/* Penelopa — neutral tool workspace.
   The visual language follows the DbcView reference: one semantic token layer
   drives light/dark themes, Atlas chrome and every panel. Structure comes from
   1px dividers, spacing and type weight; saturated fills are reserved for the
   brand mark, selection rails and the single primary action.

   Contrast contract (WCAG AA), same baseline as the reference:
   - body text >= 4.5:1, UI indicators >= 3:1 on their actual surface;
   - focus rings use --penelopa-focus, contrast-checked against surface,
     chrome and page background tokens;
   - every color is declared here as a --penelopa-* token or mapped to an
     --atlas-* override (ED-NF-009). */

:root {
  color-scheme: light dark;

  --penelopa-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  --penelopa-font-mono: "SFMono-Regular", "Cascadia Code", Consolas, "Liberation Mono", monospace;

  /* Surfaces and text — light */
  --penelopa-bg: #f6f7f9;
  --penelopa-surface: #ffffff;
  --penelopa-chrome: #fbfcfd;
  --penelopa-sunken: #f1f3f5;
  --penelopa-text: #1f2328;
  --penelopa-text-secondary: #57606a;
  --penelopa-text-muted: #6e7781;
  --penelopa-text-disabled: #8c959f;
  --penelopa-border: #d0d7de;
  --penelopa-divider: #e6e9ed;

  /* Interaction */
  --penelopa-accent: #0969da;
  --penelopa-accent-strong: #0757b8;
  --penelopa-on-accent: #ffffff;
  --penelopa-hover: #f2f4f7;
  --penelopa-selection: #e8f0fb;
  --penelopa-focus: #0969da;

  /* Feedback */
  --penelopa-danger: #cf222e;
  --penelopa-danger-bg: #fff1f0;
  --penelopa-danger-text: #a40e26;
  --penelopa-warning: #9a6700;
  --penelopa-warning-bg: #fff8c5;
  --penelopa-warning-text: #7d4e00;
  --penelopa-success: #1a7f37;
  --penelopa-success-bg: #e9f7ee;
  --penelopa-success-text: #116329;

  /* Drawing stage and effects */
  --penelopa-stage: #000000;
  --penelopa-checker-a: #d9d9d9;
  --penelopa-checker-b: #ffffff;
  --penelopa-scrollbar-thumb: #c9d1d9;
  --penelopa-scrollbar-thumb-hover: #b1b8c0;
  --penelopa-shadow-popover: 0 8px 24px rgb(13 17 23 / 22%);

  background: var(--penelopa-bg);
  color: var(--penelopa-text);
  font-family: var(--penelopa-font-sans);
  font-size: 16px;
  line-height: 1.45;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Surfaces and text — dark */
    --penelopa-bg: #0d1117;
    --penelopa-surface: #161b22;
    --penelopa-chrome: #161b22;
    --penelopa-sunken: #10151c;
    --penelopa-text: #e6edf3;
    --penelopa-text-secondary: #b1bac4;
    --penelopa-text-muted: #8b949e;
    --penelopa-text-disabled: #6e7681;
    --penelopa-border: #30363d;
    --penelopa-divider: #21262d;

    /* Interaction */
    --penelopa-accent: #58a6ff;
    --penelopa-accent-strong: #79b8ff;
    --penelopa-on-accent: #0d1117;
    --penelopa-hover: #21262d;
    --penelopa-selection: #1f3550;
    --penelopa-focus: #58a6ff;

    /* Feedback */
    --penelopa-danger: #ff7b72;
    --penelopa-danger-bg: #2d1214;
    --penelopa-danger-text: #ffb3ad;
    --penelopa-warning: #d29922;
    --penelopa-warning-bg: #2b2110;
    --penelopa-warning-text: #ffd580;
    --penelopa-success: #3fb950;
    --penelopa-success-bg: #0f2a19;
    --penelopa-success-text: #7ee787;

    /* Drawing stage and effects */
    --penelopa-stage: #000000;
    --penelopa-checker-a: #30363d;
    --penelopa-checker-b: #161b22;
    --penelopa-scrollbar-thumb: #484f58;
    --penelopa-scrollbar-thumb-hover: #6e7681;
    --penelopa-shadow-popover: 0 8px 24px rgb(1 4 9 / 60%);
  }
}

/* ---- 1. Layout skeleton ---- */

html,
body,
#app,
.penelopa-main,
.penelopa-shell,
.penelopa-shell > .atlas-v2-workspace {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  min-width: 20rem;
  background: var(--penelopa-bg);
  color: var(--penelopa-text);
  font-size: 0.8125rem;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--penelopa-accent);
  color: var(--penelopa-on-accent);
}

:focus-visible {
  outline: 2px solid var(--penelopa-focus);
  outline-offset: 2px;
}

#blazor-error-ui {
  display: none;
}

.penelopa-icon {
  flex: 0 0 auto;
  display: inline-block;
  vertical-align: middle;
  pointer-events: none;
}

.penelopa-loading {
  display: grid;
  min-height: 100%;
  place-items: center;
  background: var(--penelopa-bg);
  color: var(--penelopa-text-muted);
  font-size: 13px;
}

.penelopa-shell {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--penelopa-bg);
}

.penelopa-shell > .atlas-v2-workspace {
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
  grid-template-columns: minmax(0, 1fr);
}

/* ---- 2. Atlas chrome contract ---- */

.penelopa-shell .atlas-v2-workspace {
  --atlas-accent: var(--penelopa-accent);
  --atlas-surface: var(--penelopa-surface);
  --atlas-text: var(--penelopa-text);
  --atlas-splitter-size: 0.3rem;
  --atlas-splitter-hit-area: 0.25rem;
  --atlas-chrome-height: 2.125rem;
  --atlas-gap: 0.25rem;
  --atlas-padding-compact: 0.25rem 0.5rem;
  --atlas-radius: 4px;
  --atlas-radius-sm: 4px;
  --atlas-border-width: 1px;
  --atlas-focus-ring-width: 2px;
  --atlas-splitter-opacity: 1;
  --atlas-splitter-opacity-hover: 1;
  --atlas-splitter-opacity-focus: 1;
  --atlas-drop-highlight-alpha-soft: 12%;
  --atlas-drop-highlight-alpha-strong: 20%;
  --atlas-toolbar-divider-opacity: 0.5;
  --atlas-drag-preview-opacity: 0.98;
  --atlas-drag-preview-shadow: var(--penelopa-shadow-popover);
  --atlas-group-bg: var(--penelopa-surface);
  --atlas-chrome-bg: var(--penelopa-chrome);
  --atlas-tab-text: var(--penelopa-text-secondary);
  --atlas-tab-text-active: var(--penelopa-text);
  --atlas-tab-bg-active: var(--penelopa-surface);
  --atlas-tab-bg-hover: var(--penelopa-hover);
  --atlas-splitter-color: var(--penelopa-border);
  background: var(--penelopa-bg);
  color: var(--penelopa-text);
  font-family: var(--penelopa-font-sans);
}

.atlas-v2-top-toolbar,
.atlas-v2-status-bar {
  min-width: 0;
  overflow: hidden;
}

.atlas-v2-top-toolbar {
  background: var(--penelopa-chrome);
  border-bottom: 1px solid var(--penelopa-border);
}

.atlas-v2-status-bar {
  background: var(--penelopa-chrome);
  border-top: 1px solid var(--penelopa-border);
}

.penelopa-shell .atlas-v2-work-area {
  background: var(--penelopa-bg);
}

.penelopa-shell .atlas-v2-work-area,
.penelopa-shell .atlas-v2-split,
.penelopa-shell .atlas-v2-group,
.penelopa-shell .atlas-v2-content-stack,
.penelopa-shell .atlas-v2-content-outlet {
  min-width: 0;
  min-height: 0;
}

.penelopa-shell .atlas-v2-group {
  border: 1px solid var(--penelopa-border);
  border-radius: 4px;
  background: var(--penelopa-surface);
}

/* Document groups host an edge-to-edge GPU canvas. A rounded clip makes the
   canvas corner composite differently after a remount, so these groups stay
   square while tool groups keep the reference radius. */
.penelopa-shell .atlas-v2-group[data-atlas-group-id="docs-group"],
.penelopa-shell .atlas-v2-group[data-atlas-group-id="canvas-group"] {
  border-radius: 0;
}

.penelopa-shell .atlas-v2-panel-header,
.penelopa-shell .atlas-v2-tab-strip {
  min-height: 2.125rem;
  box-sizing: border-box;
  align-items: center;
  border-bottom: 1px solid var(--penelopa-divider);
  background: var(--penelopa-chrome);
  color: var(--penelopa-text-secondary);
  user-select: none;
}

.penelopa-shell .atlas-v2-panel-header {
  gap: 0.5rem;
  padding: 0 0.75rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.penelopa-shell .atlas-v2-item-icon:empty {
  display: none;
}

.penelopa-shell .atlas-v2-tab-strip {
  gap: 0.125rem;
  padding-inline: 0.375rem;
}

.penelopa-shell .atlas-v2-tab-strip [role="tab"] {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  min-height: 2.125rem;
  max-width: 15rem;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  padding: 0 0.75rem;
  background: transparent;
  color: var(--penelopa-text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.penelopa-shell .atlas-v2-tab-strip [role="tab"]:hover:not([aria-selected]) {
  background: var(--penelopa-hover);
  color: var(--penelopa-text);
}

.penelopa-shell .atlas-v2-tab-strip [role="tab"][aria-selected] {
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  box-shadow: inset 0 -2px 0 var(--penelopa-accent);
}

.penelopa-shell .atlas-v2-toolbar {
  width: 2.375rem;
  height: 100%;
  box-sizing: border-box;
  align-items: center;
  padding: 0.25rem 0;
  background: var(--penelopa-chrome);
}

.penelopa-shell .atlas-v2-toolbar[data-atlas-toolbar-side="inline-start"] {
  border-inline-end: 1px solid var(--penelopa-border);
}

.penelopa-shell .atlas-v2-toolbar[data-atlas-toolbar-side="inline-end"] {
  border-inline-start: 1px solid var(--penelopa-border);
}

.penelopa-shell .atlas-v2-toolbar-region {
  width: 100%;
}

.penelopa-shell .atlas-v2-toolbar button {
  width: 1.875rem;
  min-height: 0;
  margin: 0.125rem auto;
  overflow: hidden;
  border: 0;
  border-radius: 4px;
  padding: 0.5rem 0.1875rem;
  background: transparent;
  color: var(--penelopa-text-secondary);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.penelopa-shell .atlas-v2-toolbar button:hover {
  background: var(--penelopa-hover);
  color: var(--penelopa-text);
}

.penelopa-shell .atlas-v2-toolbar button[aria-selected] {
  background: var(--penelopa-selection);
  color: var(--penelopa-text);
  box-shadow: inset 2px 0 0 var(--penelopa-accent);
}

.penelopa-shell .atlas-v2-toolbar-divider {
  width: 1.25rem;
  margin: 0.25rem auto;
  border-block-start: 1px solid var(--penelopa-divider);
  opacity: 1;
}

.penelopa-shell .atlas-v2-toolbar-section-divider {
  display: none;
}

/* 4–5px split tracks with a 1px visual line and a wide pointer target. */
.penelopa-shell .atlas-v2-splitter {
  background: transparent;
  color: var(--penelopa-border);
  opacity: 1;
}

.penelopa-shell .atlas-v2-splitter::after {
  content: "";
  position: absolute;
  background: var(--penelopa-border);
}

.penelopa-shell .atlas-v2-split-inline > .atlas-v2-splitter::after {
  inset-block: 0;
  inset-inline-start: 50%;
  width: 1px;
}

.penelopa-shell .atlas-v2-split-block > .atlas-v2-splitter::after {
  inset-inline: 0;
  inset-block-start: 50%;
  height: 1px;
}

.penelopa-shell .atlas-v2-splitter:hover,
.penelopa-shell .atlas-v2-split[data-atlas-resizing="true"] > .atlas-v2-splitter {
  background: transparent;
}

.penelopa-shell .atlas-v2-splitter:hover::after,
.penelopa-shell .atlas-v2-split[data-atlas-resizing="true"] > .atlas-v2-splitter::after {
  background: var(--penelopa-accent);
}

.penelopa-shell .atlas-v2-splitter:focus-visible {
  outline: 2px solid var(--penelopa-focus);
  outline-offset: 0;
}

.penelopa-shell .atlas-v2-content-outlet:focus-visible {
  outline: 2px solid var(--penelopa-focus);
  outline-offset: -2px;
}

/* ---- 3. Top bar (46px) — identity, document history, primary action ---- */

.penelopa-topbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 2.875rem;
  box-sizing: border-box;
  padding: 0 0.75rem;
  background: var(--penelopa-chrome);
  color: var(--penelopa-text);
}

.penelopa-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.penelopa-brand-mark {
  display: grid;
  width: 1.625rem;
  height: 1.625rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 6px;
  background: var(--penelopa-accent);
  color: var(--penelopa-on-accent);
}

.penelopa-brand-title {
  overflow: hidden;
  color: var(--penelopa-text);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.penelopa-brand-subtitle {
  overflow: hidden;
  padding-inline-start: 0.5rem;
  border-inline-start: 1px solid var(--penelopa-divider);
  color: var(--penelopa-text-muted);
  font-size: 0.6875rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.penelopa-topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  margin-inline-start: auto;
}

.penelopa-topbar-divider {
  width: 1px;
  height: 1rem;
  margin: 0 0.375rem;
  background: var(--penelopa-divider);
}

.penelopa-icon-button {
  display: inline-grid;
  width: 1.875rem;
  height: 1.875rem;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 0;
  background: transparent;
  color: var(--penelopa-text-secondary);
  cursor: pointer;
}

.penelopa-icon-button:not(:disabled):hover {
  border-color: var(--penelopa-border);
  background: var(--penelopa-hover);
  color: var(--penelopa-text);
}

.penelopa-icon-button:disabled {
  color: var(--penelopa-text-disabled);
  cursor: default;
}

/* ---- 4. Status bar (26px) — live document, selection and track state ---- */

.penelopa-statusbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: 1.625rem;
  box-sizing: border-box;
  padding: 0 0.75rem;
  background: var(--penelopa-chrome);
  color: var(--penelopa-text-secondary);
  font-size: 0.6875rem;
  line-height: 1;
}

.penelopa-statusbar-message {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.penelopa-statusbar-items {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  max-width: 62%;
  margin-inline-start: auto;
  overflow: hidden;
  flex: 0 1 auto;
}

.penelopa-statusbar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  min-width: 0;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.penelopa-statusbar-item + .penelopa-statusbar-item {
  padding-inline-start: 0.625rem;
  border-inline-start: 1px solid var(--penelopa-divider);
}

.penelopa-statusbar-text {
  overflow: hidden;
  max-width: 18rem;
  text-overflow: ellipsis;
}

/* ---- 5. Shared action and feedback primitives ---- */

.penelopa-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  height: 1.75rem;
  box-sizing: border-box;
  border: 1px solid var(--penelopa-border);
  border-radius: 4px;
  padding: 0 0.625rem;
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.penelopa-action:hover:not(:disabled) {
  background: var(--penelopa-hover);
}

.penelopa-action:disabled {
  color: var(--penelopa-text-disabled);
  cursor: default;
}

.penelopa-action.is-primary {
  border-color: var(--penelopa-accent);
  background: var(--penelopa-accent);
  color: var(--penelopa-on-accent);
}

.penelopa-action.is-primary:hover:not(:disabled) {
  border-color: var(--penelopa-accent-strong);
  background: var(--penelopa-accent-strong);
}

.penelopa-action.is-ghost {
  border-color: transparent;
  background: transparent;
  color: var(--penelopa-text-secondary);
}

.penelopa-action.is-ghost:hover:not(:disabled) {
  background: var(--penelopa-hover);
  color: var(--penelopa-text);
}

.penelopa-action.is-small {
  height: 1.5rem;
  padding-inline: 0.5rem;
  font-size: 0.6875rem;
}

.penelopa-empty-state {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  max-width: 17.5rem;
  margin: auto;
  padding: 1.5rem 0.75rem;
  color: var(--penelopa-text-muted);
}

.penelopa-empty-state .penelopa-icon {
  color: var(--penelopa-text-disabled);
}

.penelopa-empty-title {
  margin: 0;
  color: var(--penelopa-text);
  font-size: 0.8125rem;
  font-weight: 600;
}

.penelopa-empty-hint {
  margin: 0;
  color: var(--penelopa-text-muted);
  font-size: 0.75rem;
  line-height: 1.5;
}

/* ---- 6. Workspace overlays (file drop and notices) ---- */

.penelopa-drop-overlay {
  position: absolute;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  border: 2px dashed var(--penelopa-accent);
  background: color-mix(in srgb, var(--penelopa-bg) 70%, transparent);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.12s ease, visibility 0.12s ease;
}

.penelopa-shell.penelopa-drop-active .penelopa-drop-overlay {
  opacity: 1;
  visibility: visible;
}

.penelopa-shell.penelopa-drop-active .penelopa-canvas-empty {
  opacity: 0;
  transition: opacity 0.12s ease;
}

.penelopa-drop-overlay-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.625rem 1rem;
  border: 1px solid var(--penelopa-border);
  border-radius: 6px;
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  box-shadow: var(--penelopa-shadow-popover);
  text-align: center;
}

.penelopa-drop-overlay-card strong {
  font-size: 0.8125rem;
  font-weight: 600;
}

.penelopa-drop-overlay-card span {
  color: var(--penelopa-text-muted);
  font-size: 0.75rem;
}

.penelopa-drop-rejection {
  position: absolute;
  z-index: 2100;
  top: 0.75rem;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: min(34rem, calc(100% - 2rem));
  padding: 0.25rem 0.25rem 0.25rem 0.625rem;
  border: 1px solid var(--penelopa-danger);
  border-radius: 4px;
  background: var(--penelopa-danger-bg);
  color: var(--penelopa-danger-text);
  box-shadow: var(--penelopa-shadow-popover);
  font-size: 0.75rem;
  transform: translateX(-50%);
}

.penelopa-drop-rejection > span {
  min-width: 0;
  overflow-wrap: anywhere;
}

/* ---- 7. Tools ---- */

.penelopa-tools {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  height: 100%;
  min-width: 0;
  min-height: 0;
  box-sizing: border-box;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 0.625rem 0.75rem 1.25rem;
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  font-size: 0.75rem;
}

.penelopa-tool-section {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.penelopa-tool-label {
  display: block;
  margin: 0;
  color: var(--penelopa-text-muted);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.penelopa-tool-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(6.5rem, 1fr));
  gap: 0.25rem;
}

.penelopa-tool-actions.is-align {
  grid-template-columns: repeat(auto-fit, minmax(4.75rem, 1fr));
}

.penelopa-tool-actions .penelopa-action {
  width: 100%;
  min-width: 0;
  overflow: hidden;
  padding-inline: 0.375rem;
  font-size: 0.75rem;
  text-overflow: ellipsis;
}

.penelopa-tool-hint {
  margin: 0;
  color: var(--penelopa-text-muted);
  font-size: 0.6875rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

/* A file input is visually merged into a button label; the input stays a
   1px focusable element so label clicks open the picker and Tab reaches it. */
.penelopa-file-button {
  position: relative;
  cursor: pointer;
}

.penelopa-file-button input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  border: 0;
  opacity: 0;
  overflow: hidden;
  cursor: pointer;
}

.penelopa-file-button:focus-within {
  outline: 2px solid var(--penelopa-focus);
  outline-offset: 2px;
}

.penelopa-file-button.is-disabled {
  color: var(--penelopa-text-disabled);
  cursor: not-allowed;
}

.penelopa-file-button.is-disabled:hover {
  background: var(--penelopa-surface);
}

.penelopa-file-button.is-disabled input[type="file"] {
  cursor: not-allowed;
}

.penelopa-tool-confirm {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.5rem 0.625rem;
  border: 1px solid var(--penelopa-border);
  border-radius: 4px;
  background: var(--penelopa-sunken);
}

.penelopa-tool-confirm .penelopa-tool-actions {
  grid-template-columns: repeat(auto-fit, minmax(5.5rem, 1fr));
}

/* Programmatic focus (import confirmation, status banner) must stay visible
   even when the preceding interaction was a pointer. */
.penelopa-tool-confirm .penelopa-action:focus,
.penelopa-tool-message:focus {
  outline: 2px solid var(--penelopa-focus);
  outline-offset: 1px;
}

.penelopa-tool-warning-list {
  margin: 0;
  padding-inline-start: 1rem;
  color: var(--penelopa-warning-text);
  font-size: 0.6875rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.penelopa-tool-message {
  display: flex;
  align-items: flex-start;
  gap: 0.375rem;
  margin: 0;
  padding: 0.375rem 0.5rem;
  border: 1px solid var(--penelopa-success);
  border-radius: 4px;
  background: var(--penelopa-success-bg);
  color: var(--penelopa-success-text);
  font-size: 0.6875rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.penelopa-tool-message.is-warning {
  border-color: var(--penelopa-warning);
  background: var(--penelopa-warning-bg);
  color: var(--penelopa-warning-text);
}

.penelopa-tool-message.is-error {
  border-color: var(--penelopa-danger);
  background: var(--penelopa-danger-bg);
  color: var(--penelopa-danger-text);
}

.penelopa-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
  pointer-events: none;
}

/* ---- 8. Explorer / primitive tree ---- */

.penelopa-tree {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-width: 0;
  min-height: 0;
  box-sizing: border-box;
  overflow: auto;
  padding: 0.375rem 0 0.75rem;
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  font-size: 0.75rem;
}

.penelopa-tree-list,
.penelopa-tree-children {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Astrea tree theme, shared by the editor and simulation trees. Every row
   keeps the dense workspace look while Astrea owns the ARIA tree behavior. */
.penelopa-tree-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.penelopa-tree-view.tree-container {
  --ast-tree-font-size: 0.75rem;
  --ast-tree-line-height: 1.45;
  --ast-tree-color-text: var(--penelopa-text);
  --ast-tree-node-height: 1.625rem;
  --ast-tree-color-hover: var(--penelopa-hover);
  --ast-tree-color-focus: var(--penelopa-hover);
  --ast-tree-color-active: transparent;
  --ast-tree-color-border: var(--penelopa-divider);
  --ast-tree-icon-size: 14px;
  --ast-tree-control-indent: 0px;
  --ast-tree-font-weight-bold: 600;
  outline-offset: -2px;
}

.penelopa-tree-view .tree-node {
  width: auto;
  min-width: 0;
  box-sizing: border-box;
  margin: 0 0.25rem;
  padding: 0 0.25rem;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
}

.penelopa-tree-view .tree-node:hover {
  background: var(--penelopa-hover);
}

.penelopa-tree-view .tree-node.selected,
.penelopa-tree-view .tree-node.selected:hover {
  background: var(--penelopa-selection);
  box-shadow: inset 2px 0 0 var(--penelopa-accent);
}

.penelopa-tree-view .tree-node-content {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
}

/* Astrea appends an empty flex filler span inside the node content; the
   content already flexes, so hide the filler and keep the badge at the end. */
.penelopa-tree-view .tree-node-content > span:last-child {
  display: none;
}

.penelopa-tree-view .tree-node-content__main {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  gap: 0.375rem;
  min-width: 0;
}

.penelopa-tree-view .tree-node-content__main.selected,
.penelopa-tree-view .tree-node-text.selected {
  background: transparent;
}

.penelopa-tree-view .tree-node-text {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  gap: 0.375rem;
  min-width: 0;
}

.penelopa-tree-view .penelopa-tree-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.penelopa-tree-view .tree-node.is-container .penelopa-tree-label {
  font-weight: 600;
}

.penelopa-tree-view .tree-node-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--penelopa-text-muted);
}

.penelopa-tree-view .tree-node-control {
  display: inline-flex;
  flex: 0 0 0.875rem;
  align-items: center;
  justify-content: center;
  width: 0.875rem;
  height: 1rem;
  color: var(--penelopa-text-muted);
}

.penelopa-tree-view .tree-node-control .tree-node-icon {
  width: 0.75rem;
  height: 0.75rem;
}

.penelopa-tree-view .tree-node.selected .tree-node-icon {
  color: var(--penelopa-accent);
}

.penelopa-tree-view .tree-node-content__slot {
  display: none;
}

.penelopa-tree-empty {
  margin: 0;
  color: var(--penelopa-text-muted);
  font-size: 0.6875rem;
  line-height: 1.5;
}

.penelopa-tree > .penelopa-empty-state {
  max-width: none;
  margin: 0;
  padding: 0.75rem;
}

/* ---- 9. Properties ---- */

.penelopa-properties {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  height: 100%;
  min-width: 0;
  min-height: 0;
  box-sizing: border-box;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 0.75rem;
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  font-size: 0.75rem;
}

.penelopa-properties-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-bottom: 0.625rem;
  border-bottom: 1px solid var(--penelopa-divider);
}

.penelopa-properties-type {
  color: var(--penelopa-text-muted);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.penelopa-properties-title {
  overflow-wrap: anywhere;
  color: var(--penelopa-text);
  font-family: var(--penelopa-font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
}

.penelopa-properties-hint {
  margin: 0;
  color: var(--penelopa-text-muted);
  font-size: 0.6875rem;
  line-height: 1.5;
}

.penelopa-properties-fields {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.penelopa-prop-field {
  min-width: 0;
}

.penelopa-properties .penelopa-prop-label {
  display: block;
  margin: 0 0 0.25rem;
  color: var(--penelopa-text-muted);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}

.penelopa-properties .penelopa-prop-input {
  display: block;
  width: 100%;
  min-width: 0;
  height: 1.625rem;
  box-sizing: border-box;
  border: 1px solid var(--penelopa-border);
  border-radius: 4px;
  padding: 0 0.4375rem;
  background: var(--penelopa-sunken);
  color: var(--penelopa-text);
  font-family: var(--penelopa-font-mono);
  font-size: 0.71875rem;
}

.penelopa-properties select.penelopa-prop-input {
  padding-inline: 0.25rem;
  font-family: var(--penelopa-font-sans);
}

/* Dense numeric fields: native spinners would overlap short values in the
   narrow color channels and add visual noise in a keyboard-first editor. */
.penelopa-properties .penelopa-prop-input[type="number"] {
  appearance: textfield;
  -moz-appearance: textfield;
}

.penelopa-properties .penelopa-prop-input[type="number"]::-webkit-outer-spin-button,
.penelopa-properties .penelopa-prop-input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.penelopa-properties .penelopa-prop-input:focus-visible {
  outline: 2px solid var(--penelopa-focus);
  outline-offset: 0;
}

.penelopa-properties .penelopa-prop-input.is-invalid {
  border-color: var(--penelopa-danger);
}

.penelopa-prop-error {
  margin-top: 0.25rem;
  color: var(--penelopa-danger-text);
  font-size: 0.6875rem;
  line-height: 1.4;
}

.penelopa-color-field {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
  min-inline-size: 0;
}

.penelopa-color-field > .penelopa-prop-label {
  padding: 0;
}

.penelopa-color-editor {
  display: flex;
  align-items: flex-end;
  gap: 0.375rem;
}

.penelopa-color-swatch {
  flex: none;
  width: 1.5rem;
  height: 1.625rem;
  box-sizing: border-box;
  border: 1px solid var(--penelopa-border);
  border-radius: 4px;
  overflow: hidden;
  background-color: var(--penelopa-checker-b);
  /* 半透明颜色下的棋盘格底纹 */
  background-image: repeating-conic-gradient(
    var(--penelopa-checker-a) 0% 25%,
    var(--penelopa-checker-b) 0% 50%);
  background-size: 8px 8px;
}

.penelopa-color-swatch.is-mixed {
  background-image: repeating-linear-gradient(
    45deg,
    var(--penelopa-checker-a) 0 4px,
    var(--penelopa-checker-b) 4px 8px);
}

.penelopa-color-swatch-fill {
  display: block;
  width: 100%;
  height: 100%;
}

.penelopa-color-channels {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
}

.penelopa-color-channel {
  min-width: 0;
}

.penelopa-color-channel-label {
  display: block;
  margin-bottom: 0.1875rem;
  color: var(--penelopa-text-muted);
  font-size: 0.5625rem;
  font-weight: 600;
  line-height: 1;
  text-align: center;
  text-transform: uppercase;
}

.penelopa-properties .penelopa-color-channel-input {
  padding: 0 0.125rem;
  text-align: center;
  font-size: 0.6875rem;
}

.penelopa-color-conflict {
  margin: 0.25rem 0 0;
  color: var(--penelopa-text-muted);
  font-size: 0.6875rem;
}

.penelopa-properties > .penelopa-empty-state {
  max-width: none;
  margin: 0;
  padding: 0.75rem 0;
}

/* ---- 10. Canvas ---- */

.penelopa-canvas-scroll {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  box-sizing: border-box;
  overflow: auto;
}

/* While a pointer drag is active, the browser must not hijack the gesture
   for touch scrolling; the class is toggled from the pointer layer. */
.penelopa-canvas-scroll.penelopa-dragging,
.penelopa-canvas.penelopa-dragging {
  touch-action: none;
}

/* The canvas fills its viewport; zoom/pan are handled by ViewTransform, so
   there is no content-sized scroll area. The surrounding scroll container
   only guards against transient layout overflow while the side docks
   resize. Pointer coordinates are measured from the inner canvas content
   origin, so borders and scrolling cannot offset hit testing. */
.penelopa-canvas {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  box-sizing: border-box;
  overflow: hidden;
  background: var(--penelopa-stage);
}

.penelopa-canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  background: var(--penelopa-stage);
}

/* The canvas is a focusable keyboard surface; keep the focus ring visible
   around the drawing area without changing its layout. */
.penelopa-canvas:focus-visible {
  outline: 2px solid var(--penelopa-focus);
  outline-offset: -2px;
}

.penelopa-canvas-fit {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 10;
}

.penelopa-canvas-fit:disabled {
  cursor: default;
}

/* Empty-canvas onboarding lives outside the pointer layer so its controls
   are never captured as drawing gestures. */
.penelopa-canvas-empty {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  pointer-events: none;
}

.penelopa-canvas-empty-card {
  max-width: 22rem;
  padding: 1.125rem 1.25rem;
  border: 1px solid var(--penelopa-border);
  border-radius: 6px;
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  box-shadow: var(--penelopa-shadow-popover);
  text-align: center;
  /* 卡片本体不拦截画布手势；只有示例按钮可交互，首次 Ctrl+滚轮仍能缩放。 */
  pointer-events: none;
}

.penelopa-canvas-empty-card > .penelopa-icon {
  color: var(--penelopa-accent);
}

.penelopa-canvas-empty-card h2 {
  margin: 0.375rem 0 0;
  font-size: 0.8125rem;
  font-weight: 600;
}

.penelopa-canvas-empty-card p {
  margin: 0.375rem 0 0;
  color: var(--penelopa-text-muted);
  font-size: 0.75rem;
  line-height: 1.5;
}

.penelopa-canvas-empty-card .penelopa-sample-button {
  margin-top: 0.75rem;
  pointer-events: auto;
}

.penelopa-canvas-empty-card .penelopa-canvas-empty-hint {
  font-size: 0.6875rem;
}

.penelopa-canvas-notice {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 9;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: calc(100% - 5rem);
  padding: 0.25rem 0.25rem 0.25rem 0.625rem;
  border: 1px solid var(--penelopa-success);
  border-radius: 4px;
  background: var(--penelopa-success-bg);
  color: var(--penelopa-success-text);
  box-shadow: var(--penelopa-shadow-popover);
  font-size: 0.6875rem;
  line-height: 1.4;
  pointer-events: none;
}

.penelopa-canvas-notice > span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.penelopa-canvas-notice .penelopa-icon {
  color: inherit;
}

.penelopa-canvas-notice button {
  pointer-events: auto;
}

.penelopa-canvas-notice.is-error {
  border-color: var(--penelopa-danger);
  background: var(--penelopa-danger-bg);
  color: var(--penelopa-danger-text);
}

.penelopa-canvas-notice.is-error .penelopa-icon {
  color: var(--penelopa-danger-text);
}

/* ---- 11. Scrollbars ---- */

.penelopa-canvas-scroll,
.penelopa-tools,
.penelopa-tree,
.penelopa-properties {
  scrollbar-width: thin;
  scrollbar-color: var(--penelopa-scrollbar-thumb) transparent;
}

.penelopa-canvas-scroll::-webkit-scrollbar,
.penelopa-tools::-webkit-scrollbar,
.penelopa-tree::-webkit-scrollbar,
.penelopa-properties::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.penelopa-canvas-scroll::-webkit-scrollbar-track,
.penelopa-tools::-webkit-scrollbar-track,
.penelopa-tree::-webkit-scrollbar-track,
.penelopa-properties::-webkit-scrollbar-track {
  background: transparent;
}

.penelopa-canvas-scroll::-webkit-scrollbar-thumb,
.penelopa-tools::-webkit-scrollbar-thumb,
.penelopa-tree::-webkit-scrollbar-thumb,
.penelopa-properties::-webkit-scrollbar-thumb {
  background: var(--penelopa-scrollbar-thumb);
  border: 2px solid transparent;
  border-radius: 5px;
  background-clip: padding-box;
}

.penelopa-canvas-scroll::-webkit-scrollbar-thumb:hover,
.penelopa-tools::-webkit-scrollbar-thumb:hover,
.penelopa-tree::-webkit-scrollbar-thumb:hover,
.penelopa-properties::-webkit-scrollbar-thumb:hover {
  background: var(--penelopa-scrollbar-thumb-hover);
  border: 2px solid transparent;
  border-radius: 5px;
  background-clip: padding-box;
}

.penelopa-canvas-scroll::-webkit-scrollbar-corner,
.penelopa-tools::-webkit-scrollbar-corner,
.penelopa-tree::-webkit-scrollbar-corner,
.penelopa-properties::-webkit-scrollbar-corner {
  background: transparent;
}

/* ---- 12. Narrow viewports ---- */

/* Below 900px the proportional tracks can be narrower than the 160px
   splitter minimum. Tighten spacing so add/align/group/property controls
   still fit without horizontal clipping while the canvas keeps the
   remaining width. */
@media (max-width: 900px) {
  .penelopa-tools,
  .penelopa-properties {
    padding: 0.5rem;
  }

  .penelopa-tools {
    gap: 0.75rem;
  }

  .penelopa-tool-actions {
    grid-template-columns: minmax(0, 1fr);
  }

  .penelopa-tool-actions.is-align {
    grid-template-columns: repeat(auto-fit, minmax(4.5rem, 1fr));
  }

  .penelopa-shell .atlas-v2-tab-strip {
    padding-inline: 0.1875rem;
  }

  .penelopa-shell .atlas-v2-tab-strip [role="tab"] {
    max-width: 8rem;
    padding-inline: 0.5rem;
  }

  .penelopa-properties {
    gap: 0.625rem;
  }

  .penelopa-properties-header {
    padding-bottom: 0.5rem;
  }

  /* The narrow dock cannot hold the swatch beside four channels. */
  .penelopa-color-editor {
    flex-wrap: wrap;
  }

  .penelopa-color-swatch {
    width: 1.5rem;
    height: 1.5rem;
  }

  .penelopa-color-channels {
    flex: 1 1 100%;
  }

  .penelopa-properties .penelopa-color-channel-input {
    font-size: 0.625rem;
    padding: 0 0.0625rem;
  }
}

@media (max-width: 700px) {
  .penelopa-topbar {
    gap: 0.375rem;
    padding-inline: 0.5rem;
  }

  .penelopa-brand-subtitle {
    display: none;
  }

  .penelopa-statusbar {
    gap: 0.5rem;
    padding-inline: 0.5rem;
  }

  .penelopa-statusbar-items {
    max-width: 58%;
  }

  .penelopa-color-swatch {
    width: 1.375rem;
  }
}

@media (max-width: 480px) {
  .penelopa-brand-title {
    font-size: 0.75rem;
  }

  .penelopa-statusbar {
    font-size: 0.65625rem;
  }

  .penelopa-statusbar-text {
    max-width: 6rem;
  }

  .penelopa-statusbar-items {
    gap: 0.375rem;
    max-width: 62%;
  }

  .penelopa-statusbar-item + .penelopa-statusbar-item {
    padding-inline-start: 0.375rem;
  }

  .penelopa-canvas-fit {
    top: 0.375rem;
    right: 0.375rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .penelopa-shell *,
  .penelopa-shell *::before,
  .penelopa-shell *::after {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }
}

/* ---- 13. Base document rules ---- */

a {
  color: var(--penelopa-accent);
}

/* ---- 14. Document recovery ---- */

.penelopa-recovery-banner {
  position: fixed;
  inset-block-start: 0.75rem;
  inset-inline: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(46rem, calc(100% - 2rem));
  margin-inline: auto;
  padding: 0.75rem 1rem;
  border: 1px solid var(--penelopa-warning);
  border-radius: 0.5rem;
  background: var(--penelopa-warning-bg);
  color: var(--penelopa-warning-text);
  box-shadow: var(--penelopa-shadow-popover);
}

.penelopa-recovery-copy {
  display: grid;
  gap: 0.125rem;
  font-size: 0.8125rem;
}

.penelopa-recovery-copy strong {
  font-size: 0.875rem;
}

.penelopa-recovery-error {
  color: var(--penelopa-danger-text);
}

.penelopa-recovery-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 0.5rem;
}

@media (max-width: 700px) {
  .penelopa-recovery-banner {
    align-items: stretch;
    flex-direction: column;
  }

  .penelopa-recovery-actions {
    justify-content: flex-end;
  }
}

/* ---- 15. Cloud conflict dialog ---- */

.penelopa-cloud-conflict-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgb(13 17 23 / 45%);
}

.penelopa-cloud-conflict {
  width: min(32rem, 100%);
  padding: 1.25rem;
  border: 1px solid var(--penelopa-border);
  border-radius: 0.5rem;
  background: var(--penelopa-surface);
  color: var(--penelopa-text);
  box-shadow: var(--penelopa-shadow-popover);
}

.penelopa-cloud-conflict h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.penelopa-cloud-conflict p {
  margin: 0 0 1rem;
  color: var(--penelopa-text-secondary);
  font-size: 0.875rem;
}

.penelopa-cloud-conflict-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* ---- 16. Multi-document tabs ---- */

.penelopa-document-tabs-wrap {
  position: relative;
  flex: 0 0 auto;
}

.penelopa-document-tabs {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.25rem;
  min-height: 1.875rem;
  padding: 0.1875rem 0.5rem 0;
  border-bottom: 1px solid var(--penelopa-divider);
  background: var(--penelopa-chrome);
}

.penelopa-document-tablist {
  display: flex;
  min-width: 0;
  gap: 0.125rem;
  overflow-x: auto;
}

.penelopa-document-tab {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: 4px 4px 0 0;
}

.penelopa-document-tab.is-active {
  border-color: var(--penelopa-border);
  background: var(--penelopa-surface);
}

.penelopa-document-tab-label,
.penelopa-document-tab-close,
.penelopa-document-tab-new {
  border: 0;
  background: transparent;
  color: var(--penelopa-text-secondary);
  cursor: pointer;
}

.penelopa-document-tab-label {
  max-width: 12rem;
  overflow: hidden;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.penelopa-document-tab.is-active .penelopa-document-tab-label {
  color: var(--penelopa-text);
}

.penelopa-document-tab-close {
  display: grid;
  width: 1.125rem;
  height: 1.125rem;
  margin-inline-end: 0.1875rem;
  place-items: center;
  border-radius: 3px;
}

.penelopa-document-tab-close:hover,
.penelopa-document-tab-new:hover:not(:disabled) {
  background: var(--penelopa-hover);
  color: var(--penelopa-text);
}

.penelopa-document-tab-new {
  width: 1.5rem;
  height: 1.5rem;
  margin-block-end: 0.1875rem;
  border-radius: 3px;
  font-size: 1rem;
  line-height: 1;
}

.penelopa-document-tab-new:disabled {
  color: var(--penelopa-text-disabled);
  cursor: default;
}

.penelopa-document-tabs-message {
  margin-inline-start: 0.5rem;
  color: var(--penelopa-danger-text);
  font-size: 0.75rem;
}

.penelopa-document-close-confirm {
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0.5rem;
  z-index: 80;
  display: grid;
  max-width: 30rem;
  gap: 0.5rem;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--penelopa-warning);
  border-radius: 0.375rem;
  background: var(--penelopa-warning-bg);
  color: var(--penelopa-warning-text);
  box-shadow: var(--penelopa-shadow-popover);
  font-size: 0.75rem;
}

.penelopa-document-close-confirm-actions {
  display: flex;
  gap: 0.375rem;
}

.penelopa-document-library-status.is-unsaved {
  color: var(--penelopa-warning-text);
}

.penelopa-document-library-status.is-empty {
  color: var(--penelopa-text-muted);
}

.penelopa-document-library {
  position: relative;
  flex: 0 0 auto;
  margin-block-end: 0.1875rem;
}

.penelopa-document-library-toggle {
  display: grid;
  width: 1.5rem;
  height: 1.5rem;
  place-items: center;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--penelopa-text-secondary);
  cursor: pointer;
  list-style: none;
}

.penelopa-document-library-toggle::-webkit-details-marker {
  display: none;
}

.penelopa-document-library-toggle:hover {
  background: var(--penelopa-hover);
  color: var(--penelopa-text);
}

.penelopa-document-library-menu {
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  z-index: 70;
  display: grid;
  min-width: 13rem;
  max-height: 16rem;
  padding: 0.25rem;
  overflow-y: auto;
  border: 1px solid var(--penelopa-border);
  border-radius: 0.375rem;
  background: var(--penelopa-surface);
  box-shadow: var(--penelopa-shadow-popover);
}

.penelopa-document-library-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.375rem 0.5rem;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--penelopa-text);
  text-align: start;
  cursor: pointer;
}

.penelopa-document-library-item:hover {
  background: var(--penelopa-hover);
}

.penelopa-document-library-item small {
  color: var(--penelopa-text-muted);
  font-size: 0.6875rem;
  white-space: nowrap;
}