/* Top navigation bar with smooth-scroll anchors. */

.navbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

/* After scrolling past the hero, give the bar a solid dark surface. */
.navbar.is-scrolled {
  background: rgba(23, 25, 27, 0.92);
  border-bottom-color: var(--color-border);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  height: 4rem;
}

.navbar__brand {
  display: flex;
  align-items: center;
  line-height: 0;
}

.navbar__brand img {
  display: block;
  height: 3.30rem;
  width: auto;
}

@media (min-width: 48rem) {
  .navbar__inner {
    max-width: none;
    padding: 0 var(--space-5);
  }
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  list-style: none;
}

.navbar__links a {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: color 0.15s var(--ease);
}

.navbar__links a:hover {
  color: var(--color-accent-ink);
  text-decoration: none;
}

.navbar__toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  margin-left: auto;
  color: var(--color-text);
  line-height: 0;
}

.navbar__toggle img {
  display: block;
  width: 1.5rem;
  height: 1.5rem;
}

@media (max-width: 48rem) {
  .navbar__toggle {
    display: block;
  }

  .navbar__links {
    position: absolute;
    top: 4rem;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-1) var(--space-3);
    display: none;
  }

  .navbar__links.is-open {
    display: flex;
  }

  .navbar__links li {
    width: 100%;
  }

  .navbar__links a {
    display: block;
    padding: var(--space-2) 0;
    font-size: var(--fs-base);
    border-bottom: 1px solid var(--color-border);
  }

  .navbar__links li:last-child a {
    border-bottom: none;
  }
}