:root {
  --n8n-bg: #f6f6f8;
  --n8n-panel-bg: #ffffff;
  --n8n-border: #dcdfe4;
  --n8n-text: #1f2430;
  --n8n-text-muted: #6b7280;
  --n8n-accent: #ff6d5a;
  --n8n-accent-dark: #e85a48;
  --n8n-success: #2f9e44;
  --n8n-error: #d1453b;
  --n8n-error-bg: #fdecea;
  --n8n-success-bg: #eaf7ec;
  --n8n-radius: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--n8n-bg);
  color: var(--n8n-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--n8n-panel-bg);
  border-bottom: 1px solid var(--n8n-border);
}

.workflow-switcher {
  display: flex;
  align-items: center;
  gap: 10px;
}

.workflow-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--n8n-radius);
  padding: 2px 6px;
}

.workflow-title:hover {
  background: var(--n8n-bg);
  border-color: var(--n8n-border);
}

.workflow-title-input {
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--n8n-text);
  background: var(--n8n-panel-bg);
  border: 1px solid var(--n8n-accent);
  border-radius: var(--n8n-radius);
  padding: 2px 6px;
  outline: none;
  min-width: 160px;
}

.workflow-select {
  border: 1px solid var(--n8n-border);
  background: var(--n8n-panel-bg);
  color: var(--n8n-text);
  border-radius: var(--n8n-radius);
  padding: 6px 10px;
  font-size: 13px;
  max-width: 220px;
}

.btn {
  border: 1px solid var(--n8n-border);
  background: var(--n8n-panel-bg);
  color: var(--n8n-text);
  border-radius: var(--n8n-radius);
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
}

.btn:hover {
  border-color: var(--n8n-accent);
}

.btn-primary {
  background: var(--n8n-accent);
  border-color: var(--n8n-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--n8n-accent-dark);
  border-color: var(--n8n-accent-dark);
}

.btn-ghost {
  background: transparent;
}

.layout {
  position: relative;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 49px);
}

.canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--n8n-bg);
}

.canvas-toolbar {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--n8n-border);
  background: var(--n8n-panel-bg);
}

.canvas-toolbar .add-node-select {
  width: 200px;
}

.add-node-select {
  padding: 8px 10px;
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  font-size: 13px;
  background: var(--n8n-panel-bg);
  color: var(--n8n-text);
}

.node-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  background: var(--n8n-bg);
  display: flex;
  flex-direction: column;
}

.node-overlay[hidden] {
  display: none;
}

.node-overlay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--n8n-panel-bg);
  border-bottom: 1px solid var(--n8n-border);
}

.node-overlay-title {
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--n8n-radius);
  padding: 2px 6px;
}

.node-overlay-title:hover {
  background: var(--n8n-bg);
  border-color: var(--n8n-border);
}

.node-overlay-title-input {
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  color: var(--n8n-text);
  background: var(--n8n-panel-bg);
  border: 1px solid var(--n8n-accent);
  border-radius: var(--n8n-radius);
  padding: 2px 6px;
  outline: none;
  min-width: 160px;
}

.node-overlay .node-panel {
  flex: 1;
}

.node-panel {
  padding: 24px 32px;
  overflow-y: auto;
}

.node-panel-empty {
  color: var(--n8n-text-muted);
  font-size: 14px;
  max-width: 420px;
}

.webhook-panel h2 {
  margin: 0 0 4px;
  font-size: 18px;
}

.panel-hint {
  color: var(--n8n-text-muted);
  font-size: 13px;
  max-width: 520px;
  margin: 0 0 16px;
}

.field-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--n8n-text-muted);
  margin-bottom: 6px;
}

.payload-input {
  width: 100%;
  max-width: 640px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  padding: 12px;
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  resize: vertical;
  display: block;
  margin-bottom: 12px;
}

.payload-input:focus {
  outline: none;
  border-color: var(--n8n-accent);
}

.error-box {
  background: var(--n8n-error-bg);
  color: var(--n8n-error);
  border: 1px solid #f3c8c4;
  border-radius: var(--n8n-radius);
  padding: 10px 12px;
  font-size: 13px;
  max-width: 640px;
  margin-bottom: 12px;
}

.status-box {
  background: var(--n8n-success-bg);
  color: var(--n8n-success);
  border: 1px solid #c7e8cb;
  border-radius: var(--n8n-radius);
  padding: 10px 12px;
  font-size: 13px;
  max-width: 640px;
  margin-bottom: 12px;
}

/* --- Node Detail View (three-panel node view) --- */

.ndv {
  display: grid;
  grid-template-columns: 260px 1fr 260px;
  gap: 16px;
  align-items: start;
}

.ndv-panel {
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  background: var(--n8n-panel-bg);
  padding: 12px;
  min-height: 200px;
}

.ndv-panel-header {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--n8n-text-muted);
  margin-bottom: 10px;
}

.ndv-center .ndv-panel-header {
  color: var(--n8n-text);
  font-size: 13px;
  text-transform: none;
  letter-spacing: normal;
}

.ndv-tab-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--n8n-accent-dark);
  border-bottom: 2px solid var(--n8n-accent);
  display: inline-block;
  padding-bottom: 4px;
  margin-bottom: 8px;
}

.ndv-output-placeholder {
  color: var(--n8n-text-muted);
  font-size: 13px;
}

.ndv-output-skipped {
  padding: 8px 10px;
  border-left: 3px solid var(--n8n-text-muted);
}

/* --- Item pager --- */

.item-pager {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--n8n-text-muted);
  margin-bottom: 10px;
}

.pager-btn {
  padding: 2px 8px;
  font-size: 13px;
  line-height: 1;
}

.pager-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.pager-label {
  font-weight: 600;
  color: var(--n8n-text);
}

/* --- Schema tree --- */

.schema-tree {
  font-size: 13px;
}

.schema-empty {
  color: var(--n8n-text-muted);
  font-size: 13px;
}

.schema-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 3px 4px;
  border-radius: 4px;
  cursor: default;
}

.schema-branch {
  cursor: pointer;
}

.schema-branch:hover {
  background: var(--n8n-bg);
}

.schema-marker {
  width: 12px;
  flex-shrink: 0;
  color: var(--n8n-text-muted);
  font-size: 10px;
}

.schema-key {
  font-weight: 600;
  color: var(--n8n-text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.schema-value {
  color: var(--n8n-text-muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.schema-leaf:hover {
  background: var(--n8n-bg);
}

.schema-children {
  margin-left: 16px;
}

.schema-children.is-collapsed {
  display: none;
}

/* --- Parameter field (Fixed / Expression) --- */

.param-field {
  max-width: 480px;
  margin-bottom: 16px;
}

.param-field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.param-mode-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--n8n-text-muted);
  cursor: pointer;
}

.param-input {
  width: 100%;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  padding: 8px 10px;
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
}

.param-input:focus {
  outline: none;
  border-color: var(--n8n-accent);
}

.param-input.is-drag-over {
  border-color: var(--n8n-accent);
  background: #fff4f2;
}

.param-preview {
  margin-top: 6px;
  font-size: 12px;
  color: var(--n8n-success);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.param-preview.is-error {
  color: var(--n8n-error);
}

/* --- Schema tree drag source --- */

.schema-leaf {
  cursor: grab;
}

.schema-leaf.is-dragging {
  opacity: 0.4;
}

/* --- Edit Fields: dynamic field rows --- */

.edit-fields-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 10px;
}

.edit-field-row {
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  padding: 10px;
  max-width: 480px;
}

.edit-field-row-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.field-type-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--n8n-text-muted);
  background: var(--n8n-bg);
  border: 1px solid var(--n8n-border);
  border-radius: 999px;
  padding: 2px 8px;
  flex-shrink: 0;
}

.field-name-input {
  flex: 1;
  font-size: 13px;
  padding: 6px 10px;
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
}

.field-name-input:focus {
  outline: none;
  border-color: var(--n8n-accent);
}

.remove-field-btn {
  padding: 2px 10px;
  font-size: 15px;
  line-height: 1;
  color: var(--n8n-text-muted);
  flex-shrink: 0;
}

.remove-field-btn:hover {
  color: var(--n8n-error);
  border-color: var(--n8n-error);
}

.edit-field-row .param-field {
  max-width: none;
  margin-bottom: 0;
}

.add-field-btn {
  margin-bottom: 14px;
}

.keep-only-toggle {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: var(--n8n-text-muted);
  max-width: 480px;
  cursor: pointer;
}

.keep-only-toggle input {
  margin-top: 2px;
}

/* --- OUTPUT panel: Test step + results --- */

.test-step-btn {
  width: 100%;
  margin-bottom: 12px;
}

.output-item-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--n8n-text-muted);
  margin-bottom: 8px;
}

.output-json {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.output-error-box {
  margin-bottom: 10px;
  max-width: none;
}

/* --- Canvas --- */

.canvas-scroll {
  width: 100%;
  height: 100%;
  overflow: auto;
}

.canvas-surface {
  position: relative;
  width: 2400px;
  height: 1600px;
}

.canvas-empty-hint {
  position: absolute;
  top: 40px;
  left: 60px;
  color: var(--n8n-text-muted);
  font-size: 14px;
}

.canvas-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}

.canvas-connection-line {
  fill: none;
  stroke: #c7cad1;
  stroke-width: 2;
}

.canvas-connection-temp {
  stroke: var(--n8n-accent);
  stroke-dasharray: 6 4;
}

.canvas-connection-delete {
  fill: #fff;
  stroke: #c7cad1;
  stroke-width: 1.5;
  pointer-events: auto;
  cursor: pointer;
}

.canvas-connection-delete:hover {
  stroke: var(--n8n-error);
}

.canvas-connection-delete-x {
  font-size: 11px;
  text-anchor: middle;
  dominant-baseline: central;
  fill: var(--n8n-text-muted);
  pointer-events: none;
}

.canvas-connection-count {
  font-size: 11px;
  font-weight: 600;
  text-anchor: middle;
  fill: var(--n8n-text-muted);
  pointer-events: none;
}

.canvas-nodes-layer {
  position: absolute;
  inset: 0;
  /* Transparent but still hit-testable — without this it sits above
     .canvas-svg in paint order and swallows clicks meant for the
     connection delete button. Cards opt back in below. */
  pointer-events: none;
}

.canvas-node {
  position: absolute;
  width: 170px;
  height: 56px;
  background: var(--n8n-panel-bg);
  border: 2px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  user-select: none;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  pointer-events: auto;
}

.canvas-node:active {
  cursor: grabbing;
}

.canvas-node.is-selected {
  border-color: var(--n8n-accent);
  box-shadow: 0 0 0 3px rgba(255, 109, 90, 0.15);
}

.canvas-node-webhook {
  border-left-width: 4px;
  border-left-color: #4c6ef5;
}

.canvas-node-editFields {
  border-left-width: 4px;
  border-left-color: #12b886;
}

.canvas-node-code {
  border-left-width: 4px;
  border-left-color: #7048e8;
}

.canvas-node-if {
  border-left-width: 4px;
  border-left-color: #f08c00;
}

.canvas-node-switch {
  border-left-width: 4px;
  border-left-color: #e64980;
}

.canvas-node-merge {
  border-left-width: 4px;
  border-left-color: #495057;
}

.canvas-node-removeDuplicates {
  border-left-width: 4px;
  border-left-color: #1098ad;
}

.canvas-node-respondToWebhook {
  border-left-width: 4px;
  border-left-color: #2f9e44;
}

.canvas-node-firestore {
  border-left-width: 4px;
  border-left-color: #ff8f00;
}

.canvas-node-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--n8n-text);
  pointer-events: none;
}

.canvas-node-delete {
  position: absolute;
  top: -8px;
  left: -8px;
  width: 18px;
  height: 18px;
  padding: 0;
  border-radius: 50%;
  border: 1.5px solid var(--n8n-border);
  background: #fff;
  color: var(--n8n-text-muted);
  font-size: 12px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.12s ease, border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
}

.canvas-node:hover .canvas-node-delete {
  opacity: 1;
}

.canvas-node-delete:hover {
  border-color: var(--n8n-error);
  color: var(--n8n-error);
  background: var(--n8n-error-bg);
}

.canvas-node-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--n8n-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 999px;
}

/* Skipped (E2/E5): never ran this pass, distinct from "ran, 0 items" —
   dimmed card + a muted "Skipped" badge instead of an accent-colored
   count, so it reads as inactive rather than as a result. */
.canvas-node.is-skipped {
  opacity: 0.5;
}

.canvas-node-badge-skipped {
  background: var(--n8n-text-muted);
}

.canvas-port {
  position: absolute;
  top: 50%;
  width: 12px;
  height: 12px;
  margin-top: -6px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--n8n-text-muted);
  cursor: crosshair;
}

.canvas-port-in {
  left: -6px;
}

.canvas-port-out {
  right: -6px;
}

.canvas-port:hover {
  border-color: var(--n8n-accent);
  background: var(--n8n-accent);
}

.canvas-port-error {
  border-color: var(--n8n-error);
  border-style: dashed;
}

.canvas-port-error:hover {
  background: var(--n8n-error);
}

/* --- Upstream node viewing selector (INPUT panel) --- */

.viewing-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
}

.viewing-selector-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--n8n-text-muted);
}

.viewing-selector-select {
  flex: 1;
  font-size: 12px;
  padding: 4px 8px;
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  background: var(--n8n-panel-bg);
  color: var(--n8n-text);
}

/* --- Code node --- */

.code-controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 12px;
}

/* Shown under the snippet dropdown (Phase S3) — what a selected snippet
   does, and for production snippets, where in the router to paste it. */
.snippet-note {
  color: var(--n8n-text-muted);
  font-size: 12.5px;
  line-height: 1.5;
  max-width: 640px;
  margin: -4px 0 12px;
  padding: 8px 10px;
  background: var(--n8n-bg);
  border-left: 3px solid var(--n8n-accent);
  border-radius: 4px;
}

.code-control-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--n8n-text-muted);
}

.code-mode-select,
.code-snippet-select {
  font-size: 13px;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  padding: 6px 10px;
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  background: var(--n8n-panel-bg);
  color: var(--n8n-text);
  min-width: 220px;
}

/* Wraps the snippet dropdown, "Replace all" and "Duplicate to My
   snippets" so they sit on one row under the same "Snippet" label (Phase
   US2/US3) — wraps onto a second line rather than clipping once three
   controls no longer fit a narrow panel. */
.code-snippet-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.btn-small {
  padding: 5px 10px;
  font-size: 12px;
}

/* Sits next to the Mode/Snippet <label> controls in the same flex row —
   those stretch to the row's full height (uppercase caption + control),
   so a bare button needs its own alignment to sit level with them
   instead of stretching top-to-bottom (Phase US3). */
.code-save-snippet-btn {
  align-self: flex-end;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn:disabled:hover {
  border-color: var(--n8n-border);
}

.code-editor {
  width: 100%;
  max-width: 640px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  line-height: 1.5;
  padding: 12px;
  border: 1px solid var(--n8n-border);
  border-radius: var(--n8n-radius);
  resize: vertical;
  tab-size: 2;
}

.code-editor:focus {
  outline: none;
  border-color: var(--n8n-accent);
}

/* --- My snippets manager (Phase US4) --- */

.snippet-manager {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--n8n-border);
  max-width: 640px;
}

.snippet-manager-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.snippet-manager-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--n8n-text-muted);
}

.snippet-manager-header-actions {
  display: flex;
  gap: 6px;
}

.snippet-manager-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--n8n-border);
}

.snippet-manager-row:last-child {
  border-bottom: none;
}

.snippet-manager-info {
  min-width: 0;
}

.snippet-manager-name {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--n8n-text);
}

.snippet-mode-pill {
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--n8n-bg);
  color: var(--n8n-text-muted);
  border: 1px solid var(--n8n-border);
}

.snippet-manager-note {
  font-size: 12px;
  color: var(--n8n-text-muted);
  margin-top: 2px;
}

.snippet-manager-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex-shrink: 0;
}

/* --- OUTPUT branch tabs (IF / Switch) --- */

.output-branch-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.output-branch-tab {
  border: 1px solid var(--n8n-border);
  background: var(--n8n-panel-bg);
  color: var(--n8n-text-muted);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.output-branch-tab:hover {
  border-color: var(--n8n-accent);
}

.output-branch-tab.is-active {
  background: var(--n8n-accent);
  border-color: var(--n8n-accent);
  color: #fff;
}

/* --- Switch node: rule rows --- */

.switch-rules {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0;
}

.switch-rule-row {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 480px;
}

.switch-rule-row .field-name-input {
  flex: 1;
  min-width: 0;
}

.switch-rule-equals {
  color: var(--n8n-text-muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  flex-shrink: 0;
}

/* --- Merge node --- */

.merge-input-summary {
  margin-bottom: 16px;
}

/* --- Respond to Webhook: simulated response --- */

.simulated-response {
  margin-bottom: 16px;
}

.simulated-response .status-box {
  max-width: none;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12px;
}

/* --- Firestore: mock collection viewer --- */

.firestore-collection-viewer {
  margin-bottom: 16px;
}

.firestore-collection-viewer .btn {
  margin-bottom: 10px;
}

.gmail-sent-viewer {
  margin-bottom: 16px;
}

.gmail-sent-viewer .btn {
  margin-bottom: 10px;
}