:root {
  --gd-color1: #7fabec;
  --gd-color2: yellow;
}

body {
  font-family: 'Montserrat', sans-sherif;
  background: radial-gradient(ellipse at center,  #333, #333, #222);
  background-repeat: no-repeat;
  height: 100vh;
  color: #ffffff;
  overflow: hidden;
  
  display: flex;
  align-items: center;
  justify-content: center;
}

.card {
  position: relative;
  width: 350px;
  height: 450px;
  margin: 0 50px;
}

.card .content {
  overflow: hidden;
  height: 100%;
}

.card .image img {
  display: block;
  filter: grayscale(100%) brightness(60%);
  transition:filter 1s;
}

.card .title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: right;
  background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.5) 50%);
  padding: 40px 20px 10px;
  font-size: 2rem;
  border-radius: 20px;
}

.card .author {
  font-size: 0.8rem;
  opacity: 0.5;
}

/* ========================================= */

.card::before,.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--gd-color1), var(--gd-color2));
  filter: blur(30px);
  opacity: 0;
  z-index: -1;
  
  transition:filter 1s;
}

.card::after {
  filter: blur(50px);
}

.card:hover .image img {
  filter: grayscale(0) brightness(100%);
}

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