@import url("https://fonts.googleapis.com/css2?family=Figtree:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");


/* ================================================================
   karasu — Onyx Cartographer
   A precision dark theme with raven-wing iridescence.
   Named for Huginn & Muninn — thought and memory surveying the world.
   ================================================================ */
/* ── Design Tokens ──────────────────────────────────────────────── */
:root {
  /* Surface depths — from void to raised */
  --bg-void: #07090f;
  --bg-base: #0c0f1a;
  --bg-surface: #111827;
  --bg-raised: #172035;
  --bg-overlay: #1d2840;
  --bg-selected: #1a3050;

  /* Borders — from barely-there to visible */
  --border-faint: rgba(255, 255, 255, 0.03);
  --border-subtle: rgba(255, 255, 255, 0.055);
  --border-default: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.15);
  --border-active: #3d5a8a;

  /* Text hierarchy */
  --text-primary: #dce8ff;
  --text-secondary: #7b92b4;
  --text-muted: #3d5068;
  --text-link: #5ba4f5;
  --text-link-hover: #82beff;

  /* Accent — electric blue */
  --accent: #4d8fff;
  --accent-hover: #6aaeff;
  --accent-dim: rgba(77, 143, 255, 0.1);
  --accent-glow: rgba(77, 143, 255, 0.22);

  /* Raven iridescence — purple shimmer like a crow's feather in light */
  --feather: #8b7cf6;
  --feather-dim: rgba(139, 124, 246, 0.07);
  --feather-glow: rgba(139, 124, 246, 0.18);

  /* Semantic states */
  --error: #f87171;
  --error-dim: rgba(248, 113, 113, 0.1);
  --warning: #fbbf24;
  --warning-dim: rgba(251, 191, 36, 0.08);
  --success: #34d399;

  /* Geometry */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 7px;
  --radius-lg: 10px;

  /* Layout */
  --sidebar-w: 210px;
  --topbar-h: 38px;

  /* Typography */
  --font-ui: "Figtree", -apple-system, "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;
}
/* ── Base Reset ─────────────────────────────────────────────────── */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,
body,
#root {
  height: 100%;
  width: 100%;
  overflow: hidden;
  font-family: var(--font-ui);
  background: var(--bg-base);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
/* Refined scrollbars */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-active);
}
/* ================================================================
   APP SHELL — shared layout for MemoryMode and ProjectMode
   ================================================================ */
/* Base: 2-column (editor | preview), no sidebar */
.app-shell {
  display: grid;
  grid-template-rows: 1fr auto;
  grid-template-columns: 1fr 1fr;
  height: 100%;
  width: 100%;
}
/* With sidebar: topbar + 3-column (sidebar | editor | preview) */
.app-shell.has-sidebar {
  position: relative; /* anchor for sidebar-toggle absolute positioning */
  grid-template-rows: var(--topbar-h) 1fr auto;
  grid-template-columns: var(--sidebar-w) 1fr 1fr;
}
/* ================================================================
   SERVE MODE LAYOUT — preview-only, no editor
   ================================================================ */
.app {
  display: grid;
  grid-template-rows: 1fr auto;
  grid-template-columns: 1fr 1fr;
  height: 100%;
  width: 100%;
}
.app.serve-mode {
  grid-template-columns: 1fr;
}
.app.serve-mode .preview-column {
  grid-column: 1;
}
/* ── Editor Pane ────────────────────────────────────────────────── */
.editor-pane {
  grid-row: 1;
  grid-column: 1;
  overflow: hidden;
  border-right: 1px solid var(--border-default);
  position: relative;
}
/* Iridescent seam along editor/preview boundary */
.editor-pane::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--feather-glow) 30%,
    var(--accent-glow) 55%,
    var(--feather-glow) 80%,
    transparent 100%
  );
  pointer-events: none;
  z-index: 1;
}
/* ── Preview Column ─────────────────────────────────────────────── */
.preview-column {
  grid-row: 1;
  grid-column: 2;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.preview-pane {
  flex: 1;
  overflow: hidden;
  background: var(--bg-base);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  /* Architectural grid — subtle cartographer's canvas */
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 50%, transparent 60%, var(--bg-base) 100%),
    linear-gradient(var(--border-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-faint) 1px, transparent 1px);
  background-size:
    100% 100%,
    28px 28px,
    28px 28px;
}
.preview-container {
  width: 100%;
  height: 100%;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.preview-container svg {
  max-width: 100%;
  max-height: 100%;
  filter: drop-shadow(0 2px 20px rgba(0, 0, 0, 0.5));
}
/* ── Warning Panel ──────────────────────────────────────────────── */
.warning-panel {
  grid-row: 2;
  grid-column: 1 / -1;
  background: var(--bg-void);
  border-top: 1px solid var(--border-default);
  max-height: 200px;
  overflow-y: auto;
}
.warning-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 14px;
  cursor: pointer;
  user-select: none;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition:
    background 0.15s,
    color 0.15s;
}
.warning-panel-header:hover {
  background: var(--bg-surface);
  color: var(--text-secondary);
}
.warning-list {
  list-style: none;
  padding: 2px 8px 8px;
}
.warning-item {
  padding: 3px 8px 3px 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  border-radius: 0;
  cursor: pointer;
  transition: background 0.1s;
  border-left: 2px solid transparent;
  margin: 1px 0;
}
.warning-item:hover {
  background: var(--bg-surface);
  border-left-color: var(--border-strong);
}
.warning-icon {
  margin-right: 6px;
}
.warning-icon.error {
  color: var(--error);
}
.warning-icon.warning {
  color: var(--warning);
}
.warning-details {
  margin-left: 20px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
/* ── Diagram Tab Bar ────────────────────────────────────────────── */
.diagram-tab-bar {
  display: flex;
  align-items: stretch;
  gap: 0;
  padding: 0 10px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-default);
  flex-shrink: 0;
  overflow-x: auto;
  height: 36px;
}
.diagram-tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0 13px;
  height: 100%;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-ui);
  letter-spacing: 0.015em;
  cursor: pointer;
  transition:
    color 0.15s,
    border-color 0.15s;
  white-space: nowrap;
}
.diagram-tab:hover:not(.diagram-tab--disabled) {
  color: var(--text-secondary);
}
.diagram-tab--active {
  color: var(--text-primary);
  border-bottom-color: var(--accent);
}
.diagram-tab--disabled {
  opacity: 0.28;
  cursor: not-allowed;
}
.diagram-tab-icon {
  font-size: 11px;
  opacity: 0.7;
}
.deploy-block-selector {
  align-self: center;
  margin-left: 4px;
  padding: 2px 6px;
  height: 22px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 11px;
  font-family: var(--font-ui);
  cursor: pointer;
}
.deploy-block-selector:focus {
  outline: none;
  border-color: var(--accent);
}
/* ── Cross-navigation highlight ─────────────────────────────────── */
.karasu-highlighted {
  filter: drop-shadow(0 0 6px var(--accent-glow)) drop-shadow(0 0 16px var(--accent-dim));
}
/* ── Breadcrumb ─────────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 1px;
  padding: 0 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-default);
  font-size: 12px;
  height: 28px;
  flex-shrink: 0;
}
.breadcrumb-separator {
  color: var(--text-muted);
  margin: 0 1px;
  font-size: 9px;
  opacity: 0.5;
  line-height: 1;
}
.breadcrumb-link {
  background: none;
  border: none;
  color: var(--text-link);
  cursor: pointer;
  font-size: 11.5px;
  font-family: var(--font-ui);
  padding: 2px 5px;
  border-radius: var(--radius-xs);
  transition:
    background 0.1s,
    color 0.1s;
}
.breadcrumb-link:hover {
  background: var(--accent-dim);
  color: var(--text-link-hover);
}
.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 11.5px;
  padding: 2px 5px;
}
/* ── Diagnostic Banner ──────────────────────────────────────────── */
.diagnostic-banner {
  position: absolute;
  bottom: 14px;
  left: 14px;
  right: 14px;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 12px;
  font-family: var(--font-mono);
  max-height: 120px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 3px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
}
.diagnostic-banner__item--error {
  color: var(--error);
}
.diagnostic-banner__item--warning {
  color: var(--warning);
}
/* ================================================================
   SIDEBAR MODE — project selector + file tree + editor + preview
   ================================================================ */
/* ── Project Selector (top bar) ─────────────────────────────────── */
.project-selector {
  grid-row: 1;
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  background: var(--bg-void);
  border-bottom: 1px solid var(--border-default);
  /* Barely-visible top highlight — depth cue */
  background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 0%, transparent 100%);
}
/* Raven glyph wordmark — the bird watching over */
.project-selector::before {
  content: "鴉";
  font-size: 15px;
  color: var(--text-muted);
  margin-right: 2px;
  opacity: 0.4;
  flex-shrink: 0;
  line-height: 1;
}
.project-selector-dropdown {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 4px 9px;
  font-size: 12.5px;
  font-weight: 500;
  font-family: var(--font-ui);
  min-width: 176px;
  cursor: pointer;
  transition:
    border-color 0.15s,
    box-shadow 0.15s;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%233d5068' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 26px;
}
.project-selector-dropdown:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-dim);
}
.project-selector-actions,
.project-selector-create {
  display: flex;
  align-items: center;
  gap: 4px;
}
.project-selector-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 3px 9px;
  font-size: 11.5px;
  font-weight: 500;
  font-family: var(--font-ui);
  cursor: pointer;
  transition: all 0.12s;
  letter-spacing: 0.01em;
}
.project-selector-btn:hover {
  background: var(--bg-raised);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.project-selector-btn-danger:hover {
  background: var(--error-dim);
  border-color: var(--error);
  color: var(--error);
}
.project-selector-input {
  background: var(--bg-void);
  color: var(--text-primary);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 3px 9px;
  font-size: 12px;
  font-family: var(--font-ui);
  width: 160px;
  box-shadow: 0 0 0 2px var(--accent-dim);
}
.project-selector-input:focus {
  outline: none;
}
/* ── File Tree (left sidebar) ───────────────────────────────────── */
.file-tree {
  grid-row: 2;
  grid-column: 1;
  background: var(--bg-void);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.file-tree-header {
  padding: 9px 12px 7px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border-bottom: 1px solid var(--border-faint);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.file-tree-header-actions {
  display: flex;
  gap: 2px;
}
.file-tree-header-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-radius: var(--radius-xs);
  padding: 2px 5px;
  font-size: 12px;
  cursor: pointer;
  line-height: 1;
  transition:
    background 0.12s,
    color 0.12s;
}
.file-tree-header-btn:hover {
  background: var(--bg-raised);
  color: var(--text-secondary);
}
.file-tree-content {
  flex: 1;
  overflow-y: auto;
  padding: 3px 0;
}
.file-tree-item {
  display: flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 12.5px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  transition:
    background 0.1s,
    border-color 0.1s,
    color 0.1s;
  border-left: 2px solid transparent;
}
.file-tree-item:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-left-color: var(--border-strong);
}
.file-tree-item-selected {
  background: var(--bg-selected);
  color: var(--text-primary);
  border-left-color: var(--accent);
}
.file-tree-icon {
  margin-right: 6px;
  font-size: 10px;
  width: 12px;
  text-align: center;
  color: var(--text-muted);
  flex-shrink: 0;
}
.file-tree-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-tree-inline-input {
  background: var(--bg-void);
  color: var(--text-primary);
  border: 1px solid var(--accent);
  border-radius: var(--radius-xs);
  padding: 2px 6px;
  font-size: 12px;
  font-family: var(--font-ui);
  width: calc(100% - 16px);
  margin: 2px 0;
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-dim);
}
/* ── Context Menu ───────────────────────────────────────────────── */
.context-menu {
  position: fixed;
  z-index: 1000;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 4px 0;
  min-width: 148px;
  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.65),
    0 2px 8px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  animation: contextMenuReveal 0.1s ease-out;
}
@keyframes contextMenuReveal {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-5px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}
.context-menu-item {
  display: block;
  width: 100%;
  padding: 6px 13px;
  font-size: 12.5px;
  font-family: var(--font-ui);
  color: var(--text-secondary);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  transition:
    background 0.1s,
    color 0.1s;
}
.context-menu-item:hover {
  background: var(--bg-overlay);
  color: var(--text-primary);
}
.context-menu-item-danger:hover {
  background: var(--error-dim);
  color: var(--error);
}
.context-menu-separator {
  height: 1px;
  background: var(--border-default);
  margin: 4px 0;
}
/* ── Sidebar Mode: editor & preview grid overrides ─────────────── */
.app-shell.has-sidebar .editor-pane {
  grid-row: 2;
  grid-column: 2;
  overflow: hidden;
  border-right: 1px solid var(--border-default);
  position: relative;
}
.app-shell.has-sidebar .editor-pane::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--feather-glow) 35%,
    var(--accent-glow) 55%,
    var(--feather-glow) 75%,
    transparent 100%
  );
  pointer-events: none;
  z-index: 1;
}
.app-shell.has-sidebar .preview-column {
  grid-row: 2;
  grid-column: 3;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.app-shell.has-sidebar .warning-panel {
  grid-row: 3;
  grid-column: 1 / -1;
}
/* ── Sidebar Toggle Button ─────────────────────────────────────── */
/* Absolutely positioned at the sidebar/editor boundary — does not
   participate in grid flow so it never overlaps sidebar content. */
.sidebar-toggle {
  position: absolute;
  left: var(--sidebar-w);
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 100;
  background: var(--bg-raised);
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 11px;
  font-weight: 500;
  font-family: var(--font-ui);
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  transition:
    background 0.15s,
    color 0.15s,
    border-color 0.15s;
}
.sidebar-toggle:hover {
  background: var(--bg-overlay);
  color: var(--text-primary);
  border-color: var(--accent);
}
/* When collapsed: anchor to left edge; button extends rightward */
.app-shell.has-sidebar.sidebar-collapsed .sidebar-toggle {
  left: 0;
  transform: translate(0, -50%);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
/* ── Sidebar Collapsed ─────────────────────────────────────────── */
.app-shell.has-sidebar.sidebar-collapsed {
  grid-template-columns: 0 1fr 1fr;
}
.app-shell.has-sidebar.sidebar-collapsed .file-tree,
.app-shell.has-sidebar.sidebar-collapsed .project-selector {
  display: none;
}
/* ── Preview Focused (fullscreen preview) ──────────────────────── */
/* NOTE: specificity (2 classes) is intentionally lower than .has-sidebar.preview-focused
   (3 classes) below, which provides explicit overrides for the sidebar case. */
.app-shell.preview-focused {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr auto;
}
.app-shell.preview-focused .editor-pane {
  display: none;
}
.app-shell.preview-focused .preview-column {
  grid-row: 1;
  grid-column: 1;
}
.app-shell.preview-focused .warning-panel {
  grid-row: 2;
  grid-column: 1;
}
/* ── Has-sidebar + Preview Focused ─────────────────────────────── */
/* Higher specificity (3 classes) overrides both .has-sidebar (2 classes) and
   .has-sidebar.sidebar-collapsed (3 classes, earlier in file) so this always
   wins when preview-focused is active, regardless of sidebar-collapsed state. */
.app-shell.has-sidebar.preview-focused {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr auto;
}
/* 4-class specificity beats .app-shell.has-sidebar .preview-column (3 classes) */
.app-shell.has-sidebar.preview-focused .preview-column {
  grid-row: 1;
  grid-column: 1;
}
.app-shell.has-sidebar.preview-focused .warning-panel {
  grid-row: 2;
  grid-column: 1;
}
.app-shell.has-sidebar.preview-focused .file-tree,
.app-shell.has-sidebar.preview-focused .project-selector,
.app-shell.has-sidebar.preview-focused .sidebar-toggle {
  display: none;
}
/* ── OPFS Banner ────────────────────────────────────────────────── */
.opfs-banner {
  grid-column: 1 / -1;
  background: linear-gradient(90deg, #2d1700, #1e1000);
  border-bottom: 1px solid rgba(251, 191, 36, 0.4);
  padding: 5px 14px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: #fde68a;
  text-align: center;
}
/* ── Loading ────────────────────────────────────────────────────── */
.app-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--font-ui);
  letter-spacing: 0.08em;
}
/* ── Node Detail Panel ──────────────────────────────────────────── */
.node-detail-panel {
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.65),
    0 4px 16px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.node-detail-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-default);
  background: linear-gradient(to bottom, var(--bg-overlay) 0%, var(--bg-raised) 100%);
}
.node-detail-icon {
  font-size: 15px;
}
.node-detail-label {
  font-weight: 600;
  font-size: 13.5px;
  color: var(--text-primary);
  flex: 1;
  letter-spacing: -0.01em;
}
.node-detail-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  padding: 1px 5px;
  line-height: 1;
  border-radius: var(--radius-xs);
  transition: all 0.12s;
}
.node-detail-close:hover {
  color: var(--text-primary);
  background: var(--bg-overlay);
}
.node-detail-description {
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  max-height: 200px;
  overflow-y: auto;
}
.node-detail-description p {
  margin-bottom: 8px;
}
.node-detail-description h1,
.node-detail-description h2,
.node-detail-description h3 {
  font-size: 13px;
  color: var(--text-primary);
  margin: 8px 0 4px;
}
.node-detail-description code {
  background: var(--bg-void);
  padding: 1px 4px;
  border-radius: var(--radius-xs);
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--accent-hover);
}
.node-detail-description ul,
.node-detail-description ol {
  padding-left: 20px;
  margin-bottom: 8px;
}
.node-detail-section {
  padding: 8px 12px;
  border-top: 1px solid var(--border-subtle);
}
.node-detail-section-title {
  font-size: 10.5px;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-weight: 700;
}
.node-detail-links {
  list-style: none;
  padding: 0;
}
.node-detail-links li {
  margin: 2px 0;
}
.node-detail-links a {
  color: var(--text-link);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.12s;
}
.node-detail-links a:hover {
  color: var(--text-link-hover);
}
.node-detail-prop {
  font-size: 11.5px;
  color: var(--text-muted);
  margin: 2px 0;
  font-family: var(--font-mono);
}
.node-detail-nav-btn {
  display: block;
  width: 100%;
  padding: 4px 8px;
  background: transparent;
  border: 1px solid #334155;
  border-radius: 4px;
  color: #60a5fa;
  font-size: 12px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s;
}
.node-detail-nav-btn:hover {
  background: #1e3a5f;
  border-color: #3b82f6;
}
/* ── Preview Toolbar ────────────────────────────────────────────── */
.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 3px;
  padding: 4px 10px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-default);
  flex-shrink: 0;
}
.toolbar-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 3px 9px;
  font-size: 11px;
  font-weight: 500;
  font-family: var(--font-ui);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  white-space: nowrap;
  letter-spacing: 0.01em;
  transition: all 0.12s;
}
.toolbar-btn:hover {
  background: var(--bg-raised);
  color: var(--text-primary);
  border-color: var(--border-default);
}
.toolbar-btn.active {
  background: var(--accent-dim);
  color: var(--accent-hover);
  border-color: rgba(77, 143, 255, 0.3);
}
/* Tier 1 — Actionable buttons: always look interactive (see ADR 0022) */
.toolbar-btn--actionable {
  background: var(--bg-raised);
  color: var(--text-secondary);
  border-color: var(--border-strong);
}
.toolbar-btn--actionable:hover {
  background: var(--accent-dim);
  color: var(--accent-hover);
  border-color: rgba(77, 143, 255, 0.4);
}
/* Per-button placeholders — add overrides here when a button needs to differ from --actionable */
.toolbar-btn--icon-mode {
}
.toolbar-btn--org-tree {
}
.toolbar-btn--all-layers {
}
.toolbar-btn--all-views {
}
.toolbar-btn--focus {
}
/* Split export button group */
.toolbar-btn-group {
  position: relative;
  display: flex;
  align-items: center;
}
.toolbar-btn--export-main {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  border-right: none;
}
.toolbar-btn--export-toggle {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 3px 6px;
}
/* Export mode dropdown menu */
.export-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  z-index: 100;
  min-width: 160px;
  padding: 4px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.export-menu-item {
  background: transparent;
  border: none;
  border-radius: calc(var(--radius-sm) - 2px);
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  padding: 5px 10px;
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.1s;
}
.export-menu-item:hover:not(:disabled) {
  background: var(--accent-dim);
  color: var(--accent-hover);
}
.export-menu-item.active {
  color: var(--accent-hover);
}
.export-menu-item:disabled {
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.5;
}
/* Reference button — bolder weight to stand out as a persistent entry point */
.toolbar-btn--reference {
  font-weight: 600;
}
.view-kind-toolbar {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 4px 10px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-default);
  flex-shrink: 0;
}
/* ── Reference Panel ────────────────────────────────────────────── */
.reference-panel-overlay {
  position: absolute;
  inset: 0;
  z-index: 200;
  background: rgba(7, 9, 15, 0.55);
  display: flex;
  justify-content: flex-end;
  backdrop-filter: blur(3px);
  animation: overlayFadeIn 0.16s ease-out;
}
@keyframes overlayFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.reference-panel {
  width: min(480px, 100%);
  height: 100%;
  background: var(--bg-raised);
  border-left: 1px solid var(--border-strong);
  display: flex;
  flex-direction: column;
  box-shadow:
    -12px 0 40px rgba(0, 0, 0, 0.6),
    -1px 0 0 var(--feather-dim);
  animation: panelSlideIn 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
@keyframes panelSlideIn {
  from {
    transform: translateX(24px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
.reference-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border-default);
  background: linear-gradient(to bottom, var(--bg-overlay) 0%, var(--bg-raised) 100%);
  flex-shrink: 0;
}
.reference-panel-title {
  font-weight: 700;
  font-size: 13px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.reference-panel-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 15px;
  cursor: pointer;
  padding: 2px 5px;
  line-height: 1;
  border-radius: var(--radius-xs);
  transition: all 0.12s;
}
.reference-panel-close:hover {
  color: var(--text-primary);
  background: var(--bg-overlay);
}
.reference-panel-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-default);
  flex-shrink: 0;
  background: var(--bg-surface);
}
.reference-panel-tab {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 8px 4px;
  font-size: 11.5px;
  font-weight: 500;
  font-family: var(--font-ui);
  cursor: pointer;
  text-align: center;
  letter-spacing: 0.01em;
  transition: all 0.12s;
}
.reference-panel-tab:hover {
  color: var(--text-secondary);
  background: var(--bg-raised);
}
.reference-panel-tab.active {
  color: var(--accent-hover);
  border-bottom-color: var(--accent);
}
.reference-panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}
.reference-tab-body {
  padding: 12px 16px;
}
.reference-tab-body h3 {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--text-muted);
  margin: 18px 0 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border-default);
  text-transform: uppercase;
  letter-spacing: 0.09em;
}
.reference-tab-body h3:first-child {
  margin-top: 0;
}
.reference-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin-bottom: 8px;
}
.reference-table th {
  text-align: left;
  padding: 5px 8px;
  color: var(--text-muted);
  font-weight: 700;
  border-bottom: 1px solid var(--border-default);
  white-space: nowrap;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
.reference-table td {
  padding: 5px 8px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-faint);
  vertical-align: top;
}
.reference-table code {
  background: var(--bg-void);
  padding: 1px 4px;
  border-radius: var(--radius-xs);
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent-hover);
  margin-right: 4px;
}
.reference-code-block {
  background: var(--bg-void);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 12px;
  overflow-x: auto;
  margin-bottom: 8px;
  position: relative;
}
/* Subtle inner top highlight */
.reference-code-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.reference-code-block pre {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  line-height: 1.55;
  white-space: pre-wrap;
  margin: 0;
}
.reference-badge-preview {
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-size: 10px;
  font-family: var(--font-mono);
  color: #fff;
  white-space: nowrap;
}
.reference-builtin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 11.5px;
  color: var(--text-muted);
}
.reference-copy-btn {
  background: var(--bg-overlay);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 3px 10px;
  font-size: 11px;
  font-family: var(--font-ui);
  cursor: pointer;
  transition: all 0.12s;
}
.reference-copy-btn:hover {
  background: var(--bg-selected);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.reference-unsupported {
  color: var(--text-muted);
  font-size: 13px;
  padding: 16px 0;
  font-style: italic;
}