/* =========================================================
   SAO plus s.r.o. – hlavní styl
   Moderní, čistý průmyslový vzhled. Značková barva: azurová.
   ========================================================= */

:root{
  --brand:#00c6ff;          /* značková azurová (highlighty) */
  --brand-strong:#0096c7;   /* tlačítka / odkazy na bílé (kontrast) */
  --brand-dark:#00799c;     /* hover */
  --ink:#0f1b26;            /* hlavní text / tmavé sekce */
  --ink-2:#33414f;          /* sekundární text */
  --muted:#6b7887;
  --line:#e5ebf1;
  --bg:#ffffff;
  --bg-soft:#f4f8fb;
  --bg-dark:#0e1a24;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(15,27,38,.08);
  --shadow-lg:0 20px 50px rgba(15,27,38,.14);
  --container:1180px;
  --sp:clamp(3.5rem,7vw,6rem); /* svislý rytmus sekcí */
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--ink-2);
  background:var(--bg);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-strong);text-decoration:none;transition:color .2s}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.5vw,3.1rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem)}
h3{font-size:1.3rem}
p{margin:0 0 1rem}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}

/* ---------- Tlačítka ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  padding:.85em 1.6em;border-radius:999px;font-weight:600;font-size:.98rem;
  border:2px solid transparent;cursor:pointer;transition:all .2s;white-space:nowrap;
}
.btn-primary{background:var(--brand-strong);color:#fff;border-color:var(--brand-strong)}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-outline{background:transparent;color:var(--brand-strong);border-color:var(--brand-strong)}
.btn-outline:hover{background:var(--brand-strong);color:#fff}
.btn-lg{padding:1em 2em;font-size:1.05rem}

/* ---------- Hlavička ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);transition:box-shadow .25s;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(15,27,38,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:1.5rem}
.logo img{height:40px;width:auto}
.main-nav{display:flex;align-items:center;gap:1.75rem}
.main-nav>ul{display:flex;align-items:center;gap:1.5rem;list-style:none;margin:0;padding:0}
.main-nav a{color:var(--ink);font-weight:600;font-size:.98rem;padding:.4rem 0;position:relative}
.main-nav>ul>li>a:hover,.main-nav a.is-active{color:var(--brand-strong)}
.main-nav a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--brand)}
.nav-cta{color:#fff!important}

/* dropdown */
.has-sub{position:relative}
.caret{font-size:.7em;opacity:.7}
.sub-menu{
  position:absolute;top:calc(100% + 12px);left:0;min-width:290px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);
  list-style:none;margin:0;padding:.4rem;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all .2s;
}
.has-sub:hover .sub-menu,.has-sub:focus-within .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.sub-menu li a{display:block;padding:.6rem .8rem;border-radius:8px;font-weight:500;color:var(--ink-2)}
.sub-menu li a:hover{background:var(--bg-soft);color:var(--brand-strong)}

/* hamburger */
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav-toggle span{width:26px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background-color:var(--bg-dark);background-size:cover;background-position:center;
  padding:clamp(4rem,10vw,7.5rem) 0;
}
.hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(9,22,32,.86),rgba(9,22,32,.55));z-index:0}
.hero .container{position:relative;z-index:1;max-width:900px}
.hero .eyebrow{display:inline-block;color:var(--brand);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.8rem;margin-bottom:1rem}
.hero h1{color:#fff;max-width:16ch}
.hero p{font-size:1.2rem;color:rgba(255,255,255,.9);max-width:56ch;margin-bottom:2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:2.5rem}
.hero-badges{display:flex;flex-wrap:wrap;gap:.75rem 2rem;padding-top:1.75rem;border-top:1px solid rgba(255,255,255,.18)}
.hero-badges span{display:flex;align-items:center;gap:.6rem;font-weight:600;color:#fff;font-size:.98rem}
.hero-badges .dot{width:9px;height:9px;border-radius:50%;background:var(--brand);flex:none}

/* ---------- Sekce ---------- */
section{scroll-margin-top:90px}
.section{padding:var(--sp) 0}
.section.soft{background:var(--bg-soft)}
.section.dark{background:var(--bg-dark);color:rgba(255,255,255,.82)}
.section.dark h2,.section.dark h3{color:#fff}
.section-head{max-width:720px;margin:0 auto 3rem;text-align:center}
.section-head .eyebrow{color:var(--brand-strong);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.8rem}
.section-head.light .eyebrow{color:var(--brand)}
.section-head p{color:var(--muted);font-size:1.08rem;margin:0}
.section-head.light p{color:rgba(255,255,255,.75)}

/* ---------- Dlaždice služeb ---------- */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.service-card .thumb{aspect-ratio:16/10;overflow:hidden}
.service-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.service-card:hover .thumb img{transform:scale(1.06)}
.service-card .body{padding:1.5rem 1.5rem 1.7rem;display:flex;flex-direction:column;flex:1}
.service-card h3{margin-bottom:.5rem}
.service-card p{color:var(--muted);font-size:.98rem;flex:1}
.service-card .more{margin-top:1rem;font-weight:700;color:var(--brand-strong);display:inline-flex;align-items:center;gap:.4rem}
.service-card .more::after{content:"→";transition:transform .2s}
.service-card:hover .more::after{transform:translateX(4px)}

/* ---------- O nás / split ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.split .media img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;object-fit:cover}
.split h2{margin-bottom:1rem}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1.25rem;margin-top:1.75rem}
.stat{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-sm);padding:1.1rem 1.25rem}
.stat b{display:block;font-size:1.7rem;color:var(--brand-strong);line-height:1;font-weight:800}
.stat span{font-size:.92rem;color:var(--muted)}

/* feature boxy (na podstránkách) */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:2.5rem}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow)}
.feature .ico{width:52px;height:52px;border-radius:12px;background:var(--brand);display:grid;place-items:center;color:#fff;font-size:1.4rem;margin-bottom:1rem}
.feature h3{font-size:1.12rem;margin-bottom:.4rem}
.feature p{color:var(--muted);font-size:.96rem;margin:0}

/* seznam s odškrtnutím */
.check-list{list-style:none;padding:0;margin:1rem 0 0;display:grid;gap:.7rem}
.check-list li{display:flex;gap:.75rem;align-items:flex-start;color:var(--ink-2)}
.check-list .ci{flex:none;width:24px;height:24px;color:var(--brand-strong);margin-top:1px}
.check-list .ci svg{width:24px;height:24px}

/* certifikáty */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cert-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem;text-align:center;box-shadow:var(--shadow)}
.cert-card .ico{width:60px;height:60px;margin:0 auto 1rem;border-radius:14px;background:var(--rgba-brand,rgba(0,198,255,.12));color:var(--brand-strong);display:grid;place-items:center}
.cert-card .ico svg{width:30px;height:30px}
.cert-card h3{font-size:1.12rem;margin-bottom:.4rem}
.cert-card p{color:var(--muted);font-size:.95rem;margin-bottom:1rem}
.cert-soon{display:inline-block;font-size:.78rem;font-weight:600;color:var(--muted);background:var(--bg-soft);border:1px dashed var(--line);border-radius:999px;padding:.3rem .9rem}
@media(max-width:960px){.cert-grid{grid-template-columns:1fr}}

/* ---------- Partneři ---------- */
.partners{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:1.25rem}
.partner{
  background:#fff;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-sm);
  padding:1.1rem 1.6rem;min-width:180px;flex:1 1 200px;max-width:230px;text-align:center;
}
.partner img{height:52px;width:auto;margin:0 auto .6rem;object-fit:contain;filter:none}
.partner span{display:block;color:var(--ink-2);font-weight:600;font-size:.95rem}

/* ---------- Galerie ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gallery-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.gitem{position:relative;aspect-ratio:1;overflow:hidden;border-radius:var(--radius-sm);cursor:pointer;background:#dfe7ee}
.gitem img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gitem:hover img{transform:scale(1.08)}
.gitem .cap{
  position:absolute;inset:auto 0 0 0;padding:.9rem .8rem .7rem;color:#fff;font-size:.85rem;font-weight:600;
  background:linear-gradient(transparent,rgba(9,22,32,.85));opacity:0;transform:translateY(6px);transition:.25s;
}
.gitem:hover .cap{opacity:1;transform:translateY(0)}
.gallery-more{text-align:center;margin-top:2.5rem}

/* ---------- CTA pruh ---------- */
.cta-band{background:linear-gradient(120deg,var(--brand-dark),var(--brand-strong));color:#fff;text-align:center}
.cta-band h2{color:#fff;margin-bottom:.5rem}
.cta-band p{color:rgba(255,255,255,.9);font-size:1.1rem;margin-bottom:1.75rem}

/* ---------- Page hero (podstránky) ---------- */
.page-hero{
  position:relative;overflow:hidden;background-color:var(--bg-dark);
  background-size:cover;background-position:center;color:#fff;padding:clamp(3rem,7vw,5rem) 0;
}
.page-hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(9,22,32,.9),rgba(0,121,156,.72));z-index:0}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{color:#fff;margin-bottom:.5rem}
.breadcrumb{list-style:none;display:flex;flex-wrap:wrap;gap:.5rem;padding:0;margin:0;font-size:.92rem;color:rgba(255,255,255,.75)}
.breadcrumb a{color:rgba(255,255,255,.75)}
.breadcrumb a:hover{color:#fff}
.breadcrumb li+li::before{content:"/";margin-right:.5rem;opacity:.5}

/* ---------- Kontakt / formulář ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(2rem,5vw,3.5rem);align-items:start}
.info-list{list-style:none;padding:0;margin:0;display:grid;gap:1.25rem}
.info-list li{display:flex;gap:1rem;align-items:flex-start}
.info-list .ico{width:46px;height:46px;flex:none;border-radius:12px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:1.2rem}
.info-list b{display:block;color:var(--ink)}
.info-list a{color:var(--ink-2)}
.info-list a:hover{color:var(--brand-strong)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(1.5rem,3vw,2.4rem)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{margin-bottom:1.1rem}
.field label{display:block;font-weight:600;color:var(--ink);margin-bottom:.4rem;font-size:.95rem}
.field input,.field textarea{
  width:100%;padding:.85rem 1rem;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  font:inherit;color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--rgba-brand,rgba(0,198,255,.15))}
.field textarea{resize:vertical;min-height:130px}
.hp{position:absolute;left:-9999px}   /* honeypot proti spamu */
.form-note{font-size:.85rem;color:var(--muted);margin-top:.5rem}
.alert{padding:1rem 1.2rem;border-radius:var(--radius-sm);margin-bottom:1.4rem;font-weight:500}
.alert-ok{background:#e6f7ed;border:1px solid #b7e4c7;color:#12633a}
.alert-err{background:#fdeaea;border:1px solid #f5c2c2;color:#a11}
.field-err{display:block;color:#c0392b;font-size:.83rem;margin-top:.35rem;font-weight:500}
.field input:invalid{box-shadow:none}
.map-section iframe{filter:grayscale(.1)}

/* ---------- Patička ---------- */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.72);padding-top:clamp(3rem,6vw,4.5rem)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2.5rem;padding-bottom:3rem}
.footer-logo{margin-bottom:1.1rem}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:1rem;letter-spacing:.02em}
.site-footer p{font-size:.95rem;line-height:1.7}
.site-footer a{color:rgba(255,255,255,.72)}
.site-footer a:hover{color:var(--brand)}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:.55rem;font-size:.95rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:1.4rem 0;font-size:.9rem;color:rgba(255,255,255,.55)}

/* ---------- Scroll-top ---------- */
.scrolltop{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-strong);color:#fff;display:grid;place-items:center;font-size:1.3rem;
  box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;z-index:90;
}
.scrolltop.show{opacity:1;visibility:visible;transform:translateY(0)}
.scrolltop:hover{background:var(--brand-dark);color:#fff}

/* ---------- Lightbox ---------- */
.lb{position:fixed;inset:0;background:rgba(9,16,22,.94);display:none;place-items:center;z-index:1000;padding:2rem}
.lb.open{display:grid}
.lb img{max-width:92vw;max-height:82vh;border-radius:8px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lb-cap{position:absolute;bottom:26px;left:0;right:0;text-align:center;color:#fff;font-weight:600}
.lb-close,.lb-nav{position:absolute;background:rgba(255,255,255,.12);border:0;color:#fff;cursor:pointer;
  width:52px;height:52px;border-radius:50%;font-size:1.6rem;display:grid;place-items:center;transition:.2s}
.lb-close:hover,.lb-nav:hover{background:rgba(255,255,255,.25)}
.lb-close{top:24px;right:24px}
.lb-prev{left:24px;top:50%;transform:translateY(-50%)}
.lb-next{right:24px;top:50%;transform:translateY(-50%)}

/* ---------- Responsivita ---------- */
@media(max-width:960px){
  .services-grid,.features{grid-template-columns:repeat(2,1fr)}
  .gallery-grid{grid-template-columns:repeat(3,1fr)}
  .split,.contact-grid{grid-template-columns:1fr}
  .split .media{order:-1}
}
@media(max-width:860px){
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;align-items:stretch;
    gap:0;padding:1rem 22px 1.5rem;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);
    transform:translateY(-120%);transition:transform .3s;max-height:calc(100vh - 74px);overflow:auto;
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav>ul{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .main-nav>ul>li{border-bottom:1px solid var(--line)}
  .main-nav>ul>li>a{display:block;padding:.9rem 0}
  .main-nav a.is-active::after{display:none}
  .sub-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;
    min-width:0;padding:0 0 .6rem .6rem;display:none}
  .has-sub.open .sub-menu{display:block}
  .nav-cta{margin-top:1rem;justify-content:center;text-align:center}
}
@media(max-width:640px){
  body{font-size:16px}
  .services-grid,.features,.gallery-grid,.stats,.form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:1.75rem}
  .hero-actions .btn{flex:1 1 100%;justify-content:center}
}
@media(max-width:440px){ .footer-grid{grid-template-columns:1fr} }