex; flex-direction:column; justify-content:flex-end;
  overflow:hidden;
}
.band-media .tag{
  font-family:var(--f-mono); font-size:11.5px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--amber); margin-bottom:10px;
}

/* ---------- Stats strip ---------- */
.stats-strip{
  background:var(--navy-deep); color:var(--white);
  padding:52px 0;
}
.stats-strip .grid{ grid-template-columns:repeat(4,1fr); text-align:center; }
@media (max-width:760px){ .stats-strip .grid{ grid-template-columns:1fr 1fr; row-gap:32px; } }
.stat b{
  font-family:var(--f-display); font-size:2.1rem; color:var(--amber); display:block;
}
.stat span{
  font-family:var(--f-mono); font-size:11.5px; letter-spacing:.08em;
  text-transform:uppercase; color:rgba(255,255,255,0.62);
}

/* ---------- List rows (services / values) ---------- */
.list-row{
  display:flex; gap:22px; padding:26px 0; border-top:1px solid var(--line);
}
.list-row:last-child{ border-bottom:1px solid var(--line); }
.list-row .idx{ font-family:var(--f-mono); color:var(--amber-dim); font-size:.9rem; min-width:34px; }
.list-row h4{ font-family:var(--f-display); margin:0 0 6px; font-size:1.08rem; color:var(--navy-deep); }
.list-row p{ color:var(--muted); margin:0; font-size:.95rem; }

/* ---------- Timeline / PLM phases ---------- */
.phase-track{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
}
@media (max-width:760px){ .phase-track{ grid-template-columns:1fr; } }
.phase{ background:var(--white); padding:28px; }
.phase .idx{ font-family:var(--f-mono); color:var(--amber-dim); font-size:12px; }
.phase h4{ font-size:1.02rem; margin:10px 0 8px; }
.phase p{ color:var(--muted); font-size:.92rem; margin:0; }

/* ---------- Quote / testimonial ---------- */
.quote-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:32px; font-size:1.02rem;
}
.quote-card .who{ margin-top:18px; font-family:var(--f-mono); font-size:12.5px; color:var(--muted); }
.quote-card .who b{ color:var(--navy-deep); font-family:var(--f-body); font-size:.95rem; display:block; }

/* ---------- Team ---------- */
.team-card{ text-align:left; }
.team-photo{
  width:100%; aspect-ratio:1; border-radius:var(--radius);
  background:linear-gradient(155deg, var(--navy-mid), var(--navy-deep));
  display:flex; align-items:center; justify-content:center;
  font-family:var(--f-display); font-size:2.2rem; color:var(--amber);
  margin-bottom:16px;
}
.team-card h4{ margin:0 0 3px; font-size:1.02rem; }
.team-card span{ font-family:var(--f-mono); font-size:11.5px; color:var(--muted); text-transform:uppercase; letter-spacing:.06em; }

/* ---------- Locations strip ---------- */
.loc-strip{
  display:flex; flex-wrap:wrap; gap:12px 30px; justify-content:center;
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--muted); padding-top:8px;
}
.loc-strip span:not(:last-child)::after{ content:"·"; margin-left:30px; color:var(--line); }

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--navy-deep); color:var(--white); border-radius:12px;
  padding:64px; text-align:center; position:relative; overflow:hidden;
}
.cta-band h2{ color:var(--white); }
.cta-band p{ color:rgba(255,255,255,0.72); max-width:520px; margin:0 auto 30px; }
.cta-band .hero-ctas{ justify-content:center; margin-bottom:0; }

/* ---------- Footer ---------- */
footer{
  background:var(--navy-deep); color:rgba(255,255,255,0.72);
  padding:64px 0 28px; margin-top:0;
}
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px;
  padding-bottom:44px; border-bottom:1px solid var(--line-on-dark);
}
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.footer-grid h5{
  font-family:var(--f-mono); font-size:11.5px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--amber); margin-bottom:16px;
}
.footer-grid ul li{ margin-bottom:10px; font-size:.92rem; }
.footer-grid ul a:hover{ color:var(--white); }
.footer-brand .logo strong{ color:var(--white); }
.footer-brand p{ font-size:.92rem; color:rgba(255,255,255,0.6); max-width:280px; margin-top:14px; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:26px; font-size:.85rem; flex-wrap:wrap; gap:14px;
  color:rgba(255,255,255,0.5);
}
.social-row{ display:flex; gap:16px; }
.social-row a{ color:rgba(255,255,255,0.6); }
.social-row a:hover{ color:var(--amber); }

/* ---------- Form ---------- */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
@media (max-width:640px){ .form-grid{ grid-template-columns:1fr; } }
.field{ display:flex; flex-direction:column; gap:8px; }
.field.full{ grid-column:1/-1; }
.field label{ font-size:.85rem; font-weight:600; color:var(--navy-deep); }
.field input, .field select, .field textarea{
  font-family:var(--f-body); font-size:.96rem; padding:13px 16px;
  border:1px solid var(--line); border-radius:var(--radius); background:var(--white);
  color:var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--amber);
}
.field textarea{ resize:vertical; min-height:130px; }

/* ---------- Contact info cards ---------- */
.contact-info{ display:flex; flex-direction:column; gap:24px; }
.info-card{
  display:flex; gap:16px; background:var(--white); border:1px solid var(--line);
  border-radius:var(--radius); padding:22px;
}
.info-card .ic{
  width:40px; height:40px; border-radius:8px; background:var(--navy-deep); color:var(--amber);
  display:flex; align-items:center; justify-content:center; flex-shrink:0; font-family:var(--f-mono);
  font-size:14px;
}
.info-card h4{ font-size:.98rem; margin:0 0 4px; }
.info-card p{ margin:0; color:var(--muted); font-size:.92rem; }

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---------- Misc ---------- */
.tag-pill{
  display:inline-block; font-family:var(--f-mono); font-size:11px; letter-spacing:.07em;
  text-transform:uppercase; color:var(--teal); background:rgba(28,124,116,0.1);
  padding:5px 11px; border-radius:20px; margin-bottom:14px;
}
.divider{ height:1px; background:var(--line); border:none; margin:0; }

/* ---------- Photo treatments ---------- */
.hero{ background-size:cover; background-position:center; }
.hero-photo-overlay{
  position:absolute; inset:0; z-index:1;
  background:linear-gradient(100deg, rgba(1,21,42,0.96) 30%, rgba(1,21,42,0.72) 65%, rgba(1,21,42,0.5) 100%);
}
.band-media.has-photo{
  background-size:cover; background-position:center;
  justify-content:flex-end;
}
.band-media.has-photo::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(1,21,42,0.35) 0%, rgba(1,21,42,0.92) 100%);
}
.band-media{ position:relative; }
.band-media > *{ position:relative; z-index:1; }

.photo-banner{
  height:320px; border-radius:var(--radius); background-size:cover; background-position:center;
  position:relative; display:flex; align-items:flex-end; overflow:hidden; margin-top:48px;
}
.photo-banner::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(0deg, rgba(1,21,42,0.85) 0%, rgba(1,21,42,0.15) 60%);
}
.photo-banner-text{ position:relative; z-index:1; padding:28px 34px; color:var(--white); }
.photo-banner-text .eyebrow{ margin-bottom:6px; }
.photo-banner-text p{ color:rgba(255,255,255,0.8); margin:0; max-width:480px; font-size:.95rem; }

.case-visual{
  background-size:cover; background-position:center;
  position:relative; color:var(--white); overflow:hidden;
}
.case-visual::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(1,21,42,0.15) 0%, rgba(1,21,42,0.88) 100%);
}
.case-visual span{ position:relative; z-index:1; }

.office-photo{
  border-radius:var(--radius); overflow:hidden; margin-bottom:28px; height:220px;
  background-size:cover; background-position:center;
}