/* ═══════════════════════════════════════════════════════════════
   CNC Cut Optimiser — Cutting Tools Tab
   Professional sheet nesting & cut optimisation UI
   ═══════════════════════════════════════════════════════════════ */

/* ─── Layout Shell ─────────────────────────────────────────── */
.cutting-app {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 120px);
  min-height: 500px;
  background: var(--bg-primary);
  overflow: hidden;
}

/* Step indicator bar */
.cutting-steps {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.cutting-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  position: relative;
  user-select: none;
}

.cutting-step:hover {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.cutting-step.active {
  background: var(--accent-bg, rgba(74, 144, 217, 0.12));
  color: var(--accent, #4A90D9);
  font-weight: 600;
}

.cutting-step.completed {
  color: var(--success, #50B86C);
}

.cutting-step-number {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  border: 2px solid var(--border);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.cutting-step.active .cutting-step-number {
  background: var(--accent, #4A90D9);
  color: #fff;
  border-color: var(--accent, #4A90D9);
}

.cutting-step.completed .cutting-step-number {
  background: var(--success, #50B86C);
  color: #fff;
  border-color: var(--success, #50B86C);
}

.cutting-step-arrow {
  color: var(--text-muted);
  opacity: 0.3;
  margin: 0 4px;
  font-size: 11px;
}

/* ─── Workspace (main content area) ───────────────────────── */
.cutting-workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

.cutting-main {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  min-width: 0;
}

.cutting-preview-panel {
  width: 380px;
  border-left: 1px solid var(--border);
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.cutting-preview-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cutting-preview-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

/* ─── Bottom Status Bar ───────────────────────────────────── */
.cutting-status-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 8px 20px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.cutting-status-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.cutting-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}

.cutting-status-dot.good { background: var(--success, #50B86C); }
.cutting-status-dot.warn { background: var(--warning, #E8A838); }
.cutting-status-dot.bad  { background: var(--danger, #D94A6E); }

/* ─── Card System (cutting-specific) ─────────────────────── */
.cut-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
}

.cut-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-tertiary);
}

.cut-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.cut-card-title svg {
  opacity: 0.6;
}

.cut-card-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.cut-card-body {
  padding: 18px;
}

.cut-card-body.no-pad {
  padding: 0;
}

/* ─── Parts Table ─────────────────────────────────────────── */
.parts-table-container {
  overflow-x: auto;
  border-radius: 0 0 12px 12px;
}

.parts-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.parts-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
}

.parts-table th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  user-select: none;
}

.parts-table th.sortable {
  cursor: pointer;
}

.parts-table th.sortable:hover {
  color: var(--text-primary);
}

.parts-table td {
  padding: 4px 6px;
  border-bottom: 1px solid var(--border-light, rgba(255,255,255,0.04));
  vertical-align: middle;
  position: relative;
}

.parts-table tr:hover td {
  background: var(--bg-tertiary);
}

.parts-table tr.selected td {
  background: var(--accent-bg, rgba(74, 144, 217, 0.08));
}

.parts-table tr.has-error td {
  background: rgba(217, 74, 110, 0.06);
}

.parts-table tr.has-warning td {
  background: rgba(232, 168, 56, 0.06);
}

/* Inline editable cells */
.parts-table .cell-input {
  width: 100%;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 6px 8px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text-primary);
  transition: border-color 0.15s;
}

.parts-table .cell-input:focus {
  outline: none;
  border-color: var(--accent, #4A90D9);
  background: var(--bg-primary);
}

.parts-table .cell-input.num {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}

.parts-table .cell-input.invalid {
  border-color: var(--danger, #D94A6E);
  background: rgba(217, 74, 110, 0.06);
}

/* Row number + checkbox column */
.parts-table .row-num {
  width: 44px;
  text-align: center;
  color: var(--text-muted);
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  padding: 4px 8px;
}

.parts-table .row-checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--accent, #4A90D9);
  cursor: pointer;
}

/* Qty stepper */
.qty-stepper {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  height: 30px;
}

.qty-stepper button {
  width: 26px;
  height: 100%;
  background: var(--bg-tertiary);
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.qty-stepper button:hover {
  background: var(--accent-bg, rgba(74,144,217,0.15));
  color: var(--accent, #4A90D9);
}

.qty-stepper input {
  width: 36px;
  text-align: center;
  border: none;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  background: transparent;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-primary);
  height: 100%;
}

.qty-stepper input:focus {
  outline: none;
  background: var(--bg-primary);
}

/* Grain selector */
.grain-selector {
  display: flex;
  gap: 2px;
  background: var(--bg-tertiary);
  border-radius: 6px;
  padding: 2px;
}

.grain-btn {
  width: 28px;
  height: 26px;
  border: none;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.15s;
}

.grain-btn:hover {
  background: var(--bg-primary);
}

.grain-btn.active {
  background: var(--accent, #4A90D9);
  color: #fff;
}

.grain-btn svg {
  width: 14px;
  height: 14px;
}

/* Edge banding visual selector */
.edge-banding-visual {
  display: inline-flex;
  position: relative;
  width: 44px;
  height: 34px;
  cursor: pointer;
}

.edge-banding-rect {
  width: 100%;
  height: 100%;
  border: 2px solid var(--border);
  border-radius: 3px;
  position: relative;
  background: var(--bg-primary);
}

.edge-banding-rect .edge {
  position: absolute;
  background: transparent;
  transition: background 0.15s;
}

.edge-banding-rect .edge.active {
  background: var(--accent, #4A90D9);
}

.edge-banding-rect .edge-top {
  top: -2px; left: 2px; right: 2px; height: 3px;
  border-radius: 2px 2px 0 0;
}

.edge-banding-rect .edge-bottom {
  bottom: -2px; left: 2px; right: 2px; height: 3px;
  border-radius: 0 0 2px 2px;
}

.edge-banding-rect .edge-left {
  top: 2px; bottom: 2px; left: -2px; width: 3px;
  border-radius: 2px 0 0 2px;
}

.edge-banding-rect .edge-right {
  top: 2px; bottom: 2px; right: -2px; width: 3px;
  border-radius: 0 2px 2px 0;
}

/* Edge banding popup */
.edge-banding-popup {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 8px;
  z-index: 100;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  min-width: 200px;
  display: none;
}

.edge-banding-popup.open {
  display: block;
}

.edge-banding-popup .eb-visual {
  width: 120px;
  height: 80px;
  margin: 0 auto 12px;
  border: 2px solid var(--border);
  border-radius: 4px;
  position: relative;
  background: var(--bg-primary);
}

.edge-banding-popup .eb-edge {
  position: absolute;
  cursor: pointer;
  transition: all 0.15s;
}

.edge-banding-popup .eb-edge:hover {
  opacity: 0.7;
}

.edge-banding-popup .eb-edge.active {
  background: var(--accent, #4A90D9) !important;
}

.edge-banding-popup .eb-top {
  top: -4px; left: 8px; right: 8px; height: 6px;
  background: var(--border);
  border-radius: 3px;
}

.edge-banding-popup .eb-bottom {
  bottom: -4px; left: 8px; right: 8px; height: 6px;
  background: var(--border);
  border-radius: 3px;
}

.edge-banding-popup .eb-left {
  left: -4px; top: 8px; bottom: 8px; width: 6px;
  background: var(--border);
  border-radius: 3px;
}

.edge-banding-popup .eb-right {
  right: -4px; top: 8px; bottom: 8px; width: 6px;
  background: var(--border);
  border-radius: 3px;
}

.edge-banding-popup .eb-label {
  text-align: center;
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Material color chip */
.material-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.material-chip .chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* ─── Stock Sheet Cards ───────────────────────────────────── */
.sheet-preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.sheet-preset-card {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--bg-primary);
}

.sheet-preset-card:hover {
  border-color: var(--accent, #4A90D9);
  background: var(--accent-bg, rgba(74,144,217,0.06));
}

.sheet-preset-card.selected {
  border-color: var(--accent, #4A90D9);
  background: var(--accent-bg, rgba(74,144,217,0.1));
  box-shadow: 0 0 0 1px var(--accent, #4A90D9);
}

.sheet-preset-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.sheet-preset-dims {
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.stock-sheet-entry {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  margin-bottom: 8px;
  transition: border-color 0.15s;
}

.stock-sheet-entry:hover {
  border-color: var(--border-hover, rgba(255,255,255,0.12));
}

.stock-sheet-entry .sheet-color {
  width: 4px;
  height: 48px;
  border-radius: 2px;
  flex-shrink: 0;
}

.stock-sheet-entry .sheet-info {
  flex: 1;
  min-width: 0;
}

.stock-sheet-entry .sheet-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.stock-sheet-entry .sheet-dims {
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  margin-top: 2px;
}

.stock-sheet-entry .sheet-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ─── Settings Panel ──────────────────────────────────────── */
.cut-settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.cut-setting {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cut-setting-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.cut-setting-help {
  font-size: 11px;
  color: var(--text-muted);
  opacity: 0.7;
  line-height: 1.4;
}

.cut-setting input[type="number"],
.cut-setting select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.cut-setting input[type="number"]:focus,
.cut-setting select:focus {
  outline: none;
  border-color: var(--accent, #4A90D9);
}

.cut-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.cut-toggle-track {
  width: 36px;
  height: 20px;
  border-radius: 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  position: relative;
  transition: all 0.2s;
  flex-shrink: 0;
}

.cut-toggle-track.on {
  background: var(--accent, #4A90D9);
  border-color: var(--accent, #4A90D9);
}

.cut-toggle-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  top: 1px;
  left: 1px;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.cut-toggle-track.on .cut-toggle-thumb {
  transform: translateX(16px);
}

.cut-toggle-label {
  font-size: 13px;
  color: var(--text-primary);
}

/* ─── Results / SVG Viewer ────────────────────────────────── */
.cutting-results-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sheet-result-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.sheet-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.sheet-result-title {
  font-weight: 600;
  color: var(--text-primary);
}

.sheet-result-stats {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

.sheet-result-stats .stat-value {
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
}

.sheet-svg-container {
  padding: 16px;
  overflow: hidden;
  cursor: grab;
  position: relative;
  background: var(--bg-primary);
  min-height: 300px;
}

.sheet-svg-container:active {
  cursor: grabbing;
}

.sheet-svg-container svg {
  width: 100%;
  height: auto;
  display: block;
}

/* SVG part colours */
.svg-part { transition: opacity 0.15s; }
.svg-part:hover { opacity: 0.85; cursor: pointer; }
.svg-part.highlighted { stroke: #fff; stroke-width: 2; }

.svg-waste { fill: url(#wastePattern); opacity: 0.5; }
.svg-remnant { fill: var(--remnant-fill, #E0F0FF); stroke: var(--remnant-border, #4A90D9); stroke-width: 1; stroke-dasharray: 4 2; }
.svg-trim { fill: var(--trim-zone, #FFE0E0); opacity: 0.3; }
.svg-kerf { stroke: #CC0000; stroke-width: 0.5; stroke-dasharray: 2 1; opacity: 0.6; }

.svg-dimension-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  fill: var(--dimension-text, #333);
}

.svg-part-label {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 600;
  fill: #fff;
  pointer-events: none;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

/* Part tooltip */
.cut-tooltip {
  position: fixed;
  z-index: 1000;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  font-size: 12px;
  line-height: 1.6;
  pointer-events: none;
  max-width: 280px;
  display: none;
}

.cut-tooltip.visible { display: block; }

.cut-tooltip .tt-title {
  font-weight: 600;
  font-size: 13px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cut-tooltip .tt-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--text-muted);
}

.cut-tooltip .tt-row .tt-val {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
}

/* ─── Summary Cards ───────────────────────────────────────── */
.cut-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.cut-summary-stat {
  background: var(--bg-tertiary);
  border-radius: 10px;
  padding: 14px 16px;
  text-align: center;
}

.cut-summary-value {
  font-size: 22px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  line-height: 1.2;
}

.cut-summary-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.cut-summary-stat.good .cut-summary-value { color: var(--success, #50B86C); }
.cut-summary-stat.warn .cut-summary-value { color: var(--warning, #E8A838); }
.cut-summary-stat.bad  .cut-summary-value  { color: var(--danger, #D94A6E); }

/* Utilisation bar */
.utilisation-bar {
  height: 8px;
  border-radius: 4px;
  background: var(--bg-primary);
  overflow: hidden;
  margin-top: 6px;
}

.utilisation-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s ease;
}

.utilisation-bar-fill.good { background: var(--success, #50B86C); }
.utilisation-bar-fill.ok   { background: var(--warning, #E8A838); }
.utilisation-bar-fill.bad  { background: var(--danger, #D94A6E); }

/* ─── Cost Breakdown ──────────────────────────────────────── */
.cost-table {
  width: 100%;
  font-size: 13px;
  border-collapse: collapse;
}

.cost-table td {
  padding: 6px 0;
  color: var(--text-secondary);
}

.cost-table td:last-child {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: var(--text-primary);
}

.cost-table tr.cost-divider td {
  padding: 0;
  border-top: 1px solid var(--border);
}

.cost-table tr.cost-total td {
  font-size: 15px;
  font-weight: 700;
  padding-top: 10px;
  color: var(--text-primary);
}

/* ─── Import/Export ────────────────────────────────────────── */
.import-drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-primary);
}

.import-drop-zone:hover,
.import-drop-zone.drag-over {
  border-color: var(--accent, #4A90D9);
  background: var(--accent-bg, rgba(74,144,217,0.06));
}

.import-drop-zone .idz-icon {
  font-size: 32px;
  margin-bottom: 8px;
  opacity: 0.4;
}

.import-drop-zone .idz-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.import-drop-zone .idz-hint {
  font-size: 12px;
  color: var(--text-muted);
}

/* Column mapping UI */
.column-map-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.column-map-table th {
  padding: 8px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 10px;
}

.column-map-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border-light, rgba(255,255,255,0.04));
}

/* ─── Project Management ──────────────────────────────────── */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.project-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-primary);
  cursor: pointer;
  transition: border-color 0.15s;
}

.project-item:hover {
  border-color: var(--accent, #4A90D9);
}

.project-item-info {
  flex: 1;
  min-width: 0;
}

.project-item-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.project-item-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ─── What-if Scenario ────────────────────────────────────── */
.scenario-compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px;
}

.scenario-column {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.scenario-column.winner {
  border-color: var(--success, #50B86C);
  box-shadow: 0 0 0 1px var(--success, #50B86C);
}

.scenario-column-header {
  padding: 10px 14px;
  background: var(--bg-tertiary);
  font-size: 13px;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}

.scenario-column-body {
  padding: 14px;
}

/* ─── Workshop Mode ───────────────────────────────────────── */
.cutting-app.workshop-mode {
  --text-primary: #000;
  --text-secondary: #333;
  --text-muted: #555;
  --bg-primary: #fff;
  --bg-secondary: #f0f0f0;
  --bg-tertiary: #e0e0e0;
  --border: #999;
}

.cutting-app.workshop-mode .svg-part-label {
  font-size: 24px;
  font-weight: 700;
  fill: #000;
}

.cutting-app.workshop-mode .svg-part {
  stroke: #000;
  stroke-width: 3;
}

.cutting-app.workshop-mode .svg-dimension-text {
  font-size: 20px;
  font-weight: 700;
  fill: #000;
}

.cutting-app.workshop-mode .cut-btn,
.cutting-app.workshop-mode button {
  min-height: 52px;
  min-width: 52px;
  font-size: 16px;
  font-weight: 700;
}

.cutting-app.workshop-mode .cell-input,
.cutting-app.workshop-mode input,
.cutting-app.workshop-mode select {
  min-height: 48px;
  font-size: 18px;
}

.cutting-app.workshop-mode .parts-table td {
  min-height: 48px;
}

.cutting-app.workshop-mode .sheet-result-header {
  font-size: 18px;
}

/* ─── Buttons (cutting-specific) ──────────────────────────── */
.cut-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
  white-space: nowrap;
}

.cut-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover, rgba(255,255,255,0.15));
}

.cut-btn svg { width: 14px; height: 14px; }

.cut-btn-primary {
  background: var(--accent, #4A90D9);
  border-color: var(--accent, #4A90D9);
  color: #fff;
}

.cut-btn-primary:hover {
  background: var(--accent-hover, #3a7bc0);
  border-color: var(--accent-hover, #3a7bc0);
}

.cut-btn-success {
  background: var(--success, #50B86C);
  border-color: var(--success, #50B86C);
  color: #fff;
}

.cut-btn-danger {
  background: transparent;
  border-color: var(--danger, #D94A6E);
  color: var(--danger, #D94A6E);
}

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

.cut-btn-lg {
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
}

.cut-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ─── Modals ──────────────────────────────────────────────── */
.cut-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.cut-modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.cut-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 14px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.cut-modal-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cut-modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.cut-modal-close {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.cut-modal-close:hover {
  background: var(--bg-tertiary);
}

.cut-modal-body {
  padding: 20px;
}

.cut-modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ─── Toast Notifications ─────────────────────────────────── */
.cut-toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cut-toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  font-size: 13px;
  animation: cutToastIn 0.3s ease;
  max-width: 360px;
}

.cut-toast.success { border-left: 3px solid var(--success, #50B86C); }
.cut-toast.error   { border-left: 3px solid var(--danger, #D94A6E); }
.cut-toast.warning { border-left: 3px solid var(--warning, #E8A838); }
.cut-toast.info    { border-left: 3px solid var(--accent, #4A90D9); }

@keyframes cutToastIn {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ─── Empty States ────────────────────────────────────────── */
.cut-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
}

.cut-empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.15;
}

.cut-empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cut-empty-text {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 400px;
  line-height: 1.5;
}

/* ─── Dimension input with unit suffix ────────────────────── */
.dim-input-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-primary);
}

.dim-input-group input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 7px 8px;
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  min-width: 0;
  text-align: right;
}

.dim-input-group input:focus { outline: none; }

.dim-input-group .dim-unit {
  padding: 0 8px;
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  height: 100%;
  display: flex;
  align-items: center;
  border-left: 1px solid var(--border);
  min-height: 32px;
}

/* ─── Tab-specific dimension mode toggle ──────────────────── */
.dim-mode-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 12px;
}

.dim-mode-btn {
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  transition: all 0.15s;
}

.dim-mode-btn.active {
  background: var(--accent, #4A90D9);
  color: #fff;
}

/* ─── Optimise Button (prominent) ─────────────────────────── */
.optimise-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, #4A90D9, #3CBFA0);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.optimise-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(74, 144, 217, 0.4);
}

.optimise-btn:active {
  transform: translateY(0);
}

.optimise-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.optimise-btn .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: none;
}

.optimise-btn.running .spinner { display: block; }
.optimise-btn.running .btn-text { display: none; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Export bar ───────────────────────────────────────────── */
.export-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: var(--bg-tertiary);
  border-radius: 10px;
  flex-wrap: wrap;
}

.export-bar-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 4px;
}

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .cutting-workspace {
    flex-direction: column;
  }
  .cutting-preview-panel {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--border);
    max-height: 300px;
  }
  .cut-settings-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .cutting-steps {
    overflow-x: auto;
    padding: 8px 12px;
  }
  .cutting-step {
    padding: 6px 10px;
    font-size: 12px;
  }
  .cutting-step span:not(.cutting-step-number) {
    display: none;
  }
  .cutting-main {
    padding: 12px;
  }
  .cutting-preview-panel {
    display: none;
  }
  .cut-summary-grid {
    grid-template-columns: 1fr 1fr;
  }
  .sheet-preset-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ─── Print ───────────────────────────────────────────────── */
@media print {
  .cutting-steps,
  .cutting-status-bar,
  .cutting-preview-panel,
  .cut-card-actions,
  .cut-btn,
  .optimise-btn,
  .export-bar,
  .header,
  .tab-bar {
    display: none !important;
  }
  .cutting-app {
    height: auto;
    overflow: visible;
  }
  .cutting-main {
    overflow: visible;
    padding: 0;
  }
  .sheet-result-card {
    break-inside: avoid;
    page-break-inside: avoid;
    margin-bottom: 20px;
  }
  .sheet-svg-container {
    background: #fff;
  }
  .svg-part-label {
    fill: #000;
  }
}

/* ═══════════════════════════════════════════════════════════════
   MATERIAL GROUP TAB BAR
   ═══════════════════════════════════════════════════════════════ */
.mg-tab-bar {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  overflow-x: auto;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--border);
}

.mg-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 8px 8px 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  transition: all 0.15s;
  white-space: nowrap;
  position: relative;
  margin-bottom: -2px;
}

.mg-tab:hover {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.mg-tab.active {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-weight: 600;
  border-color: var(--border);
}

.mg-tab-indicator {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent, #4A90D9);
}

.mg-tab-colour {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.mg-tab-name {
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mg-tab-count {
  font-size: 10px;
  opacity: 0.6;
  font-family: 'JetBrains Mono', monospace;
}

.mg-tab-add {
  color: var(--accent, #4A90D9);
  font-weight: 500;
}

.mg-tab-add:hover {
  background: var(--accent-bg, rgba(74,144,217,0.1));
}

/* ═══════════════════════════════════════════════════════════════
   INTERACTIVE LAYOUT EDITOR
   ═══════════════════════════════════════════════════════════════ */

/* Editor toolbar */
.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--accent, #4A90D9);
  border-radius: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.editor-toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.editor-toolbar-sep {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 4px;
}

/* Snap toggles */
.editor-snap-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
  border: 1px solid transparent;
}

.editor-snap-toggle:hover {
  background: var(--bg-primary);
}

.editor-snap-toggle.on {
  color: var(--accent, #4A90D9);
  background: var(--accent-bg, rgba(74,144,217,0.1));
  border-color: var(--accent, #4A90D9);
}

.editor-snap-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.15s;
}

.editor-snap-toggle.on .editor-snap-dot {
  background: var(--accent, #4A90D9);
}

/* Sheet tabs */
.editor-sheet-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.editor-sheet-tab {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px 8px 0 0;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  user-select: none;
  background: var(--bg-secondary);
}

.editor-sheet-tab:hover {
  background: var(--bg-tertiary);
}

.editor-sheet-tab.active {
  background: var(--bg-primary);
  border-bottom-color: var(--bg-primary);
  font-weight: 600;
  color: var(--text-primary);
}

.editor-sheet-tab.drop-target {
  background: var(--accent-bg, rgba(74,144,217,0.15));
  border-color: var(--accent, #4A90D9);
  box-shadow: 0 0 0 2px var(--accent, #4A90D9);
}

.editor-tab-util {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  margin-left: 6px;
}

/* Editor SVG */
.editor-svg {
  cursor: default;
}

.editor-part {
  transition: filter 0.1s;
}

.editor-part:hover {
  filter: brightness(1.15);
}

.editor-part.locked {
  cursor: not-allowed !important;
}

.editor-ghost {
  pointer-events: none;
}

/* Context menu */
.editor-context-menu {
  position: fixed;
  z-index: 200000;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  min-width: 180px;
  overflow: hidden;
  animation: ctxIn 0.15s ease;
}

@keyframes ctxIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.editor-ctx-header {
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  background: var(--bg-tertiary);
}

.editor-ctx-item {
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.1s;
}

.editor-ctx-item:hover {
  background: var(--accent-bg, rgba(74,144,217,0.1));
  color: var(--text-primary);
}

.editor-ctx-sep {
  height: 1px;
  background: var(--border);
  margin: 2px 0;
}

/* Edit mode indicator on sheet cards */
.editor-active .sheet-svg-container {
  border: 2px solid var(--accent, #4A90D9);
  border-radius: 8px;
  background: var(--bg-primary);
}

@media print {
  .editor-toolbar,
  .editor-sheet-tabs,
  .editor-context-menu {
    display: none !important;
  }
}

/* ═══════════════════════════════════════════════════════════════
   MODEL EXPLORER
   ═══════════════════════════════════════════════════════════════ */
.explorer-overlay {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.explorer-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.explorer-topbar-left { display: flex; align-items: center; gap: 12px; }
.explorer-topbar-right { display: flex; align-items: center; gap: 16px; }
.explorer-title { font-size: 16px; font-weight: 700; }
.explorer-filename { font-size: 12px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }
.explorer-stat { font-size: 11px; color: var(--text-muted); padding: 3px 8px; background: var(--bg-tertiary); border-radius: 4px; }

.explorer-scale-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(232,168,56,0.1);
  border-bottom: 1px solid var(--warning);
  flex-shrink: 0;
}

.explorer-scale-info { font-size: 12px; }
.explorer-scale-actions { display: flex; gap: 6px; }

.explorer-warning {
  padding: 6px 16px;
  background: rgba(232,168,56,0.08);
  border-bottom: 1px solid rgba(232,168,56,0.2);
  font-size: 11px;
  color: var(--warning);
}

.explorer-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.explorer-list-panel {
  width: 55%;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.explorer-viewer-panel {
  width: 45%;
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--bg-tertiary);
  overflow: hidden;
}

.explorer-controls {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.explorer-search {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 12px;
}

.explorer-sort {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 11px;
}

.explorer-cat-tabs {
  display: flex;
  gap: 2px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  overflow-x: auto;
}

.explorer-cat-tab {
  padding: 4px 10px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
  border-radius: 4px;
  white-space: nowrap;
  transition: all 0.15s;
}

.explorer-cat-tab:hover { background: var(--bg-tertiary); }
.explorer-cat-tab.active { background: var(--accent-bg, rgba(74,144,217,0.12)); color: var(--accent); font-weight: 600; }

.explorer-bulk-actions {
  display: flex;
  gap: 4px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.explorer-parts-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px;
}

.explorer-empty { padding: 32px; text-align: center; color: var(--text-muted); font-size: 13px; }

/* Explorer groups */
.explorer-group { margin-bottom: 2px; }
.explorer-group.collapsed .explorer-group-body { display: none; }
.explorer-group.collapsed .explorer-group-arrow { transform: rotate(-90deg); }

.explorer-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  user-select: none;
}

.explorer-group-arrow { font-size: 10px; transition: transform 0.15s; }
.explorer-group-count { font-size: 10px; color: var(--text-muted); font-weight: 400; }

/* Explorer part items */
.explorer-part-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.1s;
  margin: 2px 0;
}

.explorer-part-item:hover { background: var(--bg-tertiary); }
.explorer-part-item.checked { background: rgba(74,144,217,0.06); }
.explorer-part-item.highlighted { background: rgba(74,144,217,0.12); box-shadow: inset 2px 0 0 var(--accent); }

.explorer-part-check { padding-top: 2px; }
.explorer-part-check input { width: 16px; height: 16px; accent-color: var(--accent); }

.explorer-part-info { flex: 1; min-width: 0; }
.explorer-part-name { font-size: 13px; font-weight: 500; display: flex; align-items: center; gap: 6px; }
.explorer-part-dims { font-size: 11px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; margin-top: 2px; }
.explorer-part-material { font-size: 10px; color: var(--text-muted); margin-top: 1px; }
.explorer-part-warn { font-size: 10px; color: var(--warning); margin-top: 2px; }

.explorer-instance-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 4px;
}

.explorer-non-std {
  font-size: 9px;
  color: var(--warning);
  padding: 1px 4px;
  border: 1px solid var(--warning);
  border-radius: 3px;
  margin-left: 4px;
}

.explorer-thk-note { font-size: 10px; color: var(--text-muted); margin-left: 4px; }

.explorer-part-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.explorer-cat-select {
  padding: 2px 4px;
  font-size: 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-primary);
  color: var(--text-primary);
}

.explorer-cat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Viewer */
.explorer-viewer-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.explorer-viewer-loading {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

.explorer-viewer-info {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  z-index: 10;
}

.explorer-fallback { display: flex; flex-direction: column; width: 100%; height: 100%; }
.explorer-fallback-tabs { display: flex; gap: 4px; padding: 8px; flex-shrink: 0; }
.explorer-fb-tab {
  padding: 4px 12px; border: 1px solid var(--border); border-radius: 4px;
  background: transparent; color: var(--text-muted); font-size: 11px; cursor: pointer;
}
.explorer-fb-tab.active { background: var(--accent-bg); color: var(--accent); border-color: var(--accent); }
.explorer-fallback-img { flex: 1; object-fit: contain; width: 100%; }

/* Footer */
.explorer-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .explorer-body { flex-direction: column; }
  .explorer-list-panel { width: 100%; max-height: 60vh; border-right: none; border-bottom: 1px solid var(--border); }
  .explorer-viewer-panel { width: 100%; }
}

@media (max-width: 768px) {
  .explorer-topbar-right { display: none; }
  .explorer-list-panel { max-height: 70vh; }
  .explorer-viewer-panel { max-height: 30vh; }
}

@media print {
  .explorer-overlay { display: none !important; }
}


/* ═══════════════════════════════════════════════════════════════
   EXPLORER VISUAL FEATURES
   ═══════════════════════════════════════════════════════════════ */
.explorer-right-tabs { display:flex; gap:2px; padding:8px 12px 0; border-bottom:1px solid rgba(255,255,255,0.1); flex-shrink:0; }
.explorer-tab-btn { padding:8px 16px; background:transparent; border:none; border-bottom:2px solid transparent; color:rgba(255,255,255,0.5); cursor:pointer; font-size:13px; font-family:inherit; transition:all 0.2s; }
.explorer-tab-btn.active { color:#fff; border-bottom-color:#4A90D9; }
.explorer-tab-btn:hover { color:rgba(255,255,255,0.8); }
.explorer-right-content { padding:12px; overflow-y:auto; flex:1; }

.explorer-2d-views { display:flex; flex-direction:column; gap:12px; }
.explorer-2d-view { border:1px solid rgba(255,255,255,0.08); border-radius:6px; overflow:hidden; }
.explorer-2d-title { padding:6px 10px; font-size:11px; font-weight:600; text-transform:uppercase; letter-spacing:0.5px; color:rgba(255,255,255,0.5); background:rgba(255,255,255,0.03); border-bottom:1px solid rgba(255,255,255,0.06); }
.explorer-2d-svg-container svg { display:block; width:100%; }
.explorer-2d-legend { display:flex; flex-wrap:wrap; gap:12px; padding:8px 0; font-size:11px; color:rgba(255,255,255,0.5); }
.legend-item { display:flex; align-items:center; gap:4px; }
.legend-dot { width:10px; height:10px; border-radius:2px; display:inline-block; }

.part-detail { display:flex; flex-direction:column; gap:14px; }
.part-detail-header h3 { margin:0; font-size:16px; font-weight:600; }
.part-detail-instance { font-size:12px; color:rgba(255,255,255,0.4); }
.part-detail-visuals { display:flex; gap:12px; align-items:flex-start; justify-content:center; flex-wrap:wrap; }
.part-detail-iso { flex-shrink:0; }
.part-detail-table { width:100%; font-size:13px; border-collapse:collapse; }
.part-detail-table td { padding:5px 8px; border-bottom:1px solid rgba(255,255,255,0.06); }
.part-detail-table td:first-child { color:rgba(255,255,255,0.45); width:100px; font-size:12px; }
.part-detail-table td:last-child { color:#fff; }
.part-detail-actions { display:flex; gap:6px; flex-wrap:wrap; }
.part-warn { font-size:12px; color:#E8A838; padding:4px 0; }

.explorer-part-thumb { flex-shrink:0; width:48px; height:48px; border-radius:4px; background:rgba(255,255,255,0.04); display:flex; align-items:center; justify-content:center; overflow:hidden; }
.explorer-part-thumb svg { width:48px; height:48px; }

.scale-confirmed-badge { display:inline-flex; align-items:center; gap:4px; padding:3px 10px; background:rgba(80,184,108,0.15); color:#50B86C; border:1px solid rgba(80,184,108,0.3); border-radius:4px; font-size:12px; font-weight:600; cursor:pointer; transition:all 0.2s; }
.scale-confirmed-badge:hover { background:rgba(80,184,108,0.25); }
.explorer-part-area { font-size:11px; color:rgba(255,255,255,0.3); margin-left:8px; }

/* Help System */
.help-icon { display:inline-flex; align-items:center; justify-content:center; width:18px; height:18px; border-radius:50%; background:rgba(255,255,255,0.08); color:rgba(255,255,255,0.4); font-size:11px; font-weight:700; cursor:help; margin-left:6px; transition:all 0.2s; user-select:none; vertical-align:middle; }
.help-icon:hover,.help-icon:focus { background:rgba(74,144,217,0.2); color:#4A90D9; }
.cut-help-tooltip { position:fixed; background:#1a1a2e; color:#fff; padding:8px 12px; border-radius:6px; font-size:13px; max-width:300px; line-height:1.4; box-shadow:0 4px 12px rgba(0,0,0,0.4); border:1px solid rgba(255,255,255,0.1); z-index:10000; pointer-events:none; display:none; }

/* Banding SVG markers on cut sheets */
.svg-banding-line { stroke:#E8A838; stroke-width:3; }

/* Gap 5: Loading skeleton animation */
@keyframes skeletonPulse { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* Gap 2: Touch targets */
@media (pointer:coarse) {
  .po-tab,.pe-tab{min-height:48px;padding:12px 16px}
  .po-toolbar button,.pe-tool-btn{min-height:44px;padding:8px 14px;font-size:13px}
  .editor-ctx-item{padding:14px 18px;font-size:15px}
}

/* Gap 9: Print B&W patterns */
@media print {
  .svg-banding-line{stroke:#000!important;stroke-width:5px!important}
  .svg-banding-marker{fill:#000!important;font-size:10px!important}
}

/* ═══════════════════════════════════════════════════════════════
   REDESIGNED NAVIGATION (2 tabs + gear)
   ═══════════════════════════════════════════════════════════════ */
.cut-nav { display:flex; align-items:center; justify-content:space-between; padding:0 16px; background:var(--bg-secondary); border-bottom:1px solid var(--border); flex-shrink:0; }
.cut-nav-tabs { display:flex; gap:0; }
.cut-nav-tab { display:flex; align-items:center; gap:8px; padding:14px 24px; border:none; background:transparent; color:var(--text-muted); font-size:14px; font-weight:500; cursor:pointer; border-bottom:3px solid transparent; transition:all 0.2s; font-family:inherit; }
.cut-nav-tab:hover { color:var(--text-secondary); background:rgba(255,255,255,0.03); }
.cut-nav-tab.active { color:var(--text-primary); border-bottom-color:var(--accent,#4A90D9); font-weight:600; }
.cut-nav-tab svg { opacity:0.6; }
.cut-nav-tab.active svg { opacity:1; }
.cut-nav-badge { font-size:10px; font-weight:700; padding:2px 7px; border-radius:10px; background:var(--bg-tertiary); color:var(--text-muted); font-family:'JetBrains Mono',monospace; }
.cut-nav-badge.good { background:rgba(80,184,108,0.15); color:#50B86C; }
.cut-nav-right { display:flex; align-items:center; gap:12px; }
.cut-nav-info { font-size:12px; color:var(--text-muted); }
.cut-nav-info.warn { color:var(--warning); }
.cut-nav-gear { width:40px; height:40px; border-radius:8px; border:1px solid var(--border); background:transparent; color:var(--text-muted); cursor:pointer; display:flex; align-items:center; justify-content:center; transition:all 0.2s; }
.cut-nav-gear:hover { background:var(--bg-tertiary); color:var(--text-primary); border-color:var(--accent); }

/* ═══════════════════════════════════════════════════════════════
   SETTINGS DRAWER (slide-in from right)
   ═══════════════════════════════════════════════════════════════ */
.settings-drawer { position:fixed; inset:0; z-index:500; pointer-events:none; }
.settings-drawer.open { pointer-events:all; }
.settings-drawer-backdrop { position:absolute; inset:0; background:rgba(0,0,0,0); transition:background 0.3s; }
.settings-drawer.open .settings-drawer-backdrop { background:rgba(0,0,0,0.5); }
.settings-drawer-panel { position:absolute; top:0; right:0; bottom:0; width:480px; max-width:90vw; background:var(--bg-secondary); border-left:1px solid var(--border); transform:translateX(100%); transition:transform 0.3s ease; display:flex; flex-direction:column; overflow:hidden; box-shadow:-8px 0 32px rgba(0,0,0,0.3); }
.settings-drawer.open .settings-drawer-panel { transform:translateX(0); }
.settings-drawer-header { display:flex; align-items:center; justify-content:space-between; padding:16px 20px; border-bottom:1px solid var(--border); flex-shrink:0; }
.settings-drawer-body { flex:1; overflow-y:auto; padding:16px 20px; }

.settings-section { margin-bottom:20px; }
.settings-section-title { display:flex; align-items:center; gap:8px; font-size:14px; font-weight:600; color:var(--text-primary); margin-bottom:10px; padding-bottom:8px; border-bottom:1px solid var(--border); }
.settings-section-body { padding-left:4px; }

/* Override old step bar to use new nav */
.cutting-steps { padding:0 !important; background:transparent !important; border-bottom:none !important; }

/* ═══════════════════════════════════════════════════════════════
   VISUAL POLISH — Professional upgrade
   ═══════════════════════════════════════════════════════════════ */

/* Base font size increase */
.cutting-app { font-size:14px; }

/* Better card styling */
.cut-card { border-radius:14px; box-shadow:0 2px 8px rgba(0,0,0,0.15); border-color:rgba(255,255,255,0.06); transition:box-shadow 0.2s; }
.cut-card:hover { box-shadow:0 4px 16px rgba(0,0,0,0.2); }
.cut-card-header { padding:16px 20px; border-radius:14px 14px 0 0; }
.cut-card-title { font-size:15px; }
.cut-card-body { padding:20px; }
.cut-card-body.no-pad { padding:0; }

/* Parts table improvements */
.parts-table th { padding:12px 14px; font-size:12px; }
.parts-table td { padding:6px 8px; }
.parts-table .cell-input { padding:8px 10px; font-size:14px; border-radius:6px; }
.parts-table .cell-input.num { font-size:13px; }
.parts-table .cell-input:focus { box-shadow:0 0 0 2px rgba(74,144,217,0.3); }

/* Better buttons */
.cut-btn { border-radius:8px; font-size:13px; padding:9px 16px; transition:all 0.15s; font-weight:500; }
.cut-btn:hover { transform:translateY(-1px); box-shadow:0 2px 8px rgba(0,0,0,0.15); }
.cut-btn:active { transform:translateY(0); }
.cut-btn-primary { box-shadow:0 2px 8px rgba(74,144,217,0.3); }
.cut-btn-primary:hover { box-shadow:0 4px 12px rgba(74,144,217,0.4); }

/* Optimise button glow */
.optimise-btn { border-radius:14px; font-size:17px; padding:18px; letter-spacing:0.3px; }

/* Better summary cards */
.cut-summary-grid { gap:14px; }
.cut-summary-stat { border-radius:12px; padding:18px 16px; }
.cut-summary-value { font-size:26px; }
.cut-summary-label { font-size:12px; margin-top:6px; }

/* Sheet result cards */
.sheet-result-card { border-radius:14px; box-shadow:0 2px 8px rgba(0,0,0,0.15); }
.sheet-result-header { padding:14px 20px; border-radius:14px 14px 0 0; }
.sheet-svg-container { padding:20px; border-radius:0 0 14px 14px; }

/* Smoother toast animations */
.cut-toast { border-radius:12px; box-shadow:0 8px 24px rgba(0,0,0,0.25); padding:14px 18px; font-size:13px; backdrop-filter:blur(8px); }

/* Modal improvements */
.cut-modal { border-radius:16px; box-shadow:0 24px 80px rgba(0,0,0,0.4); }
.cut-modal-header { padding:20px 24px; }
.cut-modal-title { font-size:18px; }
.cut-modal-body { padding:24px; }

/* Qty stepper polish */
.qty-stepper { border-radius:8px; height:34px; }
.qty-stepper button { width:30px; font-size:16px; }
.qty-stepper input { font-size:13px; }

/* Grain selector */
.grain-selector { border-radius:8px; }
.grain-btn { width:32px; height:30px; border-radius:6px; }

/* Better toggle switch */
.cut-toggle-track { width:40px; height:22px; border-radius:11px; }
.cut-toggle-thumb { width:18px; height:18px; }
.cut-toggle-track.on .cut-toggle-thumb { transform:translateX(18px); }

/* Utilisation bar */
.utilisation-bar { height:10px; border-radius:5px; }
.utilisation-bar-fill { border-radius:5px; }

/* Settings inputs in drawer */
.settings-drawer-body input[type="number"],
.settings-drawer-body input[type="text"],
.settings-drawer-body select {
  padding:10px 12px; border:1px solid var(--border); border-radius:8px;
  background:var(--bg-primary); color:var(--text-primary); font-size:14px; width:100%;
  transition:border-color 0.15s;
}
.settings-drawer-body input:focus,
.settings-drawer-body select:focus { border-color:var(--accent); outline:none; box-shadow:0 0 0 2px rgba(74,144,217,0.2); }

/* Sheet preset cards in drawer */
.settings-drawer-body .sheet-preset-card { border-radius:10px; transition:all 0.15s; }
.settings-drawer-body .sheet-preset-card:hover { transform:translateY(-2px); box-shadow:0 4px 12px rgba(0,0,0,0.2); }

/* Material group tabs polish */
.mg-tab-bar { border-bottom-width:2px; margin-bottom:18px; }
.mg-tab { padding:10px 18px; font-size:13px; border-radius:10px 10px 0 0; }

/* Assembly cards */
.sheet-preset-grid { gap:10px; }

/* Preview panel */
.cutting-preview-header { padding:16px 18px; font-size:14px; }

/* Status bar */
.cutting-status-bar { padding:10px 20px; font-size:13px; }

/* Smooth page transitions */
.cutting-main { scroll-behavior:smooth; }

/* Empty state polish */
.cut-empty-state { gap:16px; }
.cut-empty-title { font-size:18px; }
.cut-empty-text { font-size:14px; line-height:1.6; }

/* Import drop zone */
.import-drop-zone { border-radius:14px; padding:36px; border-width:2px; transition:all 0.2s; }
.import-drop-zone .idz-text { font-size:16px; }

/* Cost table */
.cost-table td { padding:8px 0; font-size:14px; }
.cost-table tr.cost-total td { font-size:17px; }

/* Edge banding popup */
.edge-banding-popup { border-radius:12px; box-shadow:0 12px 40px rgba(0,0,0,0.35); }

/* Scrollbar styling for dark theme */
.cutting-main::-webkit-scrollbar { width:8px; }
.cutting-main::-webkit-scrollbar-track { background:transparent; }
.cutting-main::-webkit-scrollbar-thumb { background:rgba(255,255,255,0.1); border-radius:4px; }
.cutting-main::-webkit-scrollbar-thumb:hover { background:rgba(255,255,255,0.2); }

.settings-drawer-body::-webkit-scrollbar { width:6px; }
.settings-drawer-body::-webkit-scrollbar-track { background:transparent; }
.settings-drawer-body::-webkit-scrollbar-thumb { background:rgba(255,255,255,0.08); border-radius:3px; }

/* ═══════════════════════════════════════════════════════════════
   MOBILE-FIRST RESPONSIVE IMPROVEMENTS
   ═══════════════════════════════════════════════════════════════ */

/* Tablet */
@media (max-width: 1024px) {
  .cut-nav { padding:0 12px; }
  .cut-nav-tab { padding:12px 16px; font-size:13px; }
  .settings-drawer-panel { width:100%; max-width:100vw; }
  .cut-summary-grid { grid-template-columns:repeat(2,1fr); }
}

/* Mobile */
@media (max-width: 768px) {
  .cutting-app { height:calc(100vh - 90px); min-height:400px; }
  .cut-nav-tab { padding:12px 14px; font-size:13px; gap:6px; }
  .cut-nav-tab span:last-child { display:inline; }
  .cut-nav-right { gap:8px; }
  .cut-nav-info { font-size:11px; }
  .cutting-main { padding:12px; }
  .cut-card-header { padding:12px 14px; }
  .cut-card-body { padding:14px; }
  .cut-card-title { font-size:14px; }
  .parts-table { font-size:13px; }
  .parts-table th { padding:8px 6px; font-size:10px; }
  .cut-summary-grid { grid-template-columns:1fr 1fr; gap:8px; }
  .cut-summary-stat { padding:12px 10px; }
  .cut-summary-value { font-size:20px; }
  .sheet-preset-grid { grid-template-columns:1fr 1fr; }
  .optimise-btn { padding:14px; font-size:15px; }
  .cut-btn { padding:8px 12px; font-size:12px; }
  .settings-drawer-panel { width:100%; }
}

/* Small phone */
@media (max-width: 480px) {
  .cut-nav-tab { padding:10px 12px; font-size:12px; }
  .cut-nav-badge { display:none; }
  .cutting-main { padding:8px; }
  .cut-card { border-radius:10px; }
  .cut-summary-grid { grid-template-columns:1fr; }
}

/* Workshop mode enhanced */
.cutting-app.workshop-mode .cut-nav-tab { font-size:18px; padding:16px 24px; }
.cutting-app.workshop-mode .cut-nav-gear { width:52px; height:52px; }
.cutting-app.workshop-mode .cut-card-title { font-size:18px; }
.cutting-app.workshop-mode .parts-table { font-size:16px; }
.cutting-app.workshop-mode .parts-table th { font-size:14px; padding:12px; }
.cutting-app.workshop-mode .parts-table .cell-input { font-size:18px; min-height:44px; }
.cutting-app.workshop-mode .cut-summary-value { font-size:32px; }
.cutting-app.workshop-mode .optimise-btn { font-size:22px; padding:22px; }

/* ═══════════════════════════════════════════════════════════════
   AUDIT PART 3: Mobile, Minimap, B&W Print, Loading States
   ═══════════════════════════════════════════════════════════════ */

/* Context menu divider */
.editor-ctx-divider { height:1px; background:rgba(255,255,255,0.06); margin:4px 0; }

/* Minimap */
.editor-minimap { position:absolute; bottom:12px; right:12px; background:rgba(0,0,0,0.75); border:1px solid rgba(255,255,255,0.15); border-radius:6px; overflow:hidden; cursor:pointer; z-index:10; box-shadow:0 4px 12px rgba(0,0,0,0.4); }
.editor-minimap svg { display:block; }

/* Loading skeleton */
.editor-loading { position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:12px; background:rgba(10,10,26,0.8); z-index:5; color:rgba(255,255,255,0.3); font-size:13px; }
.editor-loading-pulse { width:60%; height:40%; border-radius:8px; background:linear-gradient(90deg,rgba(255,255,255,0.02) 25%,rgba(255,255,255,0.05) 50%,rgba(255,255,255,0.02) 75%); background-size:200% 100%; animation:shimmer 1.5s ease-in-out infinite; }
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* Multi-select highlight */
.svg-part.multi-selected rect { stroke:#3B82F6!important; stroke-width:2px!important; stroke-dasharray:6 3; }

/* Touch targets */
@media (pointer:coarse) {
  .editor-ctx-item { padding:14px 18px!important; font-size:15px!important; }
  #fse-toolbar button { min-height:44px; min-width:44px; }
  #fse-tabs > div { min-height:44px; padding:10px 16px; }
}

/* Mobile toolbar at bottom */
@media (max-width:768px) {
  #fs-editor-overlay { flex-direction:column; }
  #fse-toolbar { order:3; border-top:1px solid rgba(255,255,255,0.08); overflow-x:auto; -webkit-overflow-scrolling:touch; flex-wrap:nowrap; }
  #fse-sheet { order:2; flex:1; }
  #fse-tabs { order:1; overflow-x:auto; }
  #fse-status { order:4; }
}

/* B&W print patterns */
@media print {
  .svg-part rect { stroke:#000!important; stroke-width:1.5px!important; }
  .svg-banding-line { stroke:#000!important; stroke-width:5px!important; }
  .svg-banding-marker { fill:#000!important; font-size:10px!important; }
  .svg-part-label { fill:#000!important; }
  .svg-dimension-text { fill:#000!important; }
}

/* Properties bar */
.editor-props-bar { display:flex; align-items:center; gap:12px; padding:6px 12px; background:rgba(59,130,246,0.06); border-bottom:1px solid rgba(59,130,246,0.15); font-size:12px; flex-wrap:wrap; min-height:38px; }
.props-field { display:flex; align-items:center; gap:4px; }
.props-label { color:rgba(255,255,255,0.4); font-size:11px; font-weight:600; text-transform:uppercase; letter-spacing:0.3px; }
.props-input { background:rgba(0,0,0,0.3); border:1px solid rgba(255,255,255,0.1); border-radius:4px; padding:3px 6px; color:#fff; font-size:12px; }
.props-input:focus { border-color:#3B82F6; outline:none; }
.props-dim { font-family:monospace; text-align:right; }
.props-value { font-family:monospace; color:rgba(255,255,255,0.6); font-size:12px; }
.props-colour { width:28px; height:24px; border:1px solid rgba(255,255,255,0.15); border-radius:4px; cursor:pointer; padding:0; background:transparent; }
.props-select { background:rgba(0,0,0,0.3); border:1px solid rgba(255,255,255,0.1); border-radius:4px; padding:3px 6px; color:#fff; font-size:12px; cursor:pointer; }

/* Editor search */
.editor-search { background:rgba(0,0,0,0.3); border:1px solid rgba(255,255,255,0.1); border-radius:6px; padding:4px 10px; color:#fff; font-size:12px; width:120px; }
.editor-search:focus { border-color:#3B82F6; outline:none; width:180px; transition:width 0.2s; }