/* ==========================================================================
   CIS Pensamiento Estratégico - Estilos Principales (Vanilla CSS Moderno)
   ========================================================================== */

:root {
  --primary-orange: #FF5500;
  --primary-orange-hover: #D94800;
  --dark-header: #1E1E1E;
  --dark-footer: #2B2B2B;
  --hero-bg: #EFEFEF;
  --contact-bg: #5B6268;
  --text-dark: #222222;
  --text-body: #333333;
  --text-muted: #666666;
  --text-light: #FFFFFF;
  --white: #FFFFFF;
  --border-light: #E0E0E0;
  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.06);
  --shadow-md: 0 5px 20px rgba(0,0,0,0.1);
  --font-main: 'Open Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px; /* Tamaño mínimo base */
}

body {
  font-family: var(--font-main);
  color: var(--text-body);
  background-color: var(--white);
  font-size: 1rem; /* 16px mínimo */
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

/* Top Bar */
.top-bar {
  background-color: var(--dark-header);
  color: var(--text-light);
  font-size: 1rem; /* Mínimo 16px */
  padding: 10px 0;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #DDDDDD;
  font-size: 1rem; /* 16px */
}

.top-bar a:hover {
  color: var(--primary-orange);
}

/* Main Navbar */
.navbar {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  padding-bottom: 14px;
}

.nav-brand img {
  height: 52px;
  width: auto;
}

.nav-menu {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-link {
  font-weight: 600;
  font-size: 1.05rem; /* 16.8px */
  color: var(--text-dark);
  padding: 6px 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-orange);
  transition: var(--transition);
}

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

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--text-dark);
  cursor: pointer;
}

/* ==========================================================================
   Hero / Banner Section
   ========================================================================== */
.hero-section {
  background-color: var(--hero-bg);
  padding: 60px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  align-items: center;
  gap: 40px;
}

.hero-graphic {
  display: flex;
  justify-content: center;
}

.hero-graphic img {
  max-width: 380px;
  width: 100%;
  filter: drop-shadow(0 10px 15px rgba(255,85,0,0.15));
}

.hero-content h1 {
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-content p {
  font-size: 1.25rem; /* 20px */
  color: var(--text-body);
}

/* ==========================================================================
   Oferta de Servicios
   ========================================================================== */
.oferta-section {
  padding: 80px 0;
  background-color: var(--white);
}

.oferta-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: stretch;
}

.oferta-text h2 {
  font-size: 1.75rem;
  color: var(--primary-orange);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.oferta-text p {
  font-size: 1.05rem; /* 16.8px */
  margin-bottom: 16px;
  color: #333;
  text-align: justify;
}

.catalogo-box {
  background-color: var(--primary-orange);
  color: var(--white);
  padding: 36px 28px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  box-shadow: var(--shadow-md);
}

.catalogo-box h3 {
  font-size: 1.4rem;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 16px;
}

.catalogo-box p {
  font-size: 1rem; /* 16px */
  margin-bottom: 24px;
  line-height: 1.5;
  opacity: 0.95;
}

.btn-catalogo {
  display: inline-block;
  background-color: var(--white);
  color: var(--primary-orange);
  font-weight: 700;
  font-size: 1rem; /* 16px */
  padding: 12px 30px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-catalogo:hover {
  background-color: #F0F0F0;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Video Section
   ========================================================================== */
.video-section {
  padding: 40px 0 80px;
  background-color: var(--white);
}

.video-container {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 9;
}

.video-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ==========================================================================
   Quiénes Somos & Pilares
   ========================================================================== */
.quienes-section {
  padding: 80px 0;
  background-color: #F8F9FA;
}

.quienes-header {
  text-align: center;
  max-width: 850px;
  margin: 0 auto 50px;
}

.quienes-header h2 {
  font-size: 1.85rem;
  color: var(--text-dark);
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 700;
}

.quienes-header p {
  font-size: 1.15rem; /* 18.4px */
  color: var(--text-body);
}

.pilares-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.pilar-card {
  background-color: var(--white);
  padding: 30px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary-orange);
  transition: var(--transition);
}

.pilar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pilar-card h3 {
  font-size: 1.15rem; /* 18.4px */
  color: var(--text-dark);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.pilar-card p {
  font-size: 1rem; /* 16px */
  color: var(--text-body);
}

/* ==========================================================================
   Servicios (Grid con iconos circulares)
   ========================================================================== */
.servicios-section {
  padding: 80px 0;
  background-color: var(--white);
}

.section-title-center {
  text-align: center;
  margin-bottom: 50px;
}

.section-title-center h2 {
  font-size: 2rem;
  color: var(--text-dark);
  text-transform: uppercase;
  font-weight: 700;
}

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.servicio-card {
  text-align: center;
  padding: 20px;
}

.icon-circle {
  width: 90px;
  height: 90px;
  background-color: var(--primary-orange);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 2.2rem;
  box-shadow: 0 8px 20px rgba(255,85,0,0.25);
  transition: var(--transition);
}

.servicio-card:hover .icon-circle {
  transform: scale(1.08);
  background-color: var(--primary-orange-hover);
}

.servicio-card h3 {
  font-size: 1.15rem; /* 18.4px */
  color: var(--text-dark);
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 700;
}

.servicio-card p {
  font-size: 1rem; /* 16px */
  color: var(--text-body);
  line-height: 1.6;
}

/* ==========================================================================
   Enfoque / Modelo de Solución
   ========================================================================== */
.enfoque-section {
  padding: 80px 0;
  background-color: #F8F9FA;
}

.enfoque-content {
  max-width: 900px;
  margin: 0 auto 40px;
  text-align: center;
}

.enfoque-content h2 {
  font-size: 1.85rem;
  color: var(--text-dark);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 700;
}

.enfoque-content h3 {
  font-size: 1.25rem; /* 20px */
  color: var(--primary-orange);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 600;
}

.enfoque-content p {
  font-size: 1.05rem; /* 16.8px */
  margin-bottom: 16px;
  color: var(--text-body);
  text-align: justify;
}

.enfoque-img-container {
  text-align: center;
  max-width: 850px;
  margin: 0 auto;
}

.enfoque-img-container img {
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Banner Naranja & Sección Análisis
   ========================================================================== */
.analisis-banner {
  background-color: var(--primary-orange);
  color: var(--white);
  padding: 40px 0;
  text-align: center;
}

.analisis-banner h2 {
  font-size: 2rem;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 700;
}

.analisis-banner p {
  font-size: 1.15rem; /* 18.4px */
  opacity: 0.95;
}

.analisis-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}

.analisis-card {
  position: relative;
  overflow: hidden;
  height: 220px;
  background-color: #222;
}

.analisis-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  opacity: 0.85;
}

.analisis-card:hover img {
  transform: scale(1.06);
  opacity: 1;
}

.analisis-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  display: flex;
  align-items: flex-end;
  padding: 18px;
  color: var(--white);
  font-size: 1rem; /* 16px */
  font-weight: 600;
}

/* ==========================================================================
   Contacto & Newsletter
   ========================================================================== */
.contacto-section {
  background-color: var(--contact-bg);
  color: var(--white);
  padding: 80px 0;
}

.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.contacto-info h2 {
  font-size: 1.85rem;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 700;
}

.contacto-info h3 {
  font-size: 1.25rem; /* 20px */
  margin-bottom: 20px;
  color: #E0E0E0;
}

.contacto-info p {
  font-size: 1.05rem; /* 16.8px */
  line-height: 1.6;
  margin-bottom: 24px;
  color: #E5E5E5;
}

.contacto-details {
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 1.05rem; /* 16.8px */
}

.contacto-details a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #FFFFFF;
}

.contacto-details a:hover {
  color: #FFD0B8;
}

.contacto-form form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contacto-form input,
.contacto-form textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  background-color: var(--white);
  color: var(--text-dark);
  font-family: inherit;
  font-size: 1rem; /* 16px mínimo */
}

.contacto-form input:focus,
.contacto-form textarea:focus {
  outline: none;
  border-color: var(--primary-orange);
  box-shadow: 0 0 0 3px rgba(255,85,0,0.3);
}

.btn-submit {
  background-color: transparent;
  color: var(--white);
  border: 2px solid var(--white);
  padding: 14px 28px;
  font-size: 1rem; /* 16px */
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-self: flex-start;
  transition: var(--transition);
}

.btn-submit:hover {
  background-color: var(--white);
  color: var(--contact-bg);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--dark-footer);
  color: #CCCCCC;
  padding: 40px 0 20px;
  font-size: 1rem; /* 16px mínimo */
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  font-size: 1rem; /* 16px */
}

.footer-links a {
  color: #CCCCCC;
}

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

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  font-size: 1rem; /* 16px */
}

/* ==========================================================================
   Media Queries / Responsividad
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid,
  .oferta-grid,
  .contacto-grid {
    grid-template-columns: 1fr;
  }
  
  .servicios-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .analisis-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .hero-content {
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--white);
    flex-direction: column;
    padding: 30px;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .servicios-grid {
    grid-template-columns: 1fr;
  }
  
  .analisis-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-content h1 {
    font-size: 1.85rem;
  }
}

@media (max-width: 480px) {
  .analisis-grid {
    grid-template-columns: 1fr;
  }
}