/* ZET Consulting s.r.o. — one page web
   Bez frameworků, bez závislostí. Čistý CSS. */

:root {
  --bg:        #ffffff;
  --bg-alt:    #f6f7f9;
  --bg-deep:   #0e1a2b;
  --ink:       #0e1a2b;
  --ink-soft:  #4a5768;
  --ink-mute:  #7b8798;
  --line:      #e3e7ed;
  --accent:    #1a56db;
  --accent-dk: #123fa6;
  --ok:        #0f7a4d;
  --radius:    10px;
  --maxw:      1080px;
  --font:      -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
               "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .6em; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.05rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }
p  { margin: 0 0 1em; }
a  { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-dk); }

/* ---------- Zvýrazněné placeholdery — PŘED spuštěním smazat ---------- */
/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; min-height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.02em; color: var(--ink); text-decoration: none; font-size: 1.05rem; }
.brand .mark {
  width: 30px; height: 30px; border-radius: 7px;
  background: var(--bg-deep); color: #fff;
  display: grid; place-items: center;
  font-size: .8rem; font-weight: 800; letter-spacing: .02em;
}
.nav { display: flex; gap: 22px; align-items: center; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: .93rem; font-weight: 500; }
.nav a:hover { color: var(--ink); }
@media (max-width: 860px) {
  html { scroll-padding-top: 108px; }
  .site-header .wrap { flex-wrap: wrap; min-height: 0; padding-top: 12px; padding-bottom: 10px; gap: 8px; }
  .site-header .btn { padding: 9px 13px; font-size: .82rem; }
  .brand { font-size: .95rem; gap: 8px; }
  .brand .mark { width: 27px; height: 27px; font-size: .72rem; }
  .nav {
    order: 3; width: 100%; gap: 18px;
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none; padding-bottom: 2px;
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { white-space: nowrap; }
}

/* ---------- Tlačítka ---------- */
.btn {
  display: inline-block; padding: 13px 24px; border-radius: var(--radius);
  font-weight: 600; font-size: .97rem; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; transition: .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dk); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink-mute); color: var(--ink); }

/* ---------- Sekce ---------- */
section { padding: 84px 0; }
section.alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.lede { font-size: 1.12rem; color: var(--ink-soft); max-width: 62ch; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .1em; font-size: .74rem;
  font-weight: 700; color: var(--accent); margin-bottom: .8em;
}

/* ---------- Hero ---------- */
.hero { padding: 96px 0 88px; }
.hero p.lede { font-size: 1.2rem; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.hero-note { margin-top: 22px; font-size: .89rem; color: var(--ink-mute); }

/* ---------- Grid karet ---------- */
.grid { display: grid; gap: 20px; margin-top: 44px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px;
}
.card h3 { margin-bottom: .45em; }
.card p { margin: 0; color: var(--ink-soft); font-size: .96rem; }

/* ---------- Ceník ---------- */
.pricing { display: grid; gap: 20px; margin-top: 44px;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.plan {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px; display: flex; flex-direction: column;
}
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.plan .tag {
  align-self: flex-start; font-size: .7rem; text-transform: uppercase;
  letter-spacing: .08em; font-weight: 700; color: var(--accent);
  background: #eaf0fd; padding: 4px 9px; border-radius: 999px; margin-bottom: 14px;
}
.plan .price { font-size: 2.1rem; font-weight: 700; letter-spacing: -.03em; margin: 6px 0 2px; }
.plan .price span { font-size: .95rem; font-weight: 500; color: var(--ink-mute); letter-spacing: 0; }
.plan .price-quote { font-size: 1.35rem; letter-spacing: -.01em; color: var(--ink-soft); }
.plan ul { list-style: none; padding: 0; margin: 20px 0 26px; flex: 1; }
.plan ul li { padding: 7px 0 7px 26px; position: relative; font-size: .95rem; color: var(--ink-soft); }
.plan ul li::before {
  content: ""; position: absolute; left: 4px; top: 15px;
  width: 11px; height: 6px; border-left: 2px solid var(--ok); border-bottom: 2px solid var(--ok);
  transform: rotate(-45deg);
}
.plan ul.plan-steps li { padding-left: 0; }
.plan ul.plan-steps li::before { content: none; }

.vat-note {
  margin-top: 26px; font-size: .9rem; color: var(--ink-soft);
  background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px;
}
section.alt .card, section.alt .plan, section.alt .vat-note { background: #fff; }

/* ---------- Kroky ---------- */
.steps { counter-reset: step; margin-top: 44px; display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.step { position: relative; padding-top: 46px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: 0; left: 0;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--bg-deep); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: .9rem;
}
.step h3 { font-size: 1.02rem; }
.step p { font-size: .93rem; color: var(--ink-soft); margin: 0; }

/* ---------- Platební metody ---------- */
.paylogos { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 26px; }
.paylogo {
  border: 1px solid var(--line); background: #fff; border-radius: 8px;
  padding: 9px 15px; font-size: .82rem; font-weight: 700; color: var(--ink-soft);
  letter-spacing: .02em;
}

/* ---------- Kontakt / firemní údaje ---------- */
.legal-table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: .95rem; }
.legal-table th, .legal-table td { text-align: left; padding: 11px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.legal-table th { font-weight: 600; color: var(--ink-mute); width: 42%; font-size: .9rem; }
.contact-grid { display: grid; gap: 40px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); margin-top: 40px; }

/* ---------- Právní texty ---------- */
.legal-doc { max-width: 76ch; }
.legal-doc h3 { margin-top: 2em; font-size: 1.08rem; }
.legal-doc h3:first-of-type { margin-top: 1.2em; }
.legal-doc ol, .legal-doc ul { padding-left: 1.3em; }
.legal-doc li { margin-bottom: .45em; font-size: .96rem; color: var(--ink-soft); }
.legal-doc p { font-size: .96rem; color: var(--ink-soft); }
.legal-doc > p:first-child { color: var(--ink); }
.doc-meta { font-size: .87rem; color: var(--ink-mute); margin-bottom: 2em; }

details.doc {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; margin-bottom: 14px; overflow: hidden;
}
details.doc > summary {
  cursor: pointer; padding: 20px 24px; font-weight: 600; font-size: 1.02rem;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
details.doc > summary::-webkit-details-marker { display: none; }
details.doc > summary::after {
  content: "+"; font-size: 1.4rem; font-weight: 400; color: var(--ink-mute); line-height: 1;
}
details.doc[open] > summary::after { content: "\2212"; }
details.doc[open] > summary { border-bottom: 1px solid var(--line); }
details.doc .doc-body { padding: 8px 24px 28px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-deep); color: #b9c4d4; padding: 56px 0 40px; font-size: .9rem;
}
.site-footer a { color: #dbe4f0; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.site-footer h4 { color: #fff; font-size: .82rem; text-transform: uppercase; letter-spacing: .09em; margin-bottom: 1em; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: .5em; }
.footer-bottom {
  margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: .85rem; color: #8e9cb0;
}

/* ---------- Skip link (přístupnost) ---------- */
.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 12px 18px; z-index: 100; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

@media (max-width: 640px) {
  section { padding: 60px 0; }
  .hero { padding: 64px 0 56px; }
  body { font-size: 16px; }
}