/* ══════════════════════════════════════════════════════════════
   Page Primitives — shared structural CSS for admin page templates.

   Three layout modes:
   1. Standard  — shell provides var(--s-space-5) padding. Page adds none.
   2. Full-bleed — shell padding 0. Page owns all layout.
   3. Explorer  — shell padding 0. Sidebar + viewport grid.

   Import this file in admin-index.html alongside admin-shell.css.
   ══════════════════════════════════════════════════════════════ */


/* ── Page Header ─────────────────────────────────────────────── */

.pg-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--s-space-4);
}

.pg-header-text {
  display: flex;
  flex-direction: column;
  gap: var(--s-space-2);
}

.pg-title {
  font-size: var(--s-font-size-4);
  font-weight: 600;
  color: var(--s-color-fg-primary);
  margin: 0;
  line-height: 1.2;
}

.pg-subtitle {
  font-size: var(--s-font-size-0);
  color: var(--s-color-fg-muted);
  margin: 0;
}

.pg-header-actions {
  display: flex;
  align-items: center;
  gap: var(--s-space-3);
  flex-shrink: 0;
}


/* ── Stats Row ───────────────────────────────────────────────── */

.pg-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--s-space-4);
}

.pg-stat {
  background: var(--s-surface-elevation-1-bg);
  border: 1px solid var(--s-color-border-subtle);
  border-radius: var(--s-radius-2);
  padding: var(--s-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-space-1);
}

.pg-stat-value {
  font-size: var(--s-font-size-3);
  font-weight: 700;
  color: var(--s-color-fg-primary);
}

.pg-stat-label {
  font-size: var(--s-font-size-0);
  color: var(--s-color-fg-muted);
  font-weight: 500;
}


/* ── Filter Bar ──────────────────────────────────────────────── */

.pg-filters {
  display: flex;
  align-items: center;
  gap: var(--s-space-3);
  flex-wrap: wrap;
}

.pg-search {
  flex: 1;
  min-width: 200px;
}

/* Shared input/select/button reset for filter elements */
.pg-search,
.pg-select {
  padding: var(--s-space-2) var(--s-space-3);
  border: 1px solid var(--s-color-border-subtle);
  border-radius: var(--s-radius-2);
  background: var(--s-surface-elevation-1-bg);
  color: var(--s-color-fg-primary);
  font-size: var(--s-font-size-0);
  font-family: var(--s-font-sans);
  transition: border-color var(--s-duration-fast) var(--s-ease-out);
}

.pg-search::placeholder {
  color: var(--s-color-fg-soft);
}

.pg-search:hover,
.pg-select:hover {
  border-color: var(--s-color-border-strong);
}

.pg-search:focus,
.pg-select:focus {
  outline: none;
  border-color: var(--s-color-accent-active);
}

/* View toggle (table/grid/etc.) */
.pg-view-toggle {
  display: flex;
  border: 1px solid var(--s-color-border-subtle);
  border-radius: var(--s-radius-2);
  overflow: hidden;
}

.pg-view-btn {
  padding: var(--s-space-2) var(--s-space-3);
  background: transparent;
  border: none;
  color: var(--s-color-fg-muted);
  font-size: var(--s-font-size-0);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--s-transition-colors);
}

.pg-view-btn:hover {
  color: var(--s-color-fg-primary);
  background: var(--s-color-hover-bg);
}

.pg-view-btn.is-active {
  background: var(--s-surface-elevation-2-bg);
  color: var(--s-color-fg-primary);
}


/* ── Action Buttons ──────────────────────────────────────────── */

.pg-btn {
  display: flex;
  align-items: center;
  gap: var(--s-space-2);
  padding: var(--s-space-2) var(--s-space-3);
  border: none;
  border-radius: var(--s-radius-2);
  font-size: var(--s-font-size-0);
  font-weight: 500;
  font-family: var(--s-font-sans);
  cursor: pointer;
  transition: var(--s-transition-colors);
  white-space: nowrap;
}

.pg-btn svg {
  width: var(--s-icon-sm);
  height: var(--s-icon-sm);
  flex-shrink: 0;
}

.pg-btn--primary {
  background: var(--s-brand-500);
  color: var(--s-color-accent-foreground);
}

.pg-btn--primary:hover {
  background: var(--s-brand-600);
}

.pg-btn--secondary {
  background: transparent;
  border: 1px solid var(--s-color-border-subtle);
  color: var(--s-color-fg-muted);
}

.pg-btn--secondary:hover {
  border-color: var(--s-color-border-strong);
  color: var(--s-color-fg-primary);
}

.pg-btn--ghost {
  background: transparent;
  color: var(--s-color-fg-muted);
}

.pg-btn--ghost:hover {
  color: var(--s-color-fg-primary);
  background: var(--s-color-hover-bg);
}


/* ── Data Table ──────────────────────────────────────────────── */

.pg-table-wrap {
  overflow-x: auto;
}

.pg-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--s-font-size-0);
}

.pg-table th {
  text-align: left;
  padding: var(--s-space-3);
  font-weight: 600;
  color: var(--s-color-fg-muted);
  background: var(--s-surface-elevation-2-bg);
  border-bottom: 1px solid var(--s-color-border-subtle);
}

.pg-table td {
  padding: var(--s-space-3);
  border-bottom: 1px solid var(--s-color-border-subtle);
}

.pg-table tbody tr {
  transition: background-color var(--s-duration-fast);
}

.pg-table tbody tr:hover {
  background: var(--s-color-hover-bg);
}


/* ── Card Grid ───────────────────────────────────────────────── */

.pg-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--s-space-4);
}

.pg-card {
  background: var(--s-surface-elevation-1-bg);
  border: 1px solid var(--s-color-border-subtle);
  border-radius: var(--s-radius-2);
  padding: var(--s-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-space-3);
  cursor: pointer;
  transition: var(--s-transition-colors);
}

.pg-card:hover {
  border-color: var(--s-color-border-strong);
  background: var(--s-color-hover-bg);
}

.pg-card-title {
  font-size: var(--s-font-size-1);
  font-weight: 600;
  color: var(--s-color-fg-primary);
  margin: 0;
}

.pg-card-body {
  font-size: var(--s-font-size-0);
  color: var(--s-color-fg-muted);
  line-height: var(--s-font-line-height-relaxed);
}

.pg-card-meta {
  display: flex;
  align-items: center;
  gap: var(--s-space-2);
  font-size: 12px;
  color: var(--s-color-fg-soft);
  flex-wrap: wrap;
  margin-top: auto;
}


/* ── Badge ───────────────────────────────────────────────────── */

.pg-badge {
  display: inline-block;
  padding: var(--s-space-1) var(--s-space-2);
  border-radius: var(--s-radius-1);
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
}

.pg-badge--default {
  background: var(--s-surface-elevation-2-bg);
  color: var(--s-color-fg-muted);
}

.pg-badge--accent {
  background: var(--s-brand-100);
  color: var(--s-brand-900);
}

.pg-badge--success {
  background: oklch(0.92 0.04 160);
  color: oklch(0.30 0.06 160);
}

.pg-badge--warning {
  background: oklch(0.92 0.06 85);
  color: oklch(0.35 0.08 85);
}

.pg-badge--featured {
  background: oklch(0.92 0.06 85);
  color: oklch(0.35 0.08 85);
}


/* ── Section Title ───────────────────────────────────────────── */

.pg-section-title {
  font-size: var(--s-font-size-2);
  font-weight: 600;
  color: var(--s-color-fg-primary);
  margin: 0;
}

.pg-section-title--sub {
  font-size: var(--s-font-size-1);
  font-weight: 600;
  color: var(--s-color-fg-primary);
  margin: 0;
}


/* ── Empty State ─────────────────────────────────────────────── */

.pg-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--s-space-3);
  padding: var(--s-space-7) var(--s-space-5);
  text-align: center;
}

.pg-empty-icon {
  font-size: 32px;
  color: var(--s-color-fg-soft);
  opacity: 0.5;
}

.pg-empty-message {
  font-size: var(--s-font-size-1);
  color: var(--s-color-fg-muted);
  margin: 0;
}

.pg-empty-action {
  margin-top: var(--s-space-2);
}


/* ── Loading State ───────────────────────────────────────────── */

.pg-loading {
  display: flex;
  align-items: center;
  gap: var(--s-space-3);
  padding: var(--s-space-6);
  color: var(--s-color-fg-muted);
  font-size: var(--s-font-size-0);
}

.pg-loading-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--s-radius-round);
  background: var(--s-brand-500);
  animation: pg-pulse 1.2s ease-in-out infinite;
}

@keyframes pg-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}


/* ── Link ────────────────────────────────────────────────────── */

.pg-link {
  color: var(--s-color-accent-active);
  text-decoration: none;
  font-weight: 500;
}

.pg-link:hover {
  text-decoration: underline;
}


/* ── Layout: Standard Page ───────────────────────────────────── */
/* Mode 1 root container. Shell provides padding.
   Page module uses this as the root class. */

.pg-standard {
  display: flex;
  flex-direction: column;
  gap: var(--s-space-5);
  color: var(--s-color-fg-primary);
}


/* ── Layout: Editor Page ─────────────────────────────────────── */
/* Mode 2 root container. Full-bleed, page owns all layout. */

.pg-editor {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 64px);
  overflow: hidden;
  background: var(--s-surface-elevation-0-bg);
  color: var(--s-color-fg-primary);
}

.pg-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-space-4) var(--s-space-5);
  border-bottom: 1px solid var(--s-color-border-subtle);
  background: var(--s-surface-elevation-1-bg);
  flex-shrink: 0;
}

.pg-editor-header-left {
  display: flex;
  align-items: center;
  gap: var(--s-space-4);
}

.pg-editor-title-group {
  display: flex;
  align-items: baseline;
  gap: var(--s-space-3);
}

.pg-editor-title {
  font-size: var(--s-font-size-3);
  font-weight: 600;
  margin: 0;
}

.pg-editor-status {
  font-size: var(--s-font-size-0);
  color: var(--s-color-fg-soft);
}

.pg-editor-workspace {
  flex: 1;
  overflow-y: auto;
  padding: var(--s-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-space-5);
}


/* ── Layout: Explorer Page ───────────────────────────────────── */
/* Mode 3 root container. Full-bleed sidebar + viewport grid. */

.pg-explorer {
  display: grid;
  grid-template-columns: var(--pg-sidebar-width, 240px) 1fr;
  grid-template-rows: 1fr;
  height: 100%;
  overflow: hidden;
  color: var(--s-color-fg-primary);
}

.pg-explorer-sidebar {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--s-color-border-subtle);
  background: var(--s-color-bg-subtle);
  overflow-y: auto;
}

.pg-explorer-sidebar-section {
  padding: var(--s-space-4) var(--s-space-5);
  border-bottom: 1px solid var(--s-color-border-subtle);
}

.pg-explorer-sidebar-title {
  font-size: var(--s-font-size-0);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--s-color-fg-soft);
  margin: 0 0 var(--s-space-3) 0;
}

.pg-explorer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-space-2);
  padding: var(--s-space-2) var(--s-space-3);
  border: none;
  background: none;
  border-radius: var(--s-radius-1);
  font-size: var(--s-font-size-0);
  font-family: var(--s-font-sans);
  color: var(--s-color-fg-muted);
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: var(--s-transition-colors);
}

.pg-explorer-item:hover {
  background: var(--s-color-hover-bg);
  color: var(--s-color-fg-primary);
}

.pg-explorer-item[data-active="true"],
.pg-explorer-item.is-active {
  background: var(--s-color-hover-bg-strong);
  color: var(--s-color-fg-primary);
  font-weight: 500;
}

.pg-explorer-item-badge {
  font-size: 11px;
  color: var(--s-color-fg-soft);
  min-width: 20px;
  text-align: right;
}

.pg-explorer-viewport {
  position: relative;
  background: var(--s-surface-elevation-0-bg);
  overflow: hidden;
}

/* Viewport with iframe fills completely */
.pg-explorer-viewport iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* Viewport with inline content gets padding */
.pg-explorer-viewport--padded {
  overflow-y: auto;
  padding: var(--s-space-5);
}

/* Explorer empty state (centered in viewport) */
.pg-explorer-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--s-space-3);
  color: var(--s-color-fg-soft);
  font-size: var(--s-font-size-1);
}


/* ── Responsive ──────────────────────────────────────────────── */

@media (max-width: 900px) {
  .pg-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .pg-card-grid {
    grid-template-columns: 1fr;
  }

  .pg-explorer {
    grid-template-columns: 200px 1fr;
  }
}

@media (max-width: 600px) {
  .pg-stats {
    grid-template-columns: 1fr;
  }

  .pg-explorer {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .pg-explorer-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--s-color-border-subtle);
    max-height: 200px;
  }
}