/* ==========================================================================
   Jogo da Velha — estilos específicos do tabuleiro 3x3
   ========================================================================== */

.ttt-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
}

.ttt-cell {
  aspect-ratio: 1 / 1;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 6vw, 2.4rem);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.1s ease;
  touch-action: manipulation;
}

.ttt-cell:hover:not(:disabled) {
  border-color: var(--accent);
}

.ttt-cell:disabled {
  cursor: default;
}

.ttt-cell.mark-o {
  color: var(--accent-2);
}

.ttt-cell.win-cell {
  background: var(--surface);
  border-color: var(--success);
  box-shadow: 0 0 12px rgba(74, 222, 128, 0.5);
}