/* ════════════════════════════════════════════════
   NAV
════════════════════════════════════════════════ */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 600;
  transition: background .35s, border-color .35s;
  border-bottom: 1px solid transparent;
}

#nav.lit {
  background: rgba(244,242,238,.93);
  backdrop-filter: blur(18px);
  border-color: var(--rule);
}
#nav.drk {
  background: rgba(7,7,14,.92);
  backdrop-filter: blur(18px);
  border-color: var(--wire);
}

.nav-row {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--ink);
  transition: color .25s;
}
#nav.drk .nav-logo { color: rgba(255,255,255,.88); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
  transition: color .2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--arc);
  box-shadow: 0 0 4px var(--arc);
  transition: width .28s var(--ease);
}
.nav-links a:hover,
.nav-links a.act { color: var(--ink); }
.nav-links a:hover::after,
.nav-links a.act::after { width: 100%; }

#nav.drk .nav-links a { color: rgba(255,255,255,.55); }
#nav.drk .nav-links a:hover,
#nav.drk .nav-links a.act { color: rgba(255,255,255,.92); }

.nav-cta {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--arc) !important;
  border: 1px solid rgba(0,229,255,.3);
  padding: 6px 15px;
  border-radius: 2px;
  transition: background .2s, box-shadow .2s !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover {
  background: var(--arc-dim);
  box-shadow: 0 0 14px var(--arc-glo);
}

/* ── Burger ── */
.burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}
.burger span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--ink);
  border-radius: 99px;
  transition: .28s;
}
#nav.drk .burger span { background: rgba(255,255,255,.75); }

/* ── Mobile menu ── */
.mob {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  z-index: 590;
  background: rgba(244,242,238,.97);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--rule);
  padding: 10px 40px 20px;
  flex-direction: column;
}
.mob.open { display: flex; }
.mob a {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 11px 0;
  border-bottom: 1px solid var(--rule);
  transition: color .2s;
}
.mob a:hover { color: var(--arc); }

/* ── Nav right & language switcher ── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.lang-sw { display: flex; gap: 1px; }

.lang-btn {
  font-family: var(--mono);
  font-size: 0.52rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 4px 9px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-4);
  cursor: pointer;
  transition: all .2s;
  border-radius: 2px;
  text-decoration: none;
  display: inline-block;
}
.lang-btn.active,
.lang-btn:hover {
  border-color: var(--arc);
  color: var(--arc);
  background: var(--arc-dim);
}
#nav.drk .lang-btn { color: rgba(255,255,255,.50); }
#nav.drk .lang-btn.active,
#nav.drk .lang-btn:hover { color: var(--arc); }

.mob-lang {
  display: flex;
  gap: 6px;
  padding: 12px 0;
}