/* Chytrý domov — CZ dark tech dashboard. charcoal + teal/lime. prefix: ch */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f1620; --bg2:#16202c; --panel:#1b2735; --ink:#e8eef5; --ink2:#93a4b6;
  --teal:#2fd4c4; --lime:#a9e34b; --blue:#4aa8ff; --line:#26303d; --amber:#ffb454;
  --shadow:0 18px 44px rgba(0,0,0,.45);
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"Segoe UI",system-ui,-apple-system,Roboto,sans-serif;font-size:17px;line-height:1.7}
h1,h2,h3,h4{font-weight:800;line-height:1.18;letter-spacing:-.02em}
.mono{font-family:"Consolas","SF Mono",ui-monospace,monospace}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}
.tag{display:inline-block;font-family:Consolas,monospace;color:var(--teal);border:1px solid var(--line);background:var(--bg2);padding:5px 12px;border-radius:6px;font-size:12.5px;letter-spacing:.06em}
.btn{display:inline-block;background:var(--teal);color:#06121a;font-weight:800;padding:13px 26px;border:0;border-radius:9px;cursor:pointer;font-size:16px;transition:.18s}
.btn:hover{box-shadow:0 0 0 3px rgba(47,212,196,.25);transform:translateY(-2px)}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--teal);color:var(--teal)}

.ch-nav{position:sticky;top:0;z-index:50;background:rgba(15,22,32,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.ch-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.ch-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink)}
.ch-logo .d{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--teal),var(--blue));display:grid;place-items:center;color:#06121a;font-size:16px}
.ch-links{display:flex;gap:24px}
.ch-links a{color:var(--ink2);font-size:15px;font-weight:600}
.ch-links a:hover{color:var(--teal)}
.ch-burger{display:none;font-size:26px;background:0;border:0;color:var(--ink);cursor:pointer}
@media(max-width:900px){.ch-links{display:none}.ch-burger{display:block}
  .ch-links.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:var(--bg2);padding:16px 22px;gap:14px;border-bottom:1px solid var(--line)}}

section{padding:66px 0}
.head{max-width:720px;margin-bottom:36px}
.head h2{font-size:34px;margin:12px 0}
.head p{color:var(--ink2)}

/* hero */
.ch-hero{padding:70px 0 56px;background:radial-gradient(1000px 400px at 80% -10%,rgba(47,212,196,.14),transparent),var(--bg)}
.ch-hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.ch-hero h1{font-size:50px;letter-spacing:-1px;margin:16px 0 18px}
.ch-hero h1 span{background:linear-gradient(90deg,var(--teal),var(--lime));-webkit-background-clip:text;background-clip:text;color:transparent}
.ch-hero .lead{font-size:19px;color:var(--ink2);margin-bottom:26px}
.ch-hero .cta{display:flex;gap:13px;flex-wrap:wrap}
.ch-hero-img{position:relative}
.ch-hero-img img{border-radius:16px;aspect-ratio:4/3;object-fit:cover;width:100%;box-shadow:var(--shadow);border:1px solid var(--line)}
@media(max-width:900px){.ch-hero .wrap{grid-template-columns:1fr}.ch-hero h1{font-size:37px}}

/* metric tiles */
.ch-tiles .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ch-tile{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px}
.ch-tile .n{font-family:Consolas,monospace;font-size:30px;font-weight:800;color:var(--lime)}
.ch-tile .l{font-size:13px;color:var(--ink2);margin-top:4px}
@media(max-width:680px){.ch-tiles .wrap{grid-template-columns:1fr 1fr}}

/* split */
.ch-split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.ch-split img{border-radius:14px;aspect-ratio:4/3;object-fit:cover;width:100%;border:1px solid var(--line);box-shadow:var(--shadow)}
.ch-feat{display:grid;gap:14px;margin-top:16px}
.ch-feat li{list-style:none;display:flex;gap:12px;align-items:flex-start;color:var(--ink2)}
.ch-feat .ic{flex:0 0 26px;height:26px;border-radius:7px;background:rgba(47,212,196,.15);color:var(--teal);display:grid;place-items:center;font-size:14px;font-weight:800}
@media(max-width:820px){.ch-split{grid-template-columns:1fr}}

/* areas grid */
.ch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ch-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.2s}
.ch-card:hover{border-color:var(--teal);transform:translateY(-4px)}
.ch-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.ch-card .b{padding:18px 20px}
.ch-card h3{font-size:18px;margin-bottom:6px}
.ch-card p{font-size:14.5px;color:var(--ink2)}
.ch-card .k{font-family:Consolas,monospace;font-size:12px;color:var(--lime)}
@media(max-width:860px){.ch-grid{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.ch-grid{grid-template-columns:1fr}}

/* ranking mechanic */
.ch-rank{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px;display:grid;grid-template-columns:1fr 1.1fr;gap:30px}
.ch-rank h3{font-size:20px;margin-bottom:6px}
.ch-rank .hint{color:var(--ink2);font-size:14px;margin-bottom:18px}
.ch-appls{display:flex;flex-wrap:wrap;gap:10px}
.ch-appl{background:var(--bg2);border:1.5px solid var(--line);color:var(--ink);border-radius:10px;padding:9px 14px;cursor:pointer;font-size:14px;transition:.15s;display:flex;align-items:center;gap:8px}
.ch-appl:hover{border-color:var(--teal)}
.ch-appl.on{background:rgba(47,212,196,.16);border-color:var(--teal);color:var(--teal)}
.ch-bars{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:20px;min-height:230px}
.ch-bars .empty{color:var(--ink2);font-size:14.5px;text-align:center;padding-top:70px}
.ch-bar{margin-bottom:12px}
.ch-bar .t{display:flex;justify-content:space-between;font-size:13.5px;margin-bottom:5px}
.ch-bar .t b{font-family:Consolas,monospace;color:var(--lime)}
.ch-bar .track{height:12px;background:var(--bg2);border-radius:8px;overflow:hidden}
.ch-bar .fill{height:100%;background:linear-gradient(90deg,var(--teal),var(--lime));border-radius:8px;transition:width .4s}
.ch-total{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-weight:800}
.ch-total b{font-family:Consolas,monospace;color:var(--amber);font-size:20px}
@media(max-width:760px){.ch-rank{grid-template-columns:1fr}}

/* steps */
.ch-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ch-step{background:var(--bg2);border:1px solid var(--line);border-radius:14px;padding:24px}
.ch-step .num{font-family:Consolas,monospace;font-size:28px;color:var(--teal);font-weight:800}
.ch-step h3{font-size:18px;margin:8px 0 6px}
.ch-step p{font-size:14.5px;color:var(--ink2)}
@media(max-width:820px){.ch-steps{grid-template-columns:1fr}}

/* table */
.ch-tab{width:100%;border-collapse:collapse;background:var(--panel);border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.ch-tab th,.ch-tab td{padding:13px 15px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.ch-tab th{background:var(--bg2);color:var(--teal);font-family:Consolas,monospace}
.ch-tab td:first-child{font-weight:700}
.ch-tab .mono{color:var(--lime)}
.ch-scroll{overflow-x:auto}

/* accordion */
.ch-acc{max-width:840px}
.ch-ac{background:var(--panel);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.ch-ac summary{padding:18px 22px;font-weight:700;font-size:16.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
.ch-ac summary::-webkit-details-marker{display:none}
.ch-ac summary:after{content:"+";color:var(--teal);font-size:22px}
.ch-ac[open] summary:after{content:"–"}
.ch-ac .body{padding:0 22px 20px;color:var(--ink2);font-size:15.5px}

/* gallery */
.ch-gal{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.ch-gal img{aspect-ratio:1/1;object-fit:cover;width:100%;border-radius:10px;border:1px solid var(--line);transition:.2s}
.ch-gal img:hover{border-color:var(--teal)}
@media(max-width:860px){.ch-gal{grid-template-columns:repeat(3,1fr)}}

/* myths */
.ch-myths{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.ch-myth{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}
.ch-myth .m{color:#ff7a7a;font-weight:800;font-size:14px}
.ch-myth .f{color:var(--lime);font-weight:800;font-size:14px;margin-top:8px}
.ch-myth p{font-size:14.5px;color:var(--ink2);margin-top:4px}
@media(max-width:700px){.ch-myths{grid-template-columns:1fr}}

/* forms */
.ch-form{display:grid;gap:14px;max-width:560px}
.ch-form.two{grid-template-columns:1fr 1fr}
.ch-form label{font-size:13px;font-weight:700;color:var(--ink2);display:block;margin-bottom:5px}
.ch-form input,.ch-form textarea,.ch-form select{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:9px;font-size:15px;font-family:inherit;background:var(--bg2);color:var(--ink)}
.ch-form input:focus,.ch-form textarea:focus{outline:0;border-color:var(--teal)}
.ch-form .full{grid-column:1/-1}
.ch-form .err{border-color:#ff7a7a!important}
.ch-ok{background:rgba(169,227,75,.12);color:var(--lime);border:1px solid rgba(169,227,75,.35);padding:12px 16px;border-radius:9px;font-size:14.5px;display:none}
.ch-ok.show{display:block}
@media(max-width:620px){.ch-form.two{grid-template-columns:1fr}}

.ch-news{background:linear-gradient(120deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:18px;padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.ch-news h2{font-size:29px}
@media(max-width:760px){.ch-news{grid-template-columns:1fr;padding:30px}}

.ch-contact{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.ch-contact .info li{list-style:none;padding:11px 0;border-bottom:1px solid var(--line);color:var(--ink2)}
.ch-contact .info b{color:var(--ink)}
@media(max-width:800px){.ch-contact{grid-template-columns:1fr}}

.ch-foot{background:#0b1017;border-top:1px solid var(--line);color:var(--ink2);padding:54px 0 26px}
.ch-foot .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.ch-foot h4{color:var(--ink);margin-bottom:14px}
.ch-foot a{color:var(--ink2);display:block;padding:4px 0}
.ch-foot a:hover{color:var(--teal)}
.ch-foot .logo{font-size:21px;font-weight:800;color:var(--ink);margin-bottom:10px}
.ch-copy{border-top:1px solid var(--line);margin-top:30px;padding-top:18px;font-size:13px;text-align:center}
@media(max-width:760px){.ch-foot .wrap{grid-template-columns:1fr 1fr}}

.ch-legal{max-width:760px;margin:0 auto;padding:54px 22px}
.ch-legal .back{color:var(--teal);font-weight:700;display:inline-block;margin-bottom:22px}
.ch-legal h1{font-size:33px;margin-bottom:18px}
.ch-legal h2{font-size:20px;margin:26px 0 8px;color:var(--ink)}
.ch-legal p,.ch-legal li{color:var(--ink2);margin-bottom:10px}
.ch-legal ul{margin-left:20px}
.cookie-bar{position:fixed;bottom:16px;left:16px;right:16px;max-width:560px;margin:0 auto;background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:16px 20px;border-radius:12px;display:flex;gap:16px;align-items:center;justify-content:space-between;box-shadow:var(--shadow);z-index:100;font-size:14px}
.cookie-bar button{background:var(--teal);color:#06121a;border:0;padding:9px 18px;border-radius:8px;cursor:pointer;font-weight:800}
.cookie-bar.hide{display:none}