/* Skeleton loaders for images & videos.
   Two mechanisms, driven by media-skeleton.js:
   - Wrapper (.media-skeleton) for fluid content media (figures, bare images,
     feature-widget images) — reserves a 16:9 box while loading.
   - Host box (.ms-box) for media that fills a fixed/positioned container
     (project-card thumbnails, project hero) where wrapping would break
     object-fit / absolute layout. */

:root {
  --ms-base: #16233b;  /* slate, between --color-dark and --color-darker */
  --ms-sheen: #24405f; /* lighter slate with a hint of the cyan accent */
}

@keyframes ms-slide {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- Wrapper mechanism (fluid media) ---------- */
.media-skeleton {
  position: relative;
  display: block;
}

.media-skeleton.ms-loading {
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background: var(--ms-base);
}

.media-skeleton.ms-loading::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    var(--ms-base) 30%,
    var(--ms-sheen) 50%,
    var(--ms-base) 70%
  );
  background-size: 200% 100%;
  animation: ms-slide 1.4s ease-in-out infinite;
}

.media-skeleton > img,
.media-skeleton > video {
  display: block;
  width: 100%;
  height: auto;
}

.media-skeleton.ms-loading > img,
.media-skeleton.ms-loading > video {
  opacity: 0;
}

.media-skeleton.ms-done > img,
.media-skeleton.ms-done > video {
  opacity: 1;
  transition: opacity 0.4s ease;
}

/* ---------- Host-box mechanism (media fills a sized container) ---------- */
.ms-box.ms-loading::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(
    100deg,
    var(--ms-base) 30%,
    var(--ms-sheen) 50%,
    var(--ms-base) 70%
  );
  background-size: 200% 100%;
  animation: ms-slide 1.4s ease-in-out infinite;
}

.ms-box.ms-loading > img,
.ms-box.ms-loading > video {
  opacity: 0;
}

.ms-box > img,
.ms-box > video {
  transition: opacity 0.4s ease;
}

/* Respect reduced-motion: keep the tint, drop the sweep. */
@media (prefers-reduced-motion: reduce) {
  .media-skeleton.ms-loading::before,
  .ms-box.ms-loading::before {
    animation: none;
  }
}