/* Bubble Animations */
@keyframes floatBubble {
  0% {
    transform: translate(0, 0) scale(0);
    opacity: 0;
  }
  10% {
    transform: translate(var(--tx), -20px) scale(1);
    opacity: 1;
  }
  85% {
    transform: translate(var(--tx), -240px) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(var(--tx), -280px) scale(1.5);
    opacity: 0;
  }
}

@keyframes wobble {
  0%, 100% {
    transform: translateX(0) rotate(0);
  }
  33% {
    transform: translateX(-3px) rotate(-3deg);
  }
  66% {
    transform: translateX(3px) rotate(3deg);
  }
}

.bubble-container {
  --tx: 0px;
  animation: floatBubble 4.5s ease-in-out infinite;
}

.bubble-container:nth-child(1) {
  --tx: -70px;
}

.bubble-container:nth-child(2) {
  --tx: 0px;
}

.bubble-container:nth-child(3) {
  --tx: 70px;
}

.bubble-emoji {
  width: 45px;
  height: 45px;
  background: rgba(255, 255, 255, 0.15);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 
    inset 0 0 15px rgba(255, 255, 255, 0.2),
    0 0 15px rgba(77, 158, 255, 0.2);
  animation: wobble 2.5s ease-in-out infinite;
  position: relative;
  z-index: 10;
}

.bubble-emoji::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 10px;
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
}

.bubble-emoji::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 13px;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
}

/* Plus Symbol Animation */
.plus-symbol {
  width: 20px;
  height: 20px;
  position: relative;
  animation: pulse-plus 3s infinite;
}

.plus-symbol::before,
.plus-symbol::after {
  content: '';
  position: absolute;
  background: linear-gradient(90deg, #4d9eff, #00f7ff);
  border-radius: 2px;
}

.plus-symbol::before {
  width: 100%;
  height: 2px;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}

.plus-symbol::after {
  width: 2px;
  height: 100%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}

@keyframes pulse-plus {
  0% {
    opacity: 0.2;
    transform: scale(0.8);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.2);
  }
  100% {
    opacity: 0.2;
    transform: scale(0.8);
  }
}