/* Header */
header {
  margin: 20px;
  background: #3498db; /* Azul intenso */
  border-radius: 10px;
  color: #fff;
  font: 20px/28px "Arial", sans-serif;
  padding: 30px 20px;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

/* Footer, Section, Article y Aside */
footer, section, article, aside {
  margin: 20px;
  background: #3498db; /* Azul intenso */
  border-radius: 10px;
  color: #333;
  font: 18px/26px "Arial", sans-serif;
  padding: 30px 20px;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

#miimg {
  float: right;
  margin-left: 20px;
}

#curva_chart {
  float: left;
  margin-left: 20px;
}

/* Navigation */
nav {
  background-color: #27ae60; /* Verde esmeralda más oscuro */
  border: 1px solid #219653; /* Verde esmeralda */
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  color: #fff;
  display: block;
  margin: 20px 0;
  overflow: hidden;
  width: 90%;
}

nav ul {
  margin: 0;
  padding: 0;
}

nav ul li {
  display: inline-block;
  list-style-type: none;
  transition: all 0.2s;
}

nav > ul > li > a > .caret {
  border-top: 4px solid #fff;
}

nav > ul > li > a {
  color: #fff;
  display: block;
  line-height: 56px;
  padding: 0 24px;
  text-decoration: none;
}

nav > ul > li:hover {
  background-color: #219653; /* Verde esmeralda más intenso */
}

nav > ul > li:hover > a {
  color: #fff;
}

nav > ul > li:hover > a > .caret {
  border-top-color: #fff;
}

nav > ul > li > div {
  background-color: #219653; /* Verde esmeralda más intenso */
  border-top: 0;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.1);
}

nav > ul > li:hover > div {
  display: block;
}

nav > ul > li > div ul > li > a {
  color: #fff;
}

nav > ul > li > div ul > li:hover > a {
  background-color: rgba(255, 255, 255, 0.1);
}