/* xiangqi: rules used only by the xiangqi pages (loaded after base.css). */
/* Xiangqi board: a point-and-line grid, same technique as the Go board
   (a JS-enforced square-per-cell container, since `aspect-ratio` alone
   is silently ignored on some E-Ink browsers). */
.xq-board {
  position: relative;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  background: var(--square-light);
  border: 3px solid var(--border);
  box-sizing: border-box;
  padding: 6%;
}

.xq-grid {
  position: relative;
  width: 100%;
  height: 100%;
}

.xq-line {
  position: absolute;
  background: var(--border);
}

.xq-line-h {
  left: 0;
  right: 0;
  height: 2px;
  transform: translateY(-1px);
}

.xq-line-v {
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-1px);
}

/* The river is a band without vertical lines (it covers them), the
   palaces are told apart by their diagonal cross - neither needs a tint. */
.xq-river {
  position: absolute;
  left: 0;
  right: 0;
  background: var(--square-light);
}

.xq-palace {
  position: absolute;
  background: transparent;
}

/* The palace's diagonal cross - same stroke color and thickness as
   the board's own grid lines (.xq-line), so it stays clearly visible
   in grayscale on E-Ink rather than reading as a faint decoration. */
.xq-palace-diag {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.xq-palace-diag line {
  stroke: var(--border);
  stroke-width: 2;
}

.xq-point {
  position: absolute;
  transform: translate(-50%, -50%);
  background: transparent;
  border: none;
  border-radius: 50%;
  padding: 0;
  cursor: pointer;
  width: 11%;
  height: 11%;
}

.xq-point-movable::before {
  content: "";
  position: absolute;
  top: 30%;
  left: 30%;
  width: 40%;
  height: 40%;
  border-radius: 50%;
  background: var(--square-dark);
}

.xq-point-last-move::before {
  content: "";
  position: absolute;
  top: 10%;
  left: 10%;
  width: 80%;
  height: 80%;
  border: 2px dashed var(--muted);
  border-radius: 50%;
  box-sizing: border-box;
}

.xq-point-selected .xq-piece.xq-piece-filled {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
}

.xq-piece {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 88%;
  height: 88%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  box-sizing: border-box;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1;
}

.xq-piece-filled {
  background: #fdfdfd;
  border: 2px solid var(--border);
}

/* Red vs. Black is a color distinction, which doesn't exist at all on
   a monochrome E-Ink display - both used to render as similarly dark
   ink on the same light disc. Black pieces get their own solid dark
   disc instead (the same filled-vs-outlined trick already used for
   every other two-color game here), so which piece is whose reads
   from the disc itself, not from a hue. Classic-character text color
   and the symbol-style SVGs' own stroke color (in xiangqi-pieces.js) are
   flipped to match: dark ink on Red's light disc, light ink on
   Black's now-dark one. */
.xq-piece-black.xq-piece-filled {
  background: #111;
  border: 2px solid #000;
}

.xq-piece-red {
  color: #111;
}

.xq-piece-black {
  color: #fdfdfd;
}

.xq-piece svg {
  width: 68%;
  height: 68%;
}

/* Small disc icons for the color-choice picker and board placeholder,
   matching the board's own piece styling. */
.xq-icon-disc {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.3em;
  height: 1.3em;
  border-radius: 50%;
  vertical-align: middle;
  box-sizing: border-box;
  background: #fdfdfd;
  border: 2px solid var(--border);
  font-size: 0.7em;
  font-weight: 700;
  line-height: 1;
}

.xq-icon-disc-red {
  color: #111;
}

/* Same dark-filled-disc treatment as the board's own pieces - shown
   side by side with the red icon in the color-choice picker, so it
   needs the same monochrome-safe distinction, not just a text-color
   change. */
.xq-icon-disc-black {
  background: #111;
  border-color: #000;
  color: #fdfdfd;
}