/* ============================================================
   KunaBox 2.0 — Navigation: fixed bar + mobile menu + progress bar
   ============================================================ */

/* ── Fixed top nav ─────────────────────────────────────────── */
nav.kb-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 16px var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, rgba(10, 8, 20, 0.85), transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ── Brand logo area ───────────────────────────────────────── */
.kb-nav__brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  cursor: pointer;
}

.kb-nav__brand-name {
  font-family: var(--font-grotesk);
  font-weight: 600;
  font-size: 19px;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

/* ── Desktop nav links ─────────────────────────────────────── */
.kb-nav__links {
  display: flex;
  gap: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

.kb-nav__links a {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s;
}

/* ── Language switcher ─────────────────────────────────────── */
.kb-nav__lang {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 2px;
}

.kb-nav__lang button {
  padding: 5px 11px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  transition: all 0.3s;
}

/* ── Nav CTA button ────────────────────────────────────────── */
.kb-nav__cta {
  background: var(--color-accent);
  color: var(--color-text);
  border-radius: var(--radius-md);
  padding: 10px 18px;
  font-family: var(--font-grotesk);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.25s;
  box-shadow: 0 4px 18px rgba(124, 58, 237, 0.35);
}

/* ── Burger button (hidden on desktop) ─────────────────────── */
.kb-nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.kb-nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

/* ── Mobile menu overlay ───────────────────────────────────── */
.kb-mobile-menu {
  display: none; /* toggled by JS */
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  z-index: var(--z-menu);
  background: rgba(8, 7, 12, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(124, 58, 237, 0.2);
  flex-direction: column;
  padding: 1.4rem 22px;
  gap: 0;
}

.kb-mobile-menu a,
.kb-mobile-menu [data-act] {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(124, 58, 237, 0.1);
  cursor: pointer;
}

/* ── Scroll progress bar ───────────────────────────────────── */
.kb-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  z-index: var(--z-progress);
  background: linear-gradient(to right, var(--color-accent), var(--color-teal));
  box-shadow: var(--shadow-teal);
  transition: width 0.1s;
}