/* ==========================================================================
   EDITORIAL EDINUN - ESTILOS CORPORATIVOS SOBRIOS
   Estilo: Base blanca (#ffffff / #f8fafc), monocromático sobrio con acentos
   en Rojo Editorial (#c52222) y Azul Institucional (#0f3b68).
   Header 100% opaco sólido (#ffffff), sin transparencias al hacer scroll.
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-subtle: #f8fafc;
  --color-bg-muted: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;

  --color-text-main: #0f172a;
  --color-text-body: #334155;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;

  --color-primary: #0f3b68;       /* Azul Institucional */
  --color-primary-light: #1e5a9a;
  --color-primary-dark: #0a2542;
  --color-accent: #c52222;        /* Rojo Editorial EDINUN */
  --color-accent-hover: #a51818;
  --color-accent-subtle: #fef2f2;
  --color-gold: #b45309;          /* Dorado/Ámbar de excelencia */
  --color-gold-subtle: #fffbeb;

  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Newsreader', 'Georgia', serif;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-header: 0 2px 4px rgba(15, 23, 42, 0.06);

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --max-width: 1240px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-body);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  background-color: var(--color-bg);
  color: var(--color-text-body);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ==========================================================================
   BARRA DE DEMO OBLIGATORIA SIMCODEC (SUPERIOR)
   ========================================================================== */
.simcodec-banner {
  background-color: #0f172a;
  color: #f8fafc;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.5rem 1rem;
  text-align: center;
  position: relative;
  z-index: 1000;
  border-bottom: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.simcodec-banner strong {
  color: #38bdf8;
  font-weight: 600;
}

.simcodec-banner .badge-tag {
  background-color: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.725rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   HEADER CORPORATIVO (100% OPACO, SIN TRANSPARENCIAS)
   ========================================================================== */
.header-wrapper {
  position: sticky;
  top: 0;
  z-index: 990;
  background-color: #ffffff !important; /* 100% opaco */
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-header);
}

/* Sub-barra de información institucional rápida */
.header-topbar {
  background-color: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.header-topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.topbar-links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

.main-navbar {
  background-color: #ffffff !important; /* Sólido absoluto */
  padding: 0.75rem 1rem;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* Logotipo */
.brand-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  flex-shrink: 0;
}

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

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

.brand-name {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  line-height: 1.1;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
}

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

.brand-tagline {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* Enlaces de Navegación */
.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.875rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-main);
  padding: 0.375rem 0.15rem;
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* Botones Sobrios */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5625rem 1.125rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border: 1px solid var(--color-primary);
}

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

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  border: 1px solid var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn-outline {
  background-color: #ffffff;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg-subtle);
}

.btn-sm {
  font-size: 0.8125rem;
  padding: 0.375rem 0.75rem;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.mobile-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-text-main);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ==========================================================================
   DROPDOWN DE PLATAFORMAS DIGITALES
   ========================================================================== */
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background-color: #ffffff;
  min-width: 280px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  z-index: 1001;
}

.dropdown.active .dropdown-menu {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-main);
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--color-bg-subtle);
}

.dropdown-item-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.dropdown-item-icon img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.dropdown-item-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
  line-height: 1.2;
}

.dropdown-item-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.125rem;
}

/* ==========================================================================
   HERO CORPORATIVO SOBRIO
   ========================================================================== */
.hero-section {
  background-color: #ffffff;
  padding: 3.5rem 0 3rem;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  width: fit-content;
  margin-bottom: 1.25rem;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-main);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

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

.hero-description {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-body);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

/* KPIs Sobrios */
.hero-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--color-border);
}

.kpi-item {
  display: flex;
  flex-direction: column;
}

.kpi-number {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.kpi-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  line-height: 1.35;
  margin-top: 0.25rem;
}

/* Card Visual Editorial en Hero */
.hero-visual {
  position: relative;
}

.hero-editorial-card {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-md);
}

.hero-editorial-banner {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.hero-editorial-banner img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.hero-card-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hero-card-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.hero-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.3;
}

.hero-card-desc {
  font-size: 0.8125rem;
  color: var(--color-text-body);
  line-height: 1.5;
}

.hero-quick-links {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.quick-link-box {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-main);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.quick-link-box:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg-subtle);
}

/* ==========================================================================
   SECCIONES GENERALES & ENCABEZADOS
   ========================================================================== */
.section-padding {
  padding: 4.5rem 0;
}

.bg-white {
  background-color: #ffffff;
}

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

.section-header {
  margin-bottom: 3rem;
}

.section-header.text-center {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text-main);
  letter-spacing: -0.02em;
  margin-bottom: 0.875rem;
}

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

/* ==========================================================================
   AVALES INSTITUCIONALES & RECONOCIMIENTOS (PREMIOS Y LICITACIONES)
   ========================================================================== */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.award-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.award-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.award-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gold);
  background-color: var(--color-gold-subtle);
  border: 1px solid #fde68a;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  width: fit-content;
  margin-bottom: 1rem;
}

.award-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.award-desc {
  font-size: 0.8125rem;
  color: var(--color-text-body);
  line-height: 1.5;
  margin-top: auto;
}

/* ==========================================================================
   CATÁLOGO ESCOLAR - TABS Y GRID INTERACTIVO
   ========================================================================== */
.catalog-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.tab-btn {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--color-text-main);
  background-color: var(--color-bg-subtle);
}

.tab-btn.active {
  color: var(--color-primary);
  background-color: var(--color-bg-subtle);
  border-color: var(--color-border);
  font-weight: 700;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.book-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.book-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.book-thumb-wrap {
  background-color: var(--color-bg-subtle);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  min-height: 220px;
}

.book-thumb-wrap img {
  max-height: 180px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.book-card:hover .book-thumb-wrap img {
  transform: scale(1.02);
}

.book-badge-level {
  position: absolute;
  top: 0.875rem;
  left: 0.875rem;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  color: var(--color-primary);
}

.book-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.book-category {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.book-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.book-desc {
  font-size: 0.8125rem;
  color: var(--color-text-body);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.book-features {
  list-style: none;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.book-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.book-features li::before {
  content: "•";
  color: var(--color-accent);
  font-weight: bold;
}

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

/* ==========================================================================
   LITERATURA INFANTIL Y JUVENIL (COLECCIONES & NOVEDADES)
   ========================================================================== */
.lit-collections-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.lit-collection-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.lit-col-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.lit-col-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
}

.lit-col-desc {
  font-size: 0.875rem;
  color: var(--color-text-body);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.novlit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.novlit-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.novlit-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.novlit-img-wrap {
  background-color: var(--color-bg-subtle);
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.novlit-img-wrap img {
  height: 180px;
  width: auto;
  object-fit: contain;
}

.novlit-body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.novlit-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.3;
  margin-bottom: 0.375rem;
}

.novlit-genre {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.novlit-desc {
  font-size: 0.8125rem;
  color: var(--color-text-body);
  line-height: 1.45;
  margin-bottom: 1rem;
}

/* ==========================================================================
   ECOSISTEMA DIGITAL: DIGIAULA, CONECTA Y PLATAFORMAS
   ========================================================================== */
.digiaula-feature-box {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  margin-bottom: 3rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.digiaula-pills {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.digi-pill {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.875rem;
  background-color: var(--color-bg-subtle);
}

.digi-pill-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.digi-pill-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}

.eco-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 0.875rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.625rem;
  transition: all var(--transition-fast);
}

.eco-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.eco-logo-wrap {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.eco-logo-wrap img {
  max-width: 48px;
  max-height: 48px;
  object-fit: contain;
}

.eco-name {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.eco-type {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  line-height: 1.2;
}

/* ==========================================================================
   SERVICIOS PEDAGÓGICOS FJNE
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.service-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast);
}

.service-card:hover {
  border-color: var(--color-primary);
}

.service-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-border-hover);
  line-height: 1;
  margin-bottom: 0.875rem;
}

.service-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--color-text-body);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.service-bullets {
  list-style: none;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-top: auto;
}

.service-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.service-bullets li::before {
  content: "✓";
  color: var(--color-accent);
  font-weight: bold;
}

/* ==========================================================================
   CATÁLOGOS OFICIALES PARA DESCARGA
   ========================================================================== */
.catalogs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.catalog-download-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.catalog-download-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.catalog-cover-wrap {
  height: 240px;
  background-color: var(--color-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.catalog-cover-wrap img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  box-shadow: var(--shadow-sm);
}

.catalog-info {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.catalog-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.catalog-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.catalog-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

/* ==========================================================================
   CALCULADORA DE ADOPCIÓN CURRICULAR & COTIZADOR PARA INSTITUCIONES
   ========================================================================== */
.calc-wrapper {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
}

.calc-form-group {
  margin-bottom: 1.5rem;
}

.calc-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.calc-select, .calc-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-family: inherit;
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--color-text-main);
  transition: border-color var(--transition-fast);
}

.calc-select:focus, .calc-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.calc-checkboxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.calc-check-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-body);
  cursor: pointer;
}

.calc-check-item input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
}

.calc-summary-box {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.calc-summary-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.75rem;
}

.calc-perks-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.calc-perk {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-body);
}

.calc-perk-icon {
  color: #16a34a;
  font-weight: bold;
}

/* ==========================================================================
   GRUPO CORPORATIVO & ALIANZAS
   ========================================================================== */
.brands-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.brand-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.brand-item:hover {
  opacity: 1;
}

.brand-item img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.brand-item-name {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-main);
}

/* ==========================================================================
   CONTACTO CORPORATIVO & DISTRIBUCIÓN
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info-col {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-block {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-block-content h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.25rem;
}

.contact-block-content p {
  font-size: 0.875rem;
  color: var(--color-text-body);
  line-height: 1.5;
}

.contact-form-col {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 0.375rem;
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-family: inherit;
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--color-text-main);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* ==========================================================================
   FOOTER CORPORATIVO
   ========================================================================== */
.footer-main {
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col-brand p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 1rem 0 1.25rem;
}

.footer-heading {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-main);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--color-text-body);
  transition: color var(--transition-fast);
}

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

/* AVISO OBLIGATORIO DE SIMCODEC EN EL FOOTER */
.simcodec-footer-box {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-main);
}

.simcodec-footer-box strong {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   MODAL DE FICHA TÉCNICA
   ========================================================================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.6);
  z-index: 1100;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-container {
  background-color: #ffffff;
  border-radius: var(--radius-md);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.modal-close {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
}

.modal-body {
  padding: 1.5rem;
}

/* ==========================================================================
   RESPONSIVIDAD Y AJUSTES MÓVILES
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .awards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .novlit-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .catalogs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ecosystem-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .digiaula-feature-box {
    grid-template-columns: 1fr;
  }
  .calc-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-topbar {
    display: none;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
  }
  .nav-menu.active {
    display: flex;
  }
  .mobile-toggle {
    display: flex;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-kpis {
    grid-template-columns: repeat(2, 1fr);
  }
  .catalog-grid {
    grid-template-columns: 1fr;
  }
  .awards-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .lit-collections-row {
    grid-template-columns: 1fr;
  }
  .novlit-grid {
    grid-template-columns: 1fr;
  }
  .catalogs-grid {
    grid-template-columns: 1fr;
  }
  .ecosystem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .form-grid-2 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1140px) {
  .btn-text-full {
    display: none !important;
  }
  .btn-text-short {
    display: inline !important;
  }
  .nav-menu {
    gap: 0.5rem;
  }
  .nav-link {
    font-size: 0.775rem;
  }
}