/* ─── Theme Variables ─── */
[data-theme="dark"] {
  --bg: #0c0e16;
  --surface: #141620;
  --surface-raised: #1b1d2a;
  --surface-hover: #242738;
  --border: #2c3048;
  --border-subtle: #21243a;
  --text: #cbd0e0;
  --text-secondary: #838898;
  --text-muted: #4c5068;
  --accent: #8b7cf7;
  --accent-hover: #9d90fa;
  --accent-dim: #7668e0;
  --accent-bg: rgba(139, 124, 247, 0.08);
  --accent-border: rgba(139, 124, 247, 0.22);
  --error: #e55565;
  --error-bg: rgba(229, 85, 101, 0.08);
  --success: #50c880;
  --success-bg: rgba(80, 200, 128, 0.08);
  --warning: #e8b84a;
  --warning-bg: rgba(232, 184, 74, 0.08);
  --info: #5a9ef5;
  --info-bg: rgba(90, 158, 245, 0.08);
  --diff-add: rgba(80, 200, 128, 0.12);
  --diff-add-text: #50c880;
  --diff-remove: rgba(229, 85, 101, 0.12);
  --diff-remove-text: #e55565;
  --diff-change: rgba(232, 184, 74, 0.12);
  --diff-change-text: #e8b84a;
  --sidebar-bg: #10122000;
  --sidebar-active: rgba(139, 124, 247, 0.1);
  --topbar-bg: #12141e;
  --modal-bg: #181a28;
  --modal-overlay: rgba(0, 0, 0, 0.7);
  --scrollbar-thumb: #2c3048;
  --scrollbar-track: transparent;
  --tree-line: #353a52;
  --key-color: #7aacf5;
  --string-color: #50c898;
  --number-color: #e8a44c;
  --bool-color: #e0709a;
  --null-color: #4c5068;
  --cm-bg: #141620;
}

[data-theme="light"] {
  --bg: #e8e9f0;
  --surface: #ffffff;
  --surface-raised: #f3f3f8;
  --surface-hover: #eaebf2;
  --border: #d6d8e0;
  --border-subtle: #e2e3ec;
  --text: #1c1e24;
  --text-secondary: #4a4d58;
  --text-muted: #8c8f98;
  --accent: #6d4de6;
  --accent-hover: #5c3cd4;
  --accent-dim: #7e5ef0;
  --accent-bg: rgba(109, 77, 230, 0.06);
  --accent-border: rgba(109, 77, 230, 0.2);
  --error: #c8303e;
  --error-bg: rgba(200, 48, 62, 0.06);
  --success: #1e8a50;
  --success-bg: rgba(30, 138, 80, 0.06);
  --warning: #b88a18;
  --warning-bg: rgba(184, 138, 24, 0.06);
  --info: #2060c0;
  --info-bg: rgba(32, 96, 192, 0.06);
  --diff-add: rgba(30, 138, 80, 0.1);
  --diff-add-text: #1e8a50;
  --diff-remove: rgba(200, 48, 62, 0.1);
  --diff-remove-text: #c8303e;
  --diff-change: rgba(184, 138, 24, 0.1);
  --diff-change-text: #b88a18;
  --sidebar-bg: #ffffff;
  --sidebar-active: rgba(109, 77, 230, 0.08);
  --topbar-bg: #ffffff;
  --modal-bg: #ffffff;
  --modal-overlay: rgba(0, 0, 0, 0.2);
  --scrollbar-thumb: #c2c4cc;
  --scrollbar-track: transparent;
  --tree-line: #bbbdc8;
  --key-color: #2060c0;
  --string-color: #1e8a50;
  --number-color: #c07820;
  --bool-color: #c03068;
  --null-color: #8c8f98;
  --cm-bg: #ffffff;
}

/* ─── Reset & Base ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── App Layout ─── */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ─── Top Bar ─── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 46px;
  padding: 0 16px;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
  z-index: 10;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.03em;
  text-shadow: 0 0 12px var(--accent-bg);
}

.app-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.app-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  padding-left: 10px;
  border-left: 1px solid var(--border);
}

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

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: 20px;
  cursor: help;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: none;
  border-radius: 6px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: var(--surface-raised);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--accent-border);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background: var(--surface-raised);
  color: var(--text);
}

.btn-sm { padding: 4px 10px; font-size: 11px; }

/* ─── Theme Toggle ─── */
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* ─── Main Layout ─── */
.main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ─── Mode Sidebar (vertical icon nav) ─── */
.mode-sidebar {
  width: 72px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 0;
  gap: 2px;
  flex-shrink: 0;
  overflow-y: auto;
}

.mode-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  width: 60px;
  padding: 8px 4px;
  border: none;
  border-left: 2px solid transparent;
  border-radius: 0 8px 8px 0;
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all 0.15s;
}

.mode-btn:hover {
  color: var(--text-secondary);
  background: var(--surface-hover);
}

.mode-btn.active {
  color: var(--accent);
  background: var(--sidebar-active);
  border-left-color: var(--accent);
}

.mode-btn svg {
  flex-shrink: 0;
}

/* ─── Workspace ─── */
.workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
  position: relative;
}

/* ─── Mode Panels ─── */
.mode-panel {
  display: none;
  flex: 1;
  flex-direction: column;
  overflow: hidden;
}

.mode-panel.active {
  display: flex;
}

.mode-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 13px;
  padding: 24px;
  text-align: center;
}

/* ─── Section Toolbar ─── */
.section-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 36px;
  padding: 0 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.section-label-sub {
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  font-size: 11px;
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ─── Editor Layout ─── */
.editor-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-wrap {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.editor-wrap .CodeMirror {
  height: 100%;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.65;
  padding: 4px 0;
  background: var(--cm-bg);
}

.editor-wrap .CodeMirror-gutters {
  background: var(--surface-raised);
  border-right: 1px solid var(--border-subtle);
}

.editor-wrap .CodeMirror-foldgutter {
  width: 14px;
}

[data-theme="light"] .editor-wrap .CodeMirror {
  color: var(--text);
}

[data-theme="light"] .editor-wrap .CodeMirror-linenumber {
  color: var(--text-muted);
}

[data-theme="light"] .editor-wrap .CodeMirror-activeline-background {
  background: var(--accent-bg);
}

[data-theme="light"] .editor-wrap .CodeMirror-cursor {
  border-left-color: var(--text);
}

[data-theme="light"] .editor-wrap .CodeMirror-selected {
  background: rgba(109, 77, 230, 0.12);
}

[data-theme="light"] .editor-wrap .CodeMirror-gutters {
  background: var(--surface-raised);
}

/* CM syntax overrides — dark */
[data-theme="dark"] .editor-wrap .cm-s-material-darker .cm-string { color: #50c898; }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .cm-number { color: #e8a44c; }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .cm-keyword { color: #e0709a; }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .cm-atom { color: #e0709a; }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .cm-property { color: #7aacf5; }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .CodeMirror-cursor { border-left-color: var(--accent); }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .CodeMirror-activeline-background { background: rgba(139, 124, 247, 0.04); }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .CodeMirror-selected { background: rgba(139, 124, 247, 0.15); }
[data-theme="dark"] .editor-wrap .cm-s-material-darker .CodeMirror-linenumber { color: var(--text-muted); }

/* CM syntax overrides — light */
[data-theme="light"] .editor-wrap .cm-string { color: #1e8a50; }
[data-theme="light"] .editor-wrap .cm-number { color: #c07820; }
[data-theme="light"] .editor-wrap .cm-keyword { color: #c03068; }
[data-theme="light"] .editor-wrap .cm-atom { color: #c03068; }
[data-theme="light"] .editor-wrap .cm-property { color: #2060c0; }

.editor-statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 26px;
  padding: 0 12px;
  background: var(--surface);
  border-top: 1px solid var(--border-subtle);
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  flex-shrink: 0;
}

#editorStatus.error { color: var(--error); }
#editorStatus.valid { color: var(--success); }

/* ─── Tree Explorer ─── */
.tree-container {
  flex: 1;
  overflow: auto;
  padding: 8px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.7;
}

.tree-search-input {
  width: 140px;
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface-raised);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  outline: none;
  transition: border-color 0.15s;
}

.tree-search-input:focus {
  border-color: var(--accent);
}

.tree-node {
  padding-left: 0;
  position: relative;
}

.tree-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding: 1px 12px 1px 0;
  cursor: default;
  border-radius: 3px;
  transition: background 0.1s;
  position: relative;
}

/* Indent guides rendered inline */
.tree-indent {
  display: inline-flex;
  align-items: stretch;
  flex-shrink: 0;
  height: 100%;
}

.tree-guide {
  display: inline-block;
  width: 20px;
  flex-shrink: 0;
  position: relative;
  align-self: stretch;
}

/* Vertical pipe: │ */
.tree-guide.pipe::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 1.5px;
  background: var(--tree-line);
}

/* Tee connector: ├── */
.tree-guide.tee::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 1.5px;
  background: var(--tree-line);
}
.tree-guide.tee::after {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--tree-line);
}

/* Elbow (last child): └── */
.tree-guide.elbow::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  height: 50%;
  width: 1.5px;
  background: var(--tree-line);
}
.tree-guide.elbow::after {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--tree-line);
}

/* Blank spacer (no line) */
.tree-guide.blank {
  /* intentionally empty */
}

.tree-row:hover {
  background: var(--surface-hover);
}

.tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 10px;
  flex-shrink: 0;
  user-select: none;
  transition: transform 0.15s;
}

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

.tree-toggle.leaf {
  visibility: hidden;
}

.tree-key {
  color: var(--key-color);
  cursor: pointer;
  flex-shrink: 0;
}

.tree-key:hover {
  text-decoration: underline;
}

.tree-colon {
  color: var(--text-muted);
  flex-shrink: 0;
}

.tree-value {
  cursor: pointer;
  word-break: break-all;
}

.tree-value:hover {
  text-decoration: underline;
}

.tree-value.string { color: var(--string-color); }
.tree-value.number { color: var(--number-color); }
.tree-value.boolean { color: var(--bool-color); }
.tree-value.null { color: var(--null-color); font-style: italic; }

.tree-bracket {
  color: var(--text-muted);
}

.tree-count {
  color: var(--text-muted);
  font-size: 10px;
  margin-left: 4px;
}

.tree-path-popup {
  position: fixed;
  padding: 4px 10px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 200;
  pointer-events: none;
  animation: popFade 1.5s ease forwards;
}

@keyframes popFade {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-8px); }
}

.tree-hidden {
  display: none !important;
}

/* ─── Diff Layout ─── */
.diff-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.diff-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.diff-divider {
  width: 1px;
  background: var(--border);
  flex-shrink: 0;
}

.diff-toolbar-bottom {
  border-top: 1px solid var(--border-subtle);
  border-bottom: none;
}

.diff-stats {
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.diff-results {
  flex: 1;
  overflow: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.7;
  padding: 0;
}

.diff-section {
  border-bottom: 1px solid var(--border-subtle);
}

.diff-path {
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 1;
}

.diff-line {
  padding: 2px 14px;
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-line.added {
  background: var(--diff-add);
  color: var(--diff-add-text);
}

.diff-line.removed {
  background: var(--diff-remove);
  color: var(--diff-remove-text);
}

.diff-line.changed {
  background: var(--diff-change);
  color: var(--diff-change-text);
}

.diff-line .diff-prefix {
  display: inline-block;
  width: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

/* ─── Query Layout ─── */
.query-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.query-input-row {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.query-input {
  flex: 1;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-raised);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

.query-input:focus {
  border-color: var(--accent);
}

.query-hint {
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.query-results {
  flex: 1;
  overflow: auto;
  padding: 12px;
}

.query-output {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text);
}

.query-match-count {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-family: 'JetBrains Mono', monospace;
}

/* ─── Transform Layout ─── */
.transform-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.transform-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 8px;
  padding: 12px;
  flex-shrink: 0;
}

.transform-btn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  text-align: left;
  border-radius: 8px;
  overflow: hidden;
  min-width: 0;
}

.transform-btn > div {
  min-width: 0;
  overflow: hidden;
}

.transform-btn svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--accent);
}

.transform-btn strong {
  display: block;
  font-size: 13px;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.transform-btn small {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.transform-result {
  flex: 1;
  overflow: auto;
  padding: 0;
}

.transform-output-toolbar {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.transform-output {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-all;
  padding: 12px;
  color: var(--text);
}

/* ─── Convert Layout ─── */
.convert-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.convert-actions {
  display: flex;
  gap: 8px;
  padding: 12px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.convert-btn {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 20px;
  border-radius: 8px;
  min-width: 160px;
}

.convert-btn strong {
  font-size: 14px;
  letter-spacing: 0.02em;
}

.convert-btn small {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

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

.convert-output-toolbar {
  border-top: 1px solid var(--border-subtle);
}

.convert-result {
  flex: 1;
  overflow: auto;
  padding: 0;
}

.convert-output {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-all;
  padding: 12px;
  color: var(--text);
}

/* ─── Fix Layout ─── */
.fix-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.fix-input-section {
  flex: 1 1 45%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 120px;
}

.fix-output-section {
  flex: 1 1 45%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 120px;
  border-top: 1px solid var(--border);
}

.fix-output {
  flex: 1;
  overflow: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.65;
  padding: 12px;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text);
}

.fix-log {
  padding: 0;
  flex-shrink: 0;
  max-height: 100px;
  overflow-y: auto;
  border-top: 1px solid var(--border-subtle);
}

.fix-log-item {
  padding: 3px 12px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  border-bottom: 1px solid var(--border-subtle);
}

.fix-log-item.info { color: var(--info); background: var(--info-bg); }
.fix-log-item.warn { color: var(--warning); background: var(--warning-bg); }
.fix-log-item.error { color: var(--error); background: var(--error-bg); }
.fix-log-item.success { color: var(--success); background: var(--success-bg); }

/* ─── Graph View ─── */
.graph-controls {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.03);
  z-index: 5;
  backdrop-filter: blur(8px);
}

.graph-controls-search {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
}

.graph-search-input {
  width: 160px;
  padding: 5px 8px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  outline: none;
}

.graph-search-input::placeholder {
  color: var(--text-muted);
}

.graph-search-input:focus {
  background: var(--surface-hover);
}

.graph-controls-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 4px;
  flex-shrink: 0;
}

.graph-ctrl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.graph-ctrl-btn:hover {
  background: var(--surface-hover);
  color: var(--accent);
}

.graph-ctrl-btn:active {
  background: var(--accent-bg);
}

.graph-viewport {
  flex: 1;
  overflow: hidden;
  position: relative;
  cursor: grab;
  background:
    radial-gradient(circle, var(--border-subtle) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 12px 12px;
}

.graph-viewport:active {
  cursor: grabbing;
}

.graph-transform {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  will-change: transform;
}

.graph-edges {
  position: absolute;
  top: 0;
  left: 0;
  overflow: visible;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.graph-edge-path {
  fill: none;
  stroke: var(--tree-line);
  stroke-width: 1.5;
}

.graph-edge-label {
  fill: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  text-anchor: middle;
  dominant-baseline: middle;
}

.graph-nodes {
  position: relative;
}

.graph-node {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  min-width: 120px;
  max-width: 280px;
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
  cursor: grab;
  user-select: none;
}

.graph-node:active {
  cursor: grabbing;
}

.graph-node:hover {
  border-color: var(--accent-border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.graph-node.highlight {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-border), 0 4px 16px rgba(0, 0, 0, 0.25);
}

.graph-node-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 11px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.graph-node-type {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
}

.graph-node-type.type-object {
  background: var(--accent-bg);
  color: var(--accent);
}

.graph-node-type.type-array {
  background: var(--warning-bg);
  color: var(--warning);
}

.graph-node-type.type-value {
  background: var(--info-bg);
  color: var(--info);
}

.graph-node-label {
  overflow: hidden;
  text-overflow: ellipsis;
}

.graph-node-body {
  padding: 4px 0;
}

.graph-node-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 2px 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
}

.graph-node-row:hover {
  background: var(--surface-hover);
}

.graph-node-key {
  color: var(--key-color);
  flex-shrink: 0;
}

.graph-node-val {
  overflow: hidden;
  text-overflow: ellipsis;
}

.graph-node-val.string { color: var(--string-color); }
.graph-node-val.number { color: var(--number-color); }
.graph-node-val.boolean { color: var(--bool-color); }
.graph-node-val.null { color: var(--null-color); font-style: italic; }
.graph-node-val.summary { color: var(--text-muted); font-style: italic; }

.graph-color-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border);
  vertical-align: middle;
  margin-right: 4px;
  flex-shrink: 0;
}

.graph-viewport .mode-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* ─── Drop Overlay ─── */
.drop-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 150;
}

.drop-overlay.visible {
  display: flex;
}

.drop-overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px 60px;
  border: 2px dashed var(--accent);
  border-radius: 16px;
  background: var(--surface);
  color: var(--accent);
  font-size: 16px;
  font-weight: 600;
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-overlay.visible { display: flex; }

.modal {
  background: var(--modal-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 500px;
  max-width: 90vw;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* ─── Tour ─── */
.tour-modal {
  width: 460px;
  max-width: 92vw;
  max-height: none;
  overflow: hidden;
  border-radius: 16px;
}

.tour-slides {
  position: relative;
  overflow: hidden;
}

.tour-slide {
  display: none;
  padding: 36px 28px 20px;
  text-align: center;
  animation: tourFadeIn 0.3s ease;
}

.tour-slide.active { display: block; }

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

.tour-icon {
  margin-bottom: 14px;
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 32px;
  font-weight: 700;
}

.tour-icon svg {
  width: 36px;
  height: 36px;
}

.tour-heading {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.tour-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 360px;
  margin: 0 auto 14px;
}

.tour-hint {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  margin: 0 auto;
  max-width: 380px;
}

.tour-hint code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  word-break: break-word;
}

.tour-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px 16px;
  border-top: 1px solid var(--border-subtle);
}

.tour-dots {
  display: flex;
  gap: 6px;
}

.tour-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
  transition: all 0.2s;
  cursor: pointer;
}

.tour-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

.tour-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.tour-skip {
  color: var(--text-muted) !important;
  font-size: 11px !important;
}

/* ─── Toast ─── */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface-raised);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 200;
  pointer-events: none;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ─── Light Theme Depth ─── */
[data-theme="light"] .topbar {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .mode-sidebar {
  background: var(--sidebar-bg);
  box-shadow: 1px 0 8px rgba(0, 0, 0, 0.04);
  border-right-color: #d8dae4;
}

[data-theme="light"] .section-toolbar {
  background: var(--surface);
}

[data-theme="light"] .editor-wrap .CodeMirror {
  background: var(--surface);
}

[data-theme="light"] .tree-container {
  background: var(--surface);
}

[data-theme="light"] .graph-node {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .graph-node:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12), 0 0 0 1px var(--accent-border);
}

[data-theme="light"] .graph-viewport {
  background:
    radial-gradient(circle, #c8cad4 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px;
  background-position: 12px 12px;
}

[data-theme="light"] .diff-results,
[data-theme="light"] .query-results,
[data-theme="light"] .transform-result,
[data-theme="light"] .convert-result,
[data-theme="light"] .fix-output {
  background: var(--surface);
}

[data-theme="light"] .editor-statusbar {
  background: var(--surface);
}

[data-theme="light"] .modal {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .toast {
  background: #2a2c36;
  color: #e8e8ec;
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .btn-secondary {
  background: var(--surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .privacy-badge {
  background: rgba(109, 77, 230, 0.06);
  border-color: rgba(109, 77, 230, 0.18);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .app-subtitle { display: none; }
  .privacy-badge span { display: none; }
  .mode-sidebar { width: 56px; }
  .mode-btn { width: 48px; padding: 6px 2px; }
  .mode-btn span { font-size: 8px; }
  .query-hint { display: none; }
  .transform-actions { grid-template-columns: 1fr; }
  .graph-search-input { width: 90px; }
  .graph-controls { padding: 4px 8px; border-radius: 10px; }
  .graph-node { max-width: 220px; }
}

@media (max-width: 560px) {
  .mode-sidebar {
    width: 100%;
    flex-direction: row;
    height: 48px;
    padding: 0 4px;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .mode-btn {
    width: auto;
    flex-direction: row;
    padding: 6px 10px;
    gap: 4px;
  }
  .main-layout {
    flex-direction: column;
  }
  .diff-layout {
    flex-direction: column;
  }
  .diff-divider {
    width: auto;
    height: 1px;
  }
}