* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  height: 100vh;
  width: 100%;
  background: linear-gradient(
    90deg,
    rgba(128, 128, 128, 1) 0%,
    rgba(200, 200, 200, 1) 100%
  );
}

.titulo {
  font-size: 50px;
  background-color: #fff;
  padding: 10px 20px;
}

.board {
  display: grid;
  width: 100%;
  height: 100%;
  display: grid;
  justify-content: center;
  align-content: center;
  justify-items: center;
  align-items: center;
  grid-template-columns: repeat(3, auto);
}

.board.x .cell:not(.x):not(.circle):hover::after,
.board.x .cell:not(.x):not(.circle):hover::before,
.board.circle .cell:not(.x):not(.circle):hover::after,
.board.x .cell:not(.x):not(.circle):hover::before {
  background: rgba(255, 255, 255, 0.3) !important;
}

.board_index {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 50px;
}

.board_index button {
  padding: 10px 20px;
  font-size: 30px;
  cursor: pointer;
  margin-top: 20px;
  border: 2px solid #333;
  background-color: #ccc;
  border-radius: 5px;
}

.board_index button:hover {
  background-color: #f0f0f0;
}
.imagem-jogo {
  margin: 50px;
  width: 200px;
  height: auto;
}

.centralizar-botao {
  padding: 10px 30px;
  font-size: 30px;
  background-color: #f44336; /* Cor vermelha para SAIR */
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  margin-bottom: 30px;
}

.centralizar-botao:hover {
  background-color: #fff;
  color: #000;
}
/* Célula */
.cell {
  width: 100px;
  height: 100px;
  border: 2px solid white;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.cell.x,
.cell.circle {
  cursor: not-allowed;
}

.cell:nth-child(1),
.cell:nth-child(2),
.cell:nth-child(3) {
  border-top: none;
}

.cell:nth-child(1),
.cell:nth-child(4),
.cell:nth-child(7) {
  border-left: none;
}

.cell:nth-child(7),
.cell:nth-child(8),
.cell:nth-child(9) {
  border-bottom: none;
}

.cell:nth-child(3),
.cell:nth-child(6),
.cell:nth-child(9) {
  border-right: none;
}

/* X */
.cell.x::before,
.cell.x::after,
.board.x .cell:not(.x):not(.circle):hover::after,
.board.x .cell:not(.x):not(.circle):hover::before {
  content: "";
  height: calc(100px * 0.15);
  width: calc(100px * 0.9);
  background: white;
  position: absolute;
}

.cell.x::before,
.board.x .cell:not(.x):not(.circle):hover::before {
  transform: rotate(45deg);
}

.cell.x::after,
.board.x .cell:not(.x):not(.circle):hover::after {
  transform: rotate(-45deg);
}

/* Circle */
.cell.circle::before,
.cell.circle::after,
.board.circle .cell:not(.x):not(.circle):hover::after,
.board.circle .cell:not(.x):not(.circle):hover::after {
  content: "";
  height: calc(100px * 0.9);
  width: calc(100px * 0.9);
  background: white;
  position: absolute;
  border-radius: 50%;
}

/* Mensagem de Vitória */
.winning-message {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  justify-content: center;
  align-items: center;
  background-color: rgba(0, 0, 0, 0.8);
  flex-direction: column;
}

.winning-message-button {
  font-size: 2.5rem;
  background-color: rgba(65, 185, 131, 1);
  padding: 10px 15px;
  cursor: pointer;
  border-radius: 5px;
  border: none;
  margin-top: 16px;
  color: white;
}

.winning-message-button:hover {
  color: rgba(65, 185, 131, 1);
  background-color: white;
}

.winning-message-text {
  color: white;
  font-size: 5rem;
}

.show-winning-message {
  display: flex;
}
footer {
  width: 100%;
  text-align: center;
  margin-top: 40px;
  padding-bottom: 20px;
}