/* ==========================================================================
   Content Hub — Story 8.1
   Central browse experience for saved dashboards, explorations, views,
   and reports.  Uses the same design token system as the rest of the app.
   ========================================================================== */

/* ---------- Page container ---------- */
.content-hub-page {
  min-height: calc(100vh - var(--nav-height));
  padding: var(--spacing-lg, 1.5rem);
}

.content-hub-container {
  display: flex;
  gap: var(--spacing-lg, 1.5rem);
  min-height: calc(100vh - 120px);
  align-items: flex-start;
}

/* ---------- Sidebar ---------- */
.content-hub-sidebar {
  flex: 0 0 220px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-sm);
  height: fit-content;
  position: sticky;
  top: var(--spacing-lg);
}

.content-hub-sidebar-title {
  font-family: var(--font-heading, "Unbounded", sans-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
}

.content-hub-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.content-hub-sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.875rem;
  text-align: left;
  width: 100%;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}

.content-hub-sidebar-item:hover {
  background: rgba(234, 179, 8, 0.08);
  color: var(--text-primary);
}

.content-hub-sidebar-item:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: -2px;
}

.content-hub-sidebar-item--active {
  background: rgba(234, 179, 8, 0.12);
  color: var(--accent, #eab308);
  font-weight: 500;
}

.content-hub-sidebar-icon {
  font-size: 1rem;
  flex-shrink: 0;
  width: 1.5rem;
  text-align: center;
}

.content-hub-sidebar-label {
  flex: 1;
}

.content-hub-sidebar-count {
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  min-width: 1.5rem;
  text-align: center;
}

.content-hub-sidebar-item--active .content-hub-sidebar-count {
  background: rgba(234, 179, 8, 0.2);
  color: var(--accent, #eab308);
}

/* ---------- Main content area ---------- */
.content-hub-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ---------- Toolbar ---------- */
.content-hub-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.content-hub-toolbar-spacer {
  flex: 1;
  min-width: var(--spacing-sm);
}

/* ---------- View toggle ---------- */
.content-hub-view-toggle {
  display: inline-flex;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  border-radius: 6px;
  overflow: hidden;
  height: 34px;
}

.content-hub-view-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}

.content-hub-view-toggle-btn:not(:last-child) {
  border-right: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
}

.content-hub-view-toggle-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.content-hub-view-toggle-btn:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: -2px;
}

.content-hub-view-toggle-btn--active {
  background: var(--accent-muted, rgba(234, 179, 8, 0.15));
  color: var(--accent, #eab308);
}

.content-hub-view-toggle-icon {
  font-size: 1rem;
  line-height: 1;
  position: relative;
  top: -1px; /* optical alignment */
}

/* ---------- Create New CTA ---------- */
.content-hub-create-new-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0 var(--spacing-md);
  height: 34px;
  background: var(--accent, #eab308);
  color: var(--accent-text, #171717);
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  transition:
    background 0.15s ease,
    box-shadow 0.15s ease;
  white-space: nowrap;
}

.content-hub-create-new-btn:hover {
  background: var(--accent-hover, #fde047);
  box-shadow: 0 2px 8px rgba(234, 179, 8, 0.3);
}

.content-hub-create-new-btn:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
}

.content-hub-create-new-icon {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1;
}

/* ---------- Search bar ---------- */
.content-hub-search {
  position: relative;
  flex: 1;
  max-width: 360px;
  min-width: 180px;
}

.content-hub-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.875rem;
  pointer-events: none;
  color: var(--text-muted);
}

.content-hub-search-input {
  width: 100%;
  height: 34px;
  padding: 0 0.75rem 0 2.25rem;
  border-radius: 6px;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.875rem;
  outline: none;
  box-sizing: border-box;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.content-hub-search-input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.content-hub-search-input:focus {
  border-color: var(--accent, #eab308);
  box-shadow: 0 0 0 2px var(--accent-muted);
}

/* ---------- Content grid ---------- */
.content-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

/* ---------- Content card ---------- */
.content-hub-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
  position: relative; /* for hover action reveal */
}

.content-hub-card:hover {
  border-color: rgba(234, 179, 8, 0.3);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

/* Card header — type icon + badge + action buttons + favourite */
.content-hub-card-header {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.content-hub-card-type-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

.content-hub-card-type-badge {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.06);
  padding: 0.125rem 0.45rem;
  border-radius: 999px;
  flex-shrink: 0;
}

/* Action buttons — hidden until card is hovered */
.content-hub-card-action {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0.2rem 0.3rem;
  border-radius: var(--radius-sm);
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.15s ease,
    color 0.15s ease,
    background 0.15s ease;
}

.content-hub-card:hover .content-hub-card-action {
  opacity: 1;
  pointer-events: auto;
}

.content-hub-card-action:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.content-hub-card-action:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
  opacity: 1;
  pointer-events: auto;
}

/* Favourite button — always visible, auto-pushes to far right */
.content-hub-card-favourite {
  margin-left: auto;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  color: var(--text-muted);
  padding: 0.2rem 0.3rem;
  border-radius: var(--radius-sm);
  transition:
    color 0.15s ease,
    transform 0.15s ease;
  line-height: 1;
  flex-shrink: 0;
}

.content-hub-card-favourite:hover {
  color: var(--accent, #eab308);
  transform: scale(1.15);
}

.content-hub-card-favourite:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
}

.content-hub-card-favourite--active {
  color: var(--accent, #eab308);
}

/* Card body — clickable link */
.content-hub-card-body {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.content-hub-card-body:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.content-hub-card-title {
  font-family: var(--font-heading, "Unbounded", sans-serif);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.3;
}

.content-hub-card-description {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Card footer — owner + sharing badge + modified date */
.content-hub-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--border-color, rgba(255, 255, 255, 0.06));
  font-size: 0.75rem;
  color: var(--text-secondary);
  /* Three-slot layout: owner | badge | date */
  flex-wrap: nowrap;
}

.content-hub-card-owner {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.content-hub-card-date {
  flex-shrink: 0;
  white-space: nowrap;
  color: var(--text-muted);
}

/* ---------- List view ---------- */
.content-hub-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.content-hub-list-header {
  display: grid;
  grid-template-columns: 120px 1fr 1fr 140px 110px;
  width: 100%;
  box-sizing: border-box;
  gap: 0;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.content-hub-list-row {
  display: grid;
  grid-template-columns: 120px 1fr 1fr 140px 110px;
  width: 100%;
  box-sizing: border-box;
  gap: 0;
  padding: 0.625rem 1rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.04));
  text-decoration: none;
  color: inherit;
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.8125rem;
  align-items: center;
  transition: background 0.15s ease;
}

.content-hub-list-row:last-child {
  border-bottom: none;
}

.content-hub-list-row:hover {
  background: rgba(234, 179, 8, 0.05);
}

.content-hub-list-row:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: -2px;
}

.content-hub-list-cell {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding-right: 0.75rem;
}

.content-hub-list-cell--type {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.content-hub-list-cell--title {
  color: var(--text-primary);
  font-weight: 500;
}

.content-hub-list-cell--owner {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.content-hub-list-cell--date {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-align: right;
  padding-right: 0;
}

.content-hub-list-type-icon {
  font-size: 0.9375rem;
  flex-shrink: 0;
}

/* ---------- Light theme — list view ---------- */
[data-theme="light"] .content-hub-list {
  border-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

[data-theme="light"] .content-hub-list-header {
  background: rgba(0, 0, 0, 0.03);
  border-bottom-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

[data-theme="light"] .content-hub-list-row {
  background: var(--bg-secondary, #ffffff);
  border-bottom-color: var(--border-color, rgba(0, 0, 0, 0.04));
}

[data-theme="light"] .content-hub-list-row:hover {
  background: rgba(234, 179, 8, 0.04);
}

/* ---------- Light theme — toolbar overrides ---------- */
[data-theme="light"] .content-hub-view-toggle {
  border-color: var(--border-color, rgba(0, 0, 0, 0.12));
}

[data-theme="light"] .content-hub-view-toggle-btn:hover {
  background: rgba(234, 179, 8, 0.06);
}

[data-theme="light"] .content-hub-view-toggle-btn--active {
  background: rgba(234, 179, 8, 0.12);
}

/* ---------- Empty state ---------- */
.content-hub-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  min-height: 300px;
}

.content-hub-empty-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.content-hub-empty-title {
  font-family: var(--font-heading, "Unbounded", sans-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm);
}

.content-hub-empty-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 420px;
  line-height: 1.5;
  margin: 0;
}

.content-hub-empty-link {
  color: var(--accent, #eab308);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.content-hub-empty-link:hover {
  text-decoration-thickness: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .content-hub-container {
    flex-direction: column;
  }

  .content-hub-sidebar {
    flex: none;
    width: 100%;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  .content-hub-sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  .content-hub-sidebar-item {
    flex: none;
    width: auto;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8125rem;
  }

  .content-hub-search {
    max-width: 100%;
  }

  .content-hub-grid {
    grid-template-columns: 1fr;
  }

  .content-hub-toolbar {
    flex-wrap: wrap;
  }

  .content-hub-list-header,
  .content-hub-list-row {
    grid-template-columns: 100px 1fr 100px;
  }

  .content-hub-list-cell--desc,
  .content-hub-list-header .content-hub-list-cell--desc {
    display: none;
  }

  .content-hub-list-cell--owner,
  .content-hub-list-header .content-hub-list-cell--owner {
    display: none;
  }
}

/* ---------- Light theme overrides ---------- */
[data-theme="light"] .content-hub-sidebar {
  background: var(--bg-secondary, #f5f5f5);
  border-right-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

[data-theme="light"] .content-hub-card {
  background: var(--bg-secondary, #ffffff);
  border-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

[data-theme="light"] .content-hub-card:hover {
  border-color: rgba(234, 179, 8, 0.4);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .content-hub-search-input {
  background: var(--bg-secondary, #ffffff);
  border-color: var(--border-color, rgba(0, 0, 0, 0.12));
}

[data-theme="light"] .content-hub-sidebar-count {
  background: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .content-hub-card-type-badge {
  background: rgba(0, 0, 0, 0.06);
}

/* ==========================================================================
   Story 8.2 — Folder Management
   ========================================================================== */

/* ---------- Folder section ---------- */
.content-hub-folder-section {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
}

.content-hub-folder-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.content-hub-folder-title {
  font-family: var(--font-heading, "Unbounded", sans-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0;
}

.content-hub-new-folder-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  color: var(--accent, #eab308);
  cursor: pointer;
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition:
    background 0.15s ease,
    border-color 0.15s ease;
}

.content-hub-new-folder-btn:hover {
  background: rgba(234, 179, 8, 0.08);
  border-color: var(--accent, #eab308);
}

.content-hub-new-folder-btn:focus-visible,
.content-hub-new-collection-btn:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
}

/* ─── CSS tooltips for sidebar + buttons ─── */
.content-hub-new-folder-btn[data-tooltip],
.content-hub-new-collection-btn[data-tooltip] {
  position: relative;
}

.content-hub-new-folder-btn[data-tooltip]::after,
.content-hub-new-collection-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 9px;
  background: var(--color-neutral-900, #171717);
  color: var(--color-neutral-50);
  font-size: 0.6875rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.15s ease,
    visibility 0.15s ease;
  z-index: 300;
}

.content-hub-new-folder-btn[data-tooltip]::before,
.content-hub-new-collection-btn[data-tooltip]::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 3px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-neutral-900, #171717);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.15s ease,
    visibility 0.15s ease;
  z-index: 300;
}

.content-hub-new-folder-btn[data-tooltip]:hover::after,
.content-hub-new-folder-btn[data-tooltip]:hover::before,
.content-hub-new-collection-btn[data-tooltip]:hover::after,
.content-hub-new-collection-btn[data-tooltip]:hover::before {
  opacity: 1;
  visibility: visible;
}

/* ---------- Folder tree ---------- */
.content-hub-folder-tree {
  display: flex;
  flex-direction: column;
}

.content-hub-folder-row {
  display: flex;
  align-items: center;
  gap: 0;
}

.content-hub-folder-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.375rem 0.5rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.8125rem;
  text-align: left;
  flex: 1;
  min-width: 0;
  border-radius: var(--radius-sm);
  transition:
    background 0.15s ease,
    color 0.15s ease;
}

.content-hub-folder-item:hover {
  background: rgba(234, 179, 8, 0.08);
  color: var(--text-primary);
}

.content-hub-folder-item:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: -2px;
}

.content-hub-folder-item--active {
  background: rgba(234, 179, 8, 0.12);
  color: var(--accent, #eab308);
  font-weight: 500;
}

.content-hub-folder-toggle {
  font-size: 0.625rem;
  width: 0.75rem;
  flex-shrink: 0;
  text-align: center;
  color: var(--text-secondary);
}

.content-hub-folder-toggle--leaf {
  width: 0.75rem;
}

.content-hub-folder-icon {
  font-size: 0.875rem;
  flex-shrink: 0;
}

.content-hub-folder-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.content-hub-folder-children {
  display: flex;
  flex-direction: column;
}

.content-hub-folder-empty {
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.6;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-style: italic;
}

/* Folder context menu button */
.content-hub-folder-context-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.25rem 0.375rem;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition:
    opacity 0.15s ease,
    background 0.15s ease;
  line-height: 1;
}

.content-hub-folder-row:hover .content-hub-folder-context-btn {
  opacity: 1;
}

.content-hub-folder-context-btn:hover {
  background: rgba(234, 179, 8, 0.12);
  color: var(--accent, #eab308);
}

.content-hub-folder-context-btn:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
  opacity: 1;
}

/* .content-hub-card-action consolidated above (lines ~305-340) */

.content-hub-card-favourite {
  margin-left: 0;
}

/* ==========================================================================
   Story 8.2 — Modal dialogs
   ========================================================================== */

.content-hub-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.content-hub-modal {
  background: var(--bg-primary, #0a0a0a);
  border: 1px solid var(--border-color, #404040);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  min-width: 380px;
  max-width: 480px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  animation: slideUp 0.2s ease;
}

@keyframes slideUp {
  from {
    transform: translateY(16px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.content-hub-modal-title {
  font-family: var(--font-heading, "Unbounded", sans-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md);
}

.content-hub-modal-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.content-hub-modal-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.content-hub-modal-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  background: var(--bg-secondary, #171717);
  color: var(--text-primary);
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.content-hub-modal-input:focus {
  border-color: var(--accent, #eab308);
  box-shadow: 0 0 0 2px rgba(234, 179, 8, 0.2);
}

.content-hub-modal-error {
  font-size: 0.8125rem;
  color: var(--color-error-text, #f87171);
  min-height: 1.25em;
}

.content-hub-modal-message {
  font-size: 0.875rem;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.5;
}

.content-hub-modal-message--warning {
  color: var(--color-warning-text, #fbbf24);
  font-weight: 500;
  font-size: 0.8125rem;
}

.content-hub-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

.content-hub-modal-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    background 0.15s ease,
    border-color 0.15s ease;
}

.content-hub-modal-btn:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
}

.content-hub-modal-btn--primary {
  background: var(--accent, #eab308);
  color: var(--accent-text);
  border-color: var(--accent, #eab308);
}

.content-hub-modal-btn--primary:hover {
  background: var(--accent-hover, #fde047);
}

.content-hub-modal-btn--secondary {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color, rgba(255, 255, 255, 0.12));
}

.content-hub-modal-btn--secondary:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.content-hub-modal-btn--danger {
  background: var(--color-error, #ef4444);
  color: #fff;
  border-color: var(--color-error, #ef4444);
}

.content-hub-modal-btn--danger:hover {
  background: var(--color-red-700, #b91c1c);
}

/* Folder picker in move dialog */
.content-hub-folder-picker {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  max-height: 240px;
  overflow-y: auto;
  padding: var(--spacing-xs);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  border-radius: var(--radius-md);
  background: var(--bg-secondary, #171717);
}

.content-hub-folder-picker-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: background 0.15s ease;
  white-space: pre;
}

.content-hub-folder-picker-option:hover {
  background: rgba(234, 179, 8, 0.08);
}

/* ---------- Light theme — folder & modal overrides ---------- */
[data-theme="light"] .content-hub-folder-section {
  border-top-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

[data-theme="light"] .content-hub-modal {
  background: var(--bg-primary, #ffffff);
  border-color: var(--border-color, rgba(0, 0, 0, 0.12));
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .content-hub-modal-overlay {
  background: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .content-hub-modal-input {
  background: var(--bg-secondary, #f5f5f5);
  border-color: var(--border-color, rgba(0, 0, 0, 0.12));
}

[data-theme="light"] .content-hub-folder-picker {
  background: var(--bg-secondary, #f5f5f5);
  border-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

/* ================================================================
   Story 8.3 — Collections section
   ================================================================ */

.content-hub-collection-section {
  border-top: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.content-hub-collection-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.content-hub-collection-title {
  font-family: var(--font-heading, "Unbounded", sans-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin: 0;
}

.content-hub-new-collection-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  color: var(--accent, #eab308);
  cursor: pointer;
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition:
    background 0.15s ease,
    border-color 0.15s ease;
}

.content-hub-new-collection-btn:hover {
  background: rgba(234, 179, 8, 0.08);
  border-color: var(--accent, #eab308);
}

.content-hub-new-collection-btn:focus-visible {
  outline: 2px solid var(--accent, #eab308);
  outline-offset: 2px;
}

.content-hub-collection-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.content-hub-collection-row {
  display: flex;
  align-items: center;
}

.content-hub-collection-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  width: 100%;
  padding: 0.375rem 0.5rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-body, "Roboto", sans-serif);
  font-size: 0.8125rem;
  text-align: left;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}

.content-hub-collection-item:hover {
  background: rgba(234, 179, 8, 0.08);
  color: var(--text-primary);
}

.content-hub-collection-item--active {
  background: rgba(234, 179, 8, 0.12);
  color: var(--accent, #eab308);
  font-weight: 500;
}

.content-hub-collection-icon {
  font-size: 0.875rem;
  flex-shrink: 0;
  width: 1.25rem;
  text-align: center;
}

.content-hub-collection-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.content-hub-collection-empty {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-style: italic;
}

/* Card action — remove from collection */
.content-hub-card-action--remove {
  font-size: 0.7rem;
  color: var(--text-secondary, rgba(255, 255, 255, 0.5));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm, 4px);
  padding: 2px 6px;
}

.content-hub-card-action--remove:hover {
  color: var(--color-error);
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.08);
}

/* Collection checklist in add-to-collection modal */
.content-hub-collection-checklist {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs, 4px);
  padding: var(--spacing-sm, 8px);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md, 8px);
  max-height: 200px;
  overflow-y: auto;
}

.content-hub-collection-checklist-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs, 4px);
  padding: 4px var(--spacing-sm, 8px);
  border-radius: var(--radius-sm, 4px);
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.15s;
}

.content-hub-collection-checklist-option:hover {
  background: rgba(234, 179, 8, 0.08);
}

/* ---------- Light theme — collection overrides ---------- */
[data-theme="light"] .content-hub-collection-section {
  border-top-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

[data-theme="light"] .content-hub-card-action--remove {
  color: var(--text-secondary, rgba(0, 0, 0, 0.5));
  border-color: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .content-hub-card-action--remove:hover {
  color: var(--color-error);
  border-color: rgba(220, 38, 38, 0.4);
  background: rgba(220, 38, 38, 0.06);
}

[data-theme="light"] .content-hub-collection-checklist {
  background: var(--bg-secondary, #f5f5f5);
  border-color: var(--border-color, rgba(0, 0, 0, 0.08));
}

/* ==========================================================================
   Story 8.4 — Content Sharing & Permissions
   ========================================================================== */

/* ---------- Sharing badge on content cards ---------- */
.content-hub-card-sharing-badge {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 0.7rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 9999px;
  white-space: nowrap;
}

.content-hub-card-sharing-badge--public {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success-text, #4ade80);
}

.content-hub-card-sharing-badge--shared {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-sky-500, #0ea5e9);
}

[data-theme="light"] .content-hub-card-sharing-badge--public {
  background: rgba(34, 197, 94, 0.1);
  color: var(--color-success-text);
}

[data-theme="light"] .content-hub-card-sharing-badge--shared {
  background: rgba(59, 130, 246, 0.1);
  color: #1d4ed8;
}

/* ---------- Share dialog radio options ---------- */
.content-hub-share-radio {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.75rem 0;
}

.content-hub-share-radio-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md, 0.5rem);
  cursor: pointer;
  font-size: 0.875rem;
  transition: background 0.15s ease;
}

.content-hub-share-radio-option:hover {
  background: var(--bg-hover, rgba(255, 255, 255, 0.06));
}

/* ---------- Share dialog role checkboxes ---------- */
.content-hub-share-roles-section {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
}

.content-hub-share-roles-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: var(--bg-secondary, #171717);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
  border-radius: var(--radius-md, 0.5rem);
}

.content-hub-share-roles-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-md, 0.5rem);
  cursor: pointer;
  font-size: 0.875rem;
}

.content-hub-share-roles-option:hover {
  background: var(--bg-hover, rgba(255, 255, 255, 0.06));
}

/* ---------- Share dialog item name ---------- */
.content-hub-share-item-name {
  font-size: 0.875rem;
  color: var(--text-secondary, rgba(255, 255, 255, 0.6));
  font-style: italic;
  margin-bottom: 0.75rem;
}

/* ---------- Access Denied (403) page ---------- */
.access-denied-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 2rem;
}

.access-denied-content {
  text-align: center;
  max-width: 420px;
}

.access-denied-code {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-danger, #ef4444);
  margin: 0 0 0.5rem;
  letter-spacing: -2px;
}

.access-denied-message {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--text-primary, #ffffff);
}

.access-denied-description {
  font-size: 0.875rem;
  color: var(--text-secondary, rgba(255, 255, 255, 0.6));
  margin: 0 0 1.5rem;
  line-height: 1.5;
}

.access-denied-link {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md, 0.5rem);
  background: var(--accent, #facc15);
  color: var(--accent-text, #171717);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  transition: opacity 0.15s ease;
}

.access-denied-link:hover {
  opacity: 0.85;
}

[data-theme="light"] .access-denied-message {
  color: var(--text-primary, #111111);
}

[data-theme="light"] .access-denied-description {
  color: var(--text-secondary, rgba(0, 0, 0, 0.5));
}

[data-theme="light"] .content-hub-share-roles-checklist {
  background: var(--bg-secondary, #f5f5f5);
  border-color: var(--border-color, rgba(0, 0, 0, 0.08));
}