body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: #0d0d0d;
  color: white;
}

header {
  position: relative;
  width: 100%;
  aspect-ratio: 5 / 1;
  background: url('images/channels4_banner.jpg') no-repeat center center;
  background-size: cover;
  background-color: #000;
  overflow: hidden;
}

/* Eliminado header::after y h1 porque ya no se usa texto encima */

nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
  background: #1c1c1c;
  justify-content: center;
}

nav li {
  margin: 0;
}

nav a {
  display: block;
  padding: 1rem;
  color: white;
  text-decoration: none;
}

nav a:hover {
  background-color: #ff9900;
}

section {
  padding: 2rem;
}

.video-gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.video-gallery iframe {
  width: 100%;
  max-width: 400px;
  height: 225px;
  border: none;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #111;
  color: #aaa;
}

@media (max-width: 600px) {
  .video-gallery iframe {
    height: 200px;
  }
}