#online-courses {
  padding: 20px;
  background-color: var(--card-background);
  color: var(--text-color);
  border-radius: var(--radius);
}

.card-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}

.course-card {
  width: 260px;
  background-color: var(--card-color);
  color: var(--text-color);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px var(--shadow-color);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.course-card:hover {
  transform: scale(1.03);
}

.course-image {
  width: 100%;
  max-height: 140px;
  object-fit: cover;
}

.course-details {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.course-title {
  font-size: 1.1em;
  font-weight: bold;
  margin: 0;
}

.course-instructor {
  font-size: 0.85em;
  font-style: italic;
}

.course-description {
  font-size: 0.85em;
  line-height: 1.4;
}

.course-link {
  text-decoration: none;
  padding: 8px 14px;
  background-color: var(--primary-color);
  color: var(--scroll-up-color);
  border-radius: 6px;
  font-weight: 500;
  text-align: center;
  transition: background-color var(--transition-speed);
}

.course-link:hover {
  background-color: var(--hover-color);
}

/* Media Queries */
@media (max-width: 768px) {
  .card-container {
    flex-direction: column;
    align-items: center;
  }

  .course-card {
    width: 100%;
    max-width: 320px;
  }
}