:root {
  --primary-dark: #003366;
  --primary-light: #0099cc;
  --grey-light: #f5f5f5;
  --text-dark: #333;
}

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

body {
  font-family: Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
}

header {
  position: fixed;
  width: 100%;
  background: #fff;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  z-index: 1000;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
}

.logo img {
  height: 40px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--primary-dark);
  font-weight: bold;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--primary-dark);
}

.section {
  padding: 100px 2rem 60px;
  background: var(--grey-light);
  text-align: center;
}

#nosotros {
  background: #fff;
}

.client-logos {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.client-logos img {
  max-width: 120px;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.client-logos img:hover {
  opacity: 1;
}

form {
  max-width: 500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

form input,
form textarea {
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

form button {
  padding: 0.75rem;
  border: none;
  background: var(--primary-light);
  color: #fff;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
}

form button:hover {
  background: var(--primary-dark);
}

footer {
  padding: 1rem 2rem;
  background: var(--primary-dark);
  color: #fff;
  text-align: center;
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    right: -100%;
    top: 60px;
    flex-direction: column;
    background: #fff;
    width: 200px;
    transition: right 0.3s;
    box-shadow: -2px 0 5px rgba(0,0,0,0.1);
  }
  .nav-links.active {
    right: 0;
  }
  .hamburger {
    display: flex;
  }
}