/* ═══════════════════
   NAVIGATION
   ═══════════════════ */

nav {
  position: fixed; top: 0; width: 100%;
  z-index: 100;
  padding: 1.2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(2, 8, 18, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s;
}

nav.scrolled { padding: 0.8rem 3rem; }

.nav-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--neon);
  letter-spacing: 3px;
  text-decoration: none;
  text-shadow: var(--glow-cyan);
}
.nav-logo span { color: #fff; }

.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 1.5px;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::before {
  content: '> ';
  color: var(--neon);
  opacity: 0;
  transition: opacity var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--neon); }
.nav-links a:hover::before,
.nav-links a.active::before { opacity: 1; }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 2px;
  padding: 0.5rem 1.2rem;
  color: var(--neon);
  border: 1px solid var(--neon);
  text-decoration: none;
  transition: all var(--transition);
  background: transparent;
}
.nav-cta:hover {
  background: var(--neon);
  color: var(--bg);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: none;
  background: none;
  border: none;
  padding: 4px;
}
.nav-hamburger span {
  width: 24px; height: 1.5px;
  background: var(--neon);
  transition: all 0.3s;
}

@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  /* Mobile menu open state */
  nav.mobile-open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: rgba(2, 8, 18, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem 2rem;
    gap: 1.2rem;
    z-index: 99;
  }
  nav.mobile-open .nav-links a {
    font-size: 0.9rem;
    padding: 0.4rem 0;
  }
  nav.mobile-open .nav-cta {
    display: block;
    position: fixed;
    top: 60px; left: 0; right: 0;
    display: none; /* hidden — links suffice */
  }
  /* Hamburger → X animation */
  nav.mobile-open .nav-hamburger span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  nav.mobile-open .nav-hamburger span:nth-child(2) { opacity: 0; }
  nav.mobile-open .nav-hamburger span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
}