:root {
  --bath: #efebe3;
  --ink: #1a2fd6;
}

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

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bath);
  overscroll-behavior: none;
}

body {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.bath {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: none;
}

/* the next ink, carried under the pointer */
.ink-cursor {
  position: fixed;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.ink-cursor.on { opacity: 1; }
.ink-cursor svg {
  position: absolute;
  left: -13px;
  top: -13px;
  width: 26px;
  height: 26px;
  overflow: visible;
  fill: var(--ink);
  filter: drop-shadow(0 0 0.6px rgb(0 0 0 / 0.5)) drop-shadow(0 2px 4px rgb(0 0 0 / 0.25));
  transform: scale(var(--k, 1));
  transition: fill 0.3s ease, transform 0.12s ease;
}

/* lifted sheets */
.prints {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}
.print {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: 50% 50%;
  border-radius: 10px;
  will-change: transform;
}
.print.stacked {
  transform: var(--tf);
  pointer-events: auto;
  cursor: pointer;
  box-shadow: 0 14px 30px -10px rgb(0 0 0 / 0.4);
  transition: transform 0.55s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.55s ease;
}
.print.stacked:hover { transform: var(--tf) translateY(-70px); }
.print.stacked.open {
  z-index: 2;
  transform: var(--open);
  box-shadow: 0 50px 120px -40px rgb(0 0 0 / 0.5);
}

@media (pointer: coarse) {
  .bath { cursor: auto; }
  .ink-cursor { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .print.stacked,
  .ink-cursor,
  .ink-cursor svg { transition: none; }
}