/* ============================================================================
   Global Styles & Reset
   ============================================================================ */

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

:root {
  /* Colors matching extension theme */
  --color-primary: #00d4ff;
  --color-accent: #ff6b35;
  --color-dark: #0a0e17;
  --color-dark-alt: #151b2b;
  --color-dark-border: #1e2939;
  --color-text: #e8eaed;
  --color-text-muted: #9aa0a6;
  --color-success: #10b981;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
}

body {
  font-family: var(--font-family);
  background: var(--color-dark);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ============================================================================
   Hero Section
   ============================================================================ */

.hero {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-alt) 100%);
  padding: var(--spacing-xl) 0;
  text-align: center;
  border-bottom: 1px solid var(--color-dark-border);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  line-height: 1.4;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-dark);
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary);
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.1);
  opacity: 1;
}

.btn-large {
  padding: 1.25rem 3rem;
  font-size: 1.125rem;
}

.btn-disabled {
  opacity: 0.6;
  cursor: not-allowed !important;
}

.btn-disabled:hover {
  transform: none;
  opacity: 0.6;
}

/* ============================================================================
   Section Styles
   ============================================================================ */

section {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--color-dark-border);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

/* ============================================================================
   Features Section
   ============================================================================ */

.features {
  background: var(--color-dark-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.feature-card {
  background: var(--color-dark);
  padding: var(--spacing-md);
  border-radius: 12px;
  border: 1px solid var(--color-dark-border);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.15);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

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

/* ============================================================================
   How It Works Section
   ============================================================================ */

.how-it-works {
  background: var(--color-dark);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

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

.step-number {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin: 0 auto var(--spacing-md);
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
}

.step h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.step p {
  color: var(--color-text-muted);
  max-width: 300px;
  margin: 0 auto;
}

/* ============================================================================
   Pricing Section
   ============================================================================ */

.pricing {
  background: var(--color-dark-alt);
}

.pricing-card {
  max-width: 500px;
  margin: var(--spacing-lg) auto 0;
  background: var(--color-dark);
  border: 2px solid var(--color-primary);
  border-radius: 16px;
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
}

.pricing-header {
  margin-bottom: var(--spacing-md);
}

.pricing-header h3 {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.price {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  margin: var(--spacing-md) 0;
}

.currency {
  font-size: 2rem;
  color: var(--color-text-muted);
  align-self: flex-start;
  margin-top: 0.5rem;
}

.amount {
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.period {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  align-self: flex-end;
  margin-bottom: 1rem;
}

.pricing-features {
  list-style: none;
  margin: var(--spacing-md) 0;
  text-align: left;
}

.pricing-features li {
  padding: var(--spacing-xs) 0;
  color: var(--color-text);
  font-size: 1.125rem;
}

.pricing-note {
  margin-top: var(--spacing-md);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ============================================================================
   FAQ Section
   ============================================================================ */

.faq {
  background: var(--color-dark);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.faq-item {
  background: var(--color-dark-alt);
  padding: var(--spacing-md);
  border-radius: 12px;
  border: 1px solid var(--color-dark-border);
}

.faq-item h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.faq-item p {
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================================
   Footer
   ============================================================================ */

.footer {
  background: var(--color-dark-alt);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid var(--color-dark-border);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-section h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.125rem;
}

.footer-section p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.footer-section a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-dark-border);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .features-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .amount {
    font-size: 4rem;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-xl: 3rem;
    --spacing-lg: 2rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }
}