/* Simple HUD for energy at top-right */
.game-hud {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 6000;
  pointer-events: none;
}
.energy-bar {
  display: flex;
  gap: 8px;
}
.energy-icon {
  width: 72px;
  height: 72px;
  image-rendering: auto;
  pointer-events: none;
}
.energy-pip {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 2px solid rgba(255,255,255,0.9);
  box-shadow: 0 1px 2px rgba(0,0,0,0.6), inset 0 0 0 2px rgba(255,255,255,0.25);
  background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(255,255,255,0.2));
  transform: rotate(45deg);
  opacity: 0.9;
}
.energy-pip.empty {
  background: linear-gradient(180deg, rgba(255,255,255,0.25), rgba(255,255,255,0.05));
  border-color: rgba(255,255,255,0.5);
  opacity: 0.6;
}