:root {
  /* Base (dark) theme tokens */
  --bg: #0f172a;
  --fg: #e2e8f0;
  --muted: #94a3b8;
  --panel: #111827;
  --accent: #22c55e;
  --accent-2: #60a5fa;
  --alt: #0b1220;
  --ac2-rgb: 96,165,250;         /* blue (rgb) */
  --border-rgb: 148,163,184;     /* slate-400 */
  --panel-rgb: 2,6,23;           /* near-black */
  --bg-gradient: linear-gradient(180deg, #0b1020, #0c1022 40%, #0b0f1c 100%);
  --surface: rgba(2,6,23,.6);
  --surface-strong: rgba(2,6,23,.92);
  --surface-muted: rgba(15,23,42,.5);
  --sidebar-glass: rgba(17, 24, 39, 0.75);
  --heading: #e5f2ff;
  --chart-title: #9cc3ff;
  --ac2-text: #9cc3ff;
  --success-rgb: 34,197,94;      /* emerald-500 */
  --success-text: #86efac;       /* emerald-200 for dark */
  --danger-rgb: 239,68,68;       /* red-500 */
  --danger-text: #fecaca;        /* red-200 for dark */
  --kpi-value: #bbf7d0;          /* green on dark */
}

/* Light theme overrides */
:root[data-theme="light"] {
  --bg: #f8fafc;
  --fg: #0f172a;
  --muted: #334155;
  --panel: #ffffff;
  --alt: #ffffff;
  --accent: #0ea5e9;
  --accent-2: #2563eb;
  --ac2-rgb: 37,99,235;
  --border-rgb: 203,213,225;
  --panel-rgb: 255,255,255;
  --bg-gradient: linear-gradient(180deg, #f8fafc, #f1f5f9 40%, #e2e8f0 100%);
  --surface: rgba(255,255,255,.85);
  --surface-strong: rgba(255,255,255,.98);
  --surface-muted: rgba(255,255,255,.72);
  --sidebar-glass: rgba(255,255,255,.75);
  --heading: #0f172a;
  --chart-title: #1e40af;
  --ac2-text: #1e3a8a;
  --success-text: #166534;       /* emerald-800 for light */
  --danger-text: #991b1b;        /* red-800 for light */
  --kpi-value: #166534;          /* darker green for light */
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--fg);
  background: var(--bg-gradient);
}
a { color: inherit; text-decoration: none; }

.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0; width: 330px;
  background: var(--sidebar-glass);
  border-right: 1px solid rgba(var(--border-rgb), 0.15);
  backdrop-filter: blur(8px);
  padding: 20px 16px; z-index: 10;
  display: flex; flex-direction: column; overflow: hidden;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; letter-spacing: .2px; }
.brand svg { color: var(--accent); }
.brand .file-menu { margin-left: auto; position: relative; }
.file-menu-btn { padding: 6px 8px; font-size: 12px; border-radius: 8px; background: var(--surface); color: var(--fg); border: 1px solid rgba(var(--border-rgb),.3); cursor: pointer; }
.file-menu-btn:hover, .file-menu-btn[aria-expanded="true"] { background: rgba(var(--ac2-rgb),.12); border-color: rgba(var(--ac2-rgb),.35); }
.file-menu-list { position: absolute; right: 0; top: calc(100% + 6px); min-width: 180px; background: var(--surface-strong); border: 1px solid rgba(var(--border-rgb),.35); border-radius: 10px; padding: 6px; box-shadow: 0 10px 28px rgba(0,0,0,.35); z-index: 50; display: none; }
.file-menu.open .file-menu-list { display: block; }
.file-menu-list button { width: 100%; text-align: left; font-size: 13px; padding: 8px 10px; border-radius: 8px; border: 1px solid transparent; background: transparent; color: var(--fg); cursor: pointer; }
.file-menu-list button:hover { background: rgba(var(--ac2-rgb),.12); border-color: rgba(var(--ac2-rgb),.2); }
.file-menu-list hr { opacity: .7; }
.sidebar nav { margin-top: 16px; display: grid; gap: 6px; overflow-y: auto; padding-right: 6px; }
.nav-view-switch { display: grid; grid-template-columns: 1fr 1fr auto; gap: 6px; margin-top: 10px; }
.nav-view-switch .view-btn { font-size: 12px; padding: 6px 8px; border-radius: 8px; background: var(--surface); color: var(--muted); border: 1px solid rgba(var(--border-rgb),.2); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.nav-view-switch .view-btn[aria-pressed="true"] { color: var(--fg); background: rgba(var(--ac2-rgb),.12); border-color: rgba(var(--ac2-rgb), .35); }
.nav-view-switch .view-present { padding: 6px; }
.nav-view-switch .view-btn svg { width: 14px; height: 14px; }
.nav-details-toggle { margin-top: 6px; font-size: 12px; color: var(--muted); }
.nav-details-toggle input { margin-right: 6px; }
.nav-tiles { display: none; margin-top: 10px; overflow-y: auto; padding-right: 6px; }
.sidebar.tiles-view .nav-tiles { display: grid; grid-template-columns: 1fr; gap: 8px; }
.sidebar.tiles-view nav { display: none; }
.nav-tile { position: relative; display: grid; text-decoration: none; color: inherit; }
.tile-card { position: relative; border: 1px solid rgba(var(--border-rgb),.2); border-radius: 10px; padding: 8px; background: var(--surface); overflow: clip; }
.tile-card.active { border-color: rgba(var(--ac2-rgb),.5); }
.tile-card:hover { border-color: rgba(var(--ac2-rgb),.5); }
.nav-tile .tile-title { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.nav-tile .thumb { background: var(--panel); border: 1px solid rgba(var(--border-rgb),.2); border-radius: 8px; aspect-ratio: 16 / 9; height: auto; overflow: hidden; position: relative; }
.nav-tile .thumb-inner { transform-origin: top left; position: absolute; top: 0; left: 0; width: 1080px; }
.nav-tile .tile-actions { position: absolute; right: 6px; top: 6px; display: none; gap: 6px; }
.nav-tile:hover .tile-actions, .nav-tile:focus-within .tile-actions { display: inline-flex; }
.nav-tile .tile-action { width: 22px; height: 22px; border-radius: 6px; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; border: 1px solid rgba(var(--border-rgb),.35); background: rgba(var(--panel-rgb),.8); color: var(--muted); cursor: pointer; }
.nav-tile .tile-action:hover { color: var(--fg); border-color: rgba(var(--ac2-rgb),.45); background: rgba(var(--ac2-rgb),.12); }
.nav-tile .tile-action.danger:hover { background: rgba(var(--danger-rgb),.15); color: var(--danger-text); border-color: rgba(var(--danger-rgb),.45); }
.sidebar.tiles-view .nav-tools { margin-top: 10px; }
.tile-card:hover .nav-delete { display: inline-flex; }
.tile-card:hover .nav-duplicate { display: inline-flex; }
.tile-card .nav-insert-area { position: absolute; left: 0; right: 0; height: 12px; display: none; align-items: center; pointer-events: none; z-index: 5; }
.tile-card:hover .nav-insert-area { display: flex; }
.tile-card .nav-insert-area.before { top: 0; }
.tile-card .nav-insert-area.after { bottom: 0; }
.nav-tile .nav-insert-area .line { flex: 1; height: 0; border-top: 1px dashed rgba(var(--border-rgb),.35); }
.nav-tile .nav-insert-area .ins-btn { pointer-events: auto; width: 18px; height: 18px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; border: 1px solid rgba(var(--success-rgb),.5); background: rgba(var(--success-rgb),.12); color: var(--success-text); font-weight: 700; font-size: 12px; margin: 0 6px; }
.nav-tile .nav-insert-area .ins-btn:hover { background: rgba(var(--success-rgb),.25); color: var(--success-text); }

/* Subtile (details) previews under each main tile */
.nav-subtiles { display: grid; gap: 6px; padding-left: 28px; margin-top: 6px; position: relative; }
.nav-subtile { position: relative; display: inline-grid; gap: 4px; border: 1px dashed rgba(var(--border-rgb),.25); border-radius: 8px; padding: 6px; background: var(--surface); margin-left: 8px; justify-self: right; width: var(--subtile-thumb-width, 200px); }
/* Branch connector: extend horizontal line further when preview is right-aligned */
.nav-subtile::before { content: ""; position: absolute; left: -12px; top: 8px; width: 1px; height: 12px; background: rgba(var(--border-rgb),.55); }
.nav-subtile::after { content: ""; position: absolute; left: -12px; top: 20px; width: 12px; height: 1px; background: rgba(var(--border-rgb),.55); }
.nav-subtile.active { border-color: rgba(var(--ac2-rgb),.5); }
/* Title aligns with right-aligned preview */
.nav-subtile .subtile-title { font-size: 11px; color: var(--muted); text-align: left; }
/* Right-align the preview thumbnail and constrain its width */
.nav-subtile .thumb {
  background: var(--panel);
  border: 1px solid rgba(var(--border-rgb),.2);
  border-radius: 6px;
  aspect-ratio: 16 / 9;
  height: auto;
  overflow: hidden;
  position: relative;
  width: 100%; /* match subtile container width */
}
.nav-subtile .thumb-inner { transform-origin: top left; position: absolute; top: 0; left: 0; width: 600px; }
.nav-subtile .nav-det-delete { position: absolute; right: 6px; top: 6px; width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; border-radius: 6px; border: 1px solid rgba(var(--border-rgb),.35); background: rgba(var(--panel-rgb),.6); color: var(--muted); cursor: pointer; }
.nav-subtile .nav-det-delete:hover { color: var(--fg); border-color: rgba(var(--ac2-rgb),.45); background: rgba(var(--ac2-rgb),.12); }
.nav-subtile:hover { border-color: rgba(var(--ac2-rgb),.5); }


.print-btn { margin-top: 12px; width: 100%; padding: 8px 10px; border-radius: 8px; border: 1px solid rgba(var(--ac2-rgb),.5); background: rgba(var(--ac2-rgb),.15); color: var(--ac2-text); cursor: pointer; }
.print-btn:hover { background: rgba(var(--ac2-rgb),.25); color: #e5f2ff; }
.quick-save-btn { margin-top: 8px; width: 100%; padding: 8px 10px; border-radius: 8px; border: 1px solid rgba(var(--ac2-rgb),.6); background: rgba(var(--ac2-rgb),.18); color: var(--ac2-text); cursor: pointer; display: inline-flex; align-items: center; gap: 8px; justify-content: center; }
.quick-save-btn:hover { background: rgba(var(--ac2-rgb),.28); color: #e5f2ff; }
.settings-btn { margin-top: 8px; width: 100%; padding: 8px 10px; border-radius: 8px; border: 1px solid rgba(var(--border-rgb),.35); background: var(--surface); color: var(--fg); cursor: pointer; display: inline-flex; align-items: center; gap: 8px; justify-content: center; }
.settings-btn:hover { background: var(--surface-strong); }
.load-project-btn { margin-top: 8px; width: 100%; padding: 8px 10px; border-radius: 8px; border: 1px solid rgba(var(--ac2-rgb),.45); background: rgba(var(--ac2-rgb),.12); color: var(--ac2-text); cursor: pointer; }
.load-project-btn:hover { background: rgba(var(--ac2-rgb),.2); color: #e5f2ff; }
.export-project-btn, .share-project-btn { width: 100%; padding: 8px 10px; border-radius: 8px; border: 1px solid rgba(var(--border-rgb),.45); background: rgba(var(--border-rgb),.12); color: var(--fg); cursor: pointer; }
.export-project-btn:hover, .share-project-btn:hover { background: rgba(var(--border-rgb),.2); color: var(--fg); }

/* Toast / snackbar */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(8px);
  background: var(--surface-strong);
  border: 1px solid rgba(var(--border-rgb),.35);
  color: var(--fg);
  padding: 10px 14px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
  opacity: 0;
  transition: opacity .3s ease, transform .3s ease;
  z-index: 1000;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.nav-link { padding: 8px 6px; border-radius: 8px; color: var(--muted); }
.nav-link.active, .nav-link:hover { color: var(--fg); background: rgba(var(--ac2-rgb), 0.1); }
/* Make nav links align with grip */
.nav-link { display: inline-flex; align-items: center; gap: 6px; }

/* Projects modal */
.project-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 10px; }
.project-card { position: relative; border: 1px solid rgba(var(--border-rgb),.25); border-radius: 10px; background: var(--surface); padding: 8px; cursor: pointer; display: grid; gap: 6px; }
.project-card .proj-actions { position: absolute; right: 6px; top: 6px; display: none; gap: 6px; }
.project-card:hover .proj-actions, .project-card:focus-within .proj-actions { display: inline-flex; }
/* Override nav button positioning when used inside project cards */
.project-card .proj-actions .nav-delete,
.project-card .proj-actions .nav-duplicate {
  position: static;
  transform: none;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}
.project-card:hover { border-color: rgba(var(--ac2-rgb),.45); background: rgba(var(--ac2-rgb),.08); }
.project-card .thumb { background: var(--panel); border: 1px solid rgba(var(--border-rgb),.2); border-radius: 8px; aspect-ratio: 16 / 9; height: auto; overflow: hidden; position: relative; }
.project-card .thumb-inner { transform-origin: top left; position: absolute; top: 0; left: 0; width: 1080px; }

/* Notes overlay on thumbnails (nav tiles + subtiles) */
.nav-tile .thumb .notes-overlay,
.nav-subtile .thumb .notes-overlay {
  position: absolute;
  left: 6px;
  bottom: 6px;
  right: 6px;
  max-height: 40%;
  background: linear-gradient(180deg, rgba(2,6,23,0.75), rgba(2,6,23,0.9));
  color: #e5e7eb;
  border: 1px solid rgba(148,163,184,0.3);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 11px;
  line-height: 1.25;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  pointer-events: none;
}
.project-card .title { font-size: 13px; color: var(--fg); display: flex; align-items: center; gap: 6px; }
.project-card .meta { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.badge { display: inline-flex; align-items: center; gap: 4px; border: 1px solid rgba(var(--border-rgb),.35); border-radius: 999px; padding: 2px 6px; font-size: 11px; color: var(--muted); }

/* Drag grip in nav */
.nav-grip {
  width: 18px; height: 18px; border-radius: 4px;
  border: 1px solid rgba(var(--border-rgb),.35);
  background: var(--surface-muted); color: #9aa9bf;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: grab; font-size: 12px; line-height: 1; opacity: 0; pointer-events: none;
  transition: opacity .15s ease, background .15s ease, border-color .15s ease;
}
.nav-item:hover .nav-grip, .nav-item:focus-within .nav-grip { opacity: .95; pointer-events: auto; }
.nav-grip:hover { background: var(--surface); border-color: rgba(var(--border-rgb),.5); color: #cbd5e1; }
.nav-grip:active { cursor: grabbing; }

/* Drag-over hints for reordering */
.nav-item { position: relative; }
.nav-item.dragging { opacity: .6; }

/* Single drop indicator element placed by JS */
.nav-drop-indicator {
  height: 0; border-top: 2px dashed rgba(148,163,184,.6);
  margin: 4px 0; opacity: .95;
  pointer-events: none; /* prevent indicator from intercepting drag events */
}

/* Sidebar tools and Insert button */
.sidebar .nav-tools { display: flex; flex-direction: column; gap: 6px; margin-top: 12px; background: var(--bg);}
.nav-tools .export-share-row { display: flex; gap: 6px; }
.nav-tools .export-share-row .export-project-btn,
.nav-tools .export-share-row .share-project-btn { flex: 1; }
.sidebar .load-project-btn, .sidebar .export-project-btn, .sidebar .share-project-btn { font-size: 12px; opacity: .95; display: inline-flex; align-items: center; gap: 8px; justify-content: center; }

.snap-container { scroll-snap-type: y mandatory; height: 100vh; overflow-y: scroll; margin-left: 220px; }
.snap-section { scroll-snap-align: start; min-height: 100vh; display: flex; align-items: center; }
.snap-section.dark { background: radial-gradient(1200px 400px at 60% 30%, rgba(34,197,94,0.1), transparent 60%) no-repeat; }
.snap-section.alt { background: rgba(var(--panel-rgb), 0.08); }
.wrap { width: min(1080px, 92vw); min-height: 608px; margin: 0 auto; padding: 64px 0; position: relative; }
/* Ensure large canvases never overflow slide width */
.wrap canvas { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 12px 0; }
h1 { font-size: 42px; letter-spacing: .3px; }
h2 { font-size: 28px; color: var(--heading); }
.lede { color: var(--muted); font-size: 18px; max-width: 70ch; }
h2 + .lede { margin-top: -6px; margin-bottom: 10px; }
h3 { margin-top: 18px; color: var(--fg); font-weight: 600; }
.chart-title { margin-bottom: 8px; color: var(--chart-title); font-weight: 600; }
.bullets { padding-left: 18px; display: grid; gap: 8px; }
.bullets li { color: var(--fg); }
.grid.two { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.chart-row { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; align-items: start; }
.statcards { display: grid; gap: 12px; }
.statcard { background: var(--surface); border: 1px solid rgba(var(--border-rgb),.15); border-radius: 10px; padding: 12px 14px; }
.statcard .label { color: var(--muted); }
.statcard .value { font-size: 22px; font-weight: 700; color: var(--kpi-value); }

.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); margin-top: 10px; }
.cards .card { background: var(--surface); border: 1px solid rgba(var(--border-rgb),.15); border-radius: 10px; padding: 12px 14px; cursor: pointer; transition: transform .15s ease, border-color .15s ease; }
.cards .card:hover { transform: translateY(-2px); border-color: rgba(var(--ac2-rgb),.5); }
.cards .title { color: var(--fg); font-weight: 600; margin-bottom: 6px; }
.cards .preview { color: var(--muted); font-size: 13px; max-height: 80px; overflow: hidden; }

/* Delete button styling for Appendix references */
#appendix-cards .card { position: relative; }
#appendix-cards .card .remove {
  position: absolute; right: 8px; top: 8px;
  width: 20px; height: 20px; border-radius: 50%; display: none;
  align-items: center; justify-content: center; cursor: pointer;
  border: 1px solid rgba(var(--danger-rgb),.45); background: rgba(var(--danger-rgb),.12); color: var(--danger-text);
  font-weight: 700; font-size: 12px; line-height: 1;
}
#appendix-cards .card:hover .remove, #appendix-cards .card:focus-within .remove { display: inline-flex; }
#appendix-cards .card .remove:hover { background: rgba(var(--danger-rgb),.25); color: var(--danger-text); }

/* Roadmap list */
.roadmap { list-style: decimal; list-style-position: inside; }

.table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.table th, .table td { border: 1px solid rgba(var(--border-rgb),.18); padding: 8px 10px; text-align: left; }
.table th { background: var(--surface); color: var(--muted); font-weight: 600; }

/* Tooltip for charts (simple) */
.tooltip { position: fixed; pointer-events: none; background: var(--surface-strong); border: 1px solid rgba(var(--border-rgb),.25); color: var(--fg); padding: 6px 8px; border-radius: 6px; font-size: 12px; z-index: 100; transform: translate(-50%, -150%); }

.diagram { background: var(--surface-muted); border: 1px solid rgba(var(--border-rgb),.15); border-radius: 12px; padding: 8px; }
.node { fill: rgba(96, 165, 250, 0.12); stroke: rgba(96,165,250,.6); }
.edge { stroke: rgba(34,197,94,.7); stroke-width: 2; }
.diagram text { fill: var(--fg); font-size: 12px; paint-order: stroke; stroke: rgba(var(--panel-rgb),.0); stroke-width: 0px; }

/* Expanders (details/summary) */
.expanders { display: grid; gap: 10px; margin-top: 12px; }
details.expander { background: var(--surface); border: 1px solid rgba(var(--border-rgb),.2); border-radius: 10px; overflow: hidden; }
details.expander[open] { border-color: rgba(var(--ac2-rgb),.6); }
details.expander summary { list-style: none; cursor: pointer; padding: 10px 12px; display: flex; align-items: center; justify-content: space-between; color: var(--fg); }
details.expander summary::-webkit-details-marker { display: none; }
details.expander summary:after { content: '▸'; color: #94a3b8; transition: transform .2s ease; }
details.expander[open] summary:after { transform: rotate(90deg); color: var(--accent-2); }
details.expander .content { padding: 0 12px 12px; color: var(--fg); }

/* Horizontally scrollable feature matrix */
details.expander.feature-matrix .content { overflow-x: auto; -webkit-overflow-scrolling: touch; }
details.expander.feature-matrix .content .table { min-width: 1000px; }

.caption { color: var(--muted); font-size: 13px; margin-top: 6px; font-style: italic; }
.footnote { color: var(--muted); font-size: 12px; margin-top: 6px; }

/* Editable config controls */
.config { display: grid; gap: 8px; margin: 8px 0 4px; }
.config .row { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; }
.config .row.wide { grid-template-columns: 1fr 2fr; }
.config label { color: var(--muted); font-size: 13px; }
.config input[type="number"],
.config input[type="text"],
.config select,
.config textarea { width: 120px; padding: 6px 8px; border-radius: 6px; border: 1px solid rgba(var(--border-rgb),.35); background: var(--surface); color: var(--fg); }
.config textarea { width: 100%; min-height: 72px; }
.config select { padding-right: 28px; }
.config input:focus, .config select:focus, .config textarea:focus { outline: 2px solid rgba(var(--ac2-rgb),.45); outline-offset: 2px; }
.config .hint { color: #94a3b8; font-size: 12px; }

/* Key, AI, and Print overlays */
#key-overlay, #ai-overlay, #print-overlay, #confirm-overlay, #projects-overlay, #unsaved-overlay, #save-overlay { position: fixed; inset: 0; background: rgba(var(--panel-rgb),.55); display: none; align-items: center; justify-content: center; z-index: 60; backdrop-filter: blur(8px) saturate(120%); }
#key-overlay.open, #ai-overlay.open, #print-overlay.open, #confirm-overlay.open, #projects-overlay.open, #unsaved-overlay.open, #save-overlay.open { display: flex; }
/* Ensure confirm/save modals stack above Projects overlay */
#confirm-overlay { z-index: 80; }
#save-overlay { z-index: 80; }
.overlay-body .config input[type="password"],
.overlay-body .config input[type="text"],
.overlay-body .config input[type="number"],
.overlay-body .config select,
.overlay-body .config select { width: 100%; }
.config .row.wide input[type="text"], .config .row.wide select { width: 100%; justify-self: stretch; }

/* Style inputs and action button in API Key modal */
#key-overlay .config input[type="password"],
#key-overlay .config input[type="text"] {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(var(--border-rgb),.35);
  background: var(--surface);
  color: var(--fg);
}
#key-overlay .config input::placeholder { color: #94a3b8; }
#api-key-save {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid rgba(var(--ac2-rgb),.6);
  background: rgba(var(--ac2-rgb),.18);
  color: var(--ac2-text);
  font-weight: 600;
  cursor: pointer;
}
#api-key-save:hover { background: rgba(var(--ac2-rgb),.28); color: #e5f2ff; }
#api-key-save:focus { outline: 2px solid rgba(var(--ac2-rgb),.45); outline-offset: 2px; }
/* Section edit affordance */
.section-edit {
  position: absolute;
  right: 10px;
  bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  font-size: 12px;
  border-radius: 16px;
  border: 1px solid rgba(var(--border-rgb),.25);
  background: var(--surface);
  color: var(--ac2-text);
  opacity: .15;
  cursor: pointer;
  transition: opacity .15s ease, transform .15s ease, border-color .15s ease, background .15s ease;
  z-index: 60; /* above .draw-overlay (z-index:5) */
}
/* Hide Edit button while drawing to avoid conflicting actions */
.snap-section.drawing-active .section-edit:not(.section-draw) { display: none !important; }
.wrap:hover .section-edit { opacity: .9; }
.section-edit:hover { opacity: 1; transform: translateY(-1px); border-color: rgba(var(--ac2-rgb),.45); color: var(--fg); background: var(--surface-strong); }
.section-edit .glyph { font-size: 12px; opacity: .9; }

/* Hide edit UI during print/export */
.print-mode .section-edit, .export-mode .section-edit, .editor-open .section-edit { display: none !important; }
/* Hide drawing overlays while composer is open */
body.editor-open .draw-overlay { display: none !important; }

/* Sidebar sublinks */
.nav-sublink { position: relative; padding: 4px 28px 4px 48px; border-radius: 6px; color: var(--muted); font-size: 14px; }
.nav-sublink:hover, .nav-sublink.active { color: var(--fg); background: rgba(var(--ac2-rgb),.08); }
/* Delete button for detail sublinks */
.nav-sublink .nav-det-delete {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; border-radius: 50%; display: none;
  align-items: center; justify-content: center; cursor: pointer;
  border: 1px solid rgba(var(--danger-rgb),.45); background: rgba(var(--danger-rgb),.12); color: var(--danger-text); font-weight: 700; font-size: 12px;
}
.nav-sublink:hover .nav-det-delete, .nav-sublink:focus-within .nav-det-delete { display: inline-flex; }
.nav-sublink .nav-det-delete:hover { background: rgba(var(--danger-rgb),.25); color: var(--danger-text); }

/* Sidebar nav items with inline controls */
.nav-item { position: relative; padding: 0; }
.nav-delete { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; border-radius: 50%; display: none; align-items: center; justify-content: center; cursor: pointer; border: 1px solid rgba(var(--danger-rgb),.45); background: rgba(var(--danger-rgb),.12); color: var(--danger-text); font-weight: 700; font-size: 12px; }
.nav-item:hover .nav-delete { display: inline-flex; }
.nav-delete:hover { background: rgba(var(--danger-rgb),.25); color: var(--danger-text); }

/* Duplicate button next to delete */
.nav-duplicate {
  position: absolute; right: 28px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; border-radius: 50%; display: none;
  align-items: center; justify-content: center; cursor: pointer;
  border: 1px solid rgba(var(--ac2-rgb),.45); background: rgba(var(--ac2-rgb),.12); color: var(--ac2-text); font-weight: 700; font-size: 12px;
}
.nav-item:hover .nav-duplicate { display: inline-flex; }
.nav-duplicate:hover { background: rgba(var(--ac2-rgb),.22); color: #e5f2ff; }

/* Inline rename field */
.nav-rename-input {
  flex: 1 1 auto; min-width: 0; width: auto;
  padding: 6px 8px; border-radius: 8px;
  border: 1px solid rgba(var(--border-rgb),.35);
  background: var(--surface); color: var(--fg);
  font: inherit;
}
.nav-item.renaming .nav-delete,
.nav-item.renaming .nav-duplicate { display: none !important; }
.nav-item.renaming .nav-insert-area { display: none !important; }
.nav-item.renaming .nav-line { display: none !important; }
.nav-item.renaming .nav-grip { opacity: 0 !important; pointer-events: none !important; }
.nav-insert-area { position: absolute; left: 0; right: 0; height: 12px; display: none; align-items: center; pointer-events: none; }
.nav-item:hover .nav-insert-area { display: flex; }
.nav-insert-area.before { top: 0; }
.nav-insert-area.after { bottom: 0; }
.nav-insert-area .line { flex: 1; height: 0; border-top: 1px dashed rgba(var(--border-rgb),.35); }
.nav-insert-area .ins-btn { pointer-events: auto; width: 18px; height: 18px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; border: 1px solid rgba(var(--success-rgb),.5); background: rgba(var(--success-rgb),.12); color: var(--success-text); font-weight: 700; font-size: 12px; margin: 0 6px; }
.nav-insert-area .ins-btn:hover { background: rgba(var(--success-rgb),.25); color: var(--success-text); }

.roadmap { display: grid; gap: 10px; counter-reset: step; }
.roadmap li { background: var(--surface); border: 1px solid rgba(var(--border-rgb),.15); border-radius: 12px; padding: 10px 12px; }

/* Enter animations */
[data-animate] { opacity: 0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease; }
[data-animate].in { opacity: 1; transform: translateY(0); }

/* Themed scrollbars (Firefox) */
html { scrollbar-color: rgba(var(--border-rgb),.35) rgba(var(--panel-rgb),.35); scrollbar-width: thin; }
.snap-container, .sidebar nav, .ai-builder .messages { scrollbar-color: rgba(var(--border-rgb),.35) rgba(var(--panel-rgb),.35); scrollbar-width: thin; }

/* Themed scrollbars (WebKit) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: rgba(var(--panel-rgb),.35); border-radius: 8px; }
::-webkit-scrollbar-thumb { background: rgba(var(--border-rgb),.28); border-radius: 8px; border: 1px solid rgba(var(--border-rgb),.2); }
::-webkit-scrollbar-thumb:hover { background: rgba(148,163,184,.4); }
/* Narrower scrollbar inside sidebar nav */
.sidebar nav::-webkit-scrollbar { width: 8px; }

@media (max-width: 960px) {
  .sidebar { position: sticky; width: 100%; height: auto; display: flex; flex-direction: row; align-items: center; gap: 16px; }
  .sidebar nav { display: none; }
  .snap-container { margin-left: 0; }
  .grid.two, .chart-row { grid-template-columns: 1fr; }
}

.details-btn {
  position: absolute; top: 16px; right: 8px; width: 36px; height: 36px;
  border-radius: 50%; border: 1px solid rgba(var(--ac2-rgb),.45);
  background: rgba(var(--ac2-rgb),.14); color: var(--ac2-text); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  opacity: .15;
  transition: background .2s ease, color .2s ease, opacity .15s ease;
  font-weight: 700;
}
.wrap:hover .details-btn { opacity: .95; }
.details-btn:hover { background: rgba(var(--ac2-rgb),.28); color: #e5f2ff; opacity: 1; }
.details-btn:focus, .details-btn:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; opacity: 1; }
/* Hide section-level details buttons inside the editor's live preview to avoid overlap */
.editor-open #ins-live .details-btn { display: none !important; }

/* Hide deep-dive sections from vertical flow; content will render in overlay */
.snap-section[data-section="detail"] { display: none; }

/* Overlay for side-swipe details */
#details-overlay { position: fixed; inset: 0; z-index: 100; pointer-events: none; }
#details-overlay::before { content: ""; position: absolute; inset: 0; background: rgba(var(--panel-rgb),.5); opacity: 0; transition: opacity .3s ease; }
#details-overlay .overlay-panel {
  position: absolute; top: 0; right: 0; height: 100%; width: min(840px, 92vw);
  background: var(--bg-gradient);
  border-left: 1px solid rgba(var(--border-rgb),.2);
  transform: translateX(100%);
  transition: transform .35s ease;
  box-shadow: -10px 0 30px rgba(0,0,0,.35);
}
#details-overlay.open { pointer-events: auto; }
#details-overlay.open::before { opacity: 1; }
#details-overlay.open .overlay-panel { transform: translateX(0); }
.overlay-body { padding: 20px 20px 24px; height: 100%; overflow-y: auto; }
.overlay-close {
  position: absolute; left: 8px; top: 10px;
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid rgba(var(--ac2-rgb),.5);
  margin-left: 10px;
  margin-top: 10px;
  background: rgba(var(--ac2-rgb),.18); color: var(--ac2-text);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  transition: background .2s ease, color .2s ease; font-weight: 700; font-size: 16px;
}
.overlay-close .arrow { display: inline-block; transform: rotate(180deg); line-height: 1; }
.overlay-close:hover { background: rgba(var(--ac2-rgb),.28); color: #e5f2ff; }
.overlay-close:focus { outline: 2px solid var(--accent-2); outline-offset: 2px; }
.overlay-body h2 { margin-left: 48px; }

/* Reuse details-btn style inside composer header */
.insert-panel .row.head .details-btn { position: static; width: 28px; height: 28px; opacity: .95; }
.insert-panel .row.head .details-btn:hover { opacity: 1; }

/* About & Legal block in Settings */
.about-legal { display: grid; gap: 8px; margin-top: 6px; }
.about-legal .vendor-logo { margin-top: 8px; display: flex; justify-content: flex-end; align-items: center; gap: 8px; opacity: .9; }
.about-legal .vendor-logo img { height: 28px; width: auto; display: none; }
.about-legal .vendor-logo img.dark { display: inline; }
:root[data-theme="light"] .about-legal .vendor-logo img.dark { display: none; }
:root[data-theme="light"] .about-legal .vendor-logo img.light { display: inline; }
:root[data-theme="dark"] #ins-selected .card .remove { color: var(--danger-text); }

/* Keep nav-tools anchored at bottom for visual distinction */
.nav-tools { position: absolute; left: 16px; right: 16px; bottom: 12px; padding-top: 8px; margin-top: 0; }
/* Ensure scrollable areas don't go under fixed nav-tools */
.sidebar nav, .nav-tiles { margin-bottom: 230px; }

/* Inline Insert Editor */
.insert-editor { background: rgba(var(--panel-rgb), 0.38); }
.insert-panel { position: relative; background: var(--surface); border: 1px solid rgba(var(--ac2-rgb),.35); border-radius: 14px; border-color: lightcoral; padding: 16px; box-shadow: 0 12px 36px rgba(0,0,0,.35); }
.insert-panel.drag-over { border-color: rgba(var(--ac2-rgb), .8); box-shadow: inset 0 0 0 2px rgba(var(--ac2-rgb), .25), 0 12px 36px rgba(0,0,0,.35); }
.insert-panel .row.head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.insert-panel .chips { display: flex; flex-wrap: wrap; gap: 6px; margin-left: auto; }
.insert-editor .wrap { display: grid; grid-template-rows: auto 1fr auto; min-height: 100vh; }
#ins-live { padding: 8px 0; }
/* Smoothly expand live preview when Draw opens */
#ins-live { transition: min-height .25s ease; }
.insert-panel.generating::after { content: ''; position: absolute; left: 10px; right: 10px; top: -2px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, #60a5fa, #22c55e, #f59e0b, #ef4444, #a78bfa, #60a5fa); background-size: 300% 100%; animation: siri-flow 2s linear infinite; box-shadow: 0 0 8px rgba(96,165,250,.4); }
@keyframes siri-flow { 0% { background-position: 0% 0; } 100% { background-position: 300% 0; } }
.insert-panel .drop-overlay {
  position: absolute; inset: 8px; border-radius: 12px; display: none;
  align-items: center; justify-content: center; text-align: center;
  border: 2px dashed rgba(var(--ac2-rgb), .45);
  background: rgba(var(--ac2-rgb), .06);
  color: var(--ac2-text); font-weight: 600; letter-spacing: .2px;
  pointer-events: none; opacity: 0; transform: scale(.98); z-index: 10;
}
.insert-panel.drag-over .drop-overlay { display: flex; opacity: 1; transform: scale(1); animation: drop-pulse 1.2s ease-in-out infinite; }
@keyframes drop-pulse { 0%{ box-shadow: 0 0 0 0 rgba(var(--ac2-rgb), .15);} 70%{ box-shadow: 0 0 0 8px rgba(var(--ac2-rgb), .0);} 100%{ box-shadow: 0 0 0 0 rgba(var(--ac2-rgb), .0);} }
.insert-panel .ins-greeting { text-align: left; color: #9aa9bf; margin: 4px 0 4px; }
.insert-panel .ins-greeting .glyph { font-size: 24px; margin-bottom: 4px; }
.insert-panel .ins-greeting h3 { margin: 0 0 4px; color: var(--fg); font-size: 18px; }
.insert-panel .ins-greeting .hints { display: grid; gap: 4px; padding-left: 18px; text-align: left; margin: 6px 0 0; }
.chip { border-radius: 999px; padding: 4px 10px; border: 1px solid rgba(var(--border-rgb),.35); background: var(--surface-muted); color: var(--fg); cursor: pointer; }
.chip.add { border-color: rgba(var(--success-rgb),.6); background: rgba(var(--success-rgb),.15); color: var(--success-text); font-weight: 700; }
.chip.add:hover { background: rgba(var(--success-rgb),.25); color: var(--success-text); }
.composer-slim { display: grid; grid-template-columns: 1fr; gap: 10px; align-items: start; }
.composer-slim.vertical { grid-template-columns: 1fr; }
.composer-slim textarea { min-height: 150px; padding: 12px 14px; border-radius: 12px; border: 1px solid rgba(var(--border-rgb),.35); background: var(--surface-muted); color: var(--fg); font-size: 15px; }
.composer-slim textarea.drag-over { border-color: rgba(var(--ac2-rgb),.8); background: rgba(var(--ac2-rgb),.08); box-shadow: inset 0 0 0 2px rgba(var(--ac2-rgb),.25); }
.drop-hint { font-size: 12px; color: #9aa9bf; margin-top: -4px; margin-bottom: 2px; }
.composer-slim .actions { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.composer-slim .actions .buttons-left { display: flex; gap: 8px; align-items: center; }
.composer-slim .actions .attach-right { margin-left: auto; }
.composer-slim .actions .btn { min-width: 120px; }
/* Buttons */
.btn { padding: 8px 12px; border-radius: 10px; border: 1px solid rgba(var(--border-rgb),.35); cursor: pointer; font-weight: 600; font-size: 13px; color: var(--fg); }
.btn.primary { border-color: rgba(var(--ac2-rgb),.6); background: rgba(var(--ac2-rgb),.18); color: var(--ac2-text); }
.btn.primary:hover { background: rgba(var(--ac2-rgb),.28); color: #e5f2ff; }
.btn.secondary { border-color: rgba(var(--border-rgb),.45); background: rgba(var(--border-rgb),.14); color: var(--fg); }
.btn.secondary:hover { background: rgba(var(--border-rgb),.22); color: var(--fg); }
.btn.ghost { border-color: rgba(var(--border-rgb),.25); background: transparent; color: var(--muted); }
.btn.ghost:hover { background: rgba(var(--border-rgb),.1); color: var(--fg); }
.btn.success { border-color: rgba(var(--success-rgb),.65); background: rgba(var(--success-rgb),.18); color: var(--success-text); }
.btn.success:hover { background: rgba(var(--success-rgb),.28); color: var(--success-text); }
.btn .ico-sparkles { width: 14px; height: 14px; vertical-align: -2px; margin-right: 6px; display: inline-block; }
/* Ensure sparkles icon visible in dark theme */
:root[data-theme="dark"] .btn .ico-sparkles { filter: invert(1) brightness(1.1); }
.btn.danger { border-color: rgba(var(--danger-rgb),.6); background: rgba(var(--danger-rgb),.18); color: var(--danger-text); }
.btn.danger:hover { background: rgba(var(--danger-rgb),.28); color: var(--danger-text); }
/* Light theme: make danger button text darker for readability */
:root[data-theme="light"] .btn.danger { border-color: rgba(var(--danger-rgb),.55); background: rgba(var(--danger-rgb),.14); color: var(--danger-text); }
:root[data-theme="light"] .btn.danger:hover { background: rgba(var(--danger-rgb),.22); }
.ins-status { font-size: 12px; color: #9aa9bf; margin: 6px 0 0; }
.ins-status.gen-active { position: relative; height: 10px; color: transparent; }
.ins-status .gen-bar { position: absolute; left: 0; right: 0; top: 4px; height: 4px; overflow: hidden; border-radius: 999px; background: rgba(var(--border-rgb), .2); }
.ins-status .gen-bar::before {
  content: '';
  position: absolute; left: -30%; top: 0; bottom: 0; width: 30%; border-radius: 999px;
  background: linear-gradient(90deg, rgba(var(--ac2-rgb),.15), rgba(var(--ac2-rgb),.45), rgba(var(--ac2-rgb),.15));
  animation: gen-slide 1.2s infinite ease-in-out;
}
@keyframes gen-slide {
  0% { left: -30%; }
  50% { left: 50%; }
  100% { left: 110%; }
}
.ins-stream { margin-top: 8px; border: 1px dashed rgba(var(--border-rgb),.35); border-radius: 10px; padding: 10px 12px; background: var(--surface); max-height: 140px; overflow: hidden; }
.ins-stream .stream-head { font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.ins-stream .stream-thoughts { display: grid; gap: 6px; }
.ins-stream .bubble { display: inline-block; background: rgba(var(--ac2-rgb), .12); border: 1px solid rgba(var(--ac2-rgb), .25); color: var(--fg); padding: 6px 8px; border-radius: 10px; font-size: 13px; max-width: 80ch; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ins-stream .stream-log { display: none !important; white-space: pre-wrap; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--muted); margin-top: 6px; max-height: 120px; overflow: auto; }
.ins-key { margin: 6px 0; }
.inline-key { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; }
.inline-key label { grid-column: 1 / -1; font-size: 12px; color: var(--muted); }
.inline-key input { padding: 8px 10px; border-radius: 8px; border: 1px solid rgba(var(--border-rgb),.35); background: var(--surface-muted); color: var(--fg); }
.ins-greeting .ins-head { display: flex; align-items: center; gap: 6px; position: relative; }
.ins-info { width: 18px; height: 18px; border-radius: 50%; border: 1px solid rgba(var(--border-rgb),.35); background: var(--surface); color: var(--muted); font-size: 12px; line-height: 1; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.ins-info:hover { background: rgba(var(--ac2-rgb),.12); color: var(--fg); border-color: rgba(var(--ac2-rgb),.35); }
.ins-tooltip { position: absolute; right: 0; top: calc(100% + 8px); background: var(--surface-strong); color: var(--fg); border: 1px solid rgba(var(--border-rgb),.35); border-radius: 10px; box-shadow: 0 10px 28px rgba(0,0,0,.25); padding: 10px 12px; width: min(560px, 92vw); z-index: 40; display: none; }
.ins-tooltip.open { display: block; }
.ins-tooltip code { background: rgba(var(--border-rgb),.18); padding: 0 4px; border-radius: 4px; }
.picker { position: relative; margin-top: 6px; background: var(--surface-strong); border: 1px solid rgba(var(--border-rgb),.25); border-radius: 10px; padding: 8px; display: grid; gap: 6px; max-height: 260px; overflow: auto; box-shadow: 0 10px 30px rgba(0,0,0,.2); z-index: 20; }
.pick-item { padding: 6px 8px; border-radius: 8px; cursor: pointer; border: 1px solid rgba(var(--border-rgb),.25); background: var(--surface); }
.pick-item:hover { background: rgba(var(--ac2-rgb),.15); border-color: rgba(var(--ac2-rgb),.45); }
.picker[hidden] { display: none !important; }
.picker-wrap { overflow: hidden; }
.composer-slim textarea::placeholder { color: #94a3b8; }
.composer-slim textarea:focus { outline: 2px solid rgba(var(--ac2-rgb),.45); outline-offset: 2px; }
.btn:focus { outline: 2px solid rgba(var(--ac2-rgb),.45); outline-offset: 2px; }

/* Autopilot progress */
.autopilot { border: 1px solid rgba(var(--border-rgb),.3); background: var(--surface); border-radius: 10px; padding: 10px 12px; display: grid; gap: 8px; }
.autopilot[hidden] { display: none !important; }
.autopilot .row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.autopilot .stage { font-weight: 600; color: var(--fg); }
.autopilot .count { font-size: 12px; color: var(--muted); }
.autopilot .bar { position: relative; height: 6px; border-radius: 999px; overflow: hidden; background: rgba(var(--border-rgb), .2); }
.autopilot .bar .fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: linear-gradient(90deg, rgba(var(--success-rgb),.3), rgba(var(--success-rgb),.8)); border-radius: 999px; transition: width .2s ease; }
.autopilot .notes { font-size: 12px; color: var(--muted); }

/* Sidebar nav watermark for empty projects */
.sidebar nav { position: relative; }
.nav-watermark { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; text-align: center; padding: 12px; color: var(--muted); opacity: .55; pointer-events: none; font-size: 13px; line-height: 1.3; }
.nav-watermark .spark { width: 14px; height: 14px; margin-right: 6px; vertical-align: -2px; }
.nav-watermark.hidden { display: none; }
/* Visible sparkles on dark background */
:root[data-theme="dark"] .nav-watermark .spark { filter: invert(1) brightness(1.1); }

/* Inline error box */
.ins-error { margin-top: 10px; padding: 10px 12px; border-radius: 10px; border: 1px solid rgba(var(--danger-rgb), .5); background: rgba(var(--danger-rgb), .12); color: var(--danger-text); display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px; }
.ins-error .actions { display: inline-flex; gap: 8px; }

/* Inline formatting toolbox */
.inline-toolbar { position: fixed; z-index: 70; left: 0; top: 0; transform: translate(-50%, -120%); background: var(--surface-strong); color: var(--fg); border: 1px solid rgba(var(--border-rgb), .35); border-radius: 10px; box-shadow: 0 10px 28px rgba(0,0,0,.25); padding: 6px; display: inline-flex; align-items: center; gap: 6px; }
.inline-toolbar[hidden] { display: none !important; }
.inline-toolbar .it-btn { min-width: 26px; height: 26px; padding: 0 6px; border-radius: 8px; border: 1px solid rgba(var(--border-rgb), .35); background: var(--surface); color: var(--fg); cursor: pointer; font-size: 12px; display: inline-flex; align-items: center; justify-content: center; }
.inline-toolbar .it-btn:hover { background: rgba(var(--ac2-rgb), .12); border-color: rgba(var(--ac2-rgb), .35); }
.inline-toolbar .sep { width: 1px; height: 20px; background: rgba(var(--border-rgb), .25); margin: 0 2px; }
.inline-toolbar .it-swatches { display: inline-flex; align-items: center; gap: 4px; padding-left: 2px; }
.inline-toolbar .it-label { font-size: 11px; color: var(--muted); margin-right: 4px; }
.inline-toolbar .it-swatch { width: 18px; height: 18px; border-radius: 50%; border: 1px solid rgba(var(--border-rgb), .35); cursor: pointer; display: inline-block; }
.inline-toolbar .it-swatch:hover { transform: translateY(-1px); }
.inline-toolbar select.it-font { height: 26px; border-radius: 8px; border: 1px solid rgba(var(--border-rgb), .35); background: var(--surface); color: var(--fg); font-size: 12px; padding: 0 6px; }

/* Dropdown color menus */
.it-menu { position: fixed; z-index: 71; background: var(--surface-strong); color: var(--fg); border: 1px solid rgba(var(--border-rgb), .35); border-radius: 10px; box-shadow: 0 10px 28px rgba(0,0,0,.25); padding: 8px; display: grid; gap: 8px; min-width: 180px; }
.it-menu[hidden] { display: none !important; }
.it-menu .grid { display: grid; grid-template-columns: repeat(7, 20px); gap: 6px; }
.it-menu .sw { width: 20px; height: 20px; border-radius: 50%; border: 1px solid rgba(var(--border-rgb), .35); cursor: pointer; }
.it-menu .sw:hover { transform: translateY(-1px); }
.it-menu .hdr { font-size: 12px; color: var(--muted); margin-bottom: 2px; }
.it-menu .row { display: grid; gap: 4px; }
.it-menu .row .label { font-size: 11px; color: var(--muted); }

/* Selected resource tiles */
#ins-selected .card { position: relative; }
#ins-selected .card .title { display: flex; justify-content: space-between; align-items: center; }
#ins-selected .card .remove { border: 1px solid rgba(239,68,68,.5); background: rgba(239,68,68,.15); border-radius: 8px; font-size: 12px; padding: 2px 6px; cursor: pointer; }
#ins-selected .card .remove:hover { background: rgba(239,68,68,.25); }

/* Slightly nicer look for overlay chat messages if used */
.ai-builder .messages .msg { border: 1px solid rgba(148,163,184,.2); }
.ai-builder .messages .user { background: rgba(59,130,246,.12); }
.ai-builder .messages .assistant { background: rgba(16,185,129,.12); }
.ai-builder .messages .error { background: rgba(var(--danger-rgb), .12); border: 1px solid rgba(var(--danger-rgb), .45); color: var(--danger-text); }

/* Overlay panels */
#key-overlay .overlay-panel, #ai-overlay .overlay-panel, #print-overlay .overlay-panel, #confirm-overlay .overlay-panel, #projects-overlay .overlay-panel, #unsaved-overlay .overlay-panel, #save-overlay .overlay-panel {
  background: var(--surface);
  border: 1px solid rgba(var(--border-rgb),.25);
  border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,.12);
  width: min(980px, 96vw);
  color: var(--fg);
}

/* Share flow animations inside confirm modal */
#confirm-overlay .share-result { display: none; align-items: center; gap: 8px; margin-top: 10px; }
#confirm-overlay .share-result.in { display: flex; opacity: 1; transform: translateY(0); transition: opacity .2s ease, transform .2s ease; }
#confirm-overlay .share-result .url { flex: 1; font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; border: 1px dashed rgba(var(--border-rgb),.35); padding: 6px 8px; border-radius: 8px; background: rgba(var(--panel-rgb), .35); }
#confirm-overlay .share-result .copy { padding: 6px 10px; border-radius: 8px; border: 1px solid rgba(var(--ac2-rgb), .45); background: rgba(var(--ac2-rgb), .18); color: var(--ac2-text); cursor: pointer; font-size: 12px; }
#confirm-overlay .share-result .copy:hover { background: rgba(var(--ac2-rgb), .28); }
#confirm-overlay .btn.fade-out { opacity: 0; transform: scale(.96); transition: opacity .18s ease, transform .18s ease; }

/* Global theme toggle button (top-right) */
.theme-toggle {
  position: fixed; right: 14px; top: 14px; width: 36px; height: 36px;
  border-radius: 50%; border: 1px solid rgba(var(--ac2-rgb),.45);
  background: rgba(var(--ac2-rgb),.14); color: var(--ac2-text);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  opacity: .15; transition: background .2s ease, color .2s ease, opacity .15s ease;
  z-index: 20;
}
.theme-toggle:hover { background: rgba(var(--ac2-rgb),.28); color: var(--ac2-text); opacity: 1; }
.theme-toggle:focus { outline: 2px solid var(--accent-2); outline-offset: 2px; opacity: 1; }
#print-start-browser, #pdf-start, #scn-save, #scn-reset {
  padding: 8px 12px; border-radius: 10px; font-weight: 600; font-size: 13px;
  border: 1px solid rgba(148,163,184,.35);
}
#print-start-browser { border-color: rgba(var(--ac2-rgb),.6); background: rgba(var(--ac2-rgb),.18); color: var(--ac2-text); }
#print-start-browser:hover { background: rgba(var(--ac2-rgb),.28); color: #e5f2ff; }
#pdf-start { border-color: rgba(var(--border-rgb),.45); background: rgba(var(--border-rgb),.14); color: var(--fg); }
#pdf-start:hover { background: rgba(var(--border-rgb),.22); color: var(--fg); }
#scn-save { border-color: rgba(var(--success-rgb),.65); background: rgba(var(--success-rgb),.18); color: var(--success-text); }
#scn-save:hover { background: rgba(var(--success-rgb),.28); color: var(--success-text); }
#scn-reset { border-color: rgba(var(--danger-rgb),.6); background: rgba(var(--danger-rgb),.18); color: var(--danger-text); }
#scn-reset:hover { background: rgba(var(--danger-rgb),.28); color: var(--danger-text); }
#scn-name, #scn-list {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(var(--border-rgb),.35);
  background: var(--surface);
  color: var(--fg);
  font: inherit;
}
#scn-name:focus, #scn-list:focus { outline: 2px solid rgba(var(--ac2-rgb),.45); outline-offset: 2px; }
#scn-list {
  appearance: none; -webkit-appearance: none; -moz-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239aa9bf' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat; background-position: right 10px center; background-size: 12px;
  padding-right: 28px;
}
#key-overlay .overlay-panel { width: min(560px, 92vw); }
#print-overlay .overlay-panel { width: min(560px, 92vw); }
#confirm-overlay .overlay-panel { width: min(480px, 92vw); }

/* Sidebar inline insert/delete on nav items */
.nav-item { position: relative; display: grid; grid-template-columns: 1fr auto; align-items: center; }
.nav-item .nav-link { grid-column: 1 / 2; }
.nav-item .nav-actions { grid-column: 2 / 3; display: none; gap: 6px; align-items: center; }
.nav-item:hover .nav-actions { display: inline-flex; }
.nav-action { width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; border: 1px solid rgba(148,163,184,.35); font-weight: 700; font-size: 14px; }
.nav-insert { border-color: rgba(var(--success-rgb),.6); background: rgba(var(--success-rgb),.15); color: var(--success-text); }
.nav-insert:hover { background: rgba(var(--success-rgb),.25); color: var(--success-text); }
.nav-delete { border-color: rgba(var(--danger-rgb),.55); background: rgba(var(--danger-rgb),.15); color: var(--danger-text); }
.nav-delete:hover { background: rgba(var(--danger-rgb),.25); color: var(--danger-text); }
.nav-line { position: absolute; left: 0; right: 0; height: 0; border-top: 1px dashed rgba(148,163,184,.35); opacity: 0; transition: opacity .15s ease; }
.nav-item:hover .nav-line { opacity: 1; }
.nav-line.before { top: -3px; }
.nav-line.after { bottom: -3px; }

/* Print/export styles */
@page { size: A4 landscape; margin: 0; }
@media print {
  /* Preserve theme colors and backgrounds in print */
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  body { color: var(--fg); background: linear-gradient(180deg, #0b1020, #0c1022 40%, #0b0f1c 100%) !important; }
  .sidebar, #details-overlay, #ai-overlay, #key-overlay, #print-overlay, #confirm-overlay, .details-btn, .print-btn { display: none !important; }
  .snap-container { margin-left: 0; height: auto; overflow: visible; }
  .snap-section { scroll-snap-align: initial; min-height: auto; page-break-inside: avoid; break-inside: avoid-page; }
  .print-page { page-break-after: always; break-after: page; overflow: hidden; display:block; width: 297mm; height: 210mm; }
  .wrap { width: auto; padding: 12mm 14mm; }
  /* Ensure animated elements are visible when printing */
  [data-animate] { opacity: 1 !important; transform: none !important; }
  /* Expand horizontally scrollable matrices for full capture */
  details.expander.feature-matrix .content { overflow: visible !important; }
  .snap-section[data-section="main"], .snap-section[data-section="detail"] { page-break-after: always; }
  img.print-canvas, canvas { page-break-inside: avoid; break-inside: avoid-page; display: block; }
  /* Keep original backgrounds; just soften borders for print contrast */
  .diagram, .statcard, .table th { border-color: rgba(148,163,184,.35) !important; }
  .table th { background: rgba(2,6,23,.12) !important; color: var(--fg) !important; }
  .caption, .footnote { color: var(--muted) !important; }
  .snap-section[data-section="detail"] { display: block !important; }
  /* Improve diagram contrast on paper */
  .diagram .node { fill: rgba(96,165,250,0.3) !important; stroke: rgba(96,165,250,0.9) !important; }
  .diagram .edge { stroke: rgba(34,197,94,0.95) !important; stroke-width: 2.5 !important; }
  .diagram text { fill: #0b1020 !important; stroke: #ffffff !important; stroke-width: 0px !important; }
}

/* Screen helper when preparing print */
body.print-mode .sidebar, body.print-mode #details-overlay, body.print-mode .details-btn, body.print-mode .print-btn { display: none; }
body.print-mode .snap-container { margin-left: 0; height: auto; overflow: visible; }
body.print-mode .snap-section[data-section="detail"] { display: block; }
/* Print sequence container */
#print-sequence { display: none; }
body.print-mode #content { display: none; }
body.print-mode #print-sequence { display: block; }
/* Avoid splits for common blocks when printing */
@media print {
  details.expander, .expanders, .table, .statcards, .cards, .chart-row, .grid.two { page-break-inside: avoid; break-inside: avoid-page; }
}

/* Export mode (custom PDF capture) */
body.export-mode .sidebar,
body.export-mode #details-overlay,
body.export-mode #ai-overlay,
body.export-mode #key-overlay,
body.export-mode #print-overlay,
body.export-mode #confirm-overlay { display: none !important; }
body.export-mode .snap-container { margin-left: 0; }

/* Presentation mode */
body.present-mode .sidebar,
body.present-mode #ai-overlay,
body.present-mode #key-overlay,
body.present-mode #print-overlay,
body.present-mode #confirm-overlay,
body.present-mode #projects-overlay,
body.present-mode #unsaved-overlay,
body.present-mode #save-overlay,
body.present-mode .section-edit,
body.present-mode .print-btn,
body.present-mode .nav-tools,
body.present-mode .theme-toggle { display: none !important; }
body.present-mode .snap-container { margin-left: 0; }
/* Hide scrollbars in present mode */
body.present-mode .snap-container { scrollbar-width: none; }
body.present-mode .snap-container::-webkit-scrollbar { width: 0; height: 0; }
/* Ensure fullscreen hides sidebar even if class not applied */
:fullscreen .sidebar { display: none !important; }
:fullscreen .snap-container { margin-left: 0 !important; }
:fullscreen .theme-toggle, :fullscreen .nav-tools, :fullscreen .section-edit { display: none !important; }
/* Ensure themed background when capturing nodes for custom PDF */
body.export-mode .snap-section { background: linear-gradient(180deg, #0b1020, #0c1022 40%, #0b0f1c) !important; background-color: #0b1020 !important; color: var(--fg) !important; }
/* Ensure animated items are visible during export */
body.export-mode [data-animate] { opacity: 1 !important; transform: none !important; }
/* Expand horizontally scrollable content during export */
body.export-mode details.expander.feature-matrix .content { overflow: visible !important; }

/* Drawing overlay (Excalidraw) */
.draw-overlay { position: absolute; inset: 0; z-index: 5; pointer-events: none; opacity: 0; transition: opacity .2s ease; overflow: visible; }
.draw-overlay.ready { opacity: 1; }
.draw-overlay .excalidraw { height: 100% !important; width: 100% !important; background: transparent !important; }
/* Hide Excalidraw UI chrome in read-only mode */
.draw-overlay.readonly .layer-ui__wrapper,
.draw-overlay.readonly .App-toolbar,
.draw-overlay.readonly .Stack__stack,
.draw-overlay.readonly .FixedSideContainer,
.draw-overlay.readonly .mobile-misc-tools-container {
  display: none !important;
}
.draw-overlay.editing { pointer-events: auto; }
.draw-overlay.editing .layer-ui__wrapper { display: block !important; }
/* Hide Excalidraw main menu trigger (hamburger) */
.draw-overlay .dropdown-menu-button.main-menu-trigger { display: none !important; }
/* Ensure live preview has minimum 16:9 area when empty */
/* Only expand editor live area while drawing is open */
.insert-editor #ins-live.draw-open { min-height: 608px; }
.insert-editor #ins-live.draw-has-content { min-height: 608px; }
@media (max-width: 1080px){ .insert-editor #ins-live.draw-open { min-height: calc(56.25vw); } }
@media (max-width: 1080px){ .insert-editor #ins-live.draw-has-content { min-height: calc(56.25vw); } }

/* Ensure saved drawings are visible on slides and in previews */
.snap-section .wrap.has-draw { min-height: 608px; }
@media (max-width: 1080px){ .snap-section .wrap.has-draw { min-height: calc(56.25vw); } }

/* Generic thumbnail scaffolding */
.thumb { position: relative; }
.thumb .thumb-inner { position: absolute; top: 0; left: 0; transform-origin: top left; }
.thumb .thumb-inner img { display: block; }

/* Not Found view */
.snap-section.not-found { align-items: center; }
.not-found .wrap { min-height: auto; }
.not-found .nf-card { margin: 0 auto; text-align: center; background: var(--surface); border: 1px solid rgba(var(--border-rgb), .25); border-radius: 14px; padding: 24px 20px; max-width: 720px; box-shadow: 0 10px 24px rgba(0,0,0,.25); }
.not-found .glyph { font-size: 56px; line-height: 1; margin-bottom: 8px; filter: saturate(1.1) drop-shadow(0 2px 6px rgba(0,0,0,.25)); }
.not-found h2 { margin: 6px 0; }
.not-found .lede { margin: 6px auto 2px; max-width: 70ch; }
.not-found .caption { margin-top: 0; }
.not-found .actions { margin-top: 12px; display: flex; justify-content: center; }
/* Hide edit/draw controls in Not Found */
.not-found .section-edit { display: none !important; }
/* Draw button styling (icon-like) */
.btn.draw-toggle { display: inline-flex; align-items: center; gap: 6px; }
.btn.draw-toggle .ico { width: 16px; height: 16px; }

/* Authentication modal styles */
.auth-modal { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; background: rgba(0,0,0,0.45); z-index: 9999; backdrop-filter: blur(8px); }
.auth-modal.visible { display: flex; }
.auth-modal-content { width: min(520px, 92vw); background: var(--surface-strong); color: var(--fg); border: 1px solid rgba(var(--border-rgb),0.35); border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.4); transform: translateY(12px); opacity: 0; transition: opacity .2s ease, transform .2s ease; padding: 20px; }
.auth-modal.visible .auth-modal-content { opacity: 1; transform: translateY(0); }
.auth-modal-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.auth-modal-header h2 { margin: 0; font-weight: 700; color: var(--heading); }
.auth-logo img { display: block; height: 32px; width: auto; }
.auth-modal-body { padding: 8px 0 12px; }
.auth-message { margin: 0 0 12px 0; color: var(--muted); }
.auth-buttons { display: flex; gap: 8px; }
.auth-buttons .btn { padding: 8px 12px; border-radius: 8px; border: 1px solid rgba(var(--border-rgb),0.35); cursor: pointer; }
.auth-buttons .btn.btn-primary { background: rgba(var(--ac2-rgb), .18); color: var(--ac2-text); border-color: rgba(var(--ac2-rgb), .45); }
.auth-buttons .btn.btn-primary:hover { background: rgba(var(--ac2-rgb), .28); }
.auth-buttons .btn.ghost { background: transparent; color: var(--fg); }
.auth-buttons .btn.ghost:hover { background: rgba(var(--ac2-rgb), .12); }
.auth-modal-footer { font-size: 12px; color: #94a3b8; margin-top: 8px; }
.auth-subtle { font-size: 12px; color: var(--muted); margin-top: 8px; }
.auth-subtle a { color: var(--ac2-text); text-decoration: underline; }

/* Lock and blur app content when auth modal is visible */
body.auth-locked .sidebar,
body.auth-locked #content {
  filter: blur(6px) brightness(0.6);
  pointer-events: none;
  user-select: none;
}
/* Read-only mode: hide edit affordances and disable mutating controls */
body.readonly-project .section-edit { display: none !important; }
body.readonly-project .nav-insert-area .ins-btn,
body.readonly-project .nav-delete,
body.readonly-project .nav-duplicate { opacity: .5; pointer-events: none; filter: grayscale(0.2); }