/* Full background */
body {
  min-height: 100vh;
  margin: 0;
  background: url("../img/main-bg.jpg") no-repeat center center fixed;
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Overlay para legibilidad */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: -1;
}

#wrapper,
main {
  color: #fff;
}