/* --- VARIABLES DE DISEÑO --- */
:root {
  /* Paleta de Colores - Profesional Corporativa */
  --color-primary-dark: #1a237e;
  --color-primary-medium: #3f51b5;
  --color-primary-light: #7986cb;
  
  /* Toques Creativos Vibrantes */
  --color-accent-green: #00b894;
  --color-accent-turquoise: #0984e3;
  --color-accent-purple: #6c5ce7;
  
  /* Neutros */
  --color-text-primary: #263238;
  --color-text-secondary: #607d8b;
  --color-bg-main: #fafafa;
  --color-bg-card: #ffffff;
  --color-border: #eceff1;
  
  /* Estados */
  --color-success: #43a047;
  --color-warning: #fb8c00;
  --color-error: #e53935;
  
  /* Espaciado */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  
  /* Tipografía */
  --font-family: 'aeonikPro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.25rem;
  --font-xl: 1.5rem;
  --font-2xl: 2rem;
  --font-3xl: 2.5rem;
  
  /* Sombras con profundidad */
  --shadow-sm: 0 1px 3px rgba(26, 35, 126, 0.12), 0 1px 2px rgba(26, 35, 126, 0.06);
  --shadow-md: 0 4px 6px rgba(26, 35, 126, 0.1), 0 2px 4px rgba(26, 35, 126, 0.06);
  --shadow-lg: 0 10px 25px rgba(26, 35, 126, 0.15), 0 5px 10px rgba(26, 35, 126, 0.08);
  --shadow-xl: 0 20px 40px rgba(26, 35, 126, 0.2), 0 10px 20px rgba(26, 35, 126, 0.1);
  
  /* Bordes redondeados */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Transiciones */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- RESET Y BASE --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- HEADER MEJORADO --- */
.title {
  width: 100%;
  height: auto;
  min-height: 80px;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-medium) 50%, var(--color-primary-light) 100%);
  color: white;
  border-radius: 0;
  box-shadow: var(--shadow-md);
  align-items: center;
  justify-content: space-between;
  display: flex;
  padding: var(--spacing-md) var(--spacing-xl);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.title:hover {
  box-shadow: var(--shadow-lg);
}

/* Logo mejorado */
.logo {
  font-size: var(--font-2xl);
  font-weight: 700;
  color: white;
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: transform var(--transition-fast);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.logo:hover {
  transform: translateY(-2px);
  color: var(--color-accent-turquoise);
}

/* Botones mejorados */
.btn {
  border: none;
  color: white;
  padding: 12px 24px;
  cursor: pointer;
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 500;
  transition: all var(--transition-base);
  text-decoration: none;
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.primary {
  background-color: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.primary:hover {
  background: var(--color-accent-turquoise);
  border-color: var(--color-accent-turquoise);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(9, 132, 227, 0.4);
}

/* --- FEATURED IMAGE / HERO SECTION --- */
.featured-image {
  width: 100%;
  background: linear-gradient(135deg, rgba(26, 35, 126, 0.05) 0%, rgba(121, 134, 203, 0.05) 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin: var(--spacing-lg) 0;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.featured-image:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

#network {
  width: 100%;
  height: auto;
  min-height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: white;
  box-shadow: var(--shadow-sm);
}

/* --- CARDS CONTAINER - BENTO BOX LAYOUT --- */
.cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

/* --- CARDS MEJORADAS --- */
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  overflow: hidden;
  border: 1px solid var(--color-border);
  position: relative;
  cursor: pointer;
  will-change: transform;
}

/* Efecto de gradiente sutil en hover */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, 
    var(--color-accent-green) 0%, 
    var(--color-accent-turquoise) 50%, 
    var(--color-accent-purple) 100%);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
}

.card:hover::before {
  transform: translateX(0);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  border-color: var(--color-primary-light);
}

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

/* Imágenes de las cards */
.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

/* Contenedor de contenido */
.container {
  padding: var(--spacing-md);
}

.container h4 {
  font-size: var(--font-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  transition: color var(--transition-fast);
}

.card:hover .container h4 {
  color: var(--color-primary-medium);
}

.container p {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* --- VARIANTES DE CARDS PARA BENTO BOX --- */
.card-xlarge {
  grid-column: span 3;
  grid-row: span 2;
}

.card-large {
  grid-column: span 2;
  grid-row: span 2;
}

.card-wide {
  grid-column: span 2;
}

.card-tall {
  grid-row: span 2;
}

.card-xlarge img {
  height: 350px;
  object-fit: cover;
}

.card-xlarge .container {
  padding: var(--spacing-lg);
}

.card-xlarge .container h4 {
  font-size: var(--font-xl);
  margin-bottom: var(--spacing-sm);
}

.card-xlarge .container p {
  font-size: var(--font-base);
  line-height: 1.6;
}

.card-large img {
  height: 300px;
}

.card-tall img {
  height: 100%;
  max-height: 400px;
}

/* --- BADGES Y ETIQUETAS --- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: var(--spacing-sm);
}

.badge-success {
  background: rgba(67, 160, 71, 0.1);
  color: var(--color-success);
}

.badge-info {
  background: rgba(9, 132, 227, 0.1);
  color: var(--color-accent-turquoise);
}

.badge-purple {
  background: rgba(108, 92, 231, 0.1);
  color: var(--color-accent-purple);
}

.vencido-naranja {
  background: rgba(251, 140, 0, 0.15);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

/* --- TOOLTIP MEJORADO --- */
.tooltip {
  position: fixed;
  background: rgba(15, 23, 42, 0.95); /* Fondo oscuro fijo para legibilidad */
  color: #ffffff;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  pointer-events: none;
  z-index: 10000;
  box-shadow: var(--shadow-xl);
  max-width: 300px;
  line-height: 1.4;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- FOOTER --- */
.footer {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-medium) 100%);
  color: white;
  padding: var(--spacing-xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer a {
  color: var(--color-accent-turquoise);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: white;
  text-decoration: underline;
}

.footer img {
  vertical-align: middle;
  transition: transform var(--transition-fast);
}

.footer img:hover {
  transform: scale(1.2);
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 1024px) {
  .cards-container {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
  }
  
  .card-xlarge {
    grid-column: span 2;
    grid-row: span 2;
  }
  
  .card-large,
  .card-wide {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .title {
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
  }
  
  .logo {
    font-size: var(--font-xl);
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 0.8rem;
  }
  
  .cards-container {
    grid-template-columns: 1fr;
    padding: var(--spacing-md);
  }
  
  .card-xlarge,
  .card-large,
  .card-wide,
  .card-tall {
    grid-column: span 1;
    grid-row: span 1;
  }
  
  .featured-image {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  :root {
    --font-base: 0.9rem;
    --font-lg: 1.1rem;
    --font-xl: 1.3rem;
    --font-2xl: 1.6rem;
  }
  
  .title {
    padding: var(--spacing-sm);
  }
  
  .cards-container {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }
  
  .card img {
    height: 150px;
  }
}

/* --- ANIMACIONES Y EFECTOS ESPECIALES --- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeIn var(--transition-slow) ease-out;
}

/* Efecto de carga progresiva */
.card:nth-child(1) { animation-delay: 0ms; }
.card:nth-child(2) { animation-delay: 50ms; }
.card:nth-child(3) { animation-delay: 100ms; }
.card:nth-child(4) { animation-delay: 150ms; }
.card:nth-child(5) { animation-delay: 200ms; }
.card:nth-child(6) { animation-delay: 250ms; }
.card:nth-child(7) { animation-delay: 300ms; }
.card:nth-child(8) { animation-delay: 350ms; }
.card:nth-child(9) { animation-delay: 400ms; }

/* Scroll suave */
html {
  scroll-behavior: smooth;
}

/* Mejora de rendimiento */
.card,
.btn,
.logo {
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-perspective: 1000;
  perspective: 1000;
}

/* --- UTILIDADES --- */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.p-md {
  padding: var(--spacing-md);
}

/* Modo oscuro (opcional - para futuras implementaciones) */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-main: #121212;
    --color-bg-card: #1e1e1e;
    --color-text-primary: #e8e8e8;
    --color-text-secondary: #b8b8b8;
    --color-border: #2a2a2a;
  }
  
  .featured-image {
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.2) 0%, rgba(121, 134, 203, 0.2) 100%);
  }
}