* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    height: 100vh;
    width: 100vw;
    background: linear-gradient(
      90deg,
      rgb(49, 38, 70) 0%,
      rgb(61, 10, 77) 100%
    );
  }
  
  .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;
  }
  
  /* 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;
  }