* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, #3d3bb5 0%, #2e2a8f 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
}

.main-title {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 10px;
  color: #fff;
}

.subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
}

.section-title {
  font-size: 2.2rem;
  color: #3d3bb5;
  font-weight: bold;
  margin-bottom: 30px;
  text-align: center;
}

/* Class Selection */
.class-selection {
  margin-top: 50px;
}

.class-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  margin-top: 30px;
}

.class-btn {
  background: #3d3bb5;
  color: white;
  padding: 18px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  display: block;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.class-btn:hover {
  background: #2e2a8f;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

/* Reviews Section */
.reviews-section {
  background: white;
  padding: 60px 20px;
}

.reviews-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin-top: 40px;
}

.review-card {
  background: #f9f9f9;
  padding: 25px;
  border-radius: 8px;
  border-left: 4px solid #3d3bb5;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.review-text {
  font-size: 0.95rem;
  color: #555;
  margin-bottom: 15px;
  line-height: 1.6;
}

.review-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #999;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
  margin-bottom: 10px;
}

.review-time {
  color: #bbb;
}

.review-reactions {
  font-weight: bold;
}

/* Features Section */
.features-section {
  background: linear-gradient(135deg, #f5f7ff 0%, #fff 100%);
  padding: 60px 20px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.feature-box {
  background: white;
  padding: 30px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.feature-box:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 15px;
}

.feature-box h3 {
  color: #3d3bb5;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.feature-box p {
  color: #666;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Trust Section */
.trust-section {
  background: white;
  padding: 60px 20px;
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 30px;
  margin-top: 40px;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  color: #3d3bb5;
}

.stat-label {
  color: #666;
  font-size: 0.95rem;
  margin-top: 10px;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, #3d3bb5 0%, #2e2a8f 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
}

.cta-section h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.cta-section p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.cta-button {
  background: white;
  color: #3d3bb5;
  padding: 14px 40px;
  border: none;
  border-radius: 25px;
  font-size: 1.05rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  text-decoration: none;
  display: inline-block;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Footer */
.footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 40px 20px;
}

.footer p {
  margin: 8px 0;
  font-size: 0.95rem;
}

.footer-links {
  margin-top: 15px;
}

.footer-links a {
  color: #bbb;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .main-title {
    font-size: 2rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .class-buttons {
    grid-template-columns: 1fr;
  }
  
  .cta-section h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .main-title {
    font-size: 1.5rem;
  }
  
  .class-btn {
    padding: 15px 20px;
    font-size: 1rem;
  }
}

/* PDF Generation Section */
.pdf-generation-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 80px 20px;
  text-align: center;
}

.pdf-content {
  max-width: 600px;
  margin: 0 auto;
}

.pdf-title {
  font-size: 2.5rem;
  font-weight: bold;
  color: #fff;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.pdf-subtitle {
  font-size: 1.2rem;
  color: #e0e0e0;
  margin-bottom: 30px;
  font-style: italic;
}

.pdf-generate-btn {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
  border: none;
  padding: 15px 50px;
  font-size: 1.1rem;
  font-weight: bold;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
}

.pdf-generate-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(245, 87, 108, 0.6);
}

/* Footer Contact Section */
.footer-contact {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid #ddd;
  text-align: center;
}

.footer-contact p {
  margin: 10px 0;
  font-size: 0.95rem;
  color: #666;
}

.footer-contact a {
  color: #667eea;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-contact a:hover {
  color: #764ba2;
  text-decoration: underline;
}