body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #fff;
  color: #333;
}

/* Navbar */
nav {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  box-sizing: border-box;
}

.navlinks a {
  text-decoration: none;
  color: #059669; /* emerald green */
  font-weight: 500;
  margin: 0 10px;
}

.cta {
  background: linear-gradient(90deg, #059669, #34d399); /* emerald gradient */
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Header */
.course-header {
  text-align: center;
  padding: 60px 20px;
  background: #ecfdf5; /* soft emerald tint */
}

.course-header h2 {
  font-size: 2.5rem;
  color: #059669;
}

.course-header p {
  font-size: 1.2rem;
  color: #555;
  margin-top: 10px;
}

/* Content */
.course-content {
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
}

.course-content h3 {
  color: #059669;
  margin-bottom: 10px;
}

.course-content p {
  line-height: 1.6;
  margin-bottom: 20px;
}

.enroll {
  text-align: center;
  margin-top: 40px;
}

/* Footer */
footer {
  background: #059669;
  color: #fff;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    align-items: flex-start;
    padding: 15px;
    gap: 10px;
  }

  .navlinks {
    margin: 10px 0;
  }

  .cta {
    align-self: flex-start;
  }
}