/* fourinarow: rules used only by the fourinarow pages (loaded after base.css). */
/* Connect Four board: same uniform-grid approach as Reversi (a real
   Connect Four board isn't checkered either) - 6 rows x 7 columns,
   with the whole column clickable, not just the empty landing cell. */
#fourinarow-board {
  display: block;
  width: 100%;
  max-width: 760px;
  border: 3px solid var(--border);
  background: var(--square-light);
  box-sizing: border-box;
  overflow: hidden;
  margin: 0 auto;
}

.c4-square {
  /* Overrides .square's own 12.5% (built for an 8-column board): with
     7 columns, that width made floats wrap after 8 cells instead of 7,
     desyncing every row from its logical column past the first one. */
  width: calc(100% / 7);
  background: var(--square-light);
  border: 1px solid var(--border);
}

.c4-square-movable {
  background: linear-gradient(135deg, var(--text) 0, var(--text) 12px, transparent 12px) var(--square-dark);
}

.c4-piece {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 78%;
  height: 78%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  box-sizing: border-box;
  pointer-events: none;
}

.c4-piece-black {
  background: #111;
  border: 2px solid #000;
}

.c4-piece-white {
  background: #fdfdfd;
  border: 2px solid var(--border);
}

/* Small disc icons for the color-choice picker and board placeholder,
   matching the board's own piece styling. */
.c4-icon-disc {
  display: inline-block;
  width: 1em;
  height: 1em;
  border-radius: 50%;
  vertical-align: middle;
  box-sizing: border-box;
}

.c4-icon-disc-black {
  background: #111;
  border: 2px solid #000;
}

.c4-icon-disc-white {
  background: #fdfdfd;
  border: 2px solid var(--border);
}