.play-shell {
  background:
    linear-gradient(135deg, rgba(255, 207, 98, 0.12), transparent 38%),
    linear-gradient(225deg, rgba(93, 214, 200, 0.12), transparent 42%),
    var(--bg);
}

.play-stage {
  display: grid;
  gap: 20px;
  margin: 0 auto;
  max-width: 1120px;
  padding: 32px clamp(14px, 4vw, 28px) 72px;
}

.play-header {
  display: grid;
  gap: 14px;
  max-width: 820px;
}

.play-header h1 {
  font-size: clamp(42px, 8vw, 88px);
}

.play-toolbar {
  align-items: end;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(160px, 1fr) repeat(4, auto);
}

.play-field {
  display: grid;
  gap: 7px;
}

.play-field label,
.panel-title {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.play-field select,
.play-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  min-height: 44px;
}

.play-field select {
  appearance: none;
  background: #f7fff1;
  color: #101716;
  padding: 0 38px 0 14px;
}

.play-button {
  background: #f7fff1;
  color: #101716;
  cursor: pointer;
  font-weight: 850;
  padding: 0 14px;
}

.play-button.primary {
  background: linear-gradient(135deg, var(--amber), var(--grass));
  border-color: rgba(255, 207, 98, 0.72);
}

.play-button:hover,
.fc-card:not([disabled]):hover,
.fc-cell:hover,
.piece-button:hover {
  transform: translateY(-1px);
}

.game-layout {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(280px, 1fr) minmax(250px, 0.42fr);
}

.board-panel,
.side-panel {
  background: rgba(23, 35, 31, 0.94);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
}

.board-panel {
  display: grid;
  gap: 16px;
  padding: clamp(14px, 3vw, 22px);
}

.board-strip {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

#level-title {
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  margin: 0;
}

#status {
  background: rgba(247, 255, 241, 0.08);
  border: 1px solid rgba(93, 214, 200, 0.22);
  border-radius: 8px;
  color: var(--muted);
  margin: 0;
  min-height: 42px;
  padding: 10px 12px;
}

/* --- board --- */

#freecell-board {
  display: grid;
  gap: 16px;
}

.fc-top {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}

.fc-cells,
.fc-foundations {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.fc-cell {
  align-items: center;
  appearance: none;
  aspect-ratio: 5 / 7;
  background: rgba(247, 255, 241, 0.06);
  border: 1px dashed rgba(247, 255, 241, 0.22);
  border-radius: 8px;
  color: #101716;
  cursor: pointer;
  display: grid;
  font: inherit;
  gap: 2px;
  justify-items: center;
  min-width: 0;
  padding: 4px;
}

.fc-cell.free {
  border-style: solid;
  border-color: rgba(93, 214, 200, 0.34);
}

.fc-cell.foundation {
  border-style: solid;
  border-color: rgba(255, 207, 98, 0.34);
}

.fc-cell .fc-placeholder {
  color: rgba(247, 255, 241, 0.34);
  font-size: clamp(16px, 4vw, 28px);
  font-weight: 900;
}

.fc-cell.selected,
.fc-card.selected {
  outline: 3px solid var(--amber);
  outline-offset: 1px;
}

.fc-tableau {
  display: grid;
  gap: clamp(5px, 1.4vw, 10px);
  grid-template-columns: repeat(8, minmax(0, 1fr));
}

.fc-column {
  align-content: start;
  background: rgba(247, 255, 241, 0.05);
  border: 1px solid rgba(247, 255, 241, 0.12);
  border-radius: 8px;
  display: grid;
  gap: 3px;
  min-height: 96px;
  padding: 4px;
}

.fc-card {
  align-items: center;
  appearance: none;
  aspect-ratio: 5 / 7;
  background: #f7f3e6;
  border: 1px solid rgba(18, 24, 23, 0.28);
  border-radius: 6px;
  cursor: pointer;
  display: grid;
  font: inherit;
  gap: 0;
  grid-template-columns: 1fr auto;
  align-content: center;
  min-width: 0;
  padding: 2px 5px;
}

.fc-card[disabled] {
  cursor: default;
  filter: brightness(0.92);
}

.fc-card.empty {
  background: rgba(247, 255, 241, 0.04);
  border-style: dashed;
  border-color: rgba(247, 255, 241, 0.22);
}

.fc-rank {
  font-size: clamp(11px, 2.4vw, 17px);
  font-weight: 900;
  line-height: 1;
}

.fc-suit {
  font-size: clamp(11px, 2.4vw, 17px);
  line-height: 1;
}

.fc-cell .fc-rank,
.fc-cell .fc-suit {
  font-size: clamp(13px, 3vw, 22px);
}

.color-red {
  color: #c0392b;
}

.color-black {
  color: #16201d;
}

#freecell-board[data-solved="true"] .fc-card,
#freecell-board[data-solved="true"] .fc-cell.foundation {
  border-color: rgba(165, 232, 109, 0.7);
}

/* --- side panel --- */

.side-panel {
  align-content: start;
  display: grid;
  gap: 18px;
  padding: 16px;
}

#piece-list,
#move-list {
  display: grid;
  gap: 8px;
  list-style: none;
  margin: 0;
  max-height: 320px;
  overflow-y: auto;
  padding: 0;
}

#piece-list li,
#move-list li {
  align-items: center;
  background: rgba(247, 255, 241, 0.08);
  border: 1px solid rgba(93, 214, 200, 0.16);
  border-radius: 8px;
  color: var(--muted);
  display: flex;
  gap: 10px;
  justify-content: space-between;
  min-height: 42px;
  padding: 8px 10px;
}

.piece-button {
  background: rgba(247, 255, 241, 0.94);
  border: 0;
  border-radius: 8px;
  color: #101716;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 900;
  min-height: 32px;
  padding: 0 10px;
}

@media (max-width: 860px) {
  .play-toolbar,
  .game-layout {
    grid-template-columns: 1fr;
  }

  .play-button {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .play-stage {
    padding-top: 20px;
  }

  .board-panel,
  .side-panel {
    padding: 12px;
  }

  .board-strip {
    align-items: flex-start;
    flex-direction: column;
  }

  .fc-top {
    grid-template-columns: 1fr;
  }
}