/* --- 01-base.css --- */
/* tokens + page shell */
/* Drawer shell styles — source for assets/vendor/drawer-app.css */
:root, [data-theme="dark"] {
  --bg: #1c1c1e;
  --canvas: #252528;
  --panel: rgba(36,36,38,.92);
  --panel-solid: #2c2c2e;
  --stroke: rgba(255,255,255,.08);
  --stroke-strong: rgba(255,255,255,.14);
  --text: #f5f5f7;
  --muted: #a1a1a6;
  --faint: #6e6e73;
  --accent: #0a84ff;
  --accent-soft: rgba(10,132,255,.16);
  --ok: #30d158;
  --warn: #ffd60a;
  --danger: #ff453a;
  --shadow: 0 12px 40px rgba(0,0,0,.45);
  --shadow-soft: 0 4px 16px rgba(0,0,0,.28);
  --radius: 14px;
  --font: "SF Pro Display", "SF Pro Text", Inter, system-ui, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, monospace;
  --dot: rgba(255,255,255,.07);
}
[data-theme="light"] {
  --bg: #e8e8ed;
  --canvas: #f5f5f7;
  --panel: rgba(255,255,255,.86);
  --panel-solid: #ffffff;
  --stroke: rgba(0,0,0,.08);
  --stroke-strong: rgba(0,0,0,.12);
  --text: #1d1d1f;
  --muted: #6e6e73;
  --faint: #8e8e93;
  --accent: #0071e3;
  --accent-soft: rgba(0,113,227,.12);
  --ok: #248a3d;
  --warn: #b25000;
  --danger: #d70015;
  --shadow: 0 16px 40px rgba(0,0,0,.12);
  --shadow-soft: 0 4px 14px rgba(0,0,0,.08);
  --dot: rgba(0,0,0,.06);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 var(--font);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; }
.app {
  position: relative;
  height: 100%;
  width: 100%;
  display: grid;
  grid-template-columns: var(--side, 360px) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  overflow: hidden;
}


/* --- 02-chrome.css --- */
/* sheet / canvas chrome / floats / menus */
/* —— Source sheet —— */
.sheet {
  position: relative;
  z-index: 60;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--panel-solid);
  border-right: 1px solid var(--stroke);
  box-shadow: var(--shadow-soft);
}
.sheet-top {
  padding: 18px 18px 10px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.sheet-top h1 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.02em;
}
.sheet-top p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.pillrow {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 0 18px 12px;
}
.pill {
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: transparent;
  color: var(--muted);
  font-size: 11.5px;
  display: inline-flex; align-items: center; gap: 5px;
}
.pill b { color: var(--text); font-weight: 600; }
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 30%, var(--stroke)); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, var(--stroke)); }

.editor-wrap {
  flex: 1;
  min-height: 0;
  margin: 0 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: color-mix(in srgb, var(--canvas) 70%, var(--panel-solid));
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.sheet-actions {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 0 18px 18px;
}
.btn {
  height: 32px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: transparent;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s, border-color .15s, transform .08s;
}
.btn[hidden] { display: none !important; }
.btn:hover { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 35%, var(--stroke)); }
.btn:active { transform: scale(.98); }
.btn.primary {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
  font-weight: 560;
}
.btn.primary:hover { filter: brightness(1.06); background: var(--accent); }
.btn.ghost { color: var(--muted); }
.btn[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--stroke));
}
.resize {
  position: absolute; top: 0; right: -3px; width: 6px; height: 100%;
  cursor: col-resize; z-index: 3;
}

/* —— Canvas —— */
.canvas-shell {
  position: relative;
  min-width: 0;
  min-height: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--canvas);
  background-image: radial-gradient(var(--dot) 1px, transparent 1px);
  background-size: 20px 20px;
}
#preview-stage {
  position: absolute; inset: 0;
  overflow: hidden;
  cursor: grab;
}
/* Board title is the browser document.title. Do not paint it on the canvas. */
/* Refresh: hide the canvas until layout + transform finish.
   Do not hide .top-float — that makes the whole toolbar pop in. */
html[data-drawer-boot="1"] #preview-stage {
  opacity: 0 !important;
}
.board-render > .board-html-header,
.board-render > .board-title-node {
  display: none !important;
}
html[data-drawer-mode="board"] #preview {
  padding-top: 8px;
}
#preview-stage.panning { cursor: grabbing; }
#preview-stage.panning,
#preview-stage.panning * {
  user-select: none !important;
  -webkit-user-select: none !important;
}
/* Diagram canvas is not a text surface — panning/dragging must not select item labels */
html[data-drawer-mode="board"] #preview,
html[data-drawer-mode="board"] #preview * {
  user-select: none;
  -webkit-user-select: none;
}
html[data-drawer-mode="board"] .board-dock input,
html[data-drawer-mode="board"] .board-dock textarea,
html[data-drawer-mode="board"] .sheet textarea,
html[data-drawer-mode="board"] .sheet input {
  user-select: text;
  -webkit-user-select: text;
}
#preview {
  transform-origin: 0 0;
  width: max-content;
  min-width: 0;
  min-height: 0;
  padding: 8px;
  display: block;
}
#preview svg {
  max-width: none;
  width: auto !important;
  height: auto !important;
  display: block;
  /* Same surface as Board: diagram floats on the grid, no white plate. */
  filter: none;
  background: transparent;
  border-radius: 0;
  padding: 0;
  border: 0;
}

.empty {
  margin: 18vh auto 0;
  width: min(320px, 80%);
  text-align: center;
  color: var(--faint);
  padding: 28px 20px;
  border-radius: 16px;
  border: 1px dashed var(--stroke-strong);
  background: color-mix(in srgb, var(--panel) 50%, transparent);
  backdrop-filter: blur(10px);
}
.empty h2 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: -.02em;
}
.empty p { margin: 0; font-size: 12.5px; line-height: 1.5; }
kbd {
  font: 11px var(--mono);
  border: 1px solid var(--stroke-strong);
  border-radius: 6px;
  padding: 1px 6px;
  color: var(--muted);
}

/* floating chrome — auto-hide to maximize canvas in tight IDE panes */
.float {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: var(--panel);
  backdrop-filter: blur(14px) saturate(1.15);
  box-shadow: var(--shadow-soft);
  transition: opacity .16s ease, transform .16s ease;
}
.float .btn {
  height: 26px;
  min-width: 26px;
  padding: 0 8px;
  border-radius: 7px;
  border: 0;
  background: transparent;
  font-size: 12px;
}
.float .btn:hover { background: var(--accent-soft); }
.float .sep {
  width: 1px; height: 14px; background: var(--stroke); margin: 0 2px;
}

/* Source chip chrome */
/* Source toggle chrome */
.top-float {
  top: 16px;
  left: 12px;
  right: auto;
  transform: none;
  opacity: 1;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}
.top-float:hover,
.top-float:focus-within,
.canvas-shell.show-chrome .top-float,
.canvas-shell.chrome-tr .top-float,
.top-float:has(.menu.open) {
  opacity: 1;
}
.top-float .btn-source {
  box-sizing: border-box;
  width: 2.25rem;          /* --lg-button-size menu */
  height: 2.25rem;
  min-width: 2.25rem;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 0.5rem;   /* --border-radius-lg */
  background: #ececf4;     /* --color-surface-mid (light) */
  color: #1b1b1f;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: none;
  font: inherit;
}
.top-float .btn-source:hover {
  background: #f1f0ff;     /* --color-surface-high */
  border-color: transparent;
}
.top-float .btn-source:active {
  background: #e0dfff;
}
[data-theme="dark"] .top-float .btn-source {
  background: #363541;
  color: #e3e3e8;
}
[data-theme="dark"] .top-float .btn-source:hover {
  background: #403e4a;
}
.top-float .btn-source .icon-source {
  display: block;
}
html[data-drawer-mode="board"] .top-float {
  /* Vertically align with the adjacent toolbar */
  top: 16px;
  left: 12px;
  right: auto;
  /* Do not inherit .float opacity/transform animation (toolbar flash on refresh) */
  transition: none !important;
}


/* Source lives in top-right with ⋯ — hide legacy top-left chip */
.collapse-hint { display: none !important; }

.zoom-float {
  right: 8px; bottom: 8px;
  opacity: 0;
  pointer-events: none; /* never steal diagram clicks while hidden */
  transform: translateY(4px);
}
.canvas-shell.chrome-br .zoom-float,
.canvas-shell.show-chrome .zoom-float,
.zoom-float:focus-within {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.copy-tip {
  position: fixed;
  left: 50%;
  top: auto;
  bottom: 16px;
  transform: translateX(-50%);
  z-index: 200;
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: var(--panel-solid);
  color: var(--text);
  font: 12.5px var(--sans);
  font-weight: 650;
  box-shadow: var(--shadow-soft);
  pointer-events: none;
}
.copy-tip[hidden] { display: none !important; }


.collapse-hint {
  position: absolute;
  top: 8px; left: 8px; z-index: 5;
  display: none;
  opacity: .5;
  padding: 2px;
}
.collapse-hint .btn {
  height: 22px;
  min-width: 0;
  padding: 0 8px;
  font-size: 11px;
  line-height: 22px;
  border-radius: 6px;
}
.collapse-hint:hover,
.canvas-shell.chrome-tl .collapse-hint,
.canvas-shell.show-chrome .collapse-hint {
  opacity: 1;
}
.app.sheet-collapsed {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
}
.app.sheet-collapsed .sheet {
  display: none !important;
}
.app.sheet-collapsed .collapse-hint { display: flex; }
.app.sheet-collapsed .canvas-shell {
  grid-column: 1;
  grid-row: 1;
  width: 100%;
  min-width: 0;
}

@media (max-width: 820px) {
  .app {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(180px, 38%) minmax(0, 1fr);
  }
  .sheet { border-right: 0; border-bottom: 1px solid var(--stroke); }
  .resize { display: none; }
  .top-float { top: 6px; left: 6px; right: auto; }
  .app.sheet-collapsed {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
  }
}

.menu { position: relative; }
.top-float .menu-panel { right: 0; left: auto; }
.sheet-actions .sheet-menu { position: relative; margin-left: auto; }
.sheet-actions .btn-more {
  min-width: 32px;
  padding: 0 8px;
  font-size: 16px;
  line-height: 1;
  letter-spacing: 0;
}
.sheet-actions .menu-panel {
  right: 0;
  left: auto;
  bottom: calc(100% + 6px);
  top: auto;
}

.menu-panel {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 168px;
  padding: 6px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(1.2);
  box-shadow: var(--shadow);
  z-index: 6;
}
.menu.open .menu-panel { display: block; }
.menu-item {
  width: 100%;
  height: 32px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
.menu-item:hover { background: var(--accent-soft); }
.menu-item span { color: var(--faint); font-size: 11px; }
.menu-item[hidden] { display: none !important; }


.board-editor-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  margin: 0 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: color-mix(in srgb, var(--canvas) 70%, var(--panel-solid));
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
#boardSource {
  flex: 1;
  width: 100%;
  min-height: 0;
  border: 0;
  resize: none;
  outline: none;
  padding: 14px;
  background: transparent;
  color: var(--text);
  font: 12.5px/1.55 var(--mono);
  tab-size: 2;
}
#boardError {
  display: none;
  margin: 0;
  padding: 10px 12px;
  border-top: 1px solid color-mix(in srgb, var(--danger) 35%, var(--stroke));
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  color: var(--danger);
  font: 11.5px/1.45 var(--mono);
  white-space: pre-wrap;
}
#boardError.show { display: block; }
.board-inspector { display: flex; align-items: center; gap: 7px; margin: 0 12px 10px; padding: 8px 9px; border: 1px solid var(--stroke); border-radius: 10px; background: color-mix(in srgb, var(--canvas) 70%, var(--panel-solid)); }
.board-inspector[hidden] { display: none; }
.board-inspector-label { flex: 0 0 auto; color: var(--muted); font-size: 11px; }
#boardTitleEditor { min-width: 0; flex: 1; border: 1px solid var(--stroke); border-radius: 6px; padding: 5px 7px; background: var(--panel-solid); color: var(--text); font: 12px var(--sans); outline: none; }
#boardTitleEditor:focus { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 22%, transparent); }

/* --- 03-diagram.css --- */
/* board diagram surfaces */
.board-selection { outline: 3px solid #f59e0b !important; outline-offset: 3px; }
.board-selection-tree { outline: 3px dashed #f59e0b !important; outline-offset: 3px; }
.board-reorder-dragging { opacity: 0.45; cursor: grabbing !important; }
.board-reorder-caret {
  position: absolute;
  z-index: 6;
  pointer-events: none;
  background: var(--accent, #0071e3);
  border-radius: 1px;
}

/* Container = grouping shell: transparent fill + dashed border (theme color). */
.board-render .box.board-type-container,
.board-render .board-zone.board-type-container,
.board-render .board-container {
  background: transparent !important;
  background-color: transparent !important;
  border: 1.5px dashed var(--board-container-zone-border, var(--board-zone-border, #888888)) !important;
  border-radius: 8px;
  box-shadow: none !important;
  outline: none;
  /* Inset lives on .box-content via applyFlex; do not double-pad the shell. */
  padding: 0 !important;
  box-sizing: border-box !important;
  pointer-events: auto !important;
}
/* Layout = pure arrangement: no fill, no border. Hit ring is .board-layout-halo. */
.board-render .box.board-type-layout,
.board-render .board-zone.board-type-layout,
.board-render .board-layout {
  background: transparent !important;
  background-color: transparent !important;
  border: 0 !important;
  border-radius: 0;
  box-shadow: none !important;
  outline: none;
  padding: 0 !important;
  box-sizing: border-box !important;
  pointer-events: auto !important;
  overflow: visible !important;
}
.board-render .board-layout-halo {
  position: absolute;
  inset: -8px;
  z-index: 0;
  pointer-events: auto;
  background: rgba(0, 0, 0, 0.001);
}
.board-render .board-type-layout > .box-content {
  position: relative;
  z-index: 1;
}
.board-render .box.board-type-layout:hover:not(:has(> .box-content:hover)):not(.board-selection),
.board-render .board-zone.board-type-layout:hover:not(:has(> .box-content:hover)):not(.board-selection) {
  outline: 1px dashed rgba(245, 158, 11, 0.55);
  outline-offset: 3px;
}
.board-render .box.board-type-container > .box-content,
.board-render .board-zone.board-type-container > .box-content,
.board-render .board-container > .box-content {
  pointer-events: auto;
}
.board-render .box.board-type-container.board-selection,
.board-render .board-zone.board-type-container.board-selection {
  /* Amber selection outline; keep dashed group border visible underneath. */
  outline: 3px solid #f59e0b !important;
  outline-offset: 3px;
  background: transparent !important;
}
.board-render .box.board-type-layout.board-selection,
.board-render .board-zone.board-type-layout.board-selection {
  outline: 3px solid #f59e0b !important;
  outline-offset: 3px;
  border-color: transparent !important;
  background: transparent !important;
}
.board-render .box.board-type-container > .box-title,
.board-render .board-type-container > .board-zone-title,
.board-render .board-type-container > .box-title.board-zone-title {
  opacity: 0.72;
  font-weight: 600;
  background: transparent !important;
  /* Match container content inset (28/30 = rect zone 12/14 + content 16). */
  padding: 16px 30px 0 !important;
  border-radius: 0 !important;
  min-height: 0;
  margin: 0 !important;
}
/* No colored header strip when title is cleared (empty label, optional glyph-only still ok). */
.board-render .board-type-container > .box-title:not(:has(.board-zone-glyph)):has(.board-title-name:empty),
.board-render .board-type-container > .board-zone-title:not(:has(.board-zone-glyph)):has(.board-title-name:empty) {
  display: none !important;
  margin: 0 !important;
}
.board-render .board-type-layout > .box-title,
.board-render .board-type-layout > .board-zone-title {
  display: none !important;
}
/* Keep container/layout transparent even when they hold items (do not inherit panel fill). */
.board-render .board-type-container:has(> .box-content > .board-item),
.board-render .board-zone.board-type-container:has(> .box-content > .board-item),
.board-render .box.board-type-container:has(> .box-content > .board-item),
.board-render .board-type-layout:has(> .box-content > .board-item),
.board-render .board-zone.board-type-layout:has(> .box-content > .board-item),
.board-render .box.board-type-layout:has(> .box-content > .board-item) {
  background: transparent !important;
  background-color: transparent !important;
}

.board-render .box.board-nested { position: relative !important; left: auto !important; top: auto !important; }
.board-edit-tools { display: none; align-items: center; gap: 8px; transition: none !important; }
html[data-drawer-mode="board"] .board-edit-tools { display: inline-flex; }
.board-brand {
  display: none;
  align-items: center;
  height: 32px;
  padding-right: 10px;
  margin-right: 2px;
  border-right: 1px solid var(--stroke);
  pointer-events: none !important;
  user-select: none;
}
html[data-drawer-mode="board"] .board-brand { display: inline-flex; }
.board-brand-mark {
  width: 28px;
  height: 28px;
  display: block;
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}
.board-edit-tool { transition: none !important; }
.export-type-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  background: color-mix(in srgb, var(--canvas) 40%, var(--panel-solid));
}
.export-type-label {
  font: 11px var(--sans);
  color: var(--muted, #64748b);
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.export-type-value,
#typePill {
  font: 13px var(--sans);
  color: var(--text);
  font-weight: 650;
}
.export-type-value b,
#typePill b { font-weight: 700; }
.export-type-hint {
  margin: -2px 0 0;
  font: 11px var(--sans);
  color: var(--muted, #64748b);
  line-height: 1.4;
}
.export-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}
.export-actions .btn { justify-content: center; width: 100%; height: 34px; border-radius: 8px; }
/* Style sidebar — clear section rhythm (Theme / Layout) */
#stylePanel.style-panel,
#stylePanel {
  gap: 0;
}
#stylePanel > .props-head {
  margin-bottom: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--stroke);
}
.style-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 0 4px;
}
/* display:flex would otherwise override the hidden attribute */
.style-block[hidden] {
  display: none !important;
}
.style-block + .style-block {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--stroke);
}
.style-section-label {
  margin: 0;
  font: 11px var(--sans);
  color: var(--muted, #64748b);
  font-weight: 650;
  letter-spacing: .04em;
}
.style-theme-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.style-theme-list .style-theme-btn {
  justify-content: center;
  width: 100%;
  min-height: 36px;
  text-align: center;
  border-radius: 10px;
}
.style-theme-list .style-theme-btn.is-active {
  border-color: var(--accent, #2563eb);
  background: color-mix(in srgb, var(--accent, #2563eb) 12%, var(--panel-solid));
  color: var(--accent, #2563eb);
  font-weight: 650;
}
#stylePanel .props-seg {
  gap: 8px;
}
#stylePanel .props-seg-btn {
  height: 36px;
  border-radius: 10px;
}
#boardLayoutSection .props-route-seg {
  display: flex;
  grid-template-columns: unset;
  align-items: stretch;
  gap: 0;
  padding: 3px;
  border: 0;
  border-radius: 9px;
  background: color-mix(in srgb, var(--text) 6%, var(--panel-solid));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--stroke-strong) 80%, transparent);
}
#boardLayoutSection .props-route-seg .props-seg-btn {
  flex: 1;
  min-width: 0;
  height: 26px;
  padding: 0 4px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font: 600 11px/1 var(--font);
  letter-spacing: -0.01em;
  box-shadow: none;
  transition: background .14s ease, color .14s ease, box-shadow .14s ease;
}
#boardLayoutSection .props-route-seg .props-seg-btn + .props-seg-btn {
  box-shadow: inset 1px 0 0 color-mix(in srgb, var(--stroke-strong) 85%, transparent);
}
#boardLayoutSection .props-route-seg .props-seg-btn:hover {
  background: transparent;
  color: var(--text);
}
#boardLayoutSection .props-route-seg .props-seg-btn[aria-pressed="true"] {
  background: var(--panel-solid);
  color: var(--text);
  font-weight: 650;
  box-shadow: var(--shadow-soft);
}
#boardLayoutSection .props-route-seg .props-seg-btn[aria-pressed="true"] + .props-seg-btn {
  box-shadow: none;
}
#boardLayoutSection .props-route-seg .props-seg-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  z-index: 1;
}
#boardLayoutSection .style-hint {
  font: 11px/1.45 var(--font);
  color: var(--muted);
}
.style-cap-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.style-cap-row input[type="range"] {
  flex: 1 1 auto;
  min-width: 0;
  height: 14px;
  margin: 0;
  padding: 0;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  accent-color: var(--accent, #2563eb);
  cursor: pointer;
}
.style-cap-row input[type="range"]:focus { outline: none; }
.style-cap-row input[type="range"]:focus-visible {
  outline: 2px solid var(--accent, #2563eb);
  outline-offset: 2px;
}
.style-cap-row input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--accent, #2563eb) 0,
    var(--accent, #2563eb) var(--cap-fill, 50%),
    color-mix(in srgb, var(--text) 14%, transparent) var(--cap-fill, 50%),
    color-mix(in srgb, var(--text) 14%, transparent) 100%
  );
}
.style-cap-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  margin-top: -5px;
  border: 0;
  border-radius: 50%;
  background: var(--accent, #2563eb);
  box-shadow: none;
  transform: none;
  transition: none;
}
.style-cap-row input[type="range"]:hover::-webkit-slider-thumb,
.style-cap-row input[type="range"]:active::-webkit-slider-thumb,
.style-cap-row input[type="range"]:focus::-webkit-slider-thumb {
  width: 14px;
  height: 14px;
  transform: none;
  filter: none;
}
.style-cap-row input[type="range"]::-moz-range-track {
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text) 14%, transparent);
}
.style-cap-row input[type="range"]::-moz-range-progress {
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: var(--accent, #2563eb);
}
.style-cap-row input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: 0;
  border-radius: 50%;
  background: var(--accent, #2563eb);
  box-shadow: none;
  transform: none;
  transition: none;
}
.style-hint {
  margin: 0;
  font: 11px/1.4 var(--sans);
  color: var(--muted, #64748b);
}

.board-edit-tool-icon { padding: 0 !important; width: 32px !important; justify-content: center; }
.board-edit-tool-icon .board-edit-glyph { margin: 0; }
.board-edit-tool { height: 32px !important; min-width: 32px !important; padding: 0 10px !important; gap: 5px; border: 1px solid var(--stroke) !important; border-radius: 10px !important; background: var(--panel-solid) !important; color: var(--text); font-size: 12px; }
.board-edit-tool:hover { background: var(--accent-soft) !important; }
.board-edit-tool:disabled { opacity: .42; cursor: not-allowed; }
.board-edit-tool .board-edit-glyph { font-size: 15px; line-height: 1; }

.board-placeholder {
  flex: 1;
  margin: 0 18px 18px;
  border-radius: 16px;
  border: 1px dashed var(--stroke-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--muted);
  padding: 24px;
  background: color-mix(in srgb, var(--canvas) 40%, transparent);
}
.board-placeholder h2 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -.02em;
}
.board-placeholder p { margin: 0; font-size: 12.5px; line-height: 1.5; max-width: 280px; }

/* Board design system — restrained editorial architecture diagram. */
/* canvas grid is set below */
/* Diagram themes (Board) — CSS vars from vendor/board/themes; per box type via --board-<type>-* */
.board-render {
  color: var(--board-color, #333);
  font-family: var(--board-font, "Trebuchet MS", Verdana, Arial, sans-serif);
  letter-spacing: 0;
}
.board-render .board-zone {
  background: var(--board-zone-bg, #ececff);
  border: 1px solid var(--board-zone-border, #9370db);
  border-radius: var(--board-zone-radius, 4px);
  box-shadow: none;
  padding: var(--board-zone-pad, 12px 14px);
}
.board-render .board-zone-title {
  color: var(--board-title-color, #333);
  font-size: var(--board-title-size, 13px);
  font-weight: var(--board-title-weight, 700);
  margin: var(--board-title-margin, 0 0 8px);
}
/* No title/icon: do not reserve title-row height (empty chrome must collapse). */
.board-render .board-zone.board-no-title > .box-title,
.board-render .board-zone.board-no-title > .board-zone-title {
  display: none !important;
  margin: 0 !important;
  min-height: 0 !important;
  padding: 0 !important;
}
.board-render .board-title-only .board-zone-title {
  margin: 0;
}
.board-render .board-card {
  background: var(--board-card-bg, #fff);
  border: 1px solid var(--board-card-border, #9370db);
  border-left: var(--board-card-left, 1px solid #9370db);
  border-radius: var(--board-card-radius, 4px);
  box-shadow: none;
  font-size: var(--board-card-size, 12px);
  color: var(--board-card-color, #333);
  padding: var(--board-card-pad, 6px 10px);
}
.board-render .board-zone:has(> .box-content > .board-item) {
  background: var(--board-panel-bg, var(--board-zone-bg, #ececff));
}
.board-render .board-zone:has(> .box-content > .board-item) > .box-title,
.board-render .board-zone:has(> .box-content > .board-item) > .board-zone-title {
  background: var(--board-panel-header-bg, var(--board-zone-bg, #ececff));
  border-radius: calc(var(--board-zone-radius, 4px) - 1px);
  padding: 6px 8px;
}
.board-render .board-diamond .board-zone-title { color: var(--board-title-color, #333); }

/* Per-type overrides (theme.types.<type>) */
.board-render .board-type-card {
  background: var(--board-card-zone-bg, var(--board-zone-bg));
  border-color: var(--board-card-zone-border, var(--board-zone-border));
  border-radius: var(--board-card-zone-radius, var(--board-zone-radius));
  padding: var(--board-card-zone-pad, var(--board-zone-pad));
}
.board-render .board-type-card > .box-title,
.board-render .board-type-card > .board-zone-title {
  color: var(--board-card-title-color, var(--board-title-color));
  font-size: var(--board-card-title-size, var(--board-title-size));
  font-weight: var(--board-card-title-weight, var(--board-title-weight));
  margin: var(--board-card-title-margin, var(--board-title-margin));
}
.board-render .board-title-only.board-type-card > .box-title,
.board-render .board-title-only.board-type-card > .board-zone-title {
  margin: 0;
}
.board-render .board-type-card .board-card {
  background: var(--board-card-card-bg, var(--board-card-bg));
  border-color: var(--board-card-card-border, var(--board-card-border));
  border-left: var(--board-card-card-left, var(--board-card-left));
  border-radius: var(--board-card-card-radius, var(--board-card-radius));
  padding: var(--board-card-card-pad, var(--board-card-pad));
  font-size: var(--board-card-card-size, var(--board-card-size));
  color: var(--board-card-card-color, var(--board-card-color));
}
.board-render .board-type-card:has(> .box-content > .board-item) {
  background: var(--board-card-panel-bg, var(--board-panel-bg, var(--board-card-zone-bg)));
}
.board-render .board-type-card:has(> .box-content > .board-item) > .box-title,
.board-render .board-type-card:has(> .box-content > .board-item) > .board-zone-title {
  background: var(--board-card-panel-header-bg, var(--board-panel-header-bg));
}

.board-render .board-type-diamond {
  background: var(--board-diamond-zone-bg, transparent) !important;
  border-color: var(--board-diamond-zone-border, transparent) !important;
  padding: var(--board-diamond-zone-pad, 0) !important;
}

.board-render .board-type-container,
.board-render .box.board-type-container {
  background: var(--board-container-zone-bg, transparent) !important;
  /* Shell padding stays 0 — inset is applyFlex on .box-content (28/30). */
  padding: 0 !important;
}
/* Nested boxes inside a container keep their own type fills (do not inherit hollow). */
.board-render .board-type-container > .box-content > .box.board-type-card,
.board-render .board-type-container > .box-content > .board-zone.board-type-card {
  background: var(--board-card-zone-bg, var(--board-zone-bg)) !important;
  border: 1px solid var(--board-card-zone-border, var(--board-zone-border)) !important;
  border-radius: var(--board-card-zone-radius, var(--board-zone-radius));
  padding: var(--board-card-zone-pad, var(--board-zone-pad)) !important;
  box-shadow: none;
}
.board-render .board-type-container > .box-content > .box.board-type-card .board-card,
.board-render .board-type-container > .box-content > .board-zone.board-type-card .board-card {
  background: var(--board-card-card-bg, var(--board-card-bg));
  border-color: var(--board-card-card-border, var(--board-card-border));
  border-left: var(--board-card-card-left, var(--board-card-left));
  color: var(--board-card-card-color, var(--board-card-color));
}

.board-render .board-type-container > .box-content > .board-item.board-card {
  background: var(--board-container-card-bg, var(--board-card-bg));
  border-color: var(--board-container-card-border, var(--board-card-border));
  border-left: var(--board-container-card-left, var(--board-card-left));
  border-radius: var(--board-container-card-radius, var(--board-card-radius));
  padding: var(--board-container-card-pad, var(--board-card-pad));
  font-size: var(--board-container-card-size, var(--board-card-size));
  color: var(--board-container-card-color, var(--board-card-color));
}

/* Adjacent item palette — scoped by parent box type */
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+1),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+1) { background: var(--board-card-item-bg-1, var(--board-container-item-bg-1, var(--board-item-bg-1, #e8f1ff))) !important; }
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+2),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+2) { background: var(--board-card-item-bg-2, var(--board-container-item-bg-2, var(--board-item-bg-2, #fef9c3))) !important; }
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+3),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+3) { background: var(--board-card-item-bg-3, var(--board-container-item-bg-3, var(--board-item-bg-3, #dcfce7))) !important; }
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+4),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+4) { background: var(--board-card-item-bg-4, var(--board-container-item-bg-4, var(--board-item-bg-4, #f3e8ff))) !important; }
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+5),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+5) { background: var(--board-card-item-bg-5, var(--board-container-item-bg-5, var(--board-item-bg-5, #ffedd5))) !important; }
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+6),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+6) { background: var(--board-card-item-bg-6, var(--board-container-item-bg-6, var(--board-item-bg-6))) !important; }
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+7),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+7) { background: var(--board-card-item-bg-7, var(--board-container-item-bg-7, var(--board-item-bg-7))) !important; }
.board-render .board-type-card > .box-content > .board-item.board-card:nth-of-type(8n+8),
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+8) { background: var(--board-card-item-bg-8, var(--board-container-item-bg-8, var(--board-item-bg-8))) !important; }

/* container-specific palette wins when parent is container */
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+1) { background: var(--board-container-item-bg-1, #e8f1ff) !important; }
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+2) { background: var(--board-container-item-bg-2, #fef9c3) !important; }
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+3) { background: var(--board-container-item-bg-3, #dcfce7) !important; }
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+4) { background: var(--board-container-item-bg-4, #f3e8ff) !important; }
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+5) { background: var(--board-container-item-bg-5, #ffedd5) !important; }
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+6) { background: var(--board-container-item-bg-6, var(--board-container-item-bg-1)) !important; }
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+7) { background: var(--board-container-item-bg-7, var(--board-container-item-bg-2)) !important; }
.board-render .board-type-container > .box-content > .board-item.board-card:nth-of-type(8n+8) { background: var(--board-container-item-bg-8, var(--board-container-item-bg-3)) !important; }

/* Board keeps top-float visible for Source / Diagram theme / Export / UI theme */



/* SOURCE_LEFT_12: dock source 12px from sheet/viewport; theme+more on right */
html[data-drawer-mode="board"] .top-float {
  position: absolute !important;
  inset: 12px 12px auto 12px !important;
  left: 12px !important;
  right: 12px !important;
  top: 12px !important;
  width: auto !important;
  max-width: none !important;
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 8px !important;
  transform: none !important;
  opacity: 1 !important;
  transition: none !important;
  padding: 0 !important;
  margin: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  pointer-events: none !important;
  z-index: 20 !important;
}
.top-float-left,
.top-float-right {
  display: flex; align-items: center; gap: 8px; pointer-events: auto;
}
.top-float-left { justify-content: flex-start; }
.top-float-right { justify-content: flex-end; margin-left: auto; }
.top-float .btn-source,
.top-float .btn-theme,
.top-float .btn-more {
  box-sizing: border-box;
  width: 32px; height: 32px; min-width: 32px; margin: 0; padding: 0;
  border-radius: 10px; border: 1px solid var(--stroke);
  background: var(--panel-solid); color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}

/* UNIFIED_TOOLBAR_V2 */
/* THEME_ICON_GRID_V1 */

/* Theme icon button */
.top-float .btn-theme {
  box-sizing: border-box;
  width: 32px; height: 32px; min-width: 32px; margin: 0; padding: 0;
  border-radius: 10px; border: 1px solid var(--stroke);
  background: var(--panel-solid); color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.top-float .btn-theme:hover { background: var(--accent-soft); }
.top-float-theme .menu-panel { right: 0; left: auto; }
.top-float-theme .theme-item.is-active { font-weight: 650; color: var(--accent, #2563eb); }
/* Shared grid canvas — no diagram chrome frame / white plate */
html[data-drawer-mode="board"] .canvas-shell {
  background-color: #f8fafc !important;
  background-image: linear-gradient(rgba(100,116,139,.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100,116,139,.12) 1px, transparent 1px) !important;
  background-size: 20px 20px !important;
}
html[data-drawer-mode="board"][data-diagram-theme="kami"] .canvas-shell {
  background-color: #f5f4ed !important;
  background-image: linear-gradient(rgba(80,78,73,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80,78,73,.08) 1px, transparent 1px) !important;
  background-size: 24px 24px !important;
}
.board-render,
.board-render[data-board-theme="default"],
.board-render:not([data-board-theme]),
.board-render[data-board-theme="classic"],
.board-render[data-board-theme="pastel"],
.board-render[data-board-theme="kami"],
.board-render[data-board-theme="minimal"],
.board-render[data-board-theme="slate"] {
  border: 0 !important;
  box-shadow: none !important;
  background: transparent !important;
  border-radius: 0 !important;
}
html[data-drawer-mode="board"] #preview svg {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  filter: none !important;
  padding: 0 !important;
  border-radius: 0 !important;
}
/* Top toolbar layout — Source hugs Lulu Drawer sheet; ⋯ far right */
html[data-drawer-mode="board"] .top-float {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  width: auto;
  max-width: none;
  display: flex !important;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  transform: none !important;
  opacity: 1 !important;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  pointer-events: none;
  z-index: 5;
}
html[data-drawer-mode="board"] .top-float > * { pointer-events: auto; }
.board-account {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 0;
  position: relative;
}
html[data-drawer-mode="board"] .top-float .board-account-btn {
  height: 32px;
  min-width: 32px;
  padding: 0 12px;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  background: var(--panel-solid, #fff);
  box-shadow: var(--shadow-soft);
  font-size: 12px;
  font-weight: 550;
  color: var(--text, #222);
}
html[data-drawer-mode="board"] .top-float .board-account-btn:hover {
  background: var(--panel-solid, #fff);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--stroke));
}
.board-session {
  position: relative;
  min-width: 0;
}
.board-session[hidden] { display: none !important; }
.board-account-chip {
  appearance: none;
  height: 32px;
  max-width: 16rem;
  padding: 0 10px 0 5px;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  background: var(--panel-solid, #fff);
  box-shadow: var(--shadow-soft);
  color: var(--text, #222);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  font: 12px/1.2 inherit;
}
.board-account-chip:hover,
.board-account-chip[aria-expanded="true"] {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--stroke));
}
.board-account-chip:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 2px;
}
.board-account-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  overflow: hidden;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--accent, #2563eb) 14%, var(--panel-solid, #fff));
  color: var(--accent, #2563eb);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.board-account-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.board-account-avatar img[hidden],
.board-account-initials[hidden] { display: none; }
.board-account-name {
  max-width: 9.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  font-weight: 560;
}
.board-account-caret {
  width: 0;
  height: 0;
  border-left: 3.5px solid transparent;
  border-right: 3.5px solid transparent;
  border-top: 4px solid var(--muted, #64748b);
  flex: 0 0 auto;
  margin-left: 1px;
}
.board-auth-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  display: flex;
  flex-direction: column;
  min-width: 12rem;
  padding: 4px;
  border: 1px solid var(--stroke, #e5e7eb);
  border-radius: 10px;
  background: var(--panel-solid, #fff);
  box-shadow: 0 10px 28px rgba(15, 23, 42, .16);
  z-index: 30;
}
.board-auth-menu[hidden] { display: none; }
.board-session-meta {
  padding: 7px 9px 8px;
  margin: 0 0 2px;
  border-bottom: 1px solid var(--stroke, #e5e7eb);
  color: var(--muted, #64748b);
  font-size: 11px;
  line-height: 1.35;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.board-session-meta:empty { display: none; }
.board-auth-provider {
  appearance: none;
  border: 0;
  border-radius: 7px;
  padding: 8px 9px;
  background: transparent;
  color: var(--text, #222);
  cursor: pointer;
  font: 12px/1.3 inherit;
  text-align: left;
}
.board-auth-provider:hover,
.board-auth-provider:focus-visible {
  background: color-mix(in srgb, var(--accent, #2563eb) 10%, transparent);
  outline: none;
}
.top-float-spacer { flex: 1 1 auto; min-width: 12px; pointer-events: none !important; }
.diagram-theme-wrap {
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px; padding: 0 8px 0 10px;
  border: 1px solid var(--stroke); border-radius: 10px;
  background: var(--panel-solid); color: var(--text);
}
.diagram-theme-label { font-size: 11px; color: var(--muted); white-space: nowrap; }
.top-float select.diagram-theme {
  height: 28px; border: 0; background: transparent; color: var(--text);
  padding: 0 4px; font: 12px/1 inherit; outline: none; cursor: pointer;
}
.top-float .top-float-more { position: relative; }
.top-float .btn-more,
.top-float .btn-source {
  box-sizing: border-box;
  width: 32px; height: 32px; min-width: 32px; margin: 0; padding: 0;
  border-radius: 10px; border: 1px solid var(--stroke);
  background: var(--panel-solid); color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
}
/* Diagram theme */

html[data-drawer-mode="board"] #preview svg { filter: none; background: transparent; border: 0; border-radius: 0; padding: 0; }
html[data-drawer-mode="board"] #preview .board-diamond-shape,
html[data-drawer-mode="board"] #preview .board-item-diamond-shape,
html[data-drawer-mode="board"] #preview .board-edges { filter: none; background: transparent; border: 0; border-radius: 0; padding: 0; }
/* World layer: zero-size anchor; edges paint in world px and are never clipped */
.board-render .board-canvas { width: 0 !important; height: 0 !important; min-height: 0 !important; }
.board-render svg.board-edges { width: 1px !important; height: 1px !important; overflow: visible !important; }
#preview.board-preview { width: max-content; min-width: 0; height: 100%; padding: 0; }
/* Board: hit area fills the stage (not just content bbox), still grows with large boards */
html[data-drawer-mode="board"] #preview,
html[data-drawer-mode="board"] #preview.board-preview {
  min-width: 100%;
  min-height: 100%;
  width: max-content;
  height: max-content;
  box-sizing: border-box;
}
.board-render {
  position: relative; width: max-content; min-width: 0; box-sizing: border-box;
  padding: 34px 40px 62px; color: var(--board-color, #1e293b); background: #fbfcfe;
  border: 0; border-radius: 0; box-shadow: none; background: transparent;
  font-family: var(--board-font, Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif);
  letter-spacing: -0.012em;
}
.board-html-header { display: block; margin: 0 0 28px; padding: 0 0 18px; border-bottom: 1px solid #dbe4ef; }
.board-html-header h2 { margin: 0; color: #0f172a; font-size: var(--board-display-size, 24px); line-height: 1.1; font-weight: 720; letter-spacing: -0.04em; }
.board-render[data-board-theme="kami"] {
  letter-spacing: 0;
  font-weight: 600;
  -webkit-font-smoothing: auto;
}
.board-render[data-board-theme="kami"] .board-html-header h2 {
  color: #141413;
  font-weight: 600;
  letter-spacing: 0;
}
.board-html-header p { margin: 8px 0 0; color: #64748b; font-size: 12px; line-height: 1.35; letter-spacing: 0.01em; }
.board-canvas { position: relative; min-width: 0; overflow: visible; }
/* Zones under edges so short-gap labels (ABCDE) are not covered by box fill. */
.board-canvas .board-zone,
.board-canvas .board-item { z-index: 1 !important; }
.board-edges {
  z-index: 50 !important;
  transform: translateZ(0); /* own layer above HTML boxes */
}
.board-zone {
  position: absolute; box-sizing: border-box; min-width: 0; max-width: none; padding: 12px 14px;
  border: 1px solid #dbe4ef; border-radius: 6px; background: #fff;
  box-shadow: 0 3px 10px rgba(15, 23, 42, .045), 0 1px 2px rgba(15, 23, 42, .04); z-index: 1;
}
.board-zone:not(.board-diamond) {
  display: flex;
  flex-direction: column;
}
.board-zone:not(.board-diamond) > .box-content {
  flex: 1 1 auto;
  min-height: 0;
}
.board-zone-title { display: flex; align-items: flex-start; gap: 9px; min-width: 0; min-height: 20px; margin: 0 0 12px; color: #1e293b; font-size: 13px; line-height: 1.22; font-weight: 680; }
.board-title-copy { display: inline-flex; flex: 1 1 auto; flex-direction: column; gap: 3px; min-width: 0; overflow: hidden; }
.board-title-name,
.board-item-text { min-width: 0; overflow-wrap: anywhere; }
.board-title-name { display: block; min-width: min-content; overflow-wrap: break-word; }
.board-title-subtitle { color: #64748b; font-size: 10px; line-height: 1.2; font-weight: 520; }
.board-icon { display: inline-flex; flex: 0 0 auto; width: 18px; height: 18px; align-items: center; justify-content: center; color: #64748b; line-height: 1; }
.board-icon svg { display: block; width: 100%; height: 100%; overflow: visible; }
.board-zone .box-content { position: relative; display: flex; min-width: 0; }
.board-card { position: relative; min-width: 0; padding: 9px 11px; border: 1px solid #dbe4ef; border-left: 3px solid #94a3b8; border-radius: 10px; background: #fff; color: #334155; box-shadow: 0 1px 2px rgba(15,23,42,.025); font-size: 11.5px; line-height: 1.32; overflow-wrap: anywhere; }
.board-item { display: flex; align-items: flex-start; gap: 9px; }
.board-item .board-icon { flex: 0 0 auto; }
.board-item-copy { display: flex; flex: 1 1 auto; min-width: 0; flex-direction: column; gap: 2px; }
.board-item-text { display: block; min-width: 0; overflow-wrap: anywhere; }
.board-card::before { display: none; }
.board-kind-document { border-left-color: #64748b; background: #fbfcfe; }
.board-kind-kit { border-left-color: #7c83a5; background: #fcfbff; }
.board-kind-env-local { border-left-color: #4e9278; background: #f8fcfa; }
.board-kind-env-sbx { border-left-color: #3f7faf; background: #f7fbfe; }
.board-kind-artifact { border-left-color: #7764aa; background: #fbfaff; }
.board-kind-suite { border-left-color: #8a6684; background: #fdfafd; }
.board-kind-document .board-icon,
.board-kind-kit .board-icon { color: #64748b; }
.board-kind-env-local .board-icon { color: #5b8c78; }
.board-kind-env-sbx .board-icon { color: #4f80a8; }
.board-kind-artifact .board-icon,
.board-kind-suite .board-icon { color: #7a6aa8; }
.board-kind-suite .board-card { max-width: 280px; }
.board-kit .box-content { gap: 0 !important; }
.board-branch-local,
.board-branch-docker { border-left-width: 2px; }
.board-item-kind { display: block; margin: 0 0 3px; color: #475569; font-size: 10px; line-height: 1.15; font-weight: 680; }
.board-item-subtitle { display: block; color: #64748b; font-size: 10px; line-height: 1.25; }
.board-title-only:not(.board-diamond) {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.board-title-only.board-type-card {
  min-height: 78px;
}
.board-title-only .board-zone-title {
  margin: 0;
  justify-content: center;
  text-align: center;
}
.board-title-only .board-title-copy {
  align-items: center;
  text-align: center;
}
.board-title-only > .box-content,
.board-title-only .board-diamond-inner > .box-content {
  display: none !important;
}
/* Transparent chip host around the rhombus. Keep this layer. */
.board-item-diamond {
  position: relative;
  overflow: visible;
  justify-content: center;
  align-items: center;
  align-self: auto;
  text-align: center;
  flex: 0 0 auto;
  gap: 0;
}
.board-render .board-item.board-item-diamond.board-card:not(.is-measuring-chip-fill),
.board-render .board-type-container > .box-content > .board-item.board-card.board-item-diamond:not(.is-measuring-chip-fill),
.board-render .board-type-card > .box-content > .board-item.board-card.board-item-diamond:not(.is-measuring-chip-fill) {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  padding: 0 !important;
}
.board-item-diamond-visual { pointer-events: none; overflow: visible; }
.board-item-diamond-shape { display: block; overflow: visible; }
.board-item-diamond .board-item-copy {
  z-index: 1;
  flex: 0 0 auto;
  width: auto;
  text-align: center;
  justify-content: center;
  align-items: center;
  line-height: 1.1;
}
.board-item-diamond .board-item-text { text-align: center; line-height: 1.1; }
.board-render .board-item.board-item-diamond .board-item-copy,
.board-render .board-item.board-item-diamond .board-item-text {
  width: auto;
  flex: 0 0 auto;
  text-align: center;
  justify-content: center;
  align-items: center;
}
.board-item-diamond-halo { visibility: hidden; }
.board-item-diamond.board-selection { outline: none !important; }
.board-item-diamond.board-selection > .board-item-diamond-visual { outline: none !important; }
.board-item-diamond.board-selection .board-item-diamond-halo { visibility: visible; }
.board-diamond { display: flex; align-items: center; justify-content: center; padding: 0; background: transparent; border: 0; box-shadow: none; overflow: visible; }
.board-diamond-visual { position: relative; flex: 0 0 auto; }
.board-diamond.board-selection { outline: none !important; }
.board-diamond.board-selection > .board-diamond-visual { outline: 3px solid #f59e0b !important; outline-offset: 3px; }
.board-diamond-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; }
.board-diamond .box-content { padding: 0; gap: 6px; align-items: stretch; flex: 0 0 auto; width: max-content; max-width: 100%; }
.board-diamond .box-content > .board-item { width: 100%; box-sizing: border-box; }
.board-diamond-shape { z-index: 0; }
.board-diamond .board-zone-title { position: relative; z-index: 1; justify-content: center; width: auto; max-width: none; margin: 0; color: #1e4f86; text-align: center; font-size: 12px; line-height: 1.16; }
.board-diamond .board-title-copy { align-items: center; max-width: 100%; text-align: center; overflow: visible; }
.board-diamond .board-title-name { overflow-wrap: anywhere; }
.board-diamond .board-item { overflow-wrap: anywhere; }
.board-edges { z-index: 50 !important; shape-rendering: geometricPrecision; pointer-events: none; transform: translateZ(0); }
.board-edge-hit { pointer-events: stroke !important; cursor: pointer; }
.board-edge-visible { pointer-events: none; }
.board-edge-visible.board-edge-selected { stroke-width: 2.6px !important; }
.board-edge-label { paint-order: stroke; stroke: #fbfcfe; stroke-width: 5px; stroke-linejoin: round; fill: #475569; font-size: var(--board-card-size, 12px); font-weight: 650; letter-spacing: 0; pointer-events: auto; cursor: pointer; }
.board-edge-label.board-edge-selected { font-weight: 700; }
.board-slot {
  position: relative;
  display: block;
  box-sizing: border-box;
  flex: 0 0 auto;
  pointer-events: none;
  overflow: visible;
}
.board-slot.is-link { pointer-events: auto; cursor: pointer; }
.board-slot-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.board-slot-label {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0;
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 0 3px #fbfcfe, 0 0 3px #fbfcfe, 0 0 3px #fbfcfe;
}
.board-feedback-label { fill: #a65361; }
.board-legend { position: absolute; left: 0; bottom: -46px; z-index: 2; display: flex; gap: 18px; align-items: center; padding: 5px 0; color: #64748b; font-size: 10px; }
.board-legend span { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.board-legend-line { display: inline-block; width: 26px; border-top: 2px solid #2563eb; }
.board-legend-evidence { border-top-color: #b85a68; border-top-style: dashed; }

/* TOOLBAR_V3: canvas-shell already sits beside sheet — always left:12px; 3 buttons gap 8px */
html[data-drawer-mode="board"] .top-float {
  position: absolute !important;
  top: 12px !important;
  left: 12px !important;
  right: auto !important;
  width: auto !important;
  max-width: none !important;
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: flex-start !important;
  gap: 8px !important;
  transform: none !important;
  opacity: 1 !important;
  padding: 0 !important;
  margin: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  pointer-events: none !important;
  z-index: 40 !important;
  overflow: visible !important;
}
html[data-drawer-mode="board"] .top-float > * {
  pointer-events: auto;
}
.top-float .btn-source,
.top-float .btn-theme,
.top-float .btn-more {
  box-sizing: border-box;
  width: 32px; height: 32px; min-width: 32px; margin: 0; padding: 0;
  border-radius: 10px; border: 1px solid var(--stroke);
  background: var(--panel-solid); color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex: 0 0 auto;
}
.top-float .menu { position: relative; overflow: visible; }
.top-float .menu-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: auto;
  min-width: 160px;
  z-index: 50;
  display: none;
  flex-direction: column;
  padding: 6px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: var(--panel-solid);
  box-shadow: var(--shadow, 0 8px 24px rgba(0,0,0,.12));
}
.top-float .menu.open > .menu-panel { display: flex !important; }
.top-float .menu-item {
  text-align: left; width: 100%; border: 0; background: transparent;
  padding: 8px 10px; border-radius: 8px; cursor: pointer; color: var(--text);
}
.top-float .menu-item:hover { background: var(--accent-soft, rgba(37,99,235,.08)); }
.top-float .theme-item.is-active { font-weight: 650; color: var(--accent, #2563eb); }
#canvasShell,
.canvas-shell { overflow: visible !important; }


/* MENUS_NO_SHEET_OVERLAP: sheet above menus; panels stay in canvas */
.sheet { z-index: 60 !important; }
html[data-drawer-mode="board"] .top-float {
  z-index: 30 !important;
}
.top-float .menu-panel {
  position: absolute !important;
  top: calc(100% + 6px) !important;
  left: 0 !important;
  right: auto !important;
  z-index: 31 !important;
}
/* Prefer opening to the right so panels grow into the canvas, not back over the sheet */
.top-float .top-float-theme .menu-panel,
.top-float .top-float-more .menu-panel {
  left: 0 !important;
  right: auto !important;
  transform: none !important;
}


/* ZONE/CARD PAD: theme chrome must not collapse (layout padding:0 is content-only); fallbacks match typeChrome defaults */
.board-render .board-type-card:not(.board-type-container) {
  padding: var(--board-card-zone-pad, var(--board-zone-pad, 12px 14px)) !important;
  box-sizing: border-box !important;
  overflow: visible !important;
}
.board-render .board-type-card > .box-content {
  box-sizing: border-box;
  /* gap comes from applyFlex; keep content pad from layout without canceling zone chrome */
}
.board-render .board-type-card .board-item.board-card,
.board-render .board-type-card .board-card.board-item {
  padding: var(--board-card-card-pad, var(--board-card-pad, 6px 10px)) !important;
  box-sizing: border-box !important;
}
.board-render .board-type-container .board-item.board-card,
.board-render .board-type-container .board-card.board-item {
  padding: var(--board-container-card-pad, var(--board-card-pad, 6px 10px)) !important;
  box-sizing: border-box !important;
}

/* Board title is document.title; do not paint it on the canvas. */
.board-render .board-html-header,
.board-render .board-title-node {
  display: none !important;
}
.board-render .board-legend { display: none !important; }
.board-render .board-icon { display: none !important; }
.board-render .board-item {
  gap: 0 !important;
  font-size: var(--board-card-size, 12px);
}

/* Item text default: centered */
.board-render .board-item.board-item-type-chip,
.board-render .board-item.board-card.board-item-type-chip,
.board-render .board-item.board-item-type-text,
.board-render .board-item.board-item-type-note,
.board-render .board-item.board-card.board-item-type-note {
  max-width: var(--board-item-cap, 16rem);
}
.board-render .board-item[data-board-cap="off"] {
  max-width: none;
  width: max-content;
}
.board-render .board-item[data-board-cap="off"] .board-item-copy,
.board-render .board-item[data-board-cap="off"] .board-item-text {
  width: max-content;
  max-width: none;
  white-space: pre;
  overflow-wrap: normal;
}
.board-render .board-item.board-item-type-chip,
.board-render .board-item.board-card.board-item-type-chip {
  justify-content: center;
  align-items: center;
  text-align: center;
  min-width: min-content;
}
.board-render .board-item.board-item-type-chip .board-item-copy,
.board-render .board-item.board-item-type-chip .board-item-text {
  text-align: center;
  width: 100%;
  justify-content: center;
  align-items: center;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  min-width: min-content;
}
.board-render .board-item.board-item-type-chip.board-item-diamond .board-item-copy,
.board-render .board-item.board-item-type-chip.board-item-diamond .board-item-text {
  width: auto;
  max-width: 100%;
  line-height: 1.1;
  text-align: center;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.board-render .board-item.board-item-type-text {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 2px 0 !important;
  justify-content: flex-start;
  align-items: flex-start;
  text-align: left;
}
.board-render .board-item.board-item-type-text .board-item-copy,
.board-render .board-item.board-item-type-text .board-item-text {
  text-align: left;
  width: 100%;
  font-weight: 550;
  color: var(--board-color, #222);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.board-render .board-zone-title {
  gap: 0 !important;
  align-items: center;
}
.board-render .board-zone-glyph {
  display: inline-flex;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  margin-right: 6px;
  color: currentColor;
}
.board-render .board-zone-glyph svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* BOARD_TYPE_V1 */
.board-inspector { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 8px 10px; border-top: 1px solid var(--stroke); }
.board-inspector[hidden] { display: none !important; }
.board-inspector-label { font-size: 11px; color: var(--muted, #64748b); }
#boardTypeEditor {
  min-width: 96px; border: 1px solid var(--stroke); border-radius: 6px;
  padding: 5px 7px; background: var(--panel-solid); color: var(--text);
  font: 12px var(--sans); outline: none;
}
#boardTypeEditor:focus { border-color: var(--accent); }
.board-render .board-item.board-item-type-note,
.board-render .board-item.board-card.board-item-type-note {
  justify-content: flex-start;
  align-items: flex-start;
  text-align: left;
  font-weight: 400;
  line-height: 1.5;
  padding: 8px 14px 8px 10px !important;
}
.board-render .board-item-note .board-item-copy,
.board-render .board-item-note .board-item-text {
  position: relative;
  z-index: 1;
  text-align: left;
  width: 100%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.board-render .board-item-md h1,
.board-render .board-item-md h2,
.board-render .board-item-md h3 {
  margin: 0;
  padding: 0;
  color: inherit;
  font-family: inherit;
  line-height: 1.25;
  font-weight: 650;
}
.board-render .board-item-md h1 {
  font-size: 1.35em;
  padding-bottom: 0.22em;
  margin-bottom: 0.28em;
  border-bottom: 1px solid rgba(15, 23, 42, .12);
}
.board-render .board-item-md h2 { font-size: 1.15em; }
.board-render .board-item-md h3 { font-size: 1em; }
.board-render .board-item-md h1:last-child,
.board-render .board-item-md h2:last-child,
.board-render .board-item-md h3:last-child {
  margin-bottom: 0;
}
.board-render .board-item-md strong { font-weight: 650; }
.board-render .board-item-md em { font-style: italic; }
.board-render .board-item-md ul,
.board-render .board-item-md ol {
  margin: 0.25em 0 0;
  padding-left: 1.25em;
}
.board-render .board-item-md ul:first-child,
.board-render .board-item-md ol:first-child { margin-top: 0; }
.board-render .board-item-md li {
  margin: 0;
  padding: 0;
}
.board-render .board-item-md code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85em;
  background: rgba(15, 23, 42, .06);
  padding: 0.12em 0.38em;
  border-radius: 4px;
}
.board-render .board-item-note,
.board-render .board-item.board-card.board-item-note,
.board-render .board-type-card > .box-content > .board-item.board-card.board-item-note:nth-of-type(n),
.board-render .board-type-container > .box-content > .board-item.board-card.board-item-note:nth-of-type(n) {
  position: relative;
  overflow: visible !important;
  background: transparent !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}
.board-render .board-item-note-sheet {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: #fffbeb;
  border: 1px solid #c5c07a;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}
.board-render .board-item-note-fold {
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  z-index: 1;
  pointer-events: none;
  background: #d4ce86;
  clip-path: polygon(0 0, 100% 100%, 0 100%);
}
.board-render[data-board-theme="kami"] .board-item-note-sheet {
  background: #f0e4b0;
  border-color: #9a8848;
}
.board-render[data-board-theme="kami"] .board-item-note-fold {
  background: #b3942e;
}
.board-render[data-board-theme="kami"] .board-item-note .board-item-text {
  color: #141413;
}
.board-render[data-board-theme="kami"] .board-item-note .board-item-md h1 {
  border-bottom-color: #6b6a64;
}
.board-render[data-board-theme="kami"] .board-diamond-shape polygon {
  fill: var(--board-card-bg, #faf9f5);
  stroke: var(--board-edge, #1B365D);
}
.board-render[data-board-theme="kami"] .board-edge-visible {
  stroke-width: 1.25px;
}
.board-render[data-board-theme="kami"] .board-edge-label {
  stroke: #f5f4ed;
  fill: #141413;
  font-weight: 600;
}
.board-render[data-board-theme="kami"] .board-edge-label.board-edge-selected {
  font-weight: 700;
}
.board-render .board-item-icon {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 2px 0 !important;
  min-height: 0;
  justify-content: flex-start;
  align-items: center;
  gap: 8px !important;
}
.board-render .board-item-icon .board-item-glyph {
  display: inline-flex;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  color: var(--board-ink, var(--text, #1f2937));
}
.board-render .board-item-icon .board-item-glyph svg {
  display: block;
  width: 100%;
  height: 100%;
}
.board-render .board-item-icon .board-item-copy,
.board-render .board-item-icon .board-item-text {
  text-align: left;
  width: auto;
  font-weight: 550;
  color: var(--board-ink, var(--text, #1f2937));
}
.board-render .board-item-icon.is-icon-only {
  gap: 0 !important;
  width: max-content;
  max-width: 100%;
  min-width: 0 !important;
  align-self: center;
}
.board-render .board-item-icon.is-icon-only .board-item-copy {
  display: none !important;
}
.board-render .board-type-card { /* default */ }
.board-render .board-type-diamond { }

/* BOARD_DRAG_FREE: allow dragging past origin; keep nodes visible */
.board-render .board-canvas { overflow: visible !important; }
.board-render { overflow: visible !important; }

/* BOARD_ITEM_HIT: items must receive clicks above parent box */
.board-render .board-item { pointer-events: auto; position: relative; z-index: 2; cursor: pointer; }
.board-render .board-root-item {
  position: absolute !important;
  z-index: 4;
  cursor: grab;
  min-width: 48px;
}
.board-render .board-root-item.board-card {
  padding: var(--board-card-pad, 6px 10px) !important;
  box-sizing: border-box !important;
}
.board-render .board-zone { cursor: grab; }
.board-render .board-zone .box-content,
.board-render .board-zone .board-modules { pointer-events: auto; }

/* BOARD_DOCK: right rail — Layout / Props / Source; one panel at a time */
html[data-drawer-mode="board"] .app {
  grid-template-columns: minmax(0, 1fr);
}
.sheet { display: none !important; }
html[data-drawer-mode="board"] .zoom-float { right: 52px; } /* clear 40px dock rail so Fit is not covered */
.board-dock {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: auto;
  width: 40px;
  max-width: min(80vw, 720px);
  display: none;
  flex-direction: row-reverse;
  z-index: 45;
  overflow: hidden;
  background: var(--panel-solid, #fff);
  color: var(--text);
  border-left: 1px solid var(--stroke);
  box-shadow: none;
  pointer-events: auto;
  transition: none; /* avoid open/close width jitter */
}
html[data-drawer-mode="board"] .board-dock { display: flex; }
/* Layout tab hidden; settings live in Style */
[data-dock="layout"] {
  display: none !important;
}
.board-dock[data-open="props"],
.board-dock[data-open="layout"],
.board-dock[data-open="source"],
.board-dock[data-open="export"],
.board-dock[data-open="style"] {
  width: var(--dock-open-width, 400px);
  box-shadow: -12px 0 32px rgba(15, 23, 42, .05);
}
.board-dock-resize {
  display: none;
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 10px;
  cursor: col-resize;
  z-index: 3;
  touch-action: none;
  background: transparent;
}
.board-dock-resize::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: transparent;
  pointer-events: none;
  transition: width .12s ease, background-color .12s ease;
}
.board-dock[data-open="props"] .board-dock-resize,
.board-dock[data-open="layout"] .board-dock-resize,
.board-dock[data-open="source"] .board-dock-resize,
.board-dock[data-open="export"] .board-dock-resize,
.board-dock[data-open="style"] .board-dock-resize {
  display: block;
}
.board-dock-resize:hover::after,
.board-dock.is-resizing .board-dock-resize::after {
  width: 2px;
  background: var(--accent);
}
.board-dock-rail {
  flex: 0 0 40px;
  width: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 0;
  border-left: 1px solid var(--stroke);
  background: color-mix(in srgb, var(--canvas) 35%, var(--panel-solid));
}
.board-dock-tab {
  position: relative;
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  min-height: 32px;
  max-height: 32px;
  border: 0;
  padding: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted, #64748b);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}
.board-dock-tab:hover { background: color-mix(in srgb, var(--text) 6%, transparent); color: var(--text); }
.board-dock-tab.is-active {
  background: color-mix(in srgb, var(--accent) 10%, var(--panel-solid));
  color: var(--accent);
}
.board-dock-tab.is-active::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.board-dock-tab-icon { width: 18px; height: 18px; display: block; }
.board-dock-help { display: none; }
html[data-persist="hash"] .board-dock-help {
  display: flex;
}
.board-dock-help-glyph {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
}
.board-dock-tab-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.board-dock-panel {
  display: none;
  flex: 1 1 auto;
  min-width: 0;
  padding: 16px 16px 20px;
  flex-direction: column;
  gap: 12px;
  overflow: auto;
}
.board-dock[data-open="props"] [data-dock-panel="props"],
.board-dock[data-open="layout"] [data-dock-panel="layout"],
.board-dock[data-open="source"] [data-dock-panel="source"],
.board-dock[data-open="export"] [data-dock-panel="export"],
.board-dock[data-open="style"] [data-dock-panel="style"] {
  display: flex;
}
.board-dock[data-open="source"] [data-dock-panel="source"] {
  padding: 16px 0 16px;
}
.board-dock[data-open="export"] [data-dock-panel="export"],
.board-dock[data-open="style"] [data-dock-panel="style"] {
  padding: 14px;
}
.board-dock[data-open="export"] [data-dock-panel="export"] .dock-source-head,
.board-dock[data-open="style"] [data-dock-panel="style"] .dock-source-head {
  padding: 0; /* panel already pads; avoid title drifting right */
}
.dock-source-body {
  display: none;
  flex: 1 1 auto;
  min-height: 0;
  flex-direction: column;
}
.dock-source-body[data-source-mode="board"] {
  display: flex;
}
.dock-source-head {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 16px 10px;
  min-height: 28px;
  box-sizing: border-box;
  border-bottom: 1px solid var(--stroke);
}
.dock-source-head strong {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 20px;
  min-height: 20px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dock-source-identity {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
  flex: 1 1 auto;
}
.doc-ver {
  flex: 0 0 auto;
  font-size: 10.5px;
  font-weight: 550;
  line-height: 16px;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--muted, #64748b);
  padding: 1px 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text) 6%, transparent);
}
.dock-source-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  flex: 0 0 auto;
}
.dock-source-actions .btn {
  height: 28px;
  min-height: 28px;
  padding: 0 10px;
  font-size: 12px;
}
.props-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 12px;
  margin-bottom: 2px;
  border-bottom: 1px solid var(--stroke);
}
.props-head strong { font-size: 13px; font-weight: 600; letter-spacing: -0.01em; }
.props-kind {
  font-size: 10px; color: var(--muted, #64748b); font-weight: 600;
  letter-spacing: .04em; text-transform: uppercase;
  padding: 2px 7px; border-radius: 999px;
  background: color-mix(in srgb, var(--text) 5%, transparent);
}
.props-empty { font-size: 12px; color: var(--muted, #64748b); line-height: 1.5; padding: 8px 0; }
.props-fields { display: flex; flex-direction: column; gap: 14px; }
.props-layout {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.props-layout-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; font-weight: 650; color: var(--text);
}
.props-seg {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
}
.props-seg-btn {
  height: 32px; border: 1px solid var(--stroke); border-radius: 8px;
  background: var(--panel-solid); color: var(--text);
  font: 12px var(--sans); cursor: pointer;
}
.props-seg-btn:hover { background: var(--accent-soft); }
.props-seg-btn[aria-pressed="true"] {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, var(--panel-solid));
  color: var(--accent);
  font-weight: 650;
}
.props-shape-seg {
  display: flex;
  grid-template-columns: unset;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  background: color-mix(in srgb, var(--stroke) 10%, var(--panel-solid));
}
.props-shape-btn {
  flex: 1;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  border-color: transparent;
}
.props-shape-btn svg { display: block; }
#boardShapeField[hidden],
#boardShapeLabel[hidden] { display: none !important; }
#boardCapField[hidden],
#boardCapLabel[hidden] { display: none !important; }
.props-field:has(#boardIdLabel[hidden]) { display: none !important; }
.props-field:has(#boardTypeLabel[hidden]) { display: none !important; }
.props-field:has(#boardShapeLabel[hidden]) { display: none !important; }
.props-field:has(#boardArrowLabel[hidden]) { display: none !important; }
.props-field:has(#boardTitleLabel[hidden]) { display: none !important; }

.props-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}
.props-control {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.props-hint-end {
  margin: 0;
  align-self: flex-end;
  text-align: right;
}
.props-label { font-size: 11px; color: var(--muted, #64748b); margin: 0; letter-spacing: .02em; }
#boardTypeEditor,
#boardTitleEditor,
#boardDirEditor,
#boardAlignEditor,
#boardJustifyEditor,
#boardArrowEditor,
#boardCapEditor,
#boardIdEditor {
  width: 100%; box-sizing: border-box; border: 1px solid var(--stroke); border-radius: 8px;
  padding: 8px 10px; min-height: 34px; background: var(--panel-solid); color: var(--text); font: 13px var(--sans); outline: none;
}
.props-arrow-row { display: flex; align-items: stretch; gap: 8px; }
.props-arrow-row[hidden],
#boardArrowLabel[hidden],
#boardArrowReverse[hidden] { display: none !important; }
.props-arrow-row #boardArrowEditor { flex: 1 1 auto; min-width: 0; width: auto; }
.props-arrow-reverse {
  flex: 0 0 40px; width: 40px; box-sizing: border-box;
  border: 1px solid var(--stroke); border-radius: 8px; padding: 0;
  background: var(--panel-solid); color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.props-arrow-reverse svg { width: 16px; height: 16px; display: block; }
.props-arrow-reverse:hover { background: var(--accent-soft); }
.props-arrow-reverse:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 22%, transparent);
}
#boardTitleEditor {
  resize: vertical;
  min-height: 38px;
  line-height: 1.4;
  white-space: pre-wrap;
  field-sizing: content;
}
#boardTitleEditor.is-multiline {
  min-height: 108px;
}
#boardTypeEditor:focus,
#boardTitleEditor:focus,
#boardDirEditor:focus,
#boardAlignEditor:focus,
#boardJustifyEditor:focus,
#boardArrowEditor:focus,
#boardCapEditor:focus,
#boardIdEditor:focus {
  border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 22%, transparent);
}
#boardTypeEditor,
#boardDirEditor,
#boardAlignEditor,
#boardJustifyEditor,
#boardArrowEditor,
#boardCapEditor {
  appearance: none; -webkit-appearance: none;
  padding-right: 32px;
  background-color: var(--panel-solid);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path fill='none' stroke='%236e6e73' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' d='M2.5 4.5L6 8l3.5-3.5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px 12px;
}
html[data-theme="dark"] #boardTypeEditor,
html[data-theme="dark"] #boardDirEditor,
html[data-theme="dark"] #boardAlignEditor,
html[data-theme="dark"] #boardJustifyEditor,
html[data-theme="dark"] #boardArrowEditor,
html[data-theme="dark"] #boardCapEditor {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path fill='none' stroke='%23a1a1a6' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' d='M2.5 4.5L6 8l3.5-3.5'/></svg>");
}
#boardTypeEditor:disabled { opacity: .65; cursor: not-allowed; }
.props-id-row { display: flex; align-items: stretch; position: relative; }
.props-id-row[hidden],
#boardIdLabel[hidden],
#boardIdDup[hidden] { display: none !important; }
#boardIdEditor {
  flex: 1 1 auto; min-width: 0;
  padding-right: 36px;
  font: 13px var(--mono);
  text-transform: uppercase;
}
#boardIdEditor.is-dup {
  border-color: var(--danger);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--danger) 22%, transparent);
}
.props-id-copy {
  position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; box-sizing: border-box; border: 0; border-radius: 6px;
  padding: 0; background: transparent; color: var(--muted, #64748b);
  appearance: none; -webkit-appearance: none;
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
}
.props-id-copy:hover { background: var(--accent-soft); color: var(--text); }
.props-id-copy:focus {
  outline: none;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 22%, transparent);
}
.props-id-copy.is-copied {
  background: transparent;
  color: var(--ok);
}
.props-id-copy:disabled { opacity: .45; cursor: not-allowed; }
.props-id-copy-icon { width: 16px; height: 16px; display: block; }
.props-id-copy .props-id-copy-b { display: none; }
.props-id-copy.is-copied .props-id-copy-a { display: none; }
.props-id-copy.is-copied .props-id-copy-b { display: block; }
.props-id-dup { margin: 0; font-size: 11px; color: var(--danger); line-height: 1.4; }
.props-hint { margin: 4px 0 0; font-size: 11px; color: var(--muted, #64748b); line-height: 1.4; }
.props-field .props-hint-end { margin: 0; }
#boardDirLabel[hidden],
#boardAlignLabel[hidden],
#boardJustifyLabel[hidden] { display: none !important; }
.props-field:has(#boardDirLabel[hidden]),
.props-field:has(#boardAlignLabel[hidden]),
.props-field:has(#boardJustifyLabel[hidden]) { display: none !important; }
#boardIconField { display: flex; flex-direction: column; gap: 10px; }
#boardIconField[hidden] { display: none !important; }
.props-icon-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  max-height: 220px;
  overflow: auto;
  padding: 4px;
  border: 1px solid var(--stroke);
  border-radius: 8px;
  background: var(--panel-solid);
}
.props-icon-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  font: 12px var(--sans);
  cursor: pointer;
}
.props-icon-btn:hover { background: var(--accent-soft); }
.props-icon-btn.is-selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, var(--panel-solid));
}
.props-icon-glyph { width: 16px; height: 16px; flex: 0 0 auto; color: var(--text); }
.props-icon-glyph svg { display: block; width: 100%; height: 100%; }
.props-icon-num { width: 3ch; flex: 0 0 auto; font-variant-numeric: tabular-nums; color: var(--muted, #64748b); }
.props-icon-gloss { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#boardIconSec { grid-template-columns: repeat(3, 1fr); }
.board-render .board-title-node { cursor: pointer; border-radius: 10px; padding: 6px 14px !important; }
.board-render .board-title-node.board-selection {
  outline: 2px solid var(--accent, #2563eb); outline-offset: 2px;
  background: color-mix(in srgb, var(--accent, #2563eb) 8%, transparent);
}

/* Keep left sheet above any stray overlay */
.sheet { z-index: 60 !important; }

/* BOARD_LINK_MODE */

html.board-link-mode .board-edges,
html.board-link-mode .board-edges *,
html.board-link-mode .board-slot { pointer-events: none !important; }
html.board-link-mode .board-zone { position: relative; z-index: 3; }

html.board-link-mode,
html.board-link-mode .board-canvas,
html.board-link-mode .board-zone {
  cursor: crosshair !important;
}
html.board-link-mode .board-zone.board-link-source,
html.board-link-mode .board-item.board-link-source {
  outline: 2px solid var(--accent, #2563eb);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent, #2563eb) 18%, transparent);
}
html.board-link-mode .board-edit-tool#btnBoardLink.is-active {
  background: color-mix(in srgb, var(--accent, #2563eb) 18%, var(--panel-solid)) !important;
  border-color: var(--accent, #2563eb) !important;
  color: var(--accent, #2563eb) !important;
}


/* Board history list (Source dock) */
[data-persist="hash"]:not([data-cloud-history="on"]) #boardHistoryCombo,
[data-persist="hash"]:not([data-cloud-history="on"]) #boardHistoryEmpty,
[data-persist="hash"]:not([data-cloud-history="on"]) #btnBoardHistoryRefresh {
  display: none;
}
[data-persist="hash"][data-cloud-history="on"] #boardHistoryCombo {
  display: block;
}
[data-persist="hash"][data-cloud-history="on"] #btnBoardHistoryRefresh {
  display: inline-flex;
}
#btnHistoryOpenFile {
  display: none;
}
[data-persist="hash"] #btnHistoryOpenFile {
  display: inline-flex;
}
.history-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 4px 14px 0;
  min-height: 0;
  overflow: visible;
  /* Closed combo is one row; the list overlays the editor. */
  flex: 0 0 auto;
}
.history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.history-head strong {
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.02em;
  color: var(--text, #222);
}
.history-refresh {
  height: 26px !important;
  min-height: 26px !important;
  padding: 0 8px !important;
  font-size: 11px !important;
}
.history-combo {
  position: relative;
}
.history-combo-btn {
  width: 100%;
  min-height: 40px;
  padding: 7px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--stroke, #e5e7eb);
  border-radius: 8px;
  background: var(--panel-solid, #fff);
  color: var(--text, #222);
  cursor: pointer;
  text-align: left;
  box-sizing: border-box;
}
.history-combo-btn:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--accent, #2563eb) 45%, var(--stroke, #e5e7eb));
}
.history-combo-btn:disabled {
  cursor: default;
  opacity: 0.7;
}
.history-combo-face {
  min-width: 0;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}
.history-combo-face .history-item-title,
.history-combo-face .history-item-meta {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-combo-chevron {
  flex: 0 0 auto;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--muted, #64748b);
}
.history-combo.is-open .history-combo-chevron {
  transform: rotate(180deg);
}
.history-pop {
  display: none;
  flex-direction: column;
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 4px);
  max-height: min(360px, 68vh);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--text, #111) 28%, var(--stroke-strong, #ccc));
  border-radius: 8px;
  background: var(--panel-solid, #fff);
  box-shadow: 0 10px 28px rgba(15, 23, 42, .18);
  box-sizing: border-box;
  z-index: 6;
}
.history-combo.is-open .history-pop {
  display: flex;
}
.history-pop[hidden] { display: none !important; }
.history-search {
  flex: 0 0 auto;
  margin: 6px 6px 2px;
  height: 30px;
  padding: 0 8px;
  border: 1px solid color-mix(in srgb, var(--text, #111) 18%, var(--stroke-strong, #ccc));
  border-radius: 6px;
  background: color-mix(in srgb, var(--canvas, #f8fafc) 55%, var(--panel-solid, #fff));
  color: var(--text, #222);
  font: 12px/1.3 inherit;
  outline: none;
}
.history-search:focus {
  border-color: color-mix(in srgb, var(--accent, #2563eb) 55%, var(--stroke-strong, #ccc));
}
.history-list {
  list-style: none;
  margin: 0;
  padding: 4px;
  overflow: auto;
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  flex-direction: column;
  gap: 2px;
  box-sizing: border-box;
}
.history-item[hidden] { display: none !important; }
.history-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 7px 8px;
  margin: 0;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  background: transparent;
  box-sizing: border-box;
}
.history-item:hover {
  background: color-mix(in srgb, var(--text) 5%, transparent);
}
.history-item.is-active {
  background: color-mix(in srgb, var(--accent, #2563eb) 8%, var(--panel-solid, #fff));
}
.history-item.is-active .history-item-title {
  color: var(--text, #222);
}
.history-item-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.history-item-top {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.history-kind {
  flex: 0 0 auto;
  font-size: 10px;
  font-weight: 550;
  letter-spacing: 0.01em;
  text-transform: lowercase;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted, #64748b);
  max-width: 5.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-item-title {
  min-width: 0;
  font-size: 12px;
  font-weight: 550;
  color: var(--text, #222);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.history-item-meta {
  font-size: 11px;
  color: var(--muted, #6b7280);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-variant-numeric: tabular-nums;
  padding-left: 2px;
}
.history-item-meta .history-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px;
  color: var(--muted, #64748b);
}
.history-item-meta .doc-ver {
  padding: 0;
  background: transparent;
  color: var(--muted, #64748b);
}
.history-item-del {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted, #6b7280);
  width: 28px;
  height: 28px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  opacity: 0.55;
}
.history-item:hover .history-item-del,
.history-item.is-active .history-item-del {
  opacity: 1;
}
.history-item-del:hover {
  background: rgba(220, 38, 38, 0.12);
  color: #b91c1c;
}
.history-empty {
  margin: 0;
  font-size: 12px;
  color: var(--muted, #6b7280);
}
.dock-source-body[data-source-mode="board"] .board-editor-wrap {
  position: relative;
  margin: 10px 16px;
}
.dock-source-body .pill {
  height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: 11px;
  color: var(--muted, #64748b);
}
.dock-source-body .pill b { font-weight: 600; }
.dock-source-body .pill.ok { color: var(--muted, #64748b); border-color: transparent; }
.dock-source-body .dock-beta { display: none !important; }
.history-block { margin: 4px 16px 0; }


/* ——— State diagram UI (Cursor-like) ——— */
/* Leaf states only — not composite outer/inner shells */

/* Composite: outer shell rounded; inner content frame removed */


















/* Source dock: editor fills remaining height; History stays below. */
.dock-source-body > .board-editor-wrap {
  flex: 1 1 auto;
  min-height: 0;
}
.source-chars {
  position: absolute;
  right: 10px;
  bottom: 8px;
  padding: 0;
  font-size: 10.5px;
  line-height: 1;
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  color: color-mix(in srgb, var(--muted, #64748b) 88%, transparent);
  background: none;
  pointer-events: none;
  user-select: none;
}
.source-chars b {
  font-weight: 550;
  color: var(--muted, #64748b);
}
.dock-source-body #boardSource {
  min-height: 0;
  padding-bottom: 28px;
}

/* Keep editing controls left and account controls right. */
html[data-drawer-mode="board"] .top-float {
  left: 12px !important;
  right: 48px !important;
  width: auto !important;
}
html[data-drawer-mode="board"] .board-account {
  margin-left: auto;
  flex: 0 1 auto;
}
.history-head {
  justify-content: flex-start;
}
.history-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
@media (max-width: 820px) {
  html[data-drawer-mode="board"] .top-float {
    left: 6px !important;
    right: 42px !important;
  }
  .board-account-name {
    max-width: 6rem;
  }
  .board-account-chip {
    max-width: 11rem;
    padding-right: 8px;
  }
}

/* --- 04-source-lines.css --- */
.source-line-editor {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: row;
  align-items: stretch;
}
.source-gutter {
  flex: 0 0 auto;
  overflow: hidden;
  box-sizing: border-box;
  padding: 14px 0 28px;
  border-right: 1px solid color-mix(in srgb, var(--stroke) 80%, transparent);
  background: color-mix(in srgb, var(--canvas) 88%, var(--panel-solid));
  color: color-mix(in srgb, var(--muted, #64748b) 92%, transparent);
  font: 12.5px/1.55 var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  user-select: none;
  pointer-events: none;
}
.source-gutter-inner {
  min-height: 100%;
}
.source-gutter-line {
  box-sizing: border-box;
  padding: 0 8px 0 10px;
  min-width: 2.5ch;
}
.source-line-editor #boardSource {
  flex: 1 1 auto;
  width: auto;
  min-width: 0;
  min-height: 0;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}
.source-line-twin {
  position: absolute;
  left: -9999px;
  top: 0;
  height: 0;
  min-height: 0;
  overflow: hidden;
  visibility: hidden;
  pointer-events: none;
  resize: none;
}