/* =========================================================
   Vojtěch Malátek — dark design system
   ========================================================= */
:root{
  --bg: #060D1A;
  --bg-1: #0A1525;
  --bg-2: #0C1B30;
  --bg-3: #10243E;

  --ink: #FFFFFF;
  --ink-soft: rgba(255,255,255,0.65);
  --ink-faint: rgba(255,255,255,0.35);

  --accent: #0EA5E9;
  --accent-2: #14B8A6;

  --line: rgba(255,255,255,0.07);
  --line-strong: rgba(255,255,255,0.13);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 28px;

  --shadow-lift: 0 4px 8px rgba(0,0,0,0.3), 0 24px 48px -16px rgba(14,165,233,0.2);

  --ease: cubic-bezier(.22,1,.36,1);
  --container: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
html, body{ margin:0; padding:0; background: var(--bg); color: var(--ink); }
body{
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font-family: inherit; cursor:pointer; }

h1,h2,h3,h4{
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 600; letter-spacing: -0.01em; margin: 0;
  color: var(--ink);
}

.eyebrow{
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem; letter-spacing: 0.16em;
  text-transform: uppercase; font-weight: 500;
  color: var(--accent-2);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before{
  content:""; width: 18px; height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.container{
  width: 100%; max-width: var(--container);
  margin: 0 auto; padding: 0 28px;
}

:focus-visible{
  outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px;
}

.grad-text{
  background: linear-gradient(100deg, var(--accent), var(--accent-2) 65%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* =========================================================
   Header
   ========================================================= */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(6,13,26,0.85);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  box-shadow: 0 1px 0 rgba(0,0,0,0.4), 0 12px 32px -16px rgba(0,0,0,0.6);
}
.site-header .container{
  display:flex; align-items:center; justify-content: space-between; height: 72px;
}
.brand img{ height: 28px; width:auto; }
.brand{ display:flex; align-items:center; }

.nav-main{ display:flex; align-items:center; gap: 36px; }
.nav-main a{
  font-size: 0.92rem; font-weight: 500; color: var(--ink-soft);
  position: relative; padding: 6px 0;
  transition: color .2s var(--ease);
}
.nav-main a:hover{ color: var(--ink); }
.nav-main a[aria-current="page"]{ color: var(--ink); }
.nav-main a[aria-current="page"]::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 2px;
}

.header-right{ display:flex; align-items:center; gap: 20px; }
.social-row{ display:flex; align-items:center; gap: 12px; }
.social-row a{
  width: 32px; height:32px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  color: var(--ink-faint); border: 1px solid var(--line);
  transition: all .2s var(--ease);
}
.social-row a:hover{ color: var(--ink); border-color: var(--line-strong); background: rgba(255,255,255,0.07); }
.social-row svg{ width:15px; height:15px; }

.nav-toggle{
  display:none; width: 38px; height:38px;
  border-radius: 9px; border: 1px solid var(--line);
  background: transparent; align-items:center; justify-content:center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:17px; height:1.5px; background: var(--ink-soft);
  position:relative; transition: all .25s var(--ease);
}
.nav-toggle span::before{ position:absolute; top:-5px; }
.nav-toggle span::after{ position:absolute; top:5px; }

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 13px 24px; border-radius: 999px;
  font-weight: 600; font-size: 0.92rem;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
  white-space: nowrap;
}
.btn-primary{
  color: #fff;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 20px -10px rgba(14,165,233,0.5);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 14px 28px -10px rgba(14,165,233,0.55); }

.btn-ghost{
  color: var(--ink);
  background: rgba(255,255,255,0.07);
  border-color: var(--line-strong);
}
.btn-ghost:hover{ background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.22); transform: translateY(-2px); }

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position: relative;
  padding: 110px 0 80px;
  overflow: hidden;
  background: linear-gradient(160deg, var(--bg) 0%, var(--bg-1) 55%, #0F1F3A 100%);
}
.hero::before{
  content:""; position:absolute; top:-15%; right:-8%;
  width: 680px; height: 680px;
  background: radial-gradient(circle at 35% 35%, rgba(14,165,233,0.28), rgba(20,184,166,0) 60%);
  pointer-events:none;
}
.hero::after{
  content:""; position:absolute; bottom:-20%; left:-10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(20,184,166,0.15), rgba(20,184,166,0) 65%);
  pointer-events:none;
}
.hero .container{ position:relative; z-index:1; }
.hero-inner{ max-width: 760px; }
.hero-inner .eyebrow{ margin-bottom: 22px; }
.hero h1{
  font-size: clamp(2.5rem, 5.4vw, 4.1rem);
  line-height: 1.05; margin-bottom: 20px;
}
.hero p.lead{
  font-size: 1.1rem; color: var(--ink-soft);
  max-width: 580px; margin-bottom: 36px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom: 64px; }

.signal{
  width: 100%; max-width: 920px; height: auto; display:block;
  margin-bottom: 32px;
}
.signal path.signal-line{
  fill:none; stroke: url(#signalGradient);
  stroke-width: 2; stroke-linecap: round;
  stroke-dasharray: 1200; stroke-dashoffset: 1200;
  animation: draw 2.6s var(--ease) forwards .3s;
}
.signal circle{ opacity:0; animation: dotIn .5s var(--ease) forwards; }
@keyframes draw{ to{ stroke-dashoffset:0; } }
@keyframes dotIn{ to{ opacity:1; } }

.hero-contact{
  display:flex; gap:28px; flex-wrap:wrap;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.hero-contact a{
  display:flex; align-items:center; gap:10px;
  color: var(--ink-soft); font-size: 0.95rem; font-weight: 500;
  transition: color .2s var(--ease);
}
.hero-contact a:hover{ color: var(--ink); }
.hero-contact a svg{ width:15px; height:15px; opacity:.6; flex:none; }

/* =========================================================
   About
   ========================================================= */
.about{
  padding: 110px 0;
  background: var(--bg-1);
  border-top: 1px solid var(--line);
}
.about-grid{
  display:grid; grid-template-columns: 0.85fr 1.15fr;
  gap: 64px; align-items: center;
}
.profile-card{
  position: relative; border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--bg-2), var(--bg));
  aspect-ratio: 4/5;
  display:flex; align-items:center; justify-content:center;
  overflow:hidden;
  box-shadow: var(--shadow-lift);
  border: 1px solid var(--line);
}
.profile-card .mark{ width: 76%; filter: brightness(0) invert(1); opacity: 0.88; }
.profile-card .ring{
  position:absolute; inset:0;
  background:
    radial-gradient(circle at 20% 15%, rgba(14,165,233,0.45), transparent 45%),
    radial-gradient(circle at 85% 90%, rgba(20,184,166,0.38), transparent 50%);
  mix-blend-mode: screen;
}
.profile-card .grid-overlay{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 36px 36px;
}
.profile-caption{
  position:absolute; left:22px; right:22px; bottom:20px;
  display:flex; justify-content:space-between;
  font-family:'JetBrains Mono', monospace;
  font-size:0.68rem; letter-spacing:0.06em; color: var(--ink-faint);
}

.about-copy h2{ font-size: clamp(1.9rem, 3vw, 2.5rem); margin: 18px 0 20px; }
.about-copy p{ color: var(--ink-soft); font-size: 1rem; margin-bottom: 14px; max-width: 520px; }

.service-list{ margin-top: 32px; display:flex; flex-direction:column; gap: 12px; }
.service-row{
  display:flex; align-items:flex-start; gap: 16px;
  padding: 18px; border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
}
.service-row:hover{
  border-color: var(--line-strong);
  background: rgba(255,255,255,0.055);
  transform: translateY(-2px);
}
.service-icon{
  flex: none; width: 42px; height: 42px; border-radius: 11px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(255,255,255,0.06); border: 1px solid var(--line);
  color: var(--ink-soft);
}
.service-icon svg{ width:20px; height:20px; }
.service-row h3{ font-size: 1rem; margin-bottom: 5px; }
.service-row p{ color: var(--ink-soft); font-size: 0.91rem; margin:0; }

/* =========================================================
   Services section
   ========================================================= */
.services-section{
  padding: 100px 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}
.section-head{ max-width: 580px; margin-bottom: 52px; }
.section-head h2{ font-size: clamp(1.9rem, 3vw, 2.5rem); margin: 16px 0 0; }
.services-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card{
  padding: 30px 24px; border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--bg-1);
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.service-card:hover{
  transform: translateY(-5px);
  border-color: var(--line-strong);
  background: var(--bg-2);
}
.service-card .num{
  font-family:'JetBrains Mono', monospace; font-size: 0.75rem;
  color: var(--ink-faint); margin-bottom: 20px; display:block;
}
.service-card h3{ font-size: 1.2rem; margin-bottom: 10px; }
.service-card p{ color: var(--ink-soft); font-size: 0.94rem; margin:0; line-height:1.65; }

/* =========================================================
   CTA band
   ========================================================= */
.section-wrap{ padding: 100px 0; background: var(--bg-1); border-top: 1px solid var(--line); }
.cta-band{
  position: relative; margin: 0 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #060A14, var(--bg-2) 65%, #102848);
  border: 1px solid var(--line-strong);
  padding: 72px 60px; overflow: hidden;
  display:flex; align-items:center; justify-content:space-between; gap: 40px;
  flex-wrap: wrap;
}
.cta-band::before{
  content:""; position:absolute; right:-5%; top:-30%;
  width: 440px; height:440px; border-radius:50%;
  background: radial-gradient(circle, rgba(14,165,233,0.38), transparent 68%);
}
.cta-band::after{
  content:""; position:absolute; left:15%; bottom:-40%;
  width: 320px; height:320px; border-radius:50%;
  background: radial-gradient(circle, rgba(20,184,166,0.22), transparent 70%);
}
.cta-copy{ position:relative; z-index:1; max-width: 520px; }
.cta-copy h2{ font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 14px 0 12px; }
.cta-copy p{ color: var(--ink-soft); margin:0; font-size: 1rem; }
.cta-actions{ position:relative; z-index:1; display:flex; gap:14px; flex-wrap:wrap; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer{
  background: var(--bg); border-top: 1px solid var(--line);
  padding: 72px 0 32px;
}
.footer-grid{
  display:grid; grid-template-columns: 1.3fr 1fr 1fr;
  gap: 48px; padding-bottom: 52px;
  border-bottom: 1px solid var(--line);
}
.footer-brand img{ height: 26px; margin-bottom: 18px; }
.footer-brand p{ max-width: 340px; color: var(--ink-soft); font-size: 0.9rem; line-height:1.65; }
.footer-col h4{
  font-family:'JetBrains Mono', monospace; text-transform: uppercase;
  letter-spacing: 0.12em; font-size: 0.7rem; color: var(--ink-faint);
  margin-bottom: 18px;
}
.footer-col a{
  display:block; color: var(--ink-soft); margin-bottom: 12px; font-size: 0.92rem;
  transition: color .2s var(--ease);
}
.footer-col a:hover{ color: var(--ink); }

.footer-area-badge{
  display:inline-flex; align-items:center; gap:9px;
  padding: 9px 15px; border-radius: 999px;
  border: 1px solid var(--line); font-size: 0.82rem;
  margin-top: 16px; color: var(--ink-soft);
}
.footer-area-badge .dot{
  width:7px; height:7px; border-radius:50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(20,184,166,0.2);
}

.footer-bottom{
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap: 14px; padding-top: 26px;
  font-size: 0.8rem; color: var(--ink-faint);
}
.footer-bottom .social-row a{ border-color: var(--line); color: var(--ink-faint); }

/* =========================================================
   Kontakt page
   ========================================================= */
.page-hero{
  background: linear-gradient(160deg, var(--bg) 0%, var(--bg-1) 55%, #0F1F3A 100%);
  padding: 96px 0 72px; position:relative; overflow:hidden;
}
.page-hero::before{
  content:""; position:absolute; top:-15%; right:-8%;
  width: 600px; height: 600px;
  background: radial-gradient(circle at 35% 35%, rgba(14,165,233,0.22), rgba(20,184,166,0) 60%);
  pointer-events:none;
}
.page-hero .container{ position:relative; z-index:1; }
.page-hero .eyebrow{ margin-bottom: 16px; }
.page-hero h1{ font-size: clamp(2.1rem, 4.4vw, 3.2rem); max-width: 680px; }
.page-hero p.lead{ color: var(--ink-soft); font-size: 1.05rem; max-width: 520px; margin-top: 16px; }

.contact-grid{
  display:grid; grid-template-columns: repeat(4, 1fr);
  gap: 18px; margin-bottom: 24px;
}
.contact-grid .span-2{ grid-column: span 2; }
.info-card{
  border: 1px solid var(--line); background: var(--bg-1);
  border-radius: var(--radius-md); padding: 26px 22px;
  transition: transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.info-card:hover{
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: var(--bg-2);
}
.info-card .ic{
  width:40px; height:40px; border-radius:10px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--line);
  color: var(--ink-soft); display:flex; align-items:center; justify-content:center;
  margin-bottom: 14px;
}
.info-card .ic svg{ width:18px; height:18px; }
.info-card h3{ font-size: 0.96rem; margin-bottom: 8px; }
.info-card p, .info-card a{ color: var(--ink-soft); font-size: 0.92rem; margin: 0 0 4px; display:block; }
.info-card a:hover{ color: var(--ink); }

.qr-card{
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center;
}
.qr-card img{ width: 110px; height:110px; border-radius: 8px; margin-bottom: 10px; background: #fff; padding: 6px; }
.qr-card span{ font-size: 0.78rem; color: var(--ink-faint); }

.contact-form-section{ padding: 90px 0 110px; background: var(--bg-1); border-top: 1px solid var(--line); }
.form-shell{ max-width: 740px; margin: 0 auto; text-align:center; }
.form-shell h2{ font-size: clamp(1.7rem, 3vw, 2.2rem); margin-bottom: 10px; }
.form-shell > p{ color: var(--ink-soft); margin-bottom: 42px; }

form.contact-form{
  text-align:left; display:grid; grid-template-columns: 1fr 1fr; gap: 24px 26px;
}
.field{ display:flex; flex-direction:column; gap: 7px; }
.field.full{ grid-column: 1 / -1; }
.field label{ font-size: 0.83rem; font-weight: 600; color: var(--ink-faint); }
.field input, .field textarea{
  border:none; border-bottom: 1px solid var(--line-strong);
  background: transparent; padding: 9px 2px;
  font-family: inherit; font-size: 0.98rem; color: var(--ink);
  transition: border-color .2s var(--ease); resize: vertical;
}
.field input:focus, .field textarea:focus{ outline:none; border-color: var(--accent); }
.field textarea{ min-height: 110px; }
.form-actions{ grid-column: 1/-1; display:flex; align-items:center; gap: 16px; flex-wrap:wrap; }
.form-note{ font-size: 0.83rem; color: var(--ink-faint); }
.form-status{ font-size: 0.88rem; }
.form-status[data-state="success"]{ color: var(--accent-2); }
.form-status[data-state="error"]{ color: #F87171; }

.socials-block{ text-align:center; margin-top: 56px; }
.socials-block p{ color: var(--ink-faint); font-size: 0.88rem; margin-bottom: 16px; }
.socials-block .social-row{ justify-content:center; }

/* =========================================================
   Reveal-on-scroll
   ========================================================= */
[data-reveal]{
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].is-visible{ opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce){
  .signal path.signal-line{ animation:none; stroke-dashoffset:0; }
  .signal circle{ animation:none; opacity:1; }
  html{ scroll-behavior:auto; }
  [data-reveal]{ opacity:1; transform:none; transition:none; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px){
  .about-grid{ grid-template-columns: 1fr; }
  .profile-card{ max-width: 360px; margin: 0 auto; aspect-ratio: 1/1; }
  .services-grid{ grid-template-columns: 1fr 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .contact-grid{ grid-template-columns: 1fr 1fr; }
  .contact-grid .span-2{ grid-column: span 2; }
}
@media (max-width: 760px){
  .nav-main, .header-right .social-row{ display:none; }
  .nav-toggle{ display:flex; }
  .site-header.menu-open .nav-main{
    display:flex; position:absolute; top:72px; left:0; right:0;
    background: var(--bg-1); border-bottom:1px solid var(--line);
    flex-direction:column; align-items:flex-start; gap:0; padding: 8px 28px 20px;
  }
  .site-header.menu-open .nav-main a{ padding: 12px 0; width:100%; }
  .hero{ padding: 80px 0 60px; }
  .hero-actions{ margin-bottom: 48px; }
  .services-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; gap: 32px; }
  .cta-band{ padding: 48px 28px; flex-direction:column; align-items:flex-start; }
  .contact-grid{ grid-template-columns: 1fr; }
  .contact-grid .span-2{ grid-column: span 1; }
  form.contact-form{ grid-template-columns: 1fr; }
}