body {
    background-color: #202028;
    color: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.game-container {
    display: flex;
    background-color: #333340;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.left-panel {
    margin-right: 20px;
}

canvas#tetris {
    background-color: #000;
    border: 2px solid #555;
    border-radius: 4px;
}

.right-panel {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    width: 140px;
}

.score-board, .next-piece, .controls {
    margin-bottom: 20px;
}

h2 {
    font-size: 16px;
    margin: 0 0 10px 0;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#score {
    font-size: 24px;
    font-weight: bold;
    color: #4CAF50;
    background: #222;
    padding: 10px;
    text-align: center;
    border-radius: 5px;
    border: 1px solid #444;
}

canvas#next-piece-canvas {
    background-color: #000;
    border: 2px solid #555;
    border-radius: 4px;
}

.controls p {
    font-size: 13px;
    color: #888;
    margin: 5px 0;
}

#restart-btn {
    background-color: #f44336;
    color: white;
    border: none;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: background-color 0.3s;
}

#restart-btn:hover {
    background-color: #d32f2f;
}