:root {
  --primary-color: #2563eb;
  --secondary-color: #f1f5f9;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --background-color: #ffffff;
  --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--background-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.header,
.footer {
  background-color: var(--secondary-color);
  padding: 20px 0;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 0;
}

.method,
.course-details,
.instructor,
.cta-section {
  padding: 40px 0;
}

.method-card,
.course-card,
.instructor-card {
  background: white;
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  transition: transform 0.3s ease;
}

.method-card:hover,
.course-card:hover,
.instructor-card:hover {
  transform: translateY(-5px);
}

.price-section {
  background: var(--primary-color);
  color: white;
  border-radius: 20px;
  padding: 20px;
  text-align: center;
}

.btn-cta {
  background: var(--primary-color);
  color: white;
  border-radius: 50px;
  padding: 10px 20px;
  transition: background 0.3s ease;
}

.btn-cta:hover {
  background: #1d4ed8; /* manual darker shade */
}

@media (max-width: 768px) {
  .hero {
    padding: 60px 0;
  }

  .method,
  .course-details,
  .instructor,
  .cta-section {
    padding: 40px 0;
  }
}