/* Duga Technologies - Polished Enterprise Static Site
   Inspired by large consulting-firm layouts: bold hero, dark overlay, spotlight tiles,
   insights/case-studies cards, and strong typographic hierarchy. */

:root{
  --bg:#ffffff;
  --surface:#f6f7f9;
  --text:#0b1220;
  --muted:#5b6475;
  --line:#e6e9ef;
  --dark:#0b1220;
  --accent:#ffe600;          /* enterprise highlight */
  --accent-ink:#1a1f2b;
  --shadow: 0 16px 40px rgba(11,18,32,0.10);
  --radius: 18px;
  --max: 1160px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  letter-spacing: -0.01em;
}

a{ color:inherit; text-decoration:none; }
.container{ max-width: var(--max); margin:0 auto; padding:0 22px; }

.skip{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip:focus{ left: 22px; top: 22px; width:auto; height:auto; padding:10px 12px; background:#fff; border:1px solid var(--line); border-radius:12px; z-index:999; }

.topbar{
  position: sticky;
  top:0;
  z-index: 50;
  background: rgba(255,255,255,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.mark{
  width: 36px; height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--dark), #2b3447);
  box-shadow: 0 14px 28px rgba(11,18,32,0.18);
  position: relative;
  overflow:hidden;
}
.mark::after{
  content:"";
  position:absolute; inset: -40%;
  background: radial-gradient(circle at 30% 30%, rgba(255,230,0,0.65), transparent 55%);
  transform: rotate(15deg);
}

.navlinks{
  display:flex;
  align-items:center;
  flex-wrap: wrap;
  justify-content:flex-end;
  gap: 6px;
}

.navlinks a{
  font-size: 13.5px;
  color: var(--muted);
  padding: 9px 10px;
  border-radius: 10px;
}
.navlinks a:hover{
  background: rgba(11,18,32,0.04);
  color: var(--text);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 13.5px;
  border: 1px solid var(--line);
}
.btn.primary{
  background: var(--dark);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 14px 26px rgba(11,18,32,0.18);
}
.btn.primary .dot-accent{
  width:8px; height:8px; border-radius:999px; background: var(--accent);
}
.btn.secondary{
  background: rgba(255,255,255,0.92);
}
.btn.secondary:hover{ background: rgba(11,18,32,0.03); }

.hero{
  position: relative;
  overflow:hidden;
  background: var(--dark);
  color:#fff;
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background-image: url("./assets/hero.png");
  background-size: cover;
  background-position: center;
  opacity: 0.92;
  filter: saturate(1.02) contrast(1.05);
  transform: scale(1.03);
}
.hero::after{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(900px 500px at 22% 10%, rgba(255,230,0,0.18), transparent 55%),
    linear-gradient(90deg, rgba(11,18,32,0.86) 0%, rgba(11,18,32,0.55) 52%, rgba(11,18,32,0.18) 100%);
}
.hero-inner{
  position: relative;
  z-index: 2;
  padding: 82px 0 46px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.22fr 0.78fr;
  gap: 30px;
  align-items:start;
}

.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.76);
}
.kicker::before{
  content:"";
  width: 36px;
  height: 2px;
  background: var(--accent);
  border-radius: 99px;
}

h1{
  margin: 12px 0 14px;
  font-size: clamp(36px, 4.2vw, 60px);
  line-height: 1.03;
  letter-spacing: -0.035em;
}

.lead{
  margin: 0 0 22px;
  color: rgba(255,255,255,0.86);
  max-width: 64ch;
  font-size: 16.5px;
}

.pillrow{ display:flex; flex-wrap:wrap; gap: 8px; margin-top: 14px; }
.pill{
  font-size: 12.5px;
  color: rgba(255,255,255,0.90);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  padding: 7px 10px;
  border-radius: 999px;
}

.hero-card{
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  padding: 18px;
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 46px rgba(0,0,0,0.22);
}
.hero-card h3{
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.80);
}
.hero-card ul{ margin:0; padding-left: 18px; color: rgba(255,255,255,0.90); }
.hero-card li{ margin: 8px 0; font-size: 14px; }

.hero-strip{
  margin-top: 22px;
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
}
.hero-stat{
  border-radius: 14px;
  padding: 10px 12px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.88);
  font-size: 13px;
}

section{ padding: 64px 0; }
.section-surface{ background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}
h2{
  margin:0;
  font-size: 24px;
  letter-spacing: -0.02em;
}
.note{
  margin:0;
  color: var(--muted);
  font-size: 13.5px;
  max-width: 70ch;
}

.grid{ display:grid; gap: 14px; }
.grid.cols-3{ grid-template-columns: repeat(3, 1fr); }
.grid.cols-2{ grid-template-columns: repeat(2, 1fr); }

.tile{
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  padding: 18px;
  box-shadow: 0 10px 26px rgba(11,18,32,0.06);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.tile:hover{
  transform: translateY(-2px);
  box-shadow: 0 18px 44px rgba(11,18,32,0.10);
}

.tile .tag{
  display:inline-block;
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.65);
  padding: 6px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.tile h3{ margin:0 0 6px; font-size: 16px; letter-spacing: -0.01em; }
.tile p{ margin:0; color: var(--muted); font-size: 13.5px; }

.spotlight{
  border-radius: calc(var(--radius) + 4px);
  overflow:hidden;
  position: relative;
  background: var(--dark);
  color: #fff;
  border: 1px solid rgba(11,18,32,0.12);
}
.spotlight::before{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(800px 420px at 20% 10%, rgba(255,230,0,0.18), transparent 60%),
    radial-gradient(780px 420px at 90% 60%, rgba(255,255,255,0.08), transparent 60%),
    linear-gradient(135deg, rgba(43,52,71,0.95), rgba(11,18,32,0.95));
}
.spotlight-inner{
  position: relative;
  padding: 22px;
}
.spotlight h3{ margin:0 0 6px; font-size: 18px; letter-spacing: -0.02em; }
.spotlight p{ margin:0; color: rgba(255,255,255,0.82); font-size: 13.5px; }
.spotlight .link{
  margin-top: 14px;
  display:inline-flex;
  align-items:center;
  gap: 10px;
  font-weight: 700;
  color: #fff;
}
.arrow{
  width: 26px; height: 26px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.arrow::before{
  content:"→";
  transform: translateY(-1px);
}

.band{
  position: relative;
  overflow:hidden;
  background: var(--dark);
  color: #fff;
  border-top: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.band::before{
  content:"";
  position:absolute; inset:0;
  background-image: url("./assets/band.png");
  background-size: cover;
  background-position: center;
  opacity: 0.82;
  transform: scale(1.03);
}
.band::after{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(900px 520px at 18% 10%, rgba(255,230,0,0.16), transparent 60%),
    linear-gradient(90deg, rgba(11,18,32,0.84) 0%, rgba(11,18,32,0.56) 56%, rgba(11,18,32,0.22) 100%);
}
.band-inner{ position: relative; z-index: 2; }

.bullets{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 18px;
  list-style:none;
  padding: 0;
  margin: 16px 0 0;
}
.bullets li{
  display:flex;
  gap: 10px;
  color: rgba(255,255,255,0.88);
  font-size: 13.5px;
}
.dot{
  width: 10px; height: 10px;
  border-radius: 999px;
  background: var(--accent);
  margin-top: 6px;
  flex: 0 0 10px;
  box-shadow: 0 10px 18px rgba(255,230,0,0.22);
}

.cta-block{
  display:flex;
  align-items:center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  padding: 22px;
  border-radius: calc(var(--radius) + 6px);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  backdrop-filter: blur(10px);
}
.cta-block h3{ margin:0; font-size: 18px; letter-spacing: -0.02em; }
.cta-block p{ margin: 4px 0 0; color: rgba(255,255,255,0.82); font-size: 13.5px; max-width: 62ch; }

footer{
  padding: 28px 0 38px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.foot{
  display:flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.foot strong{ color: var(--text); }
.foot a{ color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .grid.cols-3{ grid-template-columns: 1fr; }
  .grid.cols-2{ grid-template-columns: 1fr; }
  .bullets{ grid-template-columns: 1fr; }
  .section-head{ flex-direction: column; align-items:flex-start; }
}