#cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;  
  max-width: 90%;
  width: calc(100% - 20px);
}

#cards:hover > .card::after {
  opacity: 1;
}

.card {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  display: flex;
  min-height: 550px;
  flex-direction: column;
  position: relative;
  width: 400px;  
}

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

.card::before,
.card::after {
  border-radius: inherit;
  content: "";
  height: 100%;
  left: 0px;
  opacity: 0;
  position: absolute;
  top: 0px;
  transition: opacity 500ms;
  width: 100%;
}

.card::before {
  background: radial-gradient(
    800px circle at var(--mouse-x) var(--mouse-y), 
    rgba(37, 233, 19, 0.1),
    transparent 40%
  );
  z-index: 3;
}

.card::after {  
  background: radial-gradient(
    600px circle at var(--mouse-x) var(--mouse-y), 
    rgba(37, 233, 19, 0.1),
    transparent 40%
  );
  z-index: 1;
}

.card > .card-content {
  background-color: var(--card-color);
  border-radius: inherit;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  inset: 1px;
  padding: 10px;
  position: absolute;
  z-index: 2;
  text-align: center;
}

/* -- ↓ ↓ ↓ extra card content styles ↓ ↓ ↓ -- */

h1, h2, h3, h4, span {
  color: rgb(255, 255, 255);
  font-family: "Rubik", sans-serif;
  font-weight: 400;
  margin: 0px;
}

.card-info-wrapper {
  align-items: center;
  display: flex;
  flex-grow: 1;
  justify-content: center;
  padding: 0px 20px;
}

.card-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  width: 100%;
  height: 90%;
}

.card-info > h3 {
  font-size: 1.5em;
  line-height: 20px;
}

.card-info > h4 {
  color: rgba(255, 255, 255);
  font-size: 1.1em;
  margin-top: 8px;
  width: 100%;
}

/* -- ↓ ↓ ↓ some responsiveness ↓ ↓ ↓ -- */

@media(max-width: 1000px) {
  body {
    align-items: flex-start;  
    overflow: auto;
  }
  
  #cards {    
    max-width: 1000px;
  }
  
  .card {
    flex-shrink: 1;
  }
}

@media(max-width: 500px) {     
  .card-info-wrapper {
    padding: 0px 10px;
  }
  
  .card-info-title > h3 {
    font-size: 0.9em;
  }

  .card-info-title > h4 {
    font-size: 0.8em;
    margin-top: 4px;
  }
}

@media(max-width: 320px) {
  .card {
    width: 100%;
  }
}