body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

.container {
    text-align: center;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.game-area {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    margin-top: 20px;
}

#board {
    display: grid;
    border: 2px solid #333;
    background-color: #ddd;
    grid-template-rows: repeat(2, 50px);
}

.tile-area {
    margin-left: 20px;
    padding: 10px;
    border: 1px dashed #999;
}

.tile {
    width: 100px;
    height: 50px;
    background-color: #4CAF50;
    border: 1px solid #388E3C;
    margin: 5px;
    cursor: grab;
}

.tile.vertical {
    width: 50px;
    height: 100px;
}

.board-cell {
    width: 50px;
    height: 50px;
    border: 1px solid #aaa;
    box-sizing: border-box;
}

.occupied {
    background-color: #4CAF50;
}

#start-game {
    padding: 8px 16px;
    font-size: 16px;
    cursor: pointer;
}

.message-area {
    margin-top: 20px;
}