:root {
  color-scheme: dark;
  --bg: #020806;
  --panel: #091512;
  --panel-soft: #07120f;
  --text: #f5fbf8;
  --muted: #9dafaa;
  --line: rgba(91,255,204,.14);
  --brand: #20e2b0;
  --brand-strong: #39efc0;
  --ok: #20e2b0;
  --warning: #ffd27a;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% -10%, rgba(32, 226, 176, 0.12), transparent 34rem),
    radial-gradient(circle at 100% 20%, rgba(0, 173, 130, 0.08), transparent 30rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--brand-strong); }
a:hover { color: #8affdf; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(2, 8, 6, 0.92);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.85rem;
  font-size: 0.92rem;
}

.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }

main {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 4.5rem 0 5rem;
}

.wide { width: min(1120px, calc(100% - 2rem)); }

.hero {
  min-height: 58vh;
  display: grid;
  align-content: center;
  padding: 4rem 0 5rem;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--ok);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.025em; }
h1 { max-width: 18ch; margin: 0; font-size: clamp(2.4rem, 7vw, 5rem); }
h2 { margin-top: 2.7rem; font-size: clamp(1.45rem, 4vw, 2rem); }
h3 { margin-top: 1.8rem; }

.lead {
  max-width: 68ch;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.3vw, 1.25rem);
}

.actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 1.8rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.7rem 1.05rem;
  border: 1px solid var(--brand);
  border-radius: 0.8rem;
  background: var(--brand);
  color: #04110e;
  font-weight: 800;
  text-decoration: none;
}

.button:hover { background: var(--brand-strong); color: #04110e; }
.button.secondary { background: transparent; color: var(--text); }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.card, .notice {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: linear-gradient(145deg, rgba(9, 21, 18, 0.94), rgba(7, 18, 15, 0.9));
  padding: 1.35rem;
}

.card h2, .card h3 { margin-top: 0; }
.card p:last-child, .notice p:last-child { margin-bottom: 0; }

.notice { border-left: 0.35rem solid var(--warning); }
.notice.ok { border-left-color: var(--ok); }

.meta {
  margin: 1.1rem 0 2.2rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: rgba(9, 21, 18, 0.72);
  color: var(--muted);
}

.meta strong { color: var(--text); }
li + li { margin-top: 0.4rem; }

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.footer-inner {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 0.9rem; }

code {
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--panel);
  padding: 0.08rem 0.35rem;
}

@media (max-width: 720px) {
  .site-header { position: static; }
  .nav { align-items: flex-start; flex-direction: column; padding: 1rem 0; }
  .nav-links { justify-content: flex-start; }
  .grid { grid-template-columns: 1fr; }
  main { padding-top: 3rem; }
  .hero { min-height: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* V30 CZ / EN / DE switch */
.language-switch{display:inline-flex;gap:4px;padding:3px;border:1px solid rgba(255,255,255,.10);border-radius:10px;background:rgba(255,255,255,.03);margin-left:auto}
.language-switch a{min-width:30px;height:28px;padding:0 7px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;color:#8fa19c;text-decoration:none;font-size:10px;font-weight:850}
.language-switch a.active{background:#2ce6bd;color:#04110e}
@media(max-width:760px){.language-switch{margin:8px 0 0}.nav{flex-wrap:wrap}.nav-links{order:3;width:100%}}