body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(to bottom, #1a1a2e, #16213e);
    font-family: Arial, sans-serif;
}

.game-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.game-container {
    position: relative;
    width: 600px;
    height: 600px;
}

#gameCanvas {
    width: 100%;
    height: 100%;
    border: 2px solid #fff;
    display: block;
}

#score {
    position: absolute;
    top: 20px;
    left: 20px;
    color: white;
    font-size: 24px;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.start-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(26, 26, 46, 0.9);
    color: white;
}

.start-screen h1 {
    font-size: 48px;
    margin-bottom: 30px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.start-button {
    padding: 15px 40px;
    font-size: 24px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

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

.back-button {
    color: white;
    text-decoration: none;
    font-size: 18px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    transition: background 0.3s ease;
}

.back-button:hover {
    background: rgba(255, 255, 255, 0.2);
}