.seccion { display: none; }
    .seccion.activa { display: block; }
body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #fff8f0;
  color: #333;
}

header {
  background: linear-gradient(135deg, #ff0000, #0000ff);
  color: white;
  text-align: center;
  padding: 2rem 1rem;
}

nav {
  background: linear-gradient(90deg, #ff0000, #0000ff);
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 1rem;
}

footer {
  background: linear-gradient(135deg, #ff0000, #0000ff);
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

nav a {
  text-decoration: none;
  color: #d1ee13;
  font-weight: bold;
}

main {
  padding: 2rem;
}

h2 {
  color: #d6336c;
}

.galeria {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}

.producto {
  text-align: center;
  width: 150px;
}

.producto img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.producto p {
  margin-top: 8px;
  font-weight: bold;
  color: #6a0572;
}
button {
  margin-top: 1.5rem;
  padding: 0.8rem 1.5rem;
  background-color: #0d11e3;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

button:hover {
  background-color: #ff1493;
}

footer {
  background-color: #ffe4e1;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}
body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #fafafa;
  color: #333;
  transition: background 0.3s, color 0.3s;
}

header {
  text-align: center;
  background: linear-gradient(to right, #094267, #fe2b20);
  color: white;
  padding: 40px 10px;
  position: relative;
}

.logo {
  width: 200px;
  border-radius: 20px;
}

#modoOscuroBtn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: #888efe;
  color: white;
  border: none;
  padding: 8px 15px;
  border-radius: 8px;
  cursor: pointer;
}

#modoOscuroBtn:hover {
  background-color: #8a1299,#0942;
}

nav {
  background-color: #8820a8;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 10px 0;
}

nav a {
  color: white;
  text-decoration: none;
  margin: 8px 15px;
  font-weight: bold;
  transition: 0.3s;
}

nav a:hover {
  color: #ffd700;
}

main {
  padding: 20px;
  max-width: 900px;
  margin: auto;
}

h2 {
  color: #004080;
  border-bottom: 2px solid #004080;
  padding-bottom: 5px;
}

.foto {
  display: block;
  margin: 40px auto;
  width: 250px;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

ul {
  list-style-type: none;
  padding: 0;
}

ul li {
  background-color: #dff0ff;
  margin: 8px 0;
  padding: 10px;
  border-radius: 8px;
}

.proyectos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  margin-top: 15px;
}

.card {
  background-color: #f0f8ff;
  padding: 15px;
  border-radius: 12px;
  box-shadow: 0 3px 6px rgba(0,0,0,0.1);
  transition: 0.3s;
}

.card:hover {
  transform: scale(1.05);
  background-color: #e3f2fd;
}

button {
  background-color: #004080;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 15px;
}

button:hover {
  background-color: #0074e4;
}

.link-itpm {
  color: #004080;
  font-weight: bold;
  text-decoration: none;
}

.link-itpm:hover {
  color: #0074e4;
  text-decoration: underline;
}

footer {
  background-color: #004080;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 30px;
}


.dark-mode {
  background-color: #121212;
  color: #e0e0e0;
}

.dark-mode header {
  background: linear-gradient(to right, #0a3d62, #1e5f74);
}

.dark-mode nav {
  background-color: #0a3d62;
}

.dark-mode h2 {
  color: #66d9ef;
  border-color: #66d9ef;
}

.dark-mode .card {
  background-color: #1e1e1e;
  color: #f1f1f1;
}

.dark-mode ul li {
  background-color: #2a2a2a;
}

.dark-mode a {
  color: #80d4ff;
}