/* ==========================================================================
   GUÍA PRÁCTICA MERA ICADE - SISTEMA DE DISEÑO INSTITUCIONAL V2
   Extraído de la versión oficial de la Guía Práctica MERA ICADE 2.2
   ========================================================================== */

:root {
  /* Paleta Oficial Extraída */
  --mera-title-deep: #281370;    /* Morado profundo de títulos H1 y H2 */
  --mera-purple: #48307C;        /* Morado institucional principal */
  --mera-purple-mid: #5C3A99;    /* Morado medio para H3, enlaces y botones */
  --mera-annex-deep: #1D1452;    /* Morado oscuro utilizado en anexos */
  --mera-ink: #2C2733;           /* Texto principal carbón */
  --mera-muted: #6F697A;         /* Texto secundario */
  --mera-white: #FFFFFF;         /* Blanco puro */
  
  /* Fondos y Acentos Extraídos */
  --mera-callout: #F7F4FB;       /* Fondo suave de callouts */
  --mera-lavender-1: #EEF0FA;    /* Lavanda nivel 1 */
  --mera-lavender-2: #D4D9F4;    /* Lavanda nivel 2 */
  --mera-lavender-3: #C0C6E6;    /* Lavanda nivel 3 */
  --mera-blue-soft: #BFE3F2;     /* Azul suave para categorías */
  --mera-rose-soft: #FCEDEA;     /* Rosa suave */
  --mera-rose: #F4C8C2;          /* Rosa medio para alertas/llamados */
  --mera-green-soft: #D9F2D0;    /* Verde claro de buenas prácticas */
  --mera-green: #389e54;         /* Verde acento */
  --mera-yellow-soft: #FFFFCC;   /* Amarillo suave */
  --mera-annex-soft: #F8F7FB;    /* Fondo suave de anexos */
  --line: #E8E2EE;               /* Líneas y bordes */

  /* Compatibilidad y Mapeos */
  --icade-purple: var(--mera-purple);
  --icade-purple-2: var(--mera-purple-mid);
  --icade-deep: var(--mera-title-deep);
  --icade-lavender: var(--mera-lavender-3);
  --icade-lilac: #A98DC2;
  --icade-rose: var(--mera-rose);
  --icade-green: var(--mera-green);
  --icade-blue: var(--mera-blue-soft);
  --ink: var(--mera-ink);
  --muted: var(--mera-muted);
  --paper: var(--mera-white);
  --paper-soft: var(--mera-callout);
  --paper-warm: #FBF8F7;

  /* Tipografía Oficial Extraída */
  --font-display: "Aptos Display", Aptos, "Segoe UI", Arial, sans-serif;
  --font-body: Aptos, "Segoe UI", Arial, sans-serif;
  --font-sans: var(--font-body);

  --shell: min(1240px, calc(100vw - 48px));
  --shell-narrow: min(880px, calc(100vw - 48px));
  --reading-width: 75ch;
  
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  
  --shadow-sm: 0 3px 10px rgba(40, 19, 112, 0.04);
  --shadow: 0 12px 32px rgba(40, 19, 112, 0.08);
  --shadow-hover: 0 20px 48px rgba(40, 19, 112, 0.14);
  --shadow-deep: 0 24px 60px rgba(29, 20, 82, 0.28);
  
  --transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--mera-purple-mid);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--mera-title-deep);
}

/* Tipografía y Jerarquía Editorial */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.chapter-title, h1 {
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 4.5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--mera-title-deep);
  margin-bottom: 1rem;
}

.chapter-body h2, .content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 700;
  line-height: 1.18;
  color: var(--mera-purple);
  margin-top: 4.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

.chapter-body h3, .content h3 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--mera-purple-mid);
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.chapter-body h4, .content h4 {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.3vw, 1.25rem);
  font-weight: 700;
  color: var(--mera-title-deep);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.chapter-body p, .content p {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.1vw, 1.125rem);
  line-height: 1.75;
  color: var(--ink);
  max-width: var(--reading-width);
  margin-bottom: 1.35rem;
}

.lead {
  font-size: clamp(1.15rem, 1.3vw, 1.3rem);
  line-height: 1.68;
  color: var(--muted);
  max-width: 820px;
  margin-bottom: 1.75rem;
}

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

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

/* Header & Navegación Global */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.brand-divider {
  width: 1px;
  height: 32px;
  background: var(--line);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--mera-title-deep);
  line-height: 1.1;
}

.brand-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--ink);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover {
  background: var(--mera-callout);
  color: var(--mera-purple);
}

.nav-link.active {
  background: rgba(72, 48, 124, 0.08);
  color: var(--mera-purple);
}

/* Dropdown Menú de Capítulos */
.nav-item-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 340px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-deep);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
  text-decoration: none;
}

.dropdown-item:hover {
  background: var(--mera-callout);
  color: var(--mera-purple);
}

.dropdown-item.active {
  background: rgba(72, 48, 124, 0.08);
  color: var(--mera-purple);
}

.dropdown-num {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--mera-purple-mid);
  background: rgba(92, 58, 153, 0.1);
  padding: 2px 7px;
  border-radius: 4px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.93rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--mera-purple);
  color: var(--paper);
  box-shadow: 0 4px 14px rgba(72, 48, 124, 0.25);
}

.btn-primary:hover {
  background: var(--mera-title-deep);
  color: var(--paper);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(40, 19, 112, 0.35);
}

.btn-secondary {
  background: var(--paper);
  color: var(--mera-purple);
  border-color: var(--line);
}

.btn-secondary:hover {
  background: var(--mera-callout);
  border-color: var(--mera-lavender-3);
  color: var(--mera-purple-mid);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.84rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--mera-purple);
}

/* Hero Principal */
.hero-portal {
  background: linear-gradient(135deg, var(--mera-title-deep) 0%, #3a2074 50%, var(--mera-purple) 100%);
  color: var(--paper);
  padding: 5.5rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero-portal::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("../images/patron_puntos.svg");
  background-size: 360px auto;
  opacity: 0.08;
  pointer-events: none;
}

.hero-portal::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -15%;
  width: 650px;
  height: 650px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 217, 244, 0.18) 0%, rgba(212, 217, 244, 0) 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(212, 217, 244, 0.25);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mera-lavender-2);
  margin-bottom: 1.5rem;
}

.hero-title {
  color: var(--paper);
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 2.25rem;
  max-width: 580px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--mera-lavender-2);
  margin-top: 2.25rem;
}

.hero-graphic-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(212, 217, 244, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  text-align: center;
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  transition: var(--transition);
}

.hero-graphic-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 217, 244, 0.45);
}

/* Tarjetas de Diagnóstico y Métricas */
.diagnostic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.metric-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.85rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.metric-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.metric-card.tone-purple { border-top: 4px solid var(--mera-purple); }
.metric-card.tone-lavender { border-top: 4px solid var(--mera-purple-mid); }
.metric-card.tone-rose { border-top: 4px solid #d1496a; }
.metric-card.tone-blue { border-top: 4px solid #204080; }

.metric-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 1.25rem;
  object-fit: contain;
}

.metric-card h4 {
  font-size: 1.2rem;
  color: var(--mera-title-deep);
  margin-bottom: 0.6rem;
  margin-top: 0;
}

.metric-card p {
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 0;
  line-height: 1.6;
}

/* Secciones Generales */
.section {
  padding: 5.5rem 0;
}

.section-soft {
  background: var(--mera-callout);
}

.section-warm {
  background: var(--paper-warm);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.5rem;
}

.section-kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mera-purple-mid);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: var(--mera-title-deep);
  margin-bottom: 1rem;
}

/* Grid de Componentes MERA */
.mera-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}

.mera-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.25rem 1.85rem;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.mera-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--mera-lavender-3);
}

.mera-card-m { border-top: 4px solid var(--mera-purple); }
.mera-card-e { border-top: 4px solid var(--mera-purple-mid); }
.mera-card-r { border-top: 4px solid #8e6ab8; }
.mera-card-a { border-top: 4px solid #b85d77; }

.mera-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
}

.mera-card-m .mera-badge { background: rgba(72, 48, 124, 0.1); color: var(--mera-purple); }
.mera-card-e .mera-badge { background: rgba(92, 58, 153, 0.1); color: var(--mera-purple-mid); }
.mera-card-r .mera-badge { background: rgba(192, 198, 230, 0.35); color: var(--mera-title-deep); }
.mera-card-a .mera-badge { background: rgba(244, 200, 194, 0.4); color: #8a3355; }

.mera-card h3 {
  font-size: 1.35rem;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.mera-question {
  background: var(--mera-callout);
  border-left: 3px solid var(--mera-purple-mid);
  padding: 0.85rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--mera-purple);
  margin-bottom: 1rem;
}

.mera-relation {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
}

/* ==========================================================================
   GRAMÁTICA VISUAL DE BLOQUES EDITORIALES V2
   ========================================================================== */

.block-mensaje-central {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 5px solid var(--mera-title-deep);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem 1.75rem;
  margin: 2.25rem 0;
  box-shadow: var(--shadow-sm);
}

.block-mensaje-central .block-title {
  font-weight: 700;
  color: var(--mera-title-deep);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.block-regla-mera {
  background: var(--mera-callout);
  border: 1px solid var(--line);
  border-left: 5px solid var(--mera-purple-mid);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem 1.75rem;
  margin: 2.25rem 0;
}

.block-regla-mera .block-title {
  font-weight: 700;
  color: var(--mera-purple-mid);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.block-pregunta-orientadora {
  background: linear-gradient(135deg, rgba(212, 217, 244, 0.3) 0%, rgba(252, 237, 234, 0.3) 100%);
  border: 1px solid var(--line);
  border-left: 5px solid var(--mera-purple-mid);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.35rem 1.6rem;
  margin: 2rem 0;
  color: var(--mera-title-deep);
  font-weight: 600;
}

.block-ejemplo {
  background: var(--mera-lavender-1);
  border: 1px solid var(--line);
  border-left: 5px solid #3c6eb0;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem 1.75rem;
  margin: 2.25rem 0;
}

.block-ejemplo .block-title {
  font-weight: 700;
  color: #2c4488;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.block-alerta {
  background: var(--mera-rose-soft);
  border: 1px solid rgba(209, 73, 106, 0.25);
  border-left: 5px solid #d1496a;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem 1.75rem;
  margin: 2.25rem 0;
}

.block-alerta .block-title {
  font-weight: 700;
  color: #9c2042;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.block-buena-practica {
  background: var(--mera-green-soft);
  border: 1px solid rgba(56, 158, 84, 0.25);
  border-left: 5px solid var(--mera-green);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem 1.75rem;
  margin: 2.25rem 0;
}

.block-buena-practica .block-title {
  font-weight: 700;
  color: #1e6b36;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

/* Comparativa SÍ es vs NO es */
.boundary-comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  margin: 2.5rem 0;
}

.boundary-box {
  border-radius: var(--radius);
  padding: 1.85rem;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.boundary-yes {
  background: rgba(217, 242, 208, 0.25);
  border-top: 4px solid var(--mera-green);
}

.boundary-no {
  background: rgba(252, 237, 234, 0.5);
  border-top: 4px solid #d1496a;
}

.boundary-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
}

.boundary-yes .boundary-header { color: #1e6b36; }
.boundary-no .boundary-header { color: #9c2042; }

/* Grid de Perfiles y Tarjetas */
.card-grid-2col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card-grid-3col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.info-feature-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.info-feature-card:hover {
  border-color: var(--mera-purple-mid);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.info-feature-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 1rem;
  object-fit: contain;
}

.info-feature-card h4 {
  margin-top: 0;
  font-size: 1.15rem;
  color: var(--mera-title-deep);
  margin-bottom: 0.5rem;
}

.info-feature-card p {
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ==========================================================================
   TABLAS INSTITUCIONALES EDITORIALES V2
   ========================================================================== */

.table-container {
  width: 100%;
  overflow-x: auto;
  margin: 2.5rem 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  background: var(--paper);
}

.icade-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  text-align: left;
}

.icade-table th {
  background: var(--mera-title-deep);
  color: var(--paper);
  font-weight: 700;
  padding: 14px 18px;
  border-bottom: 2px solid var(--line);
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.icade-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  vertical-align: top;
  line-height: 1.6;
}

.icade-table tbody tr:nth-child(even) {
  background: var(--mera-callout);
}

.icade-table tbody tr:hover td {
  background: rgba(212, 217, 244, 0.2);
}

.icade-table tr:last-child td {
  border-bottom: none;
}

/* Diagramas de Cadena y Ruta */
.pipeline-diagram {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  background: var(--mera-callout);
  padding: 1.85rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin: 2.25rem 0;
}

.pipeline-node {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1.15rem 1.35rem;
  border-radius: var(--radius-sm);
  text-align: center;
  flex: 1;
  min-width: 145px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pipeline-node:hover {
  border-color: var(--mera-purple-mid);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.pipeline-node-num {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--mera-purple-mid);
  margin-bottom: 4px;
}

.pipeline-node-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--mera-title-deep);
}

.pipeline-node-desc {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 4px;
}

.pipeline-arrow {
  color: var(--mera-lavender-3);
  font-size: 1.3rem;
  font-weight: 800;
}

/* Esquemas Visuales */
.visual-schema-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.85rem;
  margin: 2.5rem 0;
  box-shadow: var(--shadow-sm);
}

.visual-schema-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.visual-schema-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(72, 48, 124, 0.08);
  padding: 8px;
  object-fit: contain;
  flex-shrink: 0;
}

.visual-schema-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--mera-title-deep);
  margin: 0;
}

/* Chips de Alerta */
.alert-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
}

.alert-green { background: rgba(56, 158, 84, 0.15); color: #155724; }
.alert-yellow { background: rgba(255, 193, 7, 0.25); color: #856404; }
.alert-red { background: rgba(220, 53, 69, 0.15); color: #721c24; }

/* Layout de Capítulo */
.chapter-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3.5rem;
  align-items: start;
  padding: 3.5rem 0 5rem;
}

.chapter-sidebar {
  position: sticky;
  top: 96px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding-right: 1rem;
}

.toc-card {
  background: var(--mera-callout);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.toc-title {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mera-title-deep);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

.toc-nav {
  list-style: none;
}

.toc-item {
  margin-bottom: 0.4rem;
}

.toc-link {
  display: block;
  font-size: 0.87rem;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  line-height: 1.35;
  transition: var(--transition);
}

.toc-link:hover {
  background: rgba(72, 48, 124, 0.06);
  color: var(--mera-purple);
}

.toc-link.active {
  background: var(--mera-purple);
  color: var(--paper);
  font-weight: 600;
}

.chapter-body {
  min-width: 0;
}

.chapter-banner {
  background: var(--mera-callout);
  border-bottom: 1px solid var(--line);
  padding: 3.5rem 0 2.75rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--mera-purple);
}

.breadcrumb-sep {
  color: var(--mera-lavender-3);
}

.chapter-header-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mera-purple-mid);
  margin-bottom: 0.5rem;
}

/* Selector Rápido de Capítulo en el Banner */
.chapter-quick-select-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.chapter-select-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.chapter-select {
  padding: 10px 38px 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23281370' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat right 12px center;
  appearance: none;
  -webkit-appearance: none;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--mera-title-deep);
  cursor: pointer;
  outline: none;
  transition: var(--transition);
  max-width: 100%;
}

.chapter-select:focus {
  border-color: var(--mera-purple-mid);
  box-shadow: 0 0 0 3px rgba(92, 58, 153, 0.15);
}

/* Tratamiento Especial Capítulo 4: Sub-tabs MERA */
.mera-tabs-nav {
  display: flex;
  gap: 8px;
  background: var(--mera-callout);
  padding: 6px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin-bottom: 2.5rem;
  position: sticky;
  top: 86px;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.mera-tab-btn {
  flex: 1;
  text-align: center;
  padding: 10px 16px;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  border: none;
  background: none;
  cursor: pointer;
  transition: var(--transition);
}

.mera-tab-btn:hover {
  color: var(--mera-purple);
}

.mera-tab-btn.active {
  background: var(--paper);
  color: var(--mera-title-deep);
  box-shadow: var(--shadow-sm);
}

/* Paginación de Capítulos */
.chapter-pagination {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.page-nav-card {
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.5rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: var(--transition);
  max-width: 48%;
  flex: 1;
}

.page-nav-card:hover {
  border-color: var(--mera-purple-mid);
  background: var(--mera-callout);
  transform: translateY(-2px);
}

.page-nav-card.next {
  text-align: right;
}

.page-nav-sub {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.page-nav-title {
  font-weight: 700;
  color: var(--mera-title-deep);
  font-size: 1rem;
}

/* Listas */
.content-list {
  margin: 1.25rem 0 1.75rem 1.5rem;
}

.content-list li {
  margin-bottom: 0.65rem;
  padding-left: 0.5rem;
  color: var(--ink);
  font-size: clamp(1rem, 1.1vw, 1.125rem);
}

/* Herramientas, Glosario y Buscador */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  background: var(--mera-callout);
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill-btn {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: var(--transition);
}

.pill-btn:hover {
  border-color: var(--mera-purple-mid);
  color: var(--mera-purple);
}

.pill-btn.active {
  background: var(--mera-purple);
  color: var(--paper);
  border-color: var(--mera-purple);
}

.search-input-wrapper {
  position: relative;
  min-width: 260px;
}

.search-input {
  width: 100%;
  padding: 10px 14px 10px 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  outline: none;
  background: var(--paper);
  color: var(--ink);
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--mera-purple-mid);
  box-shadow: 0 0 0 3px rgba(92, 58, 153, 0.12);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.tools-catalog {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
}

.tool-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--mera-lavender-3);
}

.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.tool-badge {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(72, 48, 124, 0.08);
  color: var(--mera-purple);
}

.tool-stage {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
}

.tool-card h3 {
  font-size: 1.15rem;
  margin-top: 0;
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.tool-card p {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.tool-card-footer {
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.glossary-az {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 2rem;
}

.az-btn {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--paper);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--mera-purple);
  cursor: pointer;
  transition: var(--transition);
}

.az-btn:hover, .az-btn.active {
  background: var(--mera-purple);
  color: var(--paper);
  border-color: var(--mera-purple);
}

.az-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.glossary-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.glossary-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  transition: var(--transition);
}

.glossary-card:hover {
  border-color: var(--mera-lavender-3);
  box-shadow: var(--shadow-sm);
}

.glossary-term {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--mera-title-deep);
  margin-bottom: 0.5rem;
}

.glossary-def {
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.6;
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.result-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  transition: var(--transition);
}

.result-card:hover {
  border-color: var(--mera-purple-mid);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.result-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--mera-callout);
  color: var(--mera-purple);
  margin-bottom: 0.5rem;
}

.result-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mera-title-deep);
  margin-bottom: 0.4rem;
}

.result-snippet {
  font-size: 0.9rem;
  color: var(--muted);
}

.highlight {
  background: var(--mera-rose-soft);
  font-weight: bold;
  padding: 0 2px;
  border-radius: 2px;
}

/* Rutas Prácticas */
.routes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.route-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  transition: var(--transition);
}

.route-card:hover {
  background: var(--mera-callout);
  border-color: var(--mera-purple-mid);
  color: var(--mera-title-deep);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.route-card svg {
  flex-shrink: 0;
  color: var(--mera-purple-mid);
}

/* Grid de Capítulos */
.chapters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.85rem;
}

.chapter-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.chapter-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--mera-lavender-3);
}

.chapter-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.chapter-num {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mera-purple-mid);
  background: rgba(92, 58, 153, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.chapter-card h3 {
  font-size: 1.25rem;
  margin-top: 0;
  margin-bottom: 0.85rem;
  line-height: 1.3;
}

.chapter-card p {
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
  line-height: 1.55;
}

.chapter-topics {
  list-style: none;
  margin-bottom: 1.75rem;
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.chapter-topics li {
  font-size: 0.86rem;
  color: var(--ink);
  padding: 3px 0 3px 18px;
  position: relative;
}

.chapter-topics li::before {
  content: "•";
  color: var(--mera-purple-mid);
  position: absolute;
  left: 4px;
  font-weight: bold;
}

/* Footer Institucional con Skyline */
.site-footer {
  background: var(--mera-title-deep);
  color: var(--paper);
  padding: 4.5rem 0 2.5rem;
  margin-top: auto;
  position: relative;
}

.footer-skyline-wrapper {
  margin-bottom: 3rem;
  opacity: 0.18;
  filter: brightness(0) invert(1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand h4 {
  color: var(--paper);
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  color: var(--mera-lavender-2);
  font-size: 0.92rem;
  line-height: 1.6;
}

.footer-col h5 {
  color: var(--paper);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--mera-lavender-2);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--paper);
}

.footer-bottom {
  border-top: 1px solid rgba(212, 217, 244, 0.15);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--mera-lavender-2);
}

/* Botón Volver Arriba */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--mera-purple);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--mera-purple-mid);
  transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .chapter-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .chapter-sidebar {
    display: none;
  }
  
  .boundary-comparison-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-deep);
    max-height: 80vh;
    overflow-y: auto;
  }
  
  .main-nav.open {
    display: block;
  }
  
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  
  .nav-link {
    width: 100%;
    padding: 10px 14px;
  }
  
  .dropdown-menu {
    display: none;
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-left: 2px solid var(--mera-lavender-2);
    border-top: none;
    border-right: none;
    border-bottom: none;
    border-radius: 0;
    padding: 6px 0 6px 12px;
    margin: 4px 0 8px 12px;
    width: calc(100% - 24px);
    background: transparent;
  }

  .nav-item-dropdown.dropdown-open .dropdown-menu {
    display: flex;
  }

  .header-actions {
    display: none;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .chapter-pagination {
    flex-direction: column;
  }
  
  .page-nav-card {
    max-width: 100%;
  }
}