:root {
  --pulse-opacity: 0.4;
  --pulse-scale: 3;
  --pulse-speed: 3s;
  --pulse-speed-hover: 2.5s;
}

/* Wrapper to center and hold everything */
.pulse-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 90vh;
  overflow: visible; /* allow pulses to extend outside */
  background-color: #fff;
}

/* Logo container ensures precise pulse alignment */
.logo-container {
  position: relative;
  width: 240px;
  height: 240px;
  overflow: visible; /* important for pulse breathing room */
}

/* Shared logo + pulse positioning */
.logo-hero,
.logo-pulse {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-origin: center center;
}

/* Main visible logo */
.logo-hero {
  z-index: 2;
  transition: transform 2s ease;
  opacity: 0.85;
}

/* Ghost pulse effect */
.logo-pulse {
  fill: rgba(0, 0, 0, 0.2);
  z-index: 1;
  animation: pulse-logo var(--pulse-speed) ease-out infinite;
}

.logo-pulse.delay {
  animation-delay: 3s;
}

/* Hover effect reverses the pulse */
.pulse-wrapper:hover .logo-pulse {
  animation: pulse-logo-in var(--pulse-speed-hover) ease-out infinite;
}

.pulse-wrapper:hover .logo-pulse.delay {
  animation-delay: 0.3s;
}

.pulse-wrapper:hover .logo-hero {
  transform: scale(1.05);
}

/* Keyframes for pulse animations */
@keyframes pulse-logo {
  0% {
    transform: scale(1);
    opacity: var(--pulse-opacity);
  }
  100% {
    transform: scale(var(--pulse-scale));
    opacity: 0;
  }
}

@keyframes pulse-logo-in {
  0% {
    transform: scale(var(--pulse-scale));
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: var(--pulse-opacity);
  }
}

/* Responsive */
@media (max-width: 600px) {
  .logo-container {
    width: 160px;
    height: 160px;
  }

  .logo-hero,
  .logo-pulse {
    width: 100%;
    height: 100%;
  }
}