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

body, html {
  height: 100%;
  font-family: serif;
  background: black;
  overflow: hidden;
}

#bg-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -1; /* Behind all content */
  display: block;
}

.content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  text-align: center;
  font-size: 2.5rem;
  line-height: 3.5rem;
  z-index: 1; /* On top of video */
}

.socials {
  position: fixed;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 30px;
  z-index: 20; /* above overlay */
  
  opacity: 0;              /* initially hidden */
  pointer-events: none;    /* no clicks */
  transition: opacity 0.6s ease;
}

.socials.visible {
  opacity: 1;              /* visible */
  pointer-events: auto;    /* allow clicks */
}