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

html, body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  background: #fff;
  -webkit-user-select: none;
  user-select: none;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-stack {
  position: relative;
  width: min(85vw, 500px);
  aspect-ratio: 3 / 4;
  max-height: 75vh;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.card-stack.ready {
  opacity: 1;
}

/* Fallback: show cards after 3s even if JS fails */
@keyframes fallback-show {
  to { opacity: 1; }
}
.card-stack {
  animation: fallback-show 0s 3s forwards;
}

.card {
  position: absolute;
  inset: 0;
  border-radius: 4px;
  overflow: hidden;
  touch-action: none;
  cursor: grab;
  will-change: transform;
}

.card:active {
  cursor: grabbing;
}

.card[data-href] {
  cursor: pointer;
}

.card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

/* Card depth layers — set by JS via inline styles */
.card.dragging {
  transition: none !important;
  box-shadow:
    0 2px 4px hsl(0deg 0% 0% / 0.06),
    0 4px 8px hsl(0deg 0% 0% / 0.06),
    0 8px 16px hsl(0deg 0% 0% / 0.06),
    0 16px 32px hsl(0deg 0% 0% / 0.06);
}

.card.snapping {
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.05),
              box-shadow 0.4s ease,
              z-index 0s;
}