/* Skeleton Loading Animation */
@keyframes skeleton-loading {
  0% {
    background-color: hsl(200, 20%, 80%);
  }

  100% {
    background-color: hsl(200, 20%, 95%);
  }
}

.skeleton {
  opacity: 0.7;
  animation: skeleton-loading 1s linear infinite alternate;
  pointer-events: none;
  /* Prevent clicks while loading */
}

/* Skeleton for specific elements */
.skeleton-text {
  width: 100%;
  height: 1rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
}

.skeleton-text-short {
  width: 50%;
  height: 1rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
}

.skeleton-title {
  width: 75%;
  height: 1.5rem;
  margin-bottom: 1rem;
  border-radius: 4px;
}

.skeleton-button {
  width: 100px;
  height: 2.5rem;
  border-radius: 4px;
}

.skeleton-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
}

.skeleton-card {
  width: 100%;
  height: 200px;
  border-radius: 8px;
}

/* DataTables Skeleton wrapper */
.skeleton-table {
  width: 100%;
  height: 300px;
  border-radius: 8px;
}

/* Dark mode support (if applicable) */
[data-theme="dark"] .skeleton,
.dark-theme .skeleton,
body.dark .skeleton {
  animation-name: skeleton-loading-dark;
}

@keyframes skeleton-loading-dark {
  0% {
    background-color: hsl(200, 20%, 20%);
  }

  100% {
    background-color: hsl(200, 20%, 30%);
  }
}

/* Global Page Skeleton Loader */
#global-page-skeleton {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--body-bg, #f4f6f9);
  z-index: 999999;
  display: flex;
  flex-direction: column;
  transition: opacity 0.4s ease-out, visibility 0.4s ease-out;
}

[data-theme="dark"] #global-page-skeleton,
.dark-theme #global-page-skeleton,
body.dark #global-page-skeleton {
  background-color: #1e1e2d;
}

#global-page-skeleton.hidden {
  opacity: 0;
  visibility: hidden;
}

#admin-content-skeleton, #opac-content-skeleton {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--body-bg, #f4f6f9);
  z-index: 999;
  display: flex;
  flex-direction: column;
  transition: opacity 0.4s ease-out, visibility 0.4s ease-out;
  padding: 30px;
}

[data-theme="dark"] #admin-content-skeleton,
.dark-theme #admin-content-skeleton,
body.dark #admin-content-skeleton,
[data-theme="dark"] #opac-content-skeleton,
.dark-theme #opac-content-skeleton,
body.dark #opac-content-skeleton {
  background-color: #1e1e2d;
}

#admin-content-skeleton.hidden,
#opac-content-skeleton.hidden {
  opacity: 0;
  visibility: hidden;
}

/* Skeleton Layout Structure */
.skeleton-topbar {
  height: 60px;
  width: 100%;
  background-color: hsl(200, 20%, 90%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  padding: 0 20px;
  animation: skeleton-loading 1s linear infinite alternate;
}

.skeleton-body-wrapper {
  display: flex;
  flex: 1;
  height: calc(100vh - 60px);
}

.skeleton-sidebar {
  width: 250px;
  height: 100%;
  background-color: hsl(200, 20%, 95%);
  border-right: 1px solid rgba(0, 0, 0, 0.05);
  padding: 20px;
  animation: skeleton-loading 1s linear infinite alternate;
}

.skeleton-content-area {
  flex: 1;
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.skeleton-box {
  background-color: hsl(200, 20%, 90%);
  border-radius: 8px;
  animation: skeleton-loading 1s linear infinite alternate;
}

[data-theme="dark"] .skeleton-topbar,
[data-theme="dark"] .skeleton-sidebar,
[data-theme="dark"] .skeleton-box {
  animation-name: skeleton-loading-dark;
  border-color: rgba(255, 255, 255, 0.05);
}

/* Specific elements for visual fidelity */
.sk-header-logo {
  width: 150px;
  height: 30px;
  border-radius: 4px;
}

.sk-nav-item {
  width: 100%;
  height: 40px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.sk-content-header {
  width: 30%;
  height: 40px;
  border-radius: 6px;
}

.sk-content-card {
  width: 100%;
  height: 300px;
  border-radius: 12px;
}

/* Hide scrollbar while loading */
body.is-loading {
  overflow: hidden !important;
}
.main-content { position: relative; }
.sk-content-row { display: flex; gap: 20px; margin-top: 20px; }
.sk-content-row > .sk-content-card { flex: 1; }