:root {
  /* Paleta de colores principal vibrante */
  --color-primary: #0284c7; /* Azul oceánico profundo */
  --color-primary-hover: #0369a1;
  --color-secondary: #10b981; /* Verde esmeralda */
  --color-secondary-hover: #059669;
  --color-accent: #f59e0b; /* Naranja ámbar para llamadas a la acción */
  
  /* Tonos neutros */
  --color-dark: #1e293b;
  --color-light: #f8fafc;
  --color-text: #334155;
  --color-text-muted: #64748b;
  
  /* Tipografías modernas */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Otras variables */
  --border-radius-lg: 12px;
  --border-radius-md: 8px;
  --box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --box-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Configuraciones Globales */
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-light);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-dark);
}

main {
  flex: 1; /* Permite que el footer baje si hay poco contenido */
}

/* Componentes Personalizados (Bootstrap Overrides) */
.navbar {
  background-color: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.navbar-brand {
  color: var(--color-primary) !important;
  font-size: 1.5rem;
  font-weight: 800;
}

.nav-link {
  font-weight: 500;
  color: var(--color-text) !important;
  transition: color 0.3s ease;
}

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

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  padding: 0.5rem 1.5rem;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--box-shadow);
}

.btn-secondary {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  font-weight: 600;
}

.btn-secondary:hover {
  background-color: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
}

/* Hero Section */
.hero {
  position: relative;
  background-size: cover;
  background-position: center;
  min-height: 80vh;
  display: flex;
  align-items: center;
  color: white;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to right, rgba(30, 41, 59, 0.8), rgba(30, 41, 59, 0.3));
}

.hero-content {
  position: relative;
  z-index: 10;
}

.hero h1 {
  color: white;
  font-size: 3.5rem;
  font-weight: 800;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
  font-size: 1.25rem;
  color: #f8fafc;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.4);
}

/* Cards */
.card {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--box-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  height: 100%;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow-hover);
}

.card-img-top {
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

/* Footer */
footer {
  background-color: var(--color-dark);
  color: #f1f5f9;
  padding: 3rem 0;
  margin-top: auto;
}

footer a {
  color: #fbbf24;
  text-decoration: none;
  transition: color 0.3s;
}

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

/* Utilidades para páginas internas */
.page-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  padding: 4rem 0 2rem;
  margin-bottom: 3rem;
  text-align: center;
}

.page-header h1 {
  color: white;
}

/* Galería CSS Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.gallery-item {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  color: white;
  padding: 1.5rem 1rem 1rem;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.gallery-item:hover figcaption {
  transform: translateY(0);
}

/* Tabla Personalizada */
.custom-table {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}
.custom-table thead {
  background-color: var(--color-primary);
  color: white;
}
.custom-table tfoot {
  background-color: #e2e8f0;
  font-weight: bold;
}