/* ------------------------------------------------------------
   STYLE – profesionální, velké nadpisy, pomalejší animace
   PHP 7.2 kompatibilní (CSS/JS bez závislostí)
------------------------------------------------------------ */

:root{
  --bg0:#070a14;
  --bg1:#0b1020;
  --ink:#eaf0ff;
  --muted:rgba(234,240,255,.72);
  --muted2:rgba(234,240,255,.55);

  --glass: rgba(10,16,34,.48);
  --glass2: rgba(10,16,34,.72);

  --accent1:#7c3aed;
  --accent2:#06b6d4;
  --accent3:#f59e0b;

  --ring: rgba(234,240,255,.18);
  --shadow: 0 18px 70px rgba(0,0,0,.55);

  --r16: 16px;
  --r22: 22px;

  --container: 1200px;
  --navH: 70px;

  --mega: clamp(2.6rem, 6.2vw, 6.8rem); /* obří, dle šířky */
  --stageTitle: clamp(3.0rem, 7.5vw, 8.6rem);
  --heroH1: clamp(2.8rem, 6.8vw, 6.8rem);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background: var(--bg0);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  line-height:1.25;
  overflow-x:hidden;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea{font:inherit;color:inherit}

.container{
  width:min(var(--container), calc(100% - 48px));
  margin:0 auto;
}

.hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}

/* ------------------------------------------------------------
   FIXED HERO BG VIDEO
------------------------------------------------------------ */
.hero-bg{
  position:fixed; inset:0;
  z-index:-3;
  background: #050711;
}
.bg-video{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit:cover;
  filter: saturate(1.08) contrast(1.06);
}
.bg-vignette{
  position:absolute; inset:0;
  background:
    radial-gradient(1200px 700px at 18% 20%, rgba(124,58,237,.28), transparent 60%),
    radial-gradient(900px 600px at 82% 36%, rgba(6,182,212,.20), transparent 62%),
    radial-gradient(900px 600px at 55% 88%, rgba(245,158,11,.14), transparent 60%),
    linear-gradient(180deg, rgba(4,6,12,.70), rgba(4,6,12,.30) 40%, rgba(4,6,12,.72));
}
.bg-grain{
  position:absolute; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.25'/%3E%3C/svg%3E");
  opacity:.07;
  mix-blend-mode:overlay;
  pointer-events:none;
}

/* ------------------------------------------------------------
   NAV – transparent on hero, background after scroll
------------------------------------------------------------ */
.nav-wrap{
  position:fixed;
  top:0; left:0; right:0;
  z-index:50;
}
.nav{
  height: var(--navH);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:min(var(--container), calc(100% - 24px));
  margin: 10px auto 0;
  padding: 12px 14px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid transparent;
  transition: background .35s ease, border-color .35s ease, backdrop-filter .35s ease, transform .2s ease;
}

.nav.scrolled{
  background: rgba(6,8,16,.52);
  border-color: rgba(234,240,255,.14);
  backdrop-filter: blur(12px);
}

.brand{display:flex;align-items:center;gap:10px}
.brand-dot{
  width:14px;height:14px;border-radius:50%;
  background: linear-gradient(135deg, var(--accent2), var(--accent1));
  box-shadow: 0 0 0 4px rgba(124,58,237,.18);
}
.brand-text{letter-spacing:.18em;font-weight:700;font-size:.92rem}

.nav-links{
  display:flex; gap:18px; align-items:center;
}
.nav-links a{
  font-size:.95rem;
  color: rgba(234,240,255,.78);
  transition: color .2s ease;
}
.nav-links a:hover{color: rgba(234,240,255,.98)}

.nav-cta{
  padding:10px 14px;
  border-radius:999px;
  background: linear-gradient(135deg, rgba(124,58,237,.92), rgba(6,182,212,.85));
  color:#061018 !important;
  font-weight:800;
}

.nav-burger{
  display:none;
  background:transparent;
  border:0;
  padding:10px;
  border-radius:12px;
  cursor:pointer;
}
.nav-burger span{
  display:block;
  width:22px;height:2px;
  background: rgba(234,240,255,.86);
  margin:5px 0;
  border-radius:3px;
}

/* ------------------------------------------------------------
   HERO SCREEN
------------------------------------------------------------ */
.hero-screen{
  min-height:100vh;
  padding-top: calc(var(--navH) + 60px);
  padding-bottom: 80px;
  display:flex;
  align-items:flex-end;
  position:relative;
}

.hero-inner{
  padding-bottom: 34px;
}

.hero-h1{
  margin:0;
  font-size: var(--heroH1);
  letter-spacing: .08em;
  text-transform: uppercase;
  line-height: .92;
  text-shadow: 0 18px 70px rgba(0,0,0,.55);
}
.hero-lead{
  margin: 18px 0 0;
  max-width: 820px;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
}

.hero-actions{
  margin-top: 22px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

.btn{
  border: 1px solid rgba(234,240,255,.18);
  background: rgba(10,16,34,.30);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 800;
  letter-spacing: .02em;
  cursor:pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{transform: translateY(-1px); border-color: rgba(234,240,255,.28)}
.btn-primary{
  background: linear-gradient(135deg, rgba(6,182,212,.92), rgba(124,58,237,.92));
  border-color: transparent;
  color:#051018;
}
.btn-ghost{
  background: rgba(10,16,34,.22);
}
.btn-wide{width:100%; text-align:center; padding: 14px 16px}

.hero-controls{
  position:absolute;
  top: 16px;
  right: 16px;
  display:flex;
  gap:10px;
  z-index:2;
}
.ctrl{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(234,240,255,.18);
  background: rgba(10,16,34,.35);
  backdrop-filter: blur(10px);
  cursor:pointer;
}
.ctrl-ic{font-size: 1.05rem}
.ctrl-txt{
  font-weight:900;
  letter-spacing:.10em;
  font-size:.82rem;
}

.hero-scroll-hint{
  position:absolute;
  left:50%;
  bottom: 18px;
  transform: translateX(-50%);
  width: 26px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(234,240,255,.24);
  background: rgba(10,16,34,.18);
  backdrop-filter: blur(10px);
}
.hero-scroll-hint span{
  position:absolute;
  left:50%;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius:50%;
  background: rgba(234,240,255,.88);
  transform: translateX(-50%);
  animation: dot 1.25s infinite ease-in-out;
}
@keyframes dot{
  0%{transform:translate(-50%,0); opacity:.9}
  60%{transform:translate(-50%,12px); opacity:.25}
  100%{transform:translate(-50%,0); opacity:.9}
}

/* gate */
.sound-gate{
  position:absolute; inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background: rgba(0,0,0,.30);
}
.sound-gate-card{
  width: min(460px, calc(100% - 48px));
  border-radius: var(--r22);
  border: 1px solid rgba(234,240,255,.18);
  background: rgba(10,16,34,.55);
  backdrop-filter: blur(14px);
  padding: 18px;
  box-shadow: var(--shadow);
  text-align:left;
}
.sound-gate-title{
  font-weight:900;
  letter-spacing:.04em;
  margin-bottom: 14px;
}

/* ------------------------------------------------------------
   SECTIONS
------------------------------------------------------------ */
.section{
  padding: 96px 0;
  position:relative;
}
.section-soft{
  background: linear-gradient(180deg, rgba(6,8,16,.40), rgba(6,8,16,.62));
  border-top: 1px solid rgba(234,240,255,.10);
  border-bottom: 1px solid rgba(234,240,255,.10);
}
.section-dark{
  background: linear-gradient(180deg, rgba(5,7,13,.72), rgba(5,7,13,.86));
  border-top: 1px solid rgba(234,240,255,.10);
  border-bottom: 1px solid rgba(234,240,255,.10);
}
.section-gradient{
  background:
    radial-gradient(1000px 700px at 18% 25%, rgba(124,58,237,.25), transparent 60%),
    radial-gradient(900px 650px at 82% 50%, rgba(6,182,212,.18), transparent 60%),
    linear-gradient(180deg, rgba(6,8,16,.50), rgba(6,8,16,.72));
  border-top: 1px solid rgba(234,240,255,.10);
  border-bottom: 1px solid rgba(234,240,255,.10);
}

.section-contact{
  background: linear-gradient(180deg, rgba(5,7,13,.78), rgba(5,7,13,.92));
  border-top: 1px solid rgba(234,240,255,.10);
}

.mega-title{
  margin: 0 0 30px;
  font-size: var(--mega);
  letter-spacing: .08em;
  text-transform: uppercase;
  line-height: .90;
}

/* OFFERS */
.offers{
  display:grid;
  gap: 16px;
  margin-top: 18px;
}
.offer{
  display:flex;
  gap: 18px;
  padding: 18px 18px;
  border-radius: var(--r22);
  border: 1px solid rgba(234,240,255,.12);
  background: rgba(10,16,34,.28);
  backdrop-filter: blur(10px);
}
.offer-k{
  flex:0 0 auto;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: rgba(234,240,255,.08);
  border: 1px solid rgba(234,240,255,.10);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 950;
  letter-spacing: .06em;
}
.offer-h{
  font-weight: 950;
  font-size: 1.12rem;
  letter-spacing: .02em;
}
.offer-p{
  margin-top: 6px;
  color: var(--muted);
  max-width: 900px;
}

/* ------------------------------------------------------------
   STAGES (full screen blocks)
------------------------------------------------------------ */
.section-stage{
  padding: 110px 0 0;
  background: transparent;
}
.stage{
  min-height: 100vh;
  display:flex;
  align-items:center;
  padding: 80px 0;
  position:relative;
  border-top: 1px solid rgba(234,240,255,.10);
  background: linear-gradient(180deg, rgba(6,8,16,.35), rgba(6,8,16,.55));
}
.stage:nth-of-type(2){
  background: linear-gradient(180deg, rgba(6,8,16,.40), rgba(6,8,16,.58));
}
.stage:nth-of-type(3){
  background: linear-gradient(180deg, rgba(6,8,16,.45), rgba(6,8,16,.62));
}

.stage-inner{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 22px;
  align-items:end;
}

.stage-sub{
  color: var(--muted);
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.stage-title{
  font-size: var(--stageTitle);
  font-weight: 950;
  letter-spacing: .10em;
  text-transform: uppercase;
  line-height: .90;
}

.stage-list{
  list-style:none;
  padding:0;
  margin: 18px 0 0;
  display:grid;
  gap: 10px;
  color: var(--muted);
  font-size: 1.08rem;
}
.stage-list li{
  padding-left: 14px;
  position:relative;
}
.stage-list li::before{
  content:"";
  position:absolute;
  left:0; top:.55em;
  width: 6px; height: 6px;
  border-radius:50%;
  background: linear-gradient(135deg, var(--accent2), var(--accent1));
  box-shadow: 0 0 0 4px rgba(6,182,212,.12);
}

/* video anchored bottom-right within its column */
.stage-video{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  justify-content:flex-end;
  gap: 10px;
}
.yt-wrap{
  width: min(52vw, 920px);
  aspect-ratio: 16/9;
  border-radius: var(--r22);
  overflow:hidden;
  border: 1px solid rgba(234,240,255,.14);
  box-shadow: var(--shadow);
  background: rgba(10,16,34,.35);
}
.yt{
  width:100%;
  height:100%;
}
.stage-video-note{
  color: var(--muted2);
  font-size: .95rem;
  letter-spacing:.02em;
}

/* ------------------------------------------------------------
   STEPS (line-by-line reveal)
------------------------------------------------------------ */
.steps{
  display:grid;
  gap: 18px;
  margin-top: 14px;
}
.step{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap: 18px;
  padding: 18px;
  border-radius: var(--r22);
  border: 1px solid rgba(234,240,255,.12);
  background: rgba(10,16,34,.28);
  backdrop-filter: blur(10px);
}
.step-n{
  font-weight: 950;
  letter-spacing: .10em;
  font-size: 1.35rem;
  color: rgba(234,240,255,.88);
}
.step-h{
  font-weight: 950;
  font-size: 1.18rem;
}
.step-p{
  margin-top: 8px;
  color: var(--muted);
}

/* ------------------------------------------------------------
   CAROUSEL (bigger, 1.5 items visible)
------------------------------------------------------------ */
.carousel-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 18px;
  margin-bottom: 18px;
}
.carousel-lead{
  margin: 0;
  color: var(--muted);
  max-width: 760px;
}
.carousel-controls{
  display:flex;
  gap: 10px;
}

.carousel{
  display:flex;
  gap: 16px;
  overflow-x:auto;
  padding: 10px 2px 18px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.carousel::-webkit-scrollbar{height:10px}
.carousel::-webkit-scrollbar-thumb{
  background: rgba(234,240,255,.16);
  border-radius:999px;
}
.card{
  flex: 0 0 62%;
  scroll-snap-align: start;
  border-radius: var(--r22);
  overflow:hidden;
  border: 1px solid rgba(234,240,255,.12);
  background: rgba(10,16,34,.30);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 50px rgba(0,0,0,.35);
}
.card-img{
  height: min(46vh, 380px);
  background: rgba(0,0,0,.25);
}
.card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.card-body{
  padding: 16px;
}
.card-title{
  font-weight: 950;
  letter-spacing:.02em;
  font-size: 1.05rem;
}
.card-text{
  margin-top: 6px;
  color: var(--muted);
}

/* ------------------------------------------------------------
   RECO
------------------------------------------------------------ */
.reco-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 10px;
}
.reco{
  padding: 18px;
  border-radius: var(--r22);
  border: 1px solid rgba(234,240,255,.12);
  background: rgba(10,16,34,.28);
  backdrop-filter: blur(10px);
}
.reco-h{
  font-weight: 950;
  font-size: 1.15rem;
  letter-spacing:.02em;
}
.reco-p{
  margin-top: 8px;
  color: var(--muted);
}

/* ------------------------------------------------------------
   CONTACT + FOOTER
------------------------------------------------------------ */
.contact-wrap{
  display:grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 18px;
  align-items:start;
  margin-top: 10px;
}
.contact-note{
  padding: 18px;
  border-radius: var(--r22);
  border: 1px solid rgba(234,240,255,.12);
  background: rgba(10,16,34,.28);
  backdrop-filter: blur(10px);
  color: var(--muted);
}
.contact-mini{
  margin-top: 14px;
  padding: 18px;
  border-radius: var(--r22);
  border: 1px solid rgba(234,240,255,.12);
  background: rgba(10,16,34,.20);
  backdrop-filter: blur(10px);
}
.mini-k{
  font-weight: 950;
  letter-spacing:.10em;
  color: rgba(234,240,255,.88);
  margin-bottom: 10px;
  text-transform: uppercase;
  font-size: .9rem;
}
.contact-mini ul{
  margin:0;
  padding-left: 18px;
  color: var(--muted);
  display:grid;
  gap: 6px;
}

.form{
  border-radius: var(--r22);
  border: 1px solid rgba(234,240,255,.14);
  background: rgba(10,16,34,.38);
  backdrop-filter: blur(12px);
  padding: 18px;
  box-shadow: var(--shadow);
}
.form label{display:block; margin-bottom: 12px}
.form span{
  display:block;
  margin-bottom: 8px;
  color: rgba(234,240,255,.82);
  font-weight: 800;
  letter-spacing:.02em;
}
.form input, .form textarea{
  width:100%;
  border-radius: 14px;
  border: 1px solid rgba(234,240,255,.14);
  background: rgba(6,8,16,.55);
  padding: 12px 12px;
  outline:none;
}
.form input:focus, .form textarea:focus{
  border-color: rgba(6,182,212,.35);
  box-shadow: 0 0 0 4px rgba(6,182,212,.12);
}
.grid2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.chk{
  display:flex !important;
  gap: 10px;
  align-items:flex-start;
  margin: 10px 0 14px;
}
.chk input{width:auto; margin-top: 4px}
.chk span{margin:0; color: var(--muted); font-weight:700}

.form-alert{
  border-radius: 16px;
  padding: 12px;
  margin-bottom: 14px;
  border: 1px solid rgba(234,240,255,.14);
  background: rgba(10,16,34,.25);
  color: rgba(234,240,255,.88);
}
.form-alert.ok{
  border-color: rgba(34,197,94,.28);
  background: rgba(34,197,94,.10);
}
.form-alert.bad{
  border-color: rgba(239,68,68,.28);
  background: rgba(239,68,68,.10);
}

.footer{
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid rgba(234,240,255,.10);
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
}
.footer-brand{
  font-weight: 950;
  letter-spacing: .18em;
}
.footer-sub{
  color: var(--muted2);
  margin-top: 6px;
}
.footer-right{
  color: var(--muted2);
  display:flex;
  gap: 10px;
  align-items:center;
}
.footer-right a{color: rgba(234,240,255,.78)}
.footer-right a:hover{color: rgba(234,240,255,.98)}
.footer-sep{opacity:.6}

/* ------------------------------------------------------------
   REVEALS – pomalejší vykreslení
------------------------------------------------------------ */
.reveal, .reveal-line{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 1.15s ease, transform 1.15s ease;
  will-change: opacity, transform;
}
.reveal[data-slow]{
  transition-duration: 1.55s;
}
.in-view{
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* ------------------------------------------------------------
   RESPONSIVE
------------------------------------------------------------ */
@media (max-width: 1020px){
  .nav{margin-top:8px}
  .stage-inner{
    grid-template-columns: 1fr;
    align-items:start;
  }
  .stage-video{
    align-items:stretch;
  }
  .yt-wrap{
    width:100%;
  }
  .contact-wrap{
    grid-template-columns: 1fr;
  }
  .reco-grid{
    grid-template-columns: 1fr;
  }
  .card{
    flex-basis: 82%;
  }
}

@media (max-width: 860px){
  .nav-burger{display:block}
  .nav-links{
    position:absolute;
    top: calc(var(--navH) + 12px);
    left: 12px;
    right: 12px;
    display:none;
    flex-direction:column;
    gap: 10px;
    padding: 14px;
    border-radius: 18px;
    border: 1px solid rgba(234,240,255,.14);
    background: rgba(6,8,16,.68);
    backdrop-filter: blur(14px);
  }
  .nav-links.open{display:flex}
  .nav-links a{width:100%; padding:10px 12px; border-radius: 14px}
  .nav-cta{width:100%; text-align:center}
  .grid2{grid-template-columns: 1fr}
}