Pulse and Ping Animations

/* Simple pulse */
.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Ping effect (ripple outward) */
.ping {
  position: relative;
}

.ping::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: inherit;
  animation: ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
  75%, 100% {
    transform: scale(2);
    opacity: 0;
  }
}

/* Notification dot with ping */
.notification-dot {
  position: relative;
  width: 12px;
  height: 12px;
  background: #ef4444;
  border-radius: 50%;
}

.notification-dot::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #ef4444;
  border-radius: 50%;
  animation: ping 1.5s ease-out infinite;
}

/* Scale pulse for buttons */
.pulse-scale {
  animation: pulse-scale 2s ease-in-out infinite;
}

@keyframes pulse-scale {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}