.game-shell[data-theme="nim"] {
  --game-accent: #ffd86f;
  --game-accent-2: #ff8f70;
  --game-accent-soft: rgba(255, 216, 111, 0.2);
  --game-accent-deep: rgba(255, 143, 112, 0.12);
}

.nim-stage {
  display: grid;
  gap: 14px;
}

.nim-banner {
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(255, 216, 111, 0.18);
  background: rgba(255, 216, 111, 0.08);
  color: #fff4d1;
  line-height: 1.6;
}

.nim-banner.is-attack {
  border-color: rgba(255, 143, 112, 0.26);
  background: rgba(255, 143, 112, 0.1);
  color: #ffe5dd;
}

.nim-piles {
  display: grid;
  gap: 14px;
}

.nim-row {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    rgba(10, 15, 28, 0.72);
}

.nim-row.is-suggested {
  border-color: rgba(255, 216, 111, 0.28);
  box-shadow: 0 18px 34px rgba(255, 216, 111, 0.08);
}

.nim-row-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.nim-row-head span {
  color: rgba(255, 255, 255, 0.56);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 10px;
  font-weight: 800;
}

.nim-token-lane {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  min-height: 38px;
}

.nim-token {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 32%, #fff8d7, #ffd86f 58%, #d9832a 100%);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.18),
    0 8px 16px rgba(0, 0, 0, 0.22);
}

.nim-empty {
  color: rgba(255, 255, 255, 0.45);
  font-style: italic;
}

.nim-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nim-action {
  min-width: 78px;
}

.nim-action.is-best {
  border-color: rgba(255, 216, 111, 0.34);
  background: rgba(255, 216, 111, 0.16);
  color: #fff4d1;
}