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

html, body {
  height: 100%;
}

/* Tło JPG */
.bg {
  position: fixed;
  inset: 0;
  background-image: url('bg-mobile.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
}

/* Desktop tło */
@media (min-width: 768px) {
  .bg {
    background-image: url('bg-desktop.jpg');
  }
}

/* Wycentrowanie */
.center {
  position: relative;
  z-index: 1;
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

/* Logo */
.logo {
  width: min(70vw, 360px);
  height: auto;
  margin-bottom: 20px;
}

/* Podpis */
.signature {
  font-family: 'Archivo', sans-serif;
  font-weight: 400;
  font-size: clamp(16px, 2vw, 22px);
  color: #000;
  letter-spacing: 2px;
}