/* === FONTS === */
@font-face{font-family:'Archivo';font-style:normal;font-weight:100 900;font-stretch:62.5% 125%;font-display:swap;
  src:url('../fonts/archivo-latin-ext.woff2') format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-weight:100 900;font-stretch:62.5% 125%;font-display:swap;
  src:url('../fonts/archivo-latin.woff2') format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/ibmplex400-latin-ext.woff2') format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/ibmplex400-latin.woff2') format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;
  src:url('../fonts/ibmplex500-latin-ext.woff2') format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;
  src:url('../fonts/ibmplex500-latin.woff2') format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* === DESIGN TOKENS === */
:root {
  /* Paleta */
  --white: #EEEBE5;        /* teplá bílá anhydritu */
  --white-pure: #F5F3EF;   /* čistší bílá pro texty na tmavém */
  --gray-50: #E8E5DF;
  --gray-100: #D4CFC7;
  --gray-200: #B8B3AA;
  --gray-300: #8E8880;
  --gray-500: #5C574F;
  --gray-700: #3A3630;
  --ink: #1B1C1E;          /* grafit */
  --ink-90: rgba(27,28,30,.90);
  --accent: #B8A96A;       /* zlatavá — z loga a ikon klienta */
  --accent-light: rgba(184,169,106,.18);
  --green: #16a15e;        /* zelená z identity klienta */

  /* Typografie */
  --font-sans: 'Archivo', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Spacing */
  --container: 1240px;
  --section-pad: clamp(72px, 9vw, 128px);
  --section-pad-sm: clamp(48px, 6vw, 80px);
}

/* === RESET === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  font-weight:400;
  font-stretch:100%;
  background:var(--white);
  color:var(--ink);
  font-size:18px;
  line-height:1.65;
  font-feature-settings:'kern' 1,'liga' 1,'tnum' 0;
  -webkit-font-smoothing:antialiased;
}
img,video{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{cursor:pointer;font-family:inherit;border:none;background:none}
ul,ol{list-style:none}
summary{cursor:pointer}

/* === TYPOGRAPHY === */
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-sans);
  font-stretch:75%;  /* Archivo condensed pro nadpisy */
  font-weight:700;
  line-height:1.05;
  letter-spacing:-0.025em;
}
.d1{font-size:clamp(44px,6.5vw,104px);line-height:.95;letter-spacing:-0.035em;font-stretch:75%}
.d2{font-size:clamp(36px,4.8vw,76px);letter-spacing:-0.03em;font-stretch:75%}
.d3{font-size:clamp(28px,3.2vw,52px);letter-spacing:-0.025em}
h2{font-size:clamp(28px,3.2vw,52px);letter-spacing:-0.025em}
h3{font-size:clamp(20px,2vw,32px);letter-spacing:-0.02em}
h4{font-size:clamp(17px,1.4vw,22px);letter-spacing:-0.01em}
.lead{font-size:clamp(17px,1.4vw,21px);line-height:1.55;color:var(--gray-500);font-weight:400}
.mono{font-family:var(--font-mono);font-size:.9em;letter-spacing:0;font-stretch:100%}
small,.small{font-size:13px;letter-spacing:.02em}
.label-caps{font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-stretch:100%}

/* === LAYOUT === */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.section{padding:var(--section-pad) 0}
.section-sm{padding:var(--section-pad-sm) 0}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,3vw,48px)}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:clamp(16px,2vw,32px)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,24px)}
.flex{display:flex;align-items:center}
.flex-col{display:flex;flex-direction:column}

/* === BUTTONS === */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:52px;padding:0 28px;
  font-family:var(--font-sans);font-size:15px;font-weight:600;font-stretch:100%;
  letter-spacing:.01em;
  border-radius:4px;
  transition:all .18s ease;
  white-space:nowrap;
  text-decoration:none;
}
.btn-primary{background:var(--ink);color:var(--white-pure)}
.btn-primary:hover{background:var(--gray-700);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{background:#c8ba7a;transform:translateY(-1px)}
.btn-outline{border:1.5px solid currentColor;color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:var(--white-pure)}
.btn-outline-white{border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-outline-white:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-lg{height:60px;padding:0 40px;font-size:16px}
.btn-sm{height:40px;padding:0 18px;font-size:13px}

/* === NIVELAČNÍ LINKA (vizuální podpis) === */
.nivel-line{
  display:flex;align-items:center;gap:16px;
  padding:12px 0;
  border-top:1.5px solid var(--accent);
}
.nivel-line .mono{font-size:11px;color:var(--gray-300);letter-spacing:.08em}
.nivel-line-full{
  width:100%;height:1.5px;
  background:linear-gradient(to right,var(--accent) 0%,rgba(184,169,106,.15) 100%);
  position:relative;
}

/* === NAVBAR === */
#main-nav{
  position:fixed;top:0;left:0;right:0;z-index:900;
  height:72px;
  display:flex;align-items:center;
  transition:background .25s,box-shadow .25s;
}
#main-nav.nav-scrolled{
  background:var(--white);
  box-shadow:0 1px 0 var(--gray-100);
}
#main-nav .container{display:flex;align-items:center;gap:0;width:100%}
.nav-logo{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(17px,1.5vw,22px);
  font-weight:700;font-stretch:75%;
  letter-spacing:-0.02em;
  color:var(--ink);
  flex-shrink:0;
}
.nav-logo img{height:36px;width:auto}
.nav-spacer{flex:1}
.nav-links{
  display:flex;align-items:center;
  gap:clamp(20px,2vw,36px);
}
.nav-links a{
  font-size:14px;font-weight:500;
  color:var(--gray-700);
  transition:color .15s;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--ink)}
.nav-tel{
  display:flex;align-items:center;gap:8px;
  height:44px;padding:0 20px;
  background:var(--ink);color:var(--white-pure)!important;
  border-radius:4px;
  font-size:14px;font-weight:600;
  margin-left:24px;
  transition:background .18s;
}
.nav-tel:hover{background:var(--gray-700)!important}

/* Hamburger */
.nav-burger{display:none;flex-direction:column;gap:5px;padding:8px;margin-left:auto}
.nav-burger span{display:block;width:22px;height:1.5px;background:var(--ink);transition:.2s}
.nav-mobile{display:none;position:fixed;inset:0;background:var(--white);z-index:895;padding:100px 24px 40px;flex-direction:column;gap:8px}
.nav-mobile.open{display:flex}
.nav-mobile a{font-size:clamp(20px,5vw,28px);font-weight:700;font-stretch:75%;padding:12px 0;border-bottom:1px solid var(--gray-100);color:var(--ink)}

/* === HERO === */
.hero{
  position:relative;min-height:100svh;max-height:900px;
  display:flex;align-items:flex-end;
  overflow:hidden;
  background:var(--ink);
  margin-top:0;
  padding-top:72px;
}
.hero-video-wrap{
  position:absolute;inset:0;overflow:hidden;
}
.hero-video-wrap video,
.hero-video-wrap img.hero-poster{
  width:100%;height:100%;object-fit:cover;object-position:center 35%;
  position:absolute;inset:0;
}
.hero-overlay{
  position:absolute;inset:0;
  background:
    linear-gradient(to top,rgba(27,28,30,.88) 0%,rgba(27,28,30,.45) 45%,rgba(27,28,30,.15) 75%,transparent 100%),
    linear-gradient(to right,rgba(27,28,30,.55) 0%,transparent 60%);
}
.hero-content{
  position:relative;z-index:2;
  padding:clamp(48px,6vh,80px) 0 0;
}
.hero-content .container{
  display:flex;flex-direction:column;
  align-items:flex-start;
  gap:24px;
}
.hero-h1{
  color:#fff;
  max-width:min(780px,70vw);
}
.hero-sub{
  font-size:clamp(15px,1.2vw,18px);
  color:rgba(255,255,255,.78);
  max-width:500px;
  line-height:1.5;
}
.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.hero-rating{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.65);
  padding:6px 0;
}
.hero-rating .stars{color:var(--accent);letter-spacing:1px;font-size:16px}
.hero-rating a{color:rgba(255,255,255,.65);transition:color .15s}
.hero-rating a:hover{color:#fff}

/* Nivelační linka v hero */
.hero-nivel{
  position:relative;z-index:2;
  width:100%;
  padding:clamp(20px,3vw,32px) 0 0;
  display:flex;align-items:center;
  gap:0;
}
.hero-nivel-bar{
  height:1.5px;
  background:var(--accent);
  transform-origin:left;
  transform:scaleX(0);
  animation:nivel-grow 1.2s .8s cubic-bezier(.4,0,.2,1) forwards;
}
.hero-nivel-tag{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--accent);
  letter-spacing:.1em;
  white-space:nowrap;
  padding-left:16px;
  opacity:0;
  animation:fade-in .4s 1.8s ease forwards;
}
@keyframes nivel-grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes fade-in{from{opacity:0}to{opacity:1}}

/* === SECTION: STATS === */
.stats-row{
  padding:clamp(40px,5vw,64px) 0;
  background:var(--ink);
  color:#fff;
}
.stats-row .container{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:rgba(255,255,255,.1);
}
.stat-item{
  background:var(--ink);
  padding:clamp(28px,3vw,40px) clamp(24px,3vw,40px);
  display:flex;flex-direction:column;gap:8px;
}
.stat-num{
  font-size:clamp(44px,5vw,72px);
  font-weight:700;
  font-stretch:75%;
  letter-spacing:-0.04em;
  line-height:1;
  color:var(--accent);
}
.stat-unit{font-size:.45em;color:rgba(255,255,255,.5);margin-left:2px}
.stat-desc{font-size:15px;color:rgba(255,255,255,.72);line-height:1.4;max-width:220px}

/* === SECTION: PRODUKTY === */
.products-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:3px;
  margin-top:clamp(40px,5vw,64px);
}
.product-card{
  position:relative;overflow:hidden;
  aspect-ratio:4/3;
  display:flex;align-items:flex-end;
  background:var(--ink);
}
.product-card img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.product-card:hover img{transform:scale(1.04)}
.product-card-overlay{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(27,28,30,.9) 0%,rgba(27,28,30,.3) 60%,transparent 100%);
}
.product-card-body{
  position:relative;z-index:1;
  padding:clamp(24px,3vw,36px);
  width:100%;
  display:flex;flex-direction:column;gap:10px;
}
.product-card-tag{
  font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);
  font-stretch:100%;
}
.product-card h3{
  font-size:clamp(22px,2.5vw,34px);
  color:#fff;
  font-stretch:75%;
}
.product-card p{
  font-size:14px;line-height:1.5;
  color:rgba(255,255,255,.7);
  max-width:320px;
}
.product-card-spec{
  display:flex;gap:20px;padding-top:8px;
}
.product-card-spec span{
  font-family:var(--font-mono);
  font-size:12px;color:rgba(255,255,255,.55);
}
.product-card-spec span strong{color:var(--accent);font-weight:500}
.product-card .btn{margin-top:8px;align-self:flex-start}
.products-footer{
  margin-top:24px;text-align:center;
}
.products-footer a{
  font-size:15px;color:var(--gray-500);
  border-bottom:1px solid var(--gray-200);
  transition:color .15s,border-color .15s;
}
.products-footer a:hover{color:var(--ink);border-color:var(--ink)}

/* === SECTION: ŘEZ PODLAHOU (SVG) === */
.floor-section{
  background:var(--ink);
  padding:var(--section-pad) 0;
  overflow:hidden;
}
.floor-section .container{display:grid;grid-template-columns:1fr 1fr;gap:clamp(48px,6vw,96px);align-items:center}
.floor-svg-wrap{position:relative}
.floor-toggle{
  display:flex;gap:0;
  background:rgba(255,255,255,.08);
  border-radius:4px;
  padding:3px;
  margin-bottom:32px;
  width:fit-content;
}
.floor-toggle button{
  padding:8px 20px;
  border-radius:3px;
  font-size:13px;font-weight:600;
  color:rgba(255,255,255,.5);
  transition:.15s;
  font-family:var(--font-mono);
  letter-spacing:.05em;
}
.floor-toggle button.active{
  background:var(--accent);
  color:var(--ink);
}
.floor-layer-list{
  display:flex;flex-direction:column;gap:0;
}
.floor-layer{
  display:flex;align-items:baseline;gap:16px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
  opacity:0;
  transform:translateX(-12px);
  transition:opacity .4s,transform .4s;
}
.floor-layer.visible{opacity:1;transform:none}
.floor-layer-num{
  font-family:var(--font-mono);
  font-size:11px;color:var(--accent);
  width:20px;flex-shrink:0;
}
.floor-layer h4{font-size:15px;font-weight:600;color:#fff;font-stretch:100%}
.floor-layer-detail{font-size:13px;color:rgba(255,255,255,.55);line-height:1.4}
.floor-layer-val{
  font-family:var(--font-mono);font-size:12px;
  color:var(--accent);margin-left:auto;flex-shrink:0;
}

/* SVG diagram */
.floor-svg{
  width:100%;max-width:460px;margin:0 auto;
  filter:drop-shadow(0 20px 60px rgba(0,0,0,.5));
}
.fl-ground{fill:#3a3630}
.fl-eps{fill:#4a5e3a}
.fl-folie{fill:#7ea8c4;opacity:.6}
.fl-pasek{fill:#5a4a30;opacity:.8}
.fl-trubka{fill:none;stroke:#e07020;stroke-width:3;stroke-linecap:round}
.fl-anhydrit{fill:#d4cfc7;opacity:.9}
.fl-accent-line{stroke:var(--accent);stroke-width:1.5;stroke-dasharray:4 3;opacity:.7}

/* === SECTION: POSTUP === */
.process-section{background:var(--white);padding:var(--section-pad) 0}
.process-header{max-width:560px;margin-bottom:clamp(48px,6vw,80px)}
.process-steps{
  display:flex;flex-direction:column;gap:0;
  position:relative;
}
.process-steps::before{
  content:'';
  position:absolute;left:20px;top:0;bottom:0;width:1.5px;
  background:linear-gradient(to bottom,var(--accent),rgba(184,169,106,.08));
}
.process-step{
  display:flex;gap:clamp(24px,3vw,40px);
  padding:clamp(28px,3vw,40px) 0;
  border-bottom:1px solid var(--gray-100);
  position:relative;
}
.process-step:last-child{border-bottom:none}
.process-step-dot{
  width:42px;height:42px;flex-shrink:0;
  background:var(--white);border:1.5px solid var(--accent);
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:13px;color:var(--accent);
  position:relative;z-index:1;
}
.process-step-body{flex:1;display:flex;flex-direction:column;gap:8px;padding-top:8px}
.process-step-body h3{font-size:clamp(18px,1.6vw,22px);font-stretch:100%;letter-spacing:-0.01em}
.process-step-body p{font-size:15px;color:var(--gray-500);line-height:1.55;max-width:520px}

/* === SECTION: REFERENCE === */
.references-section{background:var(--gray-50);padding:var(--section-pad) 0}
.ref-grid{
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:clamp(16px,2vw,24px);
  margin-top:clamp(40px,5vw,56px);
}
.ref-card{
  background:var(--white);
  border-radius:4px;
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:box-shadow .2s;
}
.ref-card:hover{box-shadow:0 8px 32px rgba(27,28,30,.1)}
.ref-card-img{aspect-ratio:3/2;overflow:hidden;background:var(--gray-100)}
.ref-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.ref-card:hover .ref-card-img img{transform:scale(1.05)}
.ref-card-body{padding:clamp(20px,2.5vw,28px);flex:1;display:flex;flex-direction:column;gap:12px}
.ref-card-tag{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.ref-card-quote{font-size:15px;line-height:1.55;color:var(--gray-500);font-style:italic}
.ref-card-author{font-size:13px;font-weight:600;color:var(--ink);margin-top:auto}
.ref-card-loc{font-size:12px;color:var(--gray-300)}
.ref-footer{margin-top:40px;display:flex;align-items:center;justify-content:center;gap:24px;flex-wrap:wrap}
.ref-verify-link{
  font-size:14px;color:var(--gray-500);
  border-bottom:1px solid var(--gray-200);
  transition:color .15s;
}
.ref-verify-link:hover{color:var(--ink)}

/* === SECTION: TECHNIKA === */
.tech-section{background:var(--ink);padding:var(--section-pad) 0}
.tech-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:3px;
  margin-top:clamp(40px,5vw,56px);
}
.tech-photo{
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--gray-700);
}
.tech-photo img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.tech-photo:hover img{transform:scale(1.04)}
.tech-photo:first-child{aspect-ratio:16/9;grid-column:1/-1}
.tech-text{padding:clamp(32px,4vw,56px) 0 0}
.tech-text h2{color:#fff}
.tech-text .lead{color:rgba(255,255,255,.62)}
.tech-text .btn{margin-top:28px}

/* === SECTION: MAPA === */
.map-section{background:var(--white);padding:var(--section-pad) 0}
.map-header{max-width:560px;margin-bottom:clamp(40px,5vw,56px)}
.map-wrap{
  position:relative;
  background:var(--gray-50);
  border-radius:4px;
  overflow:hidden;
  padding:32px;
}
.vysocina-svg{
  width:100%;max-width:760px;margin:0 auto;
  display:block;
}

/* === SECTION: POPTÁVKA === */
.cta-section{
  background:var(--ink);
  padding:var(--section-pad) 0;
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(40px,6vw,80px);
  align-items:start;
}
.cta-text h2{color:#fff}
.cta-text .lead{color:rgba(255,255,255,.65);margin-top:16px}
.cta-promises{margin-top:32px;display:flex;flex-direction:column;gap:12px}
.cta-promise{
  display:flex;align-items:center;gap:12px;
  font-size:14px;color:rgba(255,255,255,.72);
}
.cta-promise::before{
  content:'';width:6px;height:6px;border-radius:50%;
  background:var(--accent);flex-shrink:0;
}
.cta-form{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  border-radius:4px;
  padding:clamp(24px,3vw,36px);
  display:flex;flex-direction:column;gap:16px;
}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{
  font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:rgba(255,255,255,.45);
}
.form-group input,
.form-group select,
.form-group textarea{
  height:48px;padding:0 16px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.15);
  border-radius:4px;
  color:#fff;font-family:var(--font-sans);font-size:15px;font-stretch:100%;
  transition:border-color .15s;
  -webkit-appearance:none;
}
.form-group input::placeholder,
.form-group textarea::placeholder{color:rgba(255,255,255,.3)}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  outline:none;border-color:var(--accent);
}
.form-group textarea{height:100px;padding:12px 16px;resize:vertical}
.form-group select{background-color:rgba(255,255,255,.08);color:rgba(255,255,255,.7)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:12px;color:rgba(255,255,255,.35);line-height:1.5}
.form-submit{
  height:56px;width:100%;
  background:var(--accent);color:var(--ink);
  font-weight:700;font-size:15px;letter-spacing:.02em;
  border-radius:4px;
  transition:.2s;
}
.form-submit:hover{background:#c8ba7a;transform:translateY(-1px)}

/* === PORADNA SECTION === */
.poradna-section{background:var(--gray-50);padding:var(--section-pad) 0}
.article-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:clamp(16px,2vw,24px);
  margin-top:clamp(40px,5vw,56px);
}
.article-card{background:var(--white);border-radius:4px;overflow:hidden;display:flex;flex-direction:column}
.article-card-body{padding:clamp(20px,2.5vw,28px);flex:1;display:flex;flex-direction:column;gap:12px}
.article-card-cat{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--green)}
.article-card h3{font-size:clamp(17px,1.4vw,21px);letter-spacing:-0.015em;font-stretch:100%}
.article-card p{font-size:14px;line-height:1.55;color:var(--gray-500)}
.article-card-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--gray-200);width:fit-content;transition:border-color .15s}
.article-card-link:hover{border-color:var(--ink)}

/* === FOOTER === */
footer{background:var(--ink);color:rgba(255,255,255,.72);padding:clamp(56px,7vw,96px) 0 clamp(32px,4vw,48px)}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:clamp(32px,4vw,56px);
  padding-bottom:clamp(40px,5vw,56px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .nav-logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.6;max-width:300px}
.footer-brand .nivel-line{border-top-color:rgba(184,169,106,.35);margin-top:24px}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#fff;margin-bottom:16px;font-stretch:100%}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.55);transition:color .15s}
.footer-col ul a:hover{color:#fff}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:24px;
  font-size:13px;color:rgba(255,255,255,.35);
  flex-wrap:wrap;gap:12px;
}
.footer-legal{display:flex;gap:16px;flex-wrap:wrap}
.footer-legal a{color:rgba(255,255,255,.35);transition:color .15s}
.footer-legal a:hover{color:rgba(255,255,255,.65)}
.footer-contact-block{margin-top:20px;display:flex;flex-direction:column;gap:6px}
.footer-contact-block a{font-size:15px;font-weight:600;color:#fff!important;text-decoration:none}
.footer-contact-block a:hover{color:var(--accent)!important}
.footer-contact-block span{font-size:12px;color:rgba(255,255,255,.4)}

/* === MOBILNÍ LIŠTA === */
.mobile-bar{
  display:none;
  position:fixed;bottom:0;left:0;right:0;z-index:850;
  height:64px;
  background:var(--white);
  border-top:1px solid var(--gray-100);
  box-shadow:0 -4px 20px rgba(27,28,30,.1);
}
.mobile-bar-inner{display:flex;height:100%}
.mobile-bar-btn{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:10px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  border-right:1px solid var(--gray-100);transition:background .15s;
}
.mobile-bar-btn:last-child{border-right:none}
.mobile-bar-tel{background:var(--green);color:#fff!important}
.mobile-bar-cta{background:var(--accent);color:var(--ink)!important}
.mobile-bar-info{color:var(--gray-500)}
.mobile-bar-btn svg{width:18px;height:18px}

/* === SCROLL REVEAL === */
.reveal{
  opacity:0;transform:translateY(20px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.visible{opacity:1;transform:none}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}

/* === PREFERS-REDUCED-MOTION === */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .reveal{opacity:1!important;transform:none!important}
  .hero-nivel-bar{transform:scaleX(1)!important}
  .hero-nivel-tag{opacity:1!important}
}

/* === RESPONSIVE — TABLET === */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr}
  .floor-section .container{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:1fr}
  .tech-photo:first-child{grid-column:auto}
  .ref-grid{grid-template-columns:1fr 1fr}
  .article-grid{grid-template-columns:1fr 1fr}
}

/* === RESPONSIVE — MOBIL === */
@media(max-width:767px){
  body{font-size:16px;padding-bottom:64px}
  #main-nav{height:60px}
  .nav-links{display:none}
  .nav-tel{display:none}
  .nav-burger{display:flex}
  .hero{min-height:100svh;max-height:none}
  .hero-h1{max-width:100%}
  .products-grid{grid-template-columns:1fr}
  .stats-row .container{grid-template-columns:1fr}
  .stats-row .container{background:none;gap:0}
  .stat-item{border-bottom:1px solid rgba(255,255,255,.08)}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .ref-grid{grid-template-columns:1fr}
  .article-grid{grid-template-columns:1fr}
  .mobile-bar{display:flex}
  .process-steps::before{left:18px}
  .floor-section .container{grid-template-columns:1fr}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}

/* === PRODUCT PAGES === */
.product-hero{position:relative;min-height:60vh;display:flex;align-items:flex-end}
.product-hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.product-hero-bg img{width:100%;height:100%;object-fit:cover;display:block}
.product-hero-overlay{position:absolute;inset:0;z-index:1;
  background:linear-gradient(to right,rgba(27,28,30,.85) 0%,rgba(27,28,30,.55) 50%,rgba(27,28,30,.15) 100%),
             linear-gradient(to top,rgba(27,28,30,.7) 0%,transparent 60%)}
.product-hero-content{position:relative;z-index:2;width:100%;padding:80px 0 64px}

/* Breadcrumb */
.breadcrumb{background:var(--bg-warm);border-bottom:1px solid var(--gray-100)}
.breadcrumb .container{padding-top:12px;padding-bottom:12px}
.breadcrumb ol{display:flex;gap:8px;list-style:none;margin:0;padding:0;font-size:13px;color:var(--text-muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"›";color:var(--gray-200)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--accent)}

/* Specs grid */
.specs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
@media(max-width:1024px){.specs-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.specs-grid{grid-template-columns:1fr}}
.spec-item{padding:24px;background:var(--bg-warm);border-radius:4px;border-left:2px solid var(--accent)}
.spec-label{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted);font-weight:700}
.spec-val{font-size:clamp(22px,2.2vw,30px);font-weight:700;color:var(--ink);margin:6px 0;font-family:var(--font-mono)}
.spec-item p{font-size:14px;color:var(--text-muted);line-height:1.55}

/* Use cases */
.use-cases{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:32px}
@media(max-width:600px){.use-cases{grid-template-columns:1fr}}
.use-case-card{display:block;padding:24px;background:#fff;border:1px solid var(--gray-100);border-radius:4px;
  color:inherit;text-decoration:none;transition:border-color .2s,box-shadow .2s}
.use-case-card:hover{border-color:var(--accent);box-shadow:0 4px 16px rgba(184,169,106,.12)}
.use-case-card h3{font-size:18px;margin-bottom:8px;color:var(--ink)}
.use-case-card p{font-size:14px;color:var(--text-muted);line-height:1.55}

/* Material rows */
.material-row{display:flex;align-items:center;gap:16px;padding:12px 0;border-bottom:1px solid var(--gray-100)}
.material-row:last-child{border-bottom:none}

/* Two-col layout for product pages */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;margin-top:40px}
@media(max-width:768px){.two-col{grid-template-columns:1fr;gap:32px}}

/* Gallery grid on product pages */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:32px}
@media(max-width:768px){.gallery-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.gallery-grid{grid-template-columns:1fr}}
.gallery-grid img{width:100%;height:220px;object-fit:cover;border-radius:4px;display:block}

/* CTA center */
.cta-center{text-align:center;max-width:680px;margin:0 auto;padding:60px 0}

/* Section page hero */
.section-page-hero{padding-top:140px}
@media(max-width:767px){.section-page-hero{padding-top:100px}}

/* Contact page */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
@media(max-width:768px){.contact-grid{grid-template-columns:1fr;gap:40px}}
.contact-cards{display:flex;flex-direction:column;gap:20px}
.contact-card{display:flex;gap:20px;align-items:flex-start;padding:20px;background:var(--bg-warm);border-radius:4px}
.contact-card-icon{width:40px;height:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  background:rgba(184,169,106,.12);border-radius:50%}
.contact-card-icon svg{width:20px;height:20px;stroke:var(--accent)}
.contact-card-label{font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:700;color:var(--text-muted);margin-bottom:4px}
.contact-card-val{font-size:18px;font-weight:600;color:var(--ink);display:block}
.contact-card-val[href]:hover{color:var(--accent)}
.contact-card-note{font-size:13px;color:var(--text-muted);margin-top:2px}
.contact-form textarea{resize:vertical;min-height:120px;padding-top:14px}
.map-small{margin-top:32px}

/* Dekujeme / error pages */
.page-center{min-height:60vh;display:flex;align-items:center;justify-content:center;text-align:center}
.page-center-content{max-width:560px;padding:40px 20px}

/* FAQ accordion */
.faq-list{display:flex;flex-direction:column;gap:0;margin-top:40px}
.faq-item{border-bottom:1px solid var(--gray-100)}
.faq-btn{width:100%;background:none;border:none;padding:20px 0;display:flex;align-items:center;justify-content:space-between;
  font-size:17px;font-weight:600;color:var(--ink);text-align:left;cursor:pointer;font-family:var(--font-sans)}
.faq-btn[aria-expanded="true"]{color:var(--accent)}
.faq-btn svg{flex-shrink:0;transition:transform .25s}
.faq-btn[aria-expanded="true"] svg{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-answer.open{max-height:400px}
.faq-answer p{padding:0 0 20px;font-size:15px;color:var(--text-muted);line-height:1.7}

/* Radio groups in forms */
.radio-group{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.radio-option{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg-warm);
  border:1px solid var(--gray-100);border-radius:4px;cursor:pointer;font-size:14px;transition:border-color .15s}
.radio-option:has(input:checked){border-color:var(--accent);background:rgba(184,169,106,.08)}
.radio-option input{width:15px;height:15px;accent-color:var(--accent)}

/* Kalkulace stránka */
.kalkulace-grid{display:grid;grid-template-columns:1fr 360px;gap:48px;align-items:start;margin-top:40px}
@media(max-width:900px){.kalkulace-grid{grid-template-columns:1fr}}
.kalkulace-form .form-section{margin-bottom:32px;padding-bottom:32px;border-bottom:1px solid var(--gray-100)}
.kalkulace-form .form-section:last-child{border-bottom:none}
.kalkulace-form .form-section h3{font-size:16px;font-weight:700;margin-bottom:16px;color:var(--ink)}
.kalkulace-sidebar{background:var(--ink);color:#fff;border-radius:4px;padding:28px;position:sticky;top:100px}
.kalkulace-sidebar h3{color:#fff;font-size:18px;margin-bottom:16px}
.kal-promise{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.kal-promise:last-child{border-bottom:none}
.kal-promise-check{color:var(--green);font-size:16px;flex-shrink:0;margin-top:2px}
.kal-promise p{font-size:13px;color:rgba(255,255,255,.65);margin-top:2px}

/* Poradna / blog */
.poradna-hero{padding-top:140px;padding-bottom:60px}
@media(max-width:767px){.poradna-hero{padding-top:100px}}
.article-full{max-width:760px;margin:0 auto}
.article-full h2{margin-top:48px;margin-bottom:16px}
.article-full p{font-size:17px;line-height:1.75;margin-bottom:18px}
.article-full ul{margin:0 0 18px 24px}
.article-full li{font-size:16px;line-height:1.7;margin-bottom:6px}