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

html, body {
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
}

/* FULLSCREEN BACKGROUND IMAGE */
.background {
  position: fixed;
  inset: 0;
  background-image: url("images/Dark_Observation_bg.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 1;
}

/* SOCIAL ICONS */
.socials {
  position: fixed;
  bottom: 90px; /* space above copyright */
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 26px;
  z-index: 2;
}

.socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  opacity: 0.75;
  transition: opacity 0.2s ease;
}

.socials a:hover {
  opacity: 0.4;
}

.social-icon {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* COPYRIGHT — 2 LINES */
.copyright {
  position: fixed;
  bottom: 18px;
  width: 100%;
  padding: 0 32px;
  text-align: center;
  z-index: 2;
}

.copyright p {
  font-size: 0.85rem;
  line-height: 1.5;
  color: rgba(255,255,255,0.6);
  margin: 4px 0;
}

/* DESKTOP BOOST */
@media (min-width: 768px) {
  .socials a {
    width: 30px;
    height: 30px;
  }

  .copyright p {
    font-size: 0.95rem;
  }
}