:root {
  color-scheme: light;
  --bg: #f3f4f8;
  --surface: #ffffff;
  --surface-soft: #f3f4f8;
  --line: #d9dbe5;
  --line-strong: #c8cbd7;
  --text: #1e2029;
  --muted: #717586;
  --accent: #655ce7;
  --accent-strong: #5147da;
  --accent-soft: #eeecff;
  --accent-contrast: #ffffff;
  --success: #28a879;
  --chrome: #fafafd;
  --field: #fbfbfd;
  --editor-bg: #22242d;
  --editor-text: #f1f1f5;
  --canvas-bg: #ffffff;
  --canvas-dot: #d9dbe5;
  --floating-bg: rgba(255,255,255,.94);
  --shadow: 0 10px 28px rgba(39, 41, 58, .08);
  --radius: 9px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #12131a;
  --surface: #1b1d27;
  --surface-soft: #222531;
  --line: #303442;
  --line-strong: #44495b;
  --text: #f4f3f9;
  --muted: #9da2b3;
  --accent: #9b91ff;
  --accent-strong: #b1a9ff;
  --accent-soft: #302c52;
  --chrome: #171923;
  --field: #191b24;
  --editor-bg: #101119;
  --editor-text: #eeeef6;
  --canvas-bg: #181a22;
  --canvas-dot: #323644;
  --floating-bg: rgba(27,29,39,.96);
  --shadow: 0 18px 60px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; min-height: 100vh; background: var(--bg); color: var(--text); }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
.app-shell { min-height: 100vh; display: grid; grid-template-rows: 52px 62px minmax(0, 1fr) 27px; }
.titlebar { position: relative; z-index: 20; display: flex; align-items: center; gap: 20px; padding: 0 16px; border-bottom: 1px solid var(--line); background: var(--surface); }
.brand-lockup { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 30px; border-radius: 5px; color: #fff; background: #252731; font: 800 12px ui-monospace, SFMono-Regular, Consolas, monospace; box-shadow: inset 3px 0 0 var(--accent); }
.brand-lockup div { display: grid; gap: 1px; }
.brand-lockup strong { font: 800 11px ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .07em; }
.brand-lockup small { color: var(--muted); font: 9px ui-monospace, SFMono-Regular, Consolas, monospace; }
.titlebar-actions { position: relative; margin-left: auto; display: flex; align-items: center; gap: 9px; }
.save-state { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 11px; }
.save-state i, .status-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--success); }
.save-state.is-dirty i { background: #e0a126; }
.button, .icon-button, .text-button { border: 0; background: none; transition: border-color .16s ease, background .16s ease, color .16s ease, box-shadow .16s ease, transform .16s ease; }
.button:focus-visible, .icon-button:focus-visible, .text-button:focus-visible, .step:focus-visible, .outline-item:focus-visible, .segmented button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.icon-button { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 5px; background: var(--surface-soft); color: var(--muted); box-shadow: inset 0 1px 0 color-mix(in srgb, var(--text) 7%, transparent); }
.icon-button:hover { color: var(--accent-strong); border-color: color-mix(in srgb, var(--accent) 58%, var(--line)); background: var(--accent-soft); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 34px; padding: 0 14px; border-radius: 5px; border: 1px solid var(--line); background: var(--surface); font: 700 10px ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .015em; box-shadow: inset 0 1px 0 color-mix(in srgb, var(--text) 7%, transparent); }
.button:hover { transform: translateY(-1px); border-color: var(--line-strong); background: var(--surface-soft); }
.button:active { transform: translateY(0); box-shadow: inset 0 2px 5px rgba(0,0,0,.12); }
.button-primary { color: var(--accent-contrast); border-color: var(--accent-strong); background: var(--accent); box-shadow: inset 0 1px 0 rgba(255,255,255,.22), 0 4px 12px color-mix(in srgb, var(--accent) 24%, transparent); }
.button-primary:hover { color: var(--accent-contrast); border-color: var(--accent-strong); background: var(--accent-strong); }
.button-secondary { background: var(--surface-soft); border-color: var(--line); }
.button-ghost { background: transparent; color: var(--muted); border-color: transparent; box-shadow: none; }
.button-ghost:hover { color: var(--text); border-color: var(--line); background: var(--surface-soft); }
.button-wide { width: 100%; }
.button-large { min-height: 42px; padding: 0 20px; border-radius: 6px; font-size: 11px; }
.text-button { padding: 4px 2px; color: var(--accent-strong); font: 700 9px ui-monospace, SFMono-Regular, Consolas, monospace; }
.text-button:hover { color: var(--text); }
.popover { position: absolute; top: calc(100% + 8px); right: 0; width: 280px; padding: 7px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); box-shadow: var(--shadow); }
.export-menu button { width: 100%; display: grid; gap: 3px; text-align: left; padding: 10px; border: 0; border-radius: 9px; background: transparent; }
.export-menu button:hover { background: var(--surface-soft); }
.export-menu b { font-size: 12px; }
.export-menu small { color: var(--muted); font-size: 10px; }
.stepbar { display: flex; justify-content: center; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); background: var(--chrome); }
.step { display: grid; grid-template-columns: 30px auto; column-gap: 9px; text-align: left; border: 0; background: transparent; opacity: .6; }
.step > span { grid-row: 1 / 3; display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--line-strong); border-radius: 5px; font: 700 9px ui-monospace, SFMono-Regular, Consolas, monospace; }
.step b { align-self: end; font-size: 10px; }
.step small { color: var(--muted); font: 8px ui-monospace, SFMono-Regular, Consolas, monospace; }
.step.is-active { opacity: 1; }
.step.is-active > span { color: #fff; border-color: var(--accent); background: var(--accent); box-shadow: none; }
.step-line { width: 56px; height: 1px; background: var(--line); }
.workspace { min-height: 0; display: grid; grid-template-columns: 228px minmax(0, 1fr); }
.sidebar { min-height: 0; display: flex; flex-direction: column; gap: 8px; padding: 17px 13px 13px; border-right: 1px solid var(--line); background: var(--chrome); }
.sidebar-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.sidebar-heading div { display: grid; gap: 2px; }
.sidebar-heading small, .field-label { color: var(--muted); font: 800 8px ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; }
.sidebar-heading strong { font-size: 13px; }
.field-label { margin: 8px 3px 0; }
.text-input { width: 100%; min-height: 33px; padding: 0 9px; border: 1px solid var(--line); border-radius: 6px; outline: 0; background: var(--surface); font-size: 11px; }
.text-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.outline { display: grid; gap: 5px; margin-top: 14px; }
.outline-item { display: flex; align-items: center; gap: 9px; padding: 8px; text-align: left; border: 0; border-radius: 6px; background: transparent; }
.outline-item:hover, .outline-item.is-active { background: var(--surface-soft); }
.outline-item.is-active { color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.outline-icon { display: grid; place-items: center; width: 27px; height: 27px; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.outline-item > span:last-child { display: grid; gap: 2px; }
.outline-item b { font-size: 11px; }
.outline-item small { color: var(--muted); font-size: 9px; }
.sidebar-footer { display: grid; gap: 7px; margin-top: auto; }
.privacy-note { display: flex; gap: 9px; align-items: center; padding: 9px; margin-bottom: 3px; border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line)); border-radius: 6px; background: var(--accent-soft); }
.privacy-note > span { color: var(--accent); }
.privacy-note div { display: grid; gap: 2px; }
.privacy-note b { font-size: 10px; }
.privacy-note small { color: var(--muted); font-size: 8px; }
.view { min-width: 0; min-height: 0; display: none; overflow: auto; padding: 26px clamp(22px, 4vw, 58px) 36px; background-image: linear-gradient(rgba(102, 105, 128, .025) 1px, transparent 1px), linear-gradient(90deg, rgba(102, 105, 128, .025) 1px, transparent 1px); background-size: 24px 24px; }
.view.is-active { display: block; }
.view-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; max-width: 1120px; margin: 0 auto 23px; }
.view-header.compact { max-width: none; margin-bottom: 16px; }
.eyebrow { display: block; margin-bottom: 7px; color: var(--accent); font: 800 8px ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .13em; }
.view-header h1 { margin: 0 0 6px; font-size: clamp(22px, 2.5vw, 29px); line-height: 1.1; letter-spacing: -.03em; }
.view-header p { max-width: 620px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.status-pill { display: inline-flex; align-items: center; gap: 7px; flex: 0 0 auto; padding: 6px 9px; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); color: var(--muted); font: 8px ui-monospace, SFMono-Regular, Consolas, monospace; }
.status-pill.small { padding: 4px 7px; }
.source-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, .8fr); gap: 14px; max-width: 1120px; margin: 0 auto; }
.panel { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 3px 12px rgba(35,37,52,.035); }
.panel-heading, .panel-footer, .pane-title { display: flex; align-items: center; justify-content: space-between; min-height: 39px; padding: 0 12px; border-bottom: 1px solid var(--line); color: var(--muted); font: 8px ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .02em; }
.panel-heading > div { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 11px; }
.panel-icon { color: var(--accent); }
.transcript-panel textarea { display: block; width: 100%; height: 270px; resize: vertical; padding: 16px 17px 16px 44px; border: 0; border-left: 3px solid var(--accent-soft); outline: 0; background: var(--field); color: var(--text); caret-color: var(--accent); font: 12px/1.65 ui-monospace, SFMono-Regular, Consolas, monospace; }
.panel-footer { min-height: 35px; border-top: 1px solid var(--line); border-bottom: 0; }
.drop-zone { display: grid; place-items: center; gap: 6px; min-height: 132px; margin: 12px; border: 1px dashed var(--line-strong); border-radius: 7px; background: var(--surface-soft); text-align: center; transition: .15s ease; }
.drop-zone.is-over { border-color: var(--accent); background: var(--accent-soft); }
.drop-zone input { display: none; }
.drop-zone b { font-size: 11px; }
.drop-zone small { color: var(--muted); font-size: 9px; }
.upload-icon { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 5px; color: var(--accent); background: var(--accent-soft); font-size: 17px; }
.file-list { max-height: 120px; overflow: auto; margin: 0 14px 14px; }
.empty-files { padding: 12px; text-align: center; color: var(--muted); font-size: 9px; }
.file-item { display: flex; align-items: center; gap: 8px; padding: 7px 2px; border-top: 1px solid var(--line); }
.file-item:first-child { border-top: 0; }
.file-item > span:first-child { display: grid; place-items: center; width: 25px; height: 25px; border-radius: 7px; background: var(--accent-soft); color: var(--accent); font-size: 9px; }
.file-item div { min-width: 0; display: grid; gap: 1px; }
.file-item b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 9px; }
.file-item small { color: var(--muted); font-size: 8px; }
.file-item button { margin-left: auto; border: 0; background: none; color: var(--muted); }
.format-card { display: flex; align-items: center; justify-content: space-between; gap: 18px; max-width: 1120px; margin: 12px auto 0; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.format-intro { display: flex; align-items: center; gap: 12px; }
.format-icon { display: grid; place-items: center; flex: 0 0 auto; width: 32px; height: 32px; border-radius: 5px; color: #fff; background: var(--accent); }
.format-intro b { font-size: 11px; }
.format-intro p { margin: 3px 0 0; color: var(--muted); font-size: 9px; line-height: 1.4; }
.format-chips { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 5px; }
.format-chips span { padding: 4px 7px; border: 1px solid var(--line); border-radius: 4px; background: var(--surface-soft); color: var(--muted); font: 8px ui-monospace, SFMono-Regular, Consolas, monospace; }
.primary-action-row { display: grid; justify-items: center; gap: 8px; max-width: 1120px; margin: 22px auto 0; }
.primary-action-row small { color: var(--muted); font-size: 8px; }
.segmented { display: flex; padding: 3px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.segmented button { padding: 6px 10px; border: 1px solid transparent; border-radius: 4px; background: transparent; color: var(--muted); font: 700 9px ui-monospace, SFMono-Regular, Consolas, monospace; }
.segmented button:hover { color: var(--text); }
.segmented button.is-active { color: var(--accent-strong); border-color: color-mix(in srgb, var(--accent) 42%, var(--line)); background: var(--accent-soft); box-shadow: none; }
.document-workspace { min-height: 620px; display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 5px 18px rgba(35,37,52,.05); }
.editor-pane, .preview-pane { min-width: 0; display: grid; grid-template-rows: 39px minmax(0, 1fr); }
.editor-pane { border-right: 1px solid var(--line); }
.pane-title { min-height: 39px; background: var(--surface-soft); }
#markdown-editor { width: 100%; min-height: 580px; resize: none; padding: 22px; border: 0; outline: 0; background: var(--editor-bg); color: var(--editor-text); caret-color: var(--accent); tab-size: 2; font: 12px/1.65 ui-monospace, SFMono-Regular, Consolas, monospace; }
.preview-pane { overflow: hidden; }
.markdown-body { overflow: auto; padding: 34px clamp(24px, 4vw, 56px) 60px; }
.markdown-body > :first-child { margin-top: 0; }
.markdown-body h1 { margin: 0 0 7px; font-size: 31px; letter-spacing: -.04em; }
.markdown-body h2 { margin: 34px 0 12px; padding-bottom: 7px; border-bottom: 1px solid var(--line); font-size: 18px; letter-spacing: -.02em; }
.markdown-body h3 { margin: 24px 0 8px; font-size: 14px; }
.markdown-body p, .markdown-body li { font-size: 12px; line-height: 1.7; }
.markdown-body table { width: 100%; border-collapse: collapse; font-size: 10px; }
.markdown-body th, .markdown-body td { padding: 8px 9px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.markdown-body th { background: var(--surface-soft); }
.markdown-body code { padding: 2px 4px; border-radius: 5px; background: var(--surface-soft); font: 10px ui-monospace, monospace; }
.markdown-body pre { overflow: auto; padding: 14px; border-radius: 10px; background: #252630; color: #e8e8ee; }
.markdown-body blockquote { margin-left: 0; padding: 9px 14px; border-left: 3px solid var(--accent); background: var(--accent-soft); }
.document-workspace.mode-edit { grid-template-columns: 1fr; }
.document-workspace.mode-edit .preview-pane { display: none; }
.document-workspace.mode-preview { grid-template-columns: 1fr; }
.document-workspace.mode-preview .editor-pane { display: none; }
.diagram-view.is-active { display: flex; flex-direction: column; overflow: hidden; }
.diagram-header { flex: 0 0 auto; width: 100%; }
.diagram-actions { display: flex; gap: 7px; }
.bpmn-shell { position: relative; flex: 1; min-height: 570px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background-color: var(--canvas-bg); background-image: radial-gradient(var(--canvas-dot) 1px, transparent 1px); background-size: 18px 18px; box-shadow: 0 5px 18px rgba(35,37,52,.05); }
#bpmn-canvas { width: 100%; height: 100%; min-height: 570px; }
.canvas-hint { position: absolute; right: 12px; bottom: 12px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--floating-bg); color: var(--muted); font: 8px ui-monospace, SFMono-Regular, Consolas, monospace; pointer-events: none; }
.djs-palette { border: 1px solid var(--line) !important; border-radius: 7px !important; background: var(--floating-bg) !important; box-shadow: var(--shadow) !important; }
.djs-palette .entry:hover { background: var(--accent-soft) !important; }
.djs-context-pad { border-radius: 8px; }
.statusbar { display: flex; align-items: center; gap: 25px; padding: 0 14px; border-top: 1px solid var(--line); background: var(--chrome); color: var(--muted); font: 8px ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .04em; }
.statusbar span:last-child { margin-left: auto; }
.status-dot { display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: var(--success); }
dialog { width: min(920px, calc(100vw - 40px)); height: min(720px, calc(100vh - 60px)); padding: 0; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
dialog::backdrop { background: rgba(20,21,30,.42); backdrop-filter: blur(5px); }
.dialog-card { height: 100%; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; padding: 18px; }
.dialog-heading { display: flex; justify-content: space-between; align-items: flex-start; }
.dialog-heading h2 { margin: 0 0 15px; font-size: 20px; }
#xml-editor { width: 100%; resize: none; padding: 15px; border: 1px solid var(--line); border-radius: 6px; outline: 0; background: var(--editor-bg); color: var(--editor-text); caret-color: var(--accent); font: 11px/1.5 ui-monospace, monospace; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 7px; padding-top: 14px; }
.toast { position: fixed; z-index: 50; left: 50%; bottom: 42px; transform: translate(-50%, 14px); padding: 10px 14px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--editor-bg); color: var(--editor-text); box-shadow: var(--shadow); font: 9px ui-monospace, SFMono-Regular, Consolas, monospace; opacity: 0; pointer-events: none; transition: .2s ease; }

html[data-theme="dark"] .djs-shape .djs-visual > :is(rect, circle, polygon, path) { fill: #242733 !important; stroke: #b9bdca !important; }
html[data-theme="dark"] .djs-connection .djs-visual > path { stroke: #aeb3c2 !important; }
html[data-theme="dark"] .djs-label, html[data-theme="dark"] .djs-element text { fill: #f2f1f7 !important; }
html[data-theme="dark"] .djs-outline { stroke: var(--accent) !important; }
html[data-theme="dark"] .djs-palette { --palette-entry-color: #e8e9f1; --palette-entry-hover-color: #b1a9ff; --palette-entry-selected-color: #b1a9ff; --palette-separator-color: #44495b; --palette-toggle-hover-background-color: #302c52; }
html[data-theme="dark"] .djs-context-pad .entry { background-color: #242733 !important; color: #f2f1f7 !important; }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .source-grid { grid-template-columns: 1fr; }
  .document-workspace { grid-template-columns: 1fr; }
  .document-workspace.mode-split .editor-pane { border-right: 0; border-bottom: 1px solid var(--line); }
  .format-card { align-items: flex-start; flex-direction: column; }
  .format-chips { justify-content: flex-start; }
}

@media (max-width: 620px) {
  .app-shell { grid-template-rows: 58px 58px minmax(0, 1fr) 28px; }
  .save-state, .brand-lockup small, .step small, .step-line { display: none; }
  .titlebar { padding: 0 12px; }
  .stepbar { justify-content: space-around; gap: 3px; }
  .step { grid-template-columns: 26px auto; }
  .step > span { width: 26px; height: 26px; }
  .view { padding: 22px 14px 34px; }
  .view-header { flex-direction: column; }
  .statusbar span:nth-child(2) { display: none; }
  .titlebar-actions .button-primary { padding: 0 10px; }
}

@media print {
  .titlebar, .stepbar, .sidebar, .statusbar, .view-header, .editor-pane { display: none !important; }
  .app-shell, .workspace, .document-workspace, .preview-pane { display: block !important; }
  .view { display: none !important; }
  #view-document { display: block !important; padding: 0; }
  .document-workspace { border: 0; box-shadow: none; }
}