#RavensQuiz-container {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

#puzzle-counter {
    font-size: 1rem;
    color: #555;
    margin-bottom: 8px;
}

#puzzle-img {
    max-width: 100%;
    max-height: 340px;
    border: 1px solid #ccc;
    border-radius: 4px;
    display: block;
    margin: 0 auto 16px auto;
}

#choices {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    justify-items: center;
    margin-bottom: 16px;
}

.choice-btn {
    background: #fff;
    border: 3px solid #ccc;
    border-radius: 6px;
    padding: 4px;
    cursor: pointer;
    transition: border-color 0.15s;
    width: 100%;
    max-width: 280px;
}

.choice-btn img {
    width: 100%;
    max-height: 160px;
    object-fit: contain;
    display: block;
}

.choice-btn:hover {
    border-color: #888;
}

.choice-btn.selected {
    border-color: #1a73e8;
    background: #e8f0fe;
}

#confirm-btn {
    padding: 10px 36px;
    font-size: 1rem;
    border-radius: 5px;
    border: none;
    background: #1a73e8;
    color: #fff;
    cursor: pointer;
    transition: background 0.15s;
}

#confirm-btn:disabled {
    background: #aaa;
    cursor: not-allowed;
}

#confirm-btn:not(:disabled):hover {
    background: #1558b0;
}