/* ============================================
   EL ACUERDO DE LEALTAD DIGITAL - Landing Page
   Mobile-First TSL Design
   ============================================ */

/* Google Fonts with font-display: swap for fast loading */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap');

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #4F46E5;
  --color-primary-dark: #4338CA;
  --color-primary-light: #6366F1;
  --color-accent: #D4AF37;
  --color-accent-light: #E5C76B;
  --color-success: #10B981;
  --color-danger: #EF4444;

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

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

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gray-900);
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.75rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

@media (min-width: 768px) {
  h1 {
    font-size: 2.75rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.75rem;
  }
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-sm);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.header__logo span {
  color: var(--color-accent);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
}

.btn--accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, #C19B2E 100%);
  color: var(--color-gray-900);
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.4);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

.btn--large {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

.btn--full {
  width: 100%;
}

.btn--sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

/* Pulse animation for CTA */
@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.02);
  }
}

.btn--pulse {
  animation: pulse 2s infinite;
}

.btn--pulse:hover {
  animation: none;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  padding: 6rem var(--spacing-sm) var(--spacing-2xl);
  background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
  text-align: center;
}

.hero__badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
  color: var(--color-gray-900);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.hero__title {
  margin-bottom: var(--spacing-md);
  font-size: 1.875rem;
  line-height: 1.15;
}

.hero__title span {
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__image {
  margin: var(--spacing-lg) auto;
  max-width: 280px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.hero__cta-wrapper {
  margin-top: var(--spacing-lg);
}

.hero__microcopy {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  font-size: 0.8rem;
  color: var(--color-gray-600);
}

.hero__microcopy span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.hero__microcopy svg {
  width: 16px;
  height: 16px;
  color: var(--color-success);
}

@media (min-width: 768px) {
  .hero {
    padding: 8rem var(--spacing-lg) var(--spacing-2xl);
  }

  .hero__title {
    font-size: 2.75rem;
  }

  .hero__image {
    max-width: 350px;
  }
}

/* ============================================
   EMPATHY / PROBLEM SECTION
   ============================================ */
.empathy {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: var(--color-gray-900);
  color: var(--color-white);
}

.empathy__title {
  text-align: center;
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
}

.empathy__title span {
  color: var(--color-accent);
}

.empathy__list {
  list-style: none;
  max-width: 600px;
  margin: 0 auto;
}

.empathy__item {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 1rem;
  line-height: 1.5;
}

.empathy__item:last-child {
  border-bottom: none;
}

.empathy__icon {
  flex-shrink: 0;
  font-size: 1.25rem;
}

.empathy__cta {
  text-align: center;
  margin-top: var(--spacing-xl);
}

.empathy__cta p {
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
  color: var(--color-gray-300);
}

.empathy__cta span {
  color: var(--color-accent);
  font-weight: 600;
}

@media (min-width: 768px) {
  .empathy {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .empathy__title {
    font-size: 2rem;
  }
}

/* ============================================
   SOLUTION / BENEFITS SECTION
   ============================================ */
.benefits {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: var(--color-white);
}

.benefits__title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.benefits__title span {
  color: var(--color-primary);
}

.benefits__grid {
  display: grid;
  gap: var(--spacing-md);
  max-width: 900px;
  margin: 0 auto;
}

.benefit-card {
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
  transition: all var(--transition-normal);
}

.benefit-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.benefit-card--emotional {
  border-left-color: var(--color-accent);
}

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

.benefit-card__title {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
}

.benefit-card__text {
  font-size: 0.95rem;
  color: var(--color-gray-600);
}

@media (min-width: 768px) {
  .benefits {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* ============================================
   OFFER STACK SECTION
   ============================================ */
.offer {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.offer__title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.offer__card {
  max-width: 500px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.offer__header {
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
}

.offer__header h3 {
  color: var(--color-white);
  font-size: 1.25rem;
}

.offer__items {
  padding: var(--spacing-md);
  list-style: none;
}

.offer__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-gray-100);
}

.offer__item:last-child {
  border-bottom: none;
}

.offer__item-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.offer__item-icon {
  color: var(--color-success);
  font-size: 1.25rem;
}

.offer__item-value {
  color: var(--color-gray-600);
  text-decoration: line-through;
  font-size: 0.9rem;
}

.offer__total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--color-gray-100);
  font-weight: 600;
}

.offer__total-value {
  text-decoration: line-through;
  color: var(--color-gray-600);
  font-size: 1.25rem;
}

.offer__price-box {
  padding: var(--spacing-lg);
  text-align: center;
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
}

.offer__price-label {
  font-size: 0.9rem;
  color: var(--color-gray-800);
  margin-bottom: var(--spacing-xs);
}

.offer__price {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-gray-900);
}

.offer__price sup {
  font-size: 1.5rem;
}

/* ============================================
   MODULES / CONTENT SECTION
   ============================================ */
.modules {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: var(--color-white);
}

.modules__title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.modules__list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.module-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.module-item:hover {
  background: var(--color-gray-100);
}

.module-item__number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  border-radius: var(--radius-full);
}

.module-item__content h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.module-item__content p {
  font-size: 0.9rem;
  color: var(--color-gray-600);
}

/* ============================================
   PRICE BOX SECTION
   ============================================ */
.price-section {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
}

.price-section__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.price-section__subtitle {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-lg);
}

.price-card {
  max-width: 400px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  color: var(--color-gray-900);
  box-shadow: var(--shadow-xl);
}

.price-card__old {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  text-decoration: line-through;
  margin-bottom: var(--spacing-xs);
}

.price-card__current {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-success);
  margin-bottom: var(--spacing-xs);
}

.price-card__current sup {
  font-size: 1.5rem;
}

.price-card__savings {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-success);
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.price-card__cta {
  margin-bottom: var(--spacing-md);
}

.price-card__guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-size: 0.85rem;
  color: var(--color-gray-600);
}

.price-card__guarantee svg {
  color: var(--color-success);
}

/* Order Bump */
.order-bump {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border: 2px dashed var(--color-accent);
  border-radius: var(--radius-md);
  text-align: left;
}

.order-bump__header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.order-bump__checkbox {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.order-bump__label {
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
}

.order-bump__description {
  font-size: 0.85rem;
  color: var(--color-gray-600);
  margin-left: 32px;
}

.order-bump__price {
  font-weight: 700;
  color: var(--color-primary);
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: var(--color-gray-50);
}

.testimonials__title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.testimonials__grid {
  display: grid;
  gap: var(--spacing-md);
  max-width: 900px;
  margin: 0 auto;
}

.testimonial-card {
  padding: var(--spacing-md);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.testimonial-card__stars {
  color: var(--color-accent);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.testimonial-card__text {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-sm);
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 600;
}

.testimonial-card__info h5 {
  font-size: 0.95rem;
  font-weight: 600;
}

.testimonial-card__info span {
  font-size: 0.8rem;
  color: var(--color-gray-600);
}

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

/* ============================================
   FAQ SECTION
   ============================================ */
.faq {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: var(--color-white);
}

.faq__title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.faq__list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-gray-200);
}

/* Summary is the native clickable element */
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  cursor: pointer;
  list-style: none;
  /* Remove default marker */
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-900);
  transition: color var(--transition-fast);
}

/* Remove default arrow in Safari/Chrome */
.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::marker {
  display: none;
}

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

.faq-item summary:focus {
  outline: none;
}

.faq-item summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.faq-item__icon {
  font-size: 1.5rem;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}

.faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  padding: 0 0 var(--spacing-md);
  font-size: 0.95rem;
  color: var(--color-gray-600);
  line-height: 1.7;
}

/* ============================================
   FINAL CTA SECTION
   ============================================ */
.final-cta {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: linear-gradient(180deg, var(--color-gray-900) 0%, #0F0F1A 100%);
  color: var(--color-white);
  text-align: center;
}

.final-cta__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.final-cta__title span {
  color: var(--color-accent);
}

.final-cta__subtitle {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.final-cta__price {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.final-cta__guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--spacing-lg) var(--spacing-sm);
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  text-align: center;
}

.footer__trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer__trust-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8rem;
}

.footer__trust-item svg {
  width: 20px;
  height: 20px;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--color-gray-500);
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center {
  text-align: center;
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

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

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

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus states */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Lazy loading placeholder */
img[loading="lazy"] {
  background: var(--color-gray-100);
}