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

body {
  min-height: 100dvh;
  margin: 0;
  background: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.logo {
  max-width: 320px;
  width: 90vw;
  height: auto;
  border-radius: 20px;
  /* box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3); */
  /* transition: transform 0.3s ease, filter 0.3s ease; */
  filter: contrast(1.1) brightness(1.05) saturate(1.1);
}

.logo:hover {
  transform: scale(1.03);
  filter: contrast(1.15) brightness(1.1) saturate(1.15);
}

@media (min-width: 480px) {
  .logo {
    max-width: 400px;
  }
}

/* Mobile-first: fondo cubre toda la pantalla */
@media (min-width: 420px) {
  body {
    background: url("../img/background.jpg");
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
  }

  .logo {
    display: none;
  }
}

@media (min-width: 768px) {
  .logo {
    max-width: 500px;
  }
}