/* Three independent disclosures and a direct contact link. */
header .site-nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-nav-group {
  position: static;
}
.section-nav-toggle,
.nav-contact {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 10px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font: 11px/1.5 var(--mono);
  white-space: nowrap;
}
.section-nav-toggle::after {
  content: '';
  width: 5px;
  height: 5px;
  margin-left: 9px;
  margin-top: -3px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  transition: transform 420ms ease;
}
.section-nav-toggle[aria-expanded='true'] {
  color: var(--fg);
}
.section-nav-group:has(a[aria-current='location']) > button {
  color: var(--purple);
}
.section-nav-toggle[aria-expanded='true']::after {
  transform: rotate(225deg);
}
.section-nav-menu[hidden] {
  display: none;
}
.section-nav-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 248px;
  max-width: calc(100vw - 24px);
  max-height: calc(100dvh - 150px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 8px;
  border: 1px solid #bd93f940;
  border-radius: 10px;
  background: var(--panel);
  box-shadow: 0 16px 35px #0005;
}
.section-nav-menu a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 42px;
  padding: 11px 10px;
  border-radius: 5px;
  font: 12px/1.5 var(--sans);
  overflow-wrap: anywhere;
}
.section-nav-number {
  flex: 0 0 18px;
  color: var(--muted);
  font: 9px/1.5 var(--mono);
  opacity: 0.65;
}
.section-nav-menu a:is(:hover, :focus-visible) {
  color: var(--fg);
  background: #bd93f90c;
}
.section-nav-menu a[aria-current='location'],
.nav-contact[aria-current='location'] {
  color: var(--purple);
}
.section-nav-menu a[aria-current='location'] {
  background: #bd93f914;
}
.section-nav-menu a[aria-current='location'] .section-nav-number {
  color: var(--purple);
  opacity: 1;
}
@keyframes section-menu-in {
  from {
    transform: translateY(-8px);
  }
  to {
    transform: translateY(0);
  }
}
@media (max-width: 1100px) {
  html {
    scroll-padding-top: 140px;
  }
  header {
    height: auto;
    min-height: 72px;
    flex-wrap: wrap;
    row-gap: 4px;
    padding-block: 10px 4px;
  }
  header .site-nav {
    position: relative;
    order: 3;
    flex-basis: 100%;
    justify-content: center;
    gap: clamp(0px, 2vw, 18px);
  }
  .section-nav-group {
    position: static;
  }
}
@media (max-width: 480px) {
  .section-nav-toggle,
  .nav-contact {
    padding: 8px 5px;
    font-size: 9px;
  }
  .section-nav-toggle::after {
    margin-left: 6px;
    width: 4px;
    height: 4px;
  }
  header .site-nav {
    gap: 2px;
    justify-content: space-between;
  }
}
@media (prefers-reduced-motion: reduce) {
  .section-nav-menu {
    animation: none;
  }
  .section-nav-toggle::after {
    transition: none;
  }
}

/* Keep hit testing still; only the inner content slides on its own layer. */
header.nav-open {
  backdrop-filter: none;
  background: var(--bg);
}
.section-nav-toggle:hover {
  translate: none;
}
.section-nav-menu.is-opening {
  animation: section-menu-fade 560ms ease;
  will-change: opacity;
}
.section-nav-menu.is-opening .section-nav-items {
  animation: section-menu-in 560ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}
@keyframes section-menu-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .section-nav-menu.is-opening,
  .section-nav-menu.is-opening .section-nav-items {
    animation: none;
    will-change: auto;
  }
}