/* Base */
:root{
  --bg: #0b1020;
  --surface: #121931;
  --muted: #8a94a7;
  --text: #e8ecf6;
  --primary: #2eaadc;
  --accent: #6bcf4e;
  --ring: rgba(46,170,220,.4);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: 'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text); background:linear-gradient(180deg,#0b1020 0%, #0d1326 60%, #0b1020 100%);
  line-height:1.6;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
.container{width:min(1100px,92%);margin-inline:auto}
.narrow{width:min(800px,92%)}
.muted{color:var(--muted)}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(11,16,32,.7);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06)
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:.8rem 0}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:800;color:var(--text)}
.brand .brand-logo{
  width:36px;height:36px;display:grid;place-items:center;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),#7bd3f1);color:#081220;font-weight:800
}
.brand.small .brand-logo{width:28px;height:28px;border-radius:8px}
.brand-text{letter-spacing:.2px}
.nav{display:flex;gap:1.2rem;align-items:center}
.nav a{color:var(--text);opacity:.9}
.nav .btn{margin-left:.4rem}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;position:relative}
.nav-toggle span{position:absolute;left:10px;right:10px;height:2px;background:#fff;border-radius:1px;transition:.2s}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:28px}

/* Hero */
.hero{padding:4.5rem 0 2rem;background:
  radial-gradient(1200px 400px at 80% -20%, rgba(46,170,220,.25), transparent 60%),
  radial-gradient(1000px 500px at -10% 10%, rgba(107,207,78,.15), transparent 50%);
}
.grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:2.2rem;align-items:center}
.hero h1{font-size:clamp(1.8rem,2.6vw,2.8rem);line-height:1.15;margin:0 0 .6rem}
.hero p{color:var(--muted);margin:0 0 1.2rem}
.hero-cta{display:flex;gap:.8rem;margin:1.2rem 0}
.badges{display:flex;gap:1rem;flex-wrap:wrap;padding:0;margin:1rem 0 0;list-style:none;color:var(--muted)}
.media-card{background:linear-gradient(180deg,#1a254a 0%, #121931 90%);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:10px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.media-card img{border-radius:10px;aspect-ratio:4/3;object-fit:cover}
.media-card.stagger{transform:translateY(16px)}

/* Sections */
.section{padding:3.5rem 0}
.section.alt{background:linear-gradient(180deg,#0d1326 0%, #0b1020 100%)}
.section h1,.section h2{font-size:clamp(1.4rem,2vw,2rem);margin:0 0 1rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.card{background:linear-gradient(180deg,#1b2a55 0%, #121931 100%);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:1rem}
.card h2,.card h3{margin-top:0}
.feature.highlight{border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.checklist{padding-left:1.2rem}
.checklist li{margin:.4rem 0}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1.2rem 0}
.stat{background:#121931;border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:1rem;text-align:center}
.stat-num{font-weight:800;font-size:1.6rem}
.stat-label{display:block;color:var(--muted)}

/* Reference */
.ref-list details{background:#121931;border:1px solid rgba(255,255,255,.06);border-radius:12px;margin:.6rem 0;padding:.7rem 1rem}
.ref-list summary{cursor:pointer;font-weight:600}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem}
.gallery figure{margin:0}
.gallery img{aspect-ratio:4/3;object-fit:cover;border-radius:10px;border:1px solid rgba(255,255,255,.08)}
.gallery figcaption{font-size:.9rem;color:var(--muted);margin-top:.3rem}

/* Contact */
.contact .map-embed{border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.1);margin:1rem 0}
.contact .map-embed iframe{width:100%;height:260px;border:0}
.contact-form{display:grid;gap:.8rem;background:#121931;border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:1rem}
.contact-form label{display:grid;gap:.3rem}
.contact-form input,.contact-form textarea{
  background:#0f1630;color:#fff;border:1px solid rgba(255,255,255,.1);
  border-radius:10px;padding:.8rem;outline: none;
}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--ring)}
.form-actions{display:flex;gap:1rem;align-items:center}

/* Footer */
.site-footer{border-top:1px solid rgba(255,255,255,.06);padding:1.4rem 0;background:#0b1020}
.footer-grid{display:flex;justify-content:space-between;gap:1rem;align-items:center;flex-wrap:wrap}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:.7rem 1rem;border-radius:12px;border:1px solid rgba(255,255,255,.1)}
.btn-primary{background:linear-gradient(180deg,#2eaadc,#1f83a8);color:#081220;font-weight:700}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.2)}

/* Responsive */
@media (max-width: 920px){
  .grid-2{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:repeat(2,1fr)}
  .nav{position:fixed;inset:60px 0 auto 0;background:#0b1020;display:none;flex-direction:column;padding:1rem;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav.open{display:flex}
  .nav-toggle{display:block}
}
@media (max-width: 560px){
  .cards{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr 1fr}
}

.logo {height: 60px; width: auto; display: block;}

.brand-logo img.logo {height: 60px; width: auto; display: block;}

/* --- Reference page visual tweaks --- */
.ref-search-wrap{display:flex;justify-content:center;margin:1rem 0;}
.ref-search{width:min(800px,100%);padding:.75rem 1rem;border-radius:12px;border:1px solid rgba(255,255,255,.15);background:#0f1630;color:#fff;outline:none}
.ref-search:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--ring)}
.ref-category{margin:1.5rem 0}
.ref-category h2{margin:.3rem 0 0.6rem}
.ref-year{background:#121931;border:1px solid rgba(255,255,255,.08);border-radius:12px;margin:.5rem 0;overflow:hidden}
.ref-year > summary{cursor:pointer;padding:.8rem 1rem;font-weight:600;display:flex;align-items:center;gap:.5rem}
.ref-year > summary::before{content:"▸";display:inline-block;transform:rotate(0deg);transition:transform .2s ease}
.ref-year[open] > summary::before{transform:rotate(90deg)}
.ref-year ul{margin:0;padding:.2rem 1.2rem 1rem}
.ref-year li{margin:.3rem 0;list-style:square inside;color:var(--text)}
.ref-empty{display:none;text-align:center;color:var(--muted);margin:1rem 0}

.logo{height:80px;width:auto;display:block}
.logo-footer{height:40px;width:auto;display:block}

.cards__block{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(120px,1fr));
  gap:1rem;
  align-items:center;
  justify-items:center;
}
.client-logo{
  max-width:120px;
  width:100%;
  height:auto;
  object-fit:contain;
  display:block;
}
/* Lightbox */
.lightbox{
  position:fixed; inset:0; display:none; z-index:9999;
  background:rgba(0,0,0,.88); align-items:center; justify-content:center; gap:1rem;
  padding:2rem;
}
.lightbox.open{ display:flex; }
.lightbox img{
  max-width:min(92vw, 1200px); max-height:80vh; object-fit:contain; border-radius:10px;
  border:1px solid rgba(255,255,255,.15); box-shadow:0 10px 40px rgba(0,0,0,.5);
}
.lightbox-close,.lightbox-prev,.lightbox-next{
  position:absolute; background:rgba(255,255,255,.12); color:#fff; border:0; cursor:pointer;
  width:44px; height:44px; border-radius:999px; display:grid; place-items:center; font-size:22px;
  transition:background .2s;
}
.lightbox-close{ top:16px; right:16px; }
.lightbox-prev{ left:16px; top:50%; transform:translateY(-50%); }
.lightbox-next{ right:16px; top:50%; transform:translateY(-50%); }
.lightbox-close:hover,.lightbox-prev:hover,.lightbox-next:hover{ background:rgba(255,255,255,.2); }
.lightbox-cap{ position:absolute; left:0; right:0; bottom:16px; text-align:center; color:#ccc; margin:0 .75rem; }

/* Dizalice topline – kartice prednosti */
.feature-grid{
  display:grid; gap:1rem; margin:2rem 0;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.feature-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px; padding:1rem 1.25rem;
}
.feature-card h3{ margin:.25rem 0 .5rem; font-size:1.05rem; }