* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: url('fondo_opilam_triangulos.png') no-repeat center center fixed;
  background-size: cover;
  color: #fff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
  background-color: #132C4E;
  padding: 10px 30px;
  text-align: center;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
}

.logo-navbar {
  height: 40px;
  vertical-align: middle;
}

.navbar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar li {
  display: inline-block;
  margin: 0 15px;
}

.navbar a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  transition: color 0.3s;
  cursor: pointer;
}

.navbar a:hover {
  color: #00d9ff;
}

.section {
  display: none;
  padding: 100px 20px;
  max-width: 800px;
  margin: 100px auto 0 auto;
  text-align: center;
  opacity: 0;
}

.section.visible {
  display: block;
  opacity: 1;
}

.section.fade .animated-line {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeSlideIn 1.2s ease forwards;
}

.section.fade .animated-line:nth-child(1) {
  animation-delay: 0.2s;
}
.section.fade .animated-line:nth-child(2) {
  animation-delay: 0.5s;
}
.section.fade .animated-line:nth-child(3) {
  animation-delay: 0.8s;
}
.section.fade .animated-line:nth-child(4) {
  animation-delay: 1.1s;
}
.section.fade .animated-line:nth-child(5) {
  animation-delay: 1.4s;
}

@keyframes fadeSlideIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-section {
  padding-top: 1px;
}

.logo-hero {
  width: 400px;
}

.logo {
  font-size: 64px;
  font-weight: 700;
  letter-spacing: -2px;
  margin-top: 80px;
}

.tagline {
  font-size: 18px;
  letter-spacing: 3px;
  color: #ddd;
}