.courses-section {
  background-color: #0d0d0d;
  padding: 60px 0;
  color: #fff;
}

.certi_header {
  text-align: center;
}

.certi_title {
  font-size: 2.3rem;
  font-weight: 700;
  background: linear-gradient(90deg, #4ecdc4, #4e8bcd);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.certi_title-main {
  color: #fff;
}

.certi_title-accent {
  color: #4ecdc4;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 30px;
  padding: 20px;
  list-style: none;
  margin: 0;
}

.card {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background-color: #1c1c1c;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 191, 255, 0.3);
}

.card__image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
}

.card__overlay {
  padding: 20px;
}

.card__header {
  display: flex;
  align-items: center;
  gap: 15px;
}

.card__thumb {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #00BFFF;
}

.card__header-text {
  display: flex;
  flex-direction: column;
}

.card__title {
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  margin: 0;
}

.card__status {
  font-size: 0.85rem;
  color: #b0b0b0;
}

@media (max-width: 768px) {
  .card__title {
    font-size: 0.95rem;
  }
  .cards {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
  }
}