/* Layout: jednosloupcová aplikace, max 720 px, spodní lišta jako v terénní appce; měřicí hodnoty v monospace jako na displeji přístroje */
/* Vzhled NEXE REV (rodina webů NEXE): světlé pozadí, Space Grotesk / Inter / JetBrains Mono, tmavě žlutá s přechodem.
   --signal (žlutá) zůstává jen pro displej přístroje a cestu proudu ve schématech. */
:root{
  --bg:#f7f9fc; --surface:#ffffff; --surface-2:#eef3fa; --line:#e3e8f0;
  --fg:#0b1220; --muted:#4a5875;
  --ink:#8a5c00;          /* odkazy a akcent – tmavě žlutá NEXE REV */
  --blue:#d99a00; --grad:linear-gradient(100deg,#d99a00,#f2b705);
  --top:#ffffff; --lcd:#0d1b2a;
  --signal:#f2b705; --on-signal:#1b1500;
  --ok:#1f7a45; --ok-bg:#e4f5ea; --bad:#b3261e; --bad-bg:#fbe8e6; --warn-bg:#fff6d6;
  --w-l:#7a4a1e; --w-n:#1f5fbf; --w-pe:#2f8f3a; --w-pe2:#e2c400;
  --f-disp:"Space Grotesk",Inter,system-ui,sans-serif;
  --f-body:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --tint:#fff4d1;
  --r:16px;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0b1220; --surface:#121b2e; --surface-2:#1a2640; --line:#25324d;
  --fg:#e7edf7; --muted:#9fb0cc; --ink:#ffcc33; --tint:#3a2d0a; --top:#0e1626; --lcd:#060c18; --signal:#f5c431; --on-signal:#1b1500;
  --ok:#5fcf8a; --ok-bg:#12301f; --bad:#ff8a80; --bad-bg:#3a1a18; --warn-bg:#33290c;
  --w-l:#c88a52; --w-n:#6fa2ff; --w-pe:#5fbf5a; --w-pe2:#e6cf3a; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0b1220; --surface:#121b2e; --surface-2:#1a2640; --line:#25324d;
  --fg:#e7edf7; --muted:#9fb0cc; --ink:#ffcc33; --tint:#3a2d0a; --top:#0e1626; --lcd:#060c18; --signal:#f5c431; --on-signal:#1b1500;
  --ok:#5fcf8a; --ok-bg:#12301f; --bad:#ff8a80; --bad-bg:#3a1a18; --warn-bg:#33290c;
  --w-l:#c88a52; --w-n:#6fa2ff; --w-pe:#5fbf5a; --w-pe2:#e6cf3a; color-scheme:dark}

html{height:100%}body{min-height:100%} /* ne height: záhlaví (sticky) by na dlouhých stránkách odjelo */
[hidden]{display:none!important}
body{background:var(--bg);color:var(--fg);font:16px/1.6 var(--f-body);margin:0;background:radial-gradient(1100px 560px at 88% -8%,rgba(242,183,5,.13),transparent 62%),radial-gradient(900px 520px at -8% 38%,rgba(217,154,0,.08),transparent 60%),url(/img/pozadi-sit.svg),var(--bg);background-attachment:fixed} /* jednotné pozadí NEXE REV: žlutý nádech a síťový motiv koule */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--top)}
*{box-sizing:border-box}
h1,h2,h3{font-family:var(--f-disp);line-height:1.2;text-wrap:balance;margin:0;letter-spacing:-.01em}
a{color:var(--ink)}
button{font:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}

/* záhlaví jako na webech NEXE: bílé, logo s koulí */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:color-mix(in srgb,var(--top) 92%,transparent);backdrop-filter:blur(10px);color:var(--fg);border-bottom:1px solid var(--line);
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:6px}
.top-in{max-width:760px;margin:0 auto;display:flex;align-items:center;gap:10px;min-height:52px}
.brand{display:flex;align-items:center;text-decoration:none;flex:none}
.brand canvas{width:50px;height:50px;margin-right:-6px}
.brand img{height:34px;width:auto;display:block}
.ttl{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font:600 12px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink);padding-left:6px}
.ttl a{color:inherit;text-decoration:none}
.xp{font:600 13px var(--f-mono);color:var(--ink);background:var(--surface-2);border:1px solid var(--line);padding:4px 10px;border-radius:99px;white-space:nowrap}
.back{background:none;border:0;color:var(--fg);font-size:22px;line-height:1;padding:4px 6px 4px 0}
@media (max-width:420px){.brand img{height:28px}.brand canvas{width:42px;height:42px}.ttl{display:none}.top-in{justify-content:space-between}}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .brand img{filter:brightness(0) invert(1) opacity(.92)}}

main{max-width:760px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:20px 104px;display:flex;flex-direction:column;gap:18px}

.nav{position:fixed;left:0;right:0;bottom:0;z-index:5;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(10px);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom,0px);padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px)}
.nav-in{max-width:760px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr)}
.nav a{display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 4px 10px;text-decoration:none;color:var(--muted);font-size:12px;font-weight:600}
.nav a span{font-family:var(--f-mono);font-size:14px;font-weight:600;min-width:42px;text-align:center;border-radius:8px;padding:1px 6px}
.nav a.on{color:var(--ink)}
.nav a.on span{background:var(--grad);color:#1b1500}

/* úvod kurzu – tmavá karta jako závěrečná výzva na webu */
.hero{background:linear-gradient(160deg,#0b1220,#13284a);color:#fff;border-radius:20px;padding:22px;display:flex;flex-direction:column;gap:12px;box-shadow:0 30px 60px -40px rgba(11,18,32,.6)}
.hero h1{font-size:26px}
.hero p{margin:0;color:#c3d0e4}
.hero .sec-t{color:#ffd23f}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.35)}
.bar{height:8px;background:rgba(127,127,127,.28);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--grad)}
.row{display:flex;gap:10px;flex-wrap:wrap}
.btn{border:0;border-radius:10px;padding:11px 18px;font-weight:700;background:var(--grad);color:#1b1500;text-decoration:none;display:inline-block;box-shadow:0 8px 22px -12px rgba(217,154,0,.8)}
.btn:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line);box-shadow:none}
.btn.ghost:hover{border-color:var(--ink);color:var(--ink);filter:none}
.btn.ink{background:var(--fg);color:var(--bg);box-shadow:none}
.btn[disabled]{opacity:.45;cursor:default}

.sec-t{font:600 12px var(--f-mono);text-transform:uppercase;letter-spacing:.12em;color:var(--ink);margin:6px 0 -6px}
.list{display:flex;flex-direction:column;gap:8px}
.item{display:grid;grid-template-columns:52px 1fr auto;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px;text-decoration:none;color:inherit;box-shadow:0 6px 22px rgba(20,30,60,.04)}
.item:hover{border-color:var(--ink)}
.glyph{width:52px;height:52px;border-radius:12px;background:var(--tint);display:grid;place-items:center;font-family:var(--f-mono);font-weight:600;font-size:15px;color:var(--ink)}
.item.done .glyph{background:var(--ok-bg);color:var(--ok)}
.item h3{font-size:16px}
.item p{margin:2px 0 0;font-size:13px;color:var(--muted)}
.item>div{min-width:0}
.score{font-family:var(--f-mono);font-size:13px;color:var(--muted);white-space:nowrap}
.soon{opacity:.6}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{font-size:12px;font-weight:600;border-radius:99px;padding:3px 10px;background:var(--tint);color:var(--ink)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:0 6px 22px rgba(20,30,60,.05)}
.lesson h1{font-size:24px;margin-bottom:4px}
.lesson h2{font-size:19px;margin:22px 0 8px}
.lesson p,.lesson li{max-width:65ch}
.lesson ul,.lesson ol{padding-left:22px}
.lesson table{border-collapse:collapse;font-size:14px;min-width:100%}
.lesson th,.lesson td{border-bottom:1px solid var(--line);padding:7px 10px 7px 0;text-align:left;vertical-align:top}
.lesson th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.tw{overflow-x:auto;margin:10px 0}
.v{font-family:var(--f-mono);font-variant-numeric:tabular-nums;font-weight:600;white-space:nowrap}
.box{border-radius:8px;padding:12px 14px;margin:14px 0;border-left:4px solid}
.box.tip{background:var(--ok-bg);border-color:var(--ok)}
.box.pozor{background:var(--bad-bg);border-color:var(--bad)}
.box.praxe{background:var(--warn-bg);border-color:var(--signal)}
.box.dilna{background:var(--tint);border-color:var(--blue)}
.box b.t{display:block;font-family:var(--f-disp);margin-bottom:4px}
.box p{margin:4px 0}
.dia{margin:14px 0;overflow-x:auto}
.dia svg{display:block;width:100%;max-width:560px;min-width:320px;height:auto}
.dia figcaption{font-size:13px;color:var(--muted);margin-top:4px}
svg .wl{stroke:var(--w-l)} svg .wn{stroke:var(--w-n)} svg .wpe{stroke:var(--w-pe)} svg .wpe2{stroke:var(--w-pe2)}
svg .ln{fill:none;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
svg .thin{fill:none;stroke:var(--muted);stroke-width:1.5}
svg .dev{fill:var(--surface-2);stroke:var(--ink);stroke-width:2}
svg .dsp{fill:var(--lcd)}
svg .t{fill:var(--fg);font:12px var(--f-body)}
svg .ts{fill:var(--muted);font:11px var(--f-body)}
svg .tm{fill:var(--signal);font:600 13px var(--f-mono)}
svg .acc{fill:none;stroke:var(--signal);stroke-width:2.5;stroke-dasharray:6 4}
svg .gnd{fill:none;stroke:var(--muted);stroke-width:2}
svg .dot{fill:var(--fg)}

.pager{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

.q{display:flex;flex-direction:column;gap:12px}
.q .meta{font-family:var(--f-mono);font-size:13px;color:var(--muted)}
.q h2{font-size:19px;font-family:var(--f-body);font-weight:700}
.opt{display:block;width:100%;text-align:left;background:var(--surface);border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;color:var(--fg)}
.opt:hover:not([disabled]){border-color:var(--ink)}
.opt.ok{border-color:var(--ok);background:var(--ok-bg)}
.opt.bad{border-color:var(--bad);background:var(--bad-bg)}
.opt[disabled]{cursor:default}
.why{border-radius:8px;padding:12px 14px;background:var(--surface-2)}
.why b{font-family:var(--f-disp)}
.big{font-family:var(--f-mono);font-size:44px;font-weight:600;font-variant-numeric:tabular-nums}
.pass{color:var(--ok)} .fail{color:var(--bad)}
.timer{font-family:var(--f-mono);font-variant-numeric:tabular-nums}

.calc{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.calc label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted);font-weight:600}
.calc select,.calc input{font:16px var(--f-mono);padding:9px 10px;border-radius:10px;border:1px solid #d3dbe8;background:var(--surface);color:var(--fg);min-width:0}
.res{font-family:var(--f-mono);font-size:15px;background:var(--surface-2);border-radius:8px;padding:12px;margin-top:10px;font-variant-numeric:tabular-nums}
.res .v{font-size:22px}
.muted{color:var(--muted);font-size:14px}
@media (prefers-reduced-motion:no-preference){.opt,.item{transition:border-color .15s,background .15s}}
/* zaškrtávací souhlas (registrace, platba) */
.calc label.chk,label.chk{display:flex;flex-direction:row;align-items:flex-start;gap:10px;font-weight:400;font-size:14px;color:var(--fg)}
label.chk input{width:20px;height:20px;flex:none;margin-top:2px;padding:0;accent-color:#d99a00}
/* objednávka plného kurzu */
.btn.btn-lg{padding:14px 22px;font-size:16px;border-radius:12px;font-family:var(--f-body)}
.btn.wide{width:100%;display:block;text-align:center}
.hdr-obj{flex:none;background:var(--grad);color:#1b1500;text-decoration:none;font-weight:700;font-size:14px;padding:8px 14px;border-radius:10px;box-shadow:0 6px 16px -8px rgba(217,154,0,.8)}
.hdr-obj[hidden]{display:none}
.objbox{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;border:2px solid var(--blue);background:linear-gradient(180deg,var(--tint),var(--surface) 70%)}
.objbox h3{font-size:17px}
.order{border:2px solid var(--blue);display:flex;flex-direction:column;gap:14px}
.order-top{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;align-items:flex-start}
.order-top h2{font-size:20px}
.order-price{font:700 34px/1 var(--f-disp);font-variant-numeric:tabular-nums;white-space:nowrap;text-align:right}
.order-price small{display:block;font:500 13px var(--f-body);color:var(--muted);margin-top:6px}
.order-list{margin:0;padding-left:20px;display:grid;gap:6px}
@media (max-width:420px){.order-price{text-align:left}.hdr-obj{padding:7px 11px;font-size:13px}}
/* dlouhé vzorce v odstavci se zalamují (na mobilu nepřetékají) */
p .v,li .v{white-space:normal}
/* cvičný tester (pristroj.js) – obecný přístroj, ne kopie konkrétního výrobce */
.sim{margin:18px 0;border-radius:18px;background:#1c232e;color:#e7edf7;padding:14px;box-shadow:0 18px 40px -24px rgba(11,18,32,.7);border:3px solid #d99a00}
.sim-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:10px}
.sim-head b{font:700 15px var(--f-disp);letter-spacing:.04em;text-transform:uppercase;color:#f2b705}
.sim-head span{font:500 11px var(--f-mono);color:#93a1b8}
.sim-fn{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.sim-fn button{border:1px solid #3a4558;background:#262f3d;color:#cfd8e6;border-radius:8px;padding:6px 10px;font:600 12px var(--f-mono)}
.sim-fn button.on{background:#f2b705;color:#1b1500;border-color:#f2b705}
.sim-body{display:grid;gap:12px}
.sim-lcd{background:#c9d6a8;color:#1e2a12;border-radius:10px;padding:10px 12px;font-family:var(--f-mono);box-shadow:inset 0 2px 8px rgba(0,0,0,.35);min-height:112px}
.sim-l1{font-size:11px;letter-spacing:.06em;text-transform:uppercase;opacity:.75}
.sim-hl{font-size:30px;font-weight:600;line-height:1.25;font-variant-numeric:tabular-nums;margin:4px 0}
.sim-sub{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:12.5px}
.sim-set .calc label{color:#b8c4d6}
.sim-set .calc select{background:#262f3d;color:#e7edf7;border-color:#3a4558}
.sim-btns{display:flex;gap:10px;flex-wrap:wrap}
.sim-test{border:0;border-radius:50px;padding:12px 26px;font:700 16px var(--f-mono);letter-spacing:.08em;background:#f2b705;color:#1b1500;box-shadow:0 4px 0 #a86b00}
.sim-test:active{transform:translateY(2px);box-shadow:0 2px 0 #a86b00}
.sim-test[disabled]{opacity:.6}
.sim-nul{border:1px solid #3a4558;background:#262f3d;color:#e7edf7;border-radius:50px;padding:10px 16px;font:600 13px var(--f-body)}
.sim-nul[hidden]{display:none}
.sim-con{font-size:13.5px;color:#c3cfdf;margin:12px 0 0}
.sim-res{margin-top:8px;font-size:14px}
.sim-res p{margin:4px 0}
.sim-res .pass{color:#6fe39a}.sim-res .fail{color:#ff8f86}
/* otázky TIČR */
.ticr-hledat{font:16px var(--f-body);padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--fg);width:100%}
.ticr-q{padding:0}
.ticr-q summary{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:start;padding:14px 16px;cursor:pointer;list-style:none;font-weight:600}
.ticr-q summary::-webkit-details-marker{display:none}
.ticr-q[open] summary{border-bottom:1px solid var(--line)}
.ticr-q > :not(summary){margin-left:16px;margin-right:16px}
.ticr-q > :last-child{margin-bottom:14px}
.ticr-c{font:600 13px var(--f-mono);color:var(--ink);background:var(--tint);border-radius:8px;min-width:34px;text-align:center;padding:2px 6px}
.ticr-ref{font-size:12.5px;margin:10px 16px 8px}
.ticr-q[hidden]{display:none}
/* nejmenší telefony (320–370 px): záhlaví se vejde na jeden řádek */
@media (max-width:370px){
  .top-in{gap:6px}
  .brand canvas{display:none}
  .brand img{height:26px}
  .hdr-obj{padding:6px 9px;font-size:12.5px}
  .xp{padding:3px 7px;font-size:11.5px}
  main{padding-left:12px;padding-right:12px}
  .card{padding:16px}
  .sim{padding:10px}
}
/* dlouhé adresy a označení norem ve zdrojích se zalomí, místo aby přetékaly */
.ticr-q,.why,.lesson,.q h2,.opt,.sim-res,.muted{overflow-wrap:anywhere}
.list,.card,main>*{min-width:0}

/* online zkouška NV 194/2022 */
.zk-form input,.zk-form select,.zk select,.zk input{font-size:15px;font-family:inherit}
.zk-krok{border-top:1px solid var(--line,#e3e8f0);padding-top:12px;margin-top:12px}
.zk-krok h3{font-size:16px;margin:0 0 8px}.zk-krok.done h3{color:var(--pass,#12a06b)}
.zk-soubory{margin:0 0 8px;padding-left:18px;overflow-wrap:anywhere}
.opt.sel{outline:2px solid var(--blue);background:var(--tint)}

/* platba kartou / převodem a QR platba */
.platby{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.platby .btn{display:flex;flex-direction:column;align-items:flex-start;text-align:left;gap:2px;height:auto;padding:12px 16px}
.platby .btn small{font-weight:500;font-size:12.5px;opacity:.85}
.prevod{display:grid;grid-template-columns:200px minmax(0,1fr);gap:16px;align-items:start;margin-top:14px;border:2px solid var(--blue);border-radius:16px;padding:14px;background:var(--tint)}
.pv-qr{background:#fff;border-radius:12px;padding:8px;text-align:center}.pv-qr svg{width:100%;height:auto;display:block}.pv-qr p{margin:4px 0 0;font-size:12px}
.pv-ud h3{margin:0 0 8px;font-size:16px}.pv-ud td{overflow-wrap:anywhere}
.kop{border:0;background:none;cursor:pointer;font-size:15px;padding:0 4px;color:var(--blue)}
@media (max-width:560px){.prevod{grid-template-columns:minmax(0,1fr)}.pv-qr{max-width:220px;margin:0 auto}}
/* knihovna, čtečka, slevový kód, firemní licence */
.fi{font:15px var(--f-body,inherit);padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--fg);min-width:0}
.slkod{margin:0 0 14px}.slkod summary{cursor:pointer;color:var(--ink);font-weight:600;font-size:14px;margin-bottom:8px}.slkod .row{align-items:center}.slkod p{margin:8px 0 0}
[data-zdarma]{margin-bottom:8px}
.knihy{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.kniha{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:start}
.kniha img,.kniha-ob{width:96px;aspect-ratio:3/4;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.kniha-ob{display:flex;align-items:center;justify-content:center;text-align:center;padding:8px;font:700 12px/1.25 var(--f-body,inherit);background:var(--grad);color:#1b1500}
.kniha h3{font-size:16px}
@media (max-width:420px){.knihy{grid-template-columns:1fr}.kniha{grid-template-columns:72px 1fr}.kniha img,.kniha-ob{width:72px}}
.ct-bar{position:sticky;top:calc(65px + env(safe-area-inset-top,0px));z-index:5;display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:8px 0;background:var(--bg)}
.ct-bar .btn{padding:8px 14px}.ct-bar a.btn{margin-left:auto}
.ctecka{display:flex;flex-direction:column;align-items:safe center;gap:12px;overflow-x:auto;padding-bottom:30px}
.ct-str{max-width:none;background:#fff;box-shadow:0 4px 18px rgba(20,30,60,.12);border-radius:4px;flex:none}
.ct-str canvas{width:100%;height:100%;display:block;border-radius:4px}
table.tb{border-collapse:collapse;font-size:14px;min-width:100%}.tb th,.tb td{border-bottom:1px solid var(--line);padding:7px 10px 7px 0;text-align:left;vertical-align:middle}.tb th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.tb .btn{padding:6px 12px;font-size:13px}

/* oznámení zákazníkům */
.ozn{position:relative;padding-right:40px;border-left:5px solid #2563eb}.ozn-vypadek{border-left-color:#dc2626}.ozn-akce{border-left-color:#f2b705}.ozn-x{position:absolute;right:10px;top:8px;border:0;background:none;font-size:22px;cursor:pointer;color:inherit;opacity:.6}
.pred{color:var(--muted);font-weight:400;margin-right:6px;font-size:.8em}.akc{color:#b45309}.order-price .pred{display:block;font-size:16px}.akce-pozn{margin:0;color:#b45309;font-weight:600;font-size:14px}