/* GLOBAL */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #0f172a;
    color: white;
}

/* CONTAINER */
.container {
    max-width: 700px;
    margin: auto;
    padding: 20px;
}

/* HEADINGS */
h1,
h2,
h3 {
    margin-bottom: 10px;
}

/* SUBJECT BUTTONS */
.subject-btn {
    display: block;
    width: 100%;
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    border: none;
    background: #22c55e;
    color: black;
    font-weight: bold;
    cursor: pointer;
}

/* QUIZ OPTIONS */
.option {
    background: #334155;
    padding: 12px;
    margin: 10px 0;
    border-radius: 6px;
    cursor: pointer;
}

.option:hover {
    background: #475569;
}

.selected {
    background: #22c55e !important;
    color: black;
}

/* BUTTONS */
button {
    padding: 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.next {
    background: #22c55e;
}

.prev {
    background: #3b82f6;
}

.submit {
    background: #ef4444;
}

/* BUTTON GROUP */
.button-group {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

/* RESULT */
.result-box {
    text-align: center;
    margin-top: 80px;
}

/* REVIEW */
.review {
    max-width: 700px;
    margin: auto;
    padding: 20px;
}

.correct {
    color: #22c55e;
    font-weight: bold;
}

.wrong {
    color: #ef4444;
    font-weight: bold;
}

/* MOBILE */
@media (max-width: 600px) {

    .container {
        padding: 15px;
    }

    h1 {
        font-size: 22px;
    }

    .option {
        font-size: 14px;
    }

    .button-group {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}