/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .nav-container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .nav-container {
    padding: 0 var(--space-8);
  }
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-icon {
  width: 2rem;
  height: 2rem;
  color: var(--primary-600);
}

.brand-text {
  font-size: var(--text-2xl);
  font-weight: 700;
  background: linear-gradient(to right, var(--primary-600), var(--purple-600));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  color: var(--gray-600);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary-600);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Buttons */
.btn-ghost {
  background: transparent;
  border: none;
  color: var(--gray-600);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.btn-ghost:hover {
  color: var(--primary-600);
}

.btn-primary {
  background: var(--primary-600);
  color: white;
  border: none;
  font-weight: 500;
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-primary:hover {
  background: var(--primary-700);
  box-shadow: var(--shadow-lg);
  transform: scale(1.05);
}

.btn-secondary {
  background: white;
  color: var(--gray-900);
  border: 2px solid var(--gray-200);
  font-weight: 500;
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--primary-300);
  box-shadow: var(--shadow-lg);
}

.btn-large {
  padding: var(--space-4) 2.5rem;
  font-size: var(--text-lg);
  font-weight: 700;
}

.btn-dark {
  background: var(--gray-900);
  color: white;
  border: none;
  font-weight: 700;
  padding: var(--space-4) 2.5rem;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-dark:hover {
  background: var(--gray-800);
  box-shadow: var(--shadow-xl);
  transform: scale(1.05);
}

.btn-yellow {
  background: var(--yellow-400);
  color: var(--gray-900);
  border: none;
  font-weight: 700;
  padding: var(--space-4) 2.5rem;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn-yellow:hover {
  background: #eab308;
  box-shadow: var(--shadow-xl);
  transform: scale(1.05);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-weight: 700;
  padding: var(--space-4) 2.5rem;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-xl);
}

.btn-course {
  background: var(--primary-600);
  color: white;
  border: none;
  font-weight: 500;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn-course:hover {
  background: var(--primary-700);
  box-shadow: var(--shadow-lg);
  transform: scale(1.05);
}

/* Hero Section */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-50), white, #faf5ff);
  padding: var(--space-24) 0 var(--space-32);
}

@media (min-width: 1024px) {
  .hero {
    padding: var(--space-32) 0;
  }
}

.hero-background {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234F46E5' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
}

.hero-container {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  text-align: center;
}

@media (min-width: 640px) {
  .hero-container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .hero-container {
    padding: 0 var(--space-8);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: var(--primary-100);
  border-radius: var(--radius-full);
  color: var(--primary-700);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-8);
  gap: var(--space-2);
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-8);
  line-height: 1.1;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--text-7xl);
  }
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--gray-600);
  margin-bottom: var(--space-12);
  max-width: 64rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.75;
}

@media (min-width: 768px) {
  .hero-description {
    font-size: var(--text-2xl);
  }
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  justify-content: center;
  margin-bottom: var(--space-16);
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
  }
}

.hero-trust {
  text-align: center;
}

.trust-text {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-bottom: var(--space-6);
}

.rating {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
}

.stars {
  display: flex;
  gap: var(--space-1);
  color: var(--yellow-400);
}

.stars i {
  width: 1.25rem;
  height: 1.25rem;
}

.rating-text {
  color: var(--gray-600);
  font-weight: 500;
}

/* Features Section */
.features {
  padding: var(--space-24) 0;
  background: white;
}

.features-grid {
  display: grid;
  gap: var(--space-12);
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  text-align: center;
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-0.5rem);
}

.feature-icon {
  width: 5rem;
  height: 5rem;
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-icon i {
  font-size: 2.5rem;
  color: white;
}

.icon-gradient-1 {
  background: linear-gradient(135deg, var(--primary-500), var(--purple-600));
}

.icon-gradient-2 {
  background: linear-gradient(135deg, var(--emerald-500), #0d9488);
}

.icon-gradient-3 {
  background: linear-gradient(135deg, var(--amber-500), var(--amber-600));
}

.feature-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.feature-description {
  color: var(--gray-600);
  line-height: 1.75;
}

/* Courses Section */
.courses {
  padding: var(--space-24) 0;
  background: linear-gradient(135deg, var(--gray-50), var(--primary-50));
}

.courses-grid {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .courses-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.course-card {
  background: white;
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
}

.course-card:hover {
  box-shadow: var(--shadow-2xl);
  transform: translateY(-0.5rem);
}

.course-image {
  height: 16rem;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-laravel {
  background: linear-gradient(135deg, #ef4444, #ec4899);
}

.course-react {
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
}

.course-python {
  background: linear-gradient(135deg, #eab308, #f97316);
}

.course-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.1);
}

.course-logo {
  text-align: center;
  color: white;
  z-index: 10;
  position: relative;
}

.logo-letter {
  font-size: 3.75rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.logo-text {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
}

.course-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  color: white;
  font-size: var(--text-sm);
  font-weight: 500;
}

.course-content {
  padding: var(--space-8);
}

.course-rating {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-3);
  gap: var(--space-2);
}

.course-rating .stars {
  color: var(--yellow-400);
}

.rating-count {
  color: var(--gray-600);
  font-size: var(--text-sm);
}

.course-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}

.course-description {
  color: var(--gray-600);
  margin-bottom: var(--space-6);
  line-height: 1.75;
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.course-price {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.current-price {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--primary-600);
}

.old-price {
  color: var(--gray-400);
  text-decoration: line-through;
}

.courses-cta {
  text-align: center;
}

/* Stats Section */
.stats {
  padding: var(--space-24) 0;
  background: linear-gradient(to right, var(--primary-600), var(--purple-600), var(--primary-600));
  position: relative;
  overflow: hidden;
}

.stats-background {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M20 20c0-5.5-4.5-10-10-10s-10 4.5-10 10 4.5 10 10 10 10-4.5 10-10zm10 0c0-5.5-4.5-10-10-10s-10 4.5-10 10 4.5 10 10 10 10-4.5 10-10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.3;
}

.stats-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
  transition: transform var(--transition-normal);
}

.stat-item:hover {
  transform: scale(1.1);
}

.stat-number {
  font-size: var(--text-5xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-3);
}

@media (min-width: 768px) {
  .stat-number {
    font-size: var(--text-6xl);
  }
}

.stat-plus {
  color: var(--yellow-300);
}

.stat-label {
  font-size: var(--text-xl);
  color: #c7d2fe;
  font-weight: 500;
}

/* Learning Path Section */
.learning-path {
  padding: var(--space-24) 0;
  background: white;
}

.path-grid {
  display: grid;
  gap: var(--space-8);
  position: relative;
}

@media (min-width: 768px) {
  .path-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.path-step {
  text-align: center;
  position: relative;
}

.step-number {
  background: linear-gradient(135deg, var(--primary-500), var(--purple-600));
  width: 4rem;
  height: 4rem;
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  color: white;
  font-weight: 700;
  font-size: var(--text-xl);
  transition: transform var(--transition-normal);
}

.path-step:hover .step-number {
  transform: scale(1.1);
}

.step-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.step-description {
  color: var(--gray-600);
}

/* CTA Section */
.cta {
  padding: var(--space-24) 0;
  background: linear-gradient(135deg, var(--gray-900), #312e81);
  position: relative;
  overflow: hidden;
}

.cta-background {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.2;
}

.cta-container {
  position: relative;
  max-width: 80rem;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .cta-container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .cta-container {
    padding: 0 var(--space-8);
  }
}

.cta-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-8);
  line-height: 1.1;
}

@media (min-width: 768px) {
  .cta-title {
    font-size: var(--text-6xl);
  }
}

.cta-highlight {
  color: var(--yellow-300);
}

.cta-description {
  font-size: var(--text-xl);
  color: var(--gray-300);
  margin-bottom: var(--space-12);
  line-height: 1.75;
}

@media (min-width: 768px) {
  .cta-description {
    font-size: var(--text-2xl);
  }
}

.cta-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  justify-content: center;
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .cta-actions {
    flex-direction: row;
  }
}

.cta-features {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  color: rgba(255, 255, 255, 0.8);
  flex-wrap: wrap;
}

.cta-feature {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.cta-feature i {
  color: #10b981;
}

/* FAQ Section */
.faq {
  padding: var(--space-24) 0;
  background: var(--gray-50);
}

.faq .container {
  max-width: 64rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.faq-item {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.faq-item:hover {
  box-shadow: var(--shadow-lg);
}

.faq-question {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.faq-answer {
  color: var(--gray-600);
  line-height: 1.75;
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: white;
  padding: var(--space-16) 0;
}

.footer-content {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand {
  grid-column: span 2;
}

@media (min-width: 768px) {
  .footer-brand {
    grid-column: span 1;
  }
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.footer-logo i {
  font-size: 2rem;
  color: #a5b4fc;
}

.footer-logo span {
  font-size: var(--text-2xl);
  font-weight: 700;
}

.footer-description {
  color: var(--gray-400);
  line-height: 1.75;
  margin-bottom: var(--space-6);
  max-width: 24rem;
}

.social-links {
  display: flex;
  gap: var(--space-4);
}

.social-link {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--primary-600);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.social-link:hover {
  background: var(--primary-700);
}

.footer-links h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-6);
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: var(--gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.copyright {
  color: var(--gray-400);
  font-size: var(--text-sm);
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
}

.footer-legal a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

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