/* HEADER */
.elearn-header {
    background: linear-gradient(135deg, #2e7d32, #66bb6a);
    color: white;
    padding: 30px 20px;
}

.elearn-header h1 {
    font-weight: bold;
    font-size: 32px;
}

.elearn-header p {
    opacity: 0.9;
    font-size: 14px;
}

.elearning-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.course-group-frame {
    background: #f5f7f6;
    border-radius: 20px;
    padding: 20px;
    position: relative;
}

/* มือถือ */
@media (max-width: 576px) {
    .course-group-frame {
        padding: 15px;
    }
}

/* หัวข้อ */
.group-title {
    font-size: 22px;
    font-weight: bold;
    color: #1b5e20;
    display: inline-block;
    margin-bottom: 20px;
    border-bottom: 4px solid #66bb6a;
    padding-bottom: 5px;
}

/* มือถือ */
@media (max-width: 576px) {
    .group-title {
        font-size: 18px;
    }

    .course-name {
        font-size: 14px;
    }
}

.course-flex-wrapper {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Tablet */
@media (max-width: 992px) {
    .course-flex-wrapper {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 576px) {
    .course-flex-wrapper {
        grid-template-columns: 1fr;
    }
}

/* card */
.course-card {
    min-width: 260px;
    background: #fff;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    transition: 0.3s;
    width: 100%;
    padding: 15px;
}

.course-card:hover {
    transform: translateY(-5px);
}

/* เส้นเขียวซ้าย */
.course-name {
    font-size: 16px;
    font-weight: 600;
    margin: 30px 0;

    color: #333;
    line-height: 1.5;
    border-left: 5px solid #4caf50;
    border-image: linear-gradient(to bottom, #1b5e20, #81c784) 1;
    padding-left: 15px;
    margin-bottom: 25px;
    flex-grow: 1; /* ยืดพื้นที่เพื่อดันปุ่มลงไปล่างสุดเสมอ */
    display: flex;
    align-items: center;
    min-height: 60px;
}

/* badge */
.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #ffe0b2;
    color: #e65100;
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 12px;
}

/* ปุ่ม */
.btn-learn {
    display: block;
    text-align: center;
    background: linear-gradient(90deg, #1aa3a8, #0f7c82);
    color: #fff;
    padding: 10px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
    padding: 12px;
    font-size: 14px;
}