/* ============================================================
   Global site navigation (logo + hamburger menu)
   Transparent overlay — floats over page content like the map
   homepage. Does NOT add a body padding bar (that caused a
   white strip above coloured page backgrounds).
   ============================================================ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 0;
  overflow: visible;
  pointer-events: none;
  background: transparent;
}

.site-nav-logo-link {
  position: fixed;
  top: 28px;
  left: 38px;
  display: inline-block;
  line-height: 0;
  text-decoration: none;
  pointer-events: auto;
}

.site-nav-logo {
  height: 48px;
  width: auto;
  display: block;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.12));
}

.site-nav-right {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
}

.site-nav-submit {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: 999px;
  background: #8b00d1;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 2px 12px rgba(139, 0, 209, 0.25);
  transition: background 0.15s ease, transform 0.15s ease;
}

.site-nav-submit:hover {
  background: #7200ad;
  transform: scale(1.02);
}

.site-nav-menu {
  position: relative;
}

.site-nav-menu-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  color: #333;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  transition: background 0.2s ease, transform 0.2s ease;
}

.site-nav-menu-btn:hover {
  background: #f0f0f0;
  transform: scale(1.05);
}

.site-nav-menu-list {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  margin: 0;
  padding: 8px;
  list-style: none;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  display: none;
}

.site-nav-menu.open .site-nav-menu-list {
  display: block;
}

.site-nav-menu-list li {
  list-style: none;
}

.site-nav-menu-link {
  display: block;
  padding: 10px 14px;
  color: #222;
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  transition: background 0.15s ease;
}

.site-nav-menu-link:hover {
  background: #f2f2f2;
}

@media (max-width: 768px) {
  .site-nav-logo-link {
    top: 20px;
    left: 20px;
  }
  .site-nav-right {
    top: 16px;
    right: 16px;
  }
  .site-nav-logo {
    height: 32px;
  }
  .site-nav-menu-btn {
    width: 36px;
    height: 36px;
  }
}