.board.has-material-layer {
  position: relative;
}

.material-layer {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  overflow: hidden;
  border-radius: inherit;
}

.material-token {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.running .material-token {
  transition: transform 350ms cubic-bezier(.3, .65, .35, 1);
}

.material-piece {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 2px 1px #51351c38);
}

.material-token[data-kind="wood"] .material-piece {
  width: 75%;
  height: 48%;
  border: 1px solid #744524;
  border-radius: 4px;
  background: repeating-linear-gradient(0deg, #c38b54 0 3px, #dca66b 3px 6px);
  box-shadow: inset 3px 0 #efd09c, inset -3px 0 #966037;
  transform: rotate(-9deg);
}

.material-token[data-kind="parts"] .material-piece {
  width: 65%;
  height: 43%;
  border: 1px solid #936932;
  border-radius: 35% 35% 20% 20%;
  background: #e4b46d;
  box-shadow: inset 0 2px #f9dba7;
  transform: rotate(9deg);
}

.material-token[data-kind="parts"] .material-piece::before,
.material-token[data-kind="parts"] .material-piece::after {
  content: "";
  position: absolute;
  width: 20%;
  height: 80%;
  top: -45%;
  left: 25%;
  border: 1px solid #936932;
  border-radius: 50%;
  background: #f1ce8f;
}

.material-token[data-kind="parts"] .material-piece::after {
  left: 58%;
  transform: rotate(15deg);
}

.material-token[data-kind="toy"] .material-piece {
  background: url('../assets/token-toy.webp') center / contain no-repeat;
}

.material-token.is-processing .material-piece {
  filter: drop-shadow(0 0 3px #fff9e8) drop-shadow(0 2px 1px #51351c38);
}

.running .material-token.is-processing .material-piece {
  animation: material-warmth 900ms ease-in-out infinite;
}

.cell.is-material-processing .cell-svg {
  opacity: .32;
}

.cell.is-material-processing::after {
  content: "";
  position: absolute;
  left: 28%;
  right: 28%;
  bottom: 25%;
  height: 3px;
  border-radius: 3px;
  background: currentColor;
  opacity: .6;
  transform: scaleX(.5);
}

.running .cell.is-material-processing::after {
  animation: material-workbench 900ms ease-in-out infinite;
}

.material-token.is-packed {
  opacity: 0;
}

.running .material-token.is-packed {
  transition: transform 350ms cubic-bezier(.3, .65, .35, 1), opacity 130ms 260ms;
}

@keyframes material-warmth {
  50% { filter: drop-shadow(0 0 5px #fff2b6) drop-shadow(0 2px 1px #51351c38); }
}

@keyframes material-workbench {
  50% { transform: scaleX(1); opacity: .9; }
}

@media (prefers-reduced-motion: reduce) {
  .material-token,
  .running .material-token,
  .running .material-token.is-packed {
    transition: none;
  }

  .material-piece,
  .cell.is-material-processing::after {
    animation: none !important;
  }
}