/* Site section navigation (injected by nav.js into #Banner) */
.banner-actions {
  margin-left: auto;
  order: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  position: relative;
}
.banner-actions .theme-toggle {
  margin-left: 0;
}

/* Former subtitle spot: full-width row under H1 */
.site-nav {
  position: relative;
  flex-basis: 100%;
  order: 3;
  margin: 4px 0 0;
  flex-shrink: 0;
}
.site-nav-btn {
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(0, 0, 0, 0.15);
  color: inherit;
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: inherit;
  line-height: 1.2;
}
.site-nav-btn:hover,
.site-nav-btn:focus {
  background: rgba(255, 255, 255, 0.18);
  outline: none;
}
.site-nav-btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.7);
  outline-offset: 2px;
}
.site-nav-btn[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.22);
}

/*
 * Overlay menu: position:fixed so it escapes #Banner / #Main overflow:hidden
 * (banner itself stays non-scrolling). top/left set by nav.js from the trigger.
 */
.site-nav-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  min-width: 12.5rem;
  margin: 0;
  padding: 6px 0;
  list-style: none;
  background: var(--menu-bg, #1e293b);
  color: var(--text, #e2e8f0);
  border: 1px solid var(--menu-border, #334155);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  z-index: 10000;
}
.site-nav.is-open .site-nav-menu {
  display: block;
}
.site-nav-menu a {
  display: block;
  padding: 8px 14px;
  color: inherit;
  text-decoration: none;
  font-size: 0.9rem;
  white-space: nowrap;
}
.site-nav-menu a:hover,
.site-nav-menu a:focus {
  background: var(--link-hover-bg, rgba(255, 255, 255, 0.08));
  outline: none;
}
.site-nav-menu a:focus-visible {
  outline: 2px solid var(--link, #93c5fd);
  outline-offset: -2px;
}
.site-nav-menu a[aria-current="page"] {
  font-weight: 600;
  background: var(--link-active-bg, rgba(147, 197, 253, 0.16));
}