@layer surfaces {
  .selection-inspector {
    --selection-inspector-inline-size: 304px;
    --selection-inspector-max-block-size: var(--surface-overlay-max-block);
    --selection-inspector-command-columns: 2;
    --selection-inspector-command-gap: var(--space-related);
    --selection-inspector-control-block-size: 36px;
    --selection-inspector-control-gap: var(--space-related);
    --selection-inspector-close-button-size: 32px;
    --selection-inspector-close-button-hover-size: 30px;
    --selection-inspector-label-control-gap: 2px;
    --selection-inspector-viewport-gap: var(--space-cluster);
    --selection-inspector-padding: 14px;
    --selection-inspector-shell-gap: var(--space-cluster);
    --selection-inspector-form-gap: var(--space-cluster);
    --selection-inspector-field-stack-gap: var(--space-cluster);
    --selection-inspector-field-gap: var(--selection-inspector-label-control-gap);
    --selection-inspector-footer-gap: var(--selection-inspector-control-gap);
    --selection-inspector-label-text: var(--text-muted);
    --selection-inspector-muted-text: var(--text-muted);
    --selection-inspector-control-radius: var(--shape-control);
    --selection-inspector-control-surface: var(--panel-control-surface);
    --selection-inspector-control-surface-hover: var(--panel-control-surface-hover);
    --selection-inspector-control-border: var(--panel-control-border);
    --selection-inspector-control-border-hover: var(--panel-control-border-hover);
    --selection-inspector-button-bg: var(--selection-inspector-control-surface);
    --selection-inspector-button-bg-hover: var(--selection-inspector-control-surface-hover);
    --selection-inspector-button-border: var(--selection-inspector-control-border);
    --selection-inspector-button-border-hover: var(--selection-inspector-control-border-hover);
    --selection-inspector-button-radius: var(--shape-control);
    --selection-inspector-primary-button-bg: var(--accent-surface);
    --selection-inspector-primary-button-bg-hover: var(--accent-surface-hover);
    --selection-inspector-primary-button-border: var(--accent-border-strong);
    --selection-inspector-primary-button-text: var(--text);
    --selection-inspector-available-block-size: var(--surface-overlay-max-block);

    background: var(--floating-chrome-plate-bg);
    border-color: var(--floating-chrome-plate-border);
    box-shadow: var(--elevation-floating);
    box-sizing: border-box;
    color: var(--text);
    display: flex;
    flex-direction: column;
    font-family: var(--font-ui);
    font-size: var(--ui-font-size);
    gap: var(--selection-inspector-shell-gap);
    block-size: auto;
    inline-size: min(var(--selection-inspector-inline-size), calc(100vw - var(--app-safe-left, 0px) - var(--app-safe-right, 0px) - (2 * var(--selection-inspector-viewport-gap))));
    max-block-size: min(var(--selection-inspector-max-block-size), var(--selection-inspector-available-block-size));
    min-block-size: 0;
    overflow: hidden;
    overflow: clip;
    padding: var(--selection-inspector-padding);
    --motion-transform-base: translateX(-50%);
    position: fixed;
    transform: var(--motion-transform-base) translateY(0) scale(1);
    transform-origin: 50% calc(100% + 18px);
    transition:
      opacity var(--motion-duration-surface) var(--motion-ease-emphasized),
      transform var(--motion-duration-surface) var(--motion-ease-emphasized),
      filter var(--motion-duration-surface) var(--motion-ease-emphasized),
      left var(--motion-duration-panel-sheet) var(--motion-ease-emphasized),
      bottom var(--motion-duration-panel-sheet) var(--motion-ease-emphasized),
      inline-size var(--motion-duration-panel-sheet) var(--motion-ease-emphasized),
      max-block-size var(--motion-duration-panel-sheet) var(--motion-ease-emphasized),
      background-color var(--motion-duration-surface) var(--motion-ease-out),
      border-color var(--motion-duration-surface) var(--motion-ease-out),
      box-shadow var(--motion-duration-surface) var(--motion-ease-out);
    z-index: var(--z-popover);
  }

  .selection-inspector[hidden] { display: none; }
  .selection-inspector.ui-motion-dismiss { pointer-events: none; }

  .selection-inspector[data-selection-context="table"] {
    --selection-inspector-inline-size: 424px;
    --selection-inspector-command-columns: 4;
    --selection-inspector-command-gap: var(--space-related);
    --selection-inspector-control-block-size: max(var(--small-control-height), 34px);
    --selection-inspector-max-block-size: var(--surface-overlay-max-block);
    padding: var(--space-cluster);
  }

  .selection-inspector[data-selection-context="link"] {
    --selection-inspector-inline-size: 336px;
    --selection-inspector-max-block-size: var(--surface-overlay-max-block);
  }

  .selection-inspector[data-selection-context="image"] {
    --selection-inspector-inline-size: 336px;
    --selection-inspector-max-block-size: var(--surface-overlay-max-block);
  }

  .selection-inspector[data-selection-context="citation"] {
    --selection-inspector-inline-size: 420px;
    --selection-inspector-command-columns: 3;
    --selection-inspector-max-block-size: var(--surface-overlay-max-block);
  }

  .selection-inspector *,
  .selection-inspector *::before,
  .selection-inspector *::after {
    box-sizing: border-box;
    min-inline-size: 0;
  }

  .selection-inspector-header {
    align-items: center;
    display: grid;
    gap: var(--space-related);
    grid-template-columns: minmax(0, 1fr) auto;
    inline-size: 100%;
    min-block-size: 0;
  }

  .selection-inspector-heading {
    display: grid;
    gap: 2px;
    min-inline-size: 0;
  }

  .selection-inspector-title {
    color: var(--text);
    font-size: var(--ui-font-size);
    font-weight: var(--ui-font-weight-strong);
    letter-spacing: -0.012em;
    line-height: 1.25;
    margin: 0;
  }

  .selection-inspector-close {
    align-items: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--shape-panel);
    color: var(--text-muted);
    display: inline-flex;
    flex: 0 0 auto;
    block-size: var(--selection-inspector-close-button-size);
    inline-size: var(--selection-inspector-close-button-size);
    justify-content: center;
    justify-self: end;
    min-block-size: var(--selection-inspector-close-button-size);
    min-inline-size: var(--selection-inspector-close-button-size);
    padding: 0;
    position: relative;
    transition:
      background-color var(--motion-duration-micro) var(--motion-ease-standard),
      border-color var(--motion-duration-micro) var(--motion-ease-standard),
      color var(--motion-duration-micro) var(--motion-ease-standard),
      transform var(--motion-duration-micro) var(--motion-ease-standard);
  }

  .selection-inspector-close::before {
    background: var(--bg-card);
    border: 1px solid transparent;
    border-radius: var(--shape-panel);
    block-size: var(--selection-inspector-close-button-hover-size);
    box-shadow: 0 0 0 0 transparent;
    content: "";
    inline-size: var(--selection-inspector-close-button-hover-size);
    inset-block-start: 50%;
    inset-inline-start: 50%;
    opacity: 0;
    position: absolute;
    transform: translate(-50%, -50%) scale(.72);
    transition:
      background-color var(--motion-duration-micro) var(--motion-ease-standard),
      border-color var(--motion-duration-micro) var(--motion-ease-standard),
      box-shadow var(--motion-duration-micro) var(--motion-ease-standard),
      opacity var(--motion-duration-micro) var(--motion-ease-standard),
      transform var(--motion-duration-micro) var(--motion-ease-standard);
  }

  .selection-inspector-close svg {
    block-size: 16px;
    flex: 0 0 16px;
    inline-size: 16px;
    position: relative;
    transform: scale(.92);
    transition: transform var(--motion-duration-micro) var(--motion-ease-standard);
    z-index: 1;
  }

  .selection-inspector-close:hover,
  .selection-inspector-close:focus-visible {
    background: transparent;
    border-color: transparent;
    color: var(--text);
    outline: 0;
    transform: translateY(-1px);
  }

  .selection-inspector-close:hover::before,
  .selection-inspector-close:focus-visible::before {
    border-color: var(--border);
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }

  .selection-inspector-close:focus-visible::before {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
  }

  .selection-inspector-close:hover svg,
  .selection-inspector-close:focus-visible svg {
    transform: scale(1);
  }

  .selection-inspector-summary {
    color: var(--text-muted);
    font-size: var(--ui-font-size-compact);
    line-height: var(--type-line-meta);
    margin: 0;
    max-inline-size: 42ch;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .selection-inspector-summary:empty { display: none; }

  .selection-inspector-groups {
    --motion-transform-base: translateX(0);

    align-content: start;
    display: grid;
    flex: 1 1 auto;
    gap: var(--selection-inspector-form-gap);
    inline-size: 100%;
    max-block-size: 100%;
    min-block-size: 0;
    overflow-x: clip;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-block-end: 1px;
    scrollbar-gutter: auto;
  }

  .selection-inspector-groups > * {
    animation: compose-state-settle var(--motion-duration-state) var(--motion-ease-out) both;
    inline-size: 100%;
  }

  .selection-inspector[data-selection-context="table"] .selection-inspector-groups {
    overflow: hidden;
  }

  .selection-inspector-stack,
  .selection-inspector-field-stack,
  .selection-inspector-form {
    display: grid;
    gap: var(--selection-inspector-form-gap);
    inline-size: 100%;
    min-block-size: 0;
  }

  .selection-inspector-field-stack {
    gap: var(--selection-inspector-field-stack-gap);
  }

  .selection-inspector-form {
    align-content: start;
    grid-auto-rows: auto;
  }

  .selection-inspector-form-actions {
    align-items: stretch;
    gap: var(--selection-inspector-footer-gap);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 0;
  }

  .selection-inspector-command-grid {
    display: grid;
    column-gap: var(--selection-inspector-command-gap);
    row-gap: var(--selection-inspector-command-gap);
    grid-auto-flow: row;
    grid-template-columns: repeat(var(--selection-inspector-command-columns), minmax(0, 1fr));
    inline-size: 100%;
    margin: 0;
    max-inline-size: 100%;
    overflow: visible;
    padding: 0;
  }

  .selection-inspector-action,
  .selection-inspector-form-button {
    background: var(--selection-inspector-button-bg);
    border-color: var(--selection-inspector-button-border);
    border-radius: var(--selection-inspector-button-radius);
    box-shadow: none;
    inline-size: 100%;
    margin: 0;
    max-inline-size: 100%;
    min-block-size: var(--selection-inspector-control-block-size);
    min-inline-size: 0;
    padding-block: 0;
    padding-inline: var(--space-related);
    text-align: center;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
  }

  .selection-inspector-action:where(:hover, :focus-visible),
  .selection-inspector-form-button:where(:hover, :focus-visible) {
    background: var(--selection-inspector-button-bg-hover);
    border-color: var(--selection-inspector-button-border-hover);
  }

  .selection-inspector[data-selection-context="table"] .selection-inspector-action {
    min-block-size: var(--selection-inspector-control-block-size);
    padding-inline: var(--space-tight);
  }

  .selection-inspector[data-selection-context="table"] .selection-inspector-command-grid {
    gap: var(--selection-inspector-command-gap);
  }


  .selection-inspector-form-button-primary,
  .selection-inspector-action[aria-pressed="true"] {
    background: var(--selection-inspector-primary-button-bg);
    border-color: var(--selection-inspector-primary-button-border);
    color: var(--selection-inspector-primary-button-text);
    font-weight: var(--ui-font-weight-strong);
  }

  .selection-inspector-form-actions > .selection-inspector-form-button-primary {
    grid-column: 1 / -1;
  }


  .selection-inspector-action:disabled,
  .selection-inspector-form-button:disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.55;
  }

  .selection-inspector-action-danger:not(:disabled),
  .selection-inspector-form-button-danger:not(:disabled) {
    color: var(--danger);
  }

  .selection-inspector-action-label,
  .selection-inspector-form-button-label {
    display: block;
    font-size: var(--ui-font-size-compact);
    font-weight: var(--ui-font-weight-strong);
    line-height: 1.2;
    max-inline-size: 100%;
    overflow: visible;
    overflow-wrap: normal;
    text-overflow: clip;
    white-space: nowrap;
  }

  .selection-inspector[data-selection-context="table"] :where(.selection-inspector-action-label, .selection-inspector-form-button-label) {
    font-size: var(--ui-font-size-compact);
    line-height: 1.2;
    white-space: nowrap;
  }

  .selection-inspector-action-shortcut,
  .selection-inspector-action-badge {
    color: var(--text-muted);
    font: inherit;
    font-size: var(--ui-font-size-compact);
    line-height: var(--type-line-meta);
  }

  .selection-inspector-action-badge:empty { display: none; }

  .selection-inspector-label {
    background: transparent;
    border: 0;
    color: var(--selection-inspector-label-text);
    display: block;
    font-size: var(--ui-font-size);
    font-weight: 450;
    inline-size: auto;
    letter-spacing: 0;
    line-height: var(--ui-line-height);
    margin: 0;
    min-block-size: auto;
    padding: 0;
    text-transform: none;
  }

  .selection-inspector-preview,
  .selection-inspector-error,
  .selection-inspector-empty {
    font-size: var(--ui-font-size-compact);
    line-height: var(--type-line-meta);
    margin: 0;
  }

  .selection-inspector-preview,
  .selection-inspector-empty { color: var(--text-muted); }
  .selection-inspector-error { color: var(--danger); }

  .selection-inspector-preview {
    border-block-start: 1px solid var(--panel-row-border);
    overflow: hidden;
    padding-block-start: var(--space-related);
    text-overflow: ellipsis;
  }

  .selection-inspector-field {
    align-content: start;
    display: flex;
    flex-direction: column;
    gap: var(--selection-inspector-field-gap);
    inline-size: 100%;
    margin: 0;
    padding: 0;
  }

  .selection-inspector-field > .selection-inspector-label {
    margin-block: 0;
    padding-block: 0;
  }

  .selection-inspector-field > .selection-inspector-input {
    margin-block: 0;
    padding-block: 0;
  }

  .selection-inspector-input {
    background-color: var(--selection-inspector-control-surface);
    border: 1px solid var(--selection-inspector-control-border);
    border-radius: var(--selection-inspector-control-radius);
    color: var(--text);
    font-family: var(--font-ui);
    font-size: var(--ui-field-font-size);
    font-weight: var(--ui-field-font-weight);
    inline-size: 100%;
    line-height: var(--ui-field-line-height);
    margin: 0;
    min-block-size: var(--selection-inspector-control-block-size);
    padding-block: 0;
    padding-inline: var(--space-related);
    transition:
      background-color var(--motion-duration-micro) var(--motion-ease-out),
      border-color var(--motion-duration-micro) var(--motion-ease-out),
      box-shadow var(--motion-duration-micro) var(--motion-ease-out);
  }

  .selection-inspector-input:where(:hover, :focus-visible) {
    background-color: var(--selection-inspector-control-surface-hover);
    border-color: var(--selection-inspector-control-border-hover);
  }

  .selection-inspector-citation-fields {
    display: grid;
    column-gap: var(--selection-inspector-form-gap);
    row-gap: var(--selection-inspector-control-gap);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    inline-size: 100%;
  }

  .selection-inspector-field-wide { grid-column: 1 / -1; }

  .selection-inspector-select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23111111' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px 16px;
    padding-inline-end: 40px;
  }

  :root[data-theme="dark"] .selection-inspector-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23f7f4ee' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  }

  @media (prefers-reduced-motion: reduce) {
    .selection-inspector,
    .selection-inspector-groups > * {
      animation-duration: var(--motion-duration-reduced);
      transition-duration: var(--motion-duration-reduced);
    }
  }

  @media (max-width: 760px) {
    .selection-inspector,
    .selection-inspector[data-selection-context] {
      inline-size: min(var(--selection-inspector-inline-size), calc(100vw - var(--app-safe-left) - var(--app-safe-right) - (2 * var(--selection-inspector-viewport-gap))));
      max-block-size: min(var(--selection-inspector-max-block-size), var(--selection-inspector-available-block-size));
    }

    .selection-inspector[data-selection-context="table"] {
      --selection-inspector-inline-size: 424px;
      --selection-inspector-command-columns: 4;
      --selection-inspector-command-gap: var(--space-tight);
      --selection-inspector-control-block-size: max(var(--small-control-height), 34px);
      --selection-inspector-max-block-size: var(--surface-overlay-max-block);
      padding: var(--space-related);
    }

    .selection-inspector[data-selection-context="table"] .selection-inspector-action {
      min-block-size: var(--selection-inspector-control-block-size);
      padding-inline: var(--space-tight);
    }

    .selection-inspector[data-selection-context="table"] .selection-inspector-action-label {
      line-height: 1.2;
      white-space: nowrap;
    }

    .selection-inspector[data-selection-context="citation"] {
      --selection-inspector-command-columns: 2;
    }

    .selection-inspector-citation-fields {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 340px) {
    .selection-inspector[data-selection-context="table"] {
      --selection-inspector-command-columns: 2;
      --selection-inspector-max-block-size: var(--surface-overlay-max-block);
    }
  }
}

@layer overrides {
  /* Actual controls provide the coarse-pointer hit target; labels must stay text-sized so they remain attached to their fields. */
  @media (pointer: coarse) {
    .selection-inspector :where(.selection-inspector-label) {
      min-block-size: auto;
    }
  }

  .selection-inspector :where(.selection-inspector-action-label, .selection-inspector-form-button-label, .selection-inspector-preview, .selection-inspector-error, .selection-inspector-empty, .selection-inspector-summary, .selection-inspector-action-shortcut, .selection-inspector-action-badge) {
    font-size: var(--ui-font-size-compact);
    line-height: var(--type-line-meta);
  }

  .selection-inspector[data-selection-context="table"] :where(.selection-inspector-action-label, .selection-inspector-form-button-label) {
    line-height: 1.2;
    white-space: nowrap;
  }

  @media (max-width: 760px) {
    .selection-inspector[data-selection-context="table"] :where(.selection-inspector-action-label, .selection-inspector-form-button-label) {
      line-height: 1.2;
      white-space: nowrap;
    }
  }
}