/* mereniradioaktivity.cz - statická verze, redesign. Bez externích fontů a knihoven. */
:root{--red:#b81007;--red-d:#8f0c05;--yellow:#ffd400;--ink:#1f2328;--muted:#5b6470;--bg:#f3f4f6;--card:#fff;--line:#e3e6ea;--r:14px;--shadow:0 1px 2px rgba(16,24,40,.06),0 6px 20px rgba(16,24,40,.07)}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--red);text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.7rem,3.2vw,2.3rem)}
h2{font-size:clamp(1.2rem,2.2vw,1.5rem)}
p{margin:0 0 1em}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 20px}
:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}

/* hlavička */
#header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);border-top:4px solid var(--red)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand img{width:46px;height:46px;object-fit:contain}
.brand strong{display:block;font-size:1.15rem;line-height:1.2}
.brand small{display:block;color:var(--muted);font-size:.8rem}
.menu{display:flex;flex-wrap:wrap;gap:4px}
.menu a{display:block;padding:9px 14px;border-radius:999px;color:#3b434d;font-weight:600;font-size:.95rem}
.menu a:hover{background:#f0f1f3;text-decoration:none}
.menu a.active{background:var(--red);color:#fff}

main{flex:1 0 auto}
/* oznámení */
.oznameni{background:#fff4c2;border-bottom:1px solid #e0b800;color:#4a3b00;padding:12px 0}
.oznameni p{margin:0}
.oznameni p+p{margin-top:.35em}

/* hero */
.hero{position:relative;color:#fff;background:#243040 url(img/slide-1.jpg) center 35%/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,24,32,.88) 0%,rgba(18,24,32,.62) 55%,rgba(18,24,32,.25) 100%)}
.hero-in{position:relative;padding:72px 20px 80px;max-width:1120px}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:.35em}
.eyebrow{margin:0 0 .6em;font-size:.85rem;letter-spacing:.08em;text-transform:uppercase;color:var(--yellow);font-weight:700}
.hero-lead{max-width:640px;font-size:clamp(1.05rem,2vw,1.25rem);color:#eef1f4}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin:1.6em 0 0}
.btn{display:inline-block;padding:12px 24px;border-radius:999px;background:var(--red);color:#fff;font-weight:700;border:2px solid var(--red);transition:background .15s,transform .15s}
.btn:hover{background:var(--red-d);border-color:var(--red-d);text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:transparent;border-color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}

/* rozvržení */
.home-main{padding-top:28px;padding-bottom:40px}
.home-main>*+*{margin-top:28px}
.page{padding-top:24px;padding-bottom:44px}
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:10px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:clamp(20px,3.2vw,36px)}
.panel.two{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.page .panel+.gates,.page .panel+.panel{margin-top:24px}
.prose h2{font-size:clamp(1.15rem,2.1vw,1.45rem);margin-bottom:.7em}
.lead{font-size:1.1rem;font-weight:600}
.prose p:last-child{margin-bottom:0}
.badge{display:inline-block;background:var(--yellow);color:#2a2300;font-weight:700;padding:9px 16px;border-radius:999px}

/* karty */
.tiles,.gates{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.gates.two-up{grid-template-columns:repeat(2,1fr)}
.page .gates{margin-top:24px}
.page .gates.two-up{margin-top:0}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;color:var(--ink);transition:transform .18s,box-shadow .18s}
.card:hover{transform:translateY(-3px);box-shadow:0 2px 4px rgba(16,24,40,.08),0 14px 30px rgba(16,24,40,.13);text-decoration:none}
.card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.tile img{aspect-ratio:16/8;object-position:center}
.card-body{display:block;padding:14px 18px 18px}
.card-body strong{display:block;font-size:1.1rem}
.card-body small{display:block;color:var(--muted);margin-top:2px;font-size:.9rem}
.card:hover .card-body small{color:var(--red)}
.mapcard img{aspect-ratio:auto;width:193px;max-width:100%;height:auto;margin:22px auto 8px;object-fit:contain}

/* dokumenty, mapa */
.doc{display:flex;align-items:center;gap:16px;color:var(--ink)}
.doc:hover{text-decoration:none}
.doc:hover strong{color:var(--red)}
.doc-ico{flex:none;display:grid;place-items:center;width:52px;height:64px;border-radius:8px;background:var(--red);color:#fff;font-weight:800;font-size:.8rem}
.doc strong{display:block}
.doc small{color:var(--muted)}
.mapbox{display:grid;place-items:center;background:#fafbfc;border:1px solid var(--line);border-radius:12px;padding:24px}

/* galerie */
.gallery{max-width:640px;margin:0 auto}
.gallery-slides{position:relative;background:#111;border-radius:12px;overflow:hidden;aspect-ratio:500/312}
.gallery-slides ul{height:100%}
.gallery-slide{display:none;position:relative;height:100%}
.gallery-slide.on,.gallery-slide:first-child:last-child{display:block}
.gallery-slide img{width:100%;height:100%;object-fit:cover}
.gallery-slide .overlay{position:absolute;left:0;right:0;bottom:0;margin:0;padding:10px 16px;color:#fff;font-size:1rem;font-weight:600;background:linear-gradient(transparent,rgba(0,0,0,.7))}
.gallery-slides button{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border:0;border-radius:50%;background:rgba(0,0,0,.5);color:#fff;font-size:28px;line-height:1;cursor:pointer;display:grid;place-items:center;padding:0 0 3px}
.gallery-slides button:hover{background:var(--red)}
.gal-prev{left:10px}.gal-next{right:10px}
.gallery-thumbs ul{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.gallery-thumbs li{flex:0 0 calc(20% - 7px)}
.gallery-thumbs a{display:block;border-radius:8px;overflow:hidden;opacity:.6;outline-offset:0;border:2px solid transparent;transition:opacity .15s}
.gallery-thumbs a:hover{opacity:1}
.gallery-thumbs a.on{opacity:1;border-color:var(--red)}
.gallery-thumbs img{width:100%}

/* patička */
#footer{background:#1b2027;color:#c6ccd4;margin-top:auto;font-size:.92rem}
.foot{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;padding-top:36px;padding-bottom:36px}
#footer strong{color:#fff}
#footer a{color:#ffd9d6}

@media (max-width:860px){
 .bar{flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
 .menu{width:100%}
 .tiles,.gates,.gates.two-up{grid-template-columns:1fr}
 .panel.two{grid-template-columns:1fr;gap:20px}
 .foot{grid-template-columns:1fr;gap:20px}
 .hero-in{padding:48px 20px 52px}
 .hero::before{background:linear-gradient(rgba(18,24,32,.8),rgba(18,24,32,.7))}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}