:root {
  /* Obsidian-ish dark theme */
  --bg: #151517;
  --bg-elevated: #1c1c21;
  --bg-sunken: #0f0f11;
  --border: #2a2a2e;
  --border-subtle: #222226;
  --text: #e8e8ea;
  --text-muted: #8b8b94;
  --text-faint: #555560;
  --accent: #7c9fd9;
  --accent-dim: #4d6c9c;

  /* node group colors */
  --g-server: #e27e7e;
  --g-vm: #e2a97e;
  --g-lxc: #d9c27c;
  --g-service: #8fc792;
  --g-db: #b486c7;
  --g-network: #7ab2c7;
  --g-domain: #c78da0;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  overflow: hidden;
}

body {
  display: grid;
  grid-template-columns: 220px 1fr 300px;
  grid-template-rows: 48px 1fr 28px;
  grid-template-areas:
    "top top top"
    "legend graph detail"
    "status status status";
}

.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand .logo {
  color: var(--accent);
  font-size: 18px;
}

.brand h1 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

.brand .subtitle {
  color: var(--text-muted);
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
}

.actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  font: inherit;
  font-size: 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn:hover {
  border-color: var(--accent-dim);
  background: var(--bg-elevated);
}

.btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

#search {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  font: inherit;
  font-size: 12px;
  border-radius: 6px;
  width: 180px;
  transition: border-color 0.15s;
}

#search:focus {
  outline: none;
  border-color: var(--accent);
}

.legend {
  grid-area: legend;
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  padding: 16px 14px;
  overflow-y: auto;
}

.legend h3 {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 8px 0;
}

.legend h3:not(:first-child) {
  margin-top: 20px;
}

.legend ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 12px;
  color: var(--text-muted);
}

.swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.swatch[data-group="server"] { background: var(--g-server); }
.swatch[data-group="vm"] { background: var(--g-vm); }
.swatch[data-group="lxc"] { background: var(--g-lxc); }
.swatch[data-group="service"] { background: var(--g-service); }
.swatch[data-group="db"] { background: var(--g-db); }
.swatch[data-group="network"] { background: var(--g-network); }
.swatch[data-group="domain"] { background: var(--g-domain); }

#filter-buttons {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text);
  padding: 4px 8px;
  font-size: 11px;
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

.filter-btn:hover { background: var(--bg-sunken); }

.filter-btn.off {
  opacity: 0.4;
  text-decoration: line-through;
}

.detail {
  grid-area: detail;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border);
  padding: 20px 16px;
  overflow-y: auto;
}

.detail-empty {
  color: var(--text-faint);
  font-size: 13px;
  font-style: italic;
  text-align: center;
  margin-top: 40px;
}

.detail h2 {
  font-size: 16px;
  margin: 0 0 4px 0;
  letter-spacing: -0.01em;
}

.detail .node-group {
  display: inline-block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 2px 6px;
  border-radius: 3px;
  margin-bottom: 12px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
}

.detail pre {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  padding: 8px 10px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
  white-space: pre-wrap;
  margin: 8px 0;
  line-height: 1.5;
}

.detail h3 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 16px 0 6px 0;
}

.detail ul.conn-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.detail ul.conn-list li {
  font-size: 12px;
  padding: 4px 8px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 3px;
  font-family: 'JetBrains Mono', monospace;
  cursor: pointer;
  transition: border-color 0.15s;
}

.detail ul.conn-list li:hover {
  border-color: var(--accent);
}

.detail ul.conn-list .edge-type {
  display: inline-block;
  color: var(--text-faint);
  font-size: 10px;
  padding: 0 4px;
}

.detail a {
  color: var(--accent);
  text-decoration: none;
  font-size: 12px;
}

.detail a:hover { text-decoration: underline; }

.siyuan-content {
  margin: 12px 0;
  padding: 12px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text);
}

.siyuan-content h2, .siyuan-content h3, .siyuan-content h4 {
  margin: 8px 0 4px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.siyuan-content h2 { font-size: 14px; }
.siyuan-content p { margin: 6px 0; color: var(--text-muted); }
.siyuan-content ul { margin: 4px 0; padding-left: 18px; }
.siyuan-content li { color: var(--text-muted); padding: 1px 0; }

.siyuan-content code {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
}

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

.siyuan-content pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  margin: 6px 0;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text);
}

.siyuan-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: 11px;
}

.siyuan-content table {
  border-collapse: collapse;
  font-size: 11px;
  margin: 6px 0;
  width: 100%;
}

.siyuan-content th, .siyuan-content td {
  border: 1px solid var(--border);
  padding: 4px 8px;
  text-align: left;
}

.siyuan-content th {
  background: var(--bg);
  color: var(--text);
  font-weight: 600;
}

.siyuan-content td { color: var(--text-muted); }

.siyuan-content blockquote {
  border-left: 3px solid var(--accent-dim);
  margin: 6px 0;
  padding: 2px 10px;
  color: var(--text-muted);
  font-style: italic;
}

.siyuan-content img {
  max-width: 100%;
  border-radius: 4px;
  margin: 6px 0;
}

.siyuan-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 10px 0;
}

.siyuan-content .loading {
  color: var(--text-faint);
  font-size: 12px;
}

.siyuan-edit {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 11px !important;
  transition: border-color 0.15s;
}

.siyuan-edit:hover {
  border-color: var(--accent) !important;
  text-decoration: none !important;
}

#graph {
  grid-area: graph;
  background: var(--bg);
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0; /* essential for grid children to respect parent height */
  overflow: hidden;
  /* subtle grid background */
  background-image:
    radial-gradient(circle, var(--border-subtle) 1px, transparent 1px);
  background-size: 40px 40px;
}

#graph canvas {
  outline: none;
}

#error-box {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  padding: 12px 16px;
  background: rgba(226, 126, 126, 0.15);
  border: 1px solid var(--g-server);
  border-radius: 6px;
  color: var(--g-server);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  display: none;
  z-index: 100;
}

.statusbar {
  grid-area: status;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 16px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

#status-indicator {
  color: var(--g-service);
  font-size: 14px;
}

#status-indicator.offline {
  color: var(--g-server);
}

/* vis-network overrides */
.vis-network {
  outline: none;
}

.vis-tooltip {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 11px !important;
  padding: 8px 10px !important;
  border-radius: 4px !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4) !important;
  white-space: pre !important;
}