/* ==========================================================
   Jan Václavík – IT servis | www.vaclavik.it
   Mobile-first, bez knihoven, systémové písmo (rychlé načtení)
   ========================================================== */

:root {
  --navy: #0f1c2e;
  --navy-2: #16273f;
  --anthracite: #1f2933;
  --text: #1f2933;
  --muted: #5b6776;
  --line: #e2e7ee;
  --bg: #ffffff;
  --bg-soft: #f4f6f9;
  --accent: #f28c28;
  --accent-dark: #d9731a;
  --on-dark: #e8edf4;
  --on-dark-muted: #a9b6c7;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(15, 28, 46, .08);
  --header-h: 64px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 56px; /* místo pro mobilní lištu Zavolat */
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-dark); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 16px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #111; padding: 8px 14px; z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- Tlačítka ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 12px 22px;
  border-radius: 8px; border: 2px solid transparent;
  font-weight: 600; font-size: 1rem; text-decoration: none;
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #111; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-outline { border-color: rgba(255, 255, 255, .5); color: #fff; }
.btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--navy);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.header-inner {
  display: flex; align-items: center; gap: 12px;
  height: var(--header-h);
}
.logo {
  display: flex; align-items: center; gap: 10px;
  color: #fff; text-decoration: none; margin-right: auto;
}
.logo-mark { width: 32px; height: 32px; color: var(--accent); flex: none; }
.logo-text { font-weight: 700; font-size: 1.05rem; line-height: 1.1; }
.logo-text small { display: block; font-weight: 500; font-size: .75rem; color: var(--on-dark-muted); letter-spacing: .08em; text-transform: uppercase; }

.header-phone {
  display: inline-flex; align-items: center; gap: 6px;
  color: #fff; text-decoration: none; font-weight: 700;
  padding: 8px 10px; border-radius: 8px;
  background: rgba(242, 140, 40, .15);
}
.header-phone svg { width: 18px; height: 18px; color: var(--accent); }
.header-phone span { display: none; }
.header-phone:hover { background: rgba(242, 140, 40, .28); }

.nav-toggle {
  width: 44px; height: 44px; padding: 10px;
  background: none; border: 0; cursor: pointer;
  display: flex; flex-direction: column; justify-content: space-between;
}
.nav-toggle span { display: block; height: 3px; border-radius: 2px; background: #fff; transition: transform .2s, opacity .2s; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(9.5px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-9.5px) rotate(-45deg); }

.main-nav {
  position: absolute; top: var(--header-h); left: 0; right: 0;
  background: var(--navy-2);
  display: none;
  box-shadow: 0 10px 20px rgba(0, 0, 0, .25);
}
.nav-open .main-nav { display: block; }
.main-nav ul { list-style: none; margin: 0; padding: 8px 16px 16px; }
.main-nav a {
  display: block; padding: 12px 4px;
  color: #fff; text-decoration: none; font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.main-nav a:hover { color: var(--accent); }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(circle at 85% 20%, rgba(242, 140, 40, .18), transparent 45%),
    linear-gradient(160deg, var(--navy) 0%, var(--anthracite) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::after { /* jemná technická mřížka */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, #000 30%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, #000 30%, transparent);
}
.hero-inner { position: relative; z-index: 1; padding-top: 56px; padding-bottom: 64px; }
.eyebrow {
  color: var(--accent); font-weight: 700; font-size: .8rem;
  letter-spacing: .12em; text-transform: uppercase;
}
.hero h1 { font-size: clamp(2rem, 7vw, 3.4rem); max-width: 16ch; letter-spacing: -.01em; }
.lead { font-size: 1.1rem; color: var(--on-dark); max-width: 60ch; }
.hero-cta { display: flex; flex-direction: column; gap: 12px; margin: 28px 0 0; }
.hero-facts {
  list-style: none; padding: 0; margin: 40px 0 0;
  display: grid; gap: 10px;
  color: var(--on-dark-muted); font-size: .95rem;
}
.hero-facts li { padding-left: 14px; border-left: 3px solid var(--accent); }
.hero-facts strong { color: #fff; }

/* ---------- Sekce ---------- */
.section { padding: 64px 0; }
.section h2 { font-size: clamp(1.6rem, 5vw, 2.3rem); color: var(--navy); }
.section h2::after {
  content: ""; display: block; width: 48px; height: 4px;
  background: var(--accent); border-radius: 2px; margin-top: 14px;
}
.section-intro { color: var(--muted); max-width: 62ch; font-size: 1.05rem; margin-bottom: 32px; }

/* Služby – karty */
.cards { display: grid; gap: 16px; }
.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card-icon {
  width: 48px; height: 48px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--navy); color: var(--accent);
  margin-bottom: 16px;
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.15rem; color: var(--navy); }
.card p { color: var(--muted); margin: 0; }

/* Proč já */
.section-dark { background: var(--navy); color: var(--on-dark); }
.section-dark h2 { color: #fff; }
.section-dark .section-intro { color: var(--on-dark-muted); }
.reasons { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.reasons li {
  display: flex; gap: 16px;
  padding: 22px; border-radius: var(--radius);
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .08);
}
.reason-num { font-size: 1.6rem; font-weight: 800; color: var(--accent); line-height: 1; min-width: 2ch; }
.reasons h3 { color: #fff; font-size: 1.15rem; }
.reasons p { margin: 0; color: var(--on-dark-muted); }

/* Galerie */
.gallery { display: grid; gap: 16px; }
.gallery figure {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  background: var(--bg-soft); border: 1px solid var(--line);
}
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.gallery figcaption { padding: 12px 16px; font-weight: 600; color: var(--navy); font-size: .95rem; }

/* Kontakt */
.section-contact { background: var(--bg-soft); }
.contact-grid { display: grid; gap: 32px; align-items: start; }
.contact-cta .btn-outline { border-color: var(--navy); color: var(--navy); }
.contact-cta .btn-outline:hover { background: var(--navy); color: #fff; }
.contact-cta p { color: var(--muted); max-width: 52ch; }
.contact-card {
  font-style: normal;
  background: var(--navy); color: var(--on-dark);
  border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--accent);
}
.contact-name { font-size: 1.2rem; color: #fff; margin-bottom: 16px; }
.contact-card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 10px 16px; }
.contact-card dt { color: var(--on-dark-muted); font-size: .9rem; padding-top: 2px; }
.contact-card dd { margin: 0; color: #fff; font-weight: 600; }
.contact-card a { color: var(--accent); text-decoration: none; }
.contact-card a:hover { text-decoration: underline; }
.contact-note { margin: 18px 0 0; font-size: .8rem; color: var(--on-dark-muted); }

/* Patička */
.site-footer { background: var(--anthracite); color: var(--on-dark-muted); font-size: .9rem; }
.footer-inner { padding-top: 20px; padding-bottom: 20px; display: grid; gap: 4px; }
.footer-inner p { margin: 0; }
.site-footer a { color: var(--on-dark); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

/* Mobilní lišta Zavolat */
.mobile-call {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  height: 56px; display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: #111; font-weight: 700; text-decoration: none;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, .15);
}

/* ---------- Tablet ---------- */
@media (min-width: 600px) {
  .header-phone span { display: inline; }
  .hero-cta { flex-direction: row; flex-wrap: wrap; }
  .hero-facts { grid-template-columns: repeat(3, 1fr); }
  .cards, .reasons, .gallery { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Desktop ---------- */
@media (min-width: 960px) {
  :root { --header-h: 76px; }
  body { padding-bottom: 0; }
  .mobile-call, .nav-toggle { display: none; }

  .main-nav { position: static; display: block; background: none; box-shadow: none; }
  .main-nav ul { display: flex; gap: 4px; padding: 0; }
  .main-nav a { border: 0; padding: 8px 14px; border-radius: 6px; }
  .main-nav a:hover { background: rgba(255, 255, 255, .06); }
  .header-phone { margin-left: 12px; padding: 10px 16px; }

  .hero-inner { padding-top: 110px; padding-bottom: 120px; }
  .section { padding: 96px 0; }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1.1fr 1fr; gap: 56px; }
  .footer-inner { grid-template-columns: 1fr auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}