body {
  font-family: 'Montserrat', sans-serif;
  margin: 0;
  color: #222;
  background: #fff;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 20px;
}

.course-hero {
  text-align: center;
  margin-bottom: 30px;
}

.course-hero h1 {
  font-size: 1.8em;
  margin-bottom: 10px;
}

.course-hero p {
  font-size: 1.1em;
  font-weight: 500;
  color: #333;
}

.course-description,
.course-includes,
.course-project,
.course-details {
  margin-bottom: 30px;
  padding: 20px;
  background-color: #f8f8f8;
  border-radius: 8px;         
}

.course-includes ul,
.course-project ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.course-includes li,
.course-project li {
  padding-left: 24px;
  position: relative;
  margin-bottom: 8px;
  line-height: 1.5;
  color: #444;
}

.course-includes li::before,
.course-project li::before {
  content: "✓"; 
  position: absolute;
  left: 0;
  color: #999;
  font-weight: bold;
}

h2 {
  font-size: 1.4em;
  color: #111;
  margin-bottom: 10px;
  border-left: 4px solid #111; 
  padding-left: 10px;
}

p {
  font-size: 1em;
  line-height: 1.6;
  color: #444;
}

.back-to-courses {
  text-align: center;
  margin-top: 30px;
}

.btn-back {
  display: inline-block;
  background: #111;
  color: #fff;
  text-decoration: none;
  padding: 10px 20px;
  font-size: 0.95em;
  border-radius: 4px;
  transition: background 0.3s ease;
}

.btn-back:hover {
  background: #333;
}

.course-project + .course-project {
  margin-top: -20px;
}

@media (max-width: 768px) {
  main {
    padding-top: 10px;
  }
  .course-hero h1 {
    font-size: 1.5em;
  }
  .course-hero p {
    font-size: 1em;
  }
  .course-includes li,
  .course-project li {
    font-size: 0.95em;
  }
}