/* Unified Creature Prompt site navigation (Prompts · Gallery · Atlas) */
.site-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.site-header__inner {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__brand {
  font-family: 'Google Sans Flex', system-ui, sans-serif;
  font-size: 2.1rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  line-height: 1.1;
}

.site-header__brand:hover {
  color: #fff;
  opacity: 0.92;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
}

.site-nav__link {
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.site-nav__link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.site-nav__link.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.site-subnav {
  max-width: 80rem;
  margin: 0.75rem auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.site-subnav__link {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.site-subnav__link:hover,
.site-subnav__link.is-active {
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.06);
}

/* Atlas app shell variant (sticky, compact brand) */
.site-header--atlas {
  position: sticky;
  top: 0;
  z-index: 50;
  margin-bottom: 0;
  padding: 0.75rem 1.5rem 0;
  background: rgba(8, 8, 12, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header--atlas .site-header__inner {
  max-width: none;
}

.site-header--atlas .site-header__brand {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
}

.site-header--atlas .site-subnav {
  max-width: none;
  margin-top: 0.65rem;
  padding-bottom: 0.65rem;
}

.site-header__sim-badge {
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: rgba(255, 180, 80, 0.2);
  color: #ffb450;
  border: 1px solid rgba(255, 180, 80, 0.35);
  margin-left: 0.35rem;
}