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

body {
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e5e7eb;
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-brand h2 {
  color: #6366f1;
  font-weight: 700;
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: #374151;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #6366f1;
}

.btn-cta {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white !important;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: #374151;
  margin: 3px 0;
  transition: 0.3s;
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
  overflow: hidden;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: #1f2937;
}

.highlight {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.25rem;
  color: #6b7280;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: #6366f1;
}

.stat-label {
  font-size: 0.875rem;
  color: #6b7280;
  font-weight: 500;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: white;
  color: #6366f1;
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  border: 2px solid #6366f1;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-secondary:hover {
  background: #6366f1;
  color: white;
  transform: translateY(-3px);
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease;
}

.hero-image:hover img {
  transform: scale(1.05);
}

/* Courses Section */
.courses {
  padding: 100px 0;
  background: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.2rem;
  color: #6b7280;
  max-width: 600px;
  margin: 0 auto;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.course-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
}

.course-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.course-card.featured {
  border: 3px solid #6366f1;
  transform: scale(1.05);
}

.course-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 10;
}

.course-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.course-content {
  padding: 1.5rem;
}

.course-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

.course-content p {
  color: #6b7280;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.course-details {
  margin-bottom: 1.5rem;
}

.course-details h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.75rem;
}

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

.course-details li {
  color: #6b7280;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  position: relative;
}

.course-details li:before {
  content: "✓";
  color: #059669;
  font-weight: bold;
  position: absolute;
  left: 0;
}

.course-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.course-features span {
  background: #f3f4f6;
  color: #374151;
  padding: 0.5rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

.course-price {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.price-old {
  color: #9ca3af;
  text-decoration: line-through;
  font-size: 1rem;
}

.price-current {
  color: #059669;
  font-size: 1.5rem;
  font-weight: 700;
}

.btn-course {
  width: 100%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  padding: 0.875rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-course:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

/* Benefits Section */
.benefits {
  padding: 100px 0;
  background: #f8fafc;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.benefit-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.benefit-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.benefit-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 1rem;
}

.benefit-card p {
  color: #6b7280;
  line-height: 1.6;
}

/* Testimonials Section */
.testimonials {
  padding: 100px 0;
  background: white;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: #f8fafc;
  padding: 2rem;
  border-radius: 16px;
  border-left: 4px solid #6366f1;
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.testimonial-content p {
  font-size: 1.1rem;
  color: #374151;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-author img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-author h4 {
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 0.25rem;
}

.testimonial-author span {
  color: #6b7280;
  font-size: 0.875rem;
}

/* CTA Section */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.cta-offer {
  background: rgba(255, 255, 255, 0.1);
  padding: 1rem 2rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  display: inline-block;
}

.offer-text {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.offer-time {
  font-size: 0.875rem;
  opacity: 0.8;
}

.btn-cta-large {
  background: white;
  color: #6366f1;
  padding: 1.25rem 3rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  transition: all 0.3s ease;
  display: inline-block;
  margin-bottom: 1.5rem;
}

.btn-cta-large:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(255, 255, 255, 0.3);
}

.guarantee {
  font-size: 0.875rem;
  opacity: 0.9;
}

/* Contact Section */
.contact {
  padding: 100px 0;
  background: #f8fafc;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.contact-item p {
  color: #6b7280;
  font-size: 1.1rem;
}

.contact-form {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  margin-bottom: 1rem;
  transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #6366f1;
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  background: #1f2937;
  color: white;
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-brand h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #6366f1;
}

.footer-brand p {
  color: #9ca3af;
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-column h4 {
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
}

.footer-column a {
  display: block;
  color: #9ca3af;
  text-decoration: none;
  margin-bottom: 0.5rem;
  transition: color 0.3s ease;
}

.footer-column a:hover {
  color: #6366f1;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 2rem;
  text-align: center;
}

.footer-bottom p {
  color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .courses-grid {
    grid-template-columns: 1fr;
  }
  
  .course-card.featured {
    transform: none;
  }
  
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .cta-content h2 {
    font-size: 2rem;
  }
  
  .btn-cta-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
  }
}