/* Shared styles for lessons and exams */
.lessons-container, .exams-container {
    margin: 20px 0;
}

.lessons-filter, .exams-filter {
    margin-bottom: 20px;
}

.lessons-filter select, .exams-filter select {
    padding: 8px 12px;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #fff;
    min-width: 200px;
}

.lessons-list, .exams-list {
    display: grid;
    gap: 20px;
}

.lesson-item, .exam-item {
    border: 1px solid #e1e1e1;
    border-radius: 8px;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.lesson-item:hover, .exam-item:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.lesson-title, .exam-title {
    margin: 0 0 10px 0;
    font-size: 20px;
    font-weight: 600;
}

.lesson-title a, .exam-title a {
    color: #0073aa;
    text-decoration: none;
}

.lesson-title a:hover, .exam-title a:hover {
    text-decoration: underline;
}

.lesson-categories, .exam-categories {
    margin-bottom: 10px;
}

.lesson-category-tag, .exam-category-tag {
    display: inline-block;
    background-color: #f0f0f1;
    color: #50575e;
    padding: 3px 8px;
    margin-right: 5px;
    margin-bottom: 5px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 500;
}

.exam-category-tag {
    background-color: #e8f4f8;
    color: #0073aa;
}

.lesson-excerpt, .exam-excerpt {
    color: #666;
    line-height: 1.5;
    margin-bottom: 10px;
}

.lesson-meta, .exam-meta {
    color: #999;
    font-size: 13px;
    border-top: 1px solid #f0f0f1;
    padding-top: 10px;
}

.no-lessons, .no-exams {
    text-align: center;
    color: #666;
    font-style: italic;
    padding: 40px 20px;
}

.lessons-categories-list, .exams-categories-list {
    margin: 20px 0;
}

.lessons-categories-list ul, .exams-categories-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lessons-categories-list li, .exams-categories-list li {
    margin-bottom: 8px;
}

.lessons-categories-list a, .exams-categories-list a {
    color: #0073aa;
    text-decoration: none;
    padding: 5px 0;
    display: inline-block;
}

.lessons-categories-list a:hover, .exams-categories-list a:hover {
    text-decoration: underline;
}

.category-count {
    color: #999;
    font-size: 0.9em;
    margin-left: 5px;
}

.error {
    color: #d63638;
    font-weight: 500;
}