/* Colores actualizados: rojo (#c62828), negro (#121212), azul claro (#81d4fa), fondo suave */
body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: #1a1a1a;
  color: #e0e0e0;
}

header {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, #121212, #1f1f1f);
  border-bottom: 2px solid #c62828;
}

h1 {
  color: #c62828;
  margin: 0;
  font-size: 3em;
  text-shadow: 1px 1px 3px #000;
}

header p {
  color: #81d4fa;
  font-size: 1.2em;
  margin-top: 5px;
}

main {
  padding: 30px 20px;
  max-width: 960px;
  margin: auto;
  background-color: #1f1f1f;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.4);
}

h2 {
  color: #c62828;
  margin-top: 40px;
  border-bottom: 2px solid #81d4fa;
  padding-bottom: 5px;
}

p, li {
  line-height: 1.6;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}

.card {
  background: linear-gradient(135deg, #2a2a2a, #1f1f1f);
  border: 1px solid #333;
  padding: 20px;
  border-radius: 10px;
  flex: 1 1 250px;
  transition: transform 0.2s ease, border-color 0.2s;
}

.card:hover {
  transform: scale(1.05);
  border-color: #c62828;
}

ul {
  padding-left: 20px;
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  background-color: #121212;
  color: #999;
  border-top: 1px solid #333;
}

.avatar {
  width: 120px;
  border-radius: 50%;
  margin-top: 20px;
  border: 3px solid #81d4fa;
  display: block;
  box-shadow: 0 0 8px #81d4fa;
  margin-left: auto;
  margin-right: auto;
}

.contacto strong {
  color: #81d4fa;
  font-size: 1.1em;
}