nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 28px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.4s ease, padding 0.4s ease;
}

nav.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  padding: 18px 60px;
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.nav-logo-img {
  height: 32px;
  width: auto;
  display: block;
  transform: scale(1.6);
  transform-origin: left center;
}

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  transition: color 0.3s;
}

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

.nav-cta {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--white);
  padding: 10px 24px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-main);
  font-weight: 500;
  cursor: none;
  transition: border-color 0.3s, background 0.3s;
}

.nav-cta:hover {
  border-color: var(--blue);
  background: var(--blue-glow);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: none;
  padding: 4px;
}

.mobile-menu-btn span {
  width: 22px;
  height: 1px;
  background: rgba(255, 255, 255, 0.7);
  display: block;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Mobile menu open — nav itself becomes fullscreen to avoid backdrop-filter containing block bug */
nav.open {
  bottom: 0;
  background: rgba(8, 10, 18, 0.97);
  backdrop-filter: none !important;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 40px;
  border-bottom: none;
}

nav.open .nav-logo {
  position: absolute;
  top: 28px;
  left: 32px;
}

nav.open .mobile-menu-btn {
  position: absolute;
  top: 28px;
  right: 32px;
}

nav.open .nav-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: static;
  background: none;
  backdrop-filter: none;
  padding: 0;
}

nav.open .nav-links a {
  font-size: 22px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.55);
  padding: 12px 0;
}

nav.open .nav-links a:hover {
  color: var(--white);
}

nav.open .mobile-menu-btn span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}
nav.open .mobile-menu-btn span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
nav.open .mobile-menu-btn span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}