.site-header {
  position: fixed;
  top: 1.25rem;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 0 1rem;
  pointer-events: none;
}

.pill-nav {
  pointer-events: auto;
  max-width: 100%;
}

.pill-nav__toggle {
  display: none;
}

.pill-nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  box-shadow:
    0 4px 24px var(--shadow-soft),
    0 1px 3px rgba(44, 58, 74, 0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.pill-nav__link {
  display: block;
  padding: 0.55rem 1.1rem;
  font-family: "Cormorant Garamond", serif;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-secondary);
  white-space: nowrap;
  border-radius: 999px;
  transition:
    color 0.25s ease,
    background-color 0.25s ease;
}

.pill-nav__link:hover {
  color: var(--text-primary);
  background-color: var(--surface-muted);
}

.pill-nav__link.is-active {
  color: var(--hero-bg);
  background-color: var(--text-primary);
}

.pill-nav__link.is-active:hover {
  color: var(--hero-bg);
  background-color: var(--text-secondary);
}

@media (max-width: 640px) {
  .site-header {
    top: 0.75rem;
    justify-content: flex-start;
    padding: 0 0.75rem;
  }

  .pill-nav {
    width: 3rem;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    box-shadow:
      0 4px 24px var(--shadow-soft),
      0 1px 3px rgba(44, 58, 74, 0.04);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    overflow: hidden;
    transition:
      width 0.3s ease,
      border-radius 0.3s ease;
  }

  .pill-nav.is-open {
    width: max-content;
    max-width: calc(100vw - 1.5rem);
    border-radius: 1.25rem;
  }

  .pill-nav__toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    width: 3rem;
    height: 3rem;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    flex-shrink: 0;
  }

  .pill-nav__toggle-bar {
    display: block;
    width: 1.1rem;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 1px;
    transition:
      transform 0.25s ease,
      opacity 0.25s ease;
  }

  .pill-nav.is-open .pill-nav__toggle-bar:nth-child(1) {
    transform: translateY(0.42rem) rotate(45deg);
  }

  .pill-nav.is-open .pill-nav__toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .pill-nav.is-open .pill-nav__toggle-bar:nth-child(3) {
    transform: translateY(-0.42rem) rotate(-45deg);
  }

  .pill-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    width: 100%;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition:
      max-height 0.3s ease,
      opacity 0.25s ease,
      padding 0.3s ease;
  }

  .pill-nav.is-open .pill-nav__list {
    max-height: 24rem;
    opacity: 1;
    padding: 0 0.5rem 0.65rem;
  }

  .pill-nav__link {
    padding: 0.65rem 1rem;
    font-size: 0.88rem;
    letter-spacing: 0.05em;
    text-align: left;
    border-radius: 0.65rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pill-nav,
  .pill-nav__list,
  .pill-nav__toggle-bar {
    transition: none;
  }
}