:root {
  --bg: #08090c;
  --surface: #11131a;
  --line: #1f232e;
  --text: #e8eaf0;
  --muted: #8b91a1;
  --accent: #7c5cff;
  --accent2: #22d3ee;
}
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px clamp(20px, 5vw, 56px);
  backdrop-filter: blur(12px);
  background: linear-gradient(var(--bg), transparent);
}
.logo { display: block; line-height: 0; }
.logo img { height: 50px; width: auto; }
@media (max-width: 640px) { .logo img { height: 34px; } }
.nav nav { display: flex; gap: 28px; align-items: center; font-size: .9rem; color: var(--muted); }
.nav nav a:hover { color: var(--text); }
@media (max-width: 640px) { .nav nav a:not(.btn) { display: none; } }

.btn {
  display: inline-block; padding: 14px 28px; border-radius: 999px;
  background: var(--text); color: var(--bg); font-weight: 600; font-size: .95rem;
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(124, 92, 255, .35); }
.btn-small { padding: 8px 18px; font-size: .85rem; color: var(--bg) !important; }

.hero {
  position: relative; min-height: 82vh;
  display: flex; align-items: center;
  padding: 0 clamp(20px, 5vw, 56px);
  overflow: hidden;
}
#scene { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-text { position: relative; max-width: 640px; pointer-events: none; }
.hero-text .btn { pointer-events: auto; }
.eyebrow { color: var(--accent2); text-transform: uppercase; letter-spacing: .2em; font-size: .75rem; margin-bottom: 16px; }
h1 { font-size: clamp(2.6rem, 7vw, 5.5rem); line-height: 1.02; letter-spacing: -.03em; margin-bottom: 24px; }
.lead { color: var(--muted); font-size: 1.15rem; max-width: 460px; margin-bottom: 36px; }

.section { padding: clamp(48px, 6vw, 80px) clamp(20px, 5vw, 56px); max-width: 1200px; margin: 0 auto; }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); letter-spacing: -.02em; margin-bottom: 32px; line-height: 1.1; }

.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 32px;
  transition: border-color .3s, transform .3s;
}
.card:hover { border-color: var(--accent); transform: translateY(-4px); }
.num { color: var(--accent); font-size: .8rem; letter-spacing: .15em; }
.card h3 { margin: 24px 0 8px; font-size: 1.25rem; }
.card p { color: var(--muted); }

.split { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.split h2 { margin-bottom: 20px; }
.split p { color: var(--muted); }
.list { margin-top: 20px; padding: 0; list-style: none; }
.list li { padding: 14px 0; border-top: 1px solid var(--line); }
.list li:last-child { border-bottom: 1px solid var(--line); }
.visual { color: var(--accent2); display: grid; place-items: center; }
.visual svg { width: min(100%, 320px); filter: drop-shadow(0 0 20px rgba(34, 211, 238, .4)); }

#galerie { scroll-margin-top: 100px; }
.carousel {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.track {
  display: flex; gap: 16px; width: max-content;
  animation: scroll 60s linear infinite;
}
.carousel:hover .track { animation-play-state: paused; }
@keyframes scroll { to { transform: translateX(calc(-50% - 8px)); } }
@media (prefers-reduced-motion: reduce) { .track { animation-duration: 240s; } }
.ph {
  position: relative; flex: none;
  width: clamp(260px, 32vw, 440px); aspect-ratio: 4 / 3;
  border-radius: 16px; overflow: hidden;
  background: linear-gradient(135deg, #1a1d29, #0e1017);
  border: 1px solid var(--line); display: grid; place-items: center;
  color: var(--muted); font-size: .85rem;
}
.ph::before {
  content: ""; position: absolute; inset: 0; opacity: .25;
  background: radial-gradient(circle at 30% 20%, var(--accent), transparent 60%);
}
.ph:nth-child(even)::before { background: radial-gradient(circle at 70% 80%, var(--accent2), transparent 60%); }
.ph img, .ph video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

.contact { text-align: center; }
.contact p { color: var(--muted); margin: -12px auto 28px; max-width: 460px; }

footer {
  display: flex; justify-content: space-between;
  padding: 32px clamp(20px, 5vw, 56px); border-top: 1px solid var(--line);
  color: var(--muted); font-size: .85rem;
}

/* telefon: bez 3D modelu, menší mezery */
@media (max-width: 1000px) {
  #scene { display: none; }
  .hero {
    min-height: 0;
    padding-top: 120px; padding-bottom: 40px;
    background:
      linear-gradient(transparent 60%, var(--bg)),
      radial-gradient(circle at 85% 10%, rgba(124, 92, 255, .25), transparent 55%),
      radial-gradient(circle at 0% 90%, rgba(34, 211, 238, .12), transparent 50%);
  }
  .lead { font-size: 1.05rem; margin-bottom: 28px; }
  .section { padding-top: 40px; padding-bottom: 40px; }
  h2 { margin-bottom: 24px; }
  .grid3 { gap: 12px; }
  .card { padding: 24px; }
  .card h3 { margin-top: 16px; }
  .split { grid-template-columns: 1fr; gap: 0; }
  .visual { display: none; }
  .ph { width: 72vw; }
  .carousel {
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  }
  footer { padding: 24px 20px; }
}