/* Reset */
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
}

body {
  background-color: black;
}

/* Background image */
.background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -1;
}

.desktop-img {
  display: block;
}

.mobile-img {
  display: none;
}

@media (max-width: 768px) {
  .desktop-img { display: none; }
  .mobile-img { display: block; }
}

/* Loading overlay */
#loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: none;
}

/* Initial state: fullscreen image with optional pulse */
.loading-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  will-change: opacity, transform;
  transition: none;
}

/* Smooth fade-out with radial mask */
.fade-out {
  animation: fadeOutRadial 2s ease-in-out forwards;
}

/* Radial fade-out effect */
@keyframes fadeOutRadial {
  0% {
    opacity: 1;
    mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 1) 100%);
  }
  100% {
    opacity: 0;
    mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0) 100%);
  }
}