:root{
    --navy-900:#06162d;
    --turquoise-500:#079cb7;
    --turquoise-600:#05788d;
    --turquoise-text:#05788d;
    --turquoise-on-dark:#4fd6ec;
    --turquoise-100:#e0f4f7;
    --paper:#f0f4f8;
    --ink-600:#4a5568;
    --ink-900:#0a111a;
    --accent-orange:#ff4d00;
    --error-600:#c22b1f;
    --line: rgba(11,45,89,0.2);
    --radius: 20px;
    --maxw: 1160px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink-900);
    font-family:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:'Space Grotesk', 'Inter', sans-serif;
    color:var(--navy-900);
    margin:0 0 .5em 0;
    letter-spacing:-0.03em;
    font-weight: 800;
  }
  .eyebrow{
    font-family:'IBM Plex Mono','Space Mono',monospace;
    font-size:.75rem;
    letter-spacing:.2em;
    text-transform:uppercase;
    color:var(--turquoise-600);
    display:inline-flex;
    align-items:center;
    gap:.6em;
    font-weight: 700;
  }
  .eyebrow::before{
    content:"";
    width:8px;height:8px;border-radius:2px;
    background:var(--accent-orange);
    display:inline-block;
  }
  .wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}
  a{color:inherit;}
  :focus-visible{outline:3px solid var(--turquoise-500); outline-offset:3px; border-radius:4px;}
  section{scroll-margin-top:80px;}
  .skip-link{
    position:fixed; top:10px; left:10px; z-index:1000;
    padding:10px 14px; border-radius:8px; background:#fff; color:var(--navy-900);
    font-weight:700; text-decoration:none; transform:translateY(-150%);
  }
  .skip-link:focus{transform:translateY(0);}

  /* NAV */
  header.site{
    position:sticky; top:0; z-index:100;
    background:rgba(255, 255, 255, 0.95);
    backdrop-filter:blur(12px);
    border-bottom:2px solid var(--navy-900);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:14px 32px; max-width:var(--maxw); margin:0 auto;
  }
  .brand{display:flex; align-items:center; gap:10px; min-width:0; white-space:nowrap; font-family:'Space Grotesk',sans-serif; font-weight:800; color:var(--navy-900); text-decoration:none; font-size: 1.1rem;}
  .brand-mark{display:block; width:42px; height:auto; flex:none;}
  .brand-name{display:inline-flex; align-items:baseline; gap:0; line-height:1; letter-spacing:-.03em;}
  .brand-domain{color:var(--turquoise-600);}
  .navlinks{display:flex; gap:32px; font-size:.95rem; font-weight:600;}
  .navlinks a{text-decoration:none; color:var(--ink-600); transition:color .2s;}
  .navlinks a:hover{color:var(--turquoise-600);}
  .nav > .cta-btn{margin-left:12px;}
  .cta-btn{
    background:var(--navy-900); color:#fff; border:none;
    padding:12px 24px; border-radius:12px; font-weight:700; font-size:.9rem;
    cursor:pointer; text-decoration:none; display:inline-block;
    transition:all .2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 0 rgba(0,0,0,0.1);
  }
  .cta-btn:hover{background:var(--turquoise-600); transform:translateY(-2px); box-shadow: 0 6px 0 rgba(0,0,0,0.05);}
  .navToggle{
    display:none; background:var(--paper); border:2px solid var(--navy-900); border-radius:10px;
    width:42px; height:42px; flex-shrink:0; cursor:pointer; align-items:center; justify-content:center;
  }
  .navToggle svg{width:22px; height:22px;}
  .mobile-panel{
    display:none; flex-direction:column; gap:4px; padding:12px 32px 24px;
    background: #fff; border-bottom: 2px solid var(--navy-900);
  }
  .mobile-panel a{
    text-decoration:none; color:var(--navy-900); font-weight:700; font-size:1.1rem;
    padding:14px 0; border-bottom: 1px solid var(--line);
  }
  .mobile-panel a:last-child{border-bottom:none;}
  header.site.open .mobile-panel{display:flex;}

  /* HERO */
  .hero{
    background:linear-gradient(130deg, #0a2746 0%, #0d4160 55%, #0a6e80 130%);
    color:#fff; padding:110px 0 90px; position:relative; overflow:hidden;
    border-bottom:4px solid var(--turquoise-500);
  }
  .hero .wrap{display:grid; grid-template-columns:1.2fr .8fr; gap:56px; align-items:center; position: relative; z-index: 1;}
  .hero h1{color:#fff; font-size:clamp(2.5rem, 4.7vw, 3.8rem); line-height:1; margin-bottom: 0.4em;}
  .hero p.lead{color:rgba(255,255,255,0.85); font-size:1.18rem; max-width:44ch; margin:22px 0 0; font-weight:500;}
  .hero .eyebrow{color:var(--turquoise-on-dark); margin-bottom: 1.5rem;}
  .hero-art{position:relative; filter:drop-shadow(0 0 26px rgba(79,214,236,.28));}
  .hero-art img{width:100%; height:auto; display:block; transform: scale(1.1);}
  #logo-parallax{transform-box:view-box; transform-origin:center;}

  @media (prefers-reduced-motion: no-preference){
    #logo-parallax{animation:fish-float 6s ease-in-out infinite;}
    @keyframes fish-float{
      0%,100%{transform:translate3d(0,0,0) rotate(-1deg);}
      50%{transform:translate3d(10px,-15px,0) rotate(1deg);}
    }
  }

  section{padding:92px 0;}
  section.tight{padding:56px 0;}
  .section-head{max-width:720px; margin-bottom:56px;}
  .section-head h2{font-size:clamp(1.95rem, 3.7vw, 2.7rem); line-height:1.12;}
  .section-head p{color:var(--ink-600); font-size:1.1rem; margin-top:14px; font-weight:500;}

  /* O MNE */
  .about{background:#fff; border-bottom:2px solid var(--navy-900); padding:76px 0;}
  .about-grid{
    display:grid; grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);
    gap:72px; align-items:start;
  }
  .about h2{font-size:clamp(1.9rem,3.3vw,2.5rem); line-height:1.12; margin-top:14px;}
  .about-copy p{color:var(--ink-600); font-size:1.08rem; line-height:1.7; margin:0 0 18px;}
  .about-copy p:last-child{margin-bottom:0;}

  /* SLUZBY */
  .clusters{display:grid; grid-template-columns:repeat(4,1fr); gap:22px;}
  .cluster{
    background:#fff; border:2px solid var(--navy-900); border-radius:var(--radius);
    padding:30px 26px; position:relative; transition:transform .2s, box-shadow .2s;
    display: flex; flex-direction: column;
  }
  .cluster:hover{transform:translateY(-6px); box-shadow:0 10px 0 var(--navy-900);}
  .cluster .tag{
    font-family:'IBM Plex Mono',monospace; font-size:.75rem; color:var(--turquoise-600);
    letter-spacing:.1em; text-transform:uppercase; font-weight: 700;
  }
  .cluster h3{font-size:1.2rem; margin:13px 0 15px;}
  .cluster ul{margin:0; padding-left:20px; color:var(--ink-600); font-size:.95rem; font-weight: 500;}
  .cluster li{margin-bottom:10px;}
  .cluster::before{
    content:""; position:absolute; top:-2px; left:28px; width:48px; height:8px;
    background:var(--accent-orange); border-radius:0 0 4px 4px;
  }
  .cluster.primary{
    grid-column:span 2; background:var(--navy-900); color:#fff;
    box-shadow:8px 8px 0 var(--turquoise-600);
  }
  .cluster.primary:hover{box-shadow:8px 14px 0 var(--turquoise-600);}
  .cluster.primary .tag{color:var(--turquoise-on-dark);}
  .cluster.primary h3{color:#fff;}
  .cluster.primary ul{color:#d9e8f3;}
  .cluster.consulting{
    grid-column:1/-1; background:var(--turquoise-100);
    display:grid; grid-template-columns:minmax(220px,.7fr) 2fr;
    column-gap:48px; align-items:start;
  }
  .cluster.consulting .tag{grid-column:1;}
  .cluster.consulting h3{grid-column:1; margin-bottom:0;}
  .cluster.consulting ul{
    grid-column:2; grid-row:1/span 2; align-self:center;
    display:grid; grid-template-columns:repeat(2,minmax(0,1fr));
    gap:16px 32px; padding:0; list-style:none;
  }
  .cluster.consulting li{position:relative; margin:0; padding-left:18px;}
  .cluster.consulting li::before{
    content:""; position:absolute; left:0; top:.58em;
    width:7px; height:7px; border-radius:50%; background:var(--turquoise-600);
  }

  /* REFERENCE */
  .refs{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
  .ref-card{
    background:#fff; color:var(--ink-900); border-radius:var(--radius);
    padding:34px; display:flex; flex-direction:column; gap:18px; min-height:280px;
    border:2px solid var(--navy-900); box-shadow:6px 6px 0 var(--turquoise-500);
    position:relative; transition:transform .2s ease, box-shadow .2s ease;
  }
  .ref-card::before{
    content:""; position:absolute; top:-2px; left:28px;
    width:42px; height:7px; background:var(--accent-orange);
    border-radius:0 0 4px 4px;
  }
  .ref-card:hover{transform:translate(-2px,-2px); box-shadow:8px 8px 0 var(--turquoise-500);}
  .ref-top{
    display:flex; align-items:baseline; justify-content:space-between;
    gap:16px; min-height:36px;
  }
  .ref-card .num{
    font-family:'IBM Plex Mono',monospace; color:var(--navy-900);
    background:var(--turquoise-100); border:1px solid var(--turquoise-500);
    border-radius:6px; padding:7px 8px;
    font-size:.78rem; line-height:1; font-weight:700;
  }
  .ref-card .client-type{
    color:var(--ink-600); font-family:'IBM Plex Mono',monospace; font-size:.7rem;
    line-height:1; letter-spacing:.06em; text-align:right; text-transform:uppercase;
  }
  .ref-card h3{color:var(--navy-900); font-size:1.35rem; margin:0;}
  .ref-card p{color:var(--ink-600); font-size:1rem; margin:0;}
  .ref-card .summary{flex:1; line-height: 1.5;}
  .ref-card .result{
    color:var(--navy-900); flex:none; background:var(--turquoise-100);
    min-height:120px; padding:20px; border-radius:12px;
    line-height:1.5; border-left:4px solid var(--turquoise-500);
  }
  #reference{
    background:#edf4f7;
    border-top:2px solid var(--navy-900);
    border-bottom:2px solid var(--navy-900);
  }
  #reference .section-head{margin-bottom:48px;}
  .ref-card .result strong{
    display:block; margin-bottom:6px; color:var(--turquoise-text);
    font-family:'IBM Plex Mono',monospace; font-size:.75rem; font-weight:700;
    letter-spacing:.1em; text-transform:uppercase;
  }

  /* SPOLUPRACE */
  .process{display:grid; grid-template-columns:repeat(3,1fr); gap:28px; margin:0 0 56px;}
  .process-step{padding:24px; border:2px solid var(--navy-900); border-radius: var(--radius); background: #fff;}
  .process-step .num{
    font-family:'IBM Plex Mono',monospace; font-size:1.1rem; color:var(--turquoise-600); font-weight: 800;
    background: var(--turquoise-100); width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: 8px; margin-bottom: 20px;
  }
  .process-step h3{font-size:1.25rem; margin:0 0 12px;}
  .process-step p{margin:0; color:var(--ink-600); font-size:.95rem; font-weight: 500;}

  .tracks{display:grid; grid-template-columns:1fr 1fr; gap:28px;}
  .track{
    border:3px solid var(--navy-900); border-radius:var(--radius); padding:40px;
    background:#fff; box-shadow:8px 8px 0 var(--navy-900);
  }
  .track.hl{border-color:var(--turquoise-600); background:var(--turquoise-100); box-shadow:8px 8px 0 var(--turquoise-600);}
  .track .eyebrow{margin-bottom:16px;}
  .track h3 {font-size: 1.5rem; margin-bottom: 20px;}
  .track ul{padding-left:22px; color:var(--ink-900); font-weight: 500;}
  .track li{margin-bottom: 12px;}

  .meta-row{display:flex; gap:44px; flex-wrap:wrap; margin-top:56px; padding:36px; border:2px solid var(--navy-900); border-radius:var(--radius); background:#fff;}
  .meta-item .label{font-family:'IBM Plex Mono',monospace; font-size:.75rem; color:var(--ink-600); text-transform:uppercase; letter-spacing:.12em; font-weight: 700;}
  .meta-item .val{font-size: 1.25rem; font-weight:800; color:var(--navy-900); margin-top:8px;}

  /* KONTAKT */
  .contact{background: linear-gradient(160deg, var(--navy-900) 0%, #0b2d59 100%); color:#fff; position: relative; overflow: hidden;}
  .contact::before{
    content: ""; position: absolute; top: -50%; left: -10%; width: 60%; height: 200%;
    background:radial-gradient(circle, rgba(79,214,236,.1) 0%, transparent 70%);
    pointer-events: none;
  }
  .contact .wrap{display:grid; grid-template-columns:1fr 1.1fr; gap:64px; align-items:center; position:relative; z-index:1;}
  .contact-copy{position:relative; min-height:440px; display:flex; flex-direction:column; justify-content:center;}
  .contact-copy > :not(.contact-fish){position:relative; z-index:1;}
  .contact-fish{
    position:absolute; width:470px; max-width:none; height:auto;
    left:0; bottom:-155px; opacity:.075;
    pointer-events:none; user-select:none;
  }
  .contact h2{color:#fff; font-size:3.1rem; line-height:1;}
  .contact p{color:rgba(255,255,255,0.8); font-size:1.1rem; font-weight:500; max-width:48ch;}
  .contact-list{list-style:none; padding:0; margin:34px 0 0; display:flex; flex-direction:column; gap:15px;}
  .contact-list li{display:flex; align-items: center; gap:16px; font-size:1.1rem; color:#fff;}
  .contact-list .k{color:var(--turquoise-500); font-family:'IBM Plex Mono',monospace; font-size:.85rem; min-width:90px; font-weight: 700;}
  .contact-list a{text-decoration: none; border-bottom: 2px solid var(--turquoise-500); padding-bottom: 2px; transition: color 0.2s;}
  .contact-list a:hover{color:var(--turquoise-500);}
  .contact-list .email-row a{font-family:'Space Grotesk',sans-serif; font-size:1.35rem; font-weight:700;}
  .contact .eyebrow{color:var(--turquoise-on-dark);}

  .form-card{
    position:relative; background:#fff; color:var(--navy-900);
    border-radius:var(--radius); padding:42px;
    box-shadow:16px 16px 0 var(--turquoise-500);
  }
  .form-card::before{
    content:""; position:absolute; top:18px; right:18px;
    width:10px; height:10px; background:var(--accent-orange);
  }
  .form-kicker{
    display:block; margin-bottom:10px; color:var(--turquoise-600);
    font-family:'IBM Plex Mono',monospace; font-size:.72rem;
    font-weight:700; letter-spacing:.16em; text-transform:uppercase;
  }
  .form-card h3{font-size:1.65rem; margin:0 0 30px; color:var(--navy-900);}
  .form-card label{display:block; font-size:.85rem; color:var(--navy-900); margin-bottom:8px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;}
  .form-card .req{color:var(--accent-orange); margin-left:2px;}
  .form-card input, .form-card textarea{
    width:100%; padding:17px 18px; margin-bottom:8px; border-radius:10px; border:2px solid var(--navy-900);
    background:#fff; color:var(--navy-900); font-family:inherit; font-size:1rem; font-weight: 500;
    transition: border-color 0.2s;
  }
  .form-card input{min-height:56px;}
  .form-card textarea{min-height:190px; resize:vertical; line-height:1.55;}
  .form-card input:focus, .form-card textarea:focus{border-color: var(--turquoise-500); outline: none;}
  .form-card input::placeholder, .form-card textarea::placeholder{color:#a0aec0;}
  .form-card input[aria-invalid="true"], .form-card textarea[aria-invalid="true"]{border-color:var(--error-600);}
  .field-error{
    margin:0 0 20px; color:var(--error-600); font-size:.85rem; font-weight:600;
    display:flex; align-items:center; gap:7px;
  }
  .field-error::before{content:"⚠"; font-size:.9em;}
  .field-error[hidden]{display:none;}
  .form-field{margin-bottom:16px;}
  .form-card .cta-btn{width:100%; text-align:center; padding: 18px; font-size: 1.1rem; margin-top:8px;}
  .form-note{margin:16px 0 0; color:var(--ink-600) !important; font-size:.82rem !important; font-weight:500 !important; text-align:center; line-height:1.5;}
  .form-note a{color:var(--turquoise-600); font-weight:700;}
  .form-status{margin:16px 0 0; text-align:center; font-size:.9rem; font-weight:600; color:var(--turquoise-600);}
  .form-status[hidden]{display:none;}

  footer{padding:48px 0; color:var(--ink-600); font-size:.9rem; border-top: 2px solid var(--navy-900); background: #fff;}
  .footer-inner{display:flex; align-items:center; justify-content:space-between; gap:24px;}
  .footer-brand{
    font-family:'Space Grotesk',sans-serif;
    font-size:1rem;
    font-weight: 800;
    letter-spacing:-0.02em;
    color:var(--navy-900);
    display:inline-flex;
    align-items:center;
    gap:0;
  }
  .footer-brand span{color: var(--turquoise-600);}
  .footer-copy{text-align:right; font-weight: 500;}

  @media (max-width:1024px){
    .hero .wrap{grid-template-columns:1fr;}
    .hero-art{display: none;}
    .clusters{grid-template-columns:1fr 1fr;}
    .cluster.consulting{grid-template-columns:1fr;}
    .cluster.consulting .tag,
    .cluster.consulting h3,
    .cluster.consulting ul{grid-column:1; grid-row:auto;}
    .cluster.consulting h3{margin-bottom:16px;}
    .tracks{grid-template-columns:1fr;}
    .contact .wrap{grid-template-columns:1fr; gap:60px;}
    .contact-copy{min-height:0;}
    .contact-fish{width:390px; left:auto; right:-40px; bottom:-90px;}
  }

  @media (max-width:768px){
    .hero h1{font-size: 3.2rem;}
    .section-head h2{font-size: 2.2rem;}
    .about-grid{grid-template-columns:1fr; gap:28px;}
    .about h2{margin-bottom:0;}
    .refs{grid-template-columns:1fr;}
    .ref-card .result{min-height:0;}
    .process{grid-template-columns:1fr; gap:20px;}
    .navlinks, .nav > .cta-btn{display:none;}
    .navToggle{display:flex;}
    .form-card{padding: 32px; box-shadow: 12px 12px 0 var(--turquoise-500);}
  }

  @media (max-width:640px){
    .wrap{padding: 0 20px;}
    section{padding:72px 0;}
    .about{padding:64px 0;}
    .hero{padding: 80px 0 60px;}
    .hero h1{font-size: 2.6rem;}
    .clusters{grid-template-columns:1fr;}
    .cluster.primary, .cluster.consulting{grid-column:span 1;}
    .cluster.consulting ul{grid-template-columns:1fr;}
    .contact h2{font-size: 2.6rem;}
    .contact-fish{width:300px; right:-105px; bottom:-65px; opacity:.06;}
    .contact-list li{align-items:flex-start;}
    .contact-list .k{min-width:74px;}
    .contact-list .email-row a{font-size:1.15rem;}
    .footer-inner{flex-direction: column; text-align: center;}
    .footer-copy{text-align: center;}
    .meta-row{gap: 24px; padding: 24px;}
    .track{padding:32px;}
  }

/* Srovnani vysky nadpisu karet, aby odrazky zacinaly ve stejne linii.
   Uplatni se jen ve 4sloupcovem rozlozeni, kde se kratsi karty zalamuji. */
@media (min-width:1025px){
  .cluster:not(.consulting) h3{min-height:3.2em;}
}