* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  line-height: 1.6;
  background: #ffffff;
  color: #222;
}

.container {
  width: 90%;
  max-width: 1000px;
  margin: auto;
}

header {
  background: #fff;
  padding: 1em 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  font-size: 1.5em;
  font-weight: bold;
  color: #003366;
}

.logo-icon {
  color: #2ebd59;
  margin-right: 5px;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #003366;
}

nav .btn {
  padding: 0.5em 1em;
  background: #007bff;
  color: white;
  border-radius: 4px;
}

.hero {
  background: url('https://images.unsplash.com/photo-1523289333742-be1143f6b766') no-repeat center center/cover;
  color: white;
  text-align: center;
  padding: 100px 20px;
}

.hero h1 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

.btn-primary {
  padding: 0.75em 1.5em;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  text-decoration: none;
}

.about, .services, .contact {
  padding: 60px 20px;
  text-align: center;
}

.services .service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.service {
  background: #f5f5f5;
  padding: 20px;
  border-radius: 8px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 500px;
  margin: auto;
}

form input, form textarea {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

footer {
  text-align: center;
  background: #003366;
  color: white;
  padding: 20px 0;
  margin-top: 40px;
}

/* Animations simples */
.hidden {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s ease-in-out;
}

.visible {
  opacity: 1;
  transform: translateY(0);
}