/* Varianta 3 – Prémiový technický design
   Antracit, bílá, měď · Space Grotesk + IBM Plex Sans */

:root {
  --antracit: #16181b;
  --antracit-2: #1e2125;
  --antracit-3: #2a2e33;
  --sediva: #8b9097;
  --svetla: #f1efec;
  --bila: #ffffff;
  --med: #c8743a;
  --med-svetla: #e09a63;
  --med-tmava: #a65a26;
  --linka-tmava: rgba(255, 255, 255, .1);
  --linka-svetla: #dedad4;

  --nadpis: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --text: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius: 2px;
  --sirka: 1320px;

  --lb-bg: rgba(16, 17, 19, .97);
  --lb-accent: var(--med);
  --stav-info: #3b4a5c;
  --stav-ok: #2e7d4f;
  --stav-chyba: #b3261e;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--text);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: #d9dadc;
  background: var(--antracit);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--med); outline-offset: 3px; }

h1, h2, h3 { font-family: var(--nadpis); font-weight: 700; line-height: 1; letter-spacing: -.035em; margin: 0 0 .5em; color: var(--bila); }
h2 { font-size: clamp(2.6rem, 6vw, 5rem); }
h3 { font-size: 1.5rem; letter-spacing: -.02em; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: var(--sirka); margin: 0 auto; padding: 0 clamp(1.25rem, 3vw, 2.5rem); }

.ikona {
  width: 1.2em; height: 1.2em; flex: none;
  fill: none; stroke: currentColor;
  stroke-width: 1.7; stroke-linecap: square; stroke-linejoin: miter;
}

.stitek-tech {
  display: flex; align-items: center; gap: .75rem;
  margin-bottom: 1.5rem;
  font-family: var(--nadpis); font-size: .8rem; font-weight: 500;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--med-svetla);
}
.stitek-tech i { display: inline-block; width: 2.5rem; height: 1px; background: currentColor; }

/* ---------- Tlačítka ---------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  min-height: 3rem;
  padding: .75rem 1.4rem;
  border: 1px solid transparent; border-radius: var(--radius);
  font-family: var(--nadpis); font-weight: 600; font-size: 1rem; letter-spacing: .01em;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  transition: color .3s, border-color .3s, background-color .3s;
}
.btn--velke { min-height: 3.5rem; padding: .9rem 1.75rem; font-size: 1.05rem; }
.btn--plne { width: 100%; }
.btn--med { background: var(--med); color: #fff; }
.btn--med::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--med-tmava); transform: translateY(101%); transition: transform .35s cubic-bezier(.2, .7, .2, 1);
}
.btn--med { isolation: isolate; }
.btn--med:hover::before { transform: none; }
.btn--linka { border-color: rgba(255, 255, 255, .3); color: #fff; }
.btn--linka:hover { border-color: var(--med); color: var(--med-svetla); }
.btn--tmave { background: var(--antracit); color: #fff; }
.btn--tmave:hover { background: var(--med-tmava); }
.btn .ikona { transition: transform .3s; }
.btn:hover .ikona { transform: translateX(3px); }

/* ---------- Průběh čtení ---------- */
.prubeh { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 100; pointer-events: none; }
.prubeh span { display: block; height: 100%; background: var(--med); transform-origin: left; transform: scaleX(0); }

/* ---------- Hlavička ---------- */
.hlavicka {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  transition: background-color .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.hlavicka.is-scrolled { background: rgba(22, 24, 27, .92); border-color: var(--linka-tmava); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.hlavicka__in { display: flex; align-items: center; justify-content: space-between; min-height: 4.75rem; gap: 1rem; }
.logo {
  display: inline-flex; align-items: center; gap: .75rem;
  font-family: var(--nadpis); font-weight: 700; font-size: 1.05rem; letter-spacing: .08em; text-transform: uppercase;
  text-decoration: none; color: #fff;
}
.logo b { color: var(--med); font-weight: 500; }
.logo__znak {
  width: 1.75rem; height: 1.75rem;
  border: 2px solid var(--med);
  background: linear-gradient(var(--med), var(--med)) center / 100% 2px no-repeat;
  border-left-color: transparent; border-right-color: transparent;
  position: relative;
}
.logo__znak::before, .logo__znak::after {
  content: ""; position: absolute; top: -2px; bottom: -2px; width: 2px; background: #fff;
}
.logo__znak::before { left: 3px; }
.logo__znak::after { right: 3px; }

.menu { display: flex; align-items: center; gap: 2rem; }
.menu ol { display: flex; gap: 1.75rem; margin: 0; padding: 0; list-style: none; }
.menu ol a {
  display: flex; align-items: baseline; gap: .4rem; padding: .4rem 0;
  font-family: var(--nadpis); font-weight: 500; color: #fff; text-decoration: none;
  transition: color .2s;
}
.menu ol a span { font-size: .7rem; color: var(--med); letter-spacing: .05em; }
.menu ol a:hover { color: var(--med-svetla); }
.menu-toggle {
  display: none;
  width: 3rem; height: 3rem;
  border: 1px solid rgba(255, 255, 255, .25); border-radius: var(--radius);
  background: transparent; color: #fff; cursor: pointer;
}
.menu-toggle .ikona { width: 1.5rem; height: 1.5rem; margin: auto; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: 8.5rem;
  background:
    linear-gradient(var(--linka-tmava) 1px, transparent 1px) 0 0 / 100% 120px,
    linear-gradient(90deg, var(--linka-tmava) 1px, transparent 1px) 0 0 / 120px 100%,
    var(--antracit);
  background-blend-mode: normal;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 20% 30%, transparent 0, var(--antracit) 70%);
  pointer-events: none;
}
.hero__grid { position: relative; display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem; align-items: end; padding-bottom: 5rem; }
.hero__text { grid-column: 1 / 8; padding-bottom: 1rem; }
.hero h1 { font-size: clamp(3.6rem, 10.5vw, 9.5rem); line-height: .88; letter-spacing: -.055em; margin-bottom: 2.25rem; }
.hero__radek { display: block; }
.hero__radek--obrys { color: transparent; -webkit-text-stroke: 2px var(--med); }
.hero__lead { max-width: 36rem; font-size: 1.15rem; color: #b8bbbf; margin-bottom: 2rem; }
.hero__lead strong { color: #fff; font-weight: 600; }
.hero__akce { display: flex; flex-wrap: wrap; gap: .85rem; }
.hero__ref {
  display: inline-flex; align-items: center; gap: .5rem;
  margin-top: 1.5rem;
  font-family: var(--nadpis); font-weight: 500; color: #fff; text-decoration: none;
  border-bottom: 1px solid var(--med); padding-bottom: .2rem;
}
.hero__ref:hover { color: var(--med-svetla); }

.hero__foto { position: relative; grid-column: 8 / 13; margin: 0 0 0 1rem; }
.hero__foto::before {
  content: ""; position: absolute; inset: -1.25rem 1.25rem 1.25rem -1.25rem;
  border: 1px solid var(--med); pointer-events: none;
}
.hero__foto img { position: relative; width: 100%; aspect-ratio: 3 / 4.4; object-fit: cover; object-position: center 35%; filter: saturate(.9) contrast(1.05); }
.hero__foto figcaption {
  position: absolute; right: 0; bottom: 0;
  padding: .55rem .9rem;
  background: var(--antracit); color: #c9cbce;
  font-size: .85rem;
}
.hero__foto figcaption span { color: var(--med-svetla); font-family: var(--nadpis); text-transform: uppercase; letter-spacing: .14em; font-size: .7rem; margin-right: .4rem; }
.hero__cislo {
  position: absolute; left: -3.5rem; bottom: 3.5rem;
  display: flex; align-items: center; gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--med); color: #fff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
}
.hero__cislo strong { font-family: var(--nadpis); font-size: 3.25rem; line-height: 1; letter-spacing: -.04em; }
.hero__cislo > span { font-size: .9rem; line-height: 1.3; font-weight: 500; }

.pas { position: relative; border-top: 1px solid var(--linka-tmava); border-bottom: 1px solid var(--linka-tmava); overflow: hidden; background: var(--antracit-2); }
.pas__in { display: flex; width: max-content; animation: pas 40s linear infinite; }
.pas span {
  display: flex; align-items: center; gap: 2.5rem; padding: 1.15rem 1.25rem;
  font-family: var(--nadpis); font-size: 1.05rem; font-weight: 500; text-transform: uppercase; letter-spacing: .14em; color: #9aa0a6;
  white-space: nowrap;
}
.pas span::after { content: ""; width: .5rem; height: .5rem; background: var(--med); transform: rotate(45deg); }
@keyframes pas { to { transform: translateX(-50%); } }

/* ---------- Služby ---------- */
.sluzby { background: var(--svetla); color: #3a3d42; padding: clamp(5rem, 9vw, 8rem) 0; }
.sluzby__grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem; align-items: start; }
.sluzby__hlava { grid-column: 1 / 6; position: sticky; top: 7rem; padding-right: 2rem; }
.sluzby__hlava .stitek-tech { color: var(--med-tmava); }
.sluzby h2 { color: var(--antracit); }
.sluzby__hlava > p:not(.stitek-tech) { font-size: 1.15rem; max-width: 26rem; margin-bottom: 2rem; }
.sluzby__karty { grid-column: 6 / 13; display: grid; gap: 1.25rem; }

.karta {
  --mx: 50%; --my: 50%;
  position: relative;
  display: grid; grid-template-columns: 15rem 1fr; gap: 2rem;
  padding: 2.25rem 2.25rem 2.25rem 2rem;
  background: var(--antracit); color: #c7c9cc;
  border: 1px solid var(--antracit);
  overflow: hidden;
  transition: border-color .3s, transform .3s;
}
.karta::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px circle at var(--mx) var(--my), rgba(200, 116, 58, .22), transparent 60%);
  opacity: 0; transition: opacity .3s; pointer-events: none;
}
.karta:hover { border-color: var(--med); }
.karta:hover::before { opacity: 1; }
.karta__hlava { position: relative; }
.karta__cislo { display: block; font-family: var(--nadpis); font-size: .85rem; color: var(--med); letter-spacing: .1em; margin-bottom: 1.5rem; }
.karta__ikona {
  display: grid; place-items: center;
  width: 3.75rem; height: 3.75rem; margin-bottom: 1rem;
  border: 1px solid rgba(255, 255, 255, .18);
  color: var(--med-svetla);
}
.karta__ikona .ikona { width: 1.9rem; height: 1.9rem; stroke-linecap: round; stroke-linejoin: round; }
.karta h3 { font-size: 2.25rem; margin: 0; }
.karta ul { position: relative; margin: 0; padding: 0; list-style: none; align-self: center; }
.karta li { display: flex; gap: .85rem; padding: .7rem 0; border-top: 1px solid var(--linka-tmava); }
.karta li:first-child { border-top: 0; }
.karta li::before { content: ""; flex: none; width: .45rem; height: .45rem; margin-top: .6rem; background: var(--med); }

/* ---------- Reference ---------- */
.reference { padding: clamp(5rem, 9vw, 8rem) 0; }
.reference__hlava { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: end; margin-bottom: 3rem; }
.reference h2 { margin: 0; font-size: clamp(3rem, 8vw, 7rem); }
.reference__ovladani p { color: #a5a9ae; max-width: 28rem; }
.filtry { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--linka-tmava); width: max-content; max-width: 100%; }
.filtry button {
  min-height: 2.9rem; padding: .5rem 1.25rem;
  border: 0; border-right: 1px solid var(--linka-tmava);
  background: transparent; color: #c8cacd;
  font-family: var(--nadpis); font-weight: 500; font-size: .95rem;
  cursor: pointer; transition: background-color .2s, color .2s;
}
.filtry button:last-child { border-right: 0; }
.filtry button:hover { color: #fff; background: var(--antracit-3); }
.filtry button[aria-pressed="true"] { background: var(--med); color: #fff; }

.mozaika {
  display: grid; grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 270px; grid-auto-flow: dense;
  gap: 1rem; margin: 0; padding: 0; list-style: none;
}
.dlazdice { grid-column: span 4; }
.dlazdice--3 { grid-column: span 3; }
.dlazdice--5 { grid-column: span 5; }
.dlazdice--7 { grid-column: span 7; }
.dlazdice--vysoka { grid-row: span 2; }
.dlazdice > a { position: relative; display: block; height: 100%; overflow: hidden; color: #fff; text-decoration: none; background: var(--antracit-3); }
.dlazdice img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2, .7, .2, 1), filter .5s; filter: saturate(.85); }
.dlazdice > a:hover img { transform: scale(1.06); filter: saturate(1); }
.dlazdice__info {
  position: absolute; inset: auto 0 0 0;
  display: flex; flex-direction: column; gap: .2rem;
  padding: 3.5rem 1.25rem 1.15rem;
  background: linear-gradient(transparent, rgba(16, 17, 19, .92) 60%);
}
.dlazdice__meta { font-family: var(--nadpis); font-size: .75rem; text-transform: uppercase; letter-spacing: .16em; color: var(--med-svetla); }
.dlazdice__nazev { font-family: var(--nadpis); font-weight: 700; font-size: 1.3rem; line-height: 1.15; letter-spacing: -.02em; }
.dlazdice__popis {
  font-size: .92rem; color: #c0c3c7;
  max-height: 0; opacity: 0; overflow: hidden;
  transition: max-height .4s, opacity .4s, margin .4s;
}
.dlazdice > a:hover .dlazdice__popis, .dlazdice > a:focus-visible .dlazdice__popis { max-height: 4rem; opacity: 1; margin-top: .25rem; }
.dlazdice__plus {
  position: absolute; top: 1rem; right: 1rem;
  display: grid; place-items: center;
  width: 2.6rem; height: 2.6rem;
  background: rgba(22, 24, 27, .7); border: 1px solid rgba(255, 255, 255, .2);
  transition: background-color .3s, transform .3s;
}
.dlazdice > a:hover .dlazdice__plus { background: var(--med); transform: rotate(90deg); }

.dlazdice--vyzva > a {
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 1.75rem;
  background: var(--med);
  transition: background-color .3s;
}
.dlazdice--vyzva > a:hover { background: var(--med-tmava); }
.dlazdice--vyzva .dlazdice__meta { color: #fde3cf; }
.dlazdice--vyzva .dlazdice__nazev { font-size: clamp(1.4rem, 2.2vw, 1.9rem); }
.dlazdice__odkaz { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--nadpis); font-weight: 600; }

.dalsi { margin-top: 4.5rem; display: grid; grid-template-columns: 4fr 8fr; gap: 2rem; align-items: start; }
.dalsi h3 { font-size: 1.5rem; }
.dalsi__hlava p { color: #a5a9ae; font-size: .98rem; }
.dalsi__rada { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; margin: 0; padding: 0; list-style: none; }
.dalsi__rada a { position: relative; display: block; aspect-ratio: 1; overflow: hidden; color: #fff; text-decoration: none; }
.dalsi__rada img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.4); transition: filter .4s, transform .6s; }
.dalsi__rada a:hover img { filter: none; transform: scale(1.06); }
.dalsi__rada span {
  position: absolute; inset: auto 0 0 0; padding: 1.75rem .7rem .6rem;
  background: linear-gradient(transparent, rgba(16, 17, 19, .9));
  font-family: var(--nadpis); font-size: .82rem; font-weight: 500; line-height: 1.25;
}

/* ---------- Kontakt ---------- */
.kontakt { background: var(--bila); color: #3a3d42; padding: clamp(5rem, 9vw, 8rem) 0; }
.kontakt__grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem; }
.kontakt__info { grid-column: 1 / 6; }
.kontakt__info .stitek-tech { color: var(--med-tmava); }
.kontakt h2 { color: var(--antracit); }
.kontakt__velky {
  display: inline-block; margin: 1rem 0 2rem;
  font-family: var(--nadpis); font-weight: 700; font-size: clamp(1.9rem, 3.6vw, 3rem); letter-spacing: -.03em;
  color: var(--med-tmava); text-decoration: none;
  background: linear-gradient(var(--med), var(--med)) 0 100% / 0 2px no-repeat;
  transition: background-size .4s;
}
.kontakt__velky:hover { background-size: 100% 2px; }
.kontakt__udaje { margin: 0; border-top: 1px solid var(--linka-svetla); }
.kontakt__udaje > div { display: grid; grid-template-columns: 10rem 1fr; gap: 1rem; padding: .95rem 0; border-bottom: 1px solid var(--linka-svetla); }
.kontakt__udaje dt { font-family: var(--nadpis); font-size: .78rem; text-transform: uppercase; letter-spacing: .16em; color: #7a7f86; padding-top: .2rem; }
.kontakt__udaje dd { margin: 0; color: var(--antracit); font-weight: 500; }
.kontakt__udaje a { color: var(--antracit); text-decoration-color: var(--med); text-underline-offset: 4px; }
.kontakt__udaje a:hover { color: var(--med-tmava); }
.kontakt__udaje address { font-style: normal; }
.kontakt__mapa { display: inline-flex; align-items: center; gap: .3rem; margin-top: .2rem; font-size: .95rem; }

.kontakt__form { grid-column: 7 / 13; padding: 2.5rem; background: var(--svetla); border-top: 3px solid var(--med); }
.kontakt__form h3 { color: var(--antracit); font-size: 1.85rem; margin-bottom: 1.5rem; }
.formular__radek { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.25rem; }
.pole { position: relative; margin-bottom: 1.35rem; }
.pole label { display: block; margin-bottom: .2rem; font-family: var(--nadpis); font-size: .8rem; font-weight: 500; text-transform: uppercase; letter-spacing: .12em; color: #5d6168; }
.povinne { color: var(--med); }
.nepovinne { text-transform: none; letter-spacing: 0; color: #8b9097; }
.pole input:not([type="checkbox"]), .pole select, .pole textarea {
  width: 100%; min-height: 3rem;
  padding: .6rem 0;
  border: 0; border-bottom: 1.5px solid #b9b5ae; border-radius: 0;
  background: transparent;
  font: inherit; font-size: 1.05rem; color: var(--antracit);
  transition: border-color .25s, box-shadow .25s;
}
.pole select { padding-right: 1.5rem; }
.pole textarea { resize: vertical; min-height: 5.5rem; }
.pole input:focus, .pole select:focus, .pole textarea:focus { outline: none; border-color: var(--med); box-shadow: 0 1.5px 0 var(--med); }
.pole [aria-invalid="true"] { border-color: var(--stav-chyba) !important; }
.pole--souhlas { display: grid; grid-template-columns: auto 1fr; gap: .25rem .75rem; }
.pole--souhlas input { width: 1.3rem; height: 1.3rem; margin: .15rem 0 0; accent-color: var(--med); }
.pole--souhlas label { margin: 0; font-family: var(--text); font-size: .98rem; text-transform: none; letter-spacing: 0; color: #3a3d42; }
.pole--souhlas .chyba { grid-column: 2; }
.gdpr { margin: 0 0 1.75rem; font-size: .92rem; color: #5d6168; }
.gdpr summary { cursor: pointer; font-family: var(--nadpis); font-weight: 500; color: var(--antracit); }
.gdpr p { margin: .6rem 0 0; }
.formular__noscript { margin: 1rem 0 0; font-size: .92rem; color: #5d6168; }
.odesila-se [type="submit"] { opacity: .7; cursor: progress; }

/* ---------- Patička ---------- */
.paticka { padding: 4rem 0 2rem; border-top: 1px solid var(--linka-tmava); }
.paticka__velke {
  display: flex; flex-wrap: wrap; align-items: center; gap: .3em .5em;
  font-family: var(--nadpis); font-weight: 700; font-size: clamp(2.2rem, 8vw, 6.5rem); letter-spacing: -.05em; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px #565c64;
  margin-bottom: 2.5rem;
}
.paticka__velke i { width: .2em; height: .2em; background: var(--med); transform: rotate(45deg); }
.paticka__radek { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; font-size: .92rem; color: #8b9097; }
.paticka__radek p { margin: 0; }
.paticka a { color: #d9dadc; text-decoration: none; }
.paticka a:hover { color: var(--med-svetla); }

.plovouci-tel { display: none; }

/* ---------- Odhalování ---------- */
@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2, .7, .2, 1), transform .9s cubic-bezier(.2, .7, .2, 1); }
  .js [data-reveal].is-visible { opacity: 1; transform: none; }
  .js .sluzby__karty [data-reveal]:nth-child(2) { transition-delay: .1s; }
  .js .sluzby__karty [data-reveal]:nth-child(3) { transition-delay: .2s; }
  .js .hero__radek { animation: radek .9s cubic-bezier(.2, .7, .2, 1) both; }
  .js .hero__radek:nth-child(2) { animation-delay: .1s; }
  .js .hero__radek:nth-child(3) { animation-delay: .2s; }
  @keyframes radek { from { opacity: 0; transform: translateY(.3em); } }
}
@media (prefers-reduced-motion: reduce) {
  .pas__in { animation: none; }
}

/* ---------- Responzivita ---------- */
@media (max-width: 1100px) {
  .karta { grid-template-columns: 1fr; gap: 1rem; }
  .karta__hlava { display: flex; align-items: center; gap: 1rem; }
  .karta__cislo { margin: 0; }
  .karta__ikona { margin: 0; }
  .karta h3 { font-size: 1.9rem; }
  .dalsi { grid-template-columns: 1fr; }
}

@media (max-width: 960px) {
  .menu-toggle { display: grid; }
  .js .menu {
    position: fixed; inset: 4.75rem 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 1.5rem;
    padding: 1.5rem clamp(1.25rem, 3vw, 2.5rem) 2rem;
    background: var(--antracit);
    border-bottom: 1px solid var(--linka-tmava);
    visibility: hidden; opacity: 0; transform: translateY(-10px);
    transition: opacity .25s, transform .25s, visibility 0s .25s;
  }
  .js .menu.is-open { visibility: visible; opacity: 1; transform: none; transition: opacity .25s, transform .25s; }
  .js .menu ol { flex-direction: column; gap: 0; }
  .js .menu ol a { padding: .9rem 0; font-size: 1.6rem; border-bottom: 1px solid var(--linka-tmava); }
  html.menu-open .hlavicka { background: var(--antracit); }
  html:not(.js) .hlavicka { position: absolute; }
  html:not(.js) .hlavicka__in { flex-wrap: wrap; }
  html:not(.js) .menu-toggle { display: none; }
  html:not(.js) .menu ol { flex-wrap: wrap; gap: 1rem; }

  .hero { padding-top: 7rem; }
  .hero__grid { grid-template-columns: 1fr; gap: 3.5rem; padding-bottom: 3.5rem; }
  .hero__text, .hero__foto { grid-column: 1 / -1; }
  .hero__foto { margin: 0 1.25rem 0 1.25rem; max-width: 34rem; }
  .hero__foto img { aspect-ratio: 4 / 3.6; }
  .hero__cislo { left: -1.25rem; bottom: -1.5rem; }

  .sluzby__grid { grid-template-columns: 1fr; }
  .sluzby__hlava, .sluzby__karty { grid-column: 1 / -1; }
  .sluzby__hlava { position: static; padding: 0; margin-bottom: 1.5rem; }

  .reference__hlava { grid-template-columns: 1fr; }
  .mozaika { grid-template-columns: repeat(6, 1fr); grid-auto-rows: 240px; }
  .dlazdice, .dlazdice--3, .dlazdice--4, .dlazdice--5 { grid-column: span 3; }
  .dlazdice--7 { grid-column: span 6; }

  .kontakt__grid { grid-template-columns: 1fr; gap: 3rem; }
  .kontakt__info, .kontakt__form { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  body { font-size: 1rem; }
  .hlavicka__in { min-height: 4.25rem; }
  .js .menu { top: 4.25rem; }
  .logo { font-size: .95rem; }
  .stitek-tech { flex-wrap: wrap; gap: .3rem .6rem; letter-spacing: .14em; }
  .hero .stitek-tech i { display: none; }
  .hero h1 { font-size: clamp(3.4rem, 19vw, 5rem); }
  .hero__radek--obrys { -webkit-text-stroke-width: 1.5px; }
  .hero__akce .btn { width: 100%; }
  .hero__foto { margin: 0 .75rem; }
  .hero__foto::before { inset: -.75rem .75rem .75rem -.75rem; }
  .hero__foto figcaption { position: static; padding: .6rem 0 0; background: none; }
  .hero__cislo { left: -.75rem; bottom: 2.5rem; padding: .9rem 1.1rem; }
  .hero__cislo strong { font-size: 2.4rem; }
  .karta { padding: 1.75rem 1.25rem; }
  .karta h3 { font-size: 1.6rem; }
  .mozaika { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .dlazdice, .dlazdice--3, .dlazdice--4, .dlazdice--5, .dlazdice--7 { grid-column: 1 / -1; grid-row: auto; }
  .dlazdice > a { aspect-ratio: 4 / 4.2; height: auto; }
  .dlazdice--7 > a { aspect-ratio: 8 / 5; }
  .dlazdice--vyzva > a { aspect-ratio: auto; min-height: 12rem; }
  .dlazdice__popis { max-height: none; opacity: 1; margin-top: .25rem; }
  .dalsi__rada { grid-template-columns: 1fr 1fr; }
  .kontakt__udaje > div { grid-template-columns: 1fr; gap: .15rem; }
  .kontakt__form { padding: 1.75rem 1.15rem; margin: 0 -.25rem; }
  .formular__radek { grid-template-columns: 1fr; }
  .paticka__radek { flex-direction: column; }
  .plovouci-tel {
    position: fixed; right: 1rem; bottom: 1rem; z-index: 50;
    display: grid; place-items: center;
    width: 3.75rem; height: 3.75rem;
    background: var(--med); color: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
  }
  .plovouci-tel .ikona { width: 1.6rem; height: 1.6rem; stroke-linecap: round; stroke-linejoin: round; }
}

@media (hover: none) {
  .dlazdice__popis { max-height: none; opacity: 1; margin-top: .25rem; }
}