/* ==========================================================================
   Luca Baeyens - Rediseño Web
   Design System & Stylesheet
   Zero external dependencies. High contrast WCAG AA. Instant loading.
   ========================================================================== */

:root {
  /* Color Palette - Light Mode */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --bg-card: #FFFFFF;
  --bg-accent-soft: #EEF2F6;
  
  --border-light: #E2E8F0;
  --border-strong: #CBD5E1;
  --border-focus: #0F172A;

  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --text-on-accent: #FFFFFF;

  --accent-primary: #0F172A;
  --accent-primary-hover: #1E293B;
  --accent-blue: #1E40AF;
  --accent-green-bg: #ECFDF5;
  --accent-green-text: #065F46;
  --accent-green-border: #A7F3D0;
  --tag-bg: #F1F5F9;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 1.0625rem; /* 17px */
  --line-height-base: 1.65;
  --line-height-tight: 1.25;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5rem;

  /* Layout */
  --container-max-w: 780px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0B0F17;
    --bg-secondary: #111827;
    --bg-tertiary: #1F2937;
    --bg-card: #141B2D;
    --bg-accent-soft: #1E293B;

    --border-light: #283548;
    --border-strong: #374761;
    --border-focus: #93C5FD;

    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --text-on-accent: #0F172A;

    --accent-primary: #F8FAFC;
    --accent-primary-hover: #E2E8F0;
    --accent-blue: #60A5FA;
    --accent-green-bg: #064E3B;
    --accent-green-text: #A7F3D0;
    --accent-green-border: #047857;
    --tag-bg: #1F2937;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  }
}

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

html {
  font-family: var(--font-family);
  font-size: 100%;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

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

:focus-visible {
  outline: 2.5px solid var(--border-focus);
  outline-offset: 3px;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  border-bottom: 1px solid var(--border-light);
  background-color: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.site-header .header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.site-brand {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.site-brand-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  border-radius: var(--radius-full);
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.nav-cta {
  background-color: var(--accent-primary);
  color: var(--text-on-accent) !important;
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.95rem;
}

.nav-cta:hover {
  background-color: var(--accent-primary-hover);
}

/* ==========================================================================
   Typography & Sections
   ========================================================================== */
main {
  flex: 1;
}

section {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

section + section {
  border-top: 1px solid var(--border-light);
}

h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  margin-bottom: var(--space-md);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 1.875rem);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

p {
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-lg);
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

/* ==========================================================================
   Buttons & CTAs
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--text-on-accent) !important;
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-primary) !important;
  border-color: var(--border-strong);
}

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

.btn-lg {
  min-height: 52px;
  padding: 0.875rem 1.75rem;
  font-size: 1.0625rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.hero-pill-dot {
  width: 8px;
  height: 8px;
  background-color: #10B981;
  border-radius: 50%;
}

.price-callout {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.price-number {
  font-size: 1.15em;
  color: var(--text-primary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
}

.hero-actions-center {
  justify-content: center;
}

.baja-cta {
  margin: 1.5rem 0;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ==========================================================================
   How It Works (Steps)
   ========================================================================== */
.steps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: var(--space-lg);
}

.step-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1.25rem;
  padding: 1.25rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--text-primary);
}

.step-content h3 {
  margin-bottom: 0.35rem;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==========================================================================
   What's Included / Not Included
   ========================================================================== */
.scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: var(--space-lg);
}

@media (min-width: 640px) {
  .scope-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.scope-card {
  padding: 1.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.scope-card-included {
  border-color: var(--border-strong);
}

.scope-card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.check-list, .cross-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.check-list li, .cross-list li {
  position: relative;
  padding-left: 1.75rem;
  font-size: 0.95rem;
  line-height: 1.45;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: #10B981;
  font-weight: 800;
  font-size: 1rem;
}

.cross-list li::before {
  content: "✕";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.9rem;
}

/* Add-ons banner */
.addons-card {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}

.addons-card h4 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.addons-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.addons-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.addon-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.85rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.addon-badge img {
  height: 20px;
  width: auto;
}

/* ==========================================================================
   Before / After Examples
   ========================================================================== */
.examples-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-top: var(--space-lg);
}

.example-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.example-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.example-badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  background-color: var(--accent-green-bg);
  color: var(--accent-green-text);
  border: 1px solid var(--accent-green-border);
  font-size: 0.8125rem;
  font-weight: 700;
  border-radius: var(--radius-full);
}

.comparison-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .comparison-container {
    grid-template-columns: 1fr 1fr;
  }
}

.comparison-pane {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.comparison-label {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.comparison-pane.after .comparison-label {
  color: var(--text-primary);
}

.comparison-image-wrapper {
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background-color: var(--bg-tertiary);
}

.comparison-image-wrapper img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.example-notes {
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   About Me (Quién soy)
   ========================================================================== */
.about-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 1.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  margin-top: var(--space-md);
}

@media (min-width: 600px) {
  .about-card {
    grid-template-columns: 96px 1fr;
    align-items: center;
  }
}

.about-avatar {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-full);
  background-color: var(--accent-primary);
  color: var(--text-on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.75rem;
  margin: 0 auto;
  border: 3px solid var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.about-text h3 {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.about-text p {
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

/* ==========================================================================
   FAQ Section (Native Accessible Accordions)
   ========================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: var(--space-lg);
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.15s ease;
}

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

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.15rem 1.25rem;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.faq-question::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1;
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  content: "−";
  transform: rotate(0deg);
}

.faq-answer {
  padding: 0 1.25rem 1.25rem 1.25rem;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  text-align: center;
  margin-top: var(--space-lg);
}

.contact-email-wrapper {
  margin: var(--space-lg) 0;
}

.email-display {
  display: inline-block;
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  background-color: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  word-break: break-all;
}

.email-display:hover {
  border-color: var(--border-focus);
}

.contact-note {
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-light);
  background-color: var(--bg-secondary);
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-legal-data {
  line-height: 1.6;
}

.footer-legal-data strong {
  color: var(--text-primary);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  list-style: none;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

.footer-optout {
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ==========================================================================
   Legal Pages (Aviso Legal, Privacidad, Baja)
   ========================================================================== */
.legal-page {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-2xl);
}

.legal-page h1 {
  margin-bottom: 0.5rem;
}

.legal-meta {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-light);
}

.legal-content h2 {
  font-size: 1.35rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal-content p, .legal-content ul {
  font-size: 0.98rem;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.legal-content ul {
  padding-left: 1.5rem;
}

.legal-content li {
  margin-bottom: 0.4rem;
}

.todo-badge {
  display: inline-block;
  background-color: #FEF3C7;
  color: #92400E;
  border: 1px solid #FCD34D;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  margin-right: 0.25rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.back-link:hover {
  color: var(--text-primary);
}