body {
    font-family: Lora, "Helvetica Neue", Helvetica, Arial, sans-serif;
    text-align: center;
    background-image: url('img/camouflage-pattern.jpg'); /* Updated to camouflage pattern */
    background-size: cover;
    background-attachment: fixed;
    color: #F5F5F5; /* Light text for contrast */
    margin: 0;
    padding: 0;
    animation: fadeIn 1s ease-in-out;
}

.container {
    max-width: 900px;
    margin: 50px auto;
    background: rgba(34, 34, 34, 0.85); /* Dark gray with transparency */
    padding: 30px;
    border-radius: 15px;
    border: 3px solid #A67B5B; /* Coyote brown border */
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.5);
    animation: fadeIn 1s ease-in-out;
}

.card {
    display: block;
    width: 80%;
    padding: 20px;
    margin: 10px auto;
    background-color: #FFF;
    border: 2px solid #6B8E23; /* Olive drab for military theme */
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1);
}

.card.selected {
    background-color: #A67B5B; /* Coyote brown for selected cards */
}

.card.incorrect {
    background-color: #CD5C5C; /* Indian red */
}

h1, h2 {
    font-family: Montserrat, "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #A67B5B; /* Coyote brown */
    text-shadow: 2px 2px 5px #000;
}

button {
    padding: 12px 20px;
    border: none;
    color: white;
    cursor: pointer;
    border-radius: 8px;
    font-weight: bold;
    background-color: #6B8E23; /* Olive drab for buttons */
    transition: transform 0.2s, background-color 0.2s;
}

button:hover {
    background-color: #556B2F; /* Darker olive drab for hover effect */
    transform: scale(1.05);
}

button.correct {
    background-color: #A67B5B; /* Coyote brown for correct answers */
}

button.incorrect {
    background-color: #CD5C5C; /* Indian red for incorrect answers */
}

.options button {
    margin: 10px;
    font-size: 1em;
}

.score {
    font-size: 1.2em;
    font-weight: bold;
}

.high-score {
    color: #A67B5B; /* Coyote brown for high score */
}

#rankDisplay {
    font-size: 1.4em;
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
}

#rankImage {
    max-width: 30px;
    margin-left: 10px;
}

#gameContainer {
    display: none;
}

#mainContainer {
    display: block;
}

#currentRankImage {
    max-width: 40px;
    margin-top: 10px;
    display: inline-block;
    vertical-align: middle; /* Vertical alignment */
}

#questionImage {
    max-width: 300px; /* Large question image */
    margin-top: 20px;
    margin-bottom: 20px;
}

#rankBox {
    display: inline-block;
    vertical-align: top;
    margin-top: 10px;
}

#currentRankText {
    display: inline-block;
    vertical-align: middle; /* Vertical alignment */
}

.score-container {
    background-color: rgba(255, 255, 255, 0.1); /* Transparent white */
    border: 3px solid #A67B5B; /* Coyote brown border */
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.3);
    text-align: left;
}

.score-container h2 {
    margin-top: 0;
    color: #A67B5B; /* Coyote brown */
}

.score-container p {
    margin: 5px 0;
}

.score-details {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
}

.score-item {
    display: flex;
    align-items: center;
    margin: 10px;
}

.score-icon {
    width: 24px;
    height: 24px;
    margin-right: 10px;
}

.rank-display {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 10px;
}

.rank-display img {
    max-width: 50px;
    margin-left: 10px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
        margin: 20px auto;
    }

    button {
        padding: 10px;
        font-size: 0.9em;
    }

    h1, h2 {
        font-size: 1.5em;
    }

    .score {
        font-size: 1em;
    }

    #rankDisplay {
        font-size: 1.2em;
    }

    #currentRankImage {
        max-width: 30px;
    }

    #questionImage {
        max-width: 100%;
    }

    .score-container {
        padding: 10px;
    }

    .options {
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr)); /* Adjust grid for smaller screens */
        gap: 5px; /* Adjust gap for smaller screens */
    }

    .options button {
        padding: 8px; /* Adjust padding for smaller screens */
        font-size: 0.8em; /* Adjust font size for smaller screens */
    }

    .rank-display img {
        max-width: 40px;
    }
}