:root {
  --app-bg: #f6f8fb;
  --panel-bg: #ffffff;
  --panel-muted: #f1f5f9;
  --border: #d8e0ea;
  --text-main: #1f2933;
  --text-muted: #667085;
  --text-faint: #98a2b3;
  --accent: #0f766e;
  --accent-soft: #dff3f0;
  --key-bg: rgba(255, 232, 164, 0.42);
  --key-border: #f3c969;
  --anchor-bg: rgba(255, 214, 102, 0.36);
  --anchor-border: #d89b18;
  --anchor-label-bg: #fff4cf;
  --anchor-label-text: #7a4f00;
  --var-bg: #dff8f2;
  --var-text: #075e54;
  --jump-bg: #b8f3e6;
  --shadow: 0 16px 40px rgba(31, 41, 55, 0.14);
  --mono: "Cascadia Code", "Fira Code", Consolas, "Liberation Mono", monospace;
  --sans: "Segoe UI", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--app-bg);
  color: var(--text-main);
  font-family: var(--sans);
}

button,
input,
select {
  font: inherit;
}

.hidden {
  display: none !important;
}

.app-shell {
  display: grid;
  grid-template-rows: 56px minmax(0, 1fr);
  height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-bg);
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.top-status {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-muted);
  font-size: 12px;
}

.panel-head small,
.current-file-meta {
  color: var(--text-muted);
  font-size: 12px;
}

.top-actions {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

.top-action-button {
  height: 34px;
  min-width: 64px;
  border: 1px solid rgba(15, 118, 110, 0.24);
  border-radius: 7px;
  color: var(--accent);
  background: var(--accent-soft);
  cursor: pointer;
  font-weight: 750;
}

.top-action-button:hover {
  background: #caebe6;
}

.settings-popover {
  position: absolute;
  z-index: 150;
  top: 44px;
  right: 0;
  width: min(420px, calc(100vw - 24px));
  max-height: calc(100vh - 72px);
  overflow: auto;
  border: 1px solid rgba(15, 118, 110, 0.2);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  scrollbar-width: none;
}

.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 44px;
  padding: 0 14px;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
}

.settings-head button {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 6px;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  font-size: 20px;
}

.settings {
  display: grid;
  gap: 14px;
  padding: 14px;
}

.settings-group {
  display: grid;
  gap: 10px;
}

.settings-group h2 {
  margin: 0;
  color: var(--text-main);
  font-size: 13px;
}

.settings label {
  display: grid;
  gap: 5px;
}

.settings label span {
  color: var(--text-muted);
  font-size: 12px;
}

.settings input,
.settings select {
  height: 34px;
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 10px;
  color: var(--text-main);
  background: #fff;
}

.settings input:disabled {
  color: var(--text-muted);
  background: #f8fafc;
}

.settings button,
.flow-tabs button,
.floating-head button {
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
}

.settings button {
  height: 34px;
  color: #fff;
  background: var(--accent);
  font-weight: 650;
}

.settings button[data-source="local"] {
  color: var(--accent);
  background: var(--accent-soft);
}

.settings button:disabled {
  cursor: wait;
  opacity: 0.6;
}

.settings-actions,
.history-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.workspace {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) minmax(300px, 340px);
  min-height: 0;
  min-width: 0;
}

.project-map,
.flow-panel,
.code-stage {
  min-height: 0;
  min-width: 0;
  background: var(--panel-bg);
}

.project-map {
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.flow-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border-left: 1px solid var(--border);
  overflow: hidden;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.panel-head span {
  font-weight: 700;
}

.tree-root {
  height: calc(100vh - 100px);
  overflow: auto;
  padding: 8px 8px 28px;
}

.tree-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: baseline;
  width: 100%;
  min-height: 28px;
  border: 0;
  border-radius: 6px;
  padding: 4px 7px;
  color: var(--text-main);
  background: transparent;
  text-align: left;
}

.tree-item:hover {
  background: #eef6f6;
}

.tree-item.active {
  background: var(--accent-soft);
}

.tree-item.important .tree-name {
  font-weight: 800;
}

.tree-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}

.tree-note {
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
}

.tree-children {
  margin-left: 14px;
}

.function-list {
  margin: 3px 0 6px 14px;
  border-left: 1px solid var(--border);
}

.function-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  width: calc(100% - 4px);
  margin-left: 4px;
  border: 0;
  border-radius: 5px;
  padding: 3px 6px;
  background: transparent;
  color: var(--text-main);
  text-align: left;
}

.function-item:hover {
  background: #eef6f6;
}

.function-item.important .tree-name {
  font-weight: 800;
}

.code-stage {
  display: grid;
  grid-template-rows: minmax(0, 1fr);
}

.code-wrap {
  position: relative;
  min-height: 0;
  background: #fbfcfe;
}

.editor-root,
.plain-code {
  width: 100%;
  height: 100%;
}

.plain-code {
  overflow: auto;
  padding: 16px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  white-space: pre;
}

.flow-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}

.flow-tabs button {
  min-height: 36px;
  padding: 5px 6px;
  color: var(--text-muted);
  background: transparent;
  white-space: normal;
  line-height: 1.15;
  font-size: 13px;
}

.flow-tabs button.active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 750;
}

.flow-content {
  min-height: 0;
  overflow: auto;
  padding: 12px;
}

.flow-empty {
  display: grid;
  place-items: center;
  min-height: 180px;
  color: var(--text-muted);
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: #fff;
}

.flow-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  background: #f8fafc;
}

.flow-card + .flow-arrow {
  color: var(--text-faint);
  text-align: center;
  padding: 4px 0;
}

.flow-card h3 {
  margin: 0 0 5px;
  font-size: 14px;
}

.flow-card p {
  margin: 0 0 8px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.5;
}

.journey-intro {
  margin-bottom: 10px;
  padding: 12px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(223, 243, 240, 0.88), rgba(255, 248, 230, 0.62));
}

.journey-intro h3 {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 14px;
}

.journey-intro p {
  margin: 0;
  color: var(--text-main);
  font-size: 12px;
  line-height: 1.55;
}

.journey-hint {
  margin-top: 8px;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.4;
}

.journey-step-card {
  background: #fff;
}

.journey-step-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.journey-step-head h3 {
  margin: 0;
}

.layer-pill {
  flex: none;
  border-radius: 999px;
  padding: 2px 7px;
  color: var(--text-main);
  background: #eef2f7;
  font-size: 10px;
  font-weight: 850;
}

.layer-pill.prompt {
  color: var(--accent);
  background: var(--accent-soft);
}

.layer-pill.context {
  color: var(--accent);
  background: var(--accent-soft);
}

.layer-pill.harness {
  color: var(--accent);
  background: var(--accent-soft);
}

.flow-functions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.flow-functions button {
  border: 0;
  border-radius: 5px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 6px;
  font-size: 12px;
  cursor: pointer;
}

.floating-panel {
  position: fixed;
  z-index: 100;
  top: 50%;
  right: 24px;
  width: 300px;
  min-height: 220px;
  max-height: 420px;
  overflow: hidden;
  border: 1px solid rgba(15, 118, 110, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.floating-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  color: var(--accent);
  cursor: move;
  border-bottom: 1px solid rgba(15, 118, 110, 0.16);
}

.floating-head strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.floating-head button {
  width: 24px;
  height: 24px;
  color: var(--text-muted);
  background: transparent;
  font-size: 18px;
}

.floating-body {
  max-height: 350px;
  overflow: auto;
  padding: 12px;
  color: var(--text-main);
  font-size: 13px;
  line-height: 1.6;
  scrollbar-width: none;
}

.floating-body::-webkit-scrollbar,
.settings-popover::-webkit-scrollbar {
  display: none;
}

.flow-note {
  margin: 2px 0 10px;
  padding: 8px 10px;
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  color: var(--text-main);
  background: rgba(223, 243, 240, 0.62);
}

.scenario-flow {
  display: grid;
  gap: 10px;
}

.scenario-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.scenario-meta span {
  border-radius: 999px;
  padding: 3px 8px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 11px;
  font-weight: 800;
}

.scenario-card {
  padding: 10px 12px;
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: rgba(223, 243, 240, 0.68);
}

.scenario-card .scenario-label,
.scenario-output span,
.scenario-io span {
  display: block;
  margin-bottom: 3px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.scenario-card strong {
  display: block;
  color: var(--accent);
  font-size: 14px;
}

.scenario-card p {
  margin: 5px 0 0;
  color: var(--text-main);
}

.scenario-steps {
  display: grid;
  gap: 8px;
}

.scenario-step {
  padding: 10px;
  border: 1px solid rgba(15, 118, 110, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  cursor: pointer;
  transition: border-color 120ms ease, box-shadow 120ms ease, transform 120ms ease;
}

.scenario-step:hover,
.scenario-step:focus-visible {
  border-color: rgba(15, 118, 110, 0.32);
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.08);
  transform: translateY(-1px);
  outline: none;
}

.scenario-step header {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.scenario-step header span {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  color: #fff;
  background: var(--accent);
  font-size: 12px;
  font-weight: 900;
}

.scenario-step header strong {
  min-width: 0;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scenario-step header small {
  color: var(--text-muted);
  font-family: var(--mono);
}

.scenario-io {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
}

.scenario-io div {
  padding: 7px 8px;
  border-radius: 7px;
  background: rgba(223, 248, 242, 0.58);
}

.scenario-io p {
  margin: 0;
  color: var(--text-main);
}

.scenario-step footer,
.scenario-output {
  margin-top: 8px;
  padding: 7px 8px;
  border-radius: 7px;
  color: var(--text-main);
  background: #fff7dc;
}

.scenario-arrow {
  justify-self: center;
  color: var(--accent);
  font-weight: 900;
}

.variable-flows {
  display: grid;
  gap: 10px;
}

.variable-flow {
  padding: 10px;
  border: 1px solid rgba(15, 118, 110, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.data-flow-line {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.data-source-group {
  display: grid;
  align-items: center;
  gap: 6px;
  min-width: 0;
  width: 34%;
}

.data-node,
.data-main-node,
.data-effect-node {
  padding: 2px 6px;
  border-radius: 5px;
  color: var(--var-text);
  background: var(--var-bg);
  font-weight: 700;
}

.data-node {
  display: grid;
  gap: 2px;
}

.data-node code {
  font-family: var(--mono);
  color: var(--var-text);
  font-weight: 850;
}

.data-node small {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.45;
}

.data-node.muted {
  color: var(--text-muted);
  background: var(--panel-muted);
}

.data-plus,
.data-arrow {
  color: var(--accent);
  font-weight: 900;
}

.data-main-node {
  display: grid;
  gap: 2px;
  min-width: 96px;
  width: 36%;
  padding: 7px 8px;
  border: 1px solid rgba(15, 118, 110, 0.2);
  background: rgba(223, 248, 242, 0.78);
}

.data-main-node code {
  font-family: var(--mono);
  color: var(--var-text);
  font-weight: 850;
}

.data-main-node span {
  color: var(--text-main);
  font-weight: 700;
}

.data-main-node small {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.4;
}

.data-effect-node {
  width: 28%;
  color: var(--text-main);
  background: #fff7dc;
}

.empty-flow {
  color: var(--text-muted);
}

.var-pill {
  display: inline-block;
  margin: 0 4px 4px 0;
  padding: 1px 5px;
  border-radius: 5px;
  color: var(--var-text);
  background: var(--var-bg);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 750;
}

.monaco-editor .key-function-line {
  background: transparent !important;
  box-shadow: none;
}

.monaco-editor .anchor-line {
  background: transparent !important;
  box-shadow: none;
}

.monaco-editor .var-token,
.monaco-editor .key-function-name-token {
  color: var(--var-text) !important;
  background: var(--var-bg);
  border-radius: 3px;
  font-weight: 800;
}

.monaco-editor .focused-function-line {
  background: var(--key-bg) !important;
  box-shadow: inset 3px 0 0 var(--key-border);
}

.monaco-editor .jump-token {
  background: var(--jump-bg);
  outline: 1px solid var(--accent);
  border-radius: 3px;
}

.monaco-editor .inline-function-note {
  color: var(--text-muted);
  font-style: italic;
  margin-left: 18px;
}

.block-view-zone {
  display: flex;
  align-items: center;
  height: 100%;
  padding-left: 18px;
  color: var(--anchor-label-text);
  background: #fff;
  border-left: 2px solid var(--anchor-border);
  font-size: 12px;
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 260px minmax(0, 1fr) 300px;
  }

  .settings {
    grid-template-columns: 1fr 1fr 120px 90px 60px 60px 1fr 54px;
  }
}