body {
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
}

h1 {
  margin-bottom: 10px;
}

#score-board {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
  gap: 30px;
}

.game-container {
  display: grid;
  grid-template-columns: repeat(4, 80px);
  grid-template-rows: repeat(4, 80px);
  gap: 5px;
  justify-content: center;
  margin: 0 auto;
  position: relative;
}

.cell {
  width: 80px;
  height: 80px;
  background-color: #ccc;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  color: #333;
  border-radius: 5px;
}

/* Renkler */
.cell[data-value="2"] { background-color: #eee4da; color: #776e65; }
.cell[data-value="4"] { background-color: #ede0c8; color: #776e65; }
.cell[data-value="8"] { background-color: #f2b179; color: #fff; }
.cell[data-value="16"] { background-color: #f59563; color: #fff; }
.cell[data-value="32"] { background-color: #f67c5f; color: #fff; }
.cell[data-value="64"] { background-color: #f65e3b; color: #fff; }
.cell[data-value="128"] { background-color: #edcf72; color: #fff; }
.cell[data-value="256"] { background-color: #edcc61; color: #fff; }
.cell[data-value="512"] { background-color: #edc850; color: #fff; }
.cell[data-value="1024"] { background-color: #edc53f; color: #fff; }
.cell[data-value="2048"] { background-color: #edc22e; color: #fff; }

#game-over {
  position: absolute;
  top: 40%;
  left: 0;
  width: 100%;
  font-size: 32px;
  font-weight: bold;
  color: white;
  background-color: rgba(0, 0, 0, 0.6);
  padding: 20px;
  display: none;
  border-radius: 10px;
}
#scoreboard {
  font-size: 18px;
  margin: 10px auto;
  text-align: center;
  font-weight: bold;

}

#game-over {
  text-align: center;
  font-weight: bold;
  color: red;
}
#reset-btn {
  margin: 10px auto;
  display: block;
  padding: 10px 20px;
  font-size: 12px;
  cursor: pointer;
}

@media (max-width: 600px) {
  #game-container {
    width: 260px;
    display: grid;
    grid-template-columns: repeat(4, 60px);
    gap: 5px;
    margin: 0 auto;
  }

  .cell {
    width: 60px;
    height: 60px;
    font-size: 20px;
  }

  #scoreboard, #reset-btn, #game-over {
    font-size: 18px;
    text-align: center;
  }

  #reset-btn {
    margin: 10px auto;
  }
}
#arrow-buttons {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#arrow-buttons button.arrow {
  font-size: 24px;
  padding: 10px 20px;
  margin: 5px;
  cursor: pointer;
  border: none;
  background-color: #888;
  color: white;
  border-radius: 6px;
  transition: background-color 0.2s;
}

#arrow-buttons button.arrow:hover {
  background-color: #666;
}

@media (max-width: 600px) {
  #arrow-buttons button.arrow {
    font-size: 20px;
    padding: 8px 14px;
  }
}