* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  color: #ffffff;
  overflow-x: hidden;
}

header {
  background-color: rgba(0, 0, 0, 0.6);
  padding: 20px 40px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

header h1 {
  font-size: 3rem;
  animation: slideIn 1s ease-out;
}

nav {
  margin-top: 10px;
}

nav a {
  color: #00ffff;
  text-decoration: none;
  margin: 0 15px;
  font-weight: bold;
  transition: color 0.3s;
}

nav a:hover {
  color: #ff4081;
}

section {
  padding: 60px 20px;
  max-width: 900px;
  margin: auto;
  animation: fadeInUp 1.2s ease-out;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: #00ffff;
}

p {
  font-size: 1.2rem;
  line-height: 1.6;
}

.btn {
  display: inline-block;
  padding: 12px 25px;
  background-color: #00ffff;
  color: #000;
  font-weight: bold;
  border: none;
  border-radius: 8px;
  margin-top: 30px;
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s;
}

.btn:hover {
  transform: scale(1.1);
  background-color: #00bcd4;
}

footer {
  text-align: center;
  padding: 30px;
  background: rgba(255, 255, 255, 0.1);
  margin-top: 40px;
  font-size: 1rem;
}

.imagenes-celulares {
  display: flex;
  justify-content: center; 
  gap: 20px; 
  margin: 20px 0; 
}

.imagenes-celulares img {
  max-width: 100%; 
  height: auto;
  border-radius: 8px; 
  box-shadow: 0 2px 6px rgba(0,0,0,0.2); 
}


@keyframes slideIn {
  from { transform: translateY(-50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes fadeInUp {
  from { transform: translateY(50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}