/* Veřejná prezentace "Martínkovo nejen TT" — sdílené pro úvod i podstránky */
:root { --tmava:#1d232b; --seda:#6a7280; --antracit:#2b313a; --car:#c0392b; --cara2:#e2e6ea; --bg2:#f6f7f9; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; background:#fff; color:var(--tmava); font-family:'Open Sans',system-ui,Arial,sans-serif; line-height:1.6; overflow-x:hidden; }
a { color: inherit; }
.material-symbols-outlined { vertical-align: middle; }

/* horní lišta */
header.bar { position: sticky; top:0; z-index:50; background:rgba(255,255,255,0.95); backdrop-filter:saturate(1.5) blur(6px); border-bottom:1px solid var(--cara2); }
header.bar .in { max-width:1100px; margin:0 auto; display:flex; align-items:center; gap:16px; padding:10px 18px; }
header.bar .znacka { font-family:'Oswald',sans-serif; font-weight:600; font-size:18px; letter-spacing:0.5px; white-space:nowrap; text-decoration:none; cursor:pointer; }
header.bar .znacka .nejen { font-size:0.6em; font-weight:400; color:var(--seda); text-transform:lowercase; letter-spacing:1px; margin:0 2px; }
header.bar nav { margin-left:auto; display:flex; gap:4px; flex-wrap:wrap; }
header.bar nav a { font-size:13px; color:var(--seda); text-decoration:none; padding:6px 10px; border-radius:7px; white-space:nowrap; }
header.bar nav a:hover { background:var(--antracit); color:#fff; }
header.bar .hamburger { display:none; margin-left:auto; background:none; border:0; cursor:pointer; color:var(--tmava); padding:4px 6px; border-radius:8px; line-height:0; }
header.bar .hamburger .material-symbols-outlined { font-size:30px; }
header.bar .hamburger:hover { background:var(--bg2); }

/* hero (úvod) */
.hero { position:relative; min-height:40vh; display:flex; align-items:center; justify-content:center; text-align:center;
        background:#20262e center/cover no-repeat; color:#fff; padding:48px 18px; }
.hero::after { content:''; position:absolute; inset:0; background:linear-gradient(180deg,rgba(20,24,30,0.55),rgba(20,24,30,0.75)); }
.hero .obsah { position:relative; z-index:1; }
.hero h1 { font-family:'Oswald',sans-serif; font-weight:600; font-size:clamp(38px,8vw,78px); margin:0; letter-spacing:1px; text-transform:uppercase; max-width:100%; min-width:0; overflow-wrap:break-word; }
.hero h1 .nejen { display:inline-block; font-size:0.42em; font-weight:400; vertical-align:middle; opacity:0.85; text-transform:lowercase; letter-spacing:2px; margin:0 0.15em; }
.hero .podtitul { margin-top:14px; font-size:clamp(14px,2.6vw,20px); letter-spacing:4px; text-transform:uppercase; opacity:0.9; }

/* sekce */
main { max-width:1100px; margin:0 auto; padding:0 18px; }
section { padding:46px 0; border-top:1px solid var(--cara2); }
section:first-of-type { border-top:0; }
.nadpis { font-family:'Oswald',sans-serif; font-weight:600; font-size:clamp(24px,4.5vw,34px); margin:0 0 4px; display:flex; align-items:center; gap:12px; }
.nadpis .ico { color:var(--car); font-size:30px; }
.nadpis::after { content:''; flex:1; height:2px; background:var(--cara2); }
.perex { color:var(--seda); margin:0 0 20px; max-width:720px; }
.podnadpis { font-family:'Oswald',sans-serif; font-weight:500; font-size:16px; letter-spacing:1px; color:var(--seda); text-transform:uppercase; margin:26px 0 10px; }
.podnadpis .mer { color:var(--tmava); }

/* mřížka fotek */
.mrizka { display:grid; grid-template-columns:repeat(auto-fill,minmax(190px,1fr)); gap:10px; }
.dlazdice { position:relative; display:block; aspect-ratio:4/3; overflow:hidden; border-radius:10px; background:var(--bg2); }
.dlazdice img { width:100%; height:100%; object-fit:cover; display:block; transition:transform .35s ease; }
.dlazdice:hover img { transform:scale(1.05); }
/* popisek fotky – vyjede zdola po najetí */
.dlazkap { position:absolute; left:0; right:0; bottom:0; z-index:2; padding:8px 10px;
           font-size:12.5px; line-height:1.3; color:#fff; text-align:left;
           background:linear-gradient(to top, rgba(0,0,0,0.82), rgba(0,0,0,0.45) 60%, transparent);
           transform:translateY(100%); transition:transform .25s ease; pointer-events:none; }
.dlazdice:hover .dlazkap { transform:translateY(0); }
@media (hover:none){ .dlazkap { transform:translateY(0); background:linear-gradient(to top, rgba(0,0,0,0.75), transparent); } }
.prazdno { display:flex; align-items:center; justify-content:center; gap:10px; min-height:120px; border:1.5px dashed var(--cara2);
           border-radius:10px; color:#9aa2ab; font-size:14px; }
.prazdno .material-symbols-outlined { font-size:22px; }

/* čerchovaný rámeček kolem obsahu sekce (měřítka) na úvodu */
.ramec { border:1.5px dashed var(--cara2); border-radius:12px; padding:14px; }
.ramec .prazdno { border:0; min-height:100px; }

/* náhledové kartičky modelů (teaser na úvodu) */
.karty { display:flex; flex-wrap:wrap; justify-content:center; gap:12px; }
.karta { display:block; flex:0 1 calc((100% - 24px)/3); min-width:0; max-width:calc((100% - 24px)/3); text-decoration:none; color:inherit; border-radius:12px; overflow:hidden; background:var(--bg2); border:1px solid var(--cara2); transition:transform .2s ease, box-shadow .2s ease; }
.karta:hover { transform:translateY(-3px); box-shadow:0 10px 22px rgba(0,0,0,0.08); }
.karta .foto { position:relative; display:block; aspect-ratio:4/3; background:#e9ecef center/cover no-repeat; transition:transform .35s ease; }
.karta:hover .foto { transform:scale(1.05); }
.karta .foto.bezfoto { display:flex; align-items:center; justify-content:center; color:#aab2bb; }
.karta .foto.bezfoto .material-symbols-outlined { font-size:30px; }
/* odznak "Rozpracováno" na fotce karty */
.rozprac-odznak { position:absolute; left:8px; bottom:8px; z-index:2; width:30px; height:30px; border-radius:50%;
                  background:var(--car); color:#fff; display:flex; align-items:center; justify-content:center;
                  box-shadow:0 2px 6px rgba(0,0,0,0.3); }
.rozprac-odznak .material-symbols-outlined { font-size:19px; }
.karta .nazev { display:block; padding:11px 13px; font-family:'Oswald',sans-serif; font-weight:500; font-size:15px; }
.vice { display:inline-block; margin-top:16px; color:var(--car); font-weight:600; text-decoration:none; }
.vice:hover { text-decoration:underline; }

/* deník (zatím info) */
.denik { background:var(--bg2); border-radius:12px; padding:20px 22px; color:var(--seda); display:flex; gap:14px; align-items:flex-start; }
.denik .material-symbols-outlined { color:var(--car); }

/* podstránka modelů */
.podhlava { max-width:1100px; margin:0 auto; padding:26px 18px 6px; }
.zpet { display:inline-flex; align-items:center; gap:6px; color:var(--seda); text-decoration:none; font-size:14px; }
.zpet:hover { color:var(--tmava); }
.podhlava h1 { font-family:'Oswald',sans-serif; font-weight:600; font-size:clamp(26px,5vw,38px); margin:8px 0 0; text-transform:uppercase; letter-spacing:0.5px; }
.podhlava h1 .mer { color:var(--car); }
.podhlava .popis-strana { color:var(--seda); margin:10px 0 0; max-width:760px; }
.podhlava .popis-strana p { margin:0 0 8px; }
.podhlava .popis-strana a { color:var(--car); }
/* rychlé odkazy na modely (pod nadpisem podstránky) */
.modelnav { display:flex; flex-wrap:wrap; gap:10px 14px; margin:16px 0 2px; }
.modelnav a { display:inline-block; padding:6px 14px; font-size:13px; text-decoration:none; color:var(--tmava);
              background:var(--bg2); border:1px solid var(--cara2); border-radius:20px; transition:background .15s ease, border-color .15s ease, color .15s ease; }
.modelnav a:hover { background:var(--car); border-color:var(--car); color:#fff; }
.model { padding:30px 0; border-top:1px solid var(--cara2); scroll-margin-top:72px; }
.model:first-of-type { border-top:0; }
.model h3 { font-family:'Oswald',sans-serif; font-weight:600; font-size:22px; margin:0 0 4px; }
.model h3 .vyrobce { color:var(--car); margin-left:4px; }
.model .rozprac { display:inline-flex; align-items:center; gap:5px; margin:2px 0 8px; color:var(--car);
                  font-family:'Oswald',sans-serif; font-weight:500; font-size:13px; letter-spacing:1px; text-transform:uppercase; }
.model .rozprac .material-symbols-outlined { font-size:18px; }
.model .titulek { font-family:'Oswald',sans-serif; font-weight:400; letter-spacing:0.5px; color:var(--seda); font-size:13px; text-transform:uppercase; margin:0 0 8px; }
.model .popis { color:var(--seda); margin:0 0 14px; max-width:760px; }
.model .popis p { margin:0 0 10px; }
.model .popis p:last-child { margin-bottom:0; }
.model .popis a { color:var(--car); }
.model .popis img, .podhlava .popis-strana img { vertical-align:-3px; } /* emotikony v řádku textu */
.model .popis ul, .model .popis ol { margin:0 0 10px; padding-left:22px; }
/* YouTube videa – mřížka pod fotkami, dvě vedle sebe (16:9, responzivní) */
.videa-mrizka { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; margin-top:16px; }
.video-polozka .video-pop { margin-top:6px; font-size:13px; color:var(--seda); }
.video-embed { position:relative; width:100%; margin:0; border-radius:10px; overflow:hidden; background:#000; }
.video-embed::before { content:''; display:block; padding-top:56.25%; } /* 16:9 */
.video-embed iframe { position:absolute; inset:0; width:100%; height:100%; border:0; }
@media (max-width:640px){ .videa-mrizka { grid-template-columns:1fr; } }
/* tabulky v popisu (model i sekce) – čistý vzhled s šedým záhlavím */
.model .popis table, .podhlava .popis-strana table {
    border-collapse:collapse; width:auto; max-width:100%; margin:6px 0 14px; font-size:14px;
    background:#fff; border:1px solid var(--cara2); border-radius:10px; overflow:hidden; color:var(--tmava);
}
.model .popis th, .model .popis td,
.podhlava .popis-strana th, .podhlava .popis-strana td {
    border:0; border-bottom:1px solid var(--cara2); padding:9px 16px; text-align:left; vertical-align:top;
}
.model .popis tr:last-child td, .podhlava .popis-strana tr:last-child td { border-bottom:0; }
.model .popis thead th, .podhlava .popis-strana thead th,
.model .popis th, .podhlava .popis-strana th {
    background:var(--bg2); font-family:'Oswald',sans-serif; font-weight:600; color:var(--tmava);
}
@media (max-width:640px){
    .model .popis table, .podhlava .popis-strana table { font-size:13px; }
    .model .popis th, .model .popis td,
    .podhlava .popis-strana th, .podhlava .popis-strana td { padding:7px 10px; }
}
.prazdno-velke { color:var(--seda); padding:28px 0; }
.prazdno-velke code { background:var(--bg2); padding:2px 6px; border-radius:5px; }

/* kontaktní formulář */
.kontakt { max-width:620px; padding-bottom:10px; }
.kontakt-uvod { color:var(--seda); margin:0 0 18px; }
.kontakt-form label { display:block; margin:0 0 14px; font-size:14px; color:var(--tmava); font-weight:600; }
.kontakt-form .nepovinne { font-weight:400; color:var(--seda); font-size:12px; }
.kontakt-form input, .kontakt-form textarea { display:block; width:100%; margin-top:6px; padding:10px 12px; border:1px solid var(--cara2); border-radius:8px; font:inherit; font-weight:400; background:#fff; }
.kontakt-form input:focus, .kontakt-form textarea:focus { outline:none; border-color:var(--car); }
.kontakt-form textarea { resize:vertical; }
.kontakt-form .past { position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
.kontakt-send { background:var(--car); color:#fff; border:0; border-radius:8px; padding:11px 22px; font:inherit; font-weight:600; cursor:pointer; }
.kontakt-send:hover { background:#a93226; }
.kontakt-ok { display:flex; gap:12px; align-items:flex-start; background:#eafaf0; border:1px solid #bfe8cf; color:#1e7e45; border-radius:10px; padding:16px 18px; margin:0 0 14px; }
.kontakt-ok .material-symbols-outlined { color:#2fae4a; }
.kontakt-chyba { display:flex; gap:8px; align-items:center; background:#fdecea; border:1px solid #f5b7b1; color:#b03a2e; border-radius:8px; padding:10px 14px; margin:0 0 14px; font-size:14px; }
.kontakt-cap { margin:2px 0 16px; }
.kontakt-cap .cap-nadpis { font-size:14px; font-weight:600; color:var(--tmava); margin-bottom:8px; }
.kontakt-cap .cap-img { display:block; border:1px solid var(--cara2); border-radius:8px; margin-bottom:8px; image-rendering:crisp-edges; }
.kontakt-form .kontakt-cap input[type=text] { width:200px; max-width:100%; }

/* patička */
footer { border-top:1px solid var(--cara2); color:var(--seda); font-size:13px; text-align:center; padding:28px 18px 40px; }

/* plovoucí šipka "nahoru" – bílý kruh, tlustý černý obrys, červená šipka; vpravo na úrovni konce menu */
.nahoru { position:fixed; right:max(18px, calc((100vw - 1100px)/2 + 18px)); bottom:24px; z-index:90;
          width:52px; height:52px; border:3px solid #111; border-radius:50%;
          background:#fff; color:var(--car); cursor:pointer; display:flex; align-items:center; justify-content:center;
          box-shadow:0 5px 16px rgba(0,0,0,0.28); opacity:0; transform:translateY(12px); pointer-events:none;
          transition:opacity .2s ease, transform .2s ease, background .15s ease, color .15s ease; }
.nahoru.on { opacity:1; transform:translateY(0); pointer-events:auto; }
.nahoru:hover { background:var(--car); color:#fff; }
.nahoru .material-symbols-outlined { font-size:28px; font-weight:700; }

/* lightbox */
#lb { position:fixed; inset:0; z-index:100; display:none; flex-direction:column; align-items:center; justify-content:center; gap:12px; background:rgba(12,14,18,0.92); padding:20px; }
#lb.on { display:flex; }
#lb img { max-width:94vw; max-height:84vh; border-radius:8px; }
#lb .zavri { position:absolute; top:16px; right:20px; color:#fff; font-size:34px; cursor:pointer; line-height:1; }
.lb-cap { color:#e9edf2; font-size:14px; text-align:center; max-width:90vw; }
.lb-cap:empty { display:none; }
#lb .lb-nav { position:fixed; top:50%; transform:translateY(-50%); color:#fff; font-size:44px; cursor:pointer; opacity:0.75; user-select:none; padding:8px; }
#lb .lb-nav:hover { opacity:1; }
#lb .lb-prev { left:6px; }
#lb .lb-next { right:6px; }
#lb.jedna .lb-nav { display:none; }
@media (max-width:640px){ #lb .lb-nav { font-size:34px; } }

/* === mobil: menší hero + hamburger menu (na konci, ať přebije základní pravidla) === */
@media (max-width:640px){ .mrizka { grid-template-columns:repeat(2,1fr); gap:10px; } }
@media (max-width:720px){
    header.bar .in { position:relative; }
    header.bar .hamburger { display:inline-flex; }
    header.bar nav { display:none; position:absolute; top:100%; left:0; right:0; margin:0; flex-direction:column; gap:2px;
                     background:var(--seda); box-shadow:0 12px 24px rgba(0,0,0,0.18); padding:8px; }
    header.bar nav.open { display:flex; }
    header.bar nav a, header.bar nav a:hover { font-size:15px; padding:13px 14px; border-radius:8px; color:#fff; background:transparent; }
    .hero { min-height:0; padding:34px 16px; }
    .hero h1 { font-size:clamp(30px,10vw,46px); }
    .hero .podtitul { letter-spacing:3px; font-size:13px; }
    /* na mobilu/tabletu jen 2 kartičky na úvodu (třetí schovat) */
    .karty { gap:10px; }
    .karty .karta { flex-basis:calc((100% - 10px)/2); max-width:calc((100% - 10px)/2); }
    .karty .karta:nth-child(n+3){ display:none; }
}