#navbar {
  height: var(--nav-height);
  left: 0;
  position: fixed;
  top: 0;
  transition: all var(--duration-base) var(--ease-out);
  width: 100%;
  z-index: var(--z-nav);
}

#navbar.scrolled {
  backdrop-filter: blur(20px);
  background: rgba(2, 4, 8, 0.9);
  border-bottom: var(--border-subtle);
}

.nav-container {
  align-items: center;
  display: flex;
  gap: var(--space-md);
  height: 100%;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
}

.logo-accent {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-bracket {
  color: var(--cyan);
  opacity: 0.5;
}

.nav-links {
  align-items: center;
  display: none;
  gap: var(--space-md);
}

.nav-link {
  color: var(--gray-300);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  position: relative;
}

.nav-link::after {
  background: var(--grad-text);
  bottom: -0.35rem;
  content: "";
  height: 1px;
  left: 0;
  position: absolute;
  transition: width var(--duration-base) var(--ease-out);
  width: 0;
}

.nav-link:hover,
.nav-link.active-link {
  color: var(--cyan);
}

.nav-link:hover::after,
.nav-link.active-link::after {
  width: 100%;
}

.btn-nav-cta {
  border: var(--border-glow);
  color: var(--cyan);
  display: none;
  font-size: var(--size-small);
}

.btn-nav-cta:hover {
  background: var(--grad-brand);
  box-shadow: var(--glow-cyan-sm);
  color: var(--white);
}

.arrow-icon {
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn-nav-cta:hover .arrow-icon {
  transform: translateX(4px);
}

.nav-hamburger {
  background: transparent;
  border: none;
  display: grid;
  gap: 5px;
  width: 34px;
}

.nav-hamburger span {
  background: var(--cyan);
  border-radius: var(--radius-pill);
  display: block;
  height: 2px;
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-base) var(--ease-out);
  width: 100%;
}

.nav-hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  backdrop-filter: blur(20px);
  background: rgba(2, 4, 8, 0.97);
  display: grid;
  gap: var(--space-sm);
  max-height: 0;
  overflow: hidden;
  padding-inline: var(--container-pad);
  transition: max-height var(--duration-slow) var(--ease-out), padding-block var(--duration-base) var(--ease-out);
}

.nav-mobile.open {
  max-height: 80vh;
  padding-block: var(--space-md);
}

.nav-mobile .nav-link {
  font-size: var(--size-h3);
}