:root {
  --bg: #0f1117;
  --panel: #171b26;
  --panel-2: #1e2433;
  --border: #2a3144;
  --text: #e8ecf4;
  --muted: #9aa6bf;
  --accent: #6ea8ff;
  --accent-2: #9b7bff;
  --entity: #ffb86b;
  --system: #7ee8a2;
  --loop: #ff7eb6;
  --section-fantasy: #5bc0eb;
  --section-systems: #7ee8a2;
  --section-entities: #ffb86b;
  --section-loops: #ff7eb6;
  --section-ship: #c792ea;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  font-family: "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, #1a2030, var(--bg) 45%);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 17, 23, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-mark {
  color: var(--accent);
  font-size: 1.25rem;
}

.brand h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.pack-updated {
  color: var(--muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.pack-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}

.action-btn {
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  font-size: 0.85rem;
}

.action-btn:hover:not(:disabled) {
  border-color: var(--accent);
}

.action-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.action-btn.primary {
  border-color: var(--accent);
  background: linear-gradient(135deg, #2a4f8f, #3d2f7a);
  color: white;
}

.refresh-sections {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  margin: 0;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
}

.refresh-sections legend {
  padding: 0 0.25rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.layout-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
}

.layout-btn {
  padding: 0.4rem 0.7rem;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8rem;
}

.layout-btn:hover:not(:disabled) {
  color: var(--text);
}

.layout-btn[aria-pressed="true"] {
  background: linear-gradient(135deg, #2a4f8f, #3d2f7a);
  color: white;
}

.layout-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.section-check {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.78rem;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.section-check input {
  accent-color: var(--accent);
}

.load-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.load-form label {
  color: var(--muted);
  font-size: 0.85rem;
}

.load-form input {
  width: min(360px, 40vw);
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
}

.load-form button {
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: linear-gradient(135deg, #2a4f8f, #3d2f7a);
  color: white;
  cursor: pointer;
}

.layout {
  display: grid;
  grid-template-columns: 220px 1fr 340px;
  min-height: calc(100vh - 96px);
}

.sidebar {
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 1rem;
  overflow-y: auto;
}

.sidebar h2 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.ingest-panel label {
  display: block;
  margin: 0.65rem 0 0.35rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.ingest-panel input,
.ingest-panel textarea {
  width: 100%;
  padding: 0.45rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
  resize: vertical;
}

.ingest-hint {
  margin: 0 0 0.5rem;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--muted);
}

.ingest-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.ingest-actions .action-btn {
  width: 100%;
  justify-content: center;
}

.canvas-control-btn.icon-btn {
  min-width: 2rem;
  padding: 0.35rem 0.5rem;
  font-size: 1rem;
  line-height: 1;
}

.kind-group {
  margin-bottom: 1rem;
}

.kind-group h3 {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.kind-group button {
  display: block;
  width: 100%;
  text-align: left;
  margin-bottom: 0.25rem;
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
}

.kind-group button:hover,
.kind-group button.active {
  background: var(--panel-2);
  border-color: var(--border);
}

.workspace {
  position: relative;
  overflow: hidden;
  padding: 0;
  background: #0d1018;
}

.canvas-controls {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 4;
  display: flex;
  gap: 0.35rem;
}

.canvas-control-btn {
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(23, 27, 38, 0.92);
  color: var(--text);
  font-size: 0.8rem;
  cursor: pointer;
  backdrop-filter: blur(6px);
}

.canvas-control-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.canvas-viewport {
  position: relative;
  width: 100%;
  height: calc(100vh - 96px);
  overflow: hidden;
  cursor: grab;
}

.canvas-viewport.panning,
.canvas-viewport.dragging-node {
  cursor: grabbing;
}

.canvas {
  position: relative;
  min-width: 1100px;
  min-height: 700px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background:
    linear-gradient(var(--border) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, var(--border) 1px, transparent 1px) 0 0 / 24px 24px,
    #121722;
  box-shadow: var(--shadow);
  transform-origin: 0 0;
  margin: 1rem;
}

.edges {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.nodes {
  position: relative;
  width: 100%;
  height: 100%;
}

.node {
  position: absolute;
  min-width: 140px;
  max-width: 200px;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  box-shadow: var(--shadow);
  cursor: grab;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
  user-select: none;
  touch-action: none;
}

.node:active {
  cursor: grabbing;
}

.node:hover,
.node.selected {
  border-color: var(--accent);
  box-shadow: 0 10px 28px rgba(110, 168, 255, 0.2);
}

.node .node-type {
  display: inline-block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.node .node-label {
  font-size: 0.85rem;
  line-height: 1.3;
  font-weight: 600;
}

.node.section[data-kind="fantasy"] {
  border-color: var(--section-fantasy);
}

.node.section[data-kind="systems"] {
  border-color: var(--section-systems);
}

.node.section[data-kind="entities"] {
  border-color: var(--section-entities);
}

.node.section[data-kind="loops"] {
  border-color: var(--section-loops);
}

.node.section[data-kind="ship_notes"] {
  border-color: var(--section-ship);
}

.node.entity {
  border-color: color-mix(in srgb, var(--entity) 70%, var(--border));
  background: color-mix(in srgb, var(--entity) 12%, var(--panel-2));
}

.node.system {
  border-color: color-mix(in srgb, var(--system) 70%, var(--border));
  background: color-mix(in srgb, var(--system) 12%, var(--panel-2));
}

.node.loop_step {
  border-color: color-mix(in srgb, var(--loop) 70%, var(--border));
  background: color-mix(in srgb, var(--loop) 12%, var(--panel-2));
}

.node.cluster {
  border-color: color-mix(in srgb, var(--accent-2) 75%, var(--border));
  background: color-mix(in srgb, var(--accent-2) 14%, var(--panel-2));
  min-width: 120px;
  max-width: 240px;
}

.node.cluster .node-detail-preview {
  margin: 0.35rem 0 0;
  font-size: 0.72rem;
  line-height: 1.35;
  color: var(--muted);
  font-weight: 400;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.canvas[data-layout="clusters"] .node.section {
  display: none;
}

.workspace.clusters-mode .sidebar {
  opacity: 1;
}

.detail {
  border-left: 1px solid var(--border);
  background: var(--panel);
  padding: 1rem;
  overflow-y: auto;
}

.detail-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.detail-meta {
  margin: 0.35rem 0 0.75rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.detail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--muted);
  font-size: 0.75rem;
  cursor: pointer;
}

.chip:hover {
  color: var(--text);
  border-color: var(--accent);
}

.detail-content {
  font-size: 0.92rem;
  line-height: 1.55;
}

.detail-content h2,
.detail-content h3 {
  margin: 0.75rem 0 0.35rem;
  color: var(--text);
}

.detail-content h2:first-child,
.detail-content h3:first-child {
  margin-top: 0;
}

.detail-content p {
  margin: 0.5rem 0;
}

.detail-content ul {
  margin: 0.5rem 0;
  padding-left: 1.25rem;
}

.detail-content li {
  margin: 0.25rem 0;
}

.detail-content strong {
  color: var(--text);
  font-weight: 600;
}

.detail-content em {
  color: var(--muted);
}

.detail-content code {
  font-family: "Cascadia Code", "Fira Code", monospace;
  font-size: 0.85em;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  background: var(--panel-2);
  border: 1px solid var(--border);
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.detail-editor {
  width: 100%;
  min-height: 220px;
  margin-bottom: 0.75rem;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-family: "Cascadia Code", "Fira Code", monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  resize: vertical;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
}

.footer [data-tone="error"] {
  color: #ff8a8a;
}

.status-toast {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.78rem;
  white-space: nowrap;
}

.status-toast[data-tone="success"] {
  border-color: color-mix(in srgb, var(--system) 60%, var(--border));
  color: var(--system);
}

.status-toast[data-tone="error"] {
  border-color: color-mix(in srgb, #ff8a8a 60%, var(--border));
  color: #ff8a8a;
}

.sync-changes-modal {
  width: min(720px, 92vw);
  max-height: 85vh;
  margin: auto;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.sync-changes-modal::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.sync-changes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}

.sync-changes-header h2 {
  margin: 0;
  font-size: 1rem;
}

.sync-changes-summary {
  margin: 0;
  padding: 0.65rem 1rem;
  color: var(--muted);
  font-size: 0.82rem;
  border-bottom: 1px solid var(--border);
}

.sync-changes-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.85rem 1rem 1rem;
  max-height: 60vh;
  overflow: auto;
}

.sync-change-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-2);
  overflow: hidden;
}

.sync-change-card h3 {
  margin: 0;
  padding: 0.55rem 0.75rem;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-2) 80%, var(--border));
}

.sync-change-narration {
  margin: 0;
  padding: 0.65rem 0.75rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 6%, var(--panel-2));
}

.sync-change-diff {
  margin: 0;
  padding: 0.5rem 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.75rem;
  line-height: 1.45;
  overflow-x: auto;
}

.diff-line {
  display: block;
  padding: 0.1rem 0.75rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.diff-line[data-type="add"] {
  background: color-mix(in srgb, #3ecf8e 18%, transparent);
  color: #9ef0c8;
}

.diff-line[data-type="remove"] {
  background: color-mix(in srgb, #ff6b6b 18%, transparent);
  color: #ffb3b3;
}

.diff-line[data-type="context"] {
  color: var(--muted);
}

body.pack-busy .canvas-viewport {
  opacity: 0.72;
  pointer-events: none;
}

.placeholder {
  color: var(--muted);
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar,
  .detail {
    border: none;
    border-bottom: 1px solid var(--border);
  }
}