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

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  color: #333;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background-color: #007bff;
  color: white;
  padding: 20px;
  text-align: center;
}

nav {
  display: flex;
  justify-content: center;
  background-color: #0056b3;
  flex-wrap: wrap;
}

nav a {
  color: white;
  padding: 15px 25px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

nav a:hover {
  background-color: #003f7f;
}

main {
  flex-grow: 1;
  padding: 30px;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

section.intro {
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

footer {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 15px;
  font-size: 14px;
  position: sticky;
  bottom: 0;
  width: 100%;
}

/* Estilos gerais para botões, inputs e outros elementos podem ser adicionados depois */
.button-container {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(120px,1fr));
  gap: 15px;
  max-width: 900px;
  margin: 20px auto;
}

.btn {
  display: block;
  padding: 15px;
  background-color: #007bff;
  color: white;
  text-decoration: none;
  font-weight: bold;
  border-radius: 8px;
  text-align: center;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: #0056b3;
}