/* freecell: rules used only by the freecell pages (loaded after base.css). */
/* FreeCell board: free cells and foundations in a row above eight
   cascading tableau columns. Cards overlap via a negative margin
   rather than the float-grid/percentage-grid techniques used
   elsewhere, since a solitaire cascade is a variable-height stack, not
   a fixed board shape - the page simply scrolls if a column grows
   tall. The overlap is set in JS together with the card height
   (CardFaces.layoutColumns in card-faces.js) so each card's label band
   stays fully visible at any screen width. The red/black colour the
   stacking rule depends on is shown by fill instead of colour: red
   suits are drawn hollow, black suits filled (.card-suit below). */
.freecell-top-row {
  display: flex;
  justify-content: space-between;
max-width: 900px;
  margin: 0 auto 0.6rem;
  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. */
.freecell-top-row > * {
  margin: 0 1rem 1rem 0;
}

.freecell-top-row > *:last-child {
  margin-right: 0;
}

.freecell-freecells,
.freecell-foundations {
  display: flex;
}

/* 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. */
.freecell-freecells > *, .freecell-foundations > * {
  margin: 0 0.3rem 0.3rem 0;
}

.freecell-freecells > *:last-child, .freecell-foundations > *:last-child {
  margin-right: 0;
}

.freecell-cell {
  width: 2.6rem;
  height: 3.6rem;
  border: var(--border-width) solid var(--border);
  border-radius: 4px;
  background: #fff;
  font-weight: 700;
  font-size: 1rem;
  box-sizing: border-box;
  cursor: pointer;
}

.freecell-foundation-empty {
  color: var(--muted);
  font-weight: 400;
}

.freecell-cell-selected {
  outline: 3px solid var(--border);
  outline-offset: 1px;
}

.freecell-columns {
  display: flex;
max-width: 900px;
  margin: 0 auto;
  align-items: flex-start;
}

/* 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. */
.freecell-columns > * {
  margin: 0 0.4rem 0.4rem 0;
}

.freecell-columns > *:last-child {
  margin-right: 0;
}

.freecell-column {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* Height and overlap (margin-top) are set in JS from the measured
   column width (CardFaces.layoutColumns in card-faces.js) rather than
   CSS `aspect-ratio`, which some E-Ink browsers (Tolino confirmed)
   don't support reliably. display:flex keeps the label at the top of
   the button - a button centres its content vertically, which pushed
   the label under the next card. */
.freecell-card {
  position: relative;
  width: 100%;
  border: var(--border-width) solid var(--border);
  border-radius: 4px;
  background: #fff;
  box-sizing: border-box;
  display: flex;
  align-items: flex-start;
  padding: 0.2rem 0 0 0.3rem;
  text-align: left;
  font-weight: 700;
  font-size: 0.8rem;
  font-size: clamp(0.65rem, 2.4vw, 0.95rem);
  cursor: pointer;
}

.freecell-card:first-child {
  margin-top: 0;
}

.freecell-card-selected {
  outline: 3px solid var(--border);
  outline-offset: -2px;
}

.freecell-actions-row {
  display: flex;
  justify-content: center;
  margin-top: 0.6rem;
}

.freecell-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8em;
  height: 1.4em;
  border: 2px solid var(--border);
  border-radius: 3px;
  box-sizing: border-box;
  font-size: 0.65rem;
  font-weight: 700;
}

/* Hint (task 185): the card to move and the place for it. */
.freecell-hint {
  outline: 3px dashed var(--text);
  outline-offset: -3px;
}