/* Estilo general y estructura centrada */
html, body {
  height: 100%;
  margin: 0;
  font-family: 'Orbitron', sans-serif;
  background: black;
  color: #00ffee;
  display: flex;
  flex-direction: column;
}

/* Efecto de escaneo digital */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(0,255,255,0) 0%, rgba(0,255,255,0.1) 50%, rgba(0,255,255,0) 100%);
  animation: scan 3s linear infinite;
  z-index: 1;
}

@keyframes scan {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100%); }
}

header {
  background-color: #111;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  z-index: 2;
}

.logo {
  font-size: 24px;
  color: red;
  text-shadow: 0 0 10px red;
}

#nav-menu ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

#nav-menu ul li a {
  color: red;
  text-decoration: none;
  font-weight: bold;
}
a {
  color: red;
  text-decoration: none;
}
a:hover {
  color: #00ffee;
}
#hamburger {
  display: none;
  font-size: 28px;
  color: red;
  cursor: pointer;
}

/* Responsive */
@media screen and (max-width: 768px) {
  #nav-menu ul {
    flex-direction: column;
    display: none;
    background-color: #111;
    padding: 10px;
  }

  #nav-menu.active ul {
    display: flex;
  }

  #hamburger {
    display: block;
  }
}

/* Main centrado */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  z-index: 2;
}

/* Secciones con ancho controlado */
section {
  width: 100%;
  max-width: 800px;
  margin: 20px auto;
}

/* Banner imágenes */
.banner-container img {
  width: 100%;
  max-width: 600px;
  margin: 20px auto;
  display: block;
  border: 2px solid #00ffee;
  box-shadow: 0 0 20px #00ffee;
  z-index: 2;
}

/* Footer fijo */
footer {
  background-color: #111;
  color: #00ffee;
  text-align: center;
  padding: 10px 0;
  font-size: 14px;
  z-index: 2;
}