/* ESTILOS GENERALES */
body {
  background-color: #f8f9fa;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  scroll-behavior: smooth;
}

/* NAVBAR FIJA */
.navbar {
  transition: background-color 0.3s ease;
}
.navbar-brand {
  font-size: 1.5rem;
}
.navbar-nav .nav-link {
  font-size: 1.1rem;
  margin-right: 15px;
  transition: color 0.2s ease-in-out;
}
.navbar-nav .nav-link:hover {
  color: #d1e7dd;
}

/* ENCABEZADO CON IMAGEN LOCAL */
header {
  background-image: url('img/header.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  height: 360px;
  color: white;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.6);
  padding: 200px 0;
  text-align: center;
  border-bottom: 5px solid #198754;
}
header h1 {
  font-size: 3rem;
  font-weight: bold;
}
header p {
  font-size: 1.3rem;
}

/* SIDEBAR */
.sidebar {
  background-color: #ffffff;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.sidebar h4 {
  color: #198754;
  border-bottom: 2px solid #198754;
  padding-bottom: 5px;
  margin-bottom: 15px;
}
.sidebar a {
  color: #333;
  text-decoration: none;
}
.sidebar a:hover {
  color: #198754;
  text-decoration: underline;
}

/* ARTÍCULOS */
.card img {
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
.card {
  border-radius: 10px;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
}

/* PIE DE PÁGINA */
footer {
  background-color: #003f5c;
  color: white;
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
}