body {
  margin: 0;
  font-family: "Courier New", monospace;
  background: radial-gradient(circle at top, #0a0f1f, #000);
  color: #00ffcc;
  overflow-x: hidden;
}

/* Efecto scanlines retro */
.scanlines {
  position: fixed;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.03),
    rgba(255,255,255,0.03) 1px,
    transparent 2px,
    transparent 4px
  );
  pointer-events: none;
}

header {
  text-align: center;
  padding: 60px 20px 20px;
}

h1 {
  font-size: 48px;
  text-shadow: 0 0 10px #00ffcc, 0 0 30px #00ffcc;
  letter-spacing: 4px;
}

.subtitle {
  color: #aaa;
  font-size: 14px;
}

nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 20px 0;
}

nav a {
  color: #00ffcc;
  text-decoration: none;
  border: 1px solid #00ffcc;
  padding: 8px 12px;
  transition: 0.3s;
}

nav a:hover {
  background: #00ffcc;
  color: #000;
  box-shadow: 0 0 15px #00ffcc;
}

main {
  max-width: 800px;
  margin: auto;
  padding: 20px;
}

.card {
  border: 1px solid #00ffcc;
  padding: 20px;
  margin-bottom: 20px;
  background: rgba(0, 255, 204, 0.05);
  box-shadow: 0 0 10px rgba(0,255,204,0.2);
}

.glow {
  box-shadow: 0 0 20px #00ffcc;
}

footer {
  text-align: center;
  padding: 40px;
  font-size: 12px;
  color: #555;
}
button {
  background: transparent;
  border: 1px solid #00ffcc;
  color: #00ffcc;
  padding: 8px 12px;
  cursor: pointer;
  margin-top: 10px;
  transition: 0.3s;
}

button:hover {
  background: #00ffcc;
  color: black;
  box-shadow: 0 0 10px #00ffcc;
}