/* Reset básico */
body,
html {
  margin: 0;
  padding: 0;
  height: 100%;
}

/* Barra de navegação fixa */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  /* altura definida */
  background-color: rgba(255, 255, 255, 1);
  display: flex;
  justify-content: center;
  /* centraliza horizontalmente */
  align-items: center;
  /* centraliza verticalmente */
  gap: 40px;
  padding: 0 20px;
  /* apenas padding lateral */
  z-index: 1000;
}

/* Estilo base dos botões */
.btn {
  border: 2px solid;
  padding: 15px 15px;
  font-size: 20px;
  border-radius: 6px;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

/* Botão azul */
.btn-blue {
  background-color: blue;
  border-color: blue;
  color: white;
}

.btn-blue:hover {
  background-color: darkblue;
  transform: scale(1.05);
}

/* Botão amarelo */
.btn-yellow {
  background-color: yellow;
  border-color: yellow;
  color: black;
}

.btn-yellow:hover {
  background-color: gold;
  transform: scale(1.05);
}

/* Fundo principal */
.background {
  background-image: url('../img/zeley.png');
  background-size:cover;
  background-repeat: no-repeat;
  background-position: top center;
background-attachment: fixed;
  height: 100%;
  margin-top: 70px;
}