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

html, body {
  background: transparent;
  overflow: hidden;
}

.popup {
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.card-wrap {
  perspective: 1200px;
  animation: float 3s ease-in-out infinite;
}

.card {
  position: relative;
  width: 90vw;
  max-width: 360px;
  aspect-ratio: 4 / 5;
  transform-style: preserve-3d;
  transition: transform 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

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

.card-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 16px;
  overflow: hidden;
}

.card-face img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

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

@media (max-width: 280px) {
  .card {
    width: 240px;
    height: 320px;
  }
}