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

body {
    background-color: #2c3e50;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: Arial, sans-serif;
    color: #ecf0f1;
}

.game-container {
    background-color: #34495e;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.score {
    font-size: 24px;
    color: #e74c3c;
}

#start-btn {
    background-color: #2ecc71;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    color: white;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

#start-btn:hover {
    background-color: #27ae60;
}

#game-board {
    display: grid;
    grid-template-columns: repeat(20, 20px);
    grid-template-rows: repeat(20, 20px);
    gap: 1px;
    background-color: #2c3e50;
    border: 2px solid #95a5a6;
}

.snake {
    background-color: #e74c3c;
    border-radius: 4px;
}

.food {
    background-color: #f1c40f;
    border-radius: 50%;
}

.game-controls {
    margin-top: 20px;
    text-align: center;
    color: #bdc3c7;
}