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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 1rem;
}

.game-container {
    display: flex;
    gap: 2rem;
    padding: 1.5rem;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    max-width: 1200px;
    max-height: 95vh;
    margin: 0 auto;
    align-items: flex-start;
    overflow-y: auto;
}

.game-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 1rem;
    min-width: 280px;
    max-width: 320px;
    max-height: calc(95vh - 3rem);
    overflow-y: auto;
}

.score-container h2 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 1rem;
    text-align: center;
    padding: 1rem;
    background-color: #f8f8ff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.how-to-play {
    background-color: #f8f8f8;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

#gameCanvas {
    border: 3px solid #333;
    border-radius: 4px;
    background-color: #fff;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.how-to-play h3 {
    color: #333;
    margin-bottom: 1rem;
    border-bottom: 2px solid #ddd;
    padding-bottom: 0.5rem;
}

.info-section {
    margin-bottom: 1.5rem;
}

.info-section:last-child {
    margin-bottom: 0;
}

.info-section h4 {
    color: #444;
    margin-bottom: 0.8rem;
    font-size: 1rem;
    border-bottom: 1px solid #ddd;
    padding-bottom: 0.3rem;
}

.info-section p {
    margin: 0.5rem 0;
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
    padding-left: 0.5rem;
}

.info-section p.important {
    color: #2c5282;
    font-weight: bold;
    border-left: 3px solid #4299e1;
    padding-left: 0.7rem;
    margin: 1rem 0;
    background-color: #ebf8ff;
    padding: 0.5rem 0.7rem;
    border-radius: 0 4px 4px 0;
}

#gameCanvas {
    border: 2px solid #333;
    background-color: #fff;
}

.game-over {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

.game-over h2 {
    color: #333;
    margin-bottom: 1rem;
}

#restartButton {
    margin-top: 1rem;
    padding: 0.5rem 1.5rem;
    font-size: 1rem;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#restartButton:hover {
    background-color: #45a049;
}

.hidden {
    display: none;
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
    body {
        padding: 0.5rem;
    }

    .game-container {
        flex-direction: column;
        align-items: center;
        padding: 0.8rem;
        gap: 0.8rem;
        height: 100%;
        max-height: 100%;
    }

    .game-info {
        order: 2;
        width: 100%;
        max-width: none;
        gap: 0.8rem;
        max-height: 40vh;
    }

    .score-container h2 {
        font-size: 1.5rem;
        padding: 0.8rem;
    }

    .how-to-play {
        padding: 1rem;
    }

    .info-section {
        margin-bottom: 1rem;
        padding: 0.8rem;
        background: rgba(255, 255, 255, 0.9);
        border-radius: 6px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    }

    .info-section h4 {
        font-size: 1rem;
    }

    .info-section p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .game-container {
        padding: 0.5rem;
    }

    .game-info {
        padding: 0.5rem;
    }

    .score-container h2 {
        font-size: 1.3rem;
        padding: 0.5rem;
    }
}