body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  background: radial-gradient(circle at center, #2e2e2e 0%, #111 100%);
  font-family: sans-serif;
  overflow: hidden;
  position: relative;
}

.scene {
  perspective: 1000px;
  width: 300px;
  height: 450px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: float 3s ease-in-out infinite;
}

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

.card {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.8s ease;
  cursor: pointer;
}

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

.card-face {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  overflow: hidden;
  backface-visibility: hidden;
}

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

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

.centered {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.shine {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.25), rgba(255,255,255,0) 60%);
  opacity: 0.35;
  mix-blend-mode: screen;
  pointer-events: none;
}

.firework-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}