/* Popular Courses Section */
.popular-courses-section {
    width: 100%;
    padding: 50px 20px;
    background-color: #f5f7fb;
    box-sizing: border-box;
}

.popular-courses-section *,
.popular-courses-section *::before,
.popular-courses-section *::after {
    box-sizing: border-box;
}

/* Center the complete content */
.popular-courses-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Main title */
.popular-courses-title {
    margin: 0 0 35px;
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    color: #173b72;
}

/* Course cards layout */
.popular-courses-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    align-items: stretch;
}

/* Individual course card */
.popular-course-card {
    min-width: 0;
    padding: 24px 20px;
    background: #ffffff;
    border: 1px solid #e3e9f2;
    border-radius: 10px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
    transition: transform 0.25s ease,
                box-shadow 0.25s ease;
}

.popular-course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.10);
}

/* Category heading and See All link */
.popular-course-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid #edf1f7;
}

.popular-course-heading h3 {
    margin: 0;
    color: #173b72;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
}

.popular-course-heading > a {
    flex-shrink: 0;
    margin-top: 3px;
    color: #0879d9;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
}

.popular-course-heading > a:hover {
    color: #0056a8;
    text-decoration: underline;
}

/* Course links */
.popular-course-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.popular-course-card ul li {
    margin: 0 0 12px;
    padding: 0;
}

.popular-course-card ul li:last-child {
    margin-bottom: 0;
}

.popular-course-card ul li a {
    display: block;
    color: #526174;
    font-size: 15px;
    line-height: 1.6;
    text-decoration: none;
    overflow-wrap: anywhere;
    transition: color 0.2s ease,
                padding-left 0.2s ease;
}

.popular-course-card ul li a:hover {
    color: #0879d9;
    padding-left: 5px;
}

/* Center Check All Courses button */
.popular-courses-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 35px;
    text-align: center;
}

.check-all-courses {
    display: inline-block;
    padding: 13px 30px;
    background-color: #0879d9;
    color: #ffffff;
    border: 1px solid #0879d9;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    transition: background-color 0.2s ease,
                border-color 0.2s ease;
}

.check-all-courses:hover {
    background-color: #075ca6;
    border-color: #075ca6;
    color: #ffffff;
}

/* Tablet: two cards per row */
@media (max-width: 991px) {
    .popular-courses-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 20px;
    }

    .popular-courses-title {
        font-size: 28px;
    }
}

/* Mobile: one card per row */
@media (max-width: 575px) {
    .popular-courses-section {
        padding: 35px 15px;
    }

    .popular-courses-title {
        margin-bottom: 25px;
        font-size: 25px;
    }

    .popular-courses-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 18px;
    }

    .popular-course-card {
        padding: 22px 18px;
    }

    .popular-course-heading h3 {
        font-size: 18px;
    }
}