:root {
  --bg: #0b1020;
  --panel: #121931;
  --panel-2: #182140;
  --panel-3: #1f2b52;
  --border: rgba(157, 178, 255, 0.16);
  --text: #ecf2ff;
  --muted: #95a3c6;
  --accent: #71a7ff;
  --success: #42d392;
  --warning: #f2bb4a;
  --danger: #ff6b7a;
  --manual: #9b8cff;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --node-width: 270px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: radial-gradient(circle at top, #162246, #09101f 55%);
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  overflow: hidden;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: linear-gradient(180deg, #2e4f88, #23416d);
  color: var(--text);
  padding: 10px 14px;
  cursor: pointer;
}

button.secondary {
  background: #11192d;
}

button:hover:not(:disabled) {
  filter: brightness(1.06);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

input,
textarea {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(13, 21, 40, 0.88);
  color: var(--text);
  padding: 10px 12px;
}

textarea {
  resize: vertical;
}

.app-shell {
  height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) minmax(240px, 30vh);
}

.topbar {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 18px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(8, 13, 27, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-copy {
  min-width: 0;
}

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #6ca9ff, #6f61ff);
  font-weight: 700;
  letter-spacing: 0.08em;
  flex: 0 0 auto;
}

.brand-title {
  font-size: 22px;
  font-weight: 700;
}

.brand-subtitle,
.muted,
.panel-subtitle {
  color: var(--muted);
}

.config-form {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) repeat(3, minmax(88px, 110px)) minmax(240px, 1.2fr) auto;
  gap: 12px;
  align-items: end;
  min-width: 0;
}

.config-form label {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  min-width: 0;
}

.screenplay-field {
  grid-column: 1 / -1;
}

.constraints-field {
  min-width: 0;
}

.toolbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.auth-actions {
  margin-top: 12px;
}

.inline-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(320px, 25vw, 420px);
}

.canvas-pane,
.inspector-pane,
.bottom-pane {
  padding: 18px 20px;
}

.canvas-pane {
  border-right: 1px solid var(--border);
  min-width: 0;
}

.inspector-pane {
  min-width: 0;
  overflow: auto;
}

.canvas-header,
.panel-title {
  font-weight: 700;
}

.canvas-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 12px;
}

.status-chip {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  text-transform: uppercase;
}

.status-chip.running {
  color: var(--warning);
}

.status-chip.success {
  color: var(--success);
}

.status-chip.error {
  color: var(--danger);
}

.status-chip.neutral {
  color: var(--muted);
}

.canvas-viewport {
  position: relative;
  overflow: auto;
  height: 100%;
  min-height: 420px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background:
    linear-gradient(rgba(145, 171, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(145, 171, 255, 0.07) 1px, transparent 1px),
    rgba(10, 15, 29, 0.96);
  background-size: 24px 24px, 24px 24px, auto;
  overscroll-behavior: contain;
  cursor: default;
  min-width: 0;
}

.canvas-viewport.space-pan-ready,
.canvas-viewport.canvas-panning {
  cursor: grab;
}

.canvas-viewport.canvas-panning {
  cursor: grabbing;
}

.edge-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.edge-layer path {
  fill: none;
  stroke: rgba(130, 173, 255, 0.9);
  stroke-width: 2.4;
  marker-end: url(#edgeArrow);
}

.edge-layer text {
  fill: var(--muted);
  font-size: 11px;
}

.node-layer {
  position: relative;
}

.node {
  position: absolute;
  width: var(--node-width);
  border-radius: 18px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(31, 43, 82, 0.96), rgba(18, 25, 49, 0.96));
  box-shadow: var(--shadow);
  overflow: hidden;
  user-select: none;
}

.node.selected {
  outline: 2px solid rgba(113, 167, 255, 0.78);
}

.node-header {
  padding: 12px 14px;
  display: grid;
  gap: 6px;
  cursor: grab;
  background: rgba(14, 20, 41, 0.7);
}

.node-title {
  font-size: 15px;
  font-weight: 700;
}

.node-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.node-status {
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 11px;
  text-transform: uppercase;
}

.status-implemented {
  background: rgba(66, 211, 146, 0.18);
  color: var(--success);
}

.status-partial {
  background: rgba(242, 187, 74, 0.16);
  color: var(--warning);
}

.status-planned {
  background: rgba(113, 167, 255, 0.16);
  color: var(--accent);
}

.status-manual {
  background: rgba(155, 140, 255, 0.18);
  color: var(--manual);
}

.status-error {
  background: rgba(255, 107, 122, 0.16);
  color: var(--danger);
}

.node-kind {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.node-body {
  padding: 12px 14px 14px;
  display: grid;
  gap: 10px;
}

.node-summary {
  color: var(--muted);
  line-height: 1.45;
  font-size: 13px;
}

.node-output-preview {
  display: grid;
  gap: 6px;
}

.preview-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 12px;
  width: fit-content;
}

.node-port {
  position: absolute;
  top: 50%;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: #dbe5ff;
  border: 2px solid #4e6fb6;
  transform: translateY(-50%);
}

.node-port.in {
  left: -6px;
}

.node-port.out {
  right: -6px;
}

.panel {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(12, 17, 34, 0.88);
  padding: 16px;
  margin-bottom: 14px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.stat-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  padding: 12px;
}

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

.stat-value {
  margin-top: 6px;
  font-size: 22px;
  font-weight: 700;
}

.selected-node-panel,
.log-panel {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.auth-meta {
  display: grid;
  gap: 8px;
}

.auth-callout p {
  margin: 0;
  color: var(--text);
  line-height: 1.6;
}

.auth-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--muted);
}

.auth-row strong {
  color: var(--text);
  text-align: right;
  word-break: break-word;
}

.device-auth-card {
  display: grid;
  gap: 14px;
}

.device-auth-status {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.auth-step-list {
  margin: 0;
  padding-left: 20px;
  color: var(--text);
  line-height: 1.6;
}

.auth-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.auth-card-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  padding: 12px;
}

.auth-card-label {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 8px;
}

.auth-link {
  color: var(--accent);
  text-decoration: none;
  word-break: break-all;
}

.auth-link:hover {
  text-decoration: underline;
}

.device-code-box {
  border: 1px solid rgba(113, 167, 255, 0.35);
  border-radius: 14px;
  background: rgba(113, 167, 255, 0.08);
  padding: 14px 16px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
}

.detail-block {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.04);
}

.detail-title {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.detail-block.nested {
  margin-top: 4px;
  background: rgba(0, 0, 0, 0.14);
}

details.detail-block summary {
  cursor: pointer;
  color: var(--muted);
}

details.detail-block summary:hover {
  color: var(--text);
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

th,
td {
  padding: 8px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
  vertical-align: top;
}

th {
  position: sticky;
  top: 0;
  background: rgba(17, 25, 47, 0.96);
}

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 12px;
  line-height: 1.55;
}

.log-item,
.segment-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  padding: 12px;
}

.bottom-pane {
  border-top: 1px solid var(--border);
  background: rgba(8, 13, 27, 0.92);
  min-height: 0;
  overflow: hidden;
}

.segment-panel {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 12px;
  max-height: calc(30vh - 56px);
  overflow: auto;
}

.segment-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 10px;
}

.binding-list {
  display: grid;
  gap: 6px;
  margin-top: 10px;
}

.binding-item {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
}

.empty-state {
  color: var(--muted);
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: 14px;
}

@media (max-width: 1500px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .topbar {
    grid-template-columns: 1fr;
  }

  .config-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .app-shell {
    grid-template-rows: auto minmax(0, 1fr) minmax(240px, 34vh);
  }
}

@media (max-width: 900px) {
  .config-form {
    grid-template-columns: 1fr;
  }

  .auth-card-grid {
    grid-template-columns: 1fr;
  }

  .canvas-pane,
  .inspector-pane,
  .bottom-pane {
    padding: 14px;
  }
}