:root {
  --bg: #0e1117;
  --fg: #e6edf3;
  --muted: #9da7b1;
  --accent: #c9a23a;
  --card: #161b22;
  --border: #30363d;
}

/* ===== Reset ===== */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

/* ===== Layout ===== */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

main {
  padding-bottom: 4rem;
}

/* ===== Header ===== */

.header {
  background: linear-gradient(
    180deg,
    #0b1f17 0%,
    #0e1117 100%
  );
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0 1rem;
}

.nav {
  margin-right: 1.5rem; /* symetria względem .container padding */
}

/* Mobile */
@media (max-width: 640px) {
  .nav {
    margin-right: 1.5rem;
  }
}

.logo-mark {
  width: clamp(6rem, 9vw, 8rem);
  height: auto;
  opacity: 0.7;
  filter:
    drop-shadow(0 1px 2px rgba(0,0,0,0.9))
    drop-shadow(0 0 14px rgba(201,162,58,0.35));
}

.nav-offset {
  margin-top: 2.4rem;
}

.nav a {
  margin-left: 1.5rem;
  font-size: 0.9rem;
  color: var(--fg);
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent);
}

/* ===== Divider & Meta ===== */

.divider {
  border-bottom: 1px solid var(--border);
}

.meta {
  margin: 1.5rem auto 3rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ===== Hero ===== */

.hero {
  padding-bottom: 3rem;
}

.product-name {
  font-size: clamp(3.4rem, 6.5vw, 4.8rem);
  font-weight: 600;
  letter-spacing: 0.015em;
  color: var(--accent);
  margin: 0 0 0.6rem;
}

.claim {
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--fg);
  max-width: 720px;
  margin: 0 0 1.4rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 720px;
}

/* ===== Buttons ===== */

.cta {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.7rem 1.4rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--fg);
  text-decoration: none;
  font-size: 0.95rem;
}

.btn:hover {
  border-color: var(--accent);
}

.btn.primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

/* ===== Note ===== */

.note {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ===== Cards ===== */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  margin-top: 2rem;
}

.card h3 {
  margin-top: 0;
}

/* ===== Footer ===== */

.footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}