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

/* Tipografía: Google Fonts 'Merriweather' para texto y 'Montserrat' para encabezados */
@import url('https://fonts.googleapis.com/css2?family=Merriweather&family=Montserrat:wght@600&display=swap');

/* Cuerpo */
body {
  font-family: 'Merriweather', serif;
  background-color: #f9fafb;
  color: #2c3e50;
  line-height: 1.8;
  padding: 25px;
}

/* Contenedor principal */
#contenedor {
  max-width: 760px;
  margin: 0 auto;
  padding: 30px 40px;
  background-color: #eaf3fb;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 2);
}

/* Encabezado */
header {
  text-align: center;
  margin-bottom: 40px;
}

header h1 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 2.5rem;
  color: #1a374d;
  margin-bottom: 18px;
}

/* Navegación */
nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap; 
  gap: 20px;
  padding: 0;
  margin: 0;

}



nav ul li a {
  text-decoration: none;
  color: #3a5068;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 6px;
  transition: background-color 0.35s ease, color 0.35s ease;
}

nav ul li a:hover,
nav ul li a:focus {
  background-color: #3a5068;
  color: #f9fafb;
  outline: none;
}

/* Artículo */
article p {
  margin-bottom: 24px;
  font-size: 1.15rem;
}

article h2 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  color: #406882;
  margin-top: 42px;
  margin-bottom: 20px;
  border-bottom: 3px solid #89a7b9;
  padding-bottom: 8px;
  font-size: 1.75rem;
}

/* Pie de página */
footer {
  text-align: center;
  margin-top: 50px;
  padding-top: 18px;
  font-size: 0.95rem;
  color: #7b8d93;
  border-top: 1px solid #dbe3e8;
}


@media screen and (max-width: 600px) {
  #contenedor {
    padding: 20px;
    margin: 15px;
  }

  header h1 {
    font-size: 1.8rem;
  }

  nav ul {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
   
  }

  article h2 {
    font-size: 1.4rem;
  }

  article p {
    font-size: 1.05rem;
  }
}