.chess-game {
  width: min(100%, 680px);
}

.chess-brand {
  display: grid;
  place-items: center;
  color: #302820;
  font-family: "Segoe UI Symbol", "Noto Sans Symbols 2", serif;
}

.chess-brand-black,
.chess-brand-white {
  position: absolute;
  font-size: 1.8rem;
  line-height: 1;
}

.chess-brand-black {
  top: -0.03rem;
  right: 0;
}

.chess-brand-white {
  bottom: 0;
  left: 0;
  color: #c9363d;
}

.chess-game .status-bar[data-state="human"] .status-indicator {
  background: #c9363d;
}

.chess-game .status-bar[data-state="computer"] .status-indicator {
  background: #24232b;
}

.chess-game .player-card.is-active {
  border-color: #d8b993;
  background: #f5eee4;
}

.chess-disc-white,
.chess-disc-black {
  display: grid;
  place-items: center;
  font-family: "Segoe UI Symbol", "Noto Sans Symbols 2", serif;
  font-size: 1.4rem;
}

.chess-disc-white {
  border-color: #d9c3a6;
  background: #fff6e6;
  color: #24232b;
}

.chess-disc-black {
  border-color: #17161b;
  background: #24232b;
  color: #fff6e6;
}

.chess-board-frame {
  width: min(100%, 560px);
  margin: 1rem auto 0;
  padding: clamp(0.45rem, 2vw, 0.8rem);
  border: 1px solid #a67853;
  border-radius: 0.9rem;
  background: linear-gradient(135deg, #9e6d48, #805536);
  box-shadow: 0 7px 0 #5d402d, 0 12px 18px rgb(43 49 60 / 15%);
}

.chess-board {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  grid-template-rows: repeat(8, minmax(0, 1fr));
  aspect-ratio: 1;
  overflow: hidden;
  border: 2px solid #5b3929;
  border-radius: 0.35rem;
  background: #e8d4b3;
  box-shadow: inset 0 2px 6px rgb(36 24 16 / 18%);
}

.chess-square {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 0;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 0;
  cursor: default;
  -webkit-tap-highlight-color: transparent;
}

.chess-square.is-light {
  background: #e8d4b3;
}

.chess-square.is-dark {
  background: #65402e;
  cursor: pointer;
}

.chess-square:disabled {
  cursor: default;
}

.chess-square.is-last-move.is-light {
  background: #c5a56c;
}

.chess-square.is-last-move.is-dark {
  background: #8c7448;
}

.chess-square.is-check {
  background: #e8645b;
  box-shadow: inset 0 0 0 3px rgb(117 23 28 / 35%);
}

.chess-square.is-selected::before,
.chess-square.is-destination::before {
  position: absolute;
  z-index: 1;
  content: "";
  pointer-events: none;
}

.chess-square.is-selected::before {
  inset: 3%;
  border: 3px solid #63e0bb;
  box-shadow: inset 0 0 0 2px rgb(99 224 187 / 24%);
}

.chess-square.is-destination::before {
  width: 23%;
  height: 23%;
  border-radius: 50%;
  background: #f4cf63;
  box-shadow: 0 1px 4px rgb(24 19 14 / 45%);
}

.chess-square.is-capture.is-destination::before {
  width: 78%;
  height: 78%;
  border: clamp(2px, 0.7vw, 5px) solid #f4cf63;
  background: transparent;
  box-shadow: none;
}

.chess-square:focus-visible {
  z-index: 2;
  outline: 3px solid #63e0bb;
  outline-offset: -4px;
}

.chess-coordinate {
  position: absolute;
  z-index: 2;
  top: 3%;
  left: 5%;
  color: #65402e;
  font-size: clamp(0.45rem, 1.8vw, 0.7rem);
  font-weight: 750;
  line-height: 1;
  pointer-events: none;
}

.chess-square.is-dark .chess-coordinate {
  color: #f6e8d4;
}

.chess-piece {
  position: relative;
  z-index: 1;
  font-family: "Segoe UI Symbol", "Noto Sans Symbols 2", "DejaVu Sans", serif;
  font-size: clamp(1.4rem, 9.3vw, 3.65rem);
  line-height: 1;
  user-select: none;
  transition: transform 130ms ease;
  text-shadow: 0 2px 2px rgb(26 17 11 / 32%);
}

.chess-piece.is-white {
  color: #fff6e6;
  -webkit-text-stroke: 0.5px #b58b62;
}

.chess-piece.is-black {
  color: #24232b;
  -webkit-text-stroke: 0.5px #07080b;
}

.chess-square:not(:disabled):hover .chess-piece {
  transform: scale(1.06);
}

.promotion-control {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  margin: 1.2rem 0 0;
  color: #817c74;
  font-size: 0.8rem;
  font-weight: 650;
}

.promotion-control select {
  padding: 0.35rem 0.55rem;
  border: 1px solid #e4ddd1;
  border-radius: 0.45rem;
  background: #fffdf9;
  color: #34445a;
  font: inherit;
}

.promotion-control select:focus-visible {
  outline: 3px solid #b47c50;
  outline-offset: 2px;
}

.chess-game .instructions {
  margin-top: 0.85rem;
}

.chess-game .new-game-button {
  background: #805536;
  box-shadow: 0 3px 0 #5d402d;
}

.chess-game .new-game-button:not(:disabled):hover {
  background: #70482f;
}

.chess-game .new-game-button:focus-visible {
  outline-color: #b47c50;
}

@media (max-width: 420px) {
  .chess-board-frame {
    padding: 0.4rem;
  }

  .chess-square.is-selected::before {
    border-width: 2px;
  }
}