:root {
  --bg: #1e1f22;
  --bg-alt: #18191c;
  --surface: #23252b;
  --surface-alt: #2b2e34;
  --surface-soft: #262932;
  --surface-muted: #20242c;
  --border: #333842;
  --text: #d7dae0;
  --muted: #9aa1ad;
  --accent: #7c9cff;
  --accent-soft: rgba(124, 156, 255, 0.14);
  --success: #7bd88f;
  --warning: #e6c15a;
  --danger: #ff8f8f;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.24);
  --radius: 14px;
  --font-ui: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--font-ui); }
body.overlay-open { overflow: hidden; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--font-mono); }
code { background: rgba(255, 255, 255, 0.05); padding: 0.16rem 0.4rem; border-radius: 6px; }
pre { background: var(--bg-alt); padding: 1rem; border-radius: 12px; overflow: auto; border: 1px solid var(--border); }
mark { background: rgba(255, 214, 102, 0.26); color: var(--text); padding: 0 0.12rem; border-radius: 0.25rem; }
button, input { font: inherit; }

.app-shell {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr) 320px;
  min-height: 100vh;
}
.sidebar, .rightbar {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  border-right: 1px solid var(--border);
  padding: 1rem;
}
.rightbar {
  border-right: none;
  border-left: 1px solid var(--border);
}
.main-pane {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at top, rgba(124, 156, 255, 0.08), transparent 35%);
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  width: min(55rem, 100%);
}
.search-form { width: min(38rem, 100%); margin: 0; }
.tabbar {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.01);
}
.tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 10px;
  padding: 0.55rem 0.8rem;
  white-space: nowrap;
  background: var(--surface);
  border: 1px solid transparent;
  color: var(--text);
}
.tab:hover { text-decoration: none; border-color: var(--border); }
.tab.is-active {
  background: var(--surface-soft);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(124, 156, 255, 0.22);
}
.tab-type {
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
}
.brand-sidebar { padding: 0.2rem 0 0.4rem; }
.brand-badge {
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #9b7cff);
  color: white;
  box-shadow: var(--shadow);
}
.search-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: 0.8rem 0.95rem;
  outline: none;
}
.search-input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.quick-switcher-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 12px;
  padding: 0.78rem 0.9rem;
  cursor: pointer;
  white-space: nowrap;
}
.quick-switcher-trigger:hover { border-color: var(--accent); }
.shortcut-hint {
  color: var(--muted);
  font-size: 0.82rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 0.18rem 0.45rem;
  background: rgba(255, 255, 255, 0.02);
}
.page { padding: 1.5rem; }
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 1rem; }
.panel-body { padding: 1rem 1.1rem; }
.panel-title { margin: 0; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.inspector-panel { overflow: hidden; }
.inspector-summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.inspector-summary::-webkit-details-marker { display: none; }
.inspector-summary::after {
  content: '+';
  color: var(--muted);
  font-size: 1rem;
}
.inspector-panel[open] > .inspector-summary::after { content: '−'; }
.inspector-panel > .panel-body {
  padding-top: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.nav-list, .meta-list, .activity-list, .result-list, .tree-list, .backlink-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list li, .meta-list li, .activity-list li, .result-list li, .tree-list li, .backlink-list li {
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.nav-list li:last-child, .meta-list li:last-child, .activity-list li:last-child, .result-list li:last-child, .tree-list li:last-child, .backlink-list li:last-child {
  border-bottom: none;
}
.nav-list li.is-active > a, .tree-leaf.is-active > a { color: white; font-weight: 700; }
.nav-section-title {
  margin: 1rem 0 0.45rem;
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.note-header { margin-bottom: 1rem; }
.note-title { margin: 0; font-size: clamp(1.6rem, 2vw, 2.35rem); }
.note-subtitle { color: var(--muted); margin-top: 0.45rem; }
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 1rem;
}
.breadcrumbs span { color: var(--muted); }
.content-grid { display: grid; gap: 1rem; }
.note-content { background: transparent; }
.properties-block {
  margin: 1rem 0 1.5rem;
  padding: 1rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
}
.properties-title {
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.85rem;
}
.property-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  margin: 0;
}
.property-row {
  padding: 0.8rem 0.9rem;
  border-radius: 12px;
  background: var(--surface-muted);
  border: 1px solid rgba(255, 255, 255, 0.04);
}
.property-row dt {
  margin: 0 0 0.45rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.property-row dd { margin: 0; }
.property-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  background: var(--accent-soft);
  color: var(--text);
  font-size: 0.84rem;
}
.pill-muted { background: rgba(255, 255, 255, 0.06); }
.property-json {
  margin: 0;
  max-height: 14rem;
}
.rendered-markdown {
  line-height: 1.72;
  color: var(--text);
  font-size: 1.02rem;
}
.rendered-markdown h1,
.rendered-markdown h2,
.rendered-markdown h3,
.rendered-markdown h4 {
  margin-top: 1.6rem;
  margin-bottom: 0.7rem;
  line-height: 1.25;
}
.rendered-markdown h2,
.rendered-markdown h3 { border-bottom: 1px solid rgba(255, 255, 255, 0.06); padding-bottom: 0.35rem; }
.rendered-markdown p,
.rendered-markdown ul,
.rendered-markdown ol,
.rendered-markdown blockquote,
.rendered-markdown table { margin: 0.8rem 0; }
.rendered-markdown blockquote {
  margin-left: 0;
  padding: 0.1rem 1rem;
  border-left: 3px solid var(--accent);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 0 10px 10px 0;
}
.rendered-markdown .callout {
  margin: 1rem 0;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}
.rendered-markdown .callout blockquote { margin: 0; border-left: none; background: transparent; padding: 0; }
.rendered-markdown .callout-note { box-shadow: inset 0 0 0 1px rgba(124, 156, 255, 0.14); }
.rendered-markdown .callout-warning { box-shadow: inset 0 0 0 1px rgba(230, 193, 90, 0.18); }
.rendered-markdown .callout-danger { box-shadow: inset 0 0 0 1px rgba(255, 143, 143, 0.18); }
.rendered-markdown .callout-tip { box-shadow: inset 0 0 0 1px rgba(123, 216, 143, 0.18); }
.rendered-markdown table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.02);
}
.rendered-markdown th, .rendered-markdown td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: left;
}
.rendered-markdown img {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
}
.stat-card {
  padding: 0.95rem;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
}
.stat-label { color: var(--muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.07em; }
.stat-value { font-size: 1.45rem; font-weight: 700; margin-top: 0.35rem; }
.muted { color: var(--muted); }
.small { font-size: 0.9rem; }
.empty-state { color: var(--muted); font-style: italic; }
.file-icon { color: var(--muted); margin-right: 0.45rem; }
.tree-root, .tree-children { list-style: none; margin: 0; padding-left: 0.25rem; }
.tree-node + .tree-node { margin-top: 0.2rem; }
.tree-details summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0;
}
.tree-details summary::-webkit-details-marker { display: none; }
.tree-details summary::before {
  content: '▸';
  color: var(--muted);
  font-size: 0.8rem;
  transform: translateY(-1px);
}
.tree-details[open] > summary::before { content: '▾'; }
.tree-branch {
  margin-left: 0.85rem;
  border-left: 1px dashed rgba(255, 255, 255, 0.08);
  padding-left: 0.7rem;
}
.tree-files,
.tree-children { margin-left: 0; }
.tree-leaf { padding: 0.2rem 0; }
.tree-leaf a, .tree-details summary a { color: var(--text); }
.tree-leaf.is-active {
  background: rgba(124, 156, 255, 0.10);
  border-radius: 8px;
  padding-left: 0.35rem;
}
.quick-switcher-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: start center;
  padding: 8vh 1rem 1rem;
}
.quick-switcher-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 10, 14, 0.72);
  backdrop-filter: blur(8px);
}
.quick-switcher-dialog {
  position: relative;
  z-index: 1;
  width: min(46rem, 100%);
}
.quick-switcher-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
}
.quick-switcher-close {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 10px;
  width: 2rem;
  height: 2rem;
  cursor: pointer;
}
.quick-switcher-close:hover { color: var(--text); border-color: var(--accent); }
.quick-switcher-input { margin-bottom: 0.9rem; }
.quick-switcher-list {
  display: grid;
  gap: 0.45rem;
  max-height: min(60vh, 34rem);
  overflow: auto;
}
.quick-switcher-item {
  display: block;
  padding: 0.85rem 0.95rem;
  border-radius: 12px;
  border: 1px solid transparent;
  background: var(--surface-muted);
  color: var(--text);
}
.quick-switcher-item:hover,
.quick-switcher-item.is-selected,
.quick-switcher-item.is-active {
  text-decoration: none;
  border-color: var(--accent);
  background: rgba(124, 156, 255, 0.10);
}
.quick-switcher-item-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.3rem;
}
.quick-switcher-item-title { font-weight: 700; }
.quick-switcher-item-type {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.quick-switcher-empty {
  padding: 1rem 0.2rem 0.35rem;
}

@media (max-width: 1160px) {
  .app-shell { grid-template-columns: 260px minmax(0, 1fr); }
  .rightbar { display: none; }
}

@media (max-width: 980px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .topbar-actions { width: 100%; flex-direction: column; align-items: stretch; }
  .search-form { width: 100%; }
  .quick-switcher-trigger { justify-content: space-between; }
}

@media (max-width: 820px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar, .rightbar { display: none; }
  .page { padding: 1rem; }
  .topbar { padding: 0.9rem 1rem; }
  .tabbar { padding: 0.6rem 0.75rem; }
  .property-grid { grid-template-columns: 1fr; }
}