/* ============ NEION — shared design tokens & primitives ============ */
:root {
  --green: #1FD68A;
  --green-soft: #34E29A;
  --green-glow: rgba(31, 214, 138, 0.35);
  --purple: #A855F7;
  --cyan: #22D3EE;
  --pink: #EC4899;
  --ink: #0A0B0E;
  --ink-2: #11141A;
  --ink-3: #181C24;
  --ink-line: #1F2632;
  --paper: #EEF0F4;
  --paper-2: #E3E6EC;
  --paper-3: #D8DCE4;
  --text-d: #F4F6F8;
  --text-d-2: #B5BBC4;
  --text-d-3: #7A828F;
  --text-l: #0A0B0E;
  --text-l-2: #4A5260;
  --text-l-3: #8A93A0;
  --r: 9999px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  color: var(--text-l);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }

/* NAV */
.nav-wrap { position: fixed; top: 0; left: 0; right: 0; z-index: 50; pointer-events: none; }
.nav {
  pointer-events: auto;
  max-width: 1480px; margin: 0 auto;
  padding: 22px 40px;
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: center; gap: 24px;
}
.logo {
  display: inline-flex; align-items: center; gap: 8px; color: #fff; width: fit-content;
  /* frosted glass podklad — logo se nekříží s obsahem, který projíždí pod
     fixní navigací (stejný recept jako .nav-links / .lang-btn) */
  background: rgba(20, 22, 28, 0.5);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--r); padding: 6px 16px 6px 10px;
}
.logo-img { height: 48px; width: auto; display: block; filter: drop-shadow(0 1px 4px rgba(10, 11, 14, 0.55)) drop-shadow(0 0 16px rgba(168, 85, 247, 0.25)); }
.nav-links {
  display: flex; gap: 8px; align-items: center;
  background: rgba(20, 22, 28, 0.5);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--r); padding: 6px;
}
.nav-links a {
  color: rgba(255,255,255,0.75);
  font-size: 14.5px; font-weight: 500;
  padding: 10px 20px; border-radius: var(--r);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.05); }
.nav-links a.active { color: #fff; background: rgba(255,255,255,0.08); }

.nav-cta { display: flex; justify-content: flex-end; gap: 12px; align-items: center; }

/* language switcher — separate circular pill sitting next to nav-links */
.nav-middle { display: flex; align-items: center; gap: 12px; }
.lang-switch { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: rgba(20, 22, 28, 0.5);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  padding: 0; overflow: hidden;
  transition: border-color .2s, background .2s, transform .15s, box-shadow .2s;
}
.lang-btn:hover { border-color: rgba(31,214,138,0.45); background: rgba(20, 22, 28, 0.7); transform: translateY(-1px); }
.lang-btn[aria-expanded="true"] { border-color: var(--green); box-shadow: 0 0 0 4px rgba(31,214,138,0.15); }
.lang-flag-current { width: 34px; height: 34px; display: block; }
.lang-menu {
  position: absolute; top: calc(100% + 10px); right: 0;
  min-width: 200px;
  background: linear-gradient(180deg, #14181F 0%, #0A0D12 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: 6px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5), 0 0 0 1px rgba(31,214,138,0.06);
  opacity: 0; transform: translateY(-6px) scale(0.98);
  pointer-events: none;
  transition: opacity .15s, transform .15s;
  z-index: 60;
}
.lang-switch[data-open="true"] .lang-menu { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.lang-menu button {
  display: flex; align-items: center; gap: 12px;
  width: 100%;
  padding: 10px 14px;
  border-radius: 9px;
  color: rgba(255,255,255,0.85);
  font-size: 14px; font-weight: 500;
  text-align: left;
  transition: background .2s, color .2s;
}
.lang-menu button:hover { background: rgba(255,255,255,0.05); color: #fff; }
.lang-menu button[aria-current="true"] { color: var(--green); }
.lang-menu .code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em; color: var(--text-d-3);
  margin-left: auto;
}
.lang-menu button[aria-current="true"] .code { color: var(--green); }
.lang-menu .flag {
  width: 22px; height: 22px;
  display: inline-block;
  flex: 0 0 22px;
  border-radius: 50%;
}
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14.5px; font-weight: 600; letter-spacing: 0.02em;
  padding: 14px 26px; border-radius: var(--r);
  white-space: nowrap;
  transition: transform .15s ease, box-shadow .2s, background .2s, color .2s;
}
.btn-ghost {
  /* sjednoceno s .nav-links / .lang-btn glassmorphic — tmavý semitransparent
     drží pill viditelný na světlých sekcích, kde topbar překrývá obsah */
  background: rgba(20, 22, 28, 0.5);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(31, 214, 138, 0.35);
  color: var(--green);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 4px 16px -8px rgba(31,214,138,0.25);
}
.btn-ghost:hover {
  background: rgba(20, 22, 28, 0.7);
  border-color: rgba(31, 214, 138, 0.6);
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--green); color: #062417;
  text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700;
  box-shadow: 0 0 0 0 var(--green-glow), 0 10px 30px -10px rgba(31, 214, 138, 0.6);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 0 4px var(--green-glow), 0 14px 36px -10px rgba(31, 214, 138, 0.7); }
.btn-primary .arr { transition: transform .2s; }
.btn-primary:hover .arr { transform: translateX(4px); }

/* shared eyebrow / badge */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-l-2);
  background: rgba(255,255,255,0.6);
  border: 1px solid rgba(10, 11, 14, 0.06);
  padding: 8px 14px; border-radius: var(--r);
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px rgba(31, 214, 138, 0.2); }
.eyebrow.on-dark {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
}

/* short dark hero used on inner pages */
.subhero {
  position: relative;
  background: var(--ink);
  color: var(--text-d);
  overflow: hidden;
  padding: 200px 40px 140px;
  text-align: center;
}
.subhero-bg { position: absolute; inset: 0; z-index: 0; opacity: 0.85; }
.subhero-bg svg { width: 100%; height: 100%; display: block; }
.subhero-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, #000 30%, transparent 80%);
}
.subhero-inner { position: relative; z-index: 2; max-width: 1180px; margin: 0 auto; }
.subhero h1 {
  margin: 28px 0 22px;
  font-size: clamp(48px, 7vw, 104px);
  line-height: 0.98; letter-spacing: -0.035em; font-weight: 700;
  color: #F1F4F7;
}
.subhero p {
  max-width: 620px; margin: 0 auto;
  font-size: 17px; line-height: 1.55;
  color: rgba(255,255,255,0.55);
}

/* sections */
.section { position: relative; padding: 140px 40px; }
.section-inner { max-width: 1480px; margin: 0 auto; position: relative; z-index: 1; }
.grid-bg {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(10, 11, 14, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 11, 14, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, #000 30%, transparent 80%);
}

/* footer (shared) */
.footer-wrap { padding: 0 40px 40px; }
.footer {
  max-width: 1480px; margin: 0 auto;
  background: linear-gradient(180deg, #0E1218 0%, #080A0E 100%);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 28px;
  padding: 56px 64px;
  color: var(--text-d);
  position: relative; overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  mask-image: linear-gradient(180deg, #000 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 100%);
}
.footer-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 56px; }
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 14.5px; line-height: 1.6; margin: 22px 0 24px; max-width: 380px; }
.subscribe {
  display: flex; gap: 8px; max-width: 380px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r); padding: 6px;
}
.subscribe input { flex: 1; background: transparent; border: 0; outline: 0; color: #fff; font: inherit; font-size: 14px; padding: 10px 16px; }
.subscribe input::placeholder { color: rgba(255,255,255,0.4); }
.subscribe button { background: var(--green); color: #062417; font-weight: 700; font-size: 14px; padding: 10px 22px; border-radius: var(--r); transition: background .2s; }
.subscribe button:hover { background: var(--green-soft); }
.col h4 { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255,255,255,0.5); margin: 8px 0 22px; font-weight: 500; }
.col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.col a { color: rgba(255,255,255,0.85); font-size: 15px; transition: color .2s; }
.col a:hover { color: var(--green); }
.footer-bottom {
  position: relative; z-index: 1;
  margin-top: 56px; padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: rgba(255,255,255,0.4);
  font-family: 'JetBrains Mono', monospace; letter-spacing: 0.06em;
}
.footer-bottom .status { display: inline-flex; align-items: center; gap: 8px; }
.footer-bottom .status .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); }

@media (max-width: 1100px) {
  .nav-links { display: none; }
  .nav { grid-template-columns: 1fr auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 680px) {
  .section { padding: 80px 20px; }
  .subhero { padding: 140px 20px 80px; }
  .footer-wrap { padding: 0 16px 24px; }
  .footer { padding: 36px 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav { padding: 16px 20px; }
}