/* Reset y Variables */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colores principales */
  --color-primary: #2d3748;
  --color-secondary: #4a5568;
  --color-accent: #3182ce;
  --color-accent-hover: #2c5282;
  --color-background: #f7fafc;
  --color-surface: #ffffff;
  --color-text: #1a202c;
  --color-text-light: #718096;
  --color-border: #e2e8f0;
  --color-success: #48bb78;

  /* Tipografía */
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;

  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-background);
}

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

/* Header */
.header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo-icon {
  font-size: 1.5rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-menu a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

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

.btn-header {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s;
}

.btn-header:hover {
  background-color: var(--color-secondary);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-background) 0%, #edf2f7 90%);
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background-color: var(--color-surface);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 2rem;
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero-subtitle {
  display: block;
  font-size: 2rem;
  color: var(--color-secondary);
  margin-top: var(--spacing-sm);
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-primary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

.btn-full {
  width: 100%;
}

/* Differentiator Section */
.differentiator {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-surface);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.section-description {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

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

.feature-card {
  background-color: var(--color-background);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

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

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-text-light);
}

/* Benefits Section */
.benefits {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-background);
}

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

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.benefit-card {
  background-color: var(--color-surface);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: var(--spacing-md);
  transition: transform 0.3s, box-shadow 0.3s;
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.benefit-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 50px;
}

.benefit-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.benefit-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.benefit-content p {
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Pricing Section */
.pricing {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-surface);
}

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

.pricing-card {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  text-align: center;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-featured {
  border-color: var(--color-accent);
  background-color: var(--color-surface);
  transform: scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-accent);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
}

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

.pricing-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.pricing-description {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  min-height: 50px;
}

.pricing-price {
  margin-bottom: var(--spacing-sm);
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.price-period {
  font-size: 1rem;
  color: var(--color-text-light);
}

.pricing-price-alt {
  color: var(--color-text-light);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

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

.pricing-features li {
  padding: var(--spacing-sm) 0;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.pricing-features li:last-child {
  border-bottom: none;
}

/* Registration Section */
.registration {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
}

.registration-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.registration-info h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.registration-info p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.registration-benefits {
  list-style: none;
}

.registration-benefits li {
  padding: var(--spacing-sm) 0;
  font-size: 1.125rem;
}

.registration-form-container {
  background-color: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.registration-form h3 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
}

.checkbox-group label {
  margin-bottom: 0;
  font-weight: 400;
  font-size: 0.875rem;
}

.form-note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-top: var(--spacing-md);
}

/* Trust Section */
.trust {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-background);
}

.trust-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.trust-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.trust-description {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.trust-stat {
  background-color: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 1rem;
  color: var(--color-text-light);
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.footer-description {
  opacity: 0.8;
  line-height: 1.6;
}

.footer-section h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: white;
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.footer-section a:hover {
  opacity: 1;
}

.footer-section p {
  opacity: 0.8;
  margin-bottom: var(--spacing-xs);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

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

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .section-header h2,
  .section-title {
    font-size: 1.75rem;
  }

  .registration-content {
    grid-template-columns: 1fr;
  }

  .pricing-featured {
    transform: scale(1);
  }

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