/*
 * Drevostavebnik.sk — marketingová/informačná stránka (www/).
 * Dizajnový systém nadväzuje na appku (public/studio-assets/studio.css): rovnaká teplá
 * drevená paleta, žiadne umelé farebné gradienty ani "SaaS" bubliny, technický/kótovací
 * vizuálny motív. Táto stránka je oproti appke typograficky bohatšia (Fraunces + Inter),
 * lebo jej úlohou je predať a vysvetliť, nie len zobrazovať dáta. Pozri PLAN_WWW.md kap. 4.
 */

:root {
    --farba-text: #2a2620;
    --farba-text-tlmena: #6b6252;
    --farba-text-jemna: #8a8272;
    --farba-pozadie: #faf7f2;
    --farba-pozadie-karta: #ffffff;
    --farba-pozadie-tlmena: #f4f0e8;
    --farba-ramecek: #ddd4c4;
    --farba-akcent: #7a5c3e;
    --farba-akcent-tmava: #5c4632;
    --farba-tmava: #2a2620;
    --farba-tmava2: #3a3226;
    --farba-terakota: #b5451b;
    --farba-varovanie-bg: #fff4e0;
    --farba-varovanie-border: #d99a1b;
    --farba-chyba-bg: #fdecec;
    --farba-chyba-border: #c0392b;
    --farba-ok-bg: #eef7ee;
    --farba-ok-border: #3f8f4f;

    --font-nadpis: "Fraunces", Georgia, "Times New Roman", serif;
    --font-text: "Inter", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

    --polomer: 10px;
    --polomer-mala: 6px;
    --tien-karta: 0 1px 2px rgba(42, 38, 32, 0.04);
    --sirka-obsah: 1180px;
    --sirka-textova: 760px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-text);
    background: var(--farba-pozadie);
    color: var(--farba-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-nadpis);
    font-weight: 600;
    line-height: 1.2;
    margin: 0 0 0.6em;
    color: var(--farba-tmava);
    letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.1rem, 4.2vw, 3.2rem); font-weight: 500; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
a { color: var(--farba-akcent-tmava); }
strong { color: var(--farba-tmava); }
ul, ol { padding-left: 1.3em; }
li { margin-bottom: 0.4em; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- layout ---------- */
.obsah {
    max-width: var(--sirka-obsah);
    margin: 0 auto;
    padding: 0 1.5rem;
}
.obsah--uzky { max-width: var(--sirka-textova); }
section { padding: 4.2rem 0; }
section.tesna { padding: 2.6rem 0; }
.uvod-sekcie { max-width: var(--sirka-textova); margin: 0 0 2.4rem; }
.uvod-sekcie--stred { margin-left: auto; margin-right: auto; text-align: center; }
.odznak-sekcie {
    display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--farba-akcent-tmava); margin-bottom: 0.7rem;
}

/* ---------- hlavička / nav ---------- */
.hlavicka {
    position: sticky; top: 0; z-index: 40;
    background: rgba(250, 247, 242, 0.92);
    backdrop-filter: saturate(160%) blur(6px);
    border-bottom: 1px solid var(--farba-ramecek);
}
.hlavicka-riadok { display: flex; align-items: center; gap: 1.5rem; padding: 0.85rem 0; }
.znacka { display: flex; align-items: center; gap: 0.55rem; text-decoration: none; color: var(--farba-tmava); font-family: var(--font-nadpis); font-weight: 600; font-size: 1.18rem; white-space: nowrap; }
.znacka-ikona { flex: 0 0 auto; display: block; }
.nav-hlavna { display: flex; align-items: center; gap: 0.35rem; margin-left: auto; flex-wrap: wrap; }
.nav-hlavna a {
    text-decoration: none; color: var(--farba-text-tlmena); font-size: 0.92rem; font-weight: 600;
    padding: 0.5rem 0.7rem; border-radius: var(--polomer-mala);
}
.nav-hlavna a:hover { color: var(--farba-tmava); background: var(--farba-pozadie-tlmena); }
.nav-hlavna a.aktivna { color: var(--farba-tmava); }
.nav-cta {
    margin-left: 0.4rem; background: var(--farba-akcent) !important; color: #fff !important;
    padding: 0.55rem 1.05rem !important;
}
.nav-cta:hover { background: var(--farba-akcent-tmava) !important; }
.hamburger { display: none; }

@media (max-width: 900px) {
    .hamburger {
        display: inline-flex; margin-left: auto; border: 1px solid var(--farba-ramecek);
        background: #fff; border-radius: var(--polomer-mala); width: 2.4rem; height: 2.4rem;
        align-items: center; justify-content: center; cursor: pointer;
    }
    .nav-hlavna {
        display: none; position: absolute; left: 0; right: 0; top: 100%;
        background: var(--farba-pozadie); border-bottom: 1px solid var(--farba-ramecek);
        flex-direction: column; align-items: stretch; padding: 0.5rem 1.2rem 1rem; gap: 0.15rem;
    }
    .nav-hlavna.otvorene { display: flex; }
    .nav-hlavna a { padding: 0.65rem 0.5rem; }
    .nav-cta { margin: 0.4rem 0 0; text-align: center; }
}

/* ---------- tlačidlá ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    font-family: var(--font-text); font-weight: 700; font-size: 0.95rem; text-decoration: none;
    padding: 0.75rem 1.4rem; border-radius: var(--polomer-mala); border: 1px solid transparent;
    cursor: pointer; transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn-primarny { background: var(--farba-akcent); color: #fff; }
.btn-primarny:hover { background: var(--farba-akcent-tmava); }
.btn-sekundarny { background: transparent; color: var(--farba-tmava); border-color: var(--farba-tmava); }
.btn-sekundarny:hover { background: var(--farba-tmava); color: #fff; }
.btn-na-tmavom { background: #fff; color: var(--farba-tmava); }
.btn-na-tmavom:hover { background: var(--farba-varovanie-bg); }
.btn-velke { padding: 0.9rem 1.7rem; font-size: 1rem; }
.btn-blok { width: 100%; }

/* ---------- hero ---------- */
.hero {
    padding: 4rem 0 3.5rem; position: relative; overflow: hidden;
    border-bottom: 1px solid var(--farba-ramecek);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3rem; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero p.uvod { font-size: 1.15rem; color: var(--farba-text-tlmena); max-width: 46ch; }
.hero-cta { display: flex; gap: 0.8rem; flex-wrap: wrap; margin: 1.6rem 0 1.4rem; }
.hero-fakty { display: flex; gap: 1.6rem; flex-wrap: wrap; margin-top: 1.6rem; }
.hero-fakt { font-size: 0.82rem; color: var(--farba-text-tlmena); }
.hero-fakt strong { display: block; font-family: var(--font-nadpis); font-size: 1.5rem; color: var(--farba-tmava); font-weight: 600; }

/* dekoratívna kótovaná ilustrácia pôdorysu v hero sekcii */
.hero-ilustracia { position: relative; }
.hero-ilustracia svg { width: 100%; height: auto; display: block; }

/* ---------- pás dôvery / ikonové boxy ---------- */
.mriezka-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.mriezka-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.3rem; }
.mriezka-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
@media (max-width: 900px) { .mriezka-3, .mriezka-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .mriezka-3, .mriezka-2, .mriezka-4 { grid-template-columns: 1fr; } }

.karta {
    background: var(--farba-pozadie-karta); border: 1px solid var(--farba-ramecek);
    border-radius: var(--polomer); padding: 1.5rem 1.5rem; box-shadow: var(--tien-karta);
}
.karta h3 { margin-bottom: 0.5rem; }
.karta p { color: var(--farba-text-tlmena); font-size: 0.94rem; }
.karta-ikona {
    width: 2.6rem; height: 2.6rem; border-radius: 8px; background: var(--farba-pozadie-tlmena);
    display: flex; align-items: center; justify-content: center; margin-bottom: 0.9rem; color: var(--farba-akcent-tmava);
}

/* ---------- kroky ---------- */
.kroky { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; counter-reset: krok; }
@media (max-width: 800px) { .kroky { grid-template-columns: 1fr; } }
.krok { position: relative; padding-left: 3.4rem; }
.krok-cislo {
    position: absolute; left: 0; top: 0; width: 2.4rem; height: 2.4rem; border-radius: 50%;
    background: var(--farba-tmava2); color: #f5efe4; display: flex; align-items: center;
    justify-content: center; font-family: var(--font-nadpis); font-weight: 600; font-size: 1.05rem;
}
.krok h3 { margin-bottom: 0.35rem; }
.krok p { color: var(--farba-text-tlmena); font-size: 0.94rem; }

/* ---------- sekcia tmavá ---------- */
.sekcia-tmava { background: var(--farba-tmava); color: #efe9dc; }
.sekcia-tmava h2, .sekcia-tmava h3 { color: #fff; }
.sekcia-tmava p { color: #cfc6b4; }
.sekcia-tmava .odznak-sekcie { color: #e0b487; }

/* ---------- balíky / cenník ---------- */
.balik-karta {
    background: #fff; border: 1px solid var(--farba-ramecek); border-radius: var(--polomer);
    padding: 1.7rem 1.6rem; display: flex; flex-direction: column; gap: 0.7rem; position: relative;
}
.balik-karta--zvyraznena { border-color: var(--farba-akcent); box-shadow: 0 0 0 1px var(--farba-akcent); }
.balik-odznak {
    position: absolute; top: -0.7rem; right: 1.2rem; background: var(--farba-akcent); color: #fff;
    font-size: 0.72rem; font-weight: 700; padding: 0.25rem 0.65rem; border-radius: 999px;
    text-transform: uppercase; letter-spacing: 0.04em;
}
.balik-nazov { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--farba-text-jemna); font-weight: 700; }
.balik-cena { font-family: var(--font-nadpis); font-size: 2.1rem; font-weight: 600; color: var(--farba-tmava); }
.balik-cena small { font-family: var(--font-text); font-size: 0.95rem; font-weight: 600; color: var(--farba-text-jemna); }
.balik-popis { color: var(--farba-text-tlmena); font-size: 0.92rem; }
.balik-zoznam { list-style: none; padding: 0; margin: 0.4rem 0 0.8rem; display: flex; flex-direction: column; gap: 0.5rem; }
.balik-zoznam li { display: flex; gap: 0.55rem; align-items: flex-start; font-size: 0.88rem; color: var(--farba-text); margin: 0; }
.balik-zoznam li.nie { color: var(--farba-text-jemna); }
.znak-ano, .znak-nie { flex: 0 0 auto; width: 1.1rem; height: 1.1rem; margin-top: 0.15rem; }
.znak-ano { color: var(--farba-ok-border); }
.znak-nie { color: var(--farba-text-jemna); }

/* ---------- porovnávacia tabuľka ---------- */
.tabulka-porovnanie { width: 100%; border-collapse: collapse; font-size: 0.9rem; background: #fff; border: 1px solid var(--farba-ramecek); border-radius: var(--polomer); overflow: hidden; }
.tabulka-porovnanie th, .tabulka-porovnanie td { padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--farba-ramecek); text-align: left; }
.tabulka-porovnanie th { background: var(--farba-pozadie-tlmena); font-family: var(--font-nadpis); font-weight: 600; color: var(--farba-tmava); }
.tabulka-porovnanie td.stred, .tabulka-porovnanie th.stred { text-align: center; }
.tabulka-porovnanie tr:last-child td { border-bottom: none; }
.tabulka-porovnanie .cena-bunka { font-weight: 700; font-variant-numeric: tabular-nums; }
.wrap-tabulka { overflow-x: auto; }

/* ---------- legislatívna tabuľka ---------- */
.tabulka-zakon { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.tabulka-zakon th, .tabulka-zakon td { padding: 0.7rem 0.85rem; border: 1px solid var(--farba-ramecek); text-align: left; vertical-align: top; }
.tabulka-zakon th { background: var(--farba-pozadie-tlmena); font-weight: 700; }
.tabulka-zakon td.rezim { font-weight: 700; color: var(--farba-akcent-tmava); white-space: nowrap; }

/* ---------- odznaky/stitky ---------- */
.stitok { display: inline-block; padding: 0.2rem 0.65rem; border-radius: 999px; font-size: 0.76rem; font-weight: 700; }
.stitok.ok { background: var(--farba-ok-bg); color: var(--farba-ok-border); border: 1px solid var(--farba-ok-border); }
.stitok.info { background: var(--farba-pozadie-tlmena); color: var(--farba-text-tlmena); border: 1px solid var(--farba-ramecek); }
.stitok.varovanie { background: var(--farba-varovanie-bg); color: var(--farba-varovanie-border); border: 1px solid var(--farba-varovanie-border); }
.stitok.terakota { background: #fbe9e1; color: var(--farba-terakota); border: 1px solid var(--farba-terakota); }

/* ---------- banner/upozornenie ---------- */
.banner { border-radius: var(--polomer); padding: 1.1rem 1.3rem; border: 1px solid var(--farba-varovanie-border); background: var(--farba-varovanie-bg); font-size: 0.92rem; }
.banner strong { display: block; margin-bottom: 0.3rem; }
.banner.info { border-color: var(--farba-ramecek); background: var(--farba-pozadie-tlmena); }

/* ---------- FAQ (details/summary, bez JS) ---------- */
.faq-polozka { border-bottom: 1px solid var(--farba-ramecek); padding: 1rem 0; }
.faq-polozka:first-child { padding-top: 0; }
.faq-polozka summary {
    cursor: pointer; font-weight: 700; font-family: var(--font-nadpis); font-size: 1.02rem;
    color: var(--farba-tmava); list-style: none; display: flex; justify-content: space-between;
    align-items: center; gap: 1rem;
}
.faq-polozka summary::-webkit-details-marker { display: none; }
.faq-polozka summary::after { content: "+"; font-size: 1.3rem; color: var(--farba-akcent); flex: 0 0 auto; }
.faq-polozka[open] summary::after { content: "\2212"; }
.faq-polozka p { margin-top: 0.7rem; color: var(--farba-text-tlmena); }

/* ---------- karty projektov (hotové projekty) ---------- */
.projekt-karta { border: 1px solid var(--farba-ramecek); border-radius: var(--polomer); overflow: hidden; background: #fff; }
.projekt-nahlad {
    height: 140px; background: var(--farba-pozadie-tlmena); display: flex; align-items: center;
    justify-content: center; color: var(--farba-akcent-tmava); border-bottom: 1px solid var(--farba-ramecek);
}
.projekt-telo { padding: 1rem 1.1rem; }
.projekt-telo h3 { margin-bottom: 0.25rem; font-size: 1rem; }
.projekt-rozmer { font-size: 0.8rem; color: var(--farba-text-jemna); font-variant-numeric: tabular-nums; margin-bottom: 0.5rem; }

/* ---------- kontakt ---------- */
.kontakt-mriezka { display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem; align-items: start; }
@media (max-width: 800px) { .kontakt-mriezka { grid-template-columns: 1fr; } }
.kontakt-riadok { display: flex; gap: 0.8rem; align-items: flex-start; margin-bottom: 1.1rem; }
.kontakt-ikona { flex: 0 0 auto; width: 2.2rem; height: 2.2rem; border-radius: 6px; background: var(--farba-pozadie-tlmena); display: flex; align-items: center; justify-content: center; color: var(--farba-akcent-tmava); }
.formular label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--farba-text-tlmena); margin: 0.9rem 0 0.3rem; }
.formular label:first-child { margin-top: 0; }
.formular input, .formular textarea {
    width: 100%; padding: 0.65rem 0.75rem; border: 1px solid var(--farba-ramecek); border-radius: var(--polomer-mala);
    font-family: var(--font-text); font-size: 0.94rem; background: #fff; color: var(--farba-text);
}
.formular textarea { resize: vertical; min-height: 110px; }

/* ---------- päta ---------- */
.paticka { background: var(--farba-tmava); color: #b9ae9a; padding: 3rem 0 1.5rem; margin-top: 3rem; }
.paticka a { color: #d8cfba; text-decoration: none; }
.paticka a:hover { color: #fff; }
.paticka-mriezka { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
@media (max-width: 800px) { .paticka-mriezka { grid-template-columns: 1fr 1fr; } }
.paticka-znacka { font-family: var(--font-nadpis); color: #fff; font-size: 1.15rem; margin-bottom: 0.6rem; }
.paticka h4 { color: #efe9dc; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.8rem; }
.paticka ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.5rem; font-size: 0.88rem; }
.paticka-spodok { border-top: 1px solid #4a4234; padding-top: 1.3rem; font-size: 0.78rem; color: #9c937f; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.6rem; }
.paticka-disclaimer { font-size: 0.78rem; color: #9c937f; max-width: 70ch; margin-bottom: 1.2rem; }

/* ---------- pásik "pripravujeme" ---------- */
.pasik-pripravujeme { background: var(--farba-varovanie-bg); border-bottom: 1px solid var(--farba-varovanie-border); text-align: center; padding: 0.55rem 1rem; font-size: 0.85rem; color: #6b5514; font-weight: 600; }

/* ---------- rozdeľovač s kótovacím motívom ---------- */
.deliaca-kota { display: flex; align-items: center; gap: 0.6rem; color: var(--farba-text-jemna); margin: 3rem 0; }
.deliaca-kota::before, .deliaca-kota::after { content: ""; flex: 1; height: 1px; background: var(--farba-ramecek); }

@media (max-width: 640px) {
    section { padding: 2.8rem 0; }
    .hero { padding: 2.6rem 0 2.2rem; }
}