/* RaccoonIR Styles — Purple Team Incident Response Playbook Planner */
:root {
  --bg-primary: #0d0d12;
  --bg-secondary: #16161e;
  --bg-tertiary: #1e1e2a;
  --bg-panel: #121218;
  --bg-toolbar: #0a0a10;
  --text-primary: #e0e0ec;
  --text-secondary: #8888a8;
  --text-muted: #555570;
  --accent: #a855f7;
  --accent-hover: #c084fc;
  --accent-active: #7c3aed;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #2a2a3a;
  --border-light: #3a3a50;
  --panel-width: 230px;
  --props-width: 280px;
  --header-height: 50px;
  --tabbar-height: 36px;
  --toolbar-height: 40px;
  --statusbar-height: 24px;
}

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

body {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', Consolas, monospace;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

#app { display: flex; flex-direction: column; height: 100vh; width: 100vw; }

/* ===== HEADER ===== */
#app-header {
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 12px;
  flex-shrink: 0;
}

.app-title { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.app-logo { font-size: 20px; }
.app-logo-img { height: 44px; vertical-align: middle; margin-right: 8px; image-rendering: pixelated; }
.app-name { font-size: 15px; font-weight: 700; color: var(--accent); letter-spacing: 0.5px; }
.app-subtitle { font-size: 11px; color: var(--text-muted); display: none; }
@media (min-width: 900px) { .app-subtitle { display: block; } }

.header-toolbar { display: flex; gap: 5px; flex-wrap: wrap; align-items: center; }

.current-filename-display {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 3px 8px;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: default;
}
.current-filename-display::before {
  content: '\1F4C4\00A0';
  opacity: 0.6;
}

/* ===== BUTTONS ===== */
button {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 5px 11px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.15s;
  white-space: nowrap;
}
button:hover { background: var(--bg-panel); border-color: var(--accent); }
button:active { background: var(--accent-active); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-hover); }
button.danger-btn { background: var(--danger); border-color: var(--danger); color: #fff; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
.sep-btn { width: 1px; background: var(--border); align-self: stretch; margin: 0 3px; }

/* ===== TAB BAR ===== */
#tab-bar {
  background: var(--bg-toolbar);
  border-bottom: 2px solid var(--border);
  height: var(--tabbar-height);
  display: flex;
  align-items: flex-end;
  padding: 0 8px;
  gap: 2px;
  flex-shrink: 0;
}

.tab {
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--text-secondary);
  padding: 6px 16px;
  border-radius: 4px 4px 0 0;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.15s;
  position: relative;
  bottom: -2px;
}
.tab:hover { background: var(--bg-secondary); color: var(--text-primary); border-color: var(--border); }
.tab.active {
  background: var(--bg-primary);
  color: var(--accent);
  border-color: var(--border);
  border-bottom-color: var(--bg-primary);
  font-weight: 600;
}

/* ===== MAIN LAYOUT ===== */
#main-content { display: flex; flex: 1; overflow: hidden; }

/* ===== PANEL RESIZERS ===== */
.panel-resizer {
  width: 5px;
  background: var(--border);
  cursor: col-resize;
  flex-shrink: 0;
  transition: background 0.15s;
  position: relative;
  z-index: 10;
}
.panel-resizer:hover,
.panel-resizer.dragging { background: var(--accent); }

/* ===== MODEL EXPLORER ===== */
#model-explorer {
  width: var(--panel-width);
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
}

.panel-header {
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
  padding: 7px 10px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.panel-add-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 16px;
  padding: 0 2px;
  line-height: 1;
}
.panel-add-btn:hover { background: none; border: none; color: var(--accent-hover); }

#explorer-content { flex: 1; overflow-y: auto; padding: 4px 2px; }

/* Tree */
.tree-section { margin-bottom: 2px; }
.tree-section-hdr {
  display: flex;
  align-items: center;
  padding: 4px 8px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  gap: 5px;
  user-select: none;
  border-radius: 3px;
}
.tree-section-hdr:hover { background: var(--bg-tertiary); }
.tree-section-hdr .expand-arrow { font-size: 9px; color: var(--text-muted); }

.tree-item {
  display: flex;
  align-items: center;
  padding: 3px 8px;
  cursor: pointer;
  border-radius: 3px;
  gap: 4px;
  user-select: none;
  transition: background 0.1s;
}
.tree-item:hover { background: var(--bg-tertiary); }
.tree-item.selected { background: rgba(168,85,247,0.2); }
.tree-item .ti-toggle { font-size: 8px; color: var(--text-muted); width: 12px; flex-shrink: 0; text-align: center; cursor: pointer; user-select: none; }
.tree-item .ti-toggle:hover { color: var(--accent); }
.tree-item .ti-icon { font-size: 12px; flex-shrink: 0; width: 15px; text-align: center; }
.tree-item .ti-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.tree-item .ti-badge { font-size: 9px; color: var(--text-muted); }

#dm-canvas.drag-over { outline: 2px dashed var(--accent); outline-offset: -3px; }
.tree-children { padding-left: 12px; }

/* ===== CANVAS AREA ===== */
#canvas-area { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

#view-toolbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  height: var(--toolbar-height);
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 5px;
  flex-shrink: 0;
}

.tool-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
  transition: all 0.15s;
  white-space: nowrap;
}
.tool-btn:hover { background: var(--bg-panel); border-color: var(--accent); color: var(--text-primary); }
.tool-btn.active { background: rgba(168,85,247,0.2); border-color: var(--accent); color: var(--accent); }
.tool-btn:disabled { opacity: 0.35; cursor: not-allowed; pointer-events: none; }
.pb-out-port:hover { fill: rgba(168,85,247,0.9); stroke: #fff; }
.tool-sep { width: 1px; background: var(--border); align-self: stretch; margin: 0 2px; }
.zoom-info { font-size: 11px; color: var(--text-muted); min-width: 44px; text-align: center; margin-left: auto; }

#canvas-container { flex: 1; position: relative; overflow: hidden; }
.view-panel { position: absolute; inset: 0; display: none; }
.view-panel.active { display: flex; flex-direction: column; }

#dm-canvas, #pb-canvas, #impact-canvas {
  flex: 1;
  width: 100%;
  cursor: default;
  background: var(--bg-primary);
  display: block;
}

.tool-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 3px 6px;
  border-radius: 3px;
  font-size: 11px;
  height: 26px;
  width: auto;
  min-width: 90px;
  max-width: 200px;
}
.tool-select:focus { border-color: var(--accent); }

/* ===== PROPERTIES PANEL ===== */
#properties-panel {
  width: var(--props-width);
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
}
#properties-content { flex: 1; overflow-y: auto; padding: 10px; }
.no-selection { color: var(--text-muted); font-style: italic; text-align: center; margin-top: 24px; font-size: 12px; }

/* Property forms */
.prop-group { margin-bottom: 14px; }
.prop-group-title {
  font-size: 10px; font-weight: 700; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.5px;
  margin-bottom: 8px; padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}
.prop-row { margin-bottom: 7px; }
.prop-label { font-size: 11px; color: var(--text-secondary); margin-bottom: 3px; display: block; }

input[type="text"], input[type="number"], input[type="date"], textarea, select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 12px;
  width: 100%;
  font-family: inherit;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 54px; }
select option { background: var(--bg-secondary); }
input[type="range"] { background: none; border: none; padding: 0; width: 100%; cursor: pointer; }

.checkbox-row { display: flex; flex-wrap: wrap; gap: 6px; }
.checkbox-item { display: flex; align-items: center; gap: 4px; cursor: pointer; font-size: 11px; }
.checkbox-item input { cursor: pointer; }

.prop-list { list-style: none; margin-top: 4px; }
.prop-list li {
  display: flex; align-items: center; gap: 6px;
  padding: 4px 0; border-bottom: 1px solid var(--border); font-size: 11px;
}
.prop-list li:last-child { border-bottom: none; }
.pli-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pli-btn { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 1px 3px; font-size: 11px; }
.pli-btn:hover { background: none; border: none; color: var(--accent); }
.pli-btn.del:hover { color: var(--danger); }
.prop-add { width: 100%; margin-top: 5px; font-size: 11px; padding: 3px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }
.tag {
  background: rgba(168,85,247,0.15); border: 1px solid rgba(168,85,247,0.3);
  color: var(--accent); padding: 2px 6px; border-radius: 10px; font-size: 10px;
  display: flex; align-items: center; gap: 3px; cursor: default;
}
.tag-x { cursor: pointer; color: var(--text-muted); }
.tag-x:hover { color: var(--danger); }

/* ===== STATUS BAR ===== */
#status-bar {
  background: var(--bg-toolbar);
  border-top: 1px solid var(--border);
  height: var(--statusbar-height);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 14px;
  font-size: 11px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
#status-message { flex: 1; }
#status-coords { color: var(--text-muted); }

/* ===== METRICS VIEW ===== */
#metrics-content { flex: 1; overflow: auto; padding: 20px; }
.metrics-section { margin-bottom: 24px; }
.metrics-section h3 { color: var(--accent); margin-bottom: 12px; font-size: 14px; font-weight: 600; }

.metrics-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.metrics-table th, .metrics-table td { padding: 7px 10px; text-align: left; border-bottom: 1px solid var(--border); }
.metrics-table th { background: var(--bg-secondary); color: var(--text-secondary); font-size: 10px; text-transform: uppercase; letter-spacing: 0.4px; font-weight: 700; }
.metrics-table tr:hover td { background: rgba(255,255,255,0.02); }
.metrics-table tr.metrics-row-clickable { cursor: pointer; }
.metrics-table tr.metrics-row-clickable:hover td { background: rgba(168,85,247,0.08); }
.metrics-table tr.metrics-row-clickable.selected td { background: rgba(168,85,247,0.18); }

.prob-bar-wrap { display: flex; align-items: center; gap: 8px; }
.prob-bar-bg { background: var(--bg-tertiary); border-radius: 2px; overflow: hidden; height: 12px; width: 80px; flex-shrink: 0; }
.prob-bar-fill { height: 100%; transition: width 0.3s; }
.prob-num { font-size: 11px; color: var(--text-secondary); min-width: 36px; }

.cio-pos { color: var(--success); font-weight: 600; }
.cio-neg { color: var(--danger); font-weight: 600; }
.cio-zero { color: var(--text-muted); }

.type-badge {
  display: inline-block; padding: 1px 5px; border-radius: 3px; font-size: 9px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.3px;
}
.type-AND { background: rgba(46,125,50,0.3); color: #66bb6a; }
.type-OR { background: rgba(230,81,0,0.3); color: #ff7043; }
.type-UNCONTROLLABLE { background: rgba(69,90,100,0.3); color: #78909c; }

.stat-card {
  display: inline-flex; flex-direction: column; align-items: center;
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 6px;
  padding: 14px 20px; gap: 4px; min-width: 100px;
}
.stat-card .stat-val { font-size: 22px; font-weight: 700; color: var(--accent); }
.stat-card .stat-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.4px; }
.stat-cards { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }

/* ===== SYMBIOSIS VIEW ===== */
#symbiosis-content { flex: 1; overflow: auto; padding: 20px; }
.symb-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; margin-top: 16px; }
.symb-card {
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 6px; padding: 14px;
}
.symb-card h4 { color: var(--accent); margin-bottom: 10px; font-size: 13px; }
.symb-card-body { font-size: 12px; color: var(--text-secondary); }
.symb-card-body .field { margin-bottom: 5px; }
.symb-card-body .field strong { color: var(--text-primary); }

/* ===== PLAYBOOK BREADCRUMB ===== */
#pb-breadcrumb {
  padding: 4px 10px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.bc-item { cursor: pointer; color: var(--accent); }
.bc-item:hover { text-decoration: underline; }
.bc-sep { color: var(--text-muted); }

/* ===== MODAL ===== */
#modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.65);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
#modal-overlay.hidden { display: none; }
#modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  min-width: 380px; max-width: 560px; width: 92vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
#modal-header { padding: 14px 18px; font-size: 14px; font-weight: 600; border-bottom: 1px solid var(--border); }
#modal-body { padding: 14px 18px; max-height: 60vh; overflow-y: auto; }
#modal-footer { padding: 10px 18px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

/* ===== CONTEXT MENU ===== */
#context-menu {
  position: fixed;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 5px;
  z-index: 900;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  min-width: 175px;
  padding: 4px 0;
}
#context-menu.hidden { display: none; }
.ctx-item {
  padding: 7px 14px;
  cursor: pointer;
  font-size: 12px;
  display: flex; align-items: center; gap: 8px;
  transition: background 0.1s;
}
.ctx-item:hover { background: var(--bg-tertiary); }
.ctx-item.ctx-sep { border-top: 1px solid var(--border); padding: 0; margin: 3px 0; cursor: default; }
.ctx-item.ctx-danger { color: var(--danger); }
.ctx-item.ctx-disabled { color: var(--text-muted); cursor: not-allowed; }
.ctx-icon { width: 15px; text-align: center; font-size: 13px; }

/* ===== SVG DIAGRAM ELEMENTS ===== */
/* -- Dependency Model -- */
.dm-node-wrap { cursor: pointer; }
.dm-node-body { rx: 5; ry: 5; }
.dm-edge { fill: none; stroke-width: 1.5; }
.dm-edge-AND { stroke: #2e7d32; }
.dm-edge-OR { stroke: #e65100; stroke-dasharray: 5,3; }
.dm-edge-UNCONTROLLABLE { stroke: #546e7a; stroke-dasharray: 3,3; }
.dm-label { font-size: 11px; pointer-events: none; }
.dm-sublabel { font-size: 9px; pointer-events: none; }
.dm-prob-bg { rx: 2; ry: 2; }
.dm-prob-fill { rx: 2; ry: 2; }
.dm-type-badge { font-size: 9px; font-weight: bold; pointer-events: none; }

/* -- Playbook -- */
.pb-activity-wrap { cursor: pointer; }
.pb-activity-body { rx: 4; ry: 4; }
.pb-activity-label { font-size: 11px; pointer-events: none; }
.pb-activity-sub { font-size: 9px; pointer-events: none; }
.pb-flow-edge { fill: none; stroke-width: 1.5; }
.pb-container-rect { rx: 5; ry: 5; }
.pb-container-label { font-size: 12px; font-weight: 600; pointer-events: none; }

/* Drag feedback */
.dragging { opacity: 0.8; }
.connect-hover { stroke: #c084fc !important; stroke-width: 2.5 !important; }

/* Empty state for diagrams */
.diagram-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 100%; pointer-events: none;
}
.diagram-empty text { fill: var(--text-muted); }

/* ===== SCROLLBARS ===== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== UTILITY ===== */
.flex { display: flex; }
.flex-1 { flex: 1; }
.gap-8 { gap: 8px; }
.mt-8 { margin-top: 8px; }
.text-muted { color: var(--text-muted); font-size: 11px; }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

/* ============================================================
   HELP PANEL
   ============================================================ */
.help-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.72);
  display: flex; align-items: center; justify-content: center;
}
.help-overlay.hidden { display: none; }

.help-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  width: 92vw; max-width: 1100px;
  height: 88vh;
  display: flex; flex-direction: column;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
  overflow: hidden;
}

.help-header {
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex; align-items: center; gap: 14px;
  flex-shrink: 0;
}
.help-title {
  font-size: 14px; font-weight: 700; color: var(--accent);
  letter-spacing: 0.5px; flex-shrink: 0;
}
.help-tabs { display: flex; gap: 4px; flex: 1; }
.help-tab {
  background: transparent; border: 1px solid transparent;
  color: var(--text-secondary); padding: 5px 16px;
  border-radius: 4px; cursor: pointer; font-size: 12px;
  transition: all 0.15s;
}
.help-tab:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.help-tab.active { background: rgba(168,85,247,0.15); border-color: var(--accent); color: var(--accent); font-weight: 600; }
.help-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 22px; cursor: pointer; padding: 0 4px; line-height: 1;
  flex-shrink: 0;
}
.help-close:hover { background: none; border: none; color: var(--danger); }

.help-body { flex: 1; overflow: hidden; }
.help-section { height: 100%; overflow-y: auto; }
.help-section.hidden { display: none; }

/* -- Tutorial -- */
.tut-wrap {
  display: flex; gap: 0; height: 100%;
}
.tut-toc {
  width: 190px; flex-shrink: 0;
  background: var(--bg-panel); border-right: 1px solid var(--border);
  padding: 14px 0; overflow-y: auto;
}
.tut-toc-title {
  font-size: 10px; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.8px;
  padding: 0 14px 10px;
}
.tut-toc a {
  display: block; padding: 5px 14px;
  font-size: 12px; color: var(--text-secondary);
  text-decoration: none; border-radius: 3px; margin: 1px 6px;
  transition: all 0.12s;
}
.tut-toc a:hover { background: var(--bg-tertiary); color: var(--text-primary); }

.tut-content {
  flex: 1; padding: 24px 32px; overflow-y: auto;
}
.tut-content h2 {
  font-size: 18px; color: var(--accent); margin: 28px 0 10px;
  padding-bottom: 6px; border-bottom: 1px solid var(--border);
}
.tut-content h2:first-child { margin-top: 0; }
.tut-content h3 { font-size: 14px; color: var(--text-primary); margin: 16px 0 7px; }
.tut-content p { color: var(--text-secondary); line-height: 1.65; margin-bottom: 10px; font-size: 13px; }
.tut-content ul, .tut-content ol { color: var(--text-secondary); font-size: 13px; line-height: 1.7; padding-left: 20px; margin-bottom: 10px; }
.tut-content li { margin-bottom: 3px; }
.tut-content strong { color: var(--text-primary); }
.tut-content em { color: var(--accent); font-style: normal; }
.tut-content code { background: var(--bg-tertiary); padding: 1px 5px; border-radius: 3px; font-size: 11px; color: #c4b5fd; }
.tut-content kbd {
  background: var(--bg-tertiary); border: 1px solid var(--border-light);
  border-radius: 3px; padding: 1px 6px; font-size: 11px; color: var(--text-primary);
}

.tut-note {
  background: rgba(168,85,247,0.1); border-left: 3px solid var(--accent);
  padding: 10px 14px; border-radius: 0 4px 4px 0; margin: 12px 0;
  font-size: 12px; color: var(--text-secondary);
}
.tut-formula {
  background: var(--bg-tertiary); border: 1px solid var(--border);
  padding: 10px 16px; border-radius: 4px; font-family: 'Courier New', monospace;
  font-size: 14px; color: var(--success); text-align: center; margin: 10px 0;
}

.tut-steps { display: flex; flex-direction: column; gap: 10px; margin: 12px 0; }
.tut-step {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--bg-panel); border: 1px solid var(--border);
  border-radius: 6px; padding: 12px 14px;
}
.tut-step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.tut-step-body { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.tut-step-body strong { color: var(--text-primary); }

.tut-colour-key { display: flex; flex-direction: column; gap: 6px; margin: 10px 0; }
.tut-ckey-row { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-secondary); }
.tut-dot {
  width: 18px; height: 18px; border-radius: 3px; flex-shrink: 0; border: 2px solid transparent;
}
.tut-dot.green  { background: #0a2e14; border-color: #2ecc71; }
.tut-dot.orange { background: #2e1e00; border-color: #f39c12; }
.tut-dot.red    { background: #2e0a0a; border-color: #e74c3c; }
.tut-dot.orange-border { background: #0e1828; border-color: #ff7043; }

/* -- Metamodel Viewer -- */
.mm-wrap { padding: 16px 20px; }
.mm-pkg-tabs { display: flex; gap: 4px; margin-bottom: 16px; flex-wrap: wrap; }
.mm-pkg-tab {
  background: var(--bg-tertiary); border: 1px solid var(--border-light);
  color: var(--text-secondary); padding: 6px 16px; border-radius: 4px 4px 0 0;
  cursor: pointer; font-size: 12px; transition: all 0.15s;
}
.mm-pkg-tab:hover { color: var(--text-primary); }
.mm-pkg-tab.active { background: var(--bg-panel); color: var(--text-primary); font-weight: 600; }

.mm-pkg-panel.hidden { display: none; }
.mm-pkg-hdr {
  padding: 10px 14px; margin-bottom: 16px;
  background: var(--bg-panel); border-radius: 4px;
}
.mm-pkg-name { font-size: 16px; font-weight: 700; margin-bottom: 3px; }
.mm-pkg-source { font-size: 10px; color: var(--text-muted); margin-bottom: 6px; }
.mm-pkg-desc { font-size: 12px; color: var(--text-secondary); }

.mm-class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 14px; margin-bottom: 20px;
}
.mm-class-card, .mm-enum-card {
  background: var(--bg-panel); border: 1px solid var(--border);
  border-radius: 6px; overflow: hidden;
}
.mm-class-hdr {
  padding: 8px 12px; display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
}
.mm-class-name { font-size: 13px; font-weight: 700; color: var(--text-primary); }
.mm-badge {
  font-size: 9px; padding: 2px 6px; border-radius: 3px;
}
.mm-badge-abs { background: rgba(155,89,182,0.2); color: #bb8ef0; border: 1px solid #9b59b6; }
.mm-badge-ext { background: rgba(168,85,247,0.1); color: #c4b5fd; border: 1px solid #a855f7; font-size: 9px; }
.mm-badge-cont { color: var(--text-muted); font-size: 11px; }

.mm-class-desc { padding: 6px 12px; font-size: 11px; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.mm-attr-sec { padding: 6px 12px 8px; border-bottom: 1px solid var(--border); }
.mm-attr-sec:last-child { border-bottom: none; }
.mm-attr-sec-title { font-size: 9px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 5px; }
.mm-attr-list { list-style: none; display: flex; flex-direction: column; gap: 3px; }
.mm-attr-list li { display: flex; align-items: baseline; gap: 5px; flex-wrap: wrap; }
.mm-attr-name { font-size: 11px; color: #c4b5fd; font-weight: 600; min-width: 90px; }
.mm-attr-name.mm-derived { color: #a88ef0; }
.mm-attr-type { font-size: 11px; color: #c4b5fd; font-style: italic; }
.mm-attr-mult { font-size: 10px; color: var(--text-muted); }
.mm-attr-desc { font-size: 10px; color: #6a7a8a; }
.mm-ref-arrow { color: #e74c3c; font-size: 12px; }
.mm-ref-target { font-size: 11px; color: #f39c12; font-weight: 600; }

.mm-derived-section .mm-attr-sec-title { color: #8860c0; }
.mm-constraint-section .mm-attr-sec-title { color: #c05050; }
.mm-constraint { font-size: 11px; color: #e07070; }

.mm-enum-section { margin-top: 4px; }
.mm-section-title { font-size: 12px; font-weight: 700; color: var(--text-secondary); margin-bottom: 10px; letter-spacing: 0.3px; }
.mm-enum-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px; }
.mm-enum-list { list-style: none; padding: 6px 12px 10px; display: flex; flex-direction: column; gap: 4px; }
.mm-enum-list li { display: flex; align-items: baseline; gap: 6px; }
.mm-enum-val { font-size: 11px; color: #f0c060; font-weight: 600; min-width: 130px; }

.mm-footer {
  margin-top: 20px; padding: 10px 14px; background: var(--bg-panel);
  border-radius: 4px; font-size: 11px; color: var(--text-muted);
}

/* -- About -- */
.about-wrap { padding: 28px 36px; max-width: 700px; }
.about-logo { font-size: 28px; font-weight: 800; color: var(--accent); letter-spacing: 1px; }
.about-subtitle { font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.about-section { margin-bottom: 22px; }
.about-section h3 { font-size: 13px; color: var(--text-primary); margin-bottom: 7px; }
.about-section p { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }
.about-refs { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.about-refs li { font-size: 12px; color: var(--text-secondary); line-height: 1.6; border-left: 3px solid var(--border-light); padding-left: 12px; }
.about-refs strong { color: var(--text-primary); }