/* ?? Split Header Dual Button (pip / npm & Foundation / GitHub Hover FX) ?? */
.header-btn-dual {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-color, #cbd5e1);
  border-radius: 5px;
  background: #ffffff;
  padding: 2px 3px;
  font-size: 0.82em;
  font-weight: 600;
  line-height: 1.4;
  vertical-align: middle;
  transition: all 0.15s ease-in-out;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.header-btn-dual:hover {
  border-color: #94a3b8;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.header-btn-dual .dual-link {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  text-decoration: none;
  color: var(--text-main, #334155);
  border-radius: 4px;
  font-size: 0.95em;
  font-weight: 600;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
  cursor: pointer;
}

/* Default / Fallback hover effect */
.header-btn-dual .dual-link:hover {
  background-color: #f1f5f9;
  color: #0f172a;
}

/* Specific Foundation brand blue hover */
.header-btn-dual .dual-link.foundation-link:hover {
  background-color: #2563eb !important;
  color: #ffffff !important;
}

/* Specific GitHub / Repo dark charcoal hover */
.header-btn-dual .dual-link.github-link:hover {
  background-color: #1e293b !important;
  color: #ffffff !important;
}

/* Specific pip python-blue hover */
.header-btn-dual .dual-link.pip-link:hover {
  background-color: #0284c7 !important;
  color: #ffffff !important;
}

/* Specific npm brand-red hover */
.header-btn-dual .dual-link.npm-link:hover {
  background-color: #cb3837 !important;
  color: #ffffff !important;
}

.header-btn-dual .dual-link:active {
  transform: scale(0.97);
}

.header-btn-dual .dual-divider {
  color: var(--text-subtle, #cbd5e1);
  font-size: 0.85em;
  padding: 0 3px;
  user-select: none;
}


/* Single Registry Button Colors */
.header-btn.npm-btn:hover {
  background-color: #cb3837 !important;
  border-color: #cb3837 !important;
  color: #ffffff !important;
}

.header-btn.pypi-btn:hover {
  background-color: #2563eb !important;
  border-color: #2563eb !important;
  color: #ffffff !important;
}


/* ── Scoped Element Loading Overlay (AMEVA Engineering Standard) ────────── */
.ameva-loading-container {
  position: relative !important;
  min-height: 80px;
}

.ameva-loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(2px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  z-index: 50;
  border-radius: inherit;
  transition: opacity 0.2s ease;
  pointer-events: all;
}

.dark-mode .ameva-loading-overlay {
  background: rgba(15, 23, 42, 0.85);
}

.ameva-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(0, 68, 153, 0.15);
  border-top-color: #004499;
  border-right-color: #004499;
  border-radius: 50%;
  animation: ameva-spin 0.75s linear infinite;
}

.ameva-loading-text {
  font-size: 0.82em;
  font-weight: 600;
  color: var(--text-main, #334155);
  letter-spacing: 0.3px;
  font-family: var(--font-mono, monospace);
}

@keyframes ameva-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}