body {
background-image: url("img/back.jpg");
  background-color: #000;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  margin: 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  height: 100vh;
  font-family: "Open Sans";
}

.stone {
  --bg-color: #2f2f2f;
  --bg-color-light: #fff;
  --text-color-hover: #fff;
  --box-shadow-color: rgba(255, 255, 255, 0.48);
}

.ruby {
  --bg-color: #660017;
  --bg-color-light: #fd89a4;
  --text-color-hover: #fff;
  --box-shadow-color: rgb(170, 1, 40);
}

.sapphire {
  --bg-color: #052387;
  --bg-color-light: #8da6fb;
  --text-color-hover: #fff;
  --box-shadow-color: rgb(5, 35, 135);
}

.emerald {
  --bg-color: #038143;
  --bg-color-light: #76f7b7;
  --text-color-hover: #FFF;
  --box-shadow-color: rgb(3, 129, 67);
}

.card {
  width: 220px;
  height: 321px;
 background:#000000db;
 border:3px solid var(--bg-color);
  border-radius:12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  box-shadow:1px 1px 10px 2px #000000ab;
  transition: all 0.3s ease-out;
  text-decoration: none;
}

.card:hover {
  transform: translateY(-5px) scale(1.005) translateZ(0);
  box-shadow: 0 24px 36px rgba(0,0,0,0.11),
    0 24px 46px var(--box-shadow-color);
  border:3px solid var(--bg-color-light);
}

.card:hover .overlay {
  transform: scale(4) translateZ(0);
}

.card:hover .circle {
  border-color: var(--bg-color-light);
  background: var(--bg-color);
}

.card:hover .circle:after {
  background: var(--bg-color-light);
}

.card:hover p {
  color: var(--text-color-hover);
}

.card:active {
  transform: scale(1) translateZ(0);
  box-shadow: 0 15px 24px rgba(0,0,0,0.11),
    0 15px 24px var(--box-shadow-color);
}

.card p {
  font-size: 17px;
  color: #fff;
  margin-top: 30px;
  z-index: 1000;
  transition: color 0.3s ease-out;
}

.circle {
  width: 131px;
  height: 131px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--bg-color);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
  transition: all 0.3s ease-out;
}

.circle:after {
  content: "";
  width: 118px;
  height: 118px;
  display: block;
  position: absolute;
  background: var(--bg-color);
  border-radius: 50%;
  top: 7px;
  left: 7px;
  transition: opacity 0.3s ease-out;
}

.circle svg {
  z-index: 10000;
  transform: translateZ(0);
}

.overlay {
  width: 118px;
  position: absolute; 
  height: 118px;
  border-radius: 50%;
  background: var(--bg-color);
  left: 50px;
  z-index: 0;
  transition: transform 0.3s ease-out;
}