/* Layout: úzký sloupec s technickým schématem domu v úvodu; sekce oddělené linkou „potrubí“ */
:root{
  --bg:#F5F3EE; --surface:#FFFFFF; --ink:#1E3448; --muted:#55606E; --line:#DAD6CC;
  --accent:#E8663D; --accent-text:#B3441C; --water:#2E78A8; --return:#1E3448; --ph:#FCE6DC;
  --f-display:'Manrope',system-ui,sans-serif;
  --f-body:'Source Sans 3','Segoe UI',system-ui,sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --maxw:1120px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#122231; --surface:#1A2E42; --ink:#EEF1F4; --muted:#A9B8C8; --line:#2C4258;
  --accent:#F07A52; --accent-text:#F4926F; --water:#6FB3DE; --return:#A9B8C8; --ph:#3A2E2E; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#122231; --surface:#1A2E42; --ink:#EEF1F4; --muted:#A9B8C8; --line:#2C4258;
  --accent:#F07A52; --accent-text:#F4926F; --water:#6FB3DE; --return:#A9B8C8; --ph:#3A2E2E; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6;margin:0}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:20px}
h1,h2,h3{font-family:var(--f-display);line-height:1.15;text-wrap:balance;margin:0}
h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:800;letter-spacing:-0.02em}
h2{font-size:clamp(1.6rem,3.2vw,2.2rem);font-weight:800;letter-spacing:-0.01em}
h3{font-size:1.2rem;font-weight:700}
p{margin:0}
a{color:var(--accent-text)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.eyebrow{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.ph{background:var(--ph);color:var(--ink);padding:0 .3em;border-radius:3px;font-family:var(--f-mono);font-size:.9em}
.muted{color:var(--muted)}

/* Header */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;gap:24px;padding-block:12px}
.brand{display:flex;align-items:center;color:var(--ink);text-decoration:none}
.brand svg{height:34px;width:auto;display:block}
nav.main{display:flex;gap:22px;margin-left:auto;flex-wrap:wrap}
nav.main a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
nav.main a:hover{color:var(--accent-text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:8px;font-family:var(--f-display);font-weight:700;font-size:1rem;text-decoration:none;border:2px solid var(--ink);cursor:pointer}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{background:transparent;color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg)}
@media (max-width:760px){nav.main{display:none}header.top .btn{margin-left:auto;min-height:42px;padding:0 14px;font-size:.9rem}}

/* Hero */
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;padding-block:64px 56px}
.hero-text{display:flex;flex-direction:column;gap:22px;min-width:0}
.hero-text .lead{font-size:1.15rem;color:var(--muted);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-fig{min-width:0}
.hero-fig svg{width:100%;height:auto;display:block}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;padding-block:40px}}
.sch-line{fill:none;stroke:var(--ink);stroke-width:2.5;stroke-linejoin:round;stroke-linecap:round}
.sch-thin{fill:none;stroke:var(--muted);stroke-width:1.5}
.sch-fill{fill:var(--surface);stroke:var(--ink);stroke-width:2.5}
.sch-sup{fill:none;stroke:var(--accent);stroke-width:4;stroke-linecap:round;stroke-linejoin:round}
.sch-ret{fill:none;stroke:var(--return);stroke-width:4;stroke-linecap:round;stroke-linejoin:round;opacity:.55}
.sch-wat{fill:none;stroke:var(--water);stroke-width:4;stroke-linecap:round;stroke-linejoin:round}
.sch-el{fill:none;stroke:var(--accent);stroke-width:2;stroke-dasharray:5 5}
.sch-lab{font-family:var(--f-mono);font-size:12px;fill:var(--muted)}
.sch-sun{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linecap:round}
.legend{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:10px;font-family:var(--f-mono);font-size:.75rem;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{display:inline-block;width:18px;height:4px;border-radius:2px}

/* Sections */
section.block{padding-block:72px;border-top:1px solid var(--line)}
.sec-head{display:flex;flex-direction:column;gap:10px;margin-bottom:36px;max-width:40em}

.services{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
@media (max-width:900px){.services{grid-template-columns:1fr}}
.svc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:28px;display:flex;flex-direction:column;gap:14px;min-width:0}
.svc-ico{width:44px;height:44px;color:var(--accent)}
.svc ul{margin:0;padding-left:1.1em;display:flex;flex-direction:column;gap:4px}
.svc li::marker{color:var(--accent)}
.svc .note{font-size:.92rem;color:var(--muted);border-top:1px dashed var(--line);padding-top:12px;margin-top:auto}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(var(--n,4),minmax(0,1fr));gap:28px;counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;left:22px;right:calc((100% - (var(--n,4) - 1) * 28px) / var(--n,4) - 23px);top:21px;height:4px;background:var(--accent);border-radius:2px;opacity:.9}
.steps li{position:relative;display:flex;flex-direction:column;gap:10px;min-width:0}
.steps li::before{counter-increment:s;content:counter(s);width:46px;height:46px;border-radius:50%;background:var(--bg);border:4px solid var(--accent);display:flex;align-items:center;justify-content:center;font-family:var(--f-display);font-weight:800;font-size:1.1rem;color:var(--ink);position:relative}
.steps p{color:var(--muted);font-size:.97rem}
@media (max-width:900px){.steps{grid-template-columns:1fr;gap:22px}.steps::before{left:21px;right:auto;top:22px;bottom:22px;width:4px;height:auto}
  .steps li{padding-left:66px}.steps li::before{position:absolute;left:0;top:0}}

.why{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 48px}
@media (max-width:760px){.why{grid-template-columns:1fr}}
.why div{display:flex;flex-direction:column;gap:6px;padding-left:18px;border-left:3px solid var(--line);min-width:0}
.why p{color:var(--muted)}

.area{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
@media (max-width:860px){.area{grid-template-columns:1fr;gap:24px}}
.towns{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.towns li{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:4px 14px;font-size:.95rem}

/* Form */
.inq{display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:start}
@media (max-width:900px){.inq{grid-template-columns:1fr;gap:28px}}
.contact-list{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.contact-list div{display:flex;flex-direction:column}
.contact-list .v{font-family:var(--f-display);font-weight:700;font-size:1.15rem}
form.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:28px;display:flex;flex-direction:column;gap:18px;min-width:0}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.row{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
label,.legend-t{font-weight:600;font-size:.95rem}
input[type=text],input[type=tel],input[type=email],textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px 12px;min-height:46px;width:100%}
textarea{min-height:120px;resize:vertical}
fieldset{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.checks{display:flex;flex-wrap:wrap;gap:8px}
.chk{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;padding:8px 14px;min-height:44px;cursor:pointer;font-weight:600;background:var(--bg)}
.chk input{accent-color:var(--accent);width:18px;height:18px}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.93rem;color:var(--muted)}
.consent input{accent-color:var(--accent);width:18px;height:18px;margin-top:4px;flex:none}
.msg{border-radius:8px;padding:12px 14px;font-size:.95rem;border:1px solid var(--line);background:var(--bg)}
.msg.ok{border-color:var(--water)}
.msg.err{border-color:var(--accent)}

/* Footer */
footer{border-top:1px solid var(--line);padding-block:48px 40px;font-size:.95rem}
.foot{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:32px}
@media (max-width:760px){.foot{grid-template-columns:1fr}}
.foot > div{display:flex;flex-direction:column;gap:8px;min-width:0}
.foot svg{height:28px;width:auto;color:var(--ink);align-self:flex-start}
details{margin-top:32px;border-top:1px solid var(--line);padding-top:20px}
summary{cursor:pointer;font-weight:600}
details .gdpr{display:flex;flex-direction:column;gap:10px;margin-top:14px;color:var(--muted);max-width:48em}
.copy{margin-top:28px;color:var(--muted);font-size:.85rem}

/* Fotogalerie */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.gallery figure{margin:0;display:flex;flex-direction:column;gap:8px;min-width:0}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;border:1px solid var(--line);display:block;background:var(--surface)}
.gallery figcaption{font-size:.93rem;color:var(--muted)}
.contact-list a{color:var(--ink);text-decoration:none}
.contact-list a:hover{color:var(--accent-text)}