/* ══════════════════════════════════════════════════════════════════════════
   Section 1 — Design Tokens & Reset
   ══════════════════════════════════════════════════════════════════════════ */
:root {
  --background:   hsl(0 0% 97%);
  --foreground:   hsl(0 0% 9%);
  --card:         hsl(0 0% 100%);
  --secondary:    hsl(0 0% 96%);
  --muted:        hsl(0 0% 93%);
  --muted-fg:     hsl(220 9% 46%);
  --border:       hsl(0 0% 90%);
  --primary:      hsl(263 70% 58%);
  --primary-fg:   hsl(0 0% 100%);
  --success:      hsl(142 72% 37%);
  --warning:      hsl(38 92% 50%);
  --destructive:  hsl(0 72% 51%);
  --code:         hsl(263 56% 35%);
  --radius:       2px;
}

/* Dark mode tokens — applied when <html> has class "dark" */
html.dark {
  --background:  hsl(0 0% 8%);
  --foreground:  hsl(0 0% 93%);
  --card:        hsl(0 0% 11%);
  --secondary:   hsl(0 0% 14%);
  --muted:       hsl(0 0% 17%);
  --muted-fg:    hsl(220 9% 58%);
  --border:      hsl(0 0% 20%);
  --primary:     hsl(263 70% 65%);
  --success:     hsl(142 60% 45%);
  --warning:     hsl(38 92% 55%);
  --destructive: hsl(0 72% 60%);
  --code:        hsl(263 60% 72%);
}

/* Also honour OS preference when user hasn't manually overridden */
@media (prefers-color-scheme: dark) {
  html:not(.light) {
    --background:  hsl(0 0% 8%);
    --foreground:  hsl(0 0% 93%);
    --card:        hsl(0 0% 11%);
    --secondary:   hsl(0 0% 14%);
    --muted:       hsl(0 0% 17%);
    --muted-fg:    hsl(220 9% 58%);
    --border:      hsl(0 0% 20%);
    --primary:     hsl(263 70% 65%);
    --success:     hsl(142 60% 45%);
    --warning:     hsl(38 92% 55%);
    --destructive: hsl(0 72% 60%);
    --code:        hsl(263 60% 72%);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.4;
  background-color: var(--background);
  color: var(--foreground);
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 2 — Layout
   ══════════════════════════════════════════════════════════════════════════ */
.container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.main-content {
  flex: 1;
  overflow: hidden;
  display: flex;
}

.tree-pane {
  width: 300px;
  border-right: 1px solid var(--border);
  background: var(--card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.detail-pane {
  flex: 1;
  overflow-y: auto;
  background: var(--background);
  padding: 24px;
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 3 — Top Bar
   ══════════════════════════════════════════════════════════════════════════ */
.top-bar {
  height: 48px;
  border-bottom: 1px solid var(--border);
  background: var(--card);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
}

.top-bar-logo {
  height: 32px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.top-bar h1 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--foreground);
  white-space: nowrap;
}

.top-bar-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.branch-chip {
  display: inline-flex;
  align-items: center;
}

.branch-indicator {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--muted-fg);
  border: 1px solid var(--border);
  background: var(--secondary);
  padding: 2px 8px;
  border-radius: var(--radius);
  white-space: nowrap;
}

.branch-indicator.draft { color: var(--primary); border-color: color-mix(in srgb, var(--primary) 40%, transparent); }
.branch-indicator.main  { color: var(--muted-fg); }

.top-bar-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex: 1;
}

.root-filter {
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  background: var(--secondary);
  color: var(--foreground);
  cursor: pointer;
  min-width: 160px;
  font-family: inherit;
}

.root-filter:focus {
  outline: none;
  box-shadow: 0 0 0 1px var(--primary);
  border-color: var(--primary);
}

.search-input {
  height: 32px;
  width: 200px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 10px;
  background: var(--secondary);
  font-size: 13px;
  font-family: inherit;
  color: var(--foreground);
}

.search-input:focus {
  outline: none;
  box-shadow: 0 0 0 1px var(--primary);
  border-color: var(--primary);
}

/* ── User Menu ───────────────────────────────────────────────────────────── */
.user-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 6px;
}

.user-name {
  font-size: 13px;
  color: var(--foreground);
  font-weight: 500;
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 4 — Buttons
   ══════════════════════════════════════════════════════════════════════════ */
.btn {
  height: 32px;
  padding: 0 12px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  white-space: nowrap;
  transition: background-color 0.1s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-fg);
  border-color: var(--primary);
}

.btn-primary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--primary) 88%, black);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--foreground);
  border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--muted);
}

.btn-danger {
  background: transparent;
  color: var(--destructive);
  border-color: color-mix(in srgb, var(--destructive) 30%, transparent);
}

.btn-danger:hover:not(:disabled) {
  background: color-mix(in srgb, var(--destructive) 8%, transparent);
}

.btn-success {
  background: var(--success);
  color: var(--primary-fg);
  border-color: var(--success);
}

.btn-success:hover:not(:disabled) {
  background: color-mix(in srgb, var(--success) 88%, black);
}

.btn-promote {
  background: var(--primary);
  color: var(--primary-fg);
  border-color: var(--primary);
}

.btn-promote:hover:not(:disabled) {
  background: color-mix(in srgb, var(--primary) 88%, black);
}

.btn-sm {
  height: 28px;
  padding: 0 10px;
  font-size: 11px;
}

.btn-small {
  height: 26px;
  padding: 0 8px;
  font-size: 11px;
  flex-shrink: 0;
}

.btn-remove-parent {
  background: var(--secondary);
  color: var(--muted-fg);
  border-color: var(--border);
}

.btn-remove-parent:hover:not(:disabled) {
  background: var(--muted);
  color: var(--destructive);
}

.button-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 5 — Tree Pane
   ══════════════════════════════════════════════════════════════════════════ */
.tree-pane h2 {
  height: 40px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  flex-shrink: 0;
}

.tree-container {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
}

.tree-node {
  margin: 0;
}

.tree-node-header {
  display: flex;
  align-items: center;
  padding: 6px 12px;
  cursor: pointer;
  gap: 4px;
  user-select: none;
  border-left: 2px solid transparent;
}

.tree-node-header:hover {
  background: var(--muted);
}

.tree-node-header.expanded {
  border-left-color: var(--primary);
  background: var(--muted);
  padding-left: 10px;
}

.tree-node-toggle {
  width: 16px;
  text-align: center;
  color: var(--muted-fg);
  font-size: 10px;
  flex-shrink: 0;
}

.tree-node-toggle::before {
  content: '▶';
  display: inline-block;
  transition: transform 0.15s;
}

.tree-node-header.expanded .tree-node-toggle::before {
  transform: rotate(90deg);
}

.tree-node-label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.tree-node-name {
  font-size: 13px;
  color: var(--foreground);
  flex: 1;
  word-break: break-word;
}

.tree-node-name.deprecated {
  text-decoration: line-through;
  color: var(--muted-fg);
}

.tree-node-count {
  font-size: 11px;
  color: var(--muted-fg);
  flex-shrink: 0;
}

.tree-node-children {
  margin-left: 16px;
  display: none;
}

.tree-node-header.expanded + .tree-node-children {
  display: block;
}

/* Tree badges */
.tree-node-badges {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}

.tree-node-badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1px 4px;
  border-radius: var(--radius);
  font-weight: 500;
  display: inline-block;
}

.badge-deprecated {
  background: var(--muted);
  color: var(--muted-fg);
}

.badge-changed {
  background: color-mix(in srgb, var(--warning) 15%, transparent);
  color: var(--warning);
}

.badge-beta {
  background: color-mix(in srgb, var(--warning) 15%, transparent);
  color: var(--warning);
  border: 1px solid color-mix(in srgb, var(--warning) 30%, transparent);
}

/* Beta node — no special row tinting (handled by badge) */
.tree-node-beta > .tree-node-header { }
.tree-node-beta > .tree-node-header:hover { background: var(--muted); }

/* ══════════════════════════════════════════════════════════════════════════
   Section 6 — Detail Pane / Node Detail
   ══════════════════════════════════════════════════════════════════════════ */
.node-detail {
  max-width: 768px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.placeholder {
  color: var(--muted-fg);
  font-style: italic;
  text-align: center;
  padding: 64px 0;
}

.loading {
  padding: 32px;
  text-align: center;
  color: var(--muted-fg);
}

.node-detail-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}

.node-detail-header h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.node-iri {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--code);
  word-break: break-all;
  cursor: pointer;
  margin-bottom: 8px;
}

.node-iri:hover {
  text-decoration: underline;
}

.detail-section {
  margin-bottom: 0;
}

.detail-section h3 {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  margin-bottom: 12px;
}

.detail-field {
  margin-bottom: 12px;
  position: relative;
}

.detail-field label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  font-weight: 500;
  margin-bottom: 4px;
}

.detail-field input,
.detail-field textarea {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: inherit;
  background: var(--secondary);
  color: var(--foreground);
}

.detail-field textarea {
  min-height: 80px;
  resize: vertical;
}

.detail-field input:focus,
.detail-field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
  background: var(--card);
}

.detail-hint {
  font-size: 11px;
  color: var(--muted-fg);
  margin-bottom: 6px;
}

.field-readonly {
  padding: 6px 8px;
  background: var(--secondary);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--foreground);
  min-height: 2rem;
  border: 1px solid var(--border);
}

.label-hint {
  font-weight: normal;
  font-size: 11px;
  color: var(--muted-fg);
  text-transform: none;
  letter-spacing: 0;
}

/* Parents list */
.parent-list {
  list-style: none;
}

.parent-list li {
  padding: 6px 8px;
  background: var(--secondary);
  border-radius: var(--radius);
  margin-bottom: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--code);
  word-break: break-all;
  border: 1px solid var(--border);
}

.parent-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.parent-item .parent-iri {
  flex: 1;
  min-width: 0;
  word-break: break-all;
}

/* ── Status Badges (node detail header) ──────────────────────────────────── */
.status-badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: var(--radius);
  font-weight: 500;
  vertical-align: middle;
  margin-left: 8px;
  border-left: 2px solid transparent;
  display: inline-block;
}

.status-beta {
  border-left-color: var(--warning);
  background: color-mix(in srgb, var(--warning) 15%, transparent);
  color: var(--warning);
}

.status-production {
  border-left-color: var(--success);
  background: color-mix(in srgb, var(--success) 15%, transparent);
  color: var(--success);
}

.status-deprecated {
  border-left-color: var(--destructive);
  background: color-mix(in srgb, var(--destructive) 12%, transparent);
  color: var(--destructive);
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 7 — Role Badges
   ══════════════════════════════════════════════════════════════════════════ */
.role-badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: var(--radius);
  font-weight: 500;
  display: inline-block;
}

.role-admin       { background: color-mix(in srgb, var(--warning)     20%, transparent); color: var(--warning); }
.role-editor      { background: color-mix(in srgb, var(--primary)     20%, transparent); color: var(--primary); }
.role-commentator { background: color-mix(in srgb, var(--primary)     15%, transparent); color: var(--primary); }
.role-reader      { background: var(--muted); color: var(--muted-fg); }

/* ══════════════════════════════════════════════════════════════════════════
   Section 8 — Login Overlay
   ══════════════════════════════════════════════════════════════════════════ */
.login-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--foreground) 40%, transparent);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.login-box {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 360px;
}

.login-close {
  position: absolute;
  top: 10px;
  right: 12px;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--muted-fg);
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
}

.login-close:hover {
  color: var(--foreground);
}

.login-box h1 {
  font-size: 16px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.login-subtitle {
  color: var(--muted-fg);
  margin-bottom: 24px;
  font-size: 13px;
}

.login-field {
  margin-bottom: 12px;
}

.login-field label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
  color: var(--muted-fg);
}

.login-field input {
  width: 100%;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--card);
  color: var(--foreground);
  font-family: inherit;
}

.login-field input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.login-submit {
  width: 100%;
  height: 36px;
  margin-top: 8px;
  font-size: 13px;
}

.login-error {
  background: color-mix(in srgb, var(--destructive) 10%, transparent);
  color: var(--destructive);
  border: 1px solid color-mix(in srgb, var(--destructive) 25%, transparent);
  border-radius: var(--radius);
  padding: 8px 10px;
  margin-bottom: 12px;
  font-size: 13px;
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 9 — Modals (Changes, Admin)
   ══════════════════════════════════════════════════════════════════════════ */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: color-mix(in srgb, var(--background) 80%, transparent);
  overflow: auto;
  backdrop-filter: blur(2px);
}

.modal-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 5% auto;
  padding: 24px;
  width: 90%;
  max-width: 640px;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
}

.modal-content h2 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

.close {
  position: absolute;
  right: 16px;
  top: 12px;
  font-size: 20px;
  font-weight: 400;
  color: var(--muted-fg);
  cursor: pointer;
  line-height: 1;
  border: none;
  background: none;
}

.close:hover { color: var(--foreground); }

/* Changes content */
.changes-content { margin-top: 8px; }

.changes-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.summary-card {
  background: var(--secondary);
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-left: 2px solid var(--primary);
}

.summary-card h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  font-weight: 500;
  margin-bottom: 6px;
}

.summary-card .count {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary);
}

.changes-section {
  margin-bottom: 20px;
}

.changes-section h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  font-weight: 500;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.changes-list { list-style: none; }

.changes-list li {
  padding: 8px 10px;
  margin-bottom: 4px;
  background: var(--secondary);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
}

.changes-list li:hover { background: var(--muted); }

.change-item-iri {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--muted-fg);
  margin-bottom: 2px;
}

.change-item-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--foreground);
}

/* ── Admin Overlay ───────────────────────────────────────────────────────── */
.admin-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--background) 80%, transparent);
  z-index: 1500;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
  padding: 24px 16px;
  backdrop-filter: blur(2px);
}

.admin-overlay-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 900px;
  position: relative;
}

.admin-close-btn {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--muted-fg);
  line-height: 1;
}

.admin-close-btn:hover { color: var(--foreground); }

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.admin-panel-content h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

/* Users table */
.users-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-top: 8px;
}

.users-table th,
.users-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.users-table th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  font-weight: 500;
  background: var(--secondary);
}

.user-inactive { opacity: 0.5; }

.badge-active   { background: color-mix(in srgb, var(--success) 15%, transparent); color: var(--success); padding: 2px 6px; border-radius: var(--radius); font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }
.badge-inactive { background: color-mix(in srgb, var(--destructive) 12%, transparent); color: var(--destructive); padding: 2px 6px; border-radius: var(--radius); font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }

.role-select {
  height: 28px;
  padding: 0 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  background: var(--secondary);
  color: var(--foreground);
  font-family: inherit;
}

.user-actions { display: flex; gap: 4px; flex-wrap: wrap; }

/* Create user form */
.create-user-form {
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
}

.create-user-form h3 {
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.form-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
}

.form-row input,
.form-row select {
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--card);
  color: var(--foreground);
  font-family: inherit;
}

.form-row input:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.form-actions { display: flex; gap: 6px; }

.form-error {
  background: color-mix(in srgb, var(--destructive) 10%, transparent);
  color: var(--destructive);
  border: 1px solid color-mix(in srgb, var(--destructive) 25%, transparent);
  border-radius: var(--radius);
  padding: 8px 10px;
  margin-top: 10px;
  font-size: 13px;
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 10 — Comments Panel
   ══════════════════════════════════════════════════════════════════════════ */
.comments-section {
  margin-top: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.comments-heading {
  font-size: 13px;
  font-weight: 500;
  color: var(--foreground);
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.comment-count-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  background: var(--secondary);
  color: var(--muted-fg);
  font-weight: 500;
  border: 1px solid var(--border);
}

.comments-list {
  display: flex;
  flex-direction: column;
}

.comments-loading,
.comments-error { padding: 12px; font-size: 13px; color: var(--muted-fg); }

.comment-item {
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

.comment-item:last-child { border-bottom: none; }

.comment-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.comment-author {
  font-weight: 600;
  font-size: 13px;
  color: var(--foreground);
}

.comment-date {
  font-size: 11px;
  color: var(--muted-fg);
  margin-left: auto;
}

.comment-target {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: var(--radius);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--secondary);
  border: 1px solid var(--border);
  color: var(--muted-fg);
}

.target-label      { background: color-mix(in srgb, var(--primary) 12%, transparent); color: var(--primary); border-color: color-mix(in srgb, var(--primary) 25%, transparent); }
.target-definition { background: color-mix(in srgb, var(--success) 12%, transparent); color: var(--success); border-color: color-mix(in srgb, var(--success) 25%, transparent); }
.target-general    { background: var(--secondary); color: var(--muted-fg); }

.comment-body {
  font-size: 13px;
  color: var(--foreground);
  line-height: 1.5;
  white-space: pre-wrap;
}

.comment-actions { display: flex; gap: 4px; margin-left: auto; }

.btn-comment-edit,
.btn-comment-delete,
.btn-comment-save,
.btn-comment-cancel {
  height: 24px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 11px;
  cursor: pointer;
  color: var(--muted-fg);
  background: var(--secondary);
  font-family: inherit;
}

.btn-comment-delete { color: var(--destructive); border-color: color-mix(in srgb, var(--destructive) 25%, transparent); background: transparent; }
.btn-comment-save   { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }

.comment-edit-textarea {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  font-size: 13px;
  resize: vertical;
  min-height: 60px;
  margin-top: 8px;
  background: var(--card);
  color: var(--foreground);
  font-family: inherit;
}

.comment-edit-btns { display: flex; gap: 4px; margin-top: 6px; }

.no-comments {
  color: var(--muted-fg);
  font-style: italic;
  font-size: 13px;
  padding: 12px;
}

.add-comment-form {
  border-top: 1px solid var(--border);
  padding: 12px;
}

.add-comment-form h4 {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  margin-bottom: 10px;
}

.comment-form-row {
  margin-bottom: 8px;
  font-size: 13px;
}

.comment-form-row label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.comment-target-select {
  height: 28px;
  padding: 0 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  background: var(--secondary);
  color: var(--foreground);
  font-family: inherit;
}

.comment-textarea {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  resize: vertical;
  margin-bottom: 8px;
  font-family: inherit;
  background: var(--card);
  color: var(--foreground);
}

.comment-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 11 — Search Results
   ══════════════════════════════════════════════════════════════════════════ */
.search-results {
  padding: 0;
}

.search-results h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  font-weight: 500;
  margin-bottom: 12px;
}

.search-result-item {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  background: var(--card);
}

.search-result-item:first-of-type { border-top: 1px solid var(--border); }
.search-result-item:hover { background: var(--muted); }

/* ══════════════════════════════════════════════════════════════════════════
   Section 12 — Status Messages & Loading
   ══════════════════════════════════════════════════════════════════════════ */
.status-message {
  position: fixed;
  top: 60px;
  right: 16px;
  z-index: 3000;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--foreground);
  max-width: 320px;
  animation: slideIn 0.2s ease-out;
}

.status-success {
  border-left: 2px solid var(--success);
  color: var(--success);
}

.status-error {
  border-left: 2px solid var(--destructive);
  color: var(--destructive);
}

.status-info {
  border-left: 2px solid var(--primary);
  color: var(--primary);
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(12px); }
  to   { opacity: 1; transform: translateX(0); }
}

.btn-detached {
  opacity: 0.5;
  font-style: italic;
  cursor: default;
  pointer-events: none;
}

/* ── Hidden categories ───────────────────────────────────────────────────── */

.node-hidden > .tree-node-header .tree-node-label {
  opacity: 0.45;
  font-style: italic;
}

.btn-hide {
  background: #e67e22;
  color: #fff;
  border-color: #e67e22;
}

.btn-hide:hover:not(:disabled) {
  background: color-mix(in srgb, #e67e22 88%, black);
}

.btn-show {
  background: #27ae60;
  color: #fff;
  border-color: #27ae60;
}

.btn-show:hover:not(:disabled) {
  background: color-mix(in srgb, #27ae60 88%, black);
}

/* ══════════════════════════════════════════════════════════════════════════
   Section 13 — RFC Banner
   ══════════════════════════════════════════════════════════════════════════ */
:root { --rfc: hsl(185 70% 41%); }
html.dark { --rfc: hsl(185 65% 52%); }
@media (prefers-color-scheme: dark) { html:not(.light) { --rfc: hsl(185 65% 52%); } }

.rfc-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 16px;
  height: 40px;
  border-bottom: 1px solid color-mix(in srgb, var(--rfc) 30%, transparent);
  background: color-mix(in srgb, var(--rfc) 8%, var(--card));
  border-left: 3px solid var(--rfc);
  flex-shrink: 0;
  animation: rfcSlideDown 0.2s ease-out;
}

@keyframes rfcSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.rfc-banner-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.rfc-banner-icon {
  color: var(--rfc);
  font-size: 8px;
  flex-shrink: 0;
}

.rfc-banner-text {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
  flex-wrap: wrap;
}

.rfc-banner-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--rfc);
  flex-shrink: 0;
  padding: 1px 5px;
  background: color-mix(in srgb, var(--rfc) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--rfc) 25%, transparent);
  border-radius: var(--radius);
}

.rfc-banner-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rfc-banner-description {
  font-size: 12px;
  color: var(--muted-fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rfc-banner-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.rfc-banner-deadline {
  font-size: 12px;
  color: var(--muted-fg);
  white-space: nowrap;
}

.rfc-banner-deadline strong {
  color: var(--foreground);
  font-weight: 600;
}

.rfc-banner-countdown {
  color: var(--rfc);
  font-weight: 500;
}

.rfc-banner-category {
  font-size: 11px;
  font-weight: 600;
  color: var(--rfc);
  background: color-mix(in srgb, var(--rfc) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--rfc) 30%, transparent);
  border-radius: var(--radius);
  padding: 1px 6px;
  white-space: nowrap;
}

.rfc-banner-cta {
  background: var(--rfc);
  color: #fff;
  border-color: var(--rfc);
  font-size: 11px;
}

.rfc-banner-cta:hover:not(:disabled) {
  background: color-mix(in srgb, var(--rfc) 88%, black);
  border-color: color-mix(in srgb, var(--rfc) 88%, black);
}

.rfc-banner-dismiss {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--muted-fg);
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  flex-shrink: 0;
}

.rfc-banner-dismiss:hover {
  color: var(--foreground);
}

@media (max-width: 900px) {
  .rfc-banner-description { display: none; }
}
@media (max-width: 680px) {
  .rfc-banner-deadline { display: none; }
}
