:root {
  --node-editor-space-xs: 2px;
  --node-editor-space-sm: 4px;
  --node-editor-space-md: 8px;
  --node-editor-space-lg: 12px;
  --node-editor-space-xl: 16px;
  --node-editor-space-xxl: 20px;

  --node-editor-control-padding: var(--node-editor-space-sm) var(--node-editor-space-lg);

  --node-editor-inspector-space-xs: var(--node-editor-space-xs);
  --node-editor-inspector-space-sm: var(--node-editor-space-sm);
  --node-editor-inspector-space-md: var(--node-editor-space-md);
  --node-editor-inspector-space-lg: var(--node-editor-space-lg);
  --node-editor-inspector-space-xl: var(--node-editor-space-xl);
  --node-editor-inspector-space-xxl: var(--node-editor-space-xxl);
  --node-editor-inspector-content-padding: var(--node-editor-inspector-space-md);
  --node-editor-inspector-header-padding-top: var(--node-editor-inspector-space-md);
  --node-editor-inspector-header-padding-bottom: var(--node-editor-inspector-space-xs);
  --node-editor-inspector-header-gap: var(--node-editor-inspector-space-sm);
  --node-editor-inspector-section-gap: var(--node-editor-inspector-space-md);
  --node-editor-inspector-field-gap: var(--node-editor-inspector-space-sm);
  --node-editor-inspector-inline-gap: var(--node-editor-inspector-space-sm);
  --node-editor-inspector-empty-padding-vertical: var(--node-editor-inspector-space-xxl);
  --node-editor-inspector-empty-padding-horizontal: var(--node-editor-inspector-space-lg);
  --node-editor-inspector-input-padding: var(--node-editor-space-xs) var(--node-editor-space-sm);

  --node-editor-inspector-font-size-title: 0.625rem;
  --node-editor-inspector-line-height-title: 1.1;
  --node-editor-inspector-font-size-body: 0.75rem;
  --node-editor-inspector-line-height-body: 1.4;
  --node-editor-inspector-font-size-meta: 0.625rem;
  --node-editor-inspector-line-height-meta: 1.2;
  --node-editor-inspector-font-weight-medium: 600;
  --node-editor-inspector-font-size-heading: 0.875rem;
  --node-editor-inspector-font-size: var(--node-editor-inspector-font-size-body);
  --node-editor-inspector-line-height: var(--node-editor-inspector-line-height-body);

  --node-editor-theme-default-font-family: "MS Sans Serif", "Segoe UI", Tahoma, sans-serif;
  --node-editor-theme-control-font-family: "MS Sans Serif", "Segoe UI", Tahoma, sans-serif;
  --node-editor-theme-label-font-family: "MS Sans Serif", "Segoe UI", Tahoma, sans-serif;
  --node-editor-system-font: "MS Sans Serif", "Segoe UI", Tahoma, sans-serif;
  --node-editor-font-mono: "Lucida Console", Monaco, monospace;
  --node-editor-title-font: 700 0.875rem/1.2 var(--node-editor-theme-label-font-family);
  --node-editor-subtitle-font: 700 0.8125rem/1.2 var(--node-editor-theme-label-font-family);
  --node-editor-caption-font: 400 0.75rem/1.1 var(--node-editor-theme-default-font-family);
  --node-editor-control-text-font: 700 0.8125rem/1.2 var(--node-editor-theme-control-font-family);
  --node-editor-input-font: 400 0.75rem/1.1 var(--node-editor-theme-default-font-family);
  --node-editor-font-size-lg: 1rem;
  --node-editor-font-size-sm: 0.75rem;
  --node-editor-font-size-xs: 0.6875rem;

  --node-editor-grid-color: #000080;
  --node-editor-grid-opacity: 0.18;

  /* Shadow system */
  --node-editor-shadow-sm: inset -1px -1px #ffffff, inset 1px 1px rgba(0, 0, 0, 0.3);
  --node-editor-shadow-md: inset -2px -2px #ffffff, inset 2px 2px rgba(0, 0, 0, 0.4);
  --node-editor-shadow-lg: inset -3px -3px #ffffff, inset 3px 3px rgba(0, 0, 0, 0.5);

  /* Transition system */
  --node-editor-transition-duration: 0.1s;

  --node-editor-inspector-shadow: inset -2px -2px #ffffff, inset 2px 2px rgba(0, 0, 0, 0.4);
  --node-editor-inspector-header-shadow: inset -1px -1px #ffffff, inset 1px 1px rgba(0, 0, 0, 0.4);

  --node-editor-tree-item-height: 24px;
  --node-editor-tree-indent: 14px;

  --node-editor-control-button-size-sm: 18px;
  --node-editor-control-button-size: 22px;

  --node-editor-icon-size-sm: 12px;
  --node-editor-icon-selected-brightness: 1.1;

  --node-editor-text-color: #000000;
  --node-editor-text-secondary: #1f1f1f;
  --node-editor-header-text-color: #000080;
  --node-editor-label-color: var(--node-editor-text-color);
  --node-editor-secondary-label-color: #202020;
  --node-editor-tertiary-label-color: #404040;
  --node-editor-quaternary-label-color: #606060;
  --node-editor-control-text-color: #000000;
  --node-editor-control-text-color-primary: #000000;
  --node-editor-control-text-color-secondary: #000000;
  --node-editor-control-hover-text-color-primary: #000000;
  --node-editor-input-text-color: #000000;
  --node-editor-selected-control-text-color: #ffffff;
  --node-editor-selected-menu-item-text-color: #ffffff;

  --node-editor-accent-color: #000080;
  --node-editor-accent-color-hover: #0000cd;
  --node-editor-color-primary: #000080;
  --node-editor-keyboard-focus-indicator-color: rgba(0, 0, 128, 0.35);
  --node-editor-success-color: #008000;
  --node-editor-warning-color: #cc6600;
  --node-editor-caution-color: #990000;
  --node-editor-caution-hover-background: rgba(153, 0, 0, 0.2);
  --node-editor-system-orange-color: #cc6600;
  --node-editor-system-red-color: #990000;
  --node-editor-connection-color: #808080;

  --node-editor-surface-primary: #c0c0c0;
  --node-editor-surface-secondary: #dcdcdc;
  --node-editor-surface-tertiary: #a0a0a0;
  --node-editor-background-surface: #008080;
  --node-editor-selected-content-background-color: rgba(0, 0, 128, 0.35);
  --node-editor-selected-control-color: rgba(0, 0, 128, 0.25);
  --node-editor-under-page-background-color: #008080;
  --node-editor-window-background-color: #c0c0c0;

  --node-editor-control-background: #c0c0c0;
  --node-editor-control-background-primary: #000080;
  --node-editor-control-background-secondary: #d4d0c8;
  --node-editor-control-hover-background: #f8f8f8;
  --node-editor-control-hover-background-primary: #0000cd;
  --node-editor-hover-background: rgba(0, 0, 0, 0.08);
  --node-editor-control-box-shadow-primary: inset -2px -2px #ffffff, inset 2px 2px rgba(0, 0, 0, 0.6);
  --node-editor-control-box-shadow-secondary: inset -1px -1px #ffffff, inset 1px 1px rgba(0, 0, 0, 0.6);
  --node-editor-disabled-control-text-color: #6c6c6c;

  --node-editor-input-background: #ffffff;
  --node-editor-input-border: 1px solid #808080;
  --node-editor-input-border-hover: 1px solid #000080;
  --node-editor-input-box-shadow: inset -1px -1px #ffffff, inset 1px 1px rgba(0, 0, 0, 0.4);
  --node-editor-input-padding: var(--node-editor-space-sm) var(--node-editor-space-lg);

  --node-editor-card-border-color: #808080;
  --node-editor-card-border: 2px solid #ffffff;
  --node-editor-card-border-radius: 0;
  --node-editor-card-box-shadow: inset -2px -2px #ffffff, inset 2px 2px rgba(0, 0, 0, 0.6);
  --node-editor-card-hover-box-shadow: inset -3px -3px #ffffff, inset 3px 3px rgba(0, 0, 0, 0.6);
  --node-editor-card-elevated-box-shadow: inset -4px -4px #ffffff, inset 4px 4px rgba(0, 0, 0, 0.6);
  --node-editor-card-focus-box-shadow: 0 0 0 2px rgba(0, 0, 128, 0.4);
  --node-editor-card-disabled-background: #b5b5b5;
  --node-editor-card-filled-background: #dcdcdc;
  --node-editor-card-filled-hover-background: #e9e9e9;
  --node-editor-card-hover-border-color: #000000;

  --node-editor-dialog-background: var(--node-editor-surface-primary);
  --node-editor-dialog-box-shadow: inset -3px -3px #ffffff, inset 3px 3px rgba(0, 0, 0, 0.6);
  --node-editor-dialog-level-elevation: 1000;

  --node-editor-scroll-bar-thumb-color: #808080;
  --node-editor-active-scroll-bar-thumb-color: #3a6ea5;

  --node-editor-selected-secondary-color: rgba(255, 255, 255, 0.9);
  --node-editor-selected-hover-background: rgba(0, 0, 128, 0.25);

  --node-editor-table-header-background-color: #000080;
  --node-editor-table-header-background-color-hover: #0000cd;
  --node-editor-table-header-background-color-active: #0000ff;

  --node-editor-group-node-background: rgba(255, 255, 255, 0.4);
  --node-editor-group-node-border: #808080;
  --node-editor-group-node-active-background: rgba(0, 0, 128, 0.3);
  --node-editor-group-node-active-color: rgba(0, 0, 128, 0.6);
  --node-editor-node-port-input-color: #008000;
  --node-editor-node-port-output-color: #000080;

  --node-editor-tertiary-system-background: #d4d0c8;
  --node-editor-tertiary-system-fill-color: #e6e6e6;
  --node-editor-quaternary-system-fill-color: #f4f4f4;

  --node-editor-border-radius-xxs: 0;
  --node-editor-border-radius-xs: 0;
  --node-editor-radius-xs: 0;
  --node-editor-radius-sm: 0;
  --node-editor-radius-md: 0;
  --node-editor-control-border-radius: 0;
  --node-editor-segment-control-border-radius: 0;

  --node-editor-border-width: 1px;
  --node-editor-border-color: #808080;
  --node-editor-divider-color: #808080;
  --node-editor-separator-color: #b5b5b5;

  --node-editor-segment-backdrop-filter: none;
  --node-editor-segment-control-background: #c0c0c0;
  --node-editor-segment-control-background-color: #dcdcdc;
  --node-editor-segment-control-text-color: #000000;
  --node-editor-segment-control-active-background-color: #000080;
  --node-editor-segment-control-active-text-color: #ffffff;
  --node-editor-segment-control-segment-padding: 2px 6px;

  /* Tab Navigation - Windows 98 classic button style */
  --node-editor-tab-nav-gap: 0;
  --node-editor-tab-nav-padding: 0;
  --node-editor-tab-nav-border-radius: 0;
  --node-editor-tab-nav-background: #c0c0c0;
  --node-editor-tab-nav-box-shadow: inset -1px -1px #ffffff, inset 1px 1px rgba(0, 0, 0, 0.3);
  --node-editor-tab-button-flex: 1;
  --node-editor-tab-button-min-height: 22px;
  --node-editor-tab-button-padding: 2px 8px;
  --node-editor-tab-button-border-radius: 0;
  --node-editor-tab-button-background: #c0c0c0;
  --node-editor-tab-button-border: 2px outset #ffffff;
  --node-editor-tab-button-color: #000000;
  --node-editor-tab-button-font-size: var(--node-editor-inspector-font-size-meta);
  --node-editor-tab-button-font-weight: 400;
  --node-editor-tab-button-active-background: #000080;
  --node-editor-tab-button-active-color: #ffffff;
  --node-editor-tab-button-active-font-weight: 700;
  --node-editor-tab-button-active-border: 2px inset #808080;
  --node-editor-tab-button-active-box-shadow: none;
  --node-editor-tab-button-hover-background: #dcdcdc;
  --node-editor-tab-button-hover-color: #000000;

  /* Connection styling - Window98 theme */
  --node-editor-connection-base-stroke-width: 2;
  --node-editor-connection-active-stroke-width: 3;
  --node-editor-connection-flow-stripe-stroke-width: 1.5;
  --node-editor-connection-flow-stripe-active-stroke-width: 2.5;
  --node-editor-connection-direction-stroke-width: 2;
  --node-editor-connection-hover-shadow: drop-shadow(1px 1px 0 rgba(0, 0, 0, 0.5));
  --node-editor-connection-selected-shadow: drop-shadow(2px 2px 0 rgba(0, 0, 128, 0.6));
  --node-editor-connection-hover-opacity: 0.85;
  --node-editor-connection-dragging-opacity: 0.6;
  --node-editor-connection-stripe-dash-array: 10 14;
  --node-editor-connection-stripe-dash-offset-bg: -12;
  --node-editor-connection-stripe-opacity-accent: 0.9;
  --node-editor-connection-stripe-opacity-background: 0.6;
  --node-editor-connection-flow-animation-duration: 1.2s;
  --node-editor-connection-flow-animation-distance: -24;
  --node-editor-connection-base-transition: stroke 0.1s linear, stroke-width 0.1s linear;
  --node-editor-connection-arrow-transition: fill 0.1s linear;

  /* Connection drag styling - Window98 theme */
  --node-editor-connection-drag-stroke-width-connecting: 2;
  --node-editor-connection-drag-stroke-width-disconnecting: 3;
  --node-editor-connection-drag-dash-array-connecting: 4 4;
  --node-editor-connection-drag-dash-array-disconnecting: 6 3;
  --node-editor-connection-drag-animation-duration: 0.5s;
  --node-editor-connection-drag-animation-distance: -8;

  /* Inspector icon button - Windows 98 bevel style */
  --node-editor-inspector-icon-button-size: 22px;
  --node-editor-inspector-icon-button-size-sm: 18px;
  --node-editor-inspector-icon-button-icon-size: 12px;
  --node-editor-inspector-icon-button-icon-size-sm: 10px;
  --node-editor-inspector-icon-button-background: #c0c0c0;
  --node-editor-inspector-icon-button-background-hover: #d4d0c8;
  --node-editor-inspector-icon-button-background-active: #808080;
  --node-editor-inspector-icon-button-color: #000000;
  --node-editor-inspector-icon-button-color-hover: #000000;
  --node-editor-inspector-icon-button-color-active: #000080;
  --node-editor-inspector-icon-button-color-disabled: #6c6c6c;

  /* Inspector input label - Windows 98 typography */
  --node-editor-inspector-input-label-color: #000000;
  --node-editor-inspector-input-label-font-size: 0.625rem;
  --node-editor-inspector-input-label-font-weight: 600;
  --node-editor-inspector-input-label-width: auto;
  --node-editor-inspector-input-label-min-width: 40px;

  /* Inspector segment control - Windows 98 button bar */
  --node-editor-inspector-segment-background: #c0c0c0;
  --node-editor-inspector-segment-border-radius: 0;
  --node-editor-inspector-segment-padding: 0;
  --node-editor-inspector-segment-gap: 0;
  --node-editor-inspector-segment-button-background: #c0c0c0;
  --node-editor-inspector-segment-button-background-hover: #d4d0c8;
  --node-editor-inspector-segment-button-background-active: #000080;
  --node-editor-inspector-segment-button-color: #000000;
  --node-editor-inspector-segment-button-color-hover: #000000;
  --node-editor-inspector-segment-button-color-active: #ffffff;
  --node-editor-inspector-segment-button-shadow-active: inset -1px -1px #ffffff, inset 1px 1px rgba(0, 0, 0, 0.6);
}