:root{
  --bg:#ffffff;
  --text:#0f1216;
  --muted:#5a6673;
  --brand:#b30000;        /* hasičská červená */
  --brand-700:#7d0000;
  --surface:#f7f7f8;
  --border:#e6e6e8;
  --shadow:0 8px 24px rgba(0,0,0,.08);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f1113;
    --text:#e9edf1;
    --muted:#a6b0bb;
    --surface:#171a1d;
    --border:#2a2f36;
    --shadow:0 10px 28px rgba(0,0,0,.4);
  }
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.55 system-ui,Segoe UI,Roboto,Arial}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{padding:24px 16px}
.wrap{max-width:1050px;margin:0 auto;padding:0 16px}

/* Header */
.site-header{position:sticky;top:0;z-index:10;background:color-mix(in oklab, var(--bg) 92%, #fff 8%);border-bottom:1px solid var(--border);backdrop-filter:saturate(1.2) blur(6px)}
.site-header .wrap{display:flex;align-items:center;gap:16px;min-height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text)}
.brand img{border-radius:8px}
.burger{margin-left:auto;font-size:1.25rem;background:none;border:0;cursor:pointer}
.site-nav{display:flex;gap:14px}
.site-nav a{padding:8px 12px;border-radius:10px}
.site-nav a:hover{background:var(--surface)}
.site-nav .cta{background:var(--brand);color:#fff}
.site-nav .cta:hover{background:var(--brand-700);text-decoration:none}
@media (max-width:860px){
  .site-nav[hidden]{display:none}
  .site-nav{position:absolute;right:12px;top:62px;background:var(--bg);border:1px solid var(--border);box-shadow:var(--shadow);padding:10px;border-radius:12px;flex-direction:column;min-width:220px}
}

/* Hero */
.hero{background:linear-gradient(135deg, color-mix(in oklab, var(--brand) 14%, var(--bg) 86%), var(--surface));border-bottom:1px solid var(--border)}
.hero-inner{max-width:1050px;margin:0 auto;padding:36px 16px}
.hero h1{font-size:clamp(1.8rem, 3.6vw, 2.8rem);margin:.2em 0}
.lead{color:var(--muted);max-width:70ch}
.kpis{display:flex;gap:14px;flex-wrap:wrap;margin:10px 0;color:var(--text)}
.kpis span{background:var(--surface);border:1px solid var(--border);padding:6px 10px;border-radius:12px}

/* Section & cards */
.section{padding:28px 0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cards{grid-template-columns:1fr}}
.card{background:var(--bg);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:14px}
.card h3{margin:.4rem 0}
.card:hover{outline:2px solid color-mix(in oklab, var(--brand) 35%, var(--border) 65%)}

/* Technika */
.tech .tech-img{border-radius:12px;margin-bottom:8px}
.specs{margin:.4rem 0 0 1rem;color:var(--muted)}

/* Galerie (lightbox) */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.gallery a{display:block;border-radius:12px;overflow:hidden;border:1px solid var(--border)}
.gallery img{aspect-ratio:4/3;object-fit:cover}
.lb-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.8);display:none;align-items:center;justify-content:center;z-index:50}
.lb-backdrop.open{display:flex}
.lb-backdrop img{max-width:92vw;max-height:88vh;border-radius:12px}

/* Form + buttons */
.form input,.form textarea{width:100%;padding:10px;border-radius:12px;border:1px solid var(--border);background:var(--bg);color:var(--text)}
.form label{display:block;margin:.6rem 0}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:12px;padding:10px 14px;cursor:pointer}
.btn:hover{background:var(--brand-700)}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn.small{padding:6px 10px;font-size:.9rem}

/* Footer */
.site-footer{border-top:1px solid var(--border);background:var(--surface);margin-top:30px}
.site-footer .wrap{padding:20px 16px}
.site-footer .grid{display:grid;grid-template-columns:2fr 1fr 2fr;gap:16px}
@media (max-width:860px){.site-footer .grid{grid-template-columns:1fr}}
.social a{margin-right:10px}
.cookiebar{position:fixed;left:12px;right:12px;bottom:12px;background:var(--bg);border:1px solid var(--border);box-shadow:var(--shadow);padding:12px;border-radius:12px;display:flex;align-items:center;justify-content:space-between;gap:12px}
@media (max-width:640px){.cookiebar{flex-direction:column;align-items:flex-start}}