:root {
  --board-bg: #1e1f26;
  --card-bg: #2a2c37;
  --card-border: #4a4d5e;
  --card-text: #e8e8ec;
  --card-preview: #9a9cab;
  --card-selected: #7aa2f7;
  --card-missing-text: #6b6e7d;
  --connection-line: #6b6e7d;
  --connection-selected: #7aa2f7;
  --pin-mark: #f6b26b;
  --hint-text: #6f6f75;
  --panel-bg: #23242c;
  --panel-bg-translucent: rgba(35, 36, 44, 0.75);
  --panel-border: #3a3c48;
  --panel-text: #e8e8ec;
  --panel-muted: #9a9ca6;
  --error-bg: #4a2530;
  --error-text: #f2c9d1;
  --danger: #c0392b;
  --danger-hover: #a93226;
  --author-human: #7aa2f7;
  --author-agent: #f6b26b;
  --md-heading: #7aa2f7;
  --md-heading-2: #f6b26b;
  --md-link: #7dcfff;
  --md-code-bg: #2d2f3b;
  --md-code-text: #9ece6a;
  --md-quote-border: #4a4d5e;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--board-bg);
  font-family: system-ui, sans-serif;
}

#app {
  width: 100%;
  height: 100%;
}

.app {
  position: relative;
  display: flex;
  flex-direction: row;
  width: 100%;
  height: 100%;
  color: var(--panel-text);
}

.welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1em;
  text-align: center;
}

.board {
  position: relative;
  flex: 1;
  min-width: 0;
}

svg {
  display: block;
  width: 100%;
  height: 100%;
  user-select: none;
  touch-action: none;
}

.board-hint {
  pointer-events: none;
  fill: var(--hint-text);
}

.toolbar {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  align-items: center;
  gap: 0.75em;
}

.folder-name {
  color: var(--panel-muted);
  font-size: 0.9em;
}

.folder-pane {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 240px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background: var(--panel-bg-translucent);
  backdrop-filter: blur(6px);
  border-right: 1px solid var(--panel-border);
}

.folder-pane.busy {
  opacity: 0.6;
}

.folder-pane-header {
  display: flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.5em 0.75em;
  border-bottom: 1px solid var(--panel-border);
}

.folder-pane-header .folder-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.folder-list {
  display: flex;
  flex-direction: column;
  padding: 0.25em 0;
}

.folder-row {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--panel-text);
  padding: 0.4em 0.75em;
  cursor: pointer;
}

.folder-row:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
}

.folder-row.folder-up {
  color: var(--panel-muted);
}

.folder-loading {
  color: var(--panel-muted);
  padding: 0.4em 0.75em;
}

.toasts {
  position: absolute;
  z-index: 20;
  bottom: 12px;
  left: 12px;
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}

.toast {
  background: var(--error-bg);
  color: var(--error-text);
  padding: 0.5em 0.75em;
  border-radius: 6px;
  cursor: pointer;
}

.app.resizing {
  cursor: col-resize;
  user-select: none;
}

.panel-resizer {
  position: absolute;
  left: -3px;
  top: 0;
  bottom: 0;
  width: 6px;
  cursor: col-resize;
  z-index: 10;
  background: transparent;
  touch-action: none;
}

.panel-resizer:hover,
.app.resizing .panel-resizer {
  background: linear-gradient(to right, transparent 2px, var(--card-selected) 2px, var(--card-selected) 4px, transparent 4px);
}

.side-panel {
  position: relative;
  max-width: calc(100% - 240px);
  width: 420px;
  flex: none;
  background: var(--panel-bg);
  border-left: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5em 0.75em;
  border-bottom: 1px solid var(--panel-border);
}

.editor-path {
  color: var(--panel-muted);
  font-size: 0.85em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.editor-missing {
  padding: 0.75em;
  color: var(--panel-muted);
}

.editor-loading {
  padding: 0.75em;
  color: var(--panel-muted);
}

.markdown {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 0.75em;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.markdown h1, .markdown h2 {
  color: var(--md-heading);
}

.markdown h3, .markdown h4, .markdown h5, .markdown h6 {
  color: var(--md-heading-2);
}

.markdown a {
  color: var(--md-link);
  text-decoration: underline;
}

.markdown code, .markdown pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--md-code-bg);
  color: var(--md-code-text);
}

.markdown code {
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

.markdown pre {
  padding: 0.5em 0.75em;
  border-radius: 4px;
  overflow-x: auto;
}

.markdown pre code {
  padding: 0;
  background: none;
}

.markdown blockquote {
  margin: 0.5em 0;
  padding-left: 0.75em;
  border-left: 3px solid var(--md-quote-border);
  color: var(--panel-muted);
}

.markdown table {
  border-collapse: collapse;
}

.markdown th, .markdown td {
  border: 1px solid var(--panel-border);
  padding: 0.25em 0.5em;
}

.md-fields {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.15em 0.75em;
  margin: 0 0 0.75em;
  padding-bottom: 0.5em;
  border-bottom: 1px solid var(--panel-border);
  color: var(--panel-muted);
  font-size: 0.8em;
}

.md-fields dt {
  font-weight: bold;
}

.md-fields dd {
  margin: 0;
}

.md-task.done {
  color: var(--author-human);
}

.md-image {
  color: var(--panel-muted);
}

.viewer-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.code-view {
  flex: 1;
  min-height: 0;
  margin: 0;
  padding: 0.75em;
  overflow: auto;
  white-space: pre;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--md-code-bg);
  color: var(--md-code-text);
}

.card-kind {
  font-style: italic;
  fill: var(--card-preview);
}

.truncated-note {
  padding: 0.25em 0.75em;
  color: var(--panel-muted);
  font-size: 0.8em;
}

.connection-label {
  fill: var(--panel-muted);
  font-size: 0.85em;
  paint-order: stroke;
  stroke: var(--panel-bg);
  stroke-width: 4px;
}

.author-human {
  fill: var(--author-human);
  color: var(--author-human);
}

.author-agent {
  fill: var(--author-agent);
  color: var(--author-agent);
}

.connection-field {
  display: flex;
  flex-direction: column;
  gap: 0.25em;
  padding: 0.5em 0.75em;
  color: var(--panel-muted);
  font-size: 0.85em;
}

.connection-field input,
.connection-field textarea {
  background: transparent;
  color: var(--panel-text);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  font: inherit;
  padding: 0.4em 0.5em;
}

#connection-note-human {
  min-height: 8em;
  resize: vertical;
}

.connection-note-agent {
  padding: 0.5em 0.75em;
  color: var(--panel-text);
  border-top: 1px solid var(--panel-border);
}

.connection-note-agent p {
  margin: 0.25em 0 0;
  white-space: pre-wrap;
}

.connection-delete {
  display: block;
  width: calc(100% - 1.5em);
  margin: auto 0.75em 0.75em;
  padding: 0.75em 1em;
  font-size: 1em;
  font-weight: 600;
  color: #fff;
  background: var(--danger);
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.connection-delete:hover {
  background: var(--danger-hover);
}

.connection-delete:focus-visible {
  outline: 2px solid var(--error-text);
}