body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #f5f5f5;
  color: #333;
}

nav {
  background: #0d47a1;
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.logo-area {
  display: flex;
  align-items: center;
  gap: 15px;
}
.logo {
  height: 80px;
  width: auto;
}
.brand {
  font-size: 2.2rem;
  font-weight: bold;
  color: white;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: white;
  text-decoration: none;
  font-size: 1.2rem;
  padding: 10px 18px;
  transition: background 0.3s;
}
.nav-links a:hover,
.nav-links a.active {
  background: white;
  color: #0d47a1;
  border-radius: 5px;
}
.hero {
  text-align: center;
  padding: 5rem 2rem;
}
.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.3rem;
  max-width: 700px;
  margin: 0 auto 1rem;
}
.proyectos {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  padding: 2rem;
}
.card {
  background: white;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.card img {
  width: 100%;
  border-radius: 6px;
}
footer {
  background: #222;
  color: #ccc;
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 3rem;
}