.zone {
  position: relative;
  cursor: pointer;
}

/* --- HALO PRINCIPAL QUI RESPIRE --- */
.zone::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 150%;
  height: 150%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(rgba(255,255,200,0.55), rgba(255,255,255,0) 70%);
  opacity: 0;
  pointer-events: none;
  z-index: -1;
  animation: breathe 2.8s ease-in-out infinite;
  transition: opacity 0.4s ease-out;
}

.zone:hover::before {
  opacity: 1;
}

/* --- PETITES PARTICULES GLITTER --- */
.zone::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 170%;
  height: 170%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  background-image:
    radial-gradient(rgba(255,255,255,0.8) 0%, transparent 70%),
    radial-gradient(rgba(255,255,255,0.6) 0%, transparent 70%),
    radial-gradient(rgba(255,255,180,0.7) 0%, transparent 70%);
  background-size: 8px 8px, 6px 6px, 10px 10px;
  background-position:
    20% 30%,
    70% 60%,
    40% 80%;
  opacity: 0;
  animation: glitter 1.4s infinite alternate ease-in-out;
  transition: opacity 0.4s ease-out;
}

.zone:hover::after {
  opacity: 1;
}

/* --- ANIMATIONS --- */

@keyframes breathe {
  0%   { transform: translate(-50%, -50%) scale(0.9); opacity: 0.65; }
  50%  { transform: translate(-50%, -50%) scale(1.08); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(0.9); opacity: 0.65; }
}

@keyframes glitter {
  0% {
    background-position:
      18% 30%,
      72% 61%,
      41% 79%;
    opacity: .3;
  }
  100% {
    background-position:
      22% 32%,
      68% 58%,
      39% 82%;
    opacity: .7;
  }
}