/* ============================================================
   CIRCUITA s.r.o. — demo web (webpj.cz)
   Motiv: plošný spoj — trasy, pájecí body, chip štítky
   ============================================================ */
:root{
  --navy:#101828;
  --navy2:#182338;
  --navy3:#1f2c46;
  --cyan:#06b6d4;
  --cyan-dark:#0891b2;
  --cyan-ink:#062a33;
  --violet:#7c5cfc;
  --ink:#1c2536;
  --mut:#5a6a83;
  --line:#e3e9f2;
  --soft:#f4f7fb;
  --r:14px;
  --shadow:0 8px 28px rgba(16,24,40,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{
  margin:0;
  font-family:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  font-size:16.5px;line-height:1.65;color:var(--ink);background:#fff;
}
h1,h2,h3,h4{font-family:'Sora',sans-serif;font-weight:700;line-height:1.22;color:var(--navy);margin:0 0 14px}
h1{font-size:clamp(30px,4.6vw,50px);letter-spacing:-.01em}
h2{font-size:clamp(25px,3.2vw,36px);letter-spacing:-.01em}
h3{font-size:20px;font-weight:600}
p{margin:0 0 16px}
img{max-width:100%;display:block}
a{color:var(--cyan-dark)}
ul{margin:0;padding:0}
.wrap{max-width:1150px;margin:0 auto;padding:0 22px}
section{padding:80px 0}
section.hero{padding:0}
.lead{font-size:18px;color:var(--mut);max-width:640px}

/* ---------- demo ribbon ---------- */
.demo{
  background:#101828;color:#fff;font-size:13.5px;font-weight:500;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;
  gap:6px 14px;padding:8px 16px;text-align:center;line-height:1.4;
}
.demo a{
  background:var(--cyan);color:#062a33;font-weight:700;text-decoration:none;
  padding:5px 14px;border-radius:8px;white-space:nowrap;font-size:13px;
}
.demo a:hover{background:#22c8e6}

/* ---------- hlavička (sticky) ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);
  border-bottom:1px solid var(--line);
}
.head-in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.logo{
  display:flex;align-items:center;gap:10px;text-decoration:none;
  font-family:'Sora',sans-serif;font-weight:700;font-size:20px;
  letter-spacing:.08em;color:var(--navy);
}
.logo svg{flex:0 0 auto}
.logo small{
  display:block;font-family:'IBM Plex Sans',sans-serif;font-weight:500;
  font-size:10.5px;letter-spacing:.14em;color:var(--mut);text-transform:uppercase;
}
nav.main{display:flex;gap:28px;align-items:center}
nav.main a{
  position:relative;text-decoration:none;color:var(--mut);
  font-weight:500;font-size:15.5px;padding:6px 0;
}
nav.main a:hover{color:var(--navy)}
nav.main a.active{color:var(--navy)}
nav.main a.active::after{
  content:'';position:absolute;left:0;right:0;bottom:-4px;height:3px;
  border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--violet));
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:var(--cyan);color:var(--cyan-ink);text-decoration:none;
  font-family:'Sora',sans-serif;font-weight:700;font-size:15px;
  padding:13px 26px;border-radius:10px;border:0;cursor:pointer;
  transition:background .15s,transform .15s;
}
.btn:hover{background:#22c8e6;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn.ghost:hover{background:rgba(255,255,255,.08)}
.btn.violet{background:var(--violet);color:#fff}
.btn.violet:hover{background:#8d70ff}
.head-btn{padding:11px 20px;font-size:14px}
.burger{
  display:none;align-items:center;gap:8px;background:var(--navy);color:#fff;
  border:0;border-radius:9px;padding:9px 15px;font-family:'Sora',sans-serif;
  font-weight:600;font-size:14px;cursor:pointer;
}
.burger span{font-size:17px;line-height:1}

/* mobilní menu — dropdown karta zpod hlavičky */
.m-menu{
  position:absolute;left:14px;right:14px;top:calc(100% + 8px);
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 18px 50px rgba(16,24,40,.18);padding:10px;
  transform:scale(.95) translateY(-10px);transform-origin:top center;
  opacity:0;pointer-events:none;visibility:hidden;
  transition:transform .2s ease,opacity .2s ease,visibility .2s;
}
.m-menu.open{transform:scale(1) translateY(0);opacity:1;pointer-events:auto;visibility:visible}
.m-menu a{
  display:block;text-decoration:none;color:var(--navy);font-weight:500;
  font-size:16px;padding:13px 16px;border-radius:9px;
}
.m-menu a:hover{background:var(--soft)}
.m-menu a.active{background:var(--soft);color:var(--cyan-dark);font-weight:600}
.m-menu a.m-cta{
  background:var(--cyan);color:var(--cyan-ink);font-family:'Sora',sans-serif;
  font-weight:700;text-align:center;margin-top:6px;
}

/* ---------- chip štítek (obdélník se zoubky) ---------- */
.chip{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  font-family:'Sora',sans-serif;font-weight:600;font-size:12.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--cyan-dark);
  border:1.5px solid var(--cyan);border-radius:4px;padding:6px 16px;
  background:rgba(6,182,212,.06);margin:0 6px 18px;
}
.chip::before,.chip::after{
  content:'';position:absolute;left:10px;right:10px;height:5px;
  background:repeating-linear-gradient(90deg,var(--cyan) 0 2px,transparent 2px 9px);
  opacity:.85;
}
.chip::before{top:-6.5px}
.chip::after{bottom:-6.5px}
.chip.on-dark{color:#67e8f9;border-color:rgba(103,232,249,.7);background:rgba(6,182,212,.12)}
.chip.violet{color:var(--violet);border-color:var(--violet);background:rgba(124,92,252,.06)}
.chip.violet::before,.chip.violet::after{
  background:repeating-linear-gradient(90deg,var(--violet) 0 2px,transparent 2px 9px);
}

/* ---------- hero ---------- */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.hero .traces{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.08fr .92fr;
  gap:52px;align-items:center;padding:84px 0 56px;
}
.hero h1{color:#fff;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero p{color:#aab6cc;font-size:18px;max-width:540px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-photo{
  position:relative;background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:11px;
}
.hero-photo img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:9px}
.hero-photo::before{
  content:'';position:absolute;top:-7px;left:26px;right:26px;height:6px;
  background:repeating-linear-gradient(90deg,var(--cyan) 0 2px,transparent 2px 11px);
  opacity:.75;
}
.hero-photo figcaption{
  position:absolute;left:24px;bottom:24px;background:rgba(16,24,40,.85);
  border-left:3px solid var(--cyan);border-radius:8px;color:#dbe4f2;
  font-size:13px;font-weight:500;padding:8px 14px;max-width:82%;
}
.stats{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  border-top:1px solid rgba(255,255,255,.13);padding:30px 0 46px;
}
.stat b{
  display:block;font-family:'Sora',sans-serif;font-weight:700;
  font-size:clamp(26px,3vw,36px);color:var(--cyan);line-height:1.1;
}
.stat i{font-style:normal;font-size:14px;color:#93a1ba;font-weight:500}

/* ---------- trace předěl mezi sekcemi ---------- */
.trace-strip{line-height:0;overflow:hidden}
.trace-strip svg{width:100%;height:56px;display:block}

/* ---------- karty ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--cyan);
  border-radius:var(--r);padding:26px 26px 22px;box-shadow:var(--shadow);
}
.card h3{margin-bottom:8px}
.card p{color:var(--mut);font-size:15.5px;margin-bottom:0}
.card .ic{
  width:46px;height:46px;border-radius:11px;background:rgba(6,182,212,.1);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card.v{border-left-color:var(--violet)}
.card.v .ic{background:rgba(124,92,252,.1)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}

/* parametry ve službách */
.params{list-style:none;margin-top:16px;display:grid;gap:8px}
.params li{
  position:relative;padding-left:20px;font-size:15px;color:var(--ink);
}
.params li::before{
  content:'';position:absolute;left:0;top:8px;width:8px;height:8px;
  border-radius:2px;background:var(--cyan);
}
.card.v .params li::before{background:var(--violet)}

/* ---------- řetěz (vývoj → prototyp → série) ---------- */
.chain{list-style:none;position:relative;margin-top:38px}
.chain>li{position:relative;padding:0 0 30px 62px}
.chain>li::before{
  content:'';position:absolute;left:19px;top:26px;bottom:-4px;width:2px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
}
.chain>li:last-child{padding-bottom:0}
.chain>li:last-child::before{display:none}
.chain>li::after{
  content:'';position:absolute;left:11px;top:8px;width:14px;height:14px;
  border-radius:50%;border:3.5px solid var(--cyan);background:#fff;
  box-shadow:0 0 0 5px rgba(6,182,212,.14);
}
.chain>li:last-child::after{border-color:var(--violet);box-shadow:0 0 0 5px rgba(124,92,252,.14)}
.chain .step-tag{
  font-family:'Sora',sans-serif;font-weight:600;font-size:12px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--cyan-dark);
}
.chain>li:last-child .step-tag{color:var(--violet)}
.chain h3{margin:4px 0 6px}
.chain p{color:var(--mut);font-size:15.5px;max-width:560px;margin-bottom:8px}
.chain .more{font-weight:600;font-size:15px;text-decoration:none}
.chain .more:hover{text-decoration:underline}

/* ---------- sekce hlavy ---------- */
.s-head{max-width:680px;margin-bottom:44px}
.s-head.center{margin-left:auto;margin-right:auto;text-align:center}
.soft{background:var(--soft)}

/* ---------- pagehead podstránek ---------- */
.pagehead{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding:66px 0 58px}
.pagehead .traces{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.pagehead .wrap{position:relative}
.pagehead h1{color:#fff;font-size:clamp(28px,4vw,44px);margin-bottom:14px}
.pagehead p{color:#aab6cc;font-size:18px;max-width:640px;margin-bottom:0}

/* ---------- foto blok ---------- */
.photo-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:54px;align-items:center}
.photo-frame{position:relative;border:1px solid var(--line);border-radius:16px;padding:11px;background:#fff;box-shadow:var(--shadow)}
.photo-frame img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:9px}
.photo-frame::after{
  content:'';position:absolute;bottom:-7px;left:26px;right:26px;height:6px;
  background:repeating-linear-gradient(90deg,var(--violet) 0 2px,transparent 2px 11px);
  opacity:.65;
}
.checks{list-style:none;display:grid;gap:12px;margin-top:20px}
.checks li{position:relative;padding-left:32px;font-size:16px}
.checks li::before{
  content:'✓';position:absolute;left:0;top:0;width:22px;height:22px;
  border-radius:6px;background:rgba(6,182,212,.12);color:var(--cyan-dark);
  font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;
}

/* ---------- CTA pás ---------- */
.cta-band{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.cta-band .traces{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.cta-in{position:relative;text-align:center;max-width:660px;margin:0 auto}
.cta-band h2{color:#fff}
.cta-band p{color:#aab6cc;font-size:17.5px}
.cta-band .hero-cta{justify-content:center}

/* ---------- konfigurátor poptávky ---------- */
.cfg-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:34px;align-items:start}
.cfg-step{margin-bottom:34px}
.cfg-step h3{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.cfg-step h3 .n{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  background:var(--navy);color:var(--cyan);font-family:'Sora',sans-serif;
  font-size:14px;display:flex;align-items:center;justify-content:center;
}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.tile{
  position:relative;background:#fff;border:1.5px solid var(--line);border-radius:12px;
  padding:18px 12px 15px;cursor:pointer;text-align:center;
  font-family:'IBM Plex Sans',sans-serif;transition:border-color .15s,box-shadow .15s;
}
.tile svg{margin:0 auto 10px;display:block}
.tile b{display:block;font-family:'Sora',sans-serif;font-weight:600;font-size:14.5px;color:var(--navy)}
.tile i{font-style:normal;font-size:12.5px;color:var(--mut)}
.tile:hover{border-color:var(--cyan)}
.tile.sel{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(6,182,212,.18)}
.tile.sel::after{
  content:'✓';position:absolute;top:8px;right:8px;width:20px;height:20px;border-radius:50%;
  background:var(--cyan);color:var(--cyan-ink);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
label.f-label{display:block;font-weight:600;font-size:14.5px;margin-bottom:7px;color:var(--navy)}
select,input[type=text],input[type=email],textarea{
  width:100%;min-width:0;font-family:'IBM Plex Sans',sans-serif;font-size:16px;
  color:var(--ink);background:#fff;border:1.5px solid var(--line);border-radius:10px;
  padding:12px 14px;outline:none;transition:border-color .15s;
}
select:focus,input:focus,textarea:focus{border-color:var(--cyan)}
textarea{resize:vertical;min-height:96px}
.check-row{
  display:flex;align-items:flex-start;gap:12px;background:var(--soft);
  border:1.5px solid var(--line);border-radius:12px;padding:15px 16px;cursor:pointer;
}
.check-row input{width:20px;height:20px;min-width:20px;margin:2px 0 0;accent-color:var(--cyan)}
.check-row b{font-size:15.5px}
.check-row i{display:block;font-style:normal;font-size:13.5px;color:var(--mut)}
.f-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.f-err{
  display:none;background:#fdf1f1;border-left:3px solid #d64545;color:#8f2f2f;
  border-radius:8px;padding:11px 15px;font-size:14.5px;margin-bottom:16px;
}
.f-err.show{display:block}

/* souhrn */
.summary{
  position:sticky;top:96px;background:var(--navy);color:#fff;border-radius:16px;
  padding:26px;box-shadow:0 14px 40px rgba(16,24,40,.25);
}
.summary h3{color:#fff;display:flex;align-items:center;gap:10px}
.summary dl{margin:18px 0 6px;display:grid;gap:0}
.summary .s-row{
  display:flex;justify-content:space-between;gap:14px;padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,.16);
}
.summary dt{color:#93a1ba;font-size:14px;margin:0}
.summary dd{margin:0;font-weight:600;font-size:14.5px;text-align:right;color:#e6edf8}
.summary dd.hl{color:var(--cyan)}
.summary .note{font-size:13px;color:#93a1ba;margin:14px 0 0}
.cfg-done{
  display:none;grid-column:1/-1;background:#fff;border:1.5px solid var(--line);border-top:4px solid var(--cyan);
  border-radius:16px;padding:38px 32px;text-align:center;box-shadow:var(--shadow);
}
.cfg-done.show{display:block}
.cfg-done .num{
  display:inline-block;font-family:'Sora',sans-serif;font-weight:700;font-size:24px;
  color:var(--navy);background:var(--soft);border:1.5px dashed var(--cyan);
  border-radius:10px;padding:10px 24px;letter-spacing:.06em;margin:10px 0 16px;
}

/* ---------- kontakt ---------- */
.k-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.k-card{background:#fff;border:1px solid var(--line);border-left:3px solid var(--cyan);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.k-card h3{font-size:17px;margin-bottom:10px}
.k-card p{color:var(--mut);font-size:15.5px;margin-bottom:6px}
.k-card a{font-weight:600}
.k-card .big{font-family:'Sora',sans-serif;font-weight:700;font-size:19px;color:var(--navy)}
.map-frame{border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);line-height:0}
.map-frame iframe{display:block;width:100%}

/* ---------- patička ---------- */
footer.site-foot{background:var(--navy);color:#93a1ba;padding:64px 0 0;position:relative;overflow:hidden}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:44px;position:relative}
.site-foot .logo{color:#fff;margin-bottom:14px}
.site-foot h4{color:#fff;font-size:15px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px}
.site-foot p{font-size:14.5px}
.foot-nav{list-style:none;display:grid;gap:10px}
.foot-nav a{color:#aab6cc;text-decoration:none;font-size:15px}
.foot-nav a:hover{color:var(--cyan)}
.foot-kontakt{list-style:none;display:grid;gap:9px;font-size:15px}
.foot-kontakt a{color:#e6edf8;text-decoration:none;font-weight:600}
.foot-kontakt a:hover{color:var(--cyan)}
.foot-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.foot-chips span{
  border:1px solid rgba(103,232,249,.4);color:#67e8f9;border-radius:4px;
  font-size:12px;font-weight:600;letter-spacing:.08em;padding:4px 10px;
}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:52px;padding:20px 0;
  font-size:13px;color:#7484a0;position:relative;
}
.foot-bottom .wrap{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
.foot-bottom a{color:#aab6cc}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px;padding-top:64px}
  .photo-split{grid-template-columns:1fr;gap:36px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .cfg-layout{grid-template-columns:1fr}
  .summary{position:static}
  .k-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  nav.main{display:none}
  .head-btn{display:none}
  .burger{display:inline-flex}
  .head-in{min-height:64px}
}
@media (max-width:760px){
  section{padding:58px 0}
  .stats{grid-template-columns:repeat(2,1fr);gap:22px 14px}
  .grid-2{grid-template-columns:1fr}
  .tiles{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr;gap:34px}
  .k-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr}
  .hero p,.pagehead p{font-size:16.5px}
  .lead{font-size:16.5px}
}
@media (max-width:520px){
  .grid-3{grid-template-columns:1fr}
  .chain>li{padding-left:50px}
  .chain>li::before{left:15px}
  .chain>li::after{left:7px}
  .hero-photo figcaption{position:static;margin-top:10px;max-width:none}
  .cfg-done{padding:30px 18px}
}