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

body {
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom, #1a1a2e, #16213e);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    max-width: 800px;
    width: 100%;
    text-align: center;
}

h1 {
    color: white;
    margin-bottom: 20px;
}

.game-container {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.game-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 1.2em;
    color: #333;
}

#gameCanvas {
    background: #000;
    border-radius: 5px;
    max-width: 100%;
    height: auto;
    margin-bottom: 20px;
}

.controls {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    justify-content: center;
}

.btn {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #45a049;
}

#pause-btn {
    background-color: #f44336;
}

#pause-btn:hover {
    background-color: #da190b;
}

#message {
    color: white;
    font-size: 18px;
    margin: 10px 0;
    min-height: 27px;
}

.back-button {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

.back-button:hover {
    background-color: #45a049;
}

@media (max-width: 600px) {
    .game-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 14px;
    }
}