/* shogi: rules used only by the shogi pages (loaded after base.css). */
/* Shogi board: a 9x9 float-grid (same technique as the chess/checkers/
   Connect Four boards - a JS-enforced square cell size, since CSS
   `aspect-ratio` is unreliable on E-Ink browsers). Pieces are plain
   pentagons carrying their kanji, rotated 180deg for White - so which
   side a piece belongs to is a shape fact, not a color fact, and
   promoted pieces get their own traditional single-kanji abbreviation
   instead of red ink. Both choices make this one of the more naturally
   E-Ink-friendly games here already, without needing a color fix. */
#shogi-board {
  display: block;
  width: 100%;
  max-width: 620px;
  border: 3px solid var(--border);
  background: var(--square-light);
  box-sizing: border-box;
  overflow: hidden;
  margin: 0 auto;
}

.shogi-square {
  width: calc(100% / 9);
  background: var(--square-light);
  border: 1px solid var(--border);
}

.shogi-square-movable {
  background: linear-gradient(135deg, var(--text) 0, var(--text) 12px, transparent 12px) var(--square-dark);
}

.shogi-square-last-from,
.shogi-square-last-to {
  box-shadow: inset 0 0 0 2px var(--accent);
}

.shogi-square-check {
  background: var(--square-dark);
}

.shogi-piece {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80%;
  height: 84%;
  transform: translate(-50%, -50%);
  clip-path: polygon(50% 0%, 92% 26%, 100% 100%, 0% 100%, 8% 26%);
  background: var(--square-light);
  border: 2px solid var(--border);
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.shogi-piece svg {
  width: 80%;
  height: 80%;
  /* The pentagon is wider at the bottom, so the kanji sit a little low. */
  margin-top: 8%;
}

/* Etwas kräftigere Striche: feine Pinselstriche (z. B. 金 gegenüber 全)
   verschwimmen auf E-Ink sonst. !important, weil die Grafiken ihre
   Strichstärke als Inline-Stil mitbringen. */
.shogi-piece svg path {
  stroke: #000 !important;
  stroke-width: 0.45 !important;
  stroke-linejoin: round;
}

.shogi-piece-w {
  transform: translate(-50%, -50%) rotate(180deg);
}

/* Small pentagon icons for the color-choice picker and board
   placeholder, matching the board's own piece styling. */
.shogi-icon-piece {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.4em;
  height: 1.4em;
  clip-path: polygon(50% 0%, 92% 26%, 100% 100%, 0% 100%, 8% 26%);
  background: var(--square-light);
  border: 2px solid var(--border);
  box-sizing: border-box;
  vertical-align: middle;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--muted);
}

.shogi-icon-piece-w {
  transform: rotate(180deg);
}

/* Captured pieces switch sides and join the capturing player's hand -
   shown as a row of labelled buttons above/below the board, since they
   have no board square of their own until dropped. */
.shogi-hand {
  display: flex;
  flex-wrap: wrap;
justify-content: center;
  max-width: 620px;
  margin: 0 auto 0.4rem;
}

/* Flexbox `gap` fallback: margin-based spacing instead, since some E-Ink browsers (Tolino confirmed) don't support `gap` on a flex container and render items with zero space between them. */
/* Captured pieces switch sides and join the capturing player's hand -
   shown as a row of labelled buttons above/below the board > *, since they
   have no board square of their own until dropped. */
.shogi-hand > * {
  margin: 0 0.3rem 0.3rem 0;
}

/* Captured pieces switch sides and join the capturing player's hand -
   shown as a row of labelled buttons above/below the board > *:last-child, since they
   have no board square of their own until dropped. */
.shogi-hand > *:last-child {
  margin-right: 0;
}

.shogi-hand-piece {
  display: flex;
  align-items: center;
padding: 0.25rem 0.5rem;
  border: var(--border-width) solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  font: inherit;
  cursor: pointer;
  box-sizing: border-box;
}

/* Flexbox `gap` fallback: margin-based spacing instead, since some E-Ink browsers (Tolino confirmed) don't support `gap` on a flex container and render items with zero space between them. */
.shogi-hand-piece > * {
  margin: 0 0.25rem 0.25rem 0;
}

.shogi-hand-piece > *:last-child {
  margin-right: 0;
}

.shogi-hand-piece:disabled {
  opacity: 0.4;
  cursor: default;
}

/* Selected hand piece: the grey plus the site's usual selection frame
   (3 px solid, like .square.selected) - neither the corner triangle of
   "can move" nor the thin inner frame of "last move". */
.shogi-hand-piece-selected {
  background: var(--square-dark);
  outline: 3px solid var(--text);
  outline-offset: 2px;
}

.shogi-hand-piece-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8em;
  height: 1.8em;
  clip-path: polygon(50% 0%, 92% 26%, 100% 100%, 0% 100%, 8% 26%);
  background: var(--square-light);
  border: 2px solid var(--border);
  box-sizing: border-box;
}

.shogi-hand-piece-label svg {
  /* The drawings carry generous empty margins of their own, so they are
     scaled past the label's box; the pentagon clip trims only blank space. */
  flex: none;
  width: 118%;
  height: 118%;
  margin-top: 12%;
}

/* Same slightly heavier strokes as on the board (see .shogi-piece svg path). */
.shogi-hand-piece-label svg path {
  stroke: #000 !important;
  stroke-width: 0.45 !important;
  stroke-linejoin: round;
}

.shogi-hand-piece.shogi-piece-w .shogi-hand-piece-label {
  transform: rotate(180deg);
}

.shogi-hand-piece-count {
  font-weight: 700;
  font-size: 0.85rem;
}

.shogi-promotion-prompt {
  display: flex;
  align-items: center;
  justify-content: center;
margin-top: 0.5rem;
  flex-wrap: wrap;
}

/* Flexbox `gap` fallback: margin-based spacing instead, since some E-Ink browsers (Tolino confirmed) don't support `gap` on a flex container and render items with zero space between them. */
.shogi-promotion-prompt > * {
  margin: 0 0.6rem 0.6rem 0;
}

.shogi-promotion-prompt > *:last-child {
  margin-right: 0;
}