/* Reset y box-sizing */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

*:focus {
  outline: 0;
}

html {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-family: 'Poppins', sans-serif;
  background-color: #111111;
}

/* Fondo sutil detrás del ul */
ul:before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -50%;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.05);
  pointer-events: none;
  z-index: 1;
}

/* Contenedor de botones */
ul {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  max-width: 90%;
  margin-inline: auto;
  width: 240px;
  padding: 20px 0;
  border: 3px solid #000;
  border-radius: 10px;
  background-image: linear-gradient(0deg, #000, #0c0c0c);
  overflow: hidden;
}

/* Items */
ul li {
  position: relative;
  list-style: none;
  margin: 15px;
  text-align: center;
  cursor: pointer;
}

/* Botón invisible que captura clicks */
ul li button {
  position: absolute;
  inset: 0; /* top/right/bottom/left = 0 */
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

/* Caja del icono */
ul li .icon-box {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 60px;
  height: 60px;
  border: 3px solid #000;
  border-radius: 10px;
  background-color: #101010;
  transition:
    background-color 0.5s ease,
    border-color 0.5s ease,
    box-shadow 0.5s ease;
}

/* Iconos dentro del box */
ul li .icon-box .fa {
  font-size: 30px;
  color: #222;
  transition:
    color 0.5s ease,
    text-shadow 0.5s ease;
}

/* Hover en li (aplica a icon-box e icono) */
ul li:hover .icon-box {
  background-color: #000;
  border-color: #fff;
  box-shadow:
    0 0 10px rgba(33, 156, 243, 0.5),
    0 0 20px rgba(33, 156, 243, 0.5),
    0 0 30px rgba(33, 156, 243, 0.5),
    0 0 10px #219cf3 inset;
}

ul li:hover .icon-box .fa {
  color: #fff;
  text-shadow:
    0 0 10px #219cf3,
    0 0 10px #219cf3;
}

#result {
  font-size: 2rem;
  color: #fff;
  text-align: center;
}