body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  background: #f5f7fb;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #4a00e0, #8e2de2);
  color: #fff;
  text-align: center;
  padding: 80px 20px;
}

.hero h1 {
  font-size: 36px;
  margin-bottom: 10px;
}

.btn-primary {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 25px;
  background: #fff;
  color: #4a00e0;
  border-radius: 6px;
  font-weight: 600;
}

/* FILTER */
.filter-bar {
  display: flex;
  gap: 10px;
  padding: 20px;
  justify-content: center;
  background: #fff;
}

.filter-bar input,
.filter-bar select {
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #ddd;
}

/* SECTION */
.section {
  padding: 40px 20px;
}

.section h2 {
  text-align: center;
  margin-bottom: 30px;
}

/* COURSE CARD */
.course-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.course-card {
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  position: relative;
}

.badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #ff4d4d;
  color: #fff;
  padding: 5px 10px;
  font-size: 12px;
  border-radius: 4px;
}

.price {
  font-size: 20px;
  font-weight: bold;
  margin: 10px 0;
}

.price span {
  text-decoration: line-through;
  color: #888;
  font-size: 14px;
  margin-left: 8px;
}

.course-card ul {
  padding: 0;
  list-style: none;
}

.course-card ul li {
  margin: 5px 0;
}

.btn-enroll {
  display: block;
  text-align: center;
  margin-top: 15px;
  padding: 10px;
  background: #4a00e0;
  color: #fff;
  border-radius: 6px;
}

/* CATEGORY */
.light-bg {
  background: #eef2ff;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
  gap: 20px;
}

.category-card {
  background: #fff;
  padding: 30px;
  text-align: center;
  border-radius: 10px;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}