citrus-cms/template/assets/scss/custom/_card.scss

// 
// card.scss
// Extended from Bootstrap
//

// Quick fix for border radius issue in safari
.card, .overflow-hidden{
  will-change: transform;
}

// 
// Additional styles for theme
// 

// Hovering on card to show element
.card{
  .card-element-hover{
    visibility: hidden;
    margin-top: 30px;
    opacity: 0;
    transition: $transition-base;
    z-index: 9;
  }
  &:hover{
    .card-element-hover{
      visibility: visible;
      margin-top: 0px;
      opacity: 1;
    }
  }
}

// Hovering on card to show hover overlay on bottom
.card{
  &.card-overlay-bottom{
    overflow: hidden;
    &:before {
      content: "";
      position: absolute;
      height: 50%;
      width: 100%;
      bottom: 0;
      left: 0;
      right: 0;
      background-image: -webkit-gradient(linear, left top, left bottom, from(transparent), to(rgba($black, 1)));
      background-image: linear-gradient(180deg, transparent, rgba($black, 1));
      z-index: 1;
    }
  }
  .card-img-overlay{
    z-index: 2;
  }
}

// Hovering on card to show hover overlay on top
.card{
  &.card-overlay-top{
    overflow: hidden;
    &:before {
      content: "";
      position: absolute;
      height: 50%;
      width: 100%;
      top: 0;
      left: 0;
      right: 0;
      background-image: -webkit-gradient(linear, left top, left bottom, from(transparent), to(rgba($black, 1)));
      background-image: linear-gradient(0deg, transparent, rgba($black, 1));
    }
  }
}

// Card hover image scale
.card-img-scale{
  .card-img {
    transition: $transition-base;
    transform: scale(1);
  } 
  &:hover .card-img{
    transform: scale(1.08);
  }
}

// Card hover bg image scale
.card-bg-scale{
  z-index: 99;
}
.card-bg-scale::after { 
  content:"";
  position:absolute; 
  top:0;
  right:0;
  bottom:0;
  left:0;
  background: inherit;
  transition: all 1s !important;
  z-index: -2;
}
.card-bg-scale:hover::after { 
  transform: scale(1.1);
  transition: all 1s !important;
}

// card featured
.card-featured {
  position: absolute;
  z-index: 99;
  background: $primary;
  color: $white;
  transform: rotate(45deg);
  text-align: center;
  top: -8px;
  right: -48px;
  width: 120px;
  padding: 16px 0 3px 0;
}

// Flash overlay on card hover
.card-img-flash {
  position: relative;
  overflow: hidden;
}
.card-img-flash::before {
  content: '';
  position: absolute;
  top: 0;
  z-index: 2;
  left: -80%;
  width: 50%;
  height: 100%;
  display: block;
  background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,.3) 100%);
  transform: skewX(-25deg);
}
.card-img-flash:hover::before {
  animation: imgflash 1s;
}
@-webkit-keyframes imgflash {
  100% {
    left: 125%;
  }
}
@keyframes imgflash {
  100% {
    left: 125%;
  }
}

// card grid for fix height
.card-grid {
  .card-grid-lg{
    height: 560px;
  }
  .card-grid-sm{
    height: calc(280px - calc(var(--bs-gutter-y) / 2));
  }
}
@include media-breakpoint-down(md) {
  .card-grid .card-grid-lg{
    height: 400px;
  }
}

// Card fold style on hover
.card-fold {
  position: relative;
  transform: translateZ(0);
  box-shadow: 0 0 1px rgba($black, 0);
}
.card-fold:after {
  position: absolute;
  content: '';
  height: 0;
  width: 0;
  bottom: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(-45deg, $body-bg 45%, $body-bg 45%, $gray-400 50%, $white 70%);
  box-shadow: -5px -5px 5px rgba($black, 0.4);
  transition: 0.3s;
  border-radius: $card-border-radius 0px 0px 0px;
}
.card:hover .card-fold:after,
.card:focus .card-fold:after,
.card:active .card-fold:after,
.card:hover.card-fold:after,
.card:focus.card-fold:after,
.card:active.card-fold:after  {
  width: 40px;
  height: 40px;
}

.bg-dark .card-fold{
  &:after{
    --bs-bg-opacity: 1;
    background: linear-gradient(-45deg, rgba(var(--bs-dark-rgb), var(--bs-bg-opacity)) 45%, $black 45%, $gray-400 50%, $white 70%);
  }
}