/* ========================================
   NyxAstra Template Gallery
   Augments the global design system in styles.css
   ======================================== */

/* The browser's default `[hidden] { display: none }` from the UA
   stylesheet has the same specificity (0,0,1,0) as any author class
   selector. Since author CSS is loaded after UA, a class rule like
   `.gallery-grid { display: grid }` wins the tie and the element stays
   visible even when JS sets `hidden=true`. Re-assert with !important
   so the `hidden` attribute is universally honored on this page. */
[hidden] { display: none !important; }

/* ---------- Gallery header ---------- */
.gallery-header {
  padding: 96px 0 56px;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border);
}
.gallery-breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}
.gallery-breadcrumb a { color: var(--color-text-light); }
.gallery-breadcrumb a:hover { color: var(--color-accent-blue); }
.gallery-breadcrumb span { margin: 0 6px; opacity: 0.6; }
.gallery-header h1 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.gallery-header .lead {
  font-size: 1.125rem;
  color: var(--color-text-light);
  max-width: 720px;
  margin-bottom: 28px;
}
.gallery-header-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-bottom: 28px;
  font-size: 0.9375rem;
  color: var(--color-text-light);
}
.gallery-stat strong {
  color: var(--color-text);
  font-weight: 600;
  margin-right: 4px;
}
.gallery-header-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Filter bar ---------- */
.gallery-filters {
  padding: 24px 0 12px;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  z-index: 10;
  border-bottom: 1px solid var(--color-border);
}
.filter-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
}
.filter-search {
  position: relative;
  display: flex;
  align-items: center;
}
.filter-search svg {
  position: absolute;
  left: 14px;
  color: var(--color-text-light);
  pointer-events: none;
}
.filter-search input {
  width: 100%;
  padding: 10px 14px 10px 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.filter-search input:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.filter-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.filter-controls select {
  padding: 9px 32px 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 10px center;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  font-size: 0.875rem;
  font-family: inherit;
  color: var(--color-text);
  cursor: pointer;
  transition: border-color var(--transition);
}
.filter-controls select:hover { border-color: var(--color-accent-blue); }
.filter-controls select:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.filter-clear {
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-light);
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}
.filter-clear:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}
.filter-result-count {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--color-text-light);
}
.filter-result-count #filter-result-count {
  font-weight: 600;
  color: var(--color-text);
}

/* ---------- Gallery grid ---------- */
.gallery-section { padding: 40px 0 80px; }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.gallery-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.gallery-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.gallery-card-cover {
  position: relative;
  aspect-ratio: 1;
  background: var(--color-bg-alt);
  overflow: hidden;
}
.gallery-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery-card:hover .gallery-card-cover img { transform: scale(1.04); }
.gallery-card-cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 0.8125rem;
}
.gallery-card-featured {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.78);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  backdrop-filter: blur(4px);
}
.gallery-card-body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.gallery-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.35;
}
.gallery-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--color-text-light);
}
.gallery-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.gallery-tag {
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  font-size: 0.6875rem;
  font-weight: 500;
}
.gallery-tag-cat   { background: #ede9fe; color: #6d28d9; }

/* Skeleton loading state */
.gallery-skeleton {
  pointer-events: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 360px;
  position: relative;
  background: var(--color-bg-alt);
}
.gallery-skeleton::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.6) 50%,
    transparent 100%
  );
  animation: skeleton-shimmer 1.6s infinite;
}
@keyframes skeleton-shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Empty / error state */
.gallery-empty,
.gallery-error {
  text-align: center;
  padding: 80px 24px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-light);
}
.gallery-empty h3,
.gallery-error h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}
.gallery-empty p,
.gallery-error p {
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Detail page ---------- */
.detail-state {
  padding: 120px 0 80px;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.detail-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent-blue);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spinner-rotate 0.8s linear infinite;
}
@keyframes spinner-rotate {
  to { transform: rotate(360deg); }
}

.detail-hero {
  /* The site’s navbar is `position: fixed` and 72px tall, so the first
     hero section needs at least ~96px of top padding to keep the
     breadcrumb from sitting under the nav. Matches the `.hero-app`
     pattern in styles.css for visual consistency across pages. */
  padding: 120px 0 40px;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border);
}
.detail-breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
}
.detail-breadcrumb a { color: var(--color-text-light); }
.detail-breadcrumb a:hover { color: var(--color-accent-blue); }
.detail-breadcrumb span { margin: 0 6px; opacity: 0.6; }

.detail-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 48px;
  align-items: start;
}
.detail-cover-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-alt);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 1;
  position: relative;
}
/* The cover is wrapped in a <button> so users can click to open the
   original full-resolution image in a lightbox overlay. */
.detail-cover-button {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
  position: relative;
  outline: none;
  -webkit-appearance: none;
          appearance: none;
}
.detail-cover-button:focus-visible {
  box-shadow: inset 0 0 0 3px var(--color-accent-blue);
}
.detail-cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* Small "View original" affordance — fades in on hover/focus so it doesn't
   compete with the artwork at rest. */
.detail-cover-hint {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
}
.detail-cover-button:hover .detail-cover-hint,
.detail-cover-button:focus-visible .detail-cover-hint {
  opacity: 1;
  transform: translateY(0);
}
.detail-cover-hint svg { display: block; }

/* ============================================================
   Lightbox overlay (matches the one on /products/nyxastra.html).
   Activated by JS when the cover button is clicked.
   ============================================================ */
.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.85);
  align-items: center;
  justify-content: center;
  padding: 32px;
  cursor: zoom-out;
}
.lightbox-overlay.active { display: flex; }
.lightbox-overlay img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-lg, 16px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  object-fit: contain;
}
.lightbox-caption {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 1rem;
  font-weight: 500;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
  max-width: calc(100vw - 64px);
  text-align: center;
}
.lightbox-close {
  position: fixed;
  top: 20px;
  right: 24px;
  background: transparent;
  border: 0;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  padding: 4px 12px;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.lightbox-close:hover,
.lightbox-close:focus-visible { opacity: 1; outline: none; }
.detail-summary {
  padding-top: 4px;
}
.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.detail-summary h1 {
  font-size: 2.25rem;
  line-height: 1.2;
  margin-bottom: 16px;
}
.detail-author {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: 28px;
}
.detail-author #detail-author-name,
.detail-author #detail-license {
  color: var(--color-text);
  font-weight: 500;
}
.detail-author-divider { margin: 0 8px; opacity: 0.5; }
.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
.detail-download-size {
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.85;
  margin-left: 8px;
}
.detail-import-hint {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* Detail body grid (main + sidebar) */
.detail-section { padding: 56px 0; }
.detail-section-alt {
  background: var(--color-bg-alt);
  padding: 64px 0;
  text-align: center;
}
.detail-body-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}
.detail-main { min-width: 0; }

.detail-block { margin-bottom: 40px; }
.detail-block-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}
.detail-block-header h2 { font-size: 1.375rem; }
.detail-block-header h3 { font-size: 1.125rem; }
.detail-block-count {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  background: var(--color-bg-alt);
  padding: 2px 10px;
  border-radius: 999px;
}
.detail-block-hint {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--color-text-light);
}
.detail-block-hint code {
  background: var(--color-bg-alt);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.8125rem;
}

/* Prompt body */
#detail-prompt {
  background: var(--color-primary);
  color: #e2e8f0;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 540px;
  overflow-y: auto;
}
#detail-prompt code { color: inherit; background: none; padding: 0; }
#detail-prompt .var-token {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.12);
  padding: 1px 4px;
  border-radius: 3px;
}

/* Variable list */
.var-row {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  margin-bottom: 12px;
  background: var(--color-bg);
}
.var-row-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
}
.var-name {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
}
.var-kind {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  background: #ede9fe;
  color: #6d28d9;
}
.var-desc {
  font-size: 0.875rem;
  color: var(--color-text);
  margin-bottom: 10px;
}
.var-default {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}
.var-default-value {
  font-family: var(--font-mono);
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-text);
  word-break: break-word;
}
.var-allowed {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}
.var-allowed-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-bg-alt);
  color: var(--color-text);
}

/* Sidebar cards */
.detail-sidebar { display: flex; flex-direction: column; gap: 16px; }
.detail-block-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  margin-bottom: 0;
}
.detail-block-card h3 {
  font-size: 0.9375rem;
  margin-bottom: 14px;
  color: var(--color-primary);
}
.detail-meta-list,
#detail-preset-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 8px 14px;
  font-size: 0.875rem;
}
.detail-meta-list dt,
#detail-preset-list dt {
  color: var(--color-text-light);
  font-weight: 500;
}
.detail-meta-list dd,
#detail-preset-list dd {
  color: var(--color-text);
  font-weight: 500;
  word-break: break-word;
}
#detail-preset-list dd code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: var(--color-bg-alt);
  padding: 1px 6px;
  border-radius: 4px;
}
.detail-report p {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

/* Generic link-button (used in headers + report card) */
.link-button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8125rem;
  color: var(--color-accent-blue);
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
}
.link-button:hover { color: var(--color-accent-blue-hover); }
.link-button.copied { color: var(--color-success); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .gallery-header { padding: 72px 0 40px; }
  .gallery-header h1 { font-size: 2rem; }
  .filter-bar {
    grid-template-columns: minmax(0, 1fr);
  }
  .filter-controls { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .filter-controls select { flex-shrink: 0; }

  .detail-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .detail-hero { padding: 100px 0 32px; }
  .detail-summary h1 { font-size: 1.625rem; }
  .detail-body-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
}

@media (max-width: 600px) {
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 14px;
  }
  .gallery-card-body { padding: 12px 14px 14px; gap: 6px; }
  .gallery-card-title { font-size: 0.875rem; }
  .gallery-card-tags { display: none; }
  .gallery-skeleton { height: 240px; }
}