.topbar nav {
  gap: 30px;
}

.topbar nav a {
  position: relative;
  padding: 10px 0 9px;
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .055em;
  text-transform: uppercase;
  transition: color .2s ease;
}

.topbar nav a::after {
  content: "";
  position: absolute;
  right: 100%;
  bottom: 2px;
  left: 0;
  height: 3px;
  background: var(--copper);
  transition: right .22s ease;
}

.topbar nav a:hover,
.topbar nav a:focus-visible {
  color: var(--copper);
}

.topbar nav a:hover::after,
.topbar nav a:focus-visible::after {
  right: 0;
}

.nav-cta {
  border: 2px solid var(--copper);
  padding: 13px 20px;
  color: #fff;
  font-size: .95rem;
  font-weight: 800;
  letter-spacing: .025em;
  transition: background .2s ease, color .2s ease;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: var(--copper);
  color: var(--navy);
}

@media (max-width: 900px) {
  .topbar.open nav a {
    font-size: 1.05rem;
  }
}