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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #f9f9f9;
  color: #333;
}

/* Header */
header {
  background: #e6e6e6;
  padding: 20px;
  position: sticky; /* Requisito: uso de position */
  top: 0;
}

.perfil {
  display: flex;
  align-items: center;
  gap: 20px;
}

.foto-perfil {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
}

.datos h1 {
  font-size: 1.8rem;
}

.datos h2 {
  font-size: 1.2rem;
  color: #555;
}

/* Layout principal */
main {
  display: flex;
  padding: 20px;
  gap: 20px;
}

/* Columna izquierda */
aside {
  flex: 1;
  background: #f0f0f0;
  padding: 15px;
  border-radius: 8px;
}

aside h3 {
  margin-bottom: 10px;
  font-size: 1rem;
  color: #222;
}

aside ul {
  list-style: square;
  padding-left: 20px;
  margin-bottom: 20px;
}

/* Contenido */
.contenido {
  flex: 3;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
}

.contenido h2 {
  margin-bottom: 15px;
}

.contenido h3 {
    padding-right: 50px;
}

.bloque {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
  gap: 15px;
}

.img-bloque {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border: 2px solid #ccc;
  border-radius: 5px;
}

/* Footer */
footer {
  background: #ffffff;
  color: #fff;
  text-align: center;
  padding: 15px;
  margin-top: 20px;
}

footer img {
  width: 100px;
  margin: 0 10px;
  vertical-align: middle;
}