*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #E9E5DF;
}

.card-container {
  perspective: 2000px;
  width: 90%;
  aspect-ratio: 493 / 287;
  cursor: pointer;
  position: relative;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.3s ease;
  transform-style: preserve-3d;
}

.card-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.card-face img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

.face-front {
  z-index: 1;
  transform: rotateY(0deg);
}

.face-back {
  transform: rotateY(180deg);
}

.card-container.flipped .card-inner {
  transform: rotateY(180deg);
}

.card-inner:hover {
  transform: scale(1.02);
}

.card-container.flipped .card-inner:hover {
  transform: rotateY(180deg) scale(1.02);
}

.card-blur {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 90%;
  height: 90%;
  background: #FF7553;
  filter: blur(120px);
  opacity: 0.1;
  transform: translate(-50%, -50%);
  z-index: -1;
  pointer-events: none;
}

.paper-container {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) translateY(100vh) rotate(5deg) scale(1);
  height: min(calc(100vh - 200px), calc((100vw - 20vw) * 1.414));
  width: auto;
  aspect-ratio: 210 / 297;
  background: url('../Paper.png') center/cover no-repeat;
  background-color: #f4f1ea;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease-out;
  z-index: 5;
  pointer-events: none;
}

.paper-container.show {
  transform: translate(-50%, -50%) translateY(0) rotate(-1deg) scale(1.2);
  pointer-events: auto;
}

.paper-content {
  padding: 10% 15%;
  font-family: Georgia, serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #333;
}