/* General page styling */
body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    padding: 20px;
    margin: 0;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

/* Top controls */
#topic-select,
#mode-buttons {
    max-width: 700px;
    margin: 10px auto;
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

#topic-select label {
    font-weight: bold;
}

select {
    padding: 6px 8px;
    font-size: 14px;
}

/* Quiz box */
#quiz-box {
    background: #ffffff;
    padding: 20px;
    border-radius: 10px;
    max-width: 700px;
    margin: 20px auto;
    box-shadow: 0 0 10px #cccccc;
}

.hidden {
    display: none;
}

/* Question text */
#question {
    font-size: 18px;
    margin-bottom: 15px;
}

/* Choices */
.choice {
    background: #e8e8e8;
    padding: 10px;
    margin: 8px 0;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

.choice:hover {
    background: #dcdcdc;
}

.correct {
    background: #b6f7b0 !important;
}

.wrong {
    background: #ffb3b3 !important;
}

/* Hint & explanation */
#hint,
#explanation {
    margin-top: 10px;
    padding: 10px;
    border-radius: 6px;
    background: #f0f7ff;
    border: 1px solid #c5ddff;
}

/* Buttons */
button {
    margin-top: 10px;
    padding: 8px 14px;
    font-size: 14px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    background: #1976d2;
    color: white;
    transition: background 0.2s;
}

button:hover {
    background: #145ca4;
}