/* --- Estilos base --- */
body {
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #f0f0f0;
  margin: 0;
  padding: 0;
}
header {
  background-color: #4CAF50;
  color: white;
  padding: 20px 0;
}
section { margin: 40px; }
button {
  background-color: #4CAF50;
  color: white;
  padding: 10px 20px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}
button:hover { background-color: #45a049; }
footer {
  margin-top: 50px;
  background-color: #333;
  color: white;
  padding: 15px 0;
}

/* --- PRELOADER --- */
#preloader {
  position: fixed;
  inset: 0;
  background: #ffffff;
  display: grid;
  place-items: center;
  gap: 12px;
  z-index: 9999;
  opacity: 1;
  pointer-events: all;
  transition: opacity 300ms ease;
}

#preloader.hidden {
  opacity: 0;
  pointer-events: none;
}

.preloader-img {
  width: 1000px;   /* ajusta el tamaño */
  height: auto;
  animation: pulse 1.5s infinite ease-in-out;
}

.preloader-text {
  margin: 0;
  color: #333;
  font-size: 0.95rem;
  font-weight: bold;
}

/* Animación ligera para la imagen */
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.7; }
}