/* Subtle sitewide icon navigation rail (index.html + map.html + Next app styles can mirror this) */

.ps-site-nav {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.ps-site-nav__btn {
  pointer-events: auto;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: grid;
  place-items: center;

  background: rgba(15, 15, 18, 0.26);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);

  opacity: 0.55;
  transform: translateY(0);
  transition: opacity 140ms ease, transform 140ms ease, background 140ms ease, border-color 140ms ease;
  text-decoration: none;
  outline: none;
}

.ps-site-nav__btn:hover,
.ps-site-nav__btn:focus-visible {
  opacity: 0.95;
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.28);
}

.ps-site-nav__btn[data-active="true"] {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.34);
}

.ps-site-nav__icon {
  width: 18px;
  height: 18px;
  display: block;
}

.ps-site-nav__icon path,
.ps-site-nav__icon line,
.ps-site-nav__icon polyline,
.ps-site-nav__icon circle {
  stroke: rgba(255, 255, 255, 0.88);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (prefers-reduced-motion: reduce) {
  .ps-site-nav__btn {
    transition: none;
  }
}

/* Mobile: Horizontal navigation bar at top */
@media (max-width: 768px) {
  .ps-site-nav {
    position: static;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem 1.25rem;
    margin: 0;
    margin-bottom: 0;
  }

  .ps-site-nav__btn {
    width: 32px;
    height: 32px;
  }

  .ps-site-nav__icon {
    width: 16px;
    height: 16px;
  }
}