/* ============================================
   DOREXA - Sistema de Diseño Institucional
   Color Primario: #2A363B
   Acentos: #00798C, #E84A5F, #FF8C42
   ============================================ */

:root {
  --primary: #2A363B;
  --secondary: #F7F7F7;
  --accent-teal: #00798C;
  --accent-red: #E84A5F;
  --accent-orange: #FF8C42;
  --text-primary: #2A363B;
  --text-secondary: #6C757D;
  --border: #CED4DA;
  --bg-dark: #343A40;
  --white: #FFFFFF;
}

/* ============================================
   RESET Y TIPOGRAFÍA BASE
   ============================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Georgia', 'Garamond', serif;
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--white);
}

/* Tipografía de Encabezados */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  text-transform: none;
  margin-bottom: 2rem;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* ============================================
   CONTENEDOR Y ESTRUCTURA
   ============================================ */

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}

.section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: none;
}

.section.full-width {
  padding: 5rem 0;
  width: 100%;
}

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

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

.section.bg-accent {
  background-color: var(--accent-teal);
  color: var(--white);
}

/* ============================================
   GRID Y DISPOSICIÓN
   ============================================ */

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 2rem;
}

.grid-col-6 {
  grid-column: span 6;
}

.grid-col-4 {
  grid-column: span 4;
}

.grid-col-3 {
  grid-column: span 3;
}

.grid-col-12 {
  grid-column: span 12;
}

.flex {
  display: flex;
  gap: 2rem;
}

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

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

/* ============================================
   HEADER Y NAVEGACIÓN
   ============================================ */

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--white);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  padding: 1rem 0;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  font-family: 'Helvetica', 'Arial', sans-serif;
  letter-spacing: 0.15em;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: var(--text-primary);
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.95rem;
  font-weight: 400;
  transition: color 0.2s ease-in-out;
}

nav a:hover,
nav a.active {
  color: var(--accent-teal);
  text-decoration: underline;
  text-decoration-color: var(--accent-teal);
  text-underline-offset: 5px;
}

/* Ajuste para el body con header fijo */
body {
  padding-top: 60px;
}

/* ============================================
   TARJETAS Y MÓDULOS
   ============================================ */

.card {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem;
  background-color: var(--white);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease-in-out;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  border-color: var(--accent-orange);
}

.card h3 {
  margin-top: 0;
}

/* ============================================
   IMÁGENES
   ============================================ */

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

.image-container {
  overflow: hidden;
  border-radius: 4px;
}

.image-cinematic {
  filter: contrast(1.1) saturate(1.05);
  object-fit: cover;
}

/* ============================================
   BOTONES
   ============================================ */

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border: 2px solid var(--text-primary);
  background-color: transparent;
  color: var(--text-primary);
  text-decoration: none;
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  letter-spacing: 0.05em;
}

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

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

.btn-primary:hover {
  background-color: #005f73;
  border-color: #005f73;
}

/* ============================================
   LISTAS Y CONTENIDO
   ============================================ */

ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
  line-height: 1.8;
}

blockquote {
  border-left: 4px solid var(--accent-teal);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background-color: var(--primary);
  color: var(--white);
  padding: 3rem 0;
  margin-top: 3rem;
  border-top: 1px solid var(--border);
}

footer .container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

footer h4 {
  color: var(--white);
  margin-bottom: 1rem;
}

footer a {
  color: var(--accent-teal);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

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

footer p {
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 0.5rem;
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .grid-col-6 {
    grid-column: span 12;
  }
  
  .grid-col-4 {
    grid-column: span 6;
  }
  
  .grid-col-3 {
    grid-column: span 12;
  }
  
  footer .container {
    grid-template-columns: 1fr;
  }
  
  nav ul {
    gap: 1rem;
  }
  
  nav a {
    font-size: 0.85rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  body {
    font-size: 16px;
  }
  
  .flex {
    flex-direction: column;
  }
  
  nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .section {
    padding: 3rem 0;
  }
}

/* ============================================
   UTILIDADES
   ============================================ */

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-secondary);
}

.mt-4 {
  margin-top: 2rem;
}

.mb-4 {
  margin-bottom: 2rem;
}

.py-5 {
  padding: 3rem 0;
}

.border-accent {
  border-color: var(--accent-teal);
}

.separator {
  height: 1px;
  background-color: var(--border);
  margin: 3rem 0;
}