/* CSS Variables & Design System */
:root {
  --color-navy: #1F2A3C;
  --color-teal: #0F6E56;
  --color-teal-hover: #0B5442;
  --color-teal-light: #EBF5F3;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-border: #E2E8F0;
  --color-text-main: #1F2A3C;
  --color-text-muted: #475569;
  
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  
  --container-width: 1120px;
  --container-narrow: 768px;
  --transition-fast: 0.2s ease;
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn-accent {
  background-color: var(--color-teal);
  color: #FFFFFF;
  border-color: var(--color-teal);
}

.btn-accent:hover,
.btn-accent:focus-visible {
  background-color: var(--color-teal-hover);
  border-color: var(--color-teal-hover);
}

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

.btn-outline:hover,
.btn-outline:focus-visible {
  background-color: var(--color-navy);
  color: #FFFFFF;
}

.btn-lg {
  padding: 0.9rem 2rem;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.btn:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-teal);
  outline-offset: 2px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-navy);
  letter-spacing: -0.02em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.15rem 0.25rem;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 4px;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.lang-btn:hover {
  color: var(--color-navy);
}

.lang-btn.active {
  color: var(--color-teal);
  background-color: var(--color-teal-light);
}

.lang-divider {
  color: var(--color-border);
  font-size: 0.75rem;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 2.5rem;
  height: 2.5rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  width: 1.5rem;
  height: 2px;
  background-color: var(--color-navy);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  display: block;
}

.hamburger {
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before {
  top: -6px;
}

.hamburger::after {
  bottom: -6px;
}

/* Mobile Nav Open State */
.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-menu {
  position: absolute;
  top: 4.5rem;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem;
  display: none;
  flex-direction: column;
  gap: 1.25rem;
}

.nav-menu.is-active {
  display: flex;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.nav-link {
  font-weight: 500;
  color: var(--color-navy);
  transition: color var(--transition-fast);
  font-size: 1rem;
}

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

/* Desktop Navigation (min-width: 768px) */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    padding: 0;
    border: none;
  }

  .nav-list {
    flex-direction: row;
    gap: 1.75rem;
  }
}

/* Sections General */
.section {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-navy);
  letter-spacing: -0.02em;
}

/* Hero Section */
.hero-section {
  padding-top: 5rem;
  padding-bottom: 6rem;
  text-align: center;
  background-color: var(--color-bg);
}

.hero-container {
  max-width: 860px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-navy);
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.5rem;
  }
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 720px;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: 1.25rem;
  }
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  max-width: 440px;
}

@media (min-width: 540px) {
  .hero-cta-group {
    flex-direction: row;
    max-width: none;
    justify-content: center;
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: 2rem;
}

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

/* Cómo funciona Cards */
.step-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.step-icon-wrapper {
  width: 3rem;
  height: 3rem;
  border-radius: 6px;
  background-color: var(--color-teal-light);
  color: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-icon {
  width: 1.5rem;
  height: 1.5rem;
}

.step-number {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-teal);
  opacity: 0.6;
}

.step-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
}

.step-text {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

/* Precios Section */
.pricing-grid {
  display: grid;
  gap: 2rem;
  max-width: 1020px;
  margin-left: auto;
  margin-right: auto;
}

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

.pricing-card {
  position: relative;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pricing-card-featured {
  border: 2px solid var(--color-teal);
}

.pricing-badge {
  position: absolute;
  top: -0.85rem;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-teal);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.85rem;
  border-radius: 20px;
}

.pricing-plan-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
}

.pricing-price {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.pricing-desc {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.pricing-note {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 2.5rem;
}

/* FAQ Accordion */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--color-teal);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-teal);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

/* CTA Final Section */
.cta-section {
  padding-top: 6rem;
  padding-bottom: 6rem;
  background-color: var(--color-navy);
  color: #FFFFFF;
  text-align: center;
}

.cta-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.cta-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .cta-title {
    font-size: 2.75rem;
  }
}

/* Footer */
.site-footer {
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 540px) {
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-email {
  color: var(--color-teal);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.footer-email:hover {
  color: var(--color-teal-hover);
  text-decoration: underline;
}