/* Poskladajte si svoju strechu — dizajnové tokeny a rozloženie */
:root{
  --canvas:#F5F6F3;--surface:#fff;--text:#18221D;--muted:#526058;--border:#DCE2DC;--ctrl:#7A877E;
  --primary:#245C43;--primary-h:#1c4a36;--selected:#EAF3ED;
  --warn:#855000;--warn-bg:#FFF4DC;--err:#AC3028;--err-bg:#FFF0EE;--info:#245B85;--info-bg:#EDF5FC;
  --r-s:8px;--r-m:12px;--r-l:16px;--lista-v:64px;
  --font:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-padding-top:72px}
body{margin:0;background:var(--canvas);color:var(--text);font:16px/24px var(--font);-webkit-font-smoothing:antialiased;padding-bottom:calc(var(--lista-v) + env(safe-area-inset-bottom))}
h1{font-size:28px;line-height:34px;margin:0 0 8px;font-weight:700}
h2{font-size:18px;line-height:24px;margin:0 0 12px}
a{color:var(--primary)}
button{font:inherit;color:inherit}
small{font-size:14px;line-height:20px;color:var(--muted)}
:focus-visible{outline:3px solid var(--primary);outline-offset:2px;border-radius:4px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.preskoc{position:absolute;left:-999px;top:8px;background:var(--surface);padding:8px 12px;z-index:50}.preskoc:focus{left:8px}
.obal{max-width:1680px;margin:0 auto;padding:0 24px}
.pomoc{font-size:14px;line-height:20px;color:var(--muted);margin:6px 0 0}
.pozn{font-size:14px;line-height:20px;color:var(--muted)}

/* hlavička */
.hlavicka{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.hlavicka-in{display:flex;align-items:center;justify-content:space-between;height:56px;gap:16px}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--text);font-weight:600}.brand svg{width:26px;height:26px;color:var(--primary)}
.hlavicka nav{display:flex;gap:4px;overflow-x:auto}.hlavicka nav a{padding:8px 12px;border-radius:var(--r-s);text-decoration:none;color:var(--muted);white-space:nowrap}
.hlavicka nav a[aria-current]{color:var(--primary);background:var(--selected);font-weight:600}
.uvod{padding:32px 0 16px;max-width:820px}.uvod-t{font-size:18px;line-height:28px;margin:0 0 8px}.uvod-p{margin:0;color:var(--muted);font-size:14px;line-height:20px}

/* rozloženie */
.rozlozenie{display:grid;grid-template-columns:300px minmax(0,1fr) 300px;gap:24px;align-items:start;padding-bottom:32px}
.sprievodca,.rozpocet-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l)}
.rozpocet-panel{position:sticky;top:72px;max-height:calc(100vh - 88px);overflow:auto;padding:16px}
@media (max-height:700px){.rozpocet-panel{position:static;max-height:none}}
.rozpocet-hlava{display:flex;justify-content:space-between;align-items:center;gap:8px}.rozpocet-hlava h2{margin:0}
#rozpocet-zavri{display:none}

/* sprievodca */
.krok{border-bottom:1px solid var(--border)}.krok:first-child summary{border-radius:var(--r-l) var(--r-l) 0 0}
.krok summary{display:flex;align-items:center;gap:10px;padding:14px 16px;cursor:pointer;font-weight:600;list-style:none;min-height:44px}
.krok summary::-webkit-details-marker{display:none}.krok summary::after{content:"";margin-left:auto;width:8px;height:8px;border-right:2px solid var(--ctrl);border-bottom:2px solid var(--ctrl);transform:rotate(-45deg);transition:transform .15s}
.krok[open] summary::after{transform:rotate(45deg)}
.krok-c{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--selected);color:var(--primary);font-size:13px;font-weight:700}
.krok-obsah{padding:0 16px 16px}
fieldset{border:0;padding:0;margin:0 0 16px}legend,.popisok{font-weight:600;padding:0;margin:0 0 6px;display:block}
.volba{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--border);border-radius:var(--r-s);margin-bottom:6px;cursor:pointer;min-height:44px}
.volba:has(input:checked){border-color:var(--primary);background:var(--selected)}
.volba input{margin:4px 0 0;accent-color:var(--primary);flex:none}.volba span{display:flex;flex-direction:column}
.volba-r{display:flex;gap:8px;align-items:center;padding:6px 0;min-height:44px}.volba-r input{accent-color:var(--primary)}
.prepinac{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--border);cursor:pointer;min-height:44px}
.prepinac input{width:20px;height:20px;margin:2px 0 0;accent-color:var(--primary);flex:none}.prepinac span{display:flex;flex-direction:column}
.pole{margin:12px 0}.pole label{display:block;font-weight:600;margin-bottom:4px}
.vstup{display:flex;align-items:center;border:1px solid var(--ctrl);border-radius:var(--r-s);background:var(--surface);height:44px}
.vstup input{border:0;background:none;flex:1;min-width:0;padding:0 12px;font:inherit;height:100%;font-variant-numeric:tabular-nums}
.vstup input:focus{outline:0}.vstup:focus-within{outline:3px solid var(--primary);outline-offset:1px}
.vstup .jed{padding:0 12px;color:var(--muted);border-left:1px solid var(--border);height:100%;display:flex;align-items:center}
[aria-invalid=true]{color:var(--err)}.chyba{color:var(--err);font-size:14px;line-height:20px;margin:4px 0 0;min-height:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:10px 16px;border:1px solid var(--ctrl);border-radius:var(--r-s);background:var(--surface);cursor:pointer;font-weight:600;text-decoration:none}
.btn:hover{background:var(--selected)}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-h)}
.btn-mal{min-height:36px;padding:6px 12px;font-size:14px}.btn-reset{margin:12px 16px 16px}.link{background:none;border:0;color:var(--primary);text-decoration:underline;cursor:pointer;padding:0}

/* karty výberu */
.karty,.tvary{display:grid;gap:8px}
.karta-vyber{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:start;text-align:left;padding:10px;border:1px solid var(--border);border-radius:var(--r-m);background:var(--surface);cursor:pointer;width:100%}
.karta-vyber:hover:not(:disabled){border-color:var(--ctrl)}.karta-vyber.vybrane{border-color:var(--primary);background:var(--selected);box-shadow:inset 0 0 0 1px var(--primary)}
.karta-vyber:disabled{cursor:not-allowed;opacity:.72}.karta-vyber svg{width:56px;height:36px}
.kv-t{display:flex;flex-direction:column;gap:2px;min-width:0}.kv-n{font-weight:600}.kv-p{font-size:14px;line-height:20px;color:var(--muted)}
.kv-c{font-size:14px;line-height:20px;font-variant-numeric:tabular-nums}.kv-c em{color:var(--warn);font-style:normal;font-weight:600}
.kv-w{font-size:13px;line-height:18px;color:var(--err);font-weight:600}.kv-s{font-size:13px;color:var(--primary);font-weight:600;white-space:nowrap}
.vzorka{display:block;width:56px;height:56px;border-radius:var(--r-s);background:var(--f);position:relative;overflow:hidden;border:1px solid rgba(0,0,0,.15)}
.vzorka::after{content:"";position:absolute;inset:0}
.vz-skridla::after{background:repeating-linear-gradient(180deg,transparent 0 10px,rgba(0,0,0,.35) 10px 12px),repeating-linear-gradient(90deg,transparent 0 18px,rgba(0,0,0,.25) 18px 19px)}
.vz-panel::after{background:repeating-linear-gradient(90deg,transparent 0 12px,rgba(0,0,0,.35) 12px 14px,rgba(255,255,255,.15) 14px 15px)}
.vz-trapez::after{background:repeating-linear-gradient(90deg,transparent 0 5px,rgba(0,0,0,.3) 5px 7px,rgba(255,255,255,.15) 7px 8px)}
.vz-beton::after{background:repeating-linear-gradient(180deg,transparent 0 9px,rgba(0,0,0,.35) 9px 11px),repeating-linear-gradient(90deg,transparent 0 12px,rgba(0,0,0,.2) 12px 13px)}
.vz-palena::after{background:repeating-linear-gradient(180deg,transparent 0 8px,rgba(0,0,0,.35) 8px 10px),repeating-linear-gradient(90deg,transparent 0 9px,rgba(0,0,0,.2) 9px 10px)}
.farby{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.farba{width:44px;height:44px;border-radius:50%;border:2px solid var(--border);background:var(--f);cursor:pointer;position:relative;padding:0}
.farba.vybrane{border-color:var(--primary);box-shadow:0 0 0 2px var(--surface),0 0 0 4px var(--primary)}
.farba.vybrane::after{content:"✓";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-weight:700;text-shadow:0 0 3px #000}
.farba-n{font-size:14px;color:var(--muted);flex-basis:100%}

/* komponenty */
.komponenty{display:grid;gap:6px}
.komp{display:grid;gap:4px;text-align:left;padding:10px 12px;border:1px solid var(--border);border-radius:var(--r-m);background:var(--surface);cursor:pointer;width:100%}
.komp:hover,.komp.aktivny{border-color:var(--primary);background:var(--selected)}
.komp-h{display:flex;justify-content:space-between;gap:8px;align-items:center}.komp-n{font-weight:600}
.komp-s{font-size:14px;line-height:20px;color:var(--muted)}.komp-c{font-size:14px;font-variant-numeric:tabular-nums}
.tag{font-size:12px;line-height:16px;padding:2px 8px;border-radius:999px;font-weight:600;white-space:nowrap}
.tag-ok{background:var(--selected);color:var(--primary)}.tag-volit{background:#eef0ee;color:var(--muted)}.tag-pozor{background:var(--warn-bg);color:var(--warn)}.tag-zle{background:var(--err-bg);color:var(--err)}

/* model */
.model{min-width:0;max-width:100%}.rozlozenie>*{min-width:0}
.model-hlava{display:flex;justify-content:space-between;align-items:center;padding:0 4px 8px;font-size:14px;color:var(--muted)}
.model-stitok{background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:2px 10px}.model-rezim{font-weight:600;color:var(--text)}
.model-plocha{position:relative;width:100%;background:linear-gradient(#f7f8f5,#e8ebe4);border:1px solid var(--border);border-radius:var(--r-l);overflow:hidden;aspect-ratio:16/10;min-height:320px}
#scena{width:100%;height:100%;display:block;cursor:grab;outline-offset:-3px}#scena:active{cursor:grabbing}
.model-nastroje{position:absolute;left:12px;bottom:12px;right:12px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;pointer-events:none}
.nast-skupina{display:flex;gap:4px;background:rgba(255,255,255,.92);border:1px solid var(--border);border-radius:var(--r-s);padding:4px;pointer-events:auto;backdrop-filter:blur(4px)}
.nast{min-width:44px;min-height:44px;padding:0 10px;border:0;background:none;border-radius:6px;cursor:pointer;font-weight:600;font-size:14px}.nast:hover{background:var(--selected)}
.model-fallback{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;background:var(--surface)}
.model-fallback[hidden],.vrstvy-panel[hidden],.zmena[hidden],#rozpocet-porovnanie[hidden],#pole-podhlad[hidden],#pole-novyKrov[hidden],.oznam[hidden]{display:none}
.model-rezimy{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0}
.model-rezimy label{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--ctrl);border-radius:var(--r-s);background:var(--surface);cursor:pointer;font-weight:600}
.model-rezimy label:has(input:checked){background:var(--selected);border-color:var(--primary);color:var(--primary)}.model-rezimy input{position:absolute;opacity:0;width:1px;height:1px}
.model-rezimy label:has(input:focus-visible){outline:3px solid var(--primary);outline-offset:2px}
#btn-pod-krytinou{margin-left:auto}
.vrstvy-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-m);padding:12px 16px;margin-bottom:12px}
.vrstvy-panel label{font-weight:600;display:block}.vrstvy-panel input[type=range]{width:100%;accent-color:var(--primary);height:44px;margin:0}
.legenda{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.legenda button{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:4px 10px;border:1px solid var(--border);border-radius:999px;background:var(--surface);cursor:pointer;font-size:14px}
.legenda i{width:14px;height:14px;border-radius:3px;background:var(--f);border:1px solid rgba(0,0,0,.2)}
.zmena{background:var(--info-bg);color:var(--info);border:1px solid #c9dcec;border-radius:var(--r-m);padding:12px 16px;margin-bottom:12px;font-size:14px;line-height:20px}
.zmena .link{color:var(--info);margin-left:6px}

/* rozmery */
.rozmery{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);padding:16px}
.rozmery-mriezka{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px}
.rozmery-vstupy{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 16px}.rozmery-vstupy .pole{margin:8px 0;min-width:0}
.podorys{max-width:280px}.podorys svg{width:100%;height:auto;display:block}
.plochy{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 16px;margin-top:8px}
.plocha{display:flex;flex-direction:column;font-variant-numeric:tabular-nums}.plocha-n{font-size:13px;line-height:18px;color:var(--muted)}.plocha strong{font-size:16px}

/* rozpočet */
.sucet{padding-bottom:12px;border-bottom:1px solid var(--border);margin-bottom:12px}
.sucet-n{font-size:14px;color:var(--muted)}.sucet-c{font-size:28px;line-height:34px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--primary)}
.sucet-p{font-size:13px;line-height:18px;color:var(--muted);margin-top:4px}.sucet-nacenit{font-size:14px;line-height:20px;color:var(--warn);font-weight:600;margin-top:6px}
.stavy{list-style:none;margin:0 0 12px;padding:0;display:grid;gap:6px;font-size:14px;line-height:20px}
.stavy li{padding:6px 10px 6px 30px;border-radius:var(--r-s);position:relative}.stavy li::before{position:absolute;left:10px;top:6px;font-weight:700}
.stavy .ok{background:var(--selected);color:var(--primary)}.stavy .ok::before{content:"✓"}
.stavy .pozor{background:var(--warn-bg);color:var(--warn)}.stavy .pozor::before{content:"!"}
.stavy .zle{background:var(--err-bg);color:var(--err)}.stavy .zle::before{content:"✕"}
.stavy .info{background:var(--info-bg);color:var(--info)}.stavy .info::before{content:"i"}
.upozornenia{display:grid;gap:6px;margin-bottom:12px}
.upoz{display:block;text-align:left;width:100%;border:1px solid transparent;border-radius:var(--r-s);padding:8px 10px;font-size:14px;line-height:20px;cursor:pointer;background:var(--info-bg);color:var(--info)}
.upoz-t{display:block;font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.02em}
.upoz-chyba{background:var(--err-bg);color:var(--err)}.upoz-overit,.upoz-volitelne{background:var(--warn-bg);color:var(--warn)}
.skupina{border-top:1px solid var(--border)}.skupina summary{display:flex;justify-content:space-between;gap:8px;padding:10px 0;cursor:pointer;font-weight:600;list-style:none;min-height:44px;align-items:center}
.skupina summary::-webkit-details-marker{display:none}.skupina-c{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600}.skupina-c small{color:var(--warn)}
.polozka{padding:6px 0 8px 10px;border-left:3px solid var(--border);margin-bottom:8px;cursor:pointer;border-radius:0 6px 6px 0}.polozka:hover{background:var(--canvas)}
.polozka.nacenit{border-left-color:var(--warn)}
.polozka-h{display:flex;justify-content:space-between;gap:8px;font-size:14px;line-height:20px}.polozka-n{font-weight:600}.polozka-s{white-space:nowrap;font-variant-numeric:tabular-nums}
.polozka.nacenit .polozka-s{color:var(--warn)}.volit{font-weight:400}
.polozka-d{font-size:13px;line-height:18px;color:var(--muted);margin-top:2px;overflow-wrap:anywhere}
.zdroj{font-size:12px;padding:1px 6px;border-radius:4px;display:inline-block;max-width:100%;overflow-wrap:anywhere}.zdroj-eshop{background:var(--selected);color:var(--primary)}.zdroj-model{background:#eef0ee;color:var(--muted)}.zdroj-chyba{background:var(--warn-bg);color:var(--warn);white-space:normal}
.rozpocet-akcie{display:grid;gap:8px;margin-top:16px}

/* lišta, oznam, dialógy */
.lista{position:fixed;left:0;right:0;bottom:0;height:calc(var(--lista-v) + env(safe-area-inset-bottom));padding:0 16px env(safe-area-inset-bottom);background:var(--surface);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px;z-index:30;box-shadow:0 -4px 16px rgba(0,0,0,.06)}
.lista-c{font-size:20px;line-height:24px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--primary)}.lista-p{font-size:13px;line-height:18px;color:var(--muted)}
.oznam{position:fixed;left:50%;bottom:calc(var(--lista-v) + 16px);transform:translateX(-50%);background:var(--text);color:#fff;padding:10px 16px;border-radius:var(--r-s);z-index:40;font-size:14px;max-width:calc(100% - 32px)}
.dialog{border:0;border-radius:var(--r-l);padding:24px;max-width:min(560px,calc(100vw - 32px));width:100%;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.dialog::backdrop{background:rgba(24,34,29,.45)}.dialog-siroky{max-width:min(960px,calc(100vw - 32px))}.dialog-zavri{position:absolute;top:12px;right:12px}
.dialog h2{font-size:22px;line-height:28px;margin:0 32px 12px 0}
.karta-dl dt{font-weight:700;margin-top:12px;font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.02em}.karta-dl dd{margin:4px 0 0}
.karta-pol{list-style:none;padding:0;margin:0;display:grid;gap:6px}.karta-pol li{display:grid;grid-template-columns:1fr auto;gap:2px 12px;font-size:14px;line-height:20px;padding:6px 0;border-bottom:1px solid var(--border)}.karta-pol li span:last-child{grid-column:1/-1}
.viac{margin-top:12px}.viac summary{cursor:pointer;font-weight:600;color:var(--primary);min-height:44px;display:flex;align-items:center}.viac p{margin:4px 0 0}
.karta-akcie{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tab-obal{overflow-x:auto;margin:0 -8px}.porovnanie{border-collapse:collapse;width:100%;min-width:520px;font-size:14px;line-height:20px}
.porovnanie th,.porovnanie td{padding:8px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}.porovnanie thead th{font-size:16px}.porovnanie tbody th{color:var(--muted);font-weight:600;white-space:nowrap}
.prazdne{padding:24px 0;color:var(--muted)}
.pata{padding:24px 0 32px;border-top:1px solid var(--border);color:var(--muted);font-size:14px;line-height:20px}
.chyba-velka{padding:48px;text-align:center;color:var(--err)}

@media (min-width:1280px){.lista{display:none}body{padding-bottom:0}.oznam{bottom:24px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* tablet */
@media (max-width:1279px){
  .rozlozenie{grid-template-columns:280px minmax(0,1fr);gap:16px}
  .rozpocet-panel{position:fixed;left:0;right:0;bottom:0;top:auto;max-height:80vh;border-radius:var(--r-l) var(--r-l) 0 0;transform:translateY(100%);transition:transform .2s;z-index:35;box-shadow:0 -12px 40px rgba(0,0,0,.2);padding-bottom:calc(16px + env(safe-area-inset-bottom))}
  .rozpocet-otvoreny .rozpocet-panel{transform:none}.rozpocet-otvoreny .lista{z-index:36}#rozpocet-zavri{display:inline-flex}
  .rozmery-mriezka{grid-template-columns:minmax(0,1fr)}
}
/* mobil */
@media (max-width:767px){
  .obal{padding:0 16px}.uvod{padding:20px 0 12px}h1{font-size:24px;line-height:30px}
  .rozlozenie{display:flex;flex-direction:column}
  .model{order:-1}.model-plocha{aspect-ratio:auto;height:min(380px,55vh);min-height:300px}
  .model-nastroje{position:static;margin-top:8px;pointer-events:auto}.nast-skupina{flex:1;justify-content:space-around}
  .rozmery-vstupy{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  #btn-pod-krytinou{margin-left:0;width:100%}
  .karta-vyber{grid-template-columns:48px 1fr}.kv-s{grid-column:2}.vzorka{width:48px;height:48px}
  .dialog{padding:20px 16px}
  .zdroj{white-space:normal}.polozka-h{flex-wrap:wrap}
}
@media (max-width:420px){.rozmery-vstupy{grid-template-columns:minmax(0,1fr)}.plochy{grid-template-columns:minmax(0,1fr)}.hlavicka nav a{padding:8px}}

/* ===== 2026-09-12: hlavička na mobile, vrstvy modelu, vizualizácie, porovnanie krytín ===== */
@media (max-width:767px){
  .hlavicka-in{height:auto;flex-wrap:wrap;padding:8px 0;row-gap:4px}
  .hlavicka nav{width:100%;flex-wrap:wrap;overflow:visible;gap:2px}.hlavicka nav a{padding:6px 8px;font-size:14px}
}

/* vrstvy zobrazeného modelu */
.vrstvy-model{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);padding:16px;margin-bottom:12px}
.vrstvy-hlava{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}.vrstvy-hlava h2{margin:0}
.vrstvy-zoznam{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:6px}
.vrstva{display:grid;grid-template-columns:32px 1fr;gap:12px;align-items:start;text-align:left;width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--r-m);background:var(--surface);cursor:pointer}
.vrstva:hover,.vrstva.aktivny{border-color:var(--primary);background:var(--selected)}
.vrstva-c{display:grid;place-items:center;width:32px;height:32px;border-radius:8px;background:var(--f);border:1px solid rgba(0,0,0,.18);font-weight:700;font-size:13px;color:#fff;text-shadow:0 0 3px rgba(0,0,0,.8);font-variant-numeric:tabular-nums}
.vrstva-c.svetla{color:var(--text);text-shadow:none}
.vrstva-t{display:flex;flex-direction:column;gap:2px;min-width:0}.vrstva-n{font-weight:600}
.vrstva-s{font-size:14px;line-height:20px}.vrstva-f{font-size:14px;line-height:20px;color:var(--muted)}
.vrstvy-static{color:var(--muted);font-size:14px;line-height:20px}
.vrstvy-pozn{margin-top:10px}

/* vizualizácie */
.vizual{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);padding:16px;margin-bottom:12px}
.vizual-hlava{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}.vizual-hlava h2{margin:0}
.vizual-hlavna{margin:12px 0 0}.vizual-hlavna>a{display:block;border-radius:var(--r-m);overflow:hidden;border:1px solid var(--border);background:#e9e4d8}
.vizual-hlavna img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}
.vizual-hlavna figcaption{font-size:14px;line-height:20px;color:var(--muted);margin-top:8px}.vizual-hlavna figcaption strong{color:var(--text)}
.vizual-ai{display:inline-block;background:var(--warn-bg);color:var(--warn);border-radius:4px;padding:0 6px;font-weight:600;margin:0 4px}
.vizual-prazdne{margin:12px 0 0;padding:16px;border:1px dashed var(--ctrl);border-radius:var(--r-m);color:var(--muted)}
.vizual-galeria{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.vizual-min{display:grid;gap:6px;width:100%;padding:6px;border:1px solid var(--border);border-radius:var(--r-m);background:var(--surface);cursor:pointer;text-align:left}
.vizual-min:hover{border-color:var(--ctrl)}.vizual-min.vybrane{border-color:var(--primary);background:var(--selected);box-shadow:inset 0 0 0 1px var(--primary)}
.vizual-min img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;object-position:50% 35%;border-radius:8px}
.vizual-min-t{display:flex;flex-direction:column;gap:0;padding:0 4px 2px}.vizual-min-n{font-size:14px;line-height:18px;font-weight:600}
.vizual-min-t small{font-size:12px;line-height:16px}
.vizual-min--bez{display:grid;place-items:center;aspect-ratio:3/2;border-radius:8px;background:var(--canvas);color:var(--muted);font-size:13px;text-align:center;padding:8px}
.vizual .pozn{margin:12px 0 0}
.dialog-foto{max-width:min(1200px,calc(100vw - 32px));padding:16px}.dialog-foto img{display:block;width:100%;height:auto;border-radius:var(--r-m)}
.dialog-foto figcaption{font-size:14px;line-height:20px;color:var(--muted);margin-top:8px}.dialog-foto .dialog-zavri{top:20px;right:20px}
.btn-porovnat-krytiny{margin-top:12px;width:100%}

/* porovnanie krytín */
.porovnanie-krytin{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);padding:20px 16px;margin:0 0 32px}
.pk-hlava{max-width:820px}.pk-hlava h2{font-size:22px;line-height:28px}
.pk-obal{overflow-x:auto;margin:16px -16px 0;padding:0 16px;-webkit-overflow-scrolling:touch}
.pk{border-collapse:separate;border-spacing:0;min-width:100%;font-size:14px;line-height:20px}
.pk th,.pk td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;min-width:170px;max-width:240px}
.pk thead th{font-size:15px;position:sticky;top:56px;background:var(--surface);z-index:2;border-bottom:2px solid var(--ctrl)}
.pk tbody th{color:var(--muted);font-weight:600;position:sticky;left:0;background:var(--surface);z-index:1;min-width:150px;max-width:190px;box-shadow:1px 0 0 var(--border)}
.pk thead th:first-child{left:0;z-index:3}
.pk .vybrane{background:var(--selected)}.pk thead th.vybrane{border-bottom-color:var(--primary)}
.pk-n{display:block}.pk thead .tag{margin-top:4px}
.pk-foto{border:0;padding:0;background:none;cursor:pointer;display:block;border-radius:8px;overflow:hidden}
.pk-foto img{display:block;width:100%;max-width:220px;height:auto;aspect-ratio:3/2;object-fit:cover;object-position:50% 35%}
.pk-bez{display:grid;place-items:center;aspect-ratio:3/2;max-width:220px;border-radius:8px;background:var(--canvas);color:var(--muted);font-size:13px}
.pk-nacen{color:var(--warn);font-style:normal;font-weight:600}
.pk-farby{display:inline-flex;flex-wrap:wrap;gap:4px;margin-top:4px}.pk-farby i{width:16px;height:16px;border-radius:50%;background:var(--f);border:1px solid rgba(0,0,0,.2)}
.pk td .tag{display:inline-block;margin-top:2px;white-space:normal}
.pk-rozdiel-viac{color:var(--err)}.pk-rozdiel-menej{color:var(--primary)}
.pk-pozn{margin-top:12px}
@media (max-width:767px){.pk th,.pk td{min-width:150px;padding:8px}.pk tbody th{min-width:120px;max-width:140px;font-size:13px}.pk thead th{top:0}.pk-foto img,.pk-bez{max-width:150px}}

/* ===== tvary striech, výber pod modelom, celá obrazovka ===== */
.model-vyber{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);padding:12px 16px;margin-bottom:12px;display:grid;gap:10px}
.mv-riadok{display:grid;grid-template-columns:130px minmax(0,1fr);gap:6px 12px;align-items:start}.mv-p{font-weight:600;font-size:14px;line-height:20px;padding-top:10px}
.mv-riadok .pomoc{margin-top:4px}.mv-riadok .farby{min-height:44px}
.tvary-riadok,.chipy{display:flex;flex-wrap:wrap;gap:6px}
.tvar{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:4px 12px 4px 8px;border:1px solid var(--border);border-radius:999px;background:var(--surface);cursor:pointer;font-weight:600;font-size:14px;color:var(--text)}
.tvar svg{width:40px;height:24px;color:var(--ctrl)}.tvar:hover{border-color:var(--ctrl)}
.tvar.vybrane{border-color:var(--primary);background:var(--selected);color:var(--primary);box-shadow:inset 0 0 0 1px var(--primary)}.tvar.vybrane svg{color:var(--primary)}
.chip{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:4px 12px 4px 6px;border:1px solid var(--border);border-radius:999px;background:var(--surface);cursor:pointer;font-size:14px;text-align:left;color:var(--text)}
.chip:hover{border-color:var(--ctrl)}.chip.vybrane{border-color:var(--primary);background:var(--selected);font-weight:600;color:var(--primary);box-shadow:inset 0 0 0 1px var(--primary)}
.chip-vz{width:28px;height:28px;border-radius:50%;background:var(--f);position:relative;overflow:hidden;border:1px solid rgba(0,0,0,.18);flex:none}.chip-vz::after{content:"";position:absolute;inset:0}
.chip em{font-style:normal;color:var(--warn)}
.nast-cela svg{width:18px;height:18px;display:block}
.model-obal:fullscreen,.model-obal.cela{background:var(--canvas);padding:12px 16px;overflow:auto;display:grid;grid-template-columns:minmax(0,1fr) 380px;grid-template-rows:auto minmax(0,1fr) auto auto;gap:8px 16px;height:100vh;width:100vw;box-sizing:border-box}
.model-obal.cela{position:fixed;inset:0;z-index:100}
.model-obal:fullscreen .model-plocha,.model-obal.cela .model-plocha{aspect-ratio:auto;height:auto;min-height:0;grid-column:1;grid-row:2}
.model-obal:fullscreen .model-hlava,.model-obal.cela .model-hlava{grid-column:1;grid-row:1}
.model-obal:fullscreen .model-rezimy,.model-obal.cela .model-rezimy{grid-column:1;grid-row:3;margin:0}
.model-obal:fullscreen .vrstvy-panel,.model-obal.cela .vrstvy-panel{grid-column:1;grid-row:4;margin:0}
.model-obal:fullscreen .model-vyber,.model-obal.cela .model-vyber{grid-column:2;grid-row:1/-1;margin:0;overflow:auto;align-self:stretch}
.model-obal:fullscreen .mv-riadok,.model-obal.cela .mv-riadok{grid-template-columns:minmax(0,1fr)}.model-obal:fullscreen .mv-p,.model-obal.cela .mv-p{padding-top:0}
@media (max-width:899px){
  .model-obal:fullscreen,.model-obal.cela{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(220px,45vh) auto auto auto;padding:8px 12px}
  .model-obal:fullscreen .model-vyber,.model-obal.cela .model-vyber{grid-column:1;grid-row:5;overflow:visible}
  /* na mobile sú nástroje modelu statické a brali by výšku plátna — v celej obrazovke idú späť ako prekryv */
  .model-obal:fullscreen .model-plocha,.model-obal.cela .model-plocha{height:45vh;min-height:240px}
  .model-obal:fullscreen .model-nastroje,.model-obal.cela .model-nastroje{position:absolute;margin:0;pointer-events:none}
}
@media (max-width:767px){.mv-riadok{grid-template-columns:minmax(0,1fr)}.mv-p{padding-top:0}}

.pole-vypnute{opacity:.6}.pole-vypnute .vstup{background:var(--canvas)}.nast-cela.aktivny{background:var(--selected);color:var(--primary)}

/* ===== stránka /porovnanie-krytin/ ===== */
.pk-stranka .uvod{max-width:900px}
.pk-nastavenia{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);padding:16px;margin-bottom:16px;display:grid;gap:8px}
.pk-polia{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:0 16px}.pk-polia .pole{margin:8px 0}
.pk-suhrn{font-size:15px;line-height:22px;margin:0 0 12px}
.pk-stranka .porovnanie-krytin{margin-bottom:24px}
.pk-prehlad{max-width:900px;margin-bottom:24px}.pk-zoznam{padding-left:20px;margin:8px 0}.pk-zoznam li{margin:4px 0;font-size:15px;line-height:22px}
.pk-cta{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);padding:20px 24px;margin:0 0 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.pk-cta h2{font-size:22px;line-height:28px;margin:0 0 6px}.pk-cta p{margin:0;color:var(--muted);font-size:15px;line-height:22px;max-width:820px}
.pk-cta .btn{white-space:nowrap}
@media (max-width:767px){.pk-polia{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}