* { box-sizing: border-box; }
body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: #fdf2f8;
}

.like-checkbox {
  display: none;
}

.like-heart {
  cursor: pointer;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #cbd5e1;
  transition: transform 0.2s;
  position: relative;
}

.like-heart svg {
  width: 40px;
  height: 40px;
  transition: fill 0.3s;
}

.like-heart:hover {
  transform: scale(1.1);
}

/* Checked State */
.like-checkbox:checked + .like-heart {
  color: #e11d48;
  animation: bounce 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Particle Explosion (using box-shadow trick) */
.like-checkbox:checked + .like-heart::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  z-index: -1;
  box-shadow: 
    -25px -25px 0 -15px #e11d48,
    25px -25px 0 -15px #e11d48,
    -25px 25px 0 -15px #e11d48,
    25px 25px 0 -15px #e11d48;
  animation: particles 0.4s forwards;
}

@keyframes bounce {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

@keyframes particles {
  0% { transform: scale(0.5); opacity: 1; }
  100% { transform: scale(1.5); opacity: 0; }
}