body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #000000, #0a3d62); /* negro → azul profundo */
  color: #f0f0f0;
}

.card {
  border-radius: 12px;
  background-color: #0a3d62; /* azul oscuro */
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(0,0,0,0.6);
}

.navbar {
  background: linear-gradient(90deg, #000000, #1e90ff); /* negro → azul brillante */
}

.btn-primary {
  background-color: #1e90ff;
  border: none;
}
.btn-primary:hover {
  background-color: #0a74d6;
}

.btn-danger {
  background-color: #000000;
  border: 1px solid #1e90ff;
  color: #1e90ff;
}
.btn-danger:hover {
  background-color: #1e90ff;
  color: #000000;
}

.table-dark {
  background-color: #000000;
}
.table-dark th, .table-dark td {
  color: #1e90ff;
}

/* Encabezados destacados */
h1, h2, h3, h4, h5, h6 {
  color: #1e90ff !important;   /* azul eléctrico */
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

/* Línea decorativa debajo de los títulos */
h2::after, h3::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background-color: #1e90ff;
  margin-top: 8px;
  border-radius: 2px;
}

/* Párrafos destacados */
p {
  color: #f0f8ff !important;   /* azul claro para contraste */
  font-size: 1.1rem;
  line-height: 1.6;
}

.alert {
  transition: opacity 0.5s ease-out;
}

.overlay-nombre {
  opacity: 0;
  transition: opacity 0.3s ease;
}
.grupo-img:hover + .overlay-nombre,
.position-relative:hover .overlay-nombre {
  opacity: 1;
}

.compact-table td, 
.compact-table th {
  padding: 0.25rem 0.4rem; /* menos espacio interno */
  font-size: 0.75rem;      /* letra más pequeña */
}