/* ==========================================================================
   AQUILA EDUCACIÓN VIRTUAL - HOJA DE ESTILOS PRINCIPAL (styles.css)
   Réplica exacta del diseño institucional con HTML5 y CSS3 puro.
   Listo para despliegue directo en public_html de Hostinger.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES CSS (:root)
   -------------------------------------------------------------------------- */
:root {
  /* Paleta cromática oficial */
  --color-navy: #0e2148;
  --color-navy-dark: #0a1733;
  --color-navy-light: #14295f;
  --color-navy-card: #122752;
  --color-gold: #e0a324;
  --color-gold-hover: #c68f1e;
  --color-gold-light: #fef3c7;
  --color-yellow-highlight: #fbe100;
  --color-blue-bg: #eaf2fa;
  --color-blue-card: #dcebfa;
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-700: #334155;
  --color-gray-900: #0f172a;
  --color-whatsapp: #25d366;
  --color-success: #16a34a;
  --color-error: #dc2626;

  /* Tipografía */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Sombras y elevaciones */
  --shadow-xs: 0 1px 2px rgba(14, 33, 72, 0.05);
  --shadow-sm: 0 2px 6px rgba(14, 33, 72, 0.08);
  --shadow-md: 0 6px 18px rgba(14, 33, 72, 0.1);
  --shadow-lg: 0 12px 28px -4px rgba(14, 33, 72, 0.14);
  --shadow-xl: 0 20px 36px -6px rgba(14, 33, 72, 0.18);

  /* Bordes redondeados */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-pill: 9999px;

  /* Transiciones */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.25s ease-in-out;
}

/* --------------------------------------------------------------------------
   2. RESET Y ESTILOS BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  color: var(--color-gray-700);
  background-color: #ffffff;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

/* Skip link para accesibilidad */
.skip-link {
  position: absolute;
  top: -40px;
  left: 20px;
  background: var(--color-gold);
  color: var(--color-navy);
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: 15px;
}

/* Envoltorio de ancho máximo */
.container {
  width: 100%;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* --------------------------------------------------------------------------
   3. ENCABEZADO FIJO / HEADER (Sección 1)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #ffffff;
  box-shadow: 0 2px 12px rgba(14, 33, 72, 0.06);
  z-index: 100;
  transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(14, 33, 72, 0.12);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  gap: 20px;
}

/* Logo */
.header-logo a {
  display: flex;
  align-items: center;
}

.header-logo img {
  height: 70px;
  width: auto;
}

/* Menú de Navegación */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-weight: 500;
  font-size: 1.02rem;
  color: var(--color-navy);
  padding: 8px 4px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-gold);
}

.nav-link.active {
  font-weight: 700;
  color: var(--color-navy);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-navy);
  border-radius: var(--radius-pill);
}


/* Botones de acción Header */
.mobile-nav-actions {
  display: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-header-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-navy);
  color: var(--color-navy);
  font-weight: 600;
  font-size: 0.95rem;
  background: transparent;
  transition: var(--transition-fast);
}

.btn-header-outline:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-header-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-navy);
  background-color: var(--color-navy);
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.btn-header-solid:hover {
  background-color: var(--color-navy-light);
  border-color: var(--color-navy-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* Botón flotante header whatsapp pequeño */
.header-wa-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background-color: var(--color-whatsapp);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(37, 211, 102, 0.35);
  transition: var(--transition-fast);
}

.header-wa-btn:hover {
  transform: scale(1.08);
}

.header-wa-btn svg {
  width: 20px;
  height: 20px;
}

/* Botón menú móvil (Hamburguesa) */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-navy);
  z-index: 1001;
}

.mobile-menu-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  margin: 5px 0;
  background-color: var(--color-navy);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.mobile-menu-toggle.is-active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.is-active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   4. HERO SECTION (Sección 2)
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #e4f0fa 0%, #f4f9fd 50%, #ffffff 100%);
  padding: 40px 0 60px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 30px;
}

/* Columna de Texto */
.hero-content {
  padding-right: 15px;
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.08;
  color: var(--color-navy);
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.hero-highlight-box {
  margin-top: 6px;
  margin-bottom: 24px;
}

.hero-highlight {
  display: inline-block;
  background-color: var(--color-yellow-highlight);
  color: var(--color-navy);
  font-weight: 900;
  font-size: 2.1rem;
  padding: 4px 14px;
  line-height: 1.25;
  letter-spacing: -0.2px;
  border-radius: 4px;
  margin-top: 4px;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--color-gray-700);
  line-height: 1.55;
  margin-bottom: 34px;
  max-width: 540px;
  font-weight: 400;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 34px;
  background-color: var(--color-navy-card);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 15px rgba(14, 33, 72, 0.25);
  border: 2px solid var(--color-navy-card);
  transition: var(--transition-normal);
}

.btn-hero-primary:hover {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(224, 163, 36, 0.35);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  background-color: var(--color-navy-light);
  color: var(--color-white);
  font-weight: 600;
  font-size: 1.05rem;
  border-radius: var(--radius-pill);
  border: 2px solid var(--color-navy-light);
  box-shadow: 0 4px 15px rgba(20, 41, 95, 0.2);
  transition: var(--transition-normal);
}

.btn-hero-secondary:hover {
  background-color: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
  transform: translateY(-2px);
}

/* Columna de Imagen Hero */
.hero-image-col {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 520px;
  display: flex;
  justify-content: center;
}

.hero-main-photo {
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 15px 25px rgba(14, 33, 72, 0.12));
}

/* Insignia / Medalla flotante */
.hero-badge-overlay {
  position: absolute;
  bottom: 20px;
  right: -10px;
  width: 90%;
  max-width: 360px;
  z-index: 5;
  animation: badgeFloat 4s ease-in-out infinite alternate;
}

@keyframes badgeFloat {
  0% { transform: translateY(0); }
  100% { transform: translateY(-6px); }
}

/* --------------------------------------------------------------------------
   5. FRANJA DE 4 TARJETAS (Sección 3)
   -------------------------------------------------------------------------- */
.stripe-cards-section {
  padding: 40px 0 50px;
  background-color: #ffffff;
}

.stripe-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stripe-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stripe-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.stripe-card-header {
  background-color: var(--color-gold);
  padding: 24px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 105px;
}

.stripe-card-header img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.stripe-card-body {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: 22px 18px 26px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.stripe-card-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
  line-height: 1.25;
}

.stripe-card-text {
  font-size: 0.88rem;
  color: #d1d9e6;
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   6. ESTRUCTURA ACADÉMICA (Sección 4)
   -------------------------------------------------------------------------- */
.academic-section {
  padding: 50px 0 60px;
  background: linear-gradient(180deg, #f3f8fd 0%, #e9f2fa 100%);
}

.section-heading-center {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-navy);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 35px;
}

.academic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.academic-card {
  background-color: var(--color-blue-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal);
}

.academic-card:hover {
  transform: translateY(-4px);
}

.academic-header-gold {
  background-color: var(--color-gold);
  color: var(--color-navy);
  padding: 14px 24px;
  font-weight: 800;
  font-size: 1.12rem;
  line-height: 1.3;
}

.academic-content-area {
  padding: 20px 24px 16px;
}

.academic-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.academic-list li {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-navy);
}

.academic-list li::before {
  content: '';
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background-color: #3b82f6;
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 1px #3b82f6;
  margin-right: 12px;
}

/* Caja blanca interior de modalidad */
.academic-inner-box {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin: 0 20px 20px;
  box-shadow: var(--shadow-xs);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.academic-inner-text {
  flex: 1;
}

.academic-inner-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 4px;
}

.academic-inner-desc {
  font-size: 0.86rem;
  color: var(--color-gray-700);
  line-height: 1.4;
  margin-bottom: 6px;
}

.academic-inner-time {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-navy);
}

.academic-inner-icon {
  flex-shrink: 0;
  width: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.academic-inner-icon img {
  width: 46px;
  height: 46px;
}

/* --------------------------------------------------------------------------
   7. CARACTERÍSTICAS DE LA OFERTA + FORMULARIO (Secciones 5 & 7)
   -------------------------------------------------------------------------- */
.features-form-section {
  padding: 60px 0 75px;
  background-color: #ffffff;
}

.features-form-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 36px;
  align-items: start;
}

/* Columna Izquierda: Grilla de 6 tarjetas */
.features-column-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 26px;
  line-height: 1.2;
}

.features-grid-6 {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.features-grid-6 > * {
  width: calc((100% - 32px) / 3);
}

.feature-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  padding: 24px 14px 20px;
  text-align: center;
  box-shadow: 0 3px 12px rgba(14, 33, 72, 0.04);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.feature-icon-wrap img {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.feature-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.3;
}

/* Columna Derecha: Formulario Azul Marino */
.form-card-navy {
  background-color: var(--color-navy);
  border-radius: var(--radius-xl);
  padding: 34px 28px;
  box-shadow: var(--shadow-xl);
  color: var(--color-white);
}

.form-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-white);
  text-align: center;
  margin-bottom: 4px;
}

.form-subtitle {
  font-size: 0.92rem;
  color: #9cb1d4;
  text-align: center;
  margin-bottom: 24px;
}

.lead-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-group {
  position: relative;
}

.form-input, .form-select {
  width: 100%;
  padding: 13px 18px;
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  border: 1.5px solid #ffffff;
  color: var(--color-navy);
  font-size: 0.95rem;
  font-weight: 500;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
  color: #64748b;
  font-weight: 400;
}

.form-input:focus, .form-select:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(224, 163, 36, 0.4);
}

.form-input.is-invalid, .form-select.is-invalid {
  border-color: #ef4444;
  background-color: #fef2f2;
}

.form-error-msg {
  display: none;
  font-size: 0.78rem;
  color: #fca5a5;
  margin-top: 4px;
  padding-left: 4px;
}

.form-input.is-invalid + .form-error-msg,
.form-select.is-invalid + .form-error-msg {
  display: block;
}

/* Custom select styling */
.select-wrapper {
  position: relative;
}

.select-wrapper::after {
  content: '▼';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.7rem;
  color: var(--color-navy);
  pointer-events: none;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.btn-form-submit {
  width: 100%;
  padding: 14px 20px;
  margin-top: 6px;
  background-color: #2a4e82; /* En imagen es azul profundo o dorado */
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  transition: var(--transition-normal);
}

.btn-form-submit:hover {
  background-color: var(--color-gold);
  color: var(--color-navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(224, 163, 36, 0.35);
}

.form-feedback-alert {
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  text-align: center;
}

.form-feedback-alert.success {
  display: block;
  background-color: #065f46;
  color: #ecfdf5;
  border: 1px solid #10b981;
}

.form-feedback-alert.error {
  display: block;
  background-color: #7f1d1d;
  color: #fef2f2;
  border: 1px solid #ef4444;
}

/* --------------------------------------------------------------------------
   8. FOOTER (Sección 8)
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-navy-dark);
  color: #cbd5e1;
  padding: 55px 0 25px;
  font-size: 0.88rem;
}

.footer-columns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 35px;
}

.footer-col-title {
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 14px;
  text-transform: capitalize;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links-list a {
  color: #94a3b8;
  transition: color var(--transition-fast);
  line-height: 1.35;
}

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

/* Redes Sociales */
.social-icons-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 6px;
}

.social-icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--color-white);
  transition: var(--transition-fast);
}

.social-icon-circle:hover {
  background-color: var(--color-gold);
  color: var(--color-navy);
  transform: translateY(-2px);
}

.social-icon-circle svg {
  width: 16px;
  height: 16px;
}

.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
  color: #64748b;
  font-size: 0.82rem;
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

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

/* --------------------------------------------------------------------------
   9. PÁGINA "NOSOTROS" (nosotros.html)
   -------------------------------------------------------------------------- */
.page-hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  color: var(--color-white);
  padding: 60px 0 90px;
  text-align: center;
}

.page-hero-title {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.page-hero-subtitle {
  font-size: 1.15rem;
  color: #cbd5e1;
  max-width: 680px;
  margin: 0 auto;
}

/* Misión y Visión superpuestas */
.mission-vision-section {
  margin-top: -55px;
  margin-bottom: 60px;
}

.mission-vision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.mv-card {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 40px 34px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-100);
  transition: transform var(--transition-normal);
}

.mv-card:hover {
  transform: translateY(-5px);
}

.mv-card-tag {
  display: inline-block;
  background-color: var(--color-gold-light);
  color: #92400e;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.mv-card-title {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 16px;
}

.mv-card-text {
  color: var(--color-gray-700);
  font-size: 1.02rem;
  line-height: 1.7;
}

/* Valores Institucionales con borde superior dorado */
.values-section {
  padding: 40px 0 80px;
  background-color: #f8fafc;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.value-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  border-top: 5px solid var(--color-gold);
  padding: 28px 22px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.value-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.value-card-desc {
  font-size: 0.92rem;
  color: var(--color-gray-700);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   10. PÁGINA "CONTACTO" (contacto.html)
   -------------------------------------------------------------------------- */
.contact-section {
  padding: 50px 0 80px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}

.contact-info-card {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-xl);
  padding: 38px 30px;
  border: 1px solid var(--color-gray-200);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-gold-light);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 4px;
}

.contact-info-detail {
  font-size: 0.95rem;
  color: var(--color-gray-700);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   11. BOTÓN GLOBAL FLOTANTE DE WHATSAPP
   -------------------------------------------------------------------------- */
.wa-floating-btn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 60px;
  height: 60px;
  background-color: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  box-shadow: 0 4px 18px rgba(37, 211, 102, 0.45);
  z-index: 999;
  cursor: pointer;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  animation: waPulse 2.8s infinite;
}

.wa-floating-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.6);
}

.wa-floating-btn svg {
  width: 34px;
  height: 34px;
}

/* Tooltip WhatsApp */
.wa-tooltip {
  position: absolute;
  right: 72px;
  background-color: var(--color-navy);
  color: var(--color-white);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  pointer-events: none;
}

.wa-tooltip::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -6px;
  transform: translateY(-50%);
  border-width: 6px 0 6px 6px;
  border-style: solid;
  border-color: transparent transparent transparent var(--color-navy);
}

.wa-floating-btn:hover .wa-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

@keyframes waPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  70% {
    box-shadow: 0 0 0 16px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* --------------------------------------------------------------------------
   12. RESPONSIVE DESIGN & MEDIA QUERIES
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .hero-highlight {
    font-size: 1.7rem;
  }
  .stripe-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-form-grid {
    grid-template-columns: 1fr;
  }
  .form-card-navy {
    max-width: 620px;
    margin: 0 auto;
    width: 100%;
  }
  .footer-columns-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 900px) {
  /* Menú Móvil */
  .mobile-menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 78px;
    left: 0;
    width: 100%;
    background-color: #ffffff;
    padding: 26px 20px 32px;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 16px 36px rgba(14, 33, 72, 0.18);
    border-top: 1px solid #f1f5f9;
    border-bottom: 4px solid var(--color-gold);
    z-index: 999;
    max-height: calc(100vh - 78px);
    overflow-y: auto;
    /* Estado completamente oculto por defecto */
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-16px);
    transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 8px;
    text-align: center;
  }

  .nav-link {
    display: block;
    font-size: 1.12rem;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
  }

  .nav-link:hover, .nav-link.active {
    background-color: var(--color-blue-bg);
  }

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


  .header-actions {
    display: none;
  }

  .mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #f1f5f9;
  }

  .mobile-nav-actions a {
    width: 100%;
    text-align: center;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    padding-right: 0;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-badge-overlay {
    position: relative;
    bottom: auto;
    right: auto;
    margin-top: -20px;
    width: 100%;
  }

  .academic-grid {
    grid-template-columns: 1fr;
  }

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

  .mission-vision-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .header-container {
    height: 66px;
    padding-left: 16px;
    padding-right: 16px;
  }
  .header-logo img {
    height: 38px;
    max-width: 175px;
  }
  .site-nav {
    top: 66px;
    max-height: calc(100vh - 66px);
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-highlight {
    font-size: 1.35rem;
    padding: 2px 8px;
  }
  .stripe-cards-grid {
    grid-template-columns: 1fr;
  }
  .features-grid-6 > * {
    width: 100%;
  }
  .values-grid {
    grid-template-columns: 1fr;
  }
  .footer-columns-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
  }
  .wa-floating-btn {
    bottom: 20px;
    right: 20px;
    width: 52px;
    height: 52px;
  }
  .wa-floating-btn svg {
    width: 28px;
    height: 28px;
  }
}