/* ============================================================
   The Bible API - Page Loading Skeleton
   Modern layout-based shimmer placeholders that mirror the
   real DOM structure of each page for minimal layout shift.
   Supports light/dark themes, respects reduced motion,
   fades out smoothly once the page is ready.
   ============================================================ */

/* Skeleton-specific tokens that derive from the global theme. */
:root {
  --skeleton-base: #ece4d2;
  --skeleton-highlight: #f7f1e3;
  --skeleton-border: #e4dcc8;
  --skeleton-fade-duration: 320ms;
}

[data-theme="dark"] {
  --skeleton-base: #2a241c;
  --skeleton-highlight: #3a3226;
  --skeleton-border: #3a3226;
}

/* Fixed full-viewport overlay to avoid layout shift. */
.page-skeleton {
  position: fixed;
  inset: 0;
  z-index: 90; /* Below modals (1000) and sticky header content, above page */
  background: var(--color-bg);
  overflow: hidden;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  transition:
    opacity 340ms ease-out,
    transform 340ms ease-out;
}

.page-skeleton[hidden] {
  display: none !important;
}

.page-skeleton.is-hiding {
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

.page-skeleton .sk-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --------- Navbar placeholder --------- */
.sk-navbar {
  height: var(--header-height, 72px);
  border-bottom: 1px solid var(--skeleton-border);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  display: flex;
  align-items: center;
}

.sk-navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.sk-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.sk-nav-links {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

/* --------- Main content blocks --------- */
/* Match real pages: padding-top uses the same var(--page-top-offset)
   so skeleton and real content align vertically with zero jump. */
.sk-main {
  padding-top: var(--page-top-offset);
  padding-bottom: clamp(4rem, 8vw, 6rem);
}

/* Default header block: LEFT-aligned to match real page headers
   on docs, playground, snippets, status, accessibility, licensing. */
.sk-header {
  text-align: left;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  padding-top: clamp(1rem, 2vw, 1.5rem);
}

.sk-header .sk-line {
  margin-left: 0;
  margin-right: 0;
}

/* Opt-in centered variant for pages whose real header is centered
   (e.g., contact). Apply class="sk-header sk-header-center" where needed. */
.sk-header.sk-header-center {
  text-align: center;
}
.sk-header.sk-header-center .sk-line {
  margin-left: auto;
  margin-right: auto;
}

/* Back-compat: keep the existing sk-header-left class behaving as left. */
.sk-header.sk-header-left {
  text-align: left;
}
.sk-header.sk-header-left .sk-line {
  margin-left: 0;
  margin-right: 0;
}

.sk-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.sk-card {
  padding: 1.5rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sk-rows {
  display: grid;
  gap: 0.75rem;
}

.sk-row {
  padding: 1rem 1.25rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius, 10px);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sk-row .sk-line {
  flex: 1;
}

/* Two-panel layout (used by playground skeleton) */
.sk-two-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 1.25rem;
}

.sk-panel {
  padding: 1.5rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  min-height: 280px;
}

/* Sidebar + content layout (used by docs skeleton) */
.sk-docs-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 2rem;
}

.sk-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius, 10px);
  height: fit-content;
  position: sticky;
  top: 1rem;
}

.sk-sidebar .sk-sidebar-title {
  height: 1.1rem;
  width: 70%;
  margin-bottom: 0.5rem;
}

.sk-article {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
}

/* --------- Shimmer primitives --------- */
.sk-line,
.sk-circle,
.sk-block,
.sk-pill {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--skeleton-base);
  border-radius: 6px;
}

.sk-line {
  height: 0.85rem;
  width: 100%;
}

.sk-line.sk-lg {
  height: 1.75rem;
}

.sk-line.sk-xl {
  height: 2.5rem;
}

.sk-line.sk-sm {
  height: 0.65rem;
}

.sk-line.sk-w-20 {
  width: 20%;
}
.sk-line.sk-w-30 {
  width: 30%;
}
.sk-line.sk-w-40 {
  width: 40%;
}
.sk-line.sk-w-50 {
  width: 50%;
}
.sk-line.sk-w-60 {
  width: 60%;
}
.sk-line.sk-w-70 {
  width: 70%;
}
.sk-line.sk-w-80 {
  width: 80%;
}
.sk-line.sk-w-90 {
  width: 90%;
}

.sk-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.sk-block {
  width: 100%;
  border-radius: var(--radius, 10px);
}

.sk-block.sk-h-sm {
  height: 2.5rem;
}
.sk-block.sk-h-md {
  height: 4rem;
}
.sk-block.sk-h-lg {
  height: 8rem;
}
.sk-block.sk-h-xl {
  height: 14rem;
}

.sk-pill {
  height: 2rem;
  width: 5rem;
  border-radius: 999px;
}

/* Shimmer animation */
.sk-line::after,
.sk-circle::after,
.sk-block::after,
.sk-pill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

@keyframes sk-shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* --------- Body loaded state --------- */
/* Real content starts slightly transparent and fades in
   when the skeleton is dismissed, creating a seamless handoff. */
body:not(.is-loaded) .site-header,
body:not(.is-loaded) main,
body:not(.is-loaded) .site-footer {
  opacity: 0;
}

body.is-loaded .site-header,
body.is-loaded main,
body.is-loaded .site-footer {
  opacity: 1;
  transition: opacity 340ms ease-out;
}

/* ============================================================
   Page-specific skeleton structures
   Each block below mirrors the real page layout 1:1 so the
   transition into the final rendered UI feels natural.
   ============================================================ */

/* --------- Home (index.html) --------- */
.sk-hero {
  padding: clamp(3rem, 7vw, 5rem) 0 2.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}

.sk-hero .sk-pill {
  margin-bottom: 0.5rem;
}

.sk-hero .sk-line.sk-title {
  height: 3rem;
  width: 60%;
  max-width: 640px;
}

.sk-hero .sk-lead-line {
  max-width: 720px;
}

.sk-hero-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 0.75rem;
}

.sk-hero-actions .sk-pill {
  width: 10rem;
  height: 2.75rem;
}

.sk-code-window {
  margin: 2rem auto 0;
  max-width: 820px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
}

.sk-code-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--skeleton-border);
  background: color-mix(in srgb, var(--color-bg) 70%, transparent);
}

.sk-code-bar .sk-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
}

.sk-code-bar .sk-dot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

.sk-code-bar .sk-line {
  margin-left: 0.5rem;
  width: 80px;
  height: 0.7rem;
}

.sk-code-bar .sk-pill {
  margin-left: auto;
  width: 3.5rem;
  height: 1.5rem;
}

.sk-code-body {
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.sk-features-head {
  text-align: center;
  margin: 3rem 0 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  align-items: center;
}

.sk-features-head .sk-line {
  margin-left: 0;
  margin-right: 0;
}

/* --------- Docs sidebar links --------- */
.sk-sidebar-link {
  height: 0.8rem;
  width: 85%;
  border-radius: 4px;
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
}
.sk-sidebar-link:nth-child(2n) {
  width: 70%;
}
.sk-sidebar-link:nth-child(3n) {
  width: 92%;
}
.sk-sidebar-link::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

/* --------- Playground --------- */
.sk-utility-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius, 10px);
  margin-bottom: 1rem;
}

.sk-utility-bar .sk-line:first-child {
  width: 80px;
  flex: 0 0 auto;
}

.sk-utility-bar .sk-endpoint {
  flex: 1;
  height: 1.1rem;
}

.sk-utility-bar .sk-pill {
  width: 4.5rem;
  height: 1.9rem;
  flex: 0 0 auto;
}

.sk-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  align-items: center;
}

.sk-presets .sk-line:first-child {
  width: 70px;
  flex: 0 0 auto;
  height: 0.8rem;
}

.sk-presets .sk-pill {
  width: 9rem;
  height: 2rem;
}

.sk-pg-panel {
  padding: 1.5rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 420px;
}

.sk-pg-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--skeleton-border);
}

.sk-pg-panel-head .sk-line {
  width: 40%;
  height: 1.25rem;
}

.sk-pg-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sk-pg-field .sk-label {
  height: 0.75rem;
  width: 30%;
}

.sk-pg-field .sk-input {
  height: 2.5rem;
  width: 100%;
  border-radius: var(--radius, 10px);
}

.sk-pg-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.sk-pg-run-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.sk-pg-run-row .sk-pill {
  width: 10rem;
  height: 2.75rem;
}

.sk-pg-response {
  flex: 1;
  height: 18rem;
  border-radius: var(--radius, 10px);
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
}

.sk-pg-response::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

/* --------- Snippets grid --------- */
.sk-snippets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.sk-snippet-card {
  padding: 1.5rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sk-snippet-card .sk-tag {
  width: 3.5rem;
  height: 1.25rem;
  border-radius: 4px;
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
}

.sk-snippet-card .sk-tag::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

.sk-snippet-card .sk-code-block {
  width: 100%;
  height: 7rem;
  border-radius: var(--radius, 10px);
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
  margin-top: 0.25rem;
}

.sk-snippet-card .sk-code-block::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

.sk-snippet-card .sk-btn-placeholder {
  width: 7rem;
  height: 2.2rem;
  border-radius: 999px;
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
  margin-top: 0.25rem;
}

.sk-snippet-card .sk-btn-placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

/* --------- Status page --------- */
.sk-status-summary {
  padding: 1.75rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.sk-status-indicator {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--skeleton-base);
  flex: 0 0 auto;
  position: relative;
  overflow: hidden;
}

.sk-status-indicator::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

.sk-status-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sk-status-meta {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: flex-end;
  min-width: 120px;
}

.sk-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.sk-status-card {
  padding: 1.25rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.sk-status-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  justify-content: space-between;
}

.sk-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
  width: 6.5rem;
  height: 1.6rem;
}

.sk-status-pill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

.sk-status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--skeleton-base);
  flex: 0 0 auto;
}

.sk-status-metrics {
  display: flex;
  gap: 1.5rem;
}

.sk-status-metric {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.sk-status-sparkline {
  width: 100%;
  height: 34px;
  border-radius: 4px;
  background: var(--skeleton-base);
  position: relative;
  overflow: hidden;
}

.sk-status-sparkline::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-highlight) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sk-shimmer 1.4s ease-in-out infinite;
}

/* --------- Contact form --------- */
.sk-form {
  padding: 2rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.sk-form-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sk-form-row .sk-label {
  height: 0.8rem;
  width: 25%;
}

.sk-form-row .sk-input {
  height: 2.75rem;
  width: 100%;
  border-radius: var(--radius, 10px);
}

.sk-form-row .sk-textarea {
  height: 9rem;
  width: 100%;
  border-radius: var(--radius, 10px);
}

.sk-form-submit {
  width: 10rem;
  height: 2.75rem;
  margin-top: 0.5rem;
}

/* --------- Licensing / Accessibility content sections ---------
   Real pages render <section> blocks with padding: 1.5rem 0 (a11y)
   or 1.75rem 0 (licensing) and a bottom border separator (no card
   background). The skeleton mirrors that flat, left-aligned layout. */
.sk-doc-section {
  padding: 1.5rem 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--skeleton-border);
  border-radius: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 0;
  text-align: left;
}

/* Licensing page uses slightly taller section padding (1.75rem 0). */
.sk-licensing .sk-doc-section {
  padding: 1.75rem 0;
}

.sk-doc-section:last-of-type {
  border-bottom: none;
}

.sk-doc-section .sk-section-heading {
  height: 1.5rem;
  width: 35%;
  margin-bottom: 0.25rem;
}

.sk-doc-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding-left: 1.25rem;
  margin-top: 0.25rem;
}

.sk-doc-list .sk-line {
  height: 0.8rem;
}

/* Boxed variant for skeleton sections that should render as a card
   (kept available for pages that use elevated card layouts). */
.sk-doc-section.sk-doc-section-boxed {
  padding: 1.75rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--skeleton-border);
  border-radius: var(--radius-lg, 16px);
  border-bottom: 1px solid var(--skeleton-border);
  margin-bottom: 1.25rem;
}

.sk-doc-section.sk-doc-section-boxed:last-of-type {
  border-bottom: 1px solid var(--skeleton-border);
}

/* --------- Section heading skeleton --------- */
.sk-section-head {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* --------- 404 --------- */
.sk-notfound {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 3rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.sk-notfound .sk-line {
  margin-left: auto;
  margin-right: auto;
}

.sk-notfound .sk-code {
  width: 45%;
  height: 5rem;
  margin-bottom: 0.5rem;
}

.sk-notfound .sk-quote {
  width: 85%;
  height: 6rem;
  border-left: 3px solid var(--skeleton-border);
  border-radius: 4px;
  margin: 1rem 0;
}

.sk-notfound-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.sk-notfound-actions .sk-pill {
  width: 9rem;
  height: 2.75rem;
}

/* Responsive */
@media (max-width: 860px) {
  .sk-two-panel {
    grid-template-columns: 1fr;
  }
  .sk-docs-layout {
    grid-template-columns: 1fr;
  }
  .sk-sidebar {
    position: static;
  }
  .sk-nav-links .sk-line:nth-child(n + 3) {
    display: none;
  }
  .sk-snippets-grid {
    grid-template-columns: 1fr;
  }
  .sk-status-grid {
    grid-template-columns: 1fr;
  }
  .sk-pg-field-row {
    grid-template-columns: 1fr;
  }
  .sk-status-summary {
    flex-wrap: wrap;
  }
  .sk-status-meta {
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sk-line::after,
  .sk-circle::after,
  .sk-block::after,
  .sk-pill::after,
  .sk-tag::after,
  .sk-code-block::after,
  .sk-btn-placeholder::after,
  .sk-status-indicator::after,
  .sk-status-dot::after,
  .sk-status-sparkline::after,
  .sk-status-pill::after,
  .sk-pg-response::after,
  .sk-code-bar .sk-dot::after,
  .sk-sidebar-link::after {
    animation: none;
    display: none;
  }
  .page-skeleton {
    transition-duration: 0.01ms;
    transform: none !important;
  }
  .page-skeleton.is-hiding {
    transform: none !important;
  }
  body.is-loaded .site-header,
  body.is-loaded main,
  body.is-loaded .site-footer {
    transition-duration: 0.01ms;
  }
}