/* Nextar redesign 2026 — "Kinetic minimal" (direction C, Inter) */
:root{
  --bg:#fafaf7; --ink:#101418; --muted:#61686f; --line:#e8e6e0;
  --brand:#103a71; --brand-dark:#0b2a52;
  --blue:#0e5fff; --red:#e8484e; --card:#ffffff;
  --radius:18px; --max:1200px;
  --font-display:"Inter",-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Inter",-apple-system,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);margin:0 0 .7rem;line-height:1.08;letter-spacing:-0.025em;font-weight:700}
p{margin:0 0 1rem;color:var(--muted)}
ul{color:var(--muted)}
.shell{width:min(100% - 3rem,var(--max));margin-inline:auto}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .marquee-track{animation:none!important}
}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-weight:600;font-size:.98rem;padding:.8rem 1.5rem;border-radius:10px;transition:transform .15s ease,box-shadow .15s ease;border:1.5px solid var(--brand);color:var(--brand);cursor:pointer}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{box-shadow:0 10px 24px rgba(16,58,113,.3);background:var(--brand-dark)}
.btn.light{background:#fff;color:var(--brand);border-color:#fff}
.btn .arrow{transition:transform .2s}
.btn:hover .arrow{transform:translateX(3px)}
.link-under{font-weight:600;font-size:.98rem;border-bottom:2px solid var(--red);padding-bottom:2px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,250,247,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:1.6rem;height:74px}
.nav .brand img{height:46px}
.nav-links{display:flex;gap:1.6rem;margin-left:auto;font-size:.93rem;font-weight:500;color:var(--muted)}
.nav-links a{position:relative}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--red);transition:width .2s}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--ink)}
.nav .btn{padding:.5rem 1.15rem;font-size:.88rem}
.nav-toggle{display:none;margin-left:auto;background:none;border:1.5px solid var(--line);border-radius:10px;font-size:1.2rem;padding:.3rem .6rem;cursor:pointer;color:var(--ink)}

/* language switch */
.lang-switch{position:relative}
.lang-switch-toggle{background:none;border:1px solid var(--line);border-radius:10px;padding:.35rem .7rem;cursor:pointer;font-size:1rem;line-height:1}
.lang-switch-menu{position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--line);border-radius:12px;padding:.4rem;display:flex;flex-direction:column;gap:.15rem;box-shadow:0 12px 32px rgba(16,20,24,.12)}
.lang-switch-menu[hidden]{display:none}
.lang-switch-menu a{padding:.3rem .55rem;border-radius:8px;font-size:1rem}
.lang-switch-menu a:hover{background:var(--bg)}

/* hero */
.hero{padding:100px 0 64px;position:relative}
.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);font-weight:800;max-width:19ch}
.hero h1 .hl{position:relative;white-space:nowrap}
.hero h1 .hl svg{position:absolute;left:0;bottom:-.12em;width:100%;height:.28em;overflow:visible}
.hero h1 .hl path{stroke:var(--red);stroke-width:7;fill:none;stroke-linecap:round;stroke-dasharray:600;stroke-dashoffset:600;animation:draw 1s .5s forwards ease-out}
@keyframes draw{to{stroke-dashoffset:0}}
.hero .lead{font-size:1.18rem;max-width:36rem;margin:1.4rem 0 2.2rem}
.hero-actions{display:flex;gap:1.2rem;align-items:center;flex-wrap:wrap}

/* page hero (subpages) */
.page-hero{padding:76px 0 24px}
.page-hero + section{padding-top:44px}
.page-hero h1{font-size:clamp(2.1rem,4.4vw,3.2rem);font-weight:800;max-width:22ch}
.page-hero .lead{font-size:1.12rem;max-width:38rem;margin:1.2rem 0 0}
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:1.4rem}
.crumbs a:hover{color:var(--ink)}
.crumbs .sep{margin:0 .5rem;color:var(--line)}

/* logo marquee */
.marquee{border-block:1px solid var(--line);padding:1.3rem 0;overflow:hidden;background:#fff}
.marquee-track{display:flex;gap:4rem;align-items:center;width:max-content;animation:scroll 28s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee img{height:20px;filter:grayscale(1);opacity:.55;transition:.2s}
.marquee img.sq{height:30px}
.marquee img:hover{filter:none;opacity:1}
@keyframes scroll{to{transform:translateX(-50%)}}

/* sections */
section{padding:96px 0}
section.flush{padding-top:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem;margin-bottom:2.6rem}
.section-head h2{font-size:clamp(1.9rem,3.4vw,2.7rem);max-width:22ch;margin:0}
.section-head p{max-width:26rem;margin:0}
.tag-mini{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--red);display:block;margin-bottom:.9rem}

/* bento grid */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:180px;gap:1rem}
.bcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;position:relative;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}
.bcard:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(16,20,24,.09)}
.bcard h3{font-size:1.15rem;margin-bottom:.4rem}
.bcard p{font-size:.9rem;margin:0}
.bcard.big{grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column;justify-content:flex-end;background:var(--brand-dark);color:#fff;border:none}
.bcard.big img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.bcard.big h3,.bcard.big p{position:relative}
.bcard.big h3{font-size:1.6rem;color:#fff}
.bcard.big p{color:#c3c9d2}
.bcard.tall{grid-row:span 2}
.bcard .metric{font-family:var(--font-display);font-size:2.6rem;font-weight:800;line-height:1;color:var(--ink)}
.bcard .metric em{font-style:normal;color:var(--red)}
.bcard.accent{background:var(--brand);border:none;color:#fff}
.bcard.accent h3{color:#fff}
.bcard.accent p{color:#cfdfff}
.bcard.accent .metric{color:#fff}

/* generic card grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(16,20,24,.09)}
.card h3{font-size:1.12rem}
.card p{font-size:.93rem;margin:0}
.card ul{margin:.4rem 0 0;padding-left:1.1rem;font-size:.93rem}
.card li{padding:.15rem 0}

/* product cards */
.prod-row{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.prod{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:2rem;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.prod:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(16,20,24,.09)}
.prod .lbl{font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:1rem}
.prod.featured{border:1.5px solid var(--ink)}
.prod.featured .lbl{color:var(--red)}
.prod h3{font-size:1.45rem}
.prod ul{list-style:none;margin:.3rem 0 1.8rem;padding:0}
.prod li{font-size:.93rem;color:var(--muted);padding:.4rem 0;border-bottom:1px dashed var(--line)}
.prod li:last-child{border:none}
.prod > a{margin-top:auto;font-weight:600;font-size:.95rem;display:inline-flex;gap:.4rem}
.prod > a .arrow{transition:transform .2s;color:var(--red)}
.prod > a:hover .arrow{transform:translateX(4px)}

/* numbered steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:2.5rem;counter-reset:step}
.step{position:relative;padding-top:1.2rem}
.step::before{counter-increment:step;content:"0" counter(step);font-family:var(--font-display);font-weight:800;font-size:3.4rem;line-height:1;color:transparent;-webkit-text-stroke:1.5px #c9cdd2;display:block;margin-bottom:.8rem;transition:.3s}
.step:hover::before{-webkit-text-stroke:1.5px var(--red)}
.step h3{font-size:1.15rem}
.step p{font-size:.94rem;margin:0}

/* compatibility chips */
.compat{display:flex;flex-wrap:wrap;gap:.7rem}
.compat span{display:inline-flex;align-items:center;gap:.65rem;background:#fff;border:1px solid var(--line);border-radius:10px;padding:.55rem 1.15rem;font-size:.87rem;font-weight:600;transition:transform .15s}
.compat span:hover{transform:translateY(-2px)}
.compat img{height:14px;filter:grayscale(1);opacity:.8}
.compat img.sq{height:22px}
.dot{width:.55rem;height:.55rem;border-radius:50%;display:inline-block}
.dot.ok{background:#18a45c}
.dot.dev{background:#e8a013}
.dot.plan{background:#a6adb6}

/* dark CTA band */
.cta{background:var(--brand-dark);border-radius:26px;padding:4.5rem 3rem;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(14,95,255,.35),transparent 65%);top:-200px;left:-100px}
.cta::after{content:"";position:absolute;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(232,72,78,.3),transparent 65%);bottom:-180px;right:-80px}
.cta h2{font-size:clamp(1.9rem,3.6vw,2.8rem);color:#fff;position:relative;z-index:1}
.cta p{color:#aab2bd;max-width:32rem;margin:0 auto 2rem;position:relative;z-index:1}
.cta .btn{position:relative;z-index:1}

/* subnav (underline tabs under page hero) */
.subnav{display:flex;gap:1.8rem;flex-wrap:wrap;margin:2rem 0 0;border-bottom:1px solid var(--line)}
.subnav a{font-size:.92rem;font-weight:600;color:var(--muted);padding:.2rem 0 .75rem;position:relative;transition:color .15s}
.subnav a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--red);transform:scaleX(0);transition:transform .2s;transform-origin:left}
.subnav a:hover{color:var(--ink)}
.subnav a:hover::after{transform:scaleX(1)}
.subnav a.active{color:var(--ink)}
.subnav a.active::after{transform:scaleX(1)}
.subnav-group{display:flex;gap:1.6rem;align-items:flex-end}
.subnav-group + .subnav-group{border-left:1px solid var(--line);padding-left:2.2rem}
.subnav-label{font-size:.68rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#a6adb6;padding:.45rem 0 .78rem}

/* split hero with visual */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.split .visual{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem}
.split .visual img{width:100%;max-height:320px;object-fit:contain}
.split .visual.dark{background:var(--brand-dark);border:none}

/* comparison table */
.table-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow-x:auto}
.table-card table{width:100%;border-collapse:collapse;font-size:.93rem;min-width:640px}
.table-card th{text-align:left;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:1rem 1.2rem;border-bottom:1px solid var(--line)}
.table-card td{padding:.9rem 1.2rem;border-bottom:1px solid var(--line);color:var(--muted);vertical-align:top}
.table-card tr:last-child td{border-bottom:none}
.table-card td:first-child{font-weight:600;color:var(--ink)}

/* forms */
.contact-form{display:grid;gap:.7rem;margin-top:1rem}
.contact-form input,.contact-form select,.contact-form textarea{font:inherit;font-size:.93rem;padding:.7rem .95rem;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
.contact-form textarea{min-height:110px;resize:vertical}
.contact-form :focus{outline:2px solid var(--brand);outline-offset:1px}

/* promo highlight */
.promo{border:1.5px solid var(--red);background:#fff;border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.4rem 0}
.promo strong{color:var(--red)}
.promo p{margin:.3rem 0 0;font-size:.92rem}

/* video card */
.video-card{background:var(--brand-dark);border-radius:var(--radius);padding:.8rem}
.video-card video{width:100%;border-radius:12px;display:block}

/* checklist */
.list-check{list-style:none;margin:0;padding:0}
.list-check li{padding:.4rem 0 .4rem 1.7rem;position:relative;font-size:.94rem;color:var(--muted)}
.list-check li::before{content:"✓";position:absolute;left:0;color:#18a45c;font-weight:700}

/* prose (subpage text blocks) */
.prose{max-width:44rem}
.prose h2{font-size:1.6rem;margin-top:2.4rem}
.prose h3{font-size:1.2rem;margin-top:1.8rem}

/* footer */
.site-footer{padding:3rem 0 2.4rem;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer-grid h4{font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);margin-bottom:.8rem}
.footer-grid a{display:block;padding:.2rem 0}
.footer-grid a:hover{color:var(--ink)}
.footer-grid img{height:40px;margin-bottom:.8rem}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;padding-top:1.6rem;border-top:1px solid var(--line);font-size:.85rem}

/* responsive */
@media(max-width:960px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .prod-row,.steps,.grid-3,.grid-2,.split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start}
  .nav-links{display:none;position:absolute;top:74px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:.6rem 1.5rem 1rem}
  .nav-links.open{display:flex}
  .nav-links a{padding:.55rem 0}
  .nav-toggle{display:block}
  .nav > .btn{display:none}
  section{padding:64px 0}
  .hero{padding:64px 0 48px}
}
@media(max-width:560px){
  .bento{grid-template-columns:1fr;grid-auto-rows:auto}
  .bcard.big{min-height:260px}
}

/* ================= Články (blog) ================= */
.article-wrap{max-width:760px;margin:0 auto;padding:0 20px}
.article-head{padding:4.5rem 0 0}
.article-head .tag-mini{margin-bottom:.9rem;display:inline-block}
.article-head h1{font-size:clamp(2rem,4.4vw,3rem);line-height:1.1;letter-spacing:-.02em;margin:0 0 1.1rem}
.article-perex{font-size:1.2rem;line-height:1.55;color:var(--muted);margin:0 0 1.5rem}
.article-meta{font-size:.9rem;color:var(--muted);margin:0;padding-bottom:1.4rem;border-bottom:1px solid var(--line)}
.article-body{font-size:1.06rem;line-height:1.72;padding-bottom:1rem}
.article-body h2{font-size:1.55rem;line-height:1.25;margin:2.9rem 0 .9rem;letter-spacing:-.01em}
.article-body h3{font-size:1.18rem;line-height:1.35;margin:2rem 0 .5rem}
.article-body p{margin:0 0 1.1rem}
.article-body ul,.article-body ol{margin:0 0 1.2rem;padding-left:1.4rem}
.article-body li{margin-bottom:.5rem}
.article-body figure{margin:2rem 0}
.article-body figure img{display:block;width:100%;height:auto;border-radius:var(--radius)}
.article-body figcaption{font-size:.88rem;color:var(--muted);margin-top:.7rem;line-height:1.5}
.article-body .note{background:#fff;border:1px solid var(--line);border-left:4px solid var(--red);
  padding:1.1rem 1.3rem;margin:1.8rem 0;border-radius:0 var(--radius) var(--radius) 0}
.article-body .note p:last-child{margin-bottom:0}
.article-body .term{font-weight:700;color:var(--brand)}
.article-foot{margin:2.6rem 0 0;padding-top:1.6rem;border-top:1px solid var(--line);
  font-size:.92rem;color:var(--muted)}

/* výpis článků */
.article-list{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.article-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;text-decoration:none;color:inherit;
  transition:transform .18s ease,box-shadow .18s ease}
.article-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px -22px rgba(16,20,24,.5)}
.article-card img{display:block;width:100%;aspect-ratio:16/8;object-fit:cover}
.article-card .ac-body{padding:1.3rem 1.4rem 1.5rem;display:flex;flex-direction:column;flex:1}
.article-card h3{font-size:1.16rem;line-height:1.3;margin:.55rem 0 .5rem;letter-spacing:-.01em}
.article-card p{font-size:.95rem;color:var(--muted);line-height:1.55;margin:0 0 1rem}
.article-card .ac-more{margin-top:auto;font-weight:600;color:var(--red);font-size:.93rem}

@media(max-width:700px){
  .article-head{padding-top:2.6rem}
  .article-body{font-size:1.02rem}
}