.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: start;
  padding: 1.1rem var(--gutter);
  color: var(--navy);
  pointer-events: none;
  transition: color 0.5s var(--ease);
}

.header[data-tone="light"] {
  color: var(--cream);
}

.header a {
  pointer-events: auto;
}

.header__logo {
  justify-self: start;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 1.7vw, 1.7rem);
  line-height: 1;
  letter-spacing: -0.015em;
  text-transform: uppercase;
}

.header__tag {
  justify-self: start;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.25vw, 1.2rem);
  line-height: 1.1;
}

.header__nav {
  justify-self: end;
  display: flex;
  gap: clamp(1.4rem, 4vw, 4.5rem);
}

.header__nav a {
  position: relative;
}

.header__nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.2rem;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease);
}

.header__nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

@media (max-width: 767px) {
  .header {
    grid-template-columns: 1fr auto;
  }

  .header__tag {
    display: none;
  }
}