/* CSS Variables */
:root {
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --primary: #f97316;
  --primary-dark: #ea580c;
  --accent: #2563eb;
  --surface: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --radius: 14px;
  --spacing: 8px;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 calc(var(--spacing) * 3);
}

/* Urgency Bar */
.urgency-bar {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: calc(var(--spacing) * 1.5) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.urgency-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--spacing) * 3);
  flex-wrap: wrap;
}

.urgency-text {
  font-weight: 600;
  font-size: 0.95rem;
}

.countdown {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) / 2);
  font-weight: 700;
  font-size: 1.1rem;
}

.countdown-digit {
  background: rgba(255, 255, 255, 0.2);
  padding: calc(var(--spacing) / 2) calc(var(--spacing));
  border-radius: calc(var(--radius) / 2);
  min-width: 40px;
  text-align: center;
}

.urgency-cta {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  padding: calc(var(--spacing)) calc(var(--spacing) * 2);
  border-radius: calc(var(--radius) / 2);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.urgency-cta:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

/* Header */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: calc(var(--spacing) * 2) 0;
  position: sticky;
  top: 60px;
  z-index: 90;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.nav {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 4);
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--text);
}

.nav-cta {
  background: var(--primary) !important;
  color: white !important;
  padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 3);
  border-radius: calc(var(--radius) / 2);
  font-weight: 600;
  transition: all 0.2s ease;
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

/* Hero Section */
.hero {
  padding: calc(var(--spacing) * 8) 0;
  background: var(--surface);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing) * 8);
  align-items: center;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: calc(var(--spacing) * 3);
  color: var(--text);
}

.hero-subheadline {
  font-size: 1.25rem;
  color: var(--muted);
  margin-bottom: calc(var(--spacing) * 4);
  line-height: 1.5;
}

.price-section {
  margin-bottom: calc(var(--spacing) * 4);
}

.price-container {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing) * 2);
  margin-bottom: calc(var(--spacing));
}

.current-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
}

.original-price {
  font-size: 1.5rem;
  color: var(--muted);
  text-decoration: line-through;
}

.save-badge {
  background: var(--accent);
  color: white;
  padding: calc(var(--spacing) / 2) calc(var(--spacing) * 1.5);
  border-radius: calc(var(--radius) / 2);
  font-size: 0.875rem;
  font-weight: 600;
}

.price-note {
  font-size: 0.875rem;
  color: var(--muted);
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

/* CTA Buttons */
.cta-button {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: calc(var(--spacing) * 2) calc(var(--spacing) * 4);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}

.cta-button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(249, 115, 22, 0.3);
}

.cta-button:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.cta-button.large {
  padding: calc(var(--spacing) * 2.5) calc(var(--spacing) * 5);
  font-size: 1.2rem;
}

.cta-button.loading {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Highlights */
.highlights {
  padding: calc(var(--spacing) * 6) 0;
  background: var(--bg);
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--spacing) * 4);
  max-width: 600px;
  margin: 0 auto;
}

.highlight-badge {
  background: var(--surface);
  padding: calc(var(--spacing) * 3);
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.badge-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: calc(var(--spacing) / 2);
}

.badge-text {
  font-size: 0.875rem;
  color: var(--muted);
  font-weight: 500;
}

/* What's Inside */
.whats-inside {
  padding: calc(var(--spacing) * 8) 0;
  background: var(--surface);
}

.whats-inside h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacing) * 6);
  color: var(--text);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--spacing) * 4);
}

.feature-card {
  background: var(--bg);
  padding: calc(var(--spacing) * 4);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: calc(var(--spacing) * 2);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: calc(var(--spacing) * 1.5);
  color: var(--text);
}

.feature-card p {
  color: var(--muted);
  line-height: 1.6;
}

/* What You'll Learn */
.what-youll-learn {
  padding: calc(var(--spacing) * 8) 0;
  background: var(--bg);
}

.what-youll-learn h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacing) * 6);
  color: var(--text);
}

.learn-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 3);
}

.learn-item {
  display: flex;
  align-items: flex-start;
  gap: calc(var(--spacing) * 2);
  background: var(--surface);
  padding: calc(var(--spacing) * 3);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.check-icon {
  background: var(--accent);
  color: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.learn-item p {
  font-size: 1.1rem;
  color: var(--text);
  line-height: 1.6;
}

/* Preview Section */
.preview-section {
  padding: calc(var(--spacing) * 8) 0;
  background: var(--surface);
}

.preview-section h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacing) * 6);
  color: var(--text);
}

.preview-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing) * 6);
  align-items: center;
}

.preview-content img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.preview-text p {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: calc(var(--spacing) * 4);
  line-height: 1.6;
}

/* Testimonials */
.testimonials {
  padding: calc(var(--spacing) * 8) 0;
  background: var(--bg);
}

.testimonials h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacing) * 6);
  color: var(--text);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: calc(var(--spacing) * 4);
}

.testimonial-card {
  background: var(--surface);
  padding: calc(var(--spacing) * 4);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stars {
  color: #fbbf24;
  font-size: 1.2rem;
  margin-bottom: calc(var(--spacing) * 2);
}

.testimonial-card p {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: calc(var(--spacing) * 3);
  line-height: 1.6;
  font-style: italic;
}

.testimonial-author strong {
  display: block;
  color: var(--text);
  font-weight: 600;
  margin-bottom: calc(var(--spacing) / 2);
}

.testimonial-author span {
  color: var(--muted);
  font-size: 0.875rem;
}

/* FAQ */
.faq {
  padding: calc(var(--spacing) * 8) 0;
  background: var(--surface);
}

.faq h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacing) * 6);
  color: var(--text);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  padding: calc(var(--spacing) * 3) 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.faq-icon {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--muted);
  transition: transform 0.2s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer.open {
  max-height: 200px;
}

.faq-answer p {
  padding: 0 0 calc(var(--spacing) * 3) 0;
  color: var(--muted);
  line-height: 1.6;
}

/* Final CTA */
.final-cta {
  padding: calc(var(--spacing) * 8) 0;
  background: var(--bg);
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacing) * 2);
  color: var(--text);
}

.cta-content p {
  font-size: 1.2rem;
  color: var(--muted);
  margin-bottom: calc(var(--spacing) * 4);
}

.cta-content .price-container {
  justify-content: center;
  margin-bottom: calc(var(--spacing) * 4);
}

/* Footer */
.footer {
  background: var(--text);
  color: white;
  padding: calc(var(--spacing) * 6) 0;
}

.footer-content {
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: calc(var(--spacing) * 4);
  margin-bottom: calc(var(--spacing) * 3);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.copyright {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

/* Mobile Sticky CTA */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: calc(var(--spacing) * 2);
  box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding-bottom: calc(var(--spacing) * 2 + env(safe-area-inset-bottom));
}

.mobile-cta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--spacing) * 2);
}

.mobile-price {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing));
}

.mobile-current-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.mobile-original-price {
  font-size: 1rem;
  color: var(--muted);
  text-decoration: line-through;
}

.mobile-cta-button {
  background: var(--primary);
  color: white;
  padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 3);
  border-radius: calc(var(--radius) / 2);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.mobile-cta-button:hover {
  background: var(--primary-dark);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 calc(var(--spacing) * 2);
  }
  
  .hero-text h1 {
    font-size: 3rem;
  }
  
  .cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .urgency-content {
    gap: calc(var(--spacing) * 2);
  }
  
  .urgency-text {
    font-size: 0.875rem;
  }
  
  .countdown {
    font-size: 1rem;
  }
  
  .urgency-cta {
    font-size: 0.8rem;
    padding: calc(var(--spacing) * 0.75) calc(var(--spacing) * 1.5);
  }
  
  .header-content {
    flex-direction: column;
    gap: calc(var(--spacing) * 2);
  }
  
  .nav {
    gap: calc(var(--spacing) * 2);
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero {
    padding: calc(var(--spacing) * 4) 0;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing) * 4);
    text-align: center;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-subheadline {
    font-size: 1.1rem;
  }
  
  .highlights-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing) * 2);
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .preview-content {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing) * 4);
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-nav {
    flex-wrap: wrap;
    gap: calc(var(--spacing) * 2);
  }
  
  .mobile-cta-bar {
    display: flex;
  }
  
  body {
    padding-bottom: 80px;
  }
  
  .whats-inside h2,
  .what-youll-learn h2,
  .preview-section h2,
  .testimonials h2,
  .faq h2,
  .final-cta h2 {
    font-size: 2rem;
  }
  
  .final-cta {
    padding: calc(var(--spacing) * 6) 0;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .current-price {
    font-size: 2.5rem;
  }
  
  .original-price {
    font-size: 1.25rem;
  }
  
  .cta-button {
    width: 100%;
    padding: calc(var(--spacing) * 2.5) calc(var(--spacing) * 2);
  }
}