/* ========================================================================
   Fullscreen Spinner Overlay
   ======================================================================== */
#spinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.98); /* Dim background for loading state */
  z-index: 20000; /* Above all other UI */
  transition: opacity 0.3s;
}

/* Hide spinner overlay when not needed */
#spinner[hidden] {
  opacity: 0;
  pointer-events: none;
}

/* ========================================================================
   Spinner Circle
   ======================================================================== */
.spinner-circle {
  width: 64px;
  height: 64px;
  border: 8px solid #222;
  border-top: 8px solid #f12f12; /* Accent color for animation */
  border-radius: 50%;
  animation: spin 1s linear infinite;
  box-shadow: 0 0 32px #000;
}

/* ========================================================================
   Spinner Animation
   ======================================================================== */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}