body {
  margin: 0;
  font-family: 'Cinzel Decorative', serif;
  background: url('fondo.jpg') no-repeat center center fixed;
  background-size: cover;
  color: #f4f4f4;
}

header {
  text-align: center;
  padding: 20px;
  background-color: rgba(0, 0, 0, 0.8);
}

.logo-main {
  width: 80%;
  max-width: 800px;
  height: auto;
  display: block;
  margin: 0 auto 10px auto;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
}

nav a {
  color: #ffd700;
  text-decoration: none;
  font-weight: bold;
}

section {
  padding: 40px;
  background-color: rgba(0, 0, 0, 0.7);
  margin: 20px;
  border: 2px solid #a52a2a;
  border-radius: 10px;
}

video {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 10px;
}

.video-tutorial {
  margin-top: 20px;
  border-radius: 10px;
  overflow: hidden;
}

iframe {
  border-radius: 10px;
  margin-top: 10px;
}

#countdown {
  text-align: center;
  font-size: 1.2em;
  font-weight: bold;
}

footer {
  text-align: center;
  padding: 20px;
  background-color: #111;
  position: relative;
  color: #ccc;
  overflow: hidden;
}

.footer-visual {
  position: relative;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
}

.logo-footer {
  width: 100%;
  display: block;
  position: relative;
  z-index: 1;
}

#matrixCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  mix-blend-mode: screen;
}