.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: var(--nav-height);
  padding: 0 var(--page-pad);
  color: var(--paper);
  background: linear-gradient(to bottom, rgba(8, 10, 9, 0.72), transparent);
  backdrop-filter: blur(0);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
}

.navbar.is-scrolled {
  background: var(--glass);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-light);
}

.navbar .logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.navbar .logo img {
  height: 2rem;
  width: auto;
  object-fit: contain;
  opacity: 0.92;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.navbar .logo:hover img {
  opacity: 1;
  transform: translateY(-1px);
}

.navbar .nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.navbar .nav-links a {
  position: relative;
  color: rgba(241, 243, 242, 0.86);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.3s var(--ease);
}

.navbar .nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.navbar .nav-links a:hover,
.navbar .nav-links a:focus-visible {
  color: var(--paper);
}

.navbar .nav-links a:hover::after,
.navbar .nav-links a:focus-visible::after {
  transform: scaleX(1);
}

@media (max-width: 640px) {
  .navbar {
    flex-direction: column;
    justify-content: center;
    height: auto;
    padding: 0.9rem var(--page-pad) 1rem;
    gap: 0.65rem;
  }

  .navbar .logo img {
    height: 1.65rem;
  }

  .navbar .nav-links {
    gap: 1.1rem;
  }

  .navbar .nav-links a {
    font-size: 0.75rem;
  }
}