/* User Guide layout. Inherits the site theme tokens (theme.css); purple accent. */

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 24rem) minmax(0, 1fr);
  gap: var(--spacer-8);
  align-items: start;
  padding-top: var(--spacer-7);
  padding-bottom: var(--spacer-9);
}

.guide-sidebar {
  position: sticky;
  top: var(--spacer-6);
  max-height: calc(100vh - var(--spacer-8));
  overflow-y: auto;
  padding-right: var(--spacer-4);
  border-right: 1px solid var(--color-border-muted);
}

.guide-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacer-2);
  font-size: 1.4rem;
}

.guide-nav a {
  color: var(--color-fg-muted);
  text-decoration: none;
  display: block;
  padding: var(--spacer-1) var(--spacer-2);
  border-radius: var(--radius-md);
}

.guide-nav a:hover {
  color: var(--color-fg-default);
  background: var(--color-canvas-subtle);
}

.guide-nav a.is-current,
.guide-nav a[aria-current="page"] {
  color: var(--color-accent-fg);
  background: var(--color-accent-subtle);
  font-weight: 600;
}

.guide-nav-home {
  font-weight: 700;
  color: var(--color-fg-default) !important;
  margin-bottom: var(--spacer-3);
}

.guide-nav-group {
  margin-top: var(--spacer-3);
}

.guide-nav-group-title {
  display: block;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-fg-subtle);
  padding: var(--spacer-1) var(--spacer-2);
}

.guide-nav-section {
  display: block;
  font-weight: 600;
  color: var(--color-fg-default);
  padding: var(--spacer-1) var(--spacer-2);
  margin-top: var(--spacer-2);
}

.guide-nav-pages {
  list-style: none;
  margin: 0 0 var(--spacer-2);
  padding: 0 0 0 var(--spacer-2);
}

.guide-content {
  min-width: 0;
}

.guide-article {
  max-width: 76rem;
}

.guide-breadcrumb {
  font-size: 1.3rem;
  color: var(--color-fg-subtle);
}

.guide-breadcrumb a {
  color: var(--color-fg-muted);
}

.guide-lead {
  font-size: var(--marketing-lead-size);
  color: var(--color-fg-muted);
}

/* Screenshots in the guide body. */
.guide-article img,
.guide-gallery img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--color-border-muted);
  border-radius: var(--radius-md);
  box-shadow: var(--color-shadow-md);
}

.guide-article figure,
.guide-gallery figure {
  margin: var(--spacer-5) 0;
}

.guide-article figcaption,
.guide-gallery figcaption {
  margin-top: var(--spacer-2);
  font-size: 1.3rem;
  color: var(--color-fg-subtle);
  text-align: center;
}

.guide-article video {
  max-width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-muted);
}

/* Theme-aware screenshot variants: author emits both, CSS shows the active one. */
.guide-shot--dark { display: none; }
[data-color-mode="dark"] .guide-shot--light { display: none; }

/* Click-to-enlarge: body and gallery screenshots open in a lightbox overlay. */
.guide-article img,
.guide-gallery img {
  cursor: zoom-in;
}

.guide-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacer-5);
  background: rgba(0, 0, 0, 0.8);
  cursor: zoom-out;
}

.guide-lightbox.is-open {
  display: flex;
}

.guide-lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--color-shadow-md);
}

.guide-lightbox-close {
  position: absolute;
  top: var(--spacer-3);
  right: var(--spacer-4);
  padding: 0;
  border: 0;
  background: none;
  color: #fff;
  font-size: 3.2rem;
  line-height: 1;
  cursor: pointer;
}
[data-color-mode="dark"] .guide-shot--dark { display: inline; }

.guide-page-list {
  list-style: none;
  padding: 0;
}

.guide-page-list li {
  padding: var(--spacer-2) 0;
  border-bottom: 1px solid var(--color-border-muted);
}

.guide-page-excerpt {
  color: var(--color-fg-subtle);
  font-size: 1.4rem;
}

.guide-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr));
  gap: var(--spacer-5);
  margin-top: var(--spacer-6);
}

.guide-index-card {
  border: 1px solid var(--color-border-muted);
  border-radius: var(--radius-lg);
  padding: var(--spacer-5);
  background: var(--color-canvas-subtle);
}

.guide-index-card h2 {
  margin-top: 0;
}

.guide-section-block {
  margin-top: var(--spacer-6);
}

.guide-prevnext {
  display: flex;
  justify-content: space-between;
  gap: var(--spacer-4);
  margin-top: var(--spacer-8);
  padding-top: var(--spacer-5);
  border-top: 1px solid var(--color-border-muted);
}

.guide-prevnext-link {
  display: flex;
  flex-direction: column;
  gap: var(--spacer-1);
  padding: var(--spacer-4);
  border: 1px solid var(--color-border-muted);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-fg-default);
  max-width: 48%;
}

.guide-prevnext-link:hover {
  border-color: var(--color-accent-emphasis);
}

.guide-prevnext-next {
  text-align: right;
  align-items: flex-end;
}

.guide-prevnext-dir {
  font-size: 1.2rem;
  color: var(--color-accent-fg);
}

.guide-prevnext-title {
  font-weight: 600;
}

@media (max-width: 860px) {
  .guide-layout {
    grid-template-columns: 1fr;
  }
  .guide-sidebar {
    position: static;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--color-border-muted);
    padding-right: 0;
    padding-bottom: var(--spacer-4);
    margin-bottom: var(--spacer-4);
  }
}