/* VSR Mobile Burger Nav — CSS snippet
 * Scope: frontend header only. Does not change desktop nav.
 * Safe: only overrides mobile nav visibility when burger is present.
 */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: #121215;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: #f0f0f0;
  border-radius: 1px;
  transition: transform 160ms ease, opacity 160ms ease;
}
header.is-nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
header.is-nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}
header.is-nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-flex;
  }
  header .header-inner {
    position: relative;
  }
  /* Override inline page CSS that hides nav on small screens */
  header .header-inner > nav {
    display: none !important;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px;
    background: rgba(18, 18, 21, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
    z-index: 120;
  }
  header .header-inner > nav a {
    padding: 12px 14px;
    font-size: 15px;
  }
  header.is-nav-open .header-inner > nav {
    display: flex !important;
  }
}