:root{
  --bg:#0b1220;
  --card:#0f1a30;
  --text:#e8eefc;
  --muted:#b9c6e6;
  --brand:#c62828; /* červená z loga */
  --brand2:#23a1d1; /* akcent */
  --line:rgba(255,255,255,.12);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 10px;
  --max: 1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 20% 0%, rgba(35,161,209,.18), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgba(198,40,40,.18), transparent 55%),
    var(--bg);
}
a{color:inherit}
.wrap{max-width:var(--max); margin:0 auto; padding:0 18px}
.topbar{
  position:sticky; top:0; z-index:50;
  backdrop-filter:saturate(130%) blur(10px);
  background: rgba(11,18,32,.74);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 0;
  gap:12px;
}
.brand{
  display:flex; align-items:center; gap:12px;
  text-decoration:none;
  font-weight:900;
}
.brand img{height:44px; width:auto; display:block}
.menu{display:flex; gap:10px; align-items:center; flex-wrap:wrap; justify-content:flex-end}
.menu a{
  text-decoration:none;
  color:var(--muted);
  font-weight:700;
  padding:8px 10px;
  border-radius: 10px;
}
.menu a:hover{color:var(--text); background:rgba(255,255,255,.06)}
.menu a.active{color:var(--text); background:rgba(255,255,255,.08); border:1px solid var(--line)}
.cta{display:flex; gap:10px; align-items:center}
.btn{
  display:inline-block;
  text-decoration:none;
  background: linear-gradient(135deg, var(--brand2), rgba(35,161,209,.55));
  color:#07101f;
  font-weight:900;
  padding:10px 14px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  border:1px solid rgba(255,255,255,.10);
  white-space:nowrap;
}
.btn.secondary{
  background: rgba(255,255,255,.06);
  color:var(--text);
  box-shadow:none;
}



.btn{transition: transform .12s ease, filter .12s ease, box-shadow .12s ease, background-color .12s ease, border-color .12s ease;}
.btn:hover{
  transform: translateY(-1px) scale(1.03);
  filter: brightness(1.12);
  box-shadow: 0 14px 34px rgba(0,0,0,.40);
}
.btn:active{transform: translateY(0) scale(1.01); filter: brightness(1.06);}
.btn:focus-visible{outline:2px solid rgba(255,255,255,.30); outline-offset:2px;}
.btn.secondary:hover{filter: brightness(1.12); background: rgba(255,255,255,.10); border-color: rgba(255,255,255,.18);}
.burger{display:none; border:1px solid var(--line); background:rgba(255,255,255,.04); color:var(--text);
  padding:10px 12px; border-radius: 10px; font-weight:900;}
.mobile{display:none; padding:0 0 14px}
.mobile a{display:block; padding:10px 12px; border-radius: 10px; text-decoration:none; color:var(--muted); font-weight:700}
.mobile a:hover{background:rgba(255,255,255,.06); color:var(--text)}
.mobile a.active{background:rgba(255,255,255,.08); color:var(--text); border:1px solid var(--line)}

.hero{padding:46px 0 18px}
.heroGrid{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap:16px;
  align-items:stretch;
}
.card{
  background: rgba(15,26,48,.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.heroMain{padding:26px}
.kicker{color:var(--muted); font-weight:800; letter-spacing:.2px}
h1{margin:10px 0 12px; font-size:clamp(28px, 4vw, 44px); line-height:1.12}
.lead{color:var(--muted); font-size:18px; margin:0 0 18px}
.row{display:flex; gap:10px; flex-wrap:wrap; align-items:center}

.heroImg{
  min-height:330px;
  background:
    linear-gradient(180deg, rgba(11,18,32,.15), rgba(11,18,32,.88)),
    url("../img/olt.jpg") center/cover no-repeat;
  display:flex;
  align-items:flex-end;
  padding:18px;
}
.heroBadge{
  width:100%;
  background: rgba(11,18,32,.62);
  border:1px solid var(--line);
  border-radius: 10px;
  padding:14px;
  color:var(--muted);
  font-weight:720;
}
.chips{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
.chip{
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--muted);
  padding:8px 10px;
  border-radius: 10px;
  font-weight:800;
  font-size:13px;
}

section{padding:34px 0}
h2{font-size:26px; margin:0 0 12px}
h3{font-size:16px; margin:0 0 8px}
p{margin:0 0 12px; color:var(--muted)}
.small{font-size:13px}
.grid2{display:grid; grid-template-columns:1fr 1fr; gap:14px}
.grid3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}

.box{padding:18px}
.feature{
  padding:16px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.feature ul{margin:0; padding-left:18px; color:var(--muted)}
.feature li{margin:6px 0}

.gallery{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
}
.ph{
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  border:1px solid var(--line);
  overflow:hidden;
  background: rgba(255,255,255,.04);
}
.ph img{width:100%; height:100%; object-fit:cover; display:block}

.table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  overflow:hidden;
  border-radius: 10px;
  border:1px solid var(--line);
}
.table th,.table td{
  padding:12px 12px;
  text-align:left;
  border-bottom:1px solid var(--line);
  color:var(--muted);
}
.table th{color:var(--text); background:rgba(255,255,255,.04)}
.table tr:last-child td{border-bottom:none}

.footer{
  padding:22px 0 30px;
  color:rgba(255,255,255,.55);
  border-top:1px solid var(--line);
  margin-top:20px;
}
.badge{
  display:inline-block;
  padding:6px 10px;
  border-radius: 10px;
  background:rgba(198,40,40,.14);
  border:1px solid rgba(198,40,40,.25);
  color:var(--text);
  font-weight:800;
  font-size:12px;
}

@media (max-width: 920px){
  .heroGrid{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .cta{display:none}
  .menu{display:flex; flex-wrap:wrap; gap:10px; justify-content:flex-end}
  .burger{display:none}
  .mobile{display:none}
}
@media (max-width: 520px){
  .gallery{grid-template-columns:1fr}
  .brand img{height:40px}
}

.service{transition: transform .12s ease, filter .12s ease, border-color .12s ease;}
.service:hover{transform: translateY(-1px); filter: brightness(1.05);}