/* course_desc.php — moved from its inline <style> block (loaded at the same position). */
.stat-card {
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.lesson-item {
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    border: 1px solid #e9ecef;
    transition: all 0.2s;
    background-color: #fff;
}

.lesson-item:hover {
    background-color: #f8f9fa;
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.lesson-item.completed {
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.lesson-item.completed:hover {
    background-color: #c3e6cb;
}

.assessment-item {
    padding: 1rem;
    border: 1px solid #e9ecef;
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    background-color: #fff;
}

.assessment-item.passed {
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.assessment-item.locked {
    background-color: #f8f9fa;
    border-color: #dee2e6;
    opacity: 0.7;
}

.card-group {
    display: flex !important;
    width: 100%;
}

.card-group .stat-card {
    flex: 1 1 0%;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    min-height: 140px;
    margin: 0 !important;
}

.card-group .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.card-group .stat-card:first-child {
    border-top-left-radius: 0.5rem !important;
    border-bottom-left-radius: 0.5rem !important;
    border-top-right-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
}

.card-group .stat-card:last-child {
    border-top-right-radius: 0.5rem !important;
    border-bottom-right-radius: 0.5rem !important;
    border-top-left-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
}

.card-group .stat-card:not(:first-child):not(:last-child) {
    border-radius: 0 !important;
}

.card-group .stat-card .card-body {
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.card-group .stat-card .fs-1 {
    font-size: 2.5rem !important;
    line-height: 1;
}

.card-group .stat-card h5 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0.5rem 0;
}

.card-group .stat-card small {
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

@media (max-width: 576px) {
    .card-group {
        flex-direction: row !important;
    }

    .card-group .stat-card {
        flex: 1 1 0% !important;
        margin: 0 !important;
        border-radius: 0 !important;
    }

    .card-group .stat-card:first-child {
        border-top-left-radius: 0.5rem !important;
        border-bottom-left-radius: 0.5rem !important;
    }

    .card-group .stat-card:last-child {
        border-top-right-radius: 0.5rem !important;
        border-bottom-right-radius: 0.5rem !important;
    }

    .card-group .stat-card .card-body {
        padding: 1rem 0.5rem;
    }

    .card-group .stat-card .fs-1 {
        font-size: 1.8rem !important;
    }

    .card-group .stat-card h5 {
        font-size: 1.25rem;
    }

    .card-group .stat-card small {
        font-size: 0.75rem;
    }
}

.lesson-item .badge {
    font-size: 0.65rem;
    padding: 0.25rem 0.5rem;
}