.acm-lesson--hidden {
    opacity: 0.4;
    max-height: 44px;
    overflow: hidden;
    pointer-events: none;
    cursor: not-allowed;
    position: relative;
    display: flex;
    align-items: center;
}

.acm-lesson--hidden > * {
    display: none !important;
}

.acm-lesson--hidden::after {
    content: "Not related to quiz";
    display: block;
    font-style: italic;
    opacity: 1;
    padding: 10px 12px;
}

.acm-view-full .acm-lesson--hidden {
    opacity: 0.4;
    max-height: 44px;
    overflow: hidden;
    pointer-events: none;
    cursor: not-allowed;
    display: flex;
    align-items: center;
}

.acm-view-full .acm-lesson--hidden > * {
    display: none !important;
}

.acm-view-full .acm-lesson--hidden::after {
    content: "Not related to quiz";
    display: block;
}

.acm-course-filter-controls {
    display: flex;
    gap: 12px;
    align-items: center;
    margin: 16px 0;
}

.acm-personalize-prompt {
    margin: 16px auto;
    max-width: 360px;
    width: 100%;
    padding: 16px;
    border: 1px solid #ede7dd;
    border-radius: 12px;
    background: #fff;
    text-align: left;
    display: flex;
    flex-direction: column;
}

.acm-personalize-prompt__title {
    margin: 0 0 8px;
    color: #24384f;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.2;
}

.acm-personalize-prompt__text {
    margin: 0 0 16px;
    color: #5a5f66;
    font-size: 13px;
    font-weight: 400;
    line-height: 1.35;
}

.acm-personalize-prompt p {
    margin: 0 0 8px;
}

.acm-personalize-prompt__button {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.acm-quiz-page-shell {
    max-width: 920px;
    margin: 32px auto;
    padding: 0 16px;
}

.acm-personalization-quiz-wrap,
.acm-personalization-quiz-wrap * {
    font-family: 'Montserrat', sans-serif;
}

.acm-personalization-quiz-wrap input,
.acm-personalization-quiz-wrap button,
.acm-personalization-quiz-wrap select,
.acm-personalization-quiz-wrap textarea {
    font-family: inherit;
}

.acm-quiz-card {
    background: #ffffff;
    border: 1px solid #ede7dd;
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
}

.acm-quiz-header {
    margin-bottom: 16px;
    border-bottom: 1px solid #ede7dd;
    padding-bottom: 16px;
}

.acm-quiz-header h2 {
    margin: 0 0 8px;
    color: #555a5a;
    font-size: 30px;
    line-height: 1.2;
}

.acm-quiz-header p {
    margin: 0;
    color: #666;
}

.acm-personalize-prompt--quiz-page {
    background: #f4eee4;
    border: 1px solid #ede7dd;
    border-radius: 10px;
    padding: 12px 14px;
}

.quiz-question {
    border: 1px solid #ede7dd;
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 14px;
    background: #fff;
}

.quiz-question h3 {
    margin: 0 0 10px;
    font-size: 18px;
    color: #555a5a;
}

.acm-quiz-options {
    display: grid;
    gap: 8px;
}

.acm-quiz-options--inline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.acm-quiz-options--stacked {
    grid-template-columns: 1fr;
}

.acm-quiz-option {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    border: 1px solid #ede7dd;
    border-radius: 10px;
    padding: 10px 12px;
    cursor: pointer;
    transition: border-color .2s ease, background-color .2s ease;
}

.acm-quiz-option:hover {
    border-color: #d6c3b2;
    background: #fdfbf8;
}

.acm-quiz-option input[type="radio"] {
    margin-top: 3px;
}

.acm-quiz-option span {
    color: #555a5a;
    line-height: 1.4;
}

.acm-quiz-actions {
    margin-top: 18px;
}

.acm-quiz-success,
.acm-quiz-error,
.acm-quiz-retake-state {
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 14px;
}

.acm-quiz-success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.acm-quiz-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.acm-quiz-retake-state {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

@media (max-width: 767px) {
    .acm-quiz-card {
        padding: 16px;
    }

    .acm-quiz-header h2 {
        font-size: 24px;
    }

    .acm-quiz-options--inline {
        grid-template-columns: 1fr;
    }
}