:root{
  --bg: #0b1220;
  --text: #0f172a;
  --muted: #64748b;
  --card: #ffffff;
  --soft: #f1f5f9;
  --accent: #2563eb;
  --accent2: #0ea5e9;
  --shadow: 0 12px 30px rgba(2, 6, 23, 0.12);
  --radius: 16px;
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height:1.5;
  color: var(--text);
  background: #ffffff;
}

a{ color: inherit; }
.container{
  max-width:1100px;
  margin:0 auto;
  padding: 0 16px;
}

/* NAV */
.site-header{
  background: #111827;
  color: white;
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav{
  position: relative;
  max-width:1100px;
  margin:0 auto;
  padding: 14px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.logo{
  color:white;
  text-decoration:none;
  font-weight:800;
  letter-spacing:.2px;
}

.nav-links{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  gap:12px;
  align-items:center;
}
.nav-links a{
  color:#e5e7eb;
  text-decoration:none;
  padding:8px 10px;
  border-radius: 10px;
  transition: background .2s ease, color .2s ease;
}
.nav-links a:hover{
  background: rgba(255,255,255,.12);
  color:white;
}

/* burger */
.nav-toggle{ display:none; }
.burger{
  display:none;
  width:40px;
  height:36px;
  border-radius: 12px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  gap:6px;
  flex-direction:column;
}
.burger span{
  width:22px;
  height:2px;
  background:#e5e7eb;
  display:block;
}

/* BUTTONS */
.btn{
  display:inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: white;
  text-decoration:none;
  border:0;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  box-shadow: 0 10px 18px rgba(37,99,235,.22);
}
.btn:hover{ filter: brightness(1.03); }
.btn-small{ padding: 8px 12px; border-radius: 10px; }
.btn-ghost{
  background: transparent;
  color: #111827;
  border: 1px solid #cbd5e1;
  box-shadow:none;
}

/* SECTIONS */
.section{ padding: 56px 0; }
.section-muted{ background: var(--soft); }
h1{ font-size: clamp(28px, 4vw, 44px); line-height:1.12; margin:0 0 12px; }
h2{ font-size: 28px; margin:0 0 12px; }
h3{ margin:0 0 8px; }
.lead{ color: var(--muted); margin: 0 0 18px; max-width: 60ch; }
.note{ color: var(--muted); font-size: 14px; margin-top: 10px; }
.small{ color: #cbd5e1; font-size: 13px; }

/* HERO */
.hero{
  padding: 56px 0;
  background:
    radial-gradient(900px 300px at 20% 0%, rgba(37,99,235,.16), transparent 60%),
    radial-gradient(700px 250px at 85% 20%, rgba(14,165,233,.14), transparent 60%),
    #ffffff;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 22px;
  align-items:start;
}
.hero-actions{ display:flex; gap:10px; flex-wrap: wrap; margin: 16px 0 14px; }
.bullets{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.hero-card{
  background: var(--card);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.hero-card a{ color: var(--accent); }

/* CARDS */
.cards{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.card{
  background: var(--card);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 8px 18px rgba(2,6,23,.06);
}
.card p{ margin: 0; color: var(--muted); }

/* GALLERY */
/* Galerie - responsivní grid */
.gallery{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 14px;
}

/* Karta fotky */
.shot{
  display: block;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #e2e8f0;
  box-shadow: 0 8px 18px rgba(2,6,23,.06);
  background: #fff;
  transform: translateY(0);
  transition: transform .2s ease, box-shadow .2s ease;
}

.shot:hover{
  transform: translateY(-3px);
  box-shadow: 0 14px 26px rgba(2,6,23,.12);
}

.shot img{
  width: 100%;
  height: 220px;      /* ZVĚTŠENO (původně 170px) */
  object-fit: cover;
  display: block;
}

/* Lightbox (CSS-only přes :target) */
.lightbox{
  position: fixed;
  inset: 0;
  display: none;
  z-index: 999;
}

.lightbox:target{
  display: block;
}

.lb-bg{
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.75);
}

.lb-content{
  position: relative;
  height: 100%;
  display: grid;
  place-items: center;
  padding: 18px;
}

.lb-content img{
  max-width: min(1100px, 92vw);
  max-height: 86vh;
  border-radius: 16px;
  box-shadow: 0 18px 50px rgba(0,0,0,.35);
  background: #fff;
}

.lb-close{
  position: absolute;
  top: 16px;
  right: 16px;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: rgba(255,255,255,.14);
  color: #fff;
  text-decoration: none;
  font-size: 28px;
  line-height: 42px;
  text-align: center;
  border: 1px solid rgba(255,255,255,.25);
}

.lb-close:hover{
  background: rgba(255,255,255,.22);
}

.ph{
  height: 250px;
  border-radius: 16px;
  overflow: hidden;          /* důležité */
  border: 1px solid #e2e8f0;
  background: rgba(148,163,184,.10);
}

.ph img{
  width: 100%;
  height: 100%;
  object-fit: cover;         /* pěkné oříznutí */
  display: block;
}


/* STEPS */
.steps{
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.steps li{ margin: 10px 0; }

/* CONTACT */
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items:start;
}
.contact-box{
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: 0 8px 18px rgba(2,6,23,.06);
}
.form{
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: 0 8px 18px rgba(2,6,23,.06);
}
label{ display:block; font-weight: 700; margin: 10px 0 6px; }
input, textarea{
  width:100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #cbd5e1;
  font: inherit;
}
input:focus, textarea:focus{
  outline: 3px solid rgba(37,99,235,.18);
  border-color: rgba(37,99,235,.55);
}

/* FOOTER */
.footer{
  background:#0b1220;
  color:#e5e7eb;
  padding: 18px 0;
}
.footer-row{
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 12px;
}

/* RESPONSIVE */
@media (max-width: 900px){
  .cards{ grid-template-columns: repeat(2, 1fr); }
  .hero-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .gallery{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px){
  .burger{ display:flex; }

  .nav-links{
    display:none;
    position:absolute;
    top: 62px;
    left: 0;
    right: 0;
    background: #111827;
    padding: 10px 16px 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  .nav-links a{ width: 100%; }
  .nav-toggle:checked ~ .nav-links{ display:flex; }

  .gallery{ grid-template-columns: 1fr; }
  .footer-row{ flex-direction: column; align-items: flex-start; }
}