:root {
  --sidebar-bg: #1a2d4a;
  --sidebar-active: #2563eb;
  --header-bg: #ffffff;
  --page-bg: #f0f2f5;
  --panel-bg: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --locked: #94a3b8;
  --source: #059669;
  --entered: #2563eb;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--page-bg);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }

.header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.logo { font-weight: 700; font-size: 15px; color: var(--accent); }
.logo span { color: var(--text-muted); font-weight: 400; font-size: 11px; display: block; }
.breadcrumb { color: var(--text-muted); font-size: 12px; }
.breadcrumb strong { color: var(--text); }
.header-actions { margin-left: auto; display: flex; gap: 8px; }

.btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
}
.btn:hover { background: #f8fafc; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #1d4ed8; }
.btn-danger { background: #fef2f2; color: var(--danger); border-color: #fecaca; }

.layout { display: flex; flex: 1; overflow: hidden; }

.sidebar {
  width: 210px;
  background: var(--sidebar-bg);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
}
.sidebar-section { padding: 12px 0 4px; }
.sidebar-label {
  padding: 4px 16px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748b;
}
.nav-item {
  padding: 8px 16px;
  cursor: pointer;
  font-size: 12px;
  display: block;
}
.nav-item:hover { background: rgba(255,255,255,0.06); }
.nav-item.active { background: var(--sidebar-active); color: #fff; }
.sidebar-context {
  margin-top: auto;
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 11px;
}
.sidebar-context div { margin-bottom: 4px; }
.sidebar-context span { color: #94a3b8; }

.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.content-wrap { flex: 1; display: flex; overflow: hidden; }
.content { flex: 1; overflow-y: auto; padding: 16px 20px; }
.right-panel {
  width: 300px;
  background: #fff;
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding: 16px;
  flex-shrink: 0;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
}
.panel-header {
  padding: 10px 14px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 12px;
}
.panel-num {
  background: var(--accent);
  color: #fff;
  width: 22px; height: 22px;
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
  flex-shrink: 0;
}
.panel-body { padding: 14px; }
.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.panel-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.panel-grid-4 { grid-template-columns: repeat(4, 1fr); }

.field { margin-bottom: 10px; }
.field label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 500;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 12px;
  background: #fff;
  color: var(--text);
}

.toolbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  gap: 10px;
  align-items: center;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.search-box {
  flex: 1;
  min-width: 200px;
  max-width: 360px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
}

.tag {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  background: #e2e8f0;
  color: var(--text);
  display: inline-block;
}
.tag.blue { background: var(--accent-light); color: var(--accent); }
.tag.green { background: #dcfce7; color: #166534; }
.tag.amber { background: #fef3c7; color: #92400e; }
.tag.red { background: #fee2e2; color: #991b1b; }
.tag.gray { background: #f1f5f9; color: var(--text-muted); }

table { width: 100%; border-collapse: collapse; font-size: 12px; }
th {
  text-align: left;
  padding: 8px 10px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 11px;
  position: sticky;
  top: 0;
}
td { padding: 8px 10px; border-bottom: 1px solid var(--border); }
tr:hover td { background: #f8fafc; }
tr.selected td { background: var(--accent-light); }
tr { cursor: pointer; }

.callout {
  background: #eff6ff;
  border: 1px solid #93c5fd;
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 11px;
  color: #1e40af;
  margin-bottom: 12px;
}
.callout.warn {
  background: #fffbeb;
  border-color: #fcd34d;
  color: #92400e;
}
.callout.danger {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

.stat-row { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.stat-box {
  flex: 1;
  min-width: 100px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}
.stat-box .num { font-size: 22px; font-weight: 700; color: var(--accent); }
.stat-box .lbl { font-size: 10px; color: var(--text-muted); margin-top: 2px; }
.stat-box.danger .num { color: var(--danger); }
.stat-box.warn .num { color: var(--warning); }

.rel-visual {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  background: #f8fafc;
  border-radius: 6px;
  border: 1px solid var(--border);
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.rel-node {
  padding: 6px 12px;
  background: var(--accent-light);
  border: 1px solid #93c5fd;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
}
.rel-arrow { color: var(--text-muted); font-size: 12px; }

.trace-chain {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  padding: 12px;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 12px;
}
.trace-node {
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: #fff;
}
.trace-node.source { border-color: var(--accent); background: var(--accent-light); color: var(--accent); }
.trace-node.impacted { border-color: var(--warning); background: #fffbeb; color: #92400e; }
.trace-node.critical { border-color: var(--danger); background: #fef2f2; color: #991b1b; }
.trace-arrow { color: var(--text-muted); font-size: 14px; }

.graph-area {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 280px;
  padding: 20px;
  position: relative;
  overflow: auto;
}
.graph-node {
  position: absolute;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 600;
  border: 2px solid var(--border);
  background: #fff;
  text-align: center;
  min-width: 100px;
}
.graph-node.center { border-color: var(--accent); background: var(--accent-light); color: var(--accent); }
.graph-node.impacted { border-color: var(--warning); background: #fffbeb; }
.graph-line {
  position: absolute;
  height: 2px;
  background: var(--border);
  transform-origin: left center;
}

.detail-section { margin-bottom: 14px; }
.detail-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 6px;
}
.detail-value { font-size: 12px; line-height: 1.5; }

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.tab {
  padding: 8px 16px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Viewport-locked workbench — no page scroll; tabs switch panel groups */
.workbench-page { height: 100vh; overflow: hidden; display: flex; flex-direction: column; }
.workbench-page .layout { flex: 1; min-height: 0; overflow: hidden; }
.workbench-page .main { min-height: 0; overflow: hidden; display: flex; flex-direction: column; }
.workbench-page .content {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
}
.workbench-page .callout {
  flex-shrink: 0;
  margin-bottom: 6px;
  padding: 6px 10px;
  font-size: 11px;
  line-height: 1.35;
}
.workbench-page .wb-tabs {
  flex-shrink: 0;
  margin-bottom: 6px;
}
.workbench-page .wb-tabs .tab {
  padding: 6px 12px;
  font-size: 11px;
}
.workbench-page .wb-tab-pane {
  display: none;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.workbench-page .wb-tab-pane.active {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.workbench-page .wb-tab-pane .panel {
  margin-bottom: 0;
  flex-shrink: 0;
}
.workbench-page .wb-tab-pane .panel-grow {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.workbench-page .wb-tab-pane .panel-grow .panel-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}
.workbench-page .wb-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  flex: 1;
  min-height: 0;
}
.workbench-page .wb-grid-2 > .panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.workbench-page .wb-grid-2 > .panel .panel-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}
.workbench-page .panel-header { padding: 6px 10px; font-size: 12px; }
.workbench-page .panel-body { padding: 8px 10px; }
.workbench-page .panel-num { width: 18px; height: 18px; font-size: 10px; }
.workbench-page .field label { font-size: 10px; margin-bottom: 2px; }
.workbench-page .field input,
.workbench-page .field select,
.workbench-page .field textarea { padding: 4px 6px; font-size: 11px; }
.workbench-page .detail-section { margin-bottom: 8px; }
.workbench-page #wb-tab-1.active {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.workbench-page #wb-tab-1.active .panel-grow {
  flex: 1;
  min-height: 0;
}
.workbench-page #wb-tab-1.active .panel:last-child {
  flex-shrink: 0;
  max-height: 42%;
}
.workbench-page .chg-type-grid {
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
}
.workbench-page .chg-type-btn { padding: 6px 4px; font-size: 10px; }
.workbench-page .sidebar { overflow: hidden; }
.workbench-page .sidebar-section { padding: 8px 0 2px; }
.workbench-page .nav-item { padding: 6px 16px; font-size: 11px; }
.workbench-page .action-bar {
  flex-shrink: 0;
  position: relative;
  padding: 8px 12px;
}

.checkbox-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.checkbox-item { display: flex; align-items: center; gap: 6px; font-size: 12px; }

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  padding: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.hub-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.hub-card:hover { border-color: var(--accent); }
.hub-card h2 { font-size: 15px; margin-bottom: 6px; color: var(--accent); }
.hub-card p { font-size: 12px; color: var(--text-muted); line-height: 1.5; }

.rp-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 8px;
}

/* Advanced mockup components */
.toast-container { position: fixed; top: 60px; right: 20px; z-index: 1000; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast { background: #1e293b; color: #fff; padding: 10px 16px; border-radius: 8px; font-size: 12px; max-width: 320px; animation: toastIn 0.3s ease; pointer-events: auto; border-left: 4px solid var(--accent); }
.toast.success { border-left-color: var(--success); }
.toast.warn { border-left-color: var(--warning); }
.toast.error { border-left-color: var(--danger); }
@keyframes toastIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
.progress-bar-wrap { background: #e2e8f0; border-radius: 4px; height: 6px; overflow: hidden; margin-top: 6px; }
.progress-bar-fill { height: 100%; background: var(--accent); border-radius: 4px; transition: width 0.4s ease; }
.filter-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.filter-chip { padding: 4px 10px; border-radius: 16px; font-size: 11px; border: 1px solid var(--border); background: #fff; cursor: pointer; }
.filter-chip.active { background: var(--accent-light); border-color: var(--accent); color: var(--accent); font-weight: 600; }
.loading-overlay { display: none; position: fixed; inset: 0; background: rgba(255,255,255,0.85); z-index: 200; align-items: center; justify-content: center; flex-direction: column; gap: 16px; }
.loading-overlay.open { display: flex; }
.spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-steps { font-size: 12px; color: var(--text-muted); text-align: center; max-width: 280px; }
.live-panel { background: #0f172a; color: #e2e8f0; border-radius: 8px; padding: 12px; font-family: "SF Mono", "Fira Code", monospace; font-size: 10px; line-height: 1.7; max-height: 200px; overflow-y: auto; }
.live-panel .hl-lhs { color: #93c5fd; }
.live-panel .hl-rel { color: #fbbf24; }
.live-panel .hl-rhs { color: #86efac; }
.live-panel .hl-meta { color: #64748b; }
.validation-list { list-style: none; }
.validation-list li { padding: 6px 0; font-size: 12px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--border); }
.validation-list li.pass { color: var(--success); }
.validation-list li.fail { color: var(--danger); }
.sortable { cursor: pointer; user-select: none; }
.sortable:hover { color: var(--accent); }
.mini-graph { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 10px; background: #f8fafc; border-radius: 6px; font-size: 10px; }
.mini-graph-row { display: flex; align-items: center; gap: 6px; }
.impact-bar-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 11px; }
.impact-bar-row span:first-child { width: 110px; flex-shrink: 0; }
.impact-bar-track { flex: 1; height: 8px; background: #e2e8f0; border-radius: 4px; overflow: hidden; }
.impact-bar-fill { height: 100%; border-radius: 4px; transition: width 0.6s ease; }
.graph-node.clickable { cursor: pointer; transition: transform 0.15s; }
.graph-node.clickable:hover { transform: scale(1.05); }
.graph-node.highlight { border-color: var(--accent) !important; background: var(--accent-light) !important; }
.demo-banner { background: #fef3c7; border-bottom: 1px solid #fcd34d; padding: 6px 20px; font-size: 11px; color: #92400e; display: none; align-items: center; gap: 12px; flex-shrink: 0; }
.demo-banner.active { display: flex; }
.field-inspector { position: fixed; bottom: 60px; right: 20px; width: 300px; background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 14px; font-size: 11px; display: none; z-index: 50; }
.field-inspector.open { display: block; }
.field-inspector h4 { font-size: 12px; margin-bottom: 8px; color: var(--accent); }
.compare-tray { position: fixed; bottom: 0; left: 210px; right: 0; background: #fff; border-top: 2px solid var(--accent); padding: 10px 20px; display: none; align-items: center; gap: 16px; z-index: 40; font-size: 12px; }
.compare-tray.open { display: flex; }
.hub-stats { display: flex; justify-content: center; gap: 24px; padding: 16px 24px; flex-wrap: wrap; }
.hub-stat .num { font-size: 24px; font-weight: 700; color: var(--accent); }
.hub-stat .lbl { font-size: 11px; color: var(--text-muted); }
.hub-actions { display: flex; justify-content: center; gap: 10px; padding-bottom: 16px; flex-wrap: wrap; }
.wizard-progress { padding: 8px 20px; background: #fff; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.wizard-progress-label { font-size: 11px; color: var(--text-muted); margin-bottom: 4px; display: flex; justify-content: space-between; }