/* ── Reset & base ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body, #root {
  width: 100%;
  height: 100%;
  background: #1a1a2e;
  color: #e0e0e0;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  font-size: 13px;
  overflow: hidden;
}

.app-container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* ── Toolbar ───────────────────────────────────────────────────────── */
#toolbar {
  height: 44px;
  background: #242424;
  border-bottom: 1px solid #000000;
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  z-index: 100;
  user-select: none;
  flex-shrink: 0;
}

#app-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #ffffff;
  margin-right: 8px;
  flex-shrink: 0;
}

.toolbar-group {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

/* ── Buttons ───────────────────────────────────────────────────────── */
.btn {
  padding: 5px 12px;
  border: 1px solid #0f3460;
  border-radius: 5px;
  background: #0f3460;
  color: #e0e0e0;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.btn:hover {
  background: #1a4a8a;
  border-color: #3a7abf;
}
.btn:active {
  background: #0a2040;
}
.btn-primary {
  background: #e94560;
  border-color: #e94560;
  font-weight: 600;
}
.btn-primary:hover {
  background: #ff6b81;
  border-color: #ff6b81;
}

/* ── Status bar ────────────────────────────────────────────────────── */
.status-bar {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  max-width: 60%;
  flex-shrink: 1;
}
.status-bar.info  { color: #90caf9; }
.status-bar.error { color: #ef9a9a; background: rgba(183,28,28,0.2); }

/* ── React Flow container ──────────────────────────────────────────── */
.flow-container {
  flex: 1;
  position: relative;
}

/* ── React Flow dark overrides ─────────────────────────────────────── */
.react-flow {
  background: #0d1117 !important;
}

/* ── Custom node ───────────────────────────────────────────────────── */
.custom-node {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 6px;
  font-size: 11px;
  color: #e0e0e0;
  width: 200px;
  min-width: 160px;
  resize: horizontal;
  overflow: hidden;
}

/* Let React Flow node wrapper fit to the custom-node's size */
.react-flow__node-custom {
  width: auto !important;
  height: auto !important;
}

/* Title bar is the drag handle for moving the node */
.drag-handle {
  cursor: grab;
}
.drag-handle:active {
  cursor: grabbing;
}

/* Selected node — target via React Flow's wrapper class */
.react-flow__node.selected .custom-node {
  border-color: #90caf9;
  box-shadow: 0 0 0 1px #90caf9, 0 0 12px rgba(144, 202, 249, 0.4);
}

/* Selected edge */
.react-flow__edge.selected .react-flow__edge-path {
  stroke: #90caf9 !important;
  stroke-width: 3px !important;
  filter: drop-shadow(0 0 4px rgba(144, 202, 249, 0.6));
}

.node-title {
  padding: 5px 10px;
  font-weight: 600;
  font-size: 12px;
  color: white;
  border-radius: 5px 5px 0 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.3);
}

.node-body {
  padding: 4px 0;
}

.node-warning {
  padding: 3px 10px;
  font-size: 10px;
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.1);
  border-top: 1px solid rgba(251, 191, 36, 0.2);
  border-bottom: 1px solid rgba(251, 191, 36, 0.2);
}

/* ── I/O rows ──────────────────────────────────────────────────────── */
.io-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 12px;
  min-height: 22px;
  position: relative;
}

.io-left, .io-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.io-label {
  font-size: 10px;
  color: #94a3b8;
}

/* ── Handles ───────────────────────────────────────────────────────── */
.typed-handle {
  width: 10px !important;
  height: 10px !important;
  border: 2px solid #1e293b !important;
  border-radius: 50% !important;
}

/* ── Widget rows ───────────────────────────────────────────────────── */
.widget-row {
  padding: 3px 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
}

.widget-row-socket {
  padding-left: 20px;
}

.widget-row label {
  font-size: 10px;
  color: #64748b;
  min-width: 40px;
  flex-shrink: 0;
}

.widget-row input[type="text"],
.widget-row input[type="number"],
.widget-row select {
  background: #0f172a;
  color: #e0e0e0;
  border: 1px solid #334155;
  border-radius: 3px;
  padding: 2px 5px;
  font-size: 11px;
  flex: 1;
  min-width: 0;
}

.widget-row input[type="checkbox"] {
  accent-color: #3a7abf;
}

.widget-button {
  flex: 1;
  min-width: 0;
  background: #0f3460;
  color: #e0e0e0;
  border: 1px solid #334155;
  border-radius: 3px;
  padding: 4px 8px;
  font-size: 11px;
  cursor: pointer;
}

.widget-button:hover {
  background: #1a4a8a;
  border-color: #3a7abf;
}

.slider-control {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
}

.slider-input {
  flex: 1;
  min-width: 0;
  accent-color: #7dd3fc;
}

.slider-value {
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 10px;
  color: #cbd5e1;
  min-width: 52px;
  text-align: right;
}

.widget-row input:focus,
.widget-row select:focus {
  outline: none;
  border-color: #3a7abf;
}

.file-picker-row {
  display: flex;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.file-picker-row input {
  flex: 1;
  min-width: 0;
}

/* ── Draggable number ──────────────────────────────────────────────── */
.drag-number {
  flex: 1;
  min-width: 0;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 3px;
  padding: 2px 6px;
  cursor: ew-resize;
  user-select: none;
  text-align: center;
  font-size: 11px;
  color: #e0e0e0;
  touch-action: none;
}
.drag-number:hover {
  border-color: #3a7abf;
}
.drag-number-val {
  pointer-events: none;
}
.drag-number-edit {
  flex: 1;
  min-width: 0;
  background: #0f172a;
  border: 1px solid #3a7abf;
  border-radius: 3px;
  padding: 2px 5px;
  font-size: 11px;
  color: #e0e0e0;
  text-align: center;
  outline: none;
}

.browse-btn {
  background: #0f3460;
  color: #e0e0e0;
  border: 1px solid #334155;
  border-radius: 3px;
  padding: 2px 6px;
  font-size: 10px;
  cursor: pointer;
  white-space: nowrap;
}
.browse-btn:hover {
  background: #1a4a8a;
}

/* ── Collapsible section ───────────────────────────────────────────── */
.collapsible {
  border-top: 1px solid #334155;
  margin-top: 4px;
}
.collapsible-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  width: 100%;
  background: none;
  border: none;
  color: #64748b;
  font-size: 10px;
  padding: 3px 10px;
  cursor: pointer;
  text-align: left;
}
.collapsible-toggle:hover {
  color: #94a3b8;
}
.collapsible-arrow {
  font-size: 9px;
}

/* ── Node preview ──────────────────────────────────────────────────── */
.node-preview {
  overflow: hidden;
}

.node-preview img {
  width: 100%;
  max-width: 100%;
  display: block;
}

/* ── Cross-section overlay ────────────────────────────────────────── */
.cs-overlay {
  position: relative;
  user-select: none;
  touch-action: none;
  overflow: hidden;
}
.cs-image {
  width: 100%;
  display: block;
}
.cs-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.cs-marker {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffd700;
  border: 2px solid #fff;
  transform: translate(-50%, -50%);
  cursor: grab;
  box-shadow: 0 0 4px rgba(0,0,0,0.6);
  z-index: 1;
}
.cs-marker:active:not(.cs-marker-locked) {
  cursor: grabbing;
  background: #ffeb3b;
  transform: translate(-50%, -50%) scale(1.2);
}
.cs-marker-locked {
  background: #e91e63;
  border-color: #e91e63;
  cursor: default;
  opacity: 0.9;
}

.lineplot-overlay {
  width: 100%;
  aspect-ratio: 32 / 22;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 6px;
  overflow: hidden;
  user-select: none;
  touch-action: none;
}

.lineplot-svg {
  display: block;
  width: 100%;
  height: 100%;
}

.lineplot-marker {
  fill: #ffd700;
  stroke: #fff;
  stroke-width: 2px;
  cursor: grab;
  filter: drop-shadow(0 0 4px rgba(0, 0, 0, 0.45));
}

.lineplot-marker:active {
  cursor: grabbing;
}

.lineplot-marker-locked {
  fill: #e91e63;
  stroke: #e91e63;
  cursor: default;
}

.crop-overlay {
  position: relative;
  user-select: none;
  touch-action: none;
  overflow: hidden;
}

.crop-image {
  width: 100%;
  display: block;
}

.crop-dim {
  position: absolute;
  background: rgba(2, 6, 23, 0.58);
  pointer-events: none;
}

.crop-rect {
  position: absolute;
  border: 2px solid #7dd3fc;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
  background: transparent;
  pointer-events: none;
}

.crop-marker {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #7dd3fc;
  border: 2px solid #fff;
  transform: translate(-50%, -50%);
  cursor: grab;
  box-shadow: 0 0 4px rgba(0,0,0,0.6);
  z-index: 1;
}

.crop-marker:active:not(.crop-marker-locked) {
  cursor: grabbing;
  background: #bae6fd;
  transform: translate(-50%, -50%) scale(1.15);
}

.crop-marker-locked {
  background: #e91e63;
  border-color: #e91e63;
  cursor: default;
  opacity: 0.9;
}

/* ── 3D surface view ──────────────────────────────────────────────── */
.surface-view-container {
  width: 100%;
  aspect-ratio: 1 / 1;
  cursor: grab;
  overflow: hidden;
}
.surface-view-container:active {
  cursor: grabbing;
}
.surface-view-container canvas {
  display: block;
}

/* ── Node table ────────────────────────────────────────────────────── */
.node-table-wrap {
  padding: 4px 10px 8px;
}

.node-table-scroll {
  max-height: 220px;
  overflow: auto;
  border: 1px solid #334155;
  border-radius: 6px;
  background: #0f172a;
}

.node-table-grid {
  width: 100%;
  border-collapse: collapse;
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 10px;
  color: #cbd5e1;
}

.node-table-grid th,
.node-table-grid td {
  padding: 6px 8px;
  border-bottom: 1px solid rgba(51, 65, 85, 0.75);
  white-space: nowrap;
  text-align: left;
  vertical-align: top;
}

.node-table-grid thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #16213e;
  color: #94a3b8;
  font-size: 9px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.node-table-grid tbody tr:nth-child(even) {
  background: rgba(30, 41, 59, 0.38);
}

.node-table-grid tbody tr:last-child td {
  border-bottom: none;
}

.node-table-num {
  text-align: right !important;
}

/* ── Node resize handles ───────────────────────────────────────────── */
.node-resize-line {
  border-color: #90caf9 !important;
}
.node-resize-handle {
  background: #90caf9 !important;
  width: 8px !important;
  height: 8px !important;
}

/* ── Context menu ──────────────────────────────────────────────────── */
.context-menu {
  position: fixed;
  z-index: 1000;
  background: #16213e;
  border: 1px solid #0f3460;
  border-radius: 6px;
  min-width: 180px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  padding: 4px 0;
}

.ctx-title {
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  color: #94a3b8;
  border-bottom: 1px solid #0f3460;
}

.ctx-search-row {
  padding: 6px 8px;
  border-bottom: 1px solid #0f3460;
}
.ctx-search {
  width: 100%;
  background: #0f172a;
  color: #e0e0e0;
  border: 1px solid #334155;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  outline: none;
}
.ctx-search:focus {
  border-color: #3a7abf;
}
.ctx-search::placeholder {
  color: #475569;
}

.ctx-list {
  max-height: 50vh;
  overflow-y: auto;
}

/* ── Category leaf items ── */
.ctx-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 12px;
  font-size: 12px;
  cursor: pointer;
  color: #e0e0e0;
}
.ctx-cat-item:hover,
.ctx-cat-active {
  background: #0f3460;
}
.ctx-cat-label {
  text-transform: capitalize;
}
.ctx-cat-arrow {
  font-size: 8px;
  color: #64748b;
  margin-left: 12px;
  flex-shrink: 0;
}
.ctx-cat-active .ctx-cat-arrow {
  color: #e0e0e0;
}

/* ── Submenu panel (separate fixed-position sibling) ── */
.ctx-submenu {
  position: fixed;
  max-height: 50vh;
  overflow-y: auto;
}

.context-item {
  padding: 5px 20px;
  font-size: 12px;
  cursor: pointer;
  color: #e0e0e0;
  white-space: nowrap;
}
.context-item:hover {
  background: #0f3460;
}

/* ── File browser dialog ──────────────────────────────────────────── */
.fb-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.fb-dialog {
  background: #16213e;
  border: 1px solid #0f3460;
  border-radius: 8px;
  width: 520px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}
.fb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid #0f3460;
}
.fb-path {
  font-size: 12px;
  color: #90caf9;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  margin-right: 10px;
}
.fb-close {
  background: none;
  border: none;
  color: #e0e0e0;
  font-size: 16px;
  cursor: pointer;
  padding: 2px 6px;
}
.fb-close:hover { color: #e94560; }
.fb-list {
  overflow-y: auto;
  padding: 6px 0;
  flex: 1;
}
.fb-entry {
  padding: 6px 14px;
  cursor: pointer;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.fb-entry:hover { background: #0f3460; }
.fb-dir  { color: #90caf9; }
.fb-file { color: #e0e0e0; }
.fb-loading {
  padding: 16px;
  text-align: center;
  color: #607d8b;
}

/* ── Scrollbar styling ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #1a1a2e; }
::-webkit-scrollbar-thumb { background: #0f3460; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3a7abf; }

/* ── React Flow MiniMap ────────────────────────────────────────────── */
.react-flow__minimap {
  background: #16213e !important;
  border: 1px solid #0f3460 !important;
  border-radius: 4px !important;
}