/**
 * Materials browser — standalone styles for LK hub and reuse outside editor chrome.
 * Extracted from main.css (tree + cards + modals).
 */

:root {
  --bg: #f8f8f8;
  --surface: #fff;
  --border: #e0e0e0;
  --text: #222;
  --muted: #666;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --accent-light: #ccfbf1;
  --highlight: #f5f5f5;
  --radius: 4px;
  --shell-bg: #f8f8f8;
  --shell-surface: #ffffff;
  --shell-border: #e0e0e0;
  --shell-text: #222;
  --shell-text-muted: #666;
  --shell-highlight: #f5f5f5;
  --shell-accent: #0d9488;
  --shell-accent-hover: #0f766e;
  --shell-surface-muted: #fafafa;
  --shell-hover: #f0f0f0;
  --shell-border-subtle: #e5e5e5;
  --shell-border-light: #ddd;
  --shell-border-faint: #eee;
  --shell-icon-muted: #999;
  --shell-text-subtle: #555;
  --shell-control-active: #333;
  --shell-danger-text: #c00;
  --shell-dropdown-z: var(--z-dropdown);
  --radius-shell: 8px;
  --radius-shell-lg: 12px;
  --font-shell: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-ui: cubic-bezier(0.23, 1, 0.32, 1);
}

.materials-browser-hub {
  --materials-card-title-size: 13px;
  --materials-card-date-size: 10px;
  --materials-card-title-weight: 500;
  --materials-card-title-line-height: 1.3;
  --materials-tree-font-size: 15px;
  --materials-modal-title-size: 18px;
}

/* Minimal shared modal / form primitives used by materials browser */
.design-modal-overlay {
  z-index: var(--z-overlay);
}
.design-modal-overlay[aria-hidden="false"] {
  display: flex;
}
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 22, 0.42);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
}
.modal-overlay[aria-hidden="false"] {
  display: flex;
}
.design-modal {
  background: var(--shell-surface);
  border: 1px solid var(--shell-border);
  border-radius: var(--radius-shell-lg);
  font-family: var(--font-shell);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.35);
  max-width: 1200px;
  width: 90%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.design-modal > .design-modal-header {
  flex-shrink: 0;
}
.design-modal > .design-modal-body {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.design-modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  color: var(--shell-text-muted);
  border-radius: var(--radius-shell);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s var(--ease-ui), color 0.15s var(--ease-ui);
}
.design-modal-close:hover {
  color: var(--shell-text);
  background: var(--shell-highlight);
}
.design-input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--shell-border-light);
  border-radius: 4px;
  font-size: 13px;
  font-family: inherit;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  box-sizing: border-box;
}
.design-save-btn {
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-shell);
  background: var(--shell-accent);
  color: #fff;
  border: 1px solid var(--shell-accent);
  border-radius: var(--radius-shell);
  cursor: pointer;
  transition: background 0.15s var(--ease-ui), border-color 0.15s var(--ease-ui), transform 160ms var(--ease-out);
}
.design-save-btn:hover {
  background: var(--shell-accent-hover);
  border-color: var(--shell-accent-hover);
}
.design-save-btn:active {
  transform: scale(0.97);
  background: var(--accent-hover);
}
.design-save-btn-ghost {
  background: var(--shell-surface);
  color: var(--shell-text);
  border: 1px solid var(--shell-border);
}
.design-save-btn-ghost:hover {
  background: var(--shell-highlight);
  border-color: var(--shell-border-light);
}
.design-save-btn-ghost:active {
  background: var(--shell-border-faint);
}
.design-save-btn-danger {
  background: var(--shell-danger-text);
  color: #fff;
  border-color: var(--shell-danger-text);
}
.materials-import-menu-btn {
  transition: transform 160ms var(--ease-out), background 150ms var(--ease-out), border-color 150ms var(--ease-out), color 150ms var(--ease-out), opacity 150ms var(--ease-out);
}
.materials-import-menu-btn:active {
  transform: scale(0.97);
  opacity: 1;
}

/* Модалка «Новый прототип» — компактная */
.design-modal-new-material {
  max-width: 400px;
  width: 100%;
}
.design-modal-new-material .design-modal-header {
  padding: 10px 16px;
}
.design-modal-new-material .design-modal-title {
  font-size: 16px;
}
.design-modal-new-material .design-modal-body {
  display: flex;
  flex-direction: column;
  grid-template-columns: unset;
  gap: 0;
  padding: 12px 16px 16px;
  min-height: 0;
}
.design-modal-new-material .design-form {
  gap: 10px;
}
.design-modal-new-material .design-modal-footer {
  margin-top: 8px;
  padding-top: 0;
}

.materials-delete-confirm-text {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--shell-control-active);
}
.design-modal-sm {
  max-width: 420px;
  width: 90%;
}
.design-modal-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 4px;
}
#materialsDeleteConfirmOverlay[aria-hidden="false"],
#appConfirmOverlay[aria-hidden="false"] {
  z-index: var(--z-overlay-confirm);
}

/* Прототипы: крупная модалка, постраничная навигация, карточки */
.design-modal.design-modal-materials {
  max-width: min(1400px, calc(100vw - 40px));
  width: min(1400px, calc(100vw - 40px));
  min-width: 0;
  flex-shrink: 0;
}
.design-modal.design-modal-materials > .design-modal-body.materials-modal-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
@media (min-width: 701px) {
  .design-modal.design-modal-materials {
    height: min(90vh, 880px);
    max-height: min(90vh, 880px);
  }
}
@media (min-width: 900px) {
  .design-modal-materials .materials-two-cols {
    grid-template-columns: 288px 1fr;
  }
}
.materials-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 20px;
  border-bottom: 1px solid var(--shell-border-subtle);
}
.materials-modal-title {
  margin: 0;
  font-size: var(--materials-modal-title-size, 18px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-shell);
  color: var(--shell-text);
}
.materials-header-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.materials-import-wrap {
  position: relative;
  flex-shrink: 0;
}
.materials-import-dropdown {
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
  min-width: 220px;
  z-index: 50;
}
.materials-import-menu-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: var(--surface);
  cursor: pointer;
  font-family: inherit;
}
.materials-import-menu-btn:hover {
  background: var(--highlight);
  border-color: var(--border);
}
.materials-modal-header .design-modal-close {
  flex-shrink: 0;
}
.materials-modal-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}
@media (min-width: 701px) {
  .design-modal-materials .materials-modal-body {
    min-height: 400px;
  }
}
.materials-btn-add {
  flex-shrink: 0;
  font-size: 13px;
}
.materials-nav-actions .design-save-btn.materials-btn-add.materials-primary {
  background: var(--accent);
  color: #fff;
  border: none;
}
.materials-nav-actions .design-save-btn.materials-btn-add.materials-primary:hover {
  background: var(--accent-hover);
}
.materials-nav-actions .design-save-btn.materials-btn-add.materials-primary:active {
  background: var(--accent-hover);
}
.materials-two-cols {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  flex: 1;
  min-height: 0;
}
.materials-panel-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 8px;
  border-right: 1px solid var(--shell-border-faint);
  min-height: 0;
  min-width: 0;
}
.materials-panel-left .materials-tree {
  flex: 1;
  min-height: 0;
}
.materials-tree-footer {
  flex-shrink: 0;
  padding-top: 4px;
}
.materials-btn-add-tree {
  width: 100%;
  justify-content: center;
  min-height: 44px;
}
.materials-panel-right {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  min-width: 0;
}
.materials-nav-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  flex-wrap: wrap;
  row-gap: 8px;
}
.materials-nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.design-modal-materials .materials-nav-row .design-save-btn {
  min-height: 44px;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.materials-nav-danger {
  margin-left: 16px;
  flex-shrink: 0;
  border-left: 1px solid var(--shell-border-light);
  padding-left: 10px;
}
.materials-nav-danger[hidden] {
  display: none !important;
}
.materials-nav-danger:empty {
  border: none;
  padding: 0;
}
.materials-nav-row .materials-level-settings {
  white-space: nowrap;
}
.design-modal-materials .materials-nav-row .design-save-btn[hidden] {
  display: none !important;
}
.materials-nav-group[hidden] {
  display: none;
}
.materials-icon-svg {
  display: block;
  flex-shrink: 0;
  pointer-events: none;
}
.materials-btn-icon {
  flex-shrink: 0;
  min-width: 44px;
  min-height: 44px;
  width: 44px;
  height: 44px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-sizing: border-box;
}
/* Текст, не иконка: размеры от .design-save-btn + min-height ряда; квадрат только у .materials-btn-icon */
.materials-btn-delete {
  flex-shrink: 0;
  white-space: nowrap;
  color: var(--shell-danger-text);
}
.materials-btn-delete:hover {
  color: var(--shell-danger-text);
}
.design-modal-materials .materials-btn-icon:focus-visible,
.design-modal-materials .materials-btn-delete:focus-visible,
.design-modal-materials .materials-card-delete:focus-visible,
.design-modal-materials .materials-card-settings:focus-visible,
.design-modal-materials .materials-import-menu-btn:focus-visible,
.design-modal-materials #materialsBtnImportToggle:focus-visible {
  outline: 2px solid var(--accent, #0d9488);
  outline-offset: 2px;
}
.materials-breadcrumb-wrap {
  flex: 1;
  min-width: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  overflow: hidden;
}
.materials-breadcrumb {
  font-size: 13px;
  font-weight: 600;
  color: var(--text, #111);
  flex: 0 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.materials-breadcrumb-hint {
  font-size: 12px;
  font-weight: 400;
  color: var(--muted, #888);
  white-space: nowrap;
  flex-shrink: 0;
}
.materials-breadcrumb-hint[hidden] {
  display: none !important;
}
.materials-search-wrap {
  flex: 1 1 200px;
  min-width: 140px;
  max-width: 420px;
}
.materials-search-inline {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: 6px 10px;
  font-size: 13px;
}
@media (max-width: 640px) {
  .materials-search-wrap {
    flex: 1 1 100%;
    max-width: none;
    order: 4;
  }
}
.materials-context-line {
  margin: -4px 0 4px;
  padding: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text, #222);
  line-height: 1.35;
  flex-shrink: 0;
}
.materials-context-line[hidden] {
  display: none !important;
}
.materials-list-add-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.materials-add-wrap {
  position: relative;
  flex-shrink: 0;
}
.materials-add-dropdown {
  display: flex;
  gap: 4px;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  z-index: 10;
  background: var(--surface);
  border: 1px solid var(--shell-border-light);
  border-radius: 4px;
  padding: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.materials-add-dropdown[hidden] {
  display: none;
}
.materials-add-dropdown button:not(.materials-import-menu-btn) {
  padding: 6px 10px;
  font-size: 12px;
  border: 1px solid var(--shell-border-light);
  border-radius: 4px;
  background: var(--surface);
  cursor: pointer;
  transition: background 150ms var(--ease-out);
}
.materials-add-dropdown button:not(.materials-import-menu-btn):hover {
  background: var(--highlight);
}
.materials-cards-empty-hint {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted, #666);
  max-width: 32em;
}
.materials-card-external {
  border-style: dashed;
}
.materials-card-external-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted, #666);
  line-height: 1.2;
  margin: -2px 0 4px;
  flex-shrink: 0;
  max-width: 100%;
  text-align: center;
}
.materials-btn-space-settings {
  flex-shrink: 0;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.materials-space-settings-label {
  font-size: 12px;
  font-weight: 500;
}
.materials-panel-left .materials-tree {
  display: block;
}
.materials-panel-left .materials-tree > li {
  display: block;
}
.materials-panel-left .materials-tree-children {
  display: block;
}
.materials-panel-left .materials-tree-children > li {
  display: block;
}
.materials-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-gutter: stable;
  border: 1px solid var(--shell-border-subtle);
  border-radius: 6px;
  background: var(--shell-surface-muted);
}
.materials-tree-item {
  padding: 8px 10px;
  cursor: pointer;
  font-size: var(--materials-tree-font-size, 15px);
  border: none;
  background: none;
  width: 100%;
  min-width: 0;
  min-height: 40px;
  text-align: left;
  font-family: inherit;
  color: var(--shell-control-active);
  border-radius: 6px;
  margin: 1px 3px;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.materials-tree-row {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.materials-tree-item:hover {
  background: var(--shell-border-faint);
}
.materials-tree-item[aria-selected="true"] {
  background: rgba(13, 148, 136, 0.06);
  color: var(--accent);
}
.materials-tree-toggle {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  color: var(--muted);
  user-select: none;
  border-radius: 6px;
}
.materials-tree-toggle-spacer {
  visibility: hidden;
  pointer-events: none;
  cursor: default;
}
.materials-tree-toggle:hover {
  color: var(--accent);
  background: rgba(13, 148, 136, 0.08);
}
.materials-tree-toggle-spacer:hover {
  color: inherit;
  background: transparent;
}
.materials-tree-item.collapsed .materials-tree-children {
  display: none;
}
.materials-tree-icon {
  font-size: 1.5em;
  flex-shrink: 0;
  color: var(--accent);
  line-height: 1;
}
.materials-tree-row .materials-tree-label {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  overflow-wrap: normal;
  word-break: normal;
  font-size: inherit;
  line-height: 1.35;
}
.materials-tree-space-settings {
  flex-shrink: 0;
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 6px;
  border: none;
  background: transparent;
  border-radius: var(--radius, 4px);
  color: var(--text-muted, #666);
  cursor: pointer;
}
.materials-tree-space-settings:hover {
  color: var(--accent, #0d9488);
  background: rgba(13, 148, 136, 0.08);
}
.materials-tree-space-settings .materials-icon-svg {
  display: block;
}
.materials-tree-children {
  list-style: none;
  margin: 0;
  padding-left: 8px;
  display: block;
}
.materials-tree-children .materials-tree-children {
  padding-left: 8px;
}
/* Align «Материалы пространства» icon with parent space folder column */
.materials-tree-item--space-orphans {
  margin-left: -8px;
  width: calc(100% + 8px);
  box-sizing: border-box;
}
.materials-tree > li,
.materials-tree-children > li {
  display: block;
}
.materials-tree-children .materials-tree-item {
  margin: 1px 3px;
}
.materials-cards-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}
.materials-insertion-line {
  display: none;
  position: absolute;
  width: 3px;
  background: var(--accent, #0d9488);
  border-radius: 2px;
  pointer-events: none;
  z-index: 10;
  top: 0;
  bottom: 0;
}
.materials-insertion-line.visible {
  display: block;
}
.materials-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 16px;
  flex: 1;
  min-height: 0;
  min-width: 0;
  overflow-x: hidden;
  overflow-y: auto;
  align-content: start;
  scrollbar-gutter: stable;
}
@media (min-width: 1100px) {
  .design-modal-materials .materials-cards-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}
@media (min-width: 901px) and (max-width: 1099px) {
  .design-modal-materials .materials-cards-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}
.materials-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 144px;
  height: 144px;
  padding: 16px;
  padding-top: 36px;
  border: 1px solid var(--shell-border-subtle);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  text-align: center;
  box-sizing: border-box;
  overflow: hidden;
  transition: background 150ms var(--ease-out), border-color 150ms var(--ease-out);
}
.materials-card:hover {
  background: var(--highlight);
  border-color: var(--shell-border-light);
}
.materials-card-icon {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 6px;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.materials-card-icon .materials-icon-svg {
  width: 40px;
  height: 40px;
}
.materials-card-title {
  font-size: var(--materials-card-title-size, 13px);
  font-weight: var(--materials-card-title-weight, 500);
  word-break: break-word;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: var(--materials-card-title-line-height, 1.3);
  height: 2.6em;
  flex-shrink: 0;
}
.materials-card-date {
  font-size: var(--materials-card-date-size, 10px);
  color: #999;
  margin-top: 0;
  flex: 1 1 auto;
  min-width: 0;
  line-height: 1.2;
  max-height: 1.4em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: left;
}
.materials-card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  width: 100%;
  margin-top: auto;
  flex-shrink: 0;
  min-height: 28px;
}
.materials-card-footer .materials-card-menu-btn {
  position: static;
  top: auto;
  right: auto;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  margin-left: auto;
  opacity: 1;
  color: var(--muted, #71717a);
}
.materials-card-actions {
  margin-top: auto;
  flex-shrink: 0;
}
.materials-card-settings {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  font-size: 14px;
  color: #666;
  background: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  z-index: 2;
  box-sizing: border-box;
}
.materials-card-settings:hover {
  color: var(--accent);
  opacity: 1;
  background: rgba(13, 148, 136, 0.08);
}
.materials-card-menu-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  color: #52525b;
  z-index: 3;
  opacity: 0.85;
}
.materials-card-menu-btn:hover {
  background: rgba(13, 148, 136, 0.08);
  color: var(--accent, #0d9488);
}
.materials-card-delete {
  position: static;
  width: 28px;
  height: 28px;
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  font-size: 13px;
  color: var(--shell-danger-text);
  background: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  z-index: 2;
  flex-shrink: 0;
  box-sizing: border-box;
}
.materials-card:hover .materials-card-delete {
  opacity: 1;
}
.materials-card-delete:hover {
  color: var(--shell-danger-text);
  background: rgba(200, 0, 0, 0.1);
}
.materials-tree-item.materials-tree-drop-valid {
  background: transparent;
}
.materials-tree-item.materials-tree-drop-valid > .materials-tree-row {
  background: var(--accent, #0d9488);
  color: #fff;
  border-radius: 6px;
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.22);
}
.materials-tree-item.materials-tree-drop-valid > .materials-tree-row .materials-tree-toggle,
.materials-tree-item.materials-tree-drop-valid > .materials-tree-row .materials-tree-icon {
  color: #fff;
}
.materials-card.materials-card-drop-valid {
  background: rgba(13, 148, 136, 0.14);
  outline: 3px solid var(--accent, #0d9488);
  outline-offset: -3px;
  box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.12);
}
.materials-card-dragging {
  opacity: 0.6;
}
.materials-cards-empty {
  grid-column: 1 / -1;
  color: #999;
  text-align: center;
  padding: 24px;
}
.materials-date {
  font-size: 11px;
  color: #999;
  white-space: nowrap;
}
@media (max-width: 960px) {
  .materials-cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 768px) {
  .materials-modal-body {
    grid-template-columns: 1fr;
  }
  .materials-panel-left {
    border-right: none;
    border-bottom: 1px solid var(--shell-border-faint);
    padding-right: 0;
    padding-bottom: 16px;
  }
}

/* Trash */
.materials-card.materials-card-trash {
  cursor: default;
}
.materials-card-trash .materials-card-icon {
  color: var(--shell-icon-muted, #888);
}
.materials-card-trash-restore,
.materials-card-trash-purge {
  position: absolute;
  top: 4px;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  font-size: 14px;
  background: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  z-index: 2;
  transition: opacity 0.15s ease;
  box-sizing: border-box;
}
.materials-card-trash-restore {
  left: 4px;
  color: var(--accent);
}
.materials-card-trash-purge {
  right: 4px;
  color: var(--shell-danger-text);
}
.materials-card-trash:hover .materials-card-trash-restore,
.materials-card-trash:hover .materials-card-trash-purge {
  opacity: 1;
}
.materials-card-trash-restore:hover {
  background: rgba(13, 148, 136, 0.08);
}
.materials-card-trash-purge:hover {
  color: var(--shell-danger-text);
  background: rgba(200, 0, 0, 0.1);
}
.materials-trash-toolbar {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.materials-trash-toolbar[hidden] {
  display: none !important;
}
.materials-tree-trash .materials-tree-icon {
  display: inline-flex;
  align-items: center;
  color: var(--design-muted, #64748b);
}
.materials-tree-trash .materials-tree-label {
  color: var(--design-muted, #64748b);
}
.materials-tree-item[aria-selected="true"].materials-tree-trash .materials-tree-label {
  color: inherit;
}

/* Mobile layout for materials browser */
@media (max-width: 700px) {
  .materials-nav-row {
    flex-wrap: wrap;
    gap: 8px;
    min-width: 0;
  }
  .materials-nav-actions {
    flex-wrap: wrap;
    min-width: 0;
  }
  .materials-panel-right {
    min-width: 0;
  }
  .materials-cards-wrap {
    min-width: 0;
  }
  .materials-cards-grid {
    min-width: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .materials-search-inline {
    min-width: 0;
    flex: 1 1 80px;
  }
  .materials-modal-body .materials-two-cols {
    min-width: 0;
  }
  .design-modal,
  .design-modal-materials,
  .design-modal-new-material {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }
  .design-modal-materials {
    min-width: 0;
  }
  .materials-modal-body {
    min-height: 320px;
  }
  .design-modal.design-modal-materials > .design-modal-body.materials-modal-body {
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .design-modal-materials .materials-two-cols {
    grid-template-columns: 1fr;
    flex: 0 0 auto;
    min-height: auto;
    height: auto;
  }
  .design-modal-materials .materials-panel-left,
  .design-modal-materials .materials-panel-right {
    overflow: visible;
    min-height: auto;
  }
  .design-modal-materials .materials-panel-left .materials-tree,
  .design-modal-materials .materials-tree {
    flex: 0 0 auto;
    overflow: visible;
    height: auto;
    max-height: none;
  }
  .design-modal-materials .materials-cards-wrap {
    overflow: visible;
    flex: 0 0 auto;
    min-height: auto;
  }
  .design-modal-materials .materials-cards-grid {
    overflow: visible;
    flex: 0 0 auto;
    height: auto;
    min-height: auto;
  }
  /* Hub keeps independent scroll for tree + cards on narrow viewports.
     Prefixed with body.lk-body--cabinet so hub rules (0,5,0) beat
     same-specificity modal rules (0,4,0) regardless of source order. */
  body.lk-body--cabinet .materials-browser-hub .design-modal.design-modal-materials > .design-modal-body.materials-modal-body {
    overflow: hidden;
  }
  body.lk-body--cabinet .materials-browser-hub .materials-two-cols {
    flex: 1 1 auto;
    min-height: 0;
    height: auto;
    overflow: hidden;
  }
  body.lk-body--cabinet .materials-browser-hub .materials-panel-left,
  body.lk-body--cabinet .materials-browser-hub .materials-panel-right {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
  }
  body.lk-body--cabinet .materials-browser-hub .materials-panel-left .materials-tree,
  body.lk-body--cabinet .materials-browser-hub .materials-tree {
    flex: 1 1 auto;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    height: auto;
    max-height: none;
  }
  body.lk-body--cabinet .materials-browser-hub .materials-cards-wrap {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex: 1 1 auto;
    min-height: 0;
  }
  body.lk-body--cabinet .materials-browser-hub .materials-cards-grid {
    overflow-x: hidden;
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
    height: auto;
  }
  .materials-panel-left {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-right: 0;
    padding-bottom: 12px;
  }
}

/* Hub shell on LK */
.lk-main .wrap.lk-wrap-wide,
.lk-cabinet-wide-wrap {
  max-width: none;
}
.lk-projects-browser.materials-browser-hub {
  border: 1px solid var(--border, #e7e5e4);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.materials-browser-hub #materialsBrowserMount {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.materials-browser-hub .materials-hub-overlay,
.materials-browser-hub #materialsModalOverlay.materials-hub-overlay {
  position: relative;
  display: flex !important;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  flex: 1;
  min-height: 0;
  opacity: 1 !important;
  pointer-events: auto;
  background: transparent;
  inset: auto;
  z-index: 1;
  padding: 0;
  border: none;
  box-shadow: none;
}
.materials-browser-hub .design-modal-materials {
  position: relative;
  max-width: none;
  width: 100%;
  height: 100%;
  max-height: none;
  flex: 1;
  min-height: 0;
  box-shadow: none !important;
  border: none !important;
  border-radius: 0 !important;
  background: transparent;
}
/* Hub: title/close не нужны — region уже с aria-label; иначе пустой padding + border */
.materials-browser-hub .materials-modal-header,
.lk-projects-browser.materials-browser-hub .materials-modal-header,
.lk-projects-browser .materials-hub-overlay .materials-modal-header {
  display: none !important;
}
.materials-browser-hub .materials-header-toolbar {
  margin-left: auto;
}
.materials-browser-hub .materials-modal-body {
  padding: 6px 10px 10px;
  min-height: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.materials-browser-hub .design-modal.design-modal-materials > .design-modal-body.materials-modal-body {
  min-height: 0;
  overflow: hidden;
}
.materials-browser-hub .materials-two-cols {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.materials-browser-hub .materials-panel-left,
.materials-browser-hub .materials-panel-right {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
.materials-browser-hub .materials-panel-left .materials-tree,
.materials-browser-hub .materials-tree {
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
}
.materials-browser-hub .materials-cards-wrap {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
body.lk-body--cabinet .materials-browser-hub .materials-cards-grid {
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
}
.materials-cards-grid.materials-view-cards {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.materials-cards-grid.materials-view-icons {
  grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
  gap: 12px;
}
.materials-view-icons .materials-card {
  height: auto;
  min-height: 132px;
  padding: 28px 12px 10px;
}
.materials-view-icons .materials-card-project {
  padding-right: 4px;
  margin-bottom: 4px;
}
.materials-view-icons .materials-card-preview {
  display: none;
}
.materials-view-icons .materials-card-icon {
  margin-bottom: 4px;
}
.materials-view-icons .materials-card-title {
  height: auto;
  max-height: 2.6em;
  -webkit-line-clamp: 2;
  line-clamp: 2;
}
.materials-view-icons .materials-card-footer {
  margin-top: 6px;
}
.materials-card.materials-card--preview {
  /* Равная высота в ряду грида + слоты: шапка / body(центр) / футер */
  height: auto;
  min-height: 200px;
  align-self: stretch;
  align-items: stretch;
  padding: 12px 12px 10px;
}
.materials-card.materials-card--preview.materials-card--with-project {
  padding-top: 10px;
}
.materials-card-project {
  display: block;
  align-self: stretch;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0 4px;
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.35;
  max-height: 1.35em;
  color: #71717a;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}
/* Зона превью+подписи: занимает свободную высоту и центрирует содержимое */
.materials-card-body {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  gap: 6px;
}
.materials-card-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 76px;
  width: 100%;
  height: 76px;
  min-height: 76px;
  max-height: 76px;
  padding: 8px 10px;
  margin: 0;
  border-radius: 8px;
  background: #f4f4f5;
  color: #18181b;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.35;
  text-align: center;
  overflow: hidden;
  box-sizing: border-box;
}
.materials-card[data-type="section"] .materials-card-preview {
  background: #eef2ff;
  color: #1e3a8a;
}
.materials-card[data-type="project"] .materials-card-preview {
  background: #ecfdf5;
  color: #065f46;
}
.materials-card[data-type="material"] .materials-card-preview {
  background: #f4f4f5;
  color: #18181b;
}
/* Тип: мини-иконка в футере перед датой */
.materials-card-type {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  color: #71717a;
  box-shadow: none;
}
.materials-card-type-icon {
  display: inline-flex;
  width: 14px;
  height: 14px;
  align-items: center;
  justify-content: center;
  color: inherit;
}
.materials-card-type-icon .materials-icon-svg {
  width: 14px;
  height: 14px;
  display: block;
}
.materials-card-type--project { color: #047857; }
.materials-card-type--section { color: #4338ca; }
.materials-card-type--material { color: #52525b; }
.materials-card-preview-text {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  max-height: calc(1.35em * 3);
  margin: 0;
  text-align: center;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.materials-card--preview .materials-card-title {
  height: auto;
  max-height: 2.6em;
  margin: 0;
  flex-shrink: 0;
}
.materials-card--preview .materials-card-footer {
  margin-top: 0;
}
.materials-view-toggle {
  display: inline-flex;
  gap: 4px;
  margin-right: 8px;
}
.materials-view-toggle-btn[aria-pressed="true"] {
  background: var(--accent-light, #ccfbf1);
  color: var(--accent, #0d9488);
}

/* Non-hub modals inside LK («Новый материал», «Удалить?» etc).
   z-index 2200 — above LK overlays (1000, 1100), below editor confirms (1700 in hub). */
.lk-projects-browser .modal-overlay:not(.materials-hub-overlay) {
  position: fixed;
  inset: 0;
  z-index: var(--z-materials-trash);
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  padding: 1rem;
}
.lk-projects-browser .modal-overlay:not(.materials-hub-overlay)[aria-hidden="false"] {
  display: flex;
}
.lk-projects-browser .modal-overlay:not(.materials-hub-overlay) .design-modal {
  background: #fff;
  border-radius: 12px;
  max-width: 28rem;
  width: 100%;
  box-shadow: 0 16px 48px rgba(0,0,0,.2);
}
.lk-projects-browser .design-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid #e7e5e4;
}
.lk-projects-browser .design-modal-body { padding: 16px; }
.lk-projects-browser .design-modal-close {
  border: none;
  background: none;
  font-size: 1.4rem;
  cursor: pointer;
}
.lk-projects-browser .design-input {
  width: 100%;
  padding: 8px 10px;
  margin: 6px 0 12px;
  border: 1px solid #e7e5e4;
  border-radius: 8px;
  box-sizing: border-box;
}

/* Полка над сеткой: create · search · view · import — одна строка */
.materials-shelf {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--shell-border-subtle, #e7e5e4);
  box-sizing: border-box;
  min-width: 0;
}
.materials-shelf-create {
  display: inline-flex;
  gap: 6px;
  flex-shrink: 0;
}
.materials-shelf .design-save-btn,
.materials-shelf-search .materials-search-inline {
  box-sizing: border-box;
  height: 34px;
  min-height: 34px;
  padding-top: 0;
  padding-bottom: 0;
  font-size: 13px;
  line-height: 1.2;
}
.materials-shelf .design-save-btn {
  display: inline-flex;
  align-items: center;
  padding-left: 14px;
  padding-right: 14px;
}
.materials-shelf-search {
  position: relative;
  flex: 1 1 auto;
  min-width: 120px;
}
.materials-shelf-search .materials-search-inline {
  width: 100%;
  padding-left: 10px;
  padding-right: 36px;
}
.materials-search-clear {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted, #64748b);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}
.materials-search-clear:hover {
  background: var(--bg-hover, rgba(15, 23, 42, 0.06));
  color: var(--text, #0f172a);
}
.materials-search-clear[hidden] {
  display: none !important;
}
.materials-shelf-tools {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.materials-view-toggle-btn[aria-pressed="true"] {
  background: var(--accent-light, #ccfbf1);
  color: var(--accent, #0d9488);
  border-color: var(--accent, #0d9488);
}
.materials-nav-row .materials-level-settings {
  white-space: nowrap;
}
.materials-nav-danger {
  margin-left: 16px;
}
.materials-selection-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  margin: 0 0 8px;
  background: rgba(13, 148, 136, 0.08);
  border-radius: 8px;
  border: 1px solid rgba(13, 148, 136, 0.2);
}
.materials-selection-bar[hidden] {
  display: none !important;
}
.materials-selection-count {
  font-size: 13px;
  font-weight: 600;
  margin-right: auto;
}
.materials-selection-delete {
  margin-left: auto;
}
.materials-card-check {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 28px;
  height: 28px;
  border: none;
  background: rgba(255,255,255,0.92);
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
  z-index: 3;
  font-size: 14px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.materials-card:hover .materials-card-check,
.materials-card--selected .materials-card-check,
.materials-card-check[aria-pressed="true"] {
  opacity: 1;
}
.materials-card-menu-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  color: #52525b;
  z-index: 3;
  opacity: 0.85;
}
.materials-card-menu-btn:hover {
  background: rgba(13, 148, 136, 0.08);
  color: var(--accent, #0d9488);
}
.materials-card-menu {
  min-width: 220px;
  max-width: min(280px, calc(100vw - 16px));
  padding: 6px;
  background: #fff;
  border: 1px solid var(--shell-border-subtle, #e7e5e4);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.14);
}
.materials-card-menu[hidden] {
  display: none !important;
}
.materials-card-menu-item {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  color: var(--shell-control-active, #18181b);
}
.materials-card-menu-item:hover {
  background: var(--shell-highlight, #f5f5f4);
}
.materials-card-menu-sep {
  height: 1px;
  margin: 6px 4px;
  background: var(--shell-border-subtle, #e7e5e4);
}
.materials-card-menu-item--danger {
  color: var(--shell-danger-text, #b91c1c);
}
.materials-card-menu-item--danger:hover {
  background: rgba(185, 28, 28, 0.08);
  color: var(--shell-danger-text, #b91c1c);
}
.materials-card--selected {
  outline: 2px solid var(--accent, #0d9488);
  outline-offset: -2px;
}
.materials-card--just-created {
  outline: 2px solid var(--accent, #16a34a);
  outline-offset: -2px;
  animation: materials-card-created 2.4s ease-out;
}
@keyframes materials-card-created {
  0% { background: rgba(22, 163, 74, 0.18); }
  100% { background: transparent; }
}
.materials-browser-hub .materials-shelf {
  padding-left: 10px;
  padding-right: 10px;
  flex-shrink: 0;
}