/* Design tokens and layout adapted from the Pugflow web app so that the
   jsonantt studio matches its sidebar/canvas look and feel. */
:root {
  color-scheme: light;
  --page: #e8ecf0;
  --panel: #f1f3f5;
  --surface: #f8f9fa;
  --surface-soft: #e9edf1;
  --canvas: #c7cdd4;
  --canvas-dot: #aab4bf;
  --border: #d5dbe2;
  --border-strong: #bec8d3;
  --text: #243b53;
  --heading: #102a43;
  --muted: #576a7d;
  --faint: #6b7d8f;
  --accent: #2e6ba7;
  --accent-hover: #245886;
  --danger: #c2413d;
  --danger-soft: #fff1f0;
  --code-bg: #edf1f5;
  --source-bg: #ffffff;
  --selection: rgba(46, 107, 167, .22);
  --shadow: rgba(16, 42, 67, .12);
  color: var(--text);
  background: var(--page);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0f1720;
  --panel: #17212b;
  --surface: #1c2834;
  --surface-soft: #101922;
  --canvas: #0c141b;
  --canvas-dot: #344554;
  --border: #344452;
  --border-strong: #465a6b;
  --text: #d6e2ec;
  --heading: #f4f8fb;
  --muted: #a4b6c5;
  --faint: #8398aa;
  --accent: #70afe7;
  --accent-hover: #8fc3ef;
  --danger: #f28b82;
  --danger-soft: #3a2224;
  --code-bg: #223241;
  --source-bg: var(--surface-soft);
  --selection: rgba(112, 175, 231, .28);
  --shadow: rgba(0, 0, 0, .38);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { min-width: 900px; min-height: 100vh; margin: 0; }
button, select, textarea, input { font: inherit; }
button, select { cursor: pointer; }

/* ---------------------------------------------------------------- toolbar */
header {
  position: relative;
  z-index: 40;
  height: 42px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
nav { display: flex; align-items: center; gap: 8px; }
.global-actions { min-width: 0; flex: 1; gap: 2px; }
.toolbar-menu { position: relative; height: 30px; margin: 0; padding: 0; border: 0; }
.toolbar-menu > summary {
  display: flex;
  height: 30px;
  align-items: center;
  padding: 0 9px;
  border: 0;
  border-radius: 5px;
  color: var(--text);
  background: transparent;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.toolbar-menu > summary::-webkit-details-marker { display: none; }
.toolbar-menu > summary:hover, .toolbar-menu[open] > summary { color: var(--heading); background: var(--code-bg); }
.toolbar-popover { position: absolute; z-index: 50; top: calc(100% + 4px); left: 0; width: 210px; padding: 5px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--panel); box-shadow: 0 10px 28px var(--shadow); }
.toolbar-popover > strong { display: block; padding: 7px 8px 4px; color: var(--faint); font-size: 8px; letter-spacing: .12em; }
.toolbar-popover > button, .toolbar-popover > label, .toolbar-popover > a { display: flex; width: 100%; min-height: 30px; align-items: center; gap: 8px; padding: 7px 8px; border: 0; border-radius: 5px; color: var(--text); background: transparent; font-size: 11px; text-align: left; text-decoration: none; }
.toolbar-popover > button:hover, .toolbar-popover > label:hover, .toolbar-popover > a:hover { color: var(--heading); background: var(--code-bg); }
.toolbar-popover select { margin-left: auto; padding: 3px 5px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font-size: 11px; }
.about-menu { margin-right: 2px; padding-right: 10px; border-right: 1px solid var(--border); }
.about-menu > summary { padding-left: 2px; font-size: 13px; letter-spacing: -.01em; }
.about-version { margin: 0; padding: 5px 8px 8px; color: var(--muted); font-size: 10px; }
.about-version span { color: var(--heading); font-weight: 650; }
.menu-separator { display: block; height: 1px; margin: 5px 3px; background: var(--border); }
.toolbar-divider { width: 1px; height: 20px; margin: 0 5px; background: var(--border); }
.icon-tool { display: grid; width: 30px; height: 30px; place-items: center; padding: 0; border: 0; border-radius: 5px; color: var(--muted); background: transparent; }
.icon-tool:hover, .icon-tool:focus-visible { color: var(--heading); background: var(--code-bg); outline: none; }
.icon-tool svg, .theme-toggle svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.theme-toggle small { margin-left: auto; color: var(--faint); font-size: 9px; font-weight: 500; text-transform: capitalize; }
.theme-toggle .theme-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-moon { display: inline-flex; }
.menu-setting { justify-content: space-between; cursor: pointer; }
.menu-setting input { margin: 0; accent-color: var(--accent); }

/* ----------------------------------------------------------------- layout */
main {
  --panel-width: 430px;
  --layers-open-width: 250px;
  --layers-width: var(--layers-open-width);
  --graph-resizer-width: 9px;
  position: relative;
  height: calc(100vh - 42px);
  display: grid;
  grid-template-columns: var(--panel-width) 9px minmax(0, 1fr) var(--graph-resizer-width) var(--layers-width);
  transition: grid-template-columns .2s ease;
}
main.source-collapsed { grid-template-columns: 0 0 minmax(0, 1fr) var(--graph-resizer-width) var(--layers-width); }
main.layers-collapsed { --layers-width: 0px; --graph-resizer-width: 0px; }
#source-panel { display: flex; min-height: 0; flex-direction: column; padding: 22px 20px 16px; border-right: 1px solid var(--border); background: var(--panel); }
main.source-collapsed #source-panel { visibility: hidden; overflow: hidden; padding-inline: 0; border-right: 0; pointer-events: none; }
.source-toggle {
  position: absolute;
  z-index: 7;
  top: 50%;
  left: calc(var(--panel-width) - 13px);
  width: 27px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  color: var(--accent);
  background: var(--panel);
  box-shadow: 0 3px 10px var(--shadow);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  translate: 0 -50%;
  transition: left .2s ease, background .12s ease;
}
.source-toggle:hover, .source-toggle:focus-visible { border-color: var(--accent); background: var(--code-bg); outline: none; }
main.source-collapsed .source-toggle { left: 8px; }
.panel-toggle .toggle-label { display: none; writing-mode: vertical-rl; rotate: 180deg; color: var(--muted); font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
main.source-collapsed .source-toggle, main.layers-collapsed .layers-toggle { width: 29px; height: 82px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; }
main.source-collapsed .source-toggle .toggle-label, main.layers-collapsed .layers-toggle .toggle-label { display: inline; }
main.source-collapsed .source-toggle .toggle-arrow, main.layers-collapsed .layers-toggle .toggle-arrow { font-size: 17px; }
.layers-toggle {
  position: absolute;
  z-index: 7;
  top: 50%;
  right: calc(var(--layers-width) - 13px);
  width: 27px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  color: var(--accent);
  background: var(--panel);
  box-shadow: 0 3px 10px var(--shadow);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  translate: 0 -50%;
  transition: right .2s ease, background .12s ease;
}
.layers-toggle:hover, .layers-toggle:focus-visible { border-color: var(--accent); background: var(--code-bg); outline: none; }
main.layers-collapsed .layers-toggle { position: fixed; z-index: 30; top: calc(50vh + 35px); right: 8px; opacity: 1; background-color: var(--panel); }
.layers-panel { min-width: 0; min-height: 0; overflow-x: hidden; overflow-y: auto; padding: 14px 16px 16px; border-left: 1px solid var(--border); background: var(--panel); }
.layers-title small { color: var(--accent); font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.layers-title h2 { margin: 2px 0 0; color: var(--heading); font-size: 17px; }
.browser-section { margin-top: 14px; border-top: 1px solid var(--border); }
.browser-section > summary { display: flex; align-items: center; gap: 6px; padding: 10px 1px 7px; color: var(--heading); font-size: 11px; font-weight: 750; cursor: pointer; list-style: none; }
.browser-section > summary::-webkit-details-marker { display: none; }
.browser-section > summary::before { content: "›"; flex: 0 0 auto; color: var(--faint); font-size: 15px; font-weight: 500; line-height: 10px; transition: rotate .12s ease; }
.browser-section[open] > summary::before { rotate: 90deg; }
.browser-section > summary small { margin-left: auto; color: var(--faint); font: 10px Consolas, monospace; }
.layers-list, .item-list { display: grid; gap: 5px; }
.tree-item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  align-items: center;
  gap: 7px;
  width: 100%;
  min-width: 0;
  padding: 7px 8px;
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  background: var(--surface);
  text-align: left;
}
.tree-item:hover, .tree-item:focus-visible { border-color: var(--accent); background: var(--code-bg); outline: none; }
.tree-item.selected { border-color: var(--accent); background: var(--code-bg); box-shadow: inset 0 0 0 1px var(--accent); }
.tree-swatch { width: 10px; height: 10px; border: 1px solid var(--border-strong); border-radius: 3px; }
.tree-copy { display: grid; min-width: 0; gap: 2px; }
.tree-copy strong { overflow: hidden; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.tree-copy small { overflow: hidden; color: var(--faint); font: 9px Consolas, monospace; text-overflow: ellipsis; white-space: nowrap; }
.layers-empty { margin: 0; padding: 12px; border: 1px dashed var(--border); border-radius: 7px; color: var(--faint); font-size: 10px; text-align: center; }
.panel-resizer, .graph-panel-resizer {
  position: relative;
  z-index: 5;
  cursor: col-resize;
  touch-action: none;
  background: var(--page);
  outline: none;
}
main.source-collapsed .panel-resizer { visibility: hidden; pointer-events: none; }
main.layers-collapsed .graph-panel-resizer { visibility: hidden; pointer-events: none; }
.panel-resizer::after, .graph-panel-resizer::after { content: ""; position: absolute; inset: 0 3px; border-radius: 2px; background: var(--border-strong); transition: inset .12s, background .12s; }
.panel-resizer:hover::after, .panel-resizer:focus-visible::after, .graph-panel-resizer:hover::after, .graph-panel-resizer:focus-visible::after, body.resizing-panel .panel-resizer::after, body.resizing-graphs .graph-panel-resizer::after { inset: 0 2px; background: var(--accent); }
body.resizing-panel, body.resizing-graphs { cursor: col-resize; user-select: none; }

/* ----------------------------------------------------------- source panel */
.panel-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.source-tabs { display: flex; gap: 2px; margin: 2px 0 8px; border-bottom: 1px solid var(--border); }
.source-tabs button { padding: 7px 11px 6px; border: 0; border-bottom: 2px solid transparent; border-radius: 5px 5px 0 0; color: var(--muted); background: transparent; font: 600 11px/1.2 Consolas, monospace; }
.source-tabs button.active { border-bottom-color: var(--accent); color: var(--heading); background: var(--surface-soft); }
h1, h2 { margin: 3px 0 0; color: var(--heading); letter-spacing: -.02em; }
h1 { font-size: 20px; }
h2 { font-size: 18px; }
code { padding: 2px 4px; border-radius: 3px; color: var(--accent); background: var(--code-bg); font-family: Consolas, monospace; }
.editor-shell {
  position: relative;
  width: 100%;
  flex: 1;
  min-height: 260px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--source-bg);
}
.editor-shell::before {
  content: "";
  position: absolute;
  z-index: 2;
  inset: 0 auto 0 0;
  width: 43px;
  pointer-events: none;
  border-right: 1px solid var(--border);
  background: var(--source-bg);
}
.editor-shell:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--selection); }
.line-numbers {
  position: absolute;
  z-index: 3;
  top: 14px;
  left: 0;
  width: 43px;
  pointer-events: none;
  color: var(--faint);
  font: 10px/20px Consolas, "SFMono-Regular", monospace;
  text-align: right;
  user-select: none;
}
.line-numbers span { display: block; height: 20px; padding-right: 9px; }
#source {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 14px 38px 14px 52px;
  border: 0;
  overflow: auto;
  overscroll-behavior: none;
  outline: none;
  resize: none;
  white-space: pre;
  color: var(--text);
  caret-color: var(--text);
  background: transparent;
  font-family: Consolas, "SFMono-Regular", "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 20px;
  font-variant-ligatures: none;
  tab-size: 2;
}
#source::selection { background: var(--selection); }
.editor-shell #source { color: transparent; caret-color: var(--text); }
.editor-shell #source::selection { background: var(--selection); }
.highlight-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
  margin: 0;
  padding: 14px 38px 14px 52px;
  overflow: visible;
  pointer-events: none;
  white-space: pre;
  color: var(--text);
  font-family: Consolas, "SFMono-Regular", "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 20px;
  font-variant-ligatures: none;
  tab-size: 2;
}
.highlight-layer code { padding: 0; border: 0; border-radius: 0; color: inherit; background: transparent; font: inherit; }
.highlight-layer .tok-key { color: #905; }
.highlight-layer .tok-string { color: #690; }
.highlight-layer .tok-number { color: #07a; }
.highlight-layer .tok-literal { color: #7d55c7; }
:root[data-theme="dark"] .highlight-layer .tok-key { color: #f48fb1; }
:root[data-theme="dark"] .highlight-layer .tok-string { color: #a5d6a7; }
:root[data-theme="dark"] .highlight-layer .tok-number { color: #90caf9; }
:root[data-theme="dark"] .highlight-layer .tok-literal { color: #ce93d8; }
.editor-hint { display: flex; min-height: 16px; align-items: center; justify-content: space-between; gap: 8px; margin: 6px 2px 0; color: var(--faint); font-size: 9px; }
.editor-hint-actions { display: flex; align-items: center; gap: 9px; margin-left: auto; white-space: nowrap; }
.editor-hint kbd { padding: 1px 3px; border: 1px solid var(--border); border-bottom-color: var(--border-strong); border-radius: 3px; color: var(--muted); background: var(--surface); font: 8px Consolas, monospace; }
.status { min-width: 0; height: auto; margin: 0; padding: 0; overflow: hidden; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.status.ready { color: #478168; }
.status.error { color: var(--danger); }

/* ---------------------------------------------------------------- canvas */
.preview { position: relative; z-index: 0; display: flex; min-width: 0; min-height: 0; flex-direction: column; padding: 24px; }
.preview-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.canvas-tabs { display: flex; flex-wrap: wrap; gap: 2px; border-bottom: 1px solid var(--border); }
.canvas-tabs button { padding: 7px 13px 6px; border: 0; border-bottom: 2px solid transparent; border-radius: 5px 5px 0 0; color: var(--muted); background: transparent; font: 600 11px/1.2 Consolas, monospace; }
.canvas-tabs button:hover { color: var(--heading); background: var(--code-bg); }
.canvas-tabs button.active { border-bottom-color: var(--accent); color: var(--heading); background: var(--surface-soft); }
.preview-meta { display: flex; align-items: center; gap: 8px; color: var(--faint); font-size: 10px; }
.preview-title { flex-wrap: wrap; }
.view-options, #burn-controls, #gantt-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.view-options label { display: flex; align-items: center; gap: 5px; margin-bottom: 10px; color: var(--muted); font-size: 11px; }
.view-options input, .view-options select { min-width: 0; padding: 4px; border: 1px solid var(--border); color: var(--text); background: var(--surface); font-size: 11px; }
.view-options input { width: 90px; }
.view-options input[type="checkbox"] { width: 13px; height: 13px; flex: none; margin: 0; padding: 0; accent-color: var(--accent); }
.burn-empty { padding: 24px; color: var(--text); background: var(--panel); }
.zoom-controls { display: flex; align-items: stretch; gap: 0; margin-left: 5px; padding: 2px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-soft); }
.zoom-controls button { min-width: 28px; padding: 3px 7px; border: 0; border-radius: 5px; color: var(--muted); background: transparent; font-size: 11px; }
.zoom-controls button:hover { color: var(--heading); background: var(--panel); }
.zoom-controls select { min-width: 64px; padding: 3px 5px; border: 0; outline: 0; color: var(--heading); background: var(--surface-soft); font: 650 11px/1.2 Consolas, monospace; text-align: center; }
.zoom-controls select option { color: var(--text); background: var(--surface); }
.zoom-controls #zoom-fit { margin-left: 2px; padding-inline: 9px; border-left: 1px solid var(--border); border-radius: 0 5px 5px 0; font-size: 11px; font-weight: 750; }
.canvas-shell {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  overscroll-behavior: contain;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  background-color: var(--canvas);
  background-image: radial-gradient(var(--canvas-dot) .7px, transparent .7px);
  background-size: 16px 16px;
  box-shadow: 0 10px 30px var(--shadow);
}
#canvas { display: grid; width: 100%; height: 100%; min-height: 0; overflow: auto; padding: 22px; place-items: start center; }
#canvas > svg { display: block; max-width: none; border-radius: 0; background: #fff; box-shadow: 0 4px 18px var(--shadow); transform-origin: top center; }
#canvas .table-wrap { transform-origin: top center; }
#canvas.preview-invalid > svg { opacity: .3; filter: grayscale(.65); }
#canvas.preview-invalid > .table-wrap { opacity: .3; filter: grayscale(.65); }
#canvas.preview-invalid::after {
  content: attr(data-error);
  position: absolute;
  z-index: 4;
  top: 18px;
  left: 50%;
  translate: -50% 0;
  max-width: 80%;
  padding: 8px 12px;
  border: 1px solid var(--danger);
  border-radius: 7px;
  color: var(--danger);
  background: var(--panel);
  box-shadow: 0 5px 18px var(--shadow);
  font-size: 11px;
  font-weight: 750;
}
.canvas-toast { position: absolute; z-index: 10; right: 16px; bottom: 16px; translate: 0 5px; padding: 7px 10px; border: 1px solid var(--border); border-radius: 7px; color: var(--text); background: var(--panel); box-shadow: 0 6px 18px var(--shadow); font-size: 10px; font-weight: 650; opacity: 0; pointer-events: none; transition: opacity .18s ease, translate .18s ease; }
.canvas-toast.show { translate: 0; opacity: 1; }
.canvas-toast.show::before { content: "✓"; margin-right: 6px; color: var(--accent); }

/* interactive canvas elements */
#canvas svg .selectable { cursor: pointer; }
#canvas svg .selectable:hover .hit-shape { stroke: var(--accent); stroke-width: 1.5; }
#canvas svg .selected-element .hit-shape { stroke: var(--accent); stroke-width: 2; }
#canvas svg .selected-element { filter: drop-shadow(0 0 3px var(--accent)); }
#canvas svg .row-label.selected-label { fill: var(--accent); font-weight: 700; }

/* ------------------------------------------------------------- inspector */
.canvas-inspector {
  position: absolute;
  z-index: 18;
  top: 12px;
  right: 12px;
  width: 268px;
  max-width: calc(100% - 24px);
  max-height: calc(100% - 24px);
  height: fit-content;
  overflow: hidden;
  overscroll-behavior: contain;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  background: var(--panel);
  box-shadow: 0 8px 25px var(--shadow);
  flex-direction: column;
}
.canvas-inspector:not([hidden]) { display: flex; }
.inspector-drag-handle { cursor: grab; touch-action: none; }
.inspector-drag-handle.dragging { cursor: grabbing; }
.inspector-drag-handle { z-index: 3; display: flex; flex: 0 0 auto; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 9px 8px 12px; border-bottom: 1px solid var(--border); color: var(--heading); background: var(--surface-soft); font-size: 11px; font-weight: 750; user-select: none; }
#inspector-content { min-height: 0; overflow: auto; padding: 3px 13px 13px; overscroll-behavior: contain; scrollbar-gutter: stable; }
.canvas-inspector label, .canvas-inspector .inspector-field { display: grid; gap: 3px; margin: 7px 0; color: var(--muted); font-size: 10px; }
.inspector-field > span { color: var(--muted); }
.canvas-inspector input, .canvas-inspector select, .canvas-inspector textarea { width: 100%; min-height: 29px; padding: 4px 6px; border: 1px solid var(--border); border-radius: 5px; color: var(--text); background: var(--surface); font: 11px Consolas, monospace; }
.canvas-inspector textarea { resize: vertical; line-height: 1.4; }
.canvas-inspector input:focus-visible, .canvas-inspector select:focus-visible, .canvas-inspector textarea:focus-visible { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--selection); }
.inspector-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.milestone-dates { display: grid; gap: 6px; min-width: 0; }
.milestone-date-list { display: grid; gap: 6px; margin: 0; padding: 0; list-style: none; }
.milestone-date-list li { display: grid; grid-template-columns: 14px minmax(0, 1fr) 25px; align-items: center; gap: 4px; min-width: 0; }
.milestone-date-list li > button { padding: 5px 0; font-size: 14px; }
.inspector-switch { display: flex !important; width: fit-content; flex-direction: row; align-items: center; gap: 6px; padding: 2px 0; }
.inspector-switch input[type="checkbox"] { appearance: none; width: 25px !important; min-height: 14px; height: 14px; margin: 0; padding: 0; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--surface); cursor: pointer; transition: border-color .15s ease, background .15s ease; }
.inspector-switch input[type="checkbox"]::before { content: ""; display: block; width: 8px; height: 8px; margin: 2px; border-radius: 50%; background: var(--muted); transition: translate .15s ease, background .15s ease; }
.inspector-switch input[type="checkbox"]:checked { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 28%, var(--surface)); }
.inspector-switch input[type="checkbox"]:checked::before { translate: 11px 0; background: var(--accent); }
.inspector-empty { margin: 5px 0 0; color: var(--faint); font-size: 10px; line-height: 1.4; }
.inspector-help { display: block; margin: -2px 0 8px; color: var(--faint); font-size: 9px; line-height: 1.4; }
.canvas-inspector button { flex: 1; padding: 6px 8px; border: 1px solid var(--border); border-radius: 5px; color: var(--text); background: var(--surface); font-size: 10px; }
.canvas-inspector button:hover { border-color: var(--accent); background: var(--code-bg); }
.canvas-inspector button.danger { color: var(--danger); }
.canvas-inspector button.danger:hover { border-color: var(--danger); background: var(--danger-soft); }
.inspector-footer { display: flex; flex: 0 0 auto; gap: 6px; padding: 9px 13px; border-top: 1px solid var(--border); background: var(--surface-soft); }
.inspector-footer button { flex: 1; margin: 0; }

/* --------------------------------------------------------- relationships */
.inspector-relations { margin-top: 10px; border-top: 1px solid var(--border); color: var(--muted); font-size: 10px; }
.inspector-relations > summary { display: flex; align-items: center; gap: 6px; padding: 10px 0 6px; color: var(--heading); font-size: 11px; font-weight: 700; cursor: pointer; list-style: none; }
.inspector-relations > summary::-webkit-details-marker { display: none; }
.inspector-relations > summary::before { content: "›"; color: var(--faint); font-size: 15px; line-height: 10px; transition: rotate .12s ease; }
.inspector-relations[open] > summary::before { rotate: 90deg; }
.relation-group { display: grid; gap: 5px; margin: 6px 0 10px; }
.relation-group > strong { color: var(--muted); font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.relation-chip {
  display: flex !important;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  background: var(--surface);
  font-size: 10px;
  text-align: left;
}
.relation-chip:hover { border-color: var(--accent); background: var(--code-bg); }
.relation-chip > span { min-width: 0; overflow: hidden; font-weight: 650; text-overflow: ellipsis; white-space: nowrap; }
.relation-chip > small { margin-left: auto; color: var(--faint); font: 9px Consolas, monospace; white-space: nowrap; }

/* -------------------------------------------------------------- table mode */
.table-wrap {
  max-width: none;
  padding: 3% 3% 5%;
  background: #fff;
  border-radius: 0;
  box-shadow: 0 4px 18px var(--shadow);
  box-sizing: border-box;
}
.table-preview-title { margin: 0 0 24px; color: #111; font: 700 calc(var(--table-font-size) + 4px)/1.2 "DejaVu Sans", sans-serif; text-align: center; }
.burn-matrix-wrap { padding: 9.6px; }
.burn-matrix th, .burn-matrix td { white-space: nowrap; overflow: visible; font-size: var(--table-font-size); vertical-align: middle; }
.burn-matrix-wrap .table-preview-title { margin-bottom: 24px; }
.studio-table { width: 100%; border-collapse: collapse; color: #111; font: var(--table-font-size)/1.35 "DejaVu Sans", sans-serif; table-layout: auto; }
.studio-table thead th {
  height: calc(var(--table-font-size) * 1.95);
  padding: 0 1.4%;
  border: 1px solid var(--table-grid-color);
  color: #111;
  background: color-mix(in srgb, var(--table-band-color) 92%, #000 8%);
  font-size: var(--table-font-size);
  font-weight: 700;
  text-align: left;
}
.studio-table td { min-height: calc(var(--table-font-size) * 1.5); padding: calc(var(--table-font-size) * .25) 1.4%; border: 1px solid var(--table-grid-color); color: #111; vertical-align: middle; }
.studio-table tbody tr:nth-child(even) { background: var(--table-band-color); }
.studio-table tbody tr:last-child td { border-bottom: 0; }
.studio-table .table-row { cursor: pointer; }
.studio-table .table-row:hover td { background: var(--code-bg); }
.studio-table .table-row.selected-row { outline: 2px solid var(--accent); outline-offset: -2px; }
.studio-table .table-row.selected-row td { background: var(--selection); }
.studio-table { position: relative; }
.studio-table .cell-with-gutter { padding-left: 2.4%; }
.studio-table .table-gutter { position: absolute; left: 0; width: 1.8%; height: 100%; display: grid; place-items: center; padding: 0; border: 0; pointer-events: none; }
.studio-table .table-row { position: relative; }
.studio-table .cell-with-gutter .table-gutter { top: 0; }
.table-color-bar { display: block; justify-self: start; width: 55.5556%; height: 100%; margin: 0; border: 0; border-radius: 0; }
.table-milestone-marker { display: block; flex: none; max-width: none; margin: 0 auto; overflow: visible; border: 0; background: transparent; box-shadow: none; }
.studio-table .cell-task { color: #111; font: inherit; white-space: nowrap; }
.studio-table .cell-bold { font-weight: 700; }
.studio-table .milestone-row td { color: #111; }
.studio-table .milestone-row td.cell-name { color: #111; }
.table-empty { padding: 26px 10px !important; color: var(--faint) !important; text-align: center; }
.studio-table tfoot td { border-top: 2px solid var(--border-strong); border-bottom: 0; color: var(--heading); background: var(--surface-soft); font-weight: 700; }

/* ---------------------------------------------------------- chart settings */
#settings-dialog {
  width: min(560px, calc(100vw - 48px));
  max-height: calc(100vh - 96px);
  margin: auto;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  color: var(--text);
  background: var(--panel);
  box-shadow: 0 24px 60px var(--shadow);
}
#export-dialog { width: min(390px, calc(100vw - 48px)); margin: auto; padding: 0; border: 1px solid var(--border-strong); border-radius: 12px; color: var(--text); background: var(--panel); box-shadow: 0 24px 60px var(--shadow); }
#export-dialog::backdrop { background: rgba(15, 23, 32, .45); }
.export-content { padding: 12px 18px 18px; }
.export-note { margin: 10px 0 16px; color: var(--faint); font-size: 10px; line-height: 1.45; }
#export-error { color: var(--danger); font-size: 12px; line-height: 1.5; overflow-wrap: anywhere; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }
.dialog-actions button { padding: 7px 14px; border: 1px solid var(--border); border-radius: 6px; color: var(--text); background: var(--surface); font-size: 10px; font-weight: 650; }
.dialog-actions button.primary { border-color: var(--accent); color: #fff; background: var(--accent); }
.dialog-actions button:disabled { opacity: .55; cursor: wait; }
#settings-dialog::backdrop { background: rgba(15, 23, 32, .45); }
.settings-dialog-header {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-soft);
}
.settings-dialog-header h2 { margin: 0; font-size: 15px; }
.settings-dialog-header button { display: grid; width: 28px; height: 28px; place-items: center; padding: 0; border: 0; border-radius: 6px; color: var(--muted); background: transparent; font-size: 13px; }
.settings-dialog-header button:hover { color: var(--heading); background: var(--code-bg); }
.settings-content { max-height: calc(100vh - 160px); overflow-y: auto; padding: 6px 18px 18px; }
.settings-content h3 { margin: 16px 0 2px; padding-top: 12px; border-top: 1px solid var(--border); color: var(--heading); font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.settings-content h3:first-child { margin-top: 6px; padding-top: 0; border-top: 0; }
.settings-field { display: grid; gap: 3px; margin: 8px 0; color: var(--muted); font-size: 10px; }
.settings-field input, .settings-field select, .settings-field textarea { width: 100%; min-height: 29px; padding: 4px 7px; border: 1px solid var(--border); border-radius: 5px; color: var(--text); background: var(--surface); font: 11px Consolas, monospace; }
.setting-control { display: flex; align-items: center; gap: 6px; min-width: 0; }
.setting-control > input, .setting-control > textarea, .setting-control > select { min-width: 0; flex: 1; }
.setting-control > .date-field { min-width: 0; flex: 1; }
.setting-control > input[type="checkbox"], .setting-control > input[type="color"] { flex: none; width: 30px; }
.setting-control > textarea { resize: vertical; }
.settings-field input:focus-visible, .settings-field select:focus-visible { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--selection); }
.settings-field input[type="checkbox"] { width: auto; min-height: 0; justify-self: start; accent-color: var(--accent); }
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.settings-help { display: block; margin: -2px 0 6px; color: var(--faint); font-size: 9px; line-height: 1.4; }
.settings-empty { margin: 18px 0; color: var(--faint); font-size: 11px; text-align: center; }
.color-setting { display: flex; align-items: center; gap: 6px; }
.color-setting input[type="color"] { flex: 1; min-width: 0; height: 29px; padding: 2px 3px; cursor: pointer; }
.color-clear { flex: 0 0 auto; padding: 4px 8px; border: 1px solid var(--border); border-radius: 5px; color: var(--muted); background: var(--surface); font-size: 9px; }
.color-clear:hover { border-color: var(--accent); color: var(--heading); background: var(--code-bg); }

/* ------------------------------------------------------------- date picker */
#compare-controls { padding: 8px 12px; border-bottom: 1px solid var(--border); background: var(--panel); }
#compare-dialog { width: min(820px, calc(100vw - 40px)); max-height: calc(100vh - 40px); padding: 0; border: 1px solid var(--border); background: var(--panel); color: var(--text); }
#append-dialog, #include-dialog { width: min(700px, calc(100vw - 40px)); max-height: calc(100vh - 40px); padding: 0; border: 1px solid var(--border); background: var(--panel); color: var(--text); }
#append-dialog::backdrop, #include-dialog::backdrop { background: rgba(15, 23, 32, .45); }
#include-status { overflow-wrap: anywhere; }
.append-content { display: grid; gap: 12px; padding: 14px; font-size: 12px; }
#append-list { display: grid; max-height: 40vh; overflow: auto; }
.append-file { display: flex; align-items: center; gap: 6px; padding: 5px; border-bottom: 1px solid var(--border); }
.append-file label { flex: 1; display: flex; align-items: center; gap: 6px; min-width: 0; overflow-wrap: anywhere; }
.append-file button, #append-placement { padding: 4px 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text); }
#append-status { margin: 0; color: var(--muted); overflow-wrap: anywhere; }
#compare-dialog::backdrop { background: rgba(15, 23, 32, .45); }
#compare-controls > label { display: flex; align-items: center; gap: 6px; margin: 8px 0 14px; font-size: 12px; }
#compare-indicator { padding: 6px 12px; text-align: left; border: 0; border-bottom: 1px solid var(--border); background: var(--surface-soft); color: var(--accent); font-size: 11px; }
#local-file-dialog { width: min(640px, calc(100vw - 40px)); max-height: calc(100vh - 40px); padding: 0; border: 1px solid var(--border); color: var(--text); background: var(--panel); }
#local-file-dialog::backdrop { background: rgba(15, 23, 32, .45); }
.local-file-content { display: grid; gap: 10px; padding: 14px; font-size: 12px; }
#local-file-path { width: 100%; padding: 7px; border: 1px solid var(--border); background: var(--surface); color: var(--text); }
#local-file-list { display: grid; max-height: 45vh; overflow: auto; }
#local-file-list button { padding: 7px; text-align: left; border: 0; background: var(--surface); color: var(--text); overflow-wrap: anywhere; }
#local-file-list button:hover { background: var(--code-bg); }
#local-file-list button[aria-pressed="true"] { background: var(--selection); box-shadow: inset 3px 0 var(--accent); font-weight: 650; }
#compare-current-file, #compare-baseline-file { margin: 5px 0; font-size: 11px; overflow-wrap: anywhere; color: var(--text); }
.compare-dialog-actions { position: sticky; bottom: 0; margin-top: 14px; padding: 10px 0 4px; background: var(--panel); border-top: 1px solid var(--border); }
.compare-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.compare-actions button, .compare-actions select { padding: 5px 8px; border: 1px solid var(--border); color: var(--text); background: var(--surface); font-size: 11px; }
.compare-actions label { color: var(--muted); font-size: 11px; }
.compare-actions button:disabled { opacity: .55; cursor: not-allowed; }
#compare-status { margin: 6px 0 0; font-size: 11px; color: var(--muted); overflow-wrap: anywhere; }
#compare-revisions { width: 100%; margin-top: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: 11px/1.5 monospace; }
.date-field { position: relative; display: block; width: 100%; min-width: 0; }
.date-field input { width: 100%; min-width: 0; padding-right: 30px; }
.date-trigger { position: absolute; top: 1px; right: 1px; width: 27px; height: 27px; min-height: 0; padding: 5px; border: 0; border-left: 1px solid var(--border); border-radius: 0 4px 4px 0; color: var(--muted); background: transparent; line-height: 1; }
.date-trigger svg { display: block; width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.date-trigger:hover { border-color: var(--accent); background: var(--code-bg); }
.date-picker {
  position: fixed;
  margin: 0;
  inset: auto;
  z-index: 100;
  width: 216px;
  max-width: calc(100vw - 16px);
  padding: 10px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--panel);
  box-shadow: 0 12px 30px var(--shadow);
}
.date-picker-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 7px; }
.date-picker-header strong { color: var(--heading); font-size: 11px; }
.date-picker-header button { width: 24px; height: 24px; padding: 0; border: 0; border-radius: 5px; color: var(--muted); background: transparent; font-size: 14px; }
.date-picker-header button:hover { color: var(--heading); background: var(--code-bg); }
.date-picker-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 2px; }
.date-picker-grid > * { min-width: 0; }
.date-picker-weekday { color: var(--faint); font-size: 8px; font-weight: 700; text-align: center; text-transform: uppercase; }
.date-picker-day { display: grid; width: 100%; min-width: 0; min-height: 24px; place-items: center; padding: 0; border: 0; border-radius: 5px; color: var(--text); background: transparent; font-size: 10px; }
.date-picker-day:hover { background: var(--code-bg); }
.date-picker-day.today { color: var(--accent); font-weight: 700; }
.date-picker-day.selected { color: #fff; background: var(--accent); }
.date-picker-footer { display: flex; justify-content: flex-end; margin-top: 8px; }
.date-picker-footer button { padding: 4px 10px; border: 1px solid var(--border); border-radius: 5px; color: var(--muted); background: var(--surface); font-size: 9px; }
.date-picker-footer button:hover { border-color: var(--accent); color: var(--heading); background: var(--code-bg); }