/* ============================================================
   中国象棋 · 棋盘与棋子样式
   ============================================================ */

.cxq-board-wrap {
  --piece-size: 52px;
  position: relative;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* 棋子层 / 提示层 / 覆盖层 共用定位上下文 */
.cxq-pieces,
.cxq-hints,
.cxq-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cxq-pieces { z-index: 3; }
.cxq-overlay { z-index: 1; }
.cxq-hints { z-index: 2; }

/* ---- 棋子 ---- */
.cxq-piece {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--piece-size);
  height: var(--piece-size);
  pointer-events: auto;
  cursor: pointer;
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1),
              filter 0.2s ease;
  will-change: transform;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.cxq-piece-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-piece);
  font-size: calc(var(--piece-size) * 0.56);
  font-weight: 700;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* 棋子立体质感：外圈 + 内圈 + 高光 */
.cxq-piece.is-red .cxq-piece-inner {
  background:
    radial-gradient(circle at 32% 28%, #fff6e0 0%, #f3dfb4 45%, #e0c890 100%);
  color: var(--c-red-deep);
  box-shadow:
    inset 0 -3px 6px rgba(120, 70, 20, 0.35),
    inset 0 3px 6px rgba(255, 250, 230, 0.7),
    inset 0 0 0 2px var(--c-red-deep),
    inset 0 0 0 3px rgba(243, 223, 180, 0.9),
    inset 0 0 0 5px var(--c-red),
    0 4px 8px rgba(60, 40, 20, 0.35),
    0 1px 2px rgba(60, 40, 20, 0.4);
  text-shadow: 0 1px 0 rgba(255, 230, 200, 0.5);
}

.cxq-piece.is-black .cxq-piece-inner {
  background:
    radial-gradient(circle at 32% 28%, #fff6e0 0%, #f3dfb4 45%, #e0c890 100%);
  color: var(--c-ink);
  box-shadow:
    inset 0 -3px 6px rgba(120, 70, 20, 0.35),
    inset 0 3px 6px rgba(255, 250, 230, 0.7),
    inset 0 0 0 2px var(--c-ink),
    inset 0 0 0 3px rgba(243, 223, 180, 0.9),
    inset 0 0 0 5px #3a3735,
    0 4px 8px rgba(60, 40, 20, 0.35),
    0 1px 2px rgba(60, 40, 20, 0.4);
  text-shadow: 0 1px 0 rgba(255, 230, 200, 0.5);
}

/* 悬停 */
.cxq-piece:hover {
  filter: brightness(1.06);
  z-index: 10;
}

.cxq-piece:hover .cxq-piece-inner {
  transform: scale(1.06);
  box-shadow:
    inset 0 -3px 6px rgba(120, 70, 20, 0.35),
    inset 0 3px 6px rgba(255, 250, 230, 0.7),
    inset 0 0 0 2px var(--c-red-deep),
    inset 0 0 0 3px rgba(243, 223, 180, 0.9),
    inset 0 0 0 5px var(--c-red),
    0 8px 16px rgba(60, 40, 20, 0.45);
}

.cxq-piece.is-black:hover .cxq-piece-inner {
  box-shadow:
    inset 0 -3px 6px rgba(120, 70, 20, 0.35),
    inset 0 3px 6px rgba(255, 250, 230, 0.7),
    inset 0 0 0 2px var(--c-ink),
    inset 0 0 0 3px rgba(243, 223, 180, 0.9),
    inset 0 0 0 5px #3a3735,
    0 8px 16px rgba(60, 40, 20, 0.45);
}

/* 选中态：脉冲光晕 */
.cxq-piece.is-selected {
  z-index: 11;
  animation: pieceSelected 1.2s ease-in-out infinite;
}

.cxq-piece.is-selected .cxq-piece-inner {
  transform: scale(1.08);
}

.cxq-piece.is-selected::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px solid var(--c-red);
  opacity: 0.6;
  animation: selectRing 1.2s ease-out infinite;
}

.cxq-piece.is-black.is-selected::before {
  border-color: var(--c-ink);
}

@keyframes selectRing {
  0% { transform: scale(0.85); opacity: 0.8; }
  100% { transform: scale(1.25); opacity: 0; }
}

@keyframes pieceSelected {
  0%, 100% { filter: drop-shadow(0 0 4px rgba(192, 57, 43, 0.4)); }
  50% { filter: drop-shadow(0 0 12px rgba(192, 57, 43, 0.8)); }
}

/* 移动动画 */
.cxq-piece.is-moving {
  transition: transform 0.34s cubic-bezier(0.34, 1.4, 0.64, 1);
  z-index: 12;
}

.cxq-piece.is-moving .cxq-piece-inner {
  transform: scale(1.1);
}

/* 被吃动画 */
.cxq-piece.is-captured {
  animation: pieceCaptured 0.4s ease forwards;
  pointer-events: none;
  z-index: 9;
}

@keyframes pieceCaptured {
  0% { opacity: 1; transform: var(--captured-transform, translate(0, 0)) scale(1); }
  100% { opacity: 0; transform: var(--captured-transform, translate(0, 0)) scale(0.2) rotate(180deg); }
}

/* 落子弹性动画 */
@keyframes pieceLand {
  0% { transform: var(--land-from, scale(1.15)); }
  60% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

/* ---- 可走位置提示 ---- */
.cxq-hint {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-accent);
  transform: translate(-50%, -50%);
  opacity: 0.7;
  animation: hintPulse 1.4s ease-in-out infinite;
  pointer-events: none;
}

.cxq-hint::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--c-accent);
  opacity: 0.4;
  animation: hintRing 1.4s ease-out infinite;
}

@keyframes hintPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.7; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
}

@keyframes hintRing {
  0% { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* 可吃位置：环形目标标记 */
.cxq-hint.is-capture {
  width: var(--piece-size);
  height: var(--piece-size);
  background: transparent;
  border: 3px dashed var(--c-red);
  opacity: 0.85;
  animation: captureRing 1.2s linear infinite;
}

.cxq-hint.is-capture::after { display: none; }

@keyframes captureRing {
  0% { transform: translate(-50%, -50%) rotate(0); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ---- 上一步高亮 ---- */
.cxq-last-move {
  position: absolute;
  transform: translate(-50%, -50%);
  border-radius: 8px;
  background: rgba(192, 57, 43, 0.14);
  border: 1.5px solid rgba(192, 57, 43, 0.45);
  pointer-events: none;
  animation: lastMoveIn 0.4s ease;
}

@keyframes lastMoveIn {
  from { opacity: 0; transform: translate(-50%, -50%) scale(1.3); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

/* ---- 翻转（已通过 toPixel 数据层处理，此处仅保留钩子） ---- */
.cxq-pieces.is-flipped,
.cxq-hints.is-flipped,
.cxq-overlay.is-flipped {
  /* 翻转由 boardRenderer.toPixel 在数据层处理，无需 CSS 变换 */
}