/* ==========================================================================
   EDENV - Design System & Master Stylesheet
   Identity: Escuela Enfermería del Valle
   Primary Color: #0E64B4 (Refined Medical Blue)
   Accent Color: #FFD200 (Vibrant Yellow Gold - CRO High Conversion CTA)
   Tertiary Color: #0F172A (Modern Slate Navy)
   Neutral Background: #F8FAFC
   Typography: Montserrat (Headlines) & Plus Jakarta Sans (Body & UI)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* --------------------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette */
  --color-primary: #0E64B4;
  --color-primary-dark: #083D70;
  --color-primary-light: #EBF3FC;
  --color-primary-hover: #0A4F91;
  --color-primary-subtle: #F0F6FF;
  
  --color-accent: #FFD200;
  --color-accent-hover: #E6BD00;
  --color-accent-text: #0F172A;
  
  --color-tertiary: #0F172A;
  --color-neutral-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-white: #FFFFFF;
  
  --color-text-main: #1E293B;
  --color-text-muted: #64748B;
  --color-border: #E2E8F0;
  --color-border-subtle: #F1F5F9;
  
  --color-shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
  --color-shadow: 0 10px 25px -5px rgba(14, 100, 180, 0.08), 0 8px 10px -6px rgba(14, 100, 180, 0.04);
  --color-shadow-hover: 0 20px 30px -10px rgba(14, 100, 180, 0.16), 0 10px 10px -5px rgba(14, 100, 180, 0.08);

  /* Typography Tokens */
  --font-family-headline: 'Montserrat', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-family-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Spacing Tokens */
  --container-max-width: 1200px;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-family-body);
  background-color: var(--color-neutral-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-headline);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

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

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

/* --------------------------------------------------------------------------
   3. Typography Utility Classes
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.font-headline { font-family: var(--font-family-headline); }

/* --------------------------------------------------------------------------
   4. Layout Containers & Sections
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 5rem 0;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary-dark);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 650px;
  margin: 0 auto 3rem auto;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   5. Navigation Bar & Header
   -------------------------------------------------------------------------- */
.site-header {
  background-color: rgba(10, 67, 121, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: background-color var(--transition-fast);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo img {
  height: 44px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.75rem;
}

.nav-link {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-accent);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: var(--border-radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  color: var(--color-white);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.45rem 0.75rem;
  transition: all var(--transition-fast);
}

.mobile-nav-toggle:active {
  transform: scale(0.94);
  background: rgba(255, 255, 255, 0.2);
}

.mobile-only-nav-item {
  display: none;
}

/* --------------------------------------------------------------------------
   6. Buttons & Call to Actions (CTAs)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  font-family: var(--font-family-body);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(14, 100, 180, 0.3);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(180deg, #FFE033 0%, var(--color-accent) 100%);
  color: var(--color-accent-text);
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(255, 210, 0, 0.4);
}

.btn-accent:hover {
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: var(--color-accent-text);
  box-shadow: 0 6px 20px rgba(255, 210, 0, 0.5);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline-white {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--color-white);
  backdrop-filter: blur(4px);
}

.btn-outline-white:hover {
  background-color: var(--color-white);
  color: var(--color-primary-dark);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

/* Sticky WhatsApp Action (Mobile First) */
.sticky-wa-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: #25D366;
  color: var(--color-white);
  border-radius: var(--border-radius-full);
  padding: 0.85rem 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: all var(--transition-fast);
  animation: pulse-ring 3s infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6); }
  70% { box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

.sticky-wa-btn:hover {
  background-color: #20BA5A;
  color: var(--color-white);
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 10px 28px rgba(37, 211, 102, 0.5);
}

/* --------------------------------------------------------------------------
   7. Cards & Component UI
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: 2.25rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--color-shadow);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--color-shadow-hover);
  transform: translateY(-4px);
  border-color: #CBD5E1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: var(--border-radius-full);
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

/* --------------------------------------------------------------------------
   8. Hero Section (Home & Program Pages)
   -------------------------------------------------------------------------- */
.hero-wrapper {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 7rem 0 6rem 0;
  min-height: 540px;
  display: flex;
  align-items: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(8, 61, 112, 0.88) 0%, rgba(15, 23, 42, 0.82) 100%);
  z-index: 1;
}

.hero-wrapper .container {
  position: relative;
  z-index: 2;
}

.hero-content-card {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  max-width: 650px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.hero-title {
  font-size: 2.6rem;
  margin-bottom: 1rem;
  color: var(--color-primary-dark);
  font-weight: 800;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  line-height: 1.65;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   9. Features / Stat Cards (3 Columns)
   -------------------------------------------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: -3.5rem;
  position: relative;
  z-index: 20;
}

.stat-card {
  background-color: var(--color-white);
  padding: 2.25rem 1.75rem;
  border-radius: var(--border-radius-md);
  text-align: center;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  border-top: 4px solid var(--color-primary);
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 30px -8px rgba(14, 100, 180, 0.16);
  border-top-color: var(--color-accent);
}

.stat-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.25rem auto;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.5rem;
  transition: transform var(--transition-fast);
}

.stat-card:hover .stat-icon {
  transform: scale(1.1);
  background-color: #D6E8FB;
}

.stat-title {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary-dark);
}

/* --------------------------------------------------------------------------
   10. Featured Highlight Section (Centro de Simulación & Certificaciones)
   -------------------------------------------------------------------------- */
.highlight-section {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 3.5rem 2.5rem;
  box-shadow: 0 10px 30px var(--color-shadow);
  border: 1px solid var(--color-border);
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.feature-list {
  list-style: none;
  margin: 1.5rem 0;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
  color: var(--color-text-main);
}

/* Simulation Environments Grid/Tags */
.sim-tags-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.85rem;
  margin: 1.75rem 0;
}

.sim-tag-item {
  background-color: var(--color-neutral-bg);
  border: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  transition: all var(--transition-fast);
}

.sim-tag-item:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.sim-tag-item i {
  color: var(--color-primary);
  font-size: 1rem;
}

/* Certifications Badges Grid */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.cert-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 1.75rem;
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--color-shadow-sm);
  transition: all var(--transition-normal);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--color-shadow);
  border-left-color: var(--color-accent);
}

.cert-code {
  font-family: var(--font-family-headline);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.cert-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}

/* Dark Highlight Banner (Program pages) */
.dark-highlight-banner {
  background: linear-gradient(135deg, var(--color-tertiary) 0%, #1E293B 100%);
  color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 3.5rem 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.dark-highlight-banner h2 {
  color: var(--color-white);
}

.dark-highlight-banner .feature-item {
  color: rgba(255, 255, 255, 0.9);
}

/* --------------------------------------------------------------------------
   11. Program Offer Cards
   -------------------------------------------------------------------------- */
.offer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.offer-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.offer-card-body {
  flex-grow: 1;
}

.offer-card-footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   12. Accordion UI Component (Pénsum Académico)
   -------------------------------------------------------------------------- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.accordion-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: border-color var(--transition-fast);
}

.accordion-item.active {
  border-color: var(--color-primary);
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem;
  background-color: var(--color-white);
  border: none;
  font-family: var(--font-family-headline);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
}

.accordion-header:hover {
  background-color: #f2f7fc;
  color: var(--color-primary);
}

.accordion-item.active .accordion-header {
  background-color: #edf5fd;
  color: var(--color-primary);
}

.accordion-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: transform var(--transition-normal), background-color var(--transition-fast);
  color: var(--color-primary);
  flex-shrink: 0;
  margin-left: 1rem;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  background-color: var(--color-primary);
  color: var(--color-white);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  padding: 0 1.75rem;
  opacity: 0;
  visibility: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease, opacity 0.3s ease, visibility 0.3s;
  background-color: #ffffff;
}

.accordion-item.active .accordion-body {
  max-height: 1500px;
  padding: 1.5rem 1.75rem;
  opacity: 1;
  visibility: visible;
  border-top: 1px solid var(--color-border);
}

.accordion-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.accordion-list li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--color-text-dark);
  font-size: 0.95rem;
  line-height: 1.6;
}

.accordion-list li::before {
  content: "✔";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-weight: bold;
  font-size: 0.9rem;
}

.accordion-semester-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
  flex-wrap: wrap;
}

.accordion-semester-meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* --------------------------------------------------------------------------
   13. Student Portal Cards Grid
   -------------------------------------------------------------------------- */
.portal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.portal-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 250px;
}

.portal-card.highlighted-card {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  border-color: var(--color-primary-dark);
}

.portal-card.highlighted-card h3,
.portal-card.highlighted-card p {
  color: var(--color-white);
}

.portal-card.highlighted-card .btn-link {
  color: var(--color-accent);
}

.portal-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.portal-card.highlighted-card .portal-icon {
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary);
}

.btn-link:hover {
  gap: 0.7rem;
  color: var(--color-primary-dark);
}

/* --------------------------------------------------------------------------
   14. Contact Page Layout & Map Container
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.map-container {
  width: 100%;
  height: 100%;
  min-height: 380px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 16px var(--color-shadow);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  min-height: 380px;
  border: 0;
  display: block;
}

/* --------------------------------------------------------------------------
   15. Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: linear-gradient(180deg, var(--color-primary-dark) 0%, #06284D 100%);
  color: var(--color-white);
  padding: 4rem 0 2rem 0;
  margin-top: 5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-main-grid,
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  align-items: start;
}

@media (max-width: 992px) {
  .footer-main-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (max-width: 576px) {
  .footer-main-grid,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-col-title {
  color: var(--color-accent);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-family-headline);
  font-weight: 700;
}

.footer-nav-list {
  list-style: none;
  font-size: 0.925rem;
}

.footer-nav-list li {
  margin-bottom: 0.65rem;
}

.footer-nav-list a {
  color: rgba(255, 255, 255, 0.82);
  transition: color var(--transition-fast);
}

.footer-nav-list a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.footer-social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.05rem;
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-text);
  transform: translateY(-2px);
}

.footer-bottom {
  padding-top: 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  flex-wrap: wrap;
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   16. Diplomados Catalog & Visual Cards (Desktop & Base)
   -------------------------------------------------------------------------- */
.filter-bar,
.filter-tabs {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  padding: 0.65rem 1.35rem;
  border-radius: var(--border-radius-full);
  font-family: var(--font-family-body);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(14, 100, 180, 0.12);
}

.filter-btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(14, 100, 180, 0.3);
}

.diplomados-grid,
.diplomas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.diploma-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.diploma-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
}

.diploma-cover-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 ratio */
  background-color: #0e1a24;
  overflow: hidden;
}

.diploma-cover-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.diploma-card:hover .diploma-cover-img {
  transform: scale(1.05);
}

.diploma-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: rgba(15, 23, 42, 0.85);
  color: var(--color-accent);
  padding: 0.35rem 0.75rem;
  border-radius: var(--border-radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  backdrop-filter: blur(4px);
  letter-spacing: 0.5px;
}

.diploma-body {
  padding: 1.75rem 1.5rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.diploma-title {
  font-size: 1.3rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.diploma-meta-bar {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.diploma-meta-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.diploma-meta-item i {
  color: var(--color-primary);
}

.diploma-description {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.diploma-modules-preview {
  background-color: var(--color-neutral-bg);
  border-radius: var(--border-radius-sm);
  padding: 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
}

.diploma-modules-preview strong {
  color: var(--color-primary-dark);
  display: block;
  margin-bottom: 0.4rem;
}

.diploma-modules-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.diploma-modules-list li {
  padding: 0.25rem 0;
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.diploma-modules-list li i {
  color: var(--color-primary);
  font-size: 0.75rem;
}

.diploma-card-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
}

.diploma-card-actions .btn {
  flex: 1;
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   17. Media Queries & Responsive Design System (Mobile First Architecture)
   -------------------------------------------------------------------------- */

/* Tablet & Smaller Desktops (<= 992px) */
@media (max-width: 992px) {
  .grid-2col,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .stats-grid {
    margin-top: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .highlight-section,
  .dark-highlight-banner {
    padding: 2.5rem 1.75rem;
  }
}

/* Mobile & Small Tablets (<= 768px) */
@media (max-width: 768px) {
  /* Layout Spacing */
  .container {
    padding: 0 1.25rem;
  }

  .section-padding {
    padding: 3rem 0;
  }

  /* Header & Navigation */
  .header-container {
    height: 68px;
  }

  .brand-logo img {
    height: 38px;
    width: auto;
  }

  .header-actions {
    display: none;
  }

  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .mobile-only-nav-item {
    display: block;
    width: 100%;
  }

  .nav-menu {
    position: fixed;
    top: 68px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 68px);
    background: linear-gradient(180deg, #083D70 0%, #06284D 100%);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 2rem 1.5rem 3.5rem 1.5rem;
    gap: 0.85rem;
    transition: left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-menu li {
    width: 100%;
    list-style: none;
  }

  .nav-link {
    display: block;
    width: 100%;
    font-size: 1.05rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.95);
    padding: 0.85rem 1rem;
    border-radius: 8px;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    padding-left: 1.25rem;
  }

  .nav-link.active::after {
    display: none;
  }

  /* Typography & Headers */
  .hero-title {
    font-size: 1.95rem;
    line-height: 1.22;
    margin-bottom: 0.75rem;
  }

  .section-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
  }

  .section-subtitle {
    font-size: 0.98rem;
    line-height: 1.55;
    margin-bottom: 2rem;
  }

  .badge {
    font-size: 0.75rem;
    padding: 0.35rem 0.75rem;
    margin-bottom: 0.75rem;
  }

  /* Hero Cards */
  .hero-wrapper {
    padding: 3.5rem 0;
    min-height: auto;
  }

  .hero-content-card {
    padding: 2rem 1.25rem;
    border-radius: var(--border-radius-md);
    max-width: 100%;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  /* Floating WhatsApp Button - Compact FAB on mobile to avoid overlapping content */
  .sticky-wa-btn {
    bottom: 18px;
    right: 18px;
    width: 54px;
    height: 54px;
    padding: 0;
    border-radius: 50%;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
  }

  .sticky-wa-btn span {
    display: none;
  }

  .sticky-wa-btn i {
    font-size: 1.7rem;
    margin: 0;
  }

  /* Filter Bar - Modern Horizontal Swipeable Carousel */
  .filter-bar,
  .filter-tabs {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 0.5rem 1.25rem 1.25rem 1.25rem;
    margin-left: -1.25rem;
    margin-right: -1.25rem;
    margin-bottom: 2rem;
    gap: 0.5rem;
  }

  .filter-bar::-webkit-scrollbar,
  .filter-tabs::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex-shrink: 0;
    scroll-snap-align: start;
    white-space: nowrap;
    font-size: 0.85rem;
    padding: 0.55rem 1.15rem;
  }

  /* Cards Grids */
  .diplomados-grid,
  .diplomas-grid,
  .offer-grid,
  .portal-grid,
  .stats-grid,
  .cert-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .card,
  .stat-card,
  .cert-card,
  .portal-card {
    padding: 1.75rem 1.25rem;
  }

  .diploma-card {
    border-radius: var(--border-radius-md);
  }

  .diploma-body {
    padding: 1.5rem 1.25rem;
  }

  .diploma-title {
    font-size: 1.25rem;
  }

  .diploma-meta-bar {
    font-size: 0.8rem;
    gap: 0.6rem;
  }

  .diploma-description {
    font-size: 0.9rem;
    line-height: 1.55;
  }

  .diploma-modules-preview {
    padding: 0.85rem 1rem;
    font-size: 0.82rem;
  }

  .diploma-card-actions {
    flex-direction: column;
    gap: 0.6rem;
    width: 100%;
  }

  .diploma-card-actions .btn {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }

  /* Accordion Syllabi */
  .accordion-header {
    padding: 1.1rem 1.25rem;
    font-size: 0.98rem;
  }

  .accordion-item.active .accordion-body {
    padding: 1.25rem 1.25rem;
  }

  .accordion-semester-meta {
    flex-direction: column;
    gap: 0.4rem;
  }
}

/* Extra Small Screens (<= 480px) */
@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.2;
  }

  .section-title {
    font-size: 1.55rem;
  }

  .section-subtitle {
    font-size: 0.92rem;
    margin-bottom: 1.5rem;
  }

  .section-padding {
    padding: 2.25rem 0;
  }

  .card,
  .stat-card,
  .cert-card,
  .portal-card,
  .diploma-body {
    padding: 1.35rem 1rem;
  }
}

/* ==========================================================================
   Smooth Page Transitions & Dynamic Micro-Animations System
   ========================================================================== */

/* Top Navigation Progress Bar */
.page-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3.5px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent) 0%, #FFF066 60%, var(--color-primary) 100%);
  z-index: 99999;
  box-shadow: 0 0 12px rgba(255, 210, 0, 0.8), 0 0 4px rgba(255, 210, 0, 0.6);
  transition: width 0.35s cubic-bezier(0.1, 0.9, 0.2, 1), opacity 0.3s ease;
  pointer-events: none;
  border-radius: 0 4px 4px 0;
}

/* Page Entrance Animation */
@keyframes pageEntranceFade {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

main {
  animation: pageEntranceFade 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  will-change: opacity, transform;
}

body.page-transitioning main {
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

/* Scroll Reveal Animations */
.reveal-item {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-item.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger Delays for Grid Elements */
.reveal-item:nth-child(2) { transition-delay: 0.08s; }
.reveal-item:nth-child(3) { transition-delay: 0.16s; }
.reveal-item:nth-child(4) { transition-delay: 0.24s; }
.reveal-item:nth-child(5) { transition-delay: 0.32s; }
.reveal-item:nth-child(6) { transition-delay: 0.40s; }

/* Interactive Micro-Interactions */
.btn {
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn:active {
  transform: scale(0.97) !important;
}

.btn-accent {
  position: relative;
  overflow: hidden;
}

.btn-accent::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: none;
}

.btn-accent:hover::after {
  left: 150%;
  transition: all 0.65s ease;
}

.card, .portal-card, .stat-card {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.35s ease;
}

.card:hover, .portal-card:hover {
  transform: translateY(-5px);
  border-color: rgba(14, 100, 180, 0.25);
  box-shadow: 0 16px 36px -8px rgba(14, 100, 180, 0.14), 0 6px 12px -4px rgba(0, 0, 0, 0.04);
}

/* Floating WhatsApp Pulse Effect */
@keyframes pulseWhatsApp {
  0% {
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.35), 0 0 0 0 rgba(37, 211, 102, 0.45);
  }
  70% {
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.35), 0 0 0 12px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.35), 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

.sticky-wa-btn {
  animation: pulseWhatsApp 2.5s infinite;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.3s ease;
}

.sticky-wa-btn:hover {
  transform: scale(1.06);
}

/* Scrolled Header Effect */
.site-header {
  transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(8, 61, 112, 0.98);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}