@import url('https://fonts.googleapis.com/css2?family=Mochiy+Pop+P+One&display=swap');

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f2acac;
  font-family: 'Mochiy Pop P One', sans-serif;
}

input#open {
  display: none;
}

.valentines-day-card {
  position: relative;
  width: 300px;
  height:300px;
  transform-style: preserve-3d;
	transform: perspective(2500px);
  transition: .3s;
}

.card-front {
  position: relative;
  background-color: #fff0f3;
  width: 300px;
  height:300px;
  transform-origin: left;
  box-shadow: inset 100px 20px 100px rgba(0,0,0,.15), 30px 0 50px rgba(0,0,0,0.3);
  transition: .3s;
}

.card-front:before {
  content:"";
  position: absolute;
  width: 280px;
  height: 280px;
  background-color: #d04e4e;
  top: 10px;
  left: 10px;
}

.card-inside {
  position: absolute;
  background-color: #fff0f3;
  width: 300px;
  height:300px;
  z-index:-1;
  left:0;
  top:0;
  box-shadow: inset 100px 20px 100px rgba(0,0,0,0.22), 100px 20px 100px rgba(0,0,0,0.1);
}

.open {
  position: absolute;
  width: 300px;
  height:300px;
  left:0;
  top:0;
  background-color: transparent;
  z-index:6;
  cursor: pointer;
}

#open:checked ~ .card-front {
  transform: rotateY(-155deg);
  box-shadow: inset 100px 20px 100px rgba(0,0,0,.13), 30px 0 50px rgba(0,0,0,0.1);
}

#open:checked ~ .card-front:before {
  z-index:5;
  background-color: #fff0f3;
  width:300px;
  height:300px;
  top:0;
  left:0;
  box-shadow: inset 100px 20px 100px rgba(0,0,0,.1), 30px 0 50px rgba(0,0,0,0.1);
}

.note {
  position: relative;
  width: 200px;
  height: 150px;
  background-color: #fff0f3;
  top:75px;
  left:50px;
  color: #333;
  font-size:18px;
  display: flex;
  align-items: center;
  text-align: center;
  filter: drop-shadow(0 0 20px rgba(0,0,0,0.3));
}

.note:before, .note:after {
  position: absolute;
  content:"";
  background-color: #ba1c1c;
  width: 40px;
  height:40px;
}

.note:before {
  transform: rotate(-45deg);
  top:-20px;
  left:80px;
}

.note:after {
  border-radius:50%;
  top:-35px;
  left:65px;
  box-shadow:30px 0 #ba1c1c;
}


.text-one {
  position: absolute;
  color: #333;
  font-size: 30px;
  top:30px;
  width:300px;
  text-align: center;
}

.text-one:before, .text-one:after {
  position: absolute;
  left:5px;
  text-align: center;
  width:300px;
}

.text-one:before {
  content:"Valentine's";
  top:30px;
  color: #d04e4e;
}

.text-one:after {
  content:"day!";
  top:60px;
}

/* Update heart position and size for mobile */
.heart {
  position: relative;
  height: 8vw; /* Adjusted size for mobile */
  width: 8vw; /* Adjusted size for mobile */
  top: 9.4vw; /* Adjusted position for mobile */
  left: 5vw; /* Adjusted position for mobile */
  transform: rotate(-45deg);
  animation: .8s beat infinite;
}
  
.heart:before, .heart:after {
  content:"";
  background-color: #d04e4e;
  border-radius:50%;
  height: 60px;
  width: 60px;
  position: absolute;
  }
  
.heart:before {
  top:-30px;
  left:0;
}
  
.heart:after {
  left:30px;
  top:0;
}

.center-below-heart {
  display: block;
  margin-left: auto;
  margin-right: auto;
  position: absolute;
  top: 320px; /* Adjust this value to position the image below the heart */
  left: calc(50% - 100px); /* Center the image horizontally */
  width: 200px; /* Set the width of the image */
  height: 200px; /* Set the height of the image */
}

.center-below-heart {
  display: block;
  margin-left: auto;
  margin-right: auto;
  position: absolute;
  top: 320px; /* Adjust this value to position the image below the heart */
  left: calc(50% - 100px); /* Center the image horizontally */
  width: 200px; /* Set the width of the image */
  height: 200px; /* Set the height of the image */
}

.center-below-heart {
  display: none; /* Initially hide the image */
}

#open:checked ~ .card-inside .center-below-heart {
  display: block; /* Show the image when the checkbox is checked */
}

@keyframes beat {
  0%, 40%, 100% {
    transform: scale(1) rotate(-45deg);
  }
  25%, 60% {
    transform: scale(1.1) rotate(-45deg);
  }
}