/* ── CSS Variables ─────────────────────────────────────────────────────── */
:root {
  --bg: #ffffff;
  --surface: #f5f5f5;
  --surface2: #ebebeb;
  --border: #d0d0d0;
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --accent: #0066ff;
  --accent-hover: #0051cc;
  --danger: #d32f2f;
  --success: #2e7d32;

  /* syntax tokens */
  --tok-str: #22863a;
  --tok-key: #032f62;
  --tok-num: #005cc5;
  --tok-bool: #e36209;
  --tok-null: #9b59b6;

  /* diff */
  --diff-add-bg: #e6ffed;
  --diff-add-text: #22863a;
  --diff-del-bg: #ffeef0;
  --diff-del-text: #b31d28;
  --diff-eq-bg: transparent;

  --radius: 6px;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not(.theme-light) {
    --bg: #1e1e1e;
    --surface: #252526;
    --surface2: #2d2d30;
    --border: #3e3e42;
    --text: #d4d4d4;
    --text-muted: #858585;
    --accent: #4fc3f7;
    --accent-hover: #81d4fa;
    --danger: #f48771;
    --success: #89d185;

    --tok-str: #ce9178;
    --tok-key: #9cdcfe;
    --tok-num: #b5cea8;
    --tok-bool: #569cd6;
    --tok-null: #c586c0;

    --diff-add-bg: #1a3a1e;
    --diff-add-text: #89d185;
    --diff-del-bg: #3a1a1a;
    --diff-del-text: #f48771;
    --diff-eq-bg: transparent;
  }
}

/* Manual dark override — matches media-query values exactly */
:root.theme-dark {
  --bg: #1e1e1e;
  --surface: #252526;
  --surface2: #2d2d30;
  --border: #3e3e42;
  --text: #d4d4d4;
  --text-muted: #858585;
  --accent: #4fc3f7;
  --accent-hover: #81d4fa;
  --danger: #f48771;
  --success: #89d185;

  --tok-str: #ce9178;
  --tok-key: #9cdcfe;
  --tok-num: #b5cea8;
  --tok-bool: #569cd6;
  --tok-null: #c586c0;

  --diff-add-bg: #1a3a1e;
  --diff-add-text: #89d185;
  --diff-del-bg: #3a1a1a;
  --diff-del-text: #f48771;
  --diff-eq-bg: transparent;
}

/* Manual light override — restores default light values */
:root.theme-light {
  --bg: #ffffff;
  --surface: #f5f5f5;
  --surface2: #ebebeb;
  --border: #d0d0d0;
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --accent: #0066ff;
  --accent-hover: #0051cc;
  --danger: #d32f2f;
  --success: #2e7d32;

  --tok-str: #22863a;
  --tok-key: #032f62;
  --tok-num: #005cc5;
  --tok-bool: #e36209;
  --tok-null: #9b59b6;

  --diff-add-bg: #e6ffed;
  --diff-add-text: #22863a;
  --diff-del-bg: #ffeef0;
  --diff-del-text: #b31d28;
  --diff-eq-bg: transparent;
}

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

html,
body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

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

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

header h1 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--text);
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: -0.5px;
  padding: 2px 6px;
  border-radius: 5px;
  flex-shrink: 0;
}

.logo-badge--sm {
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 4px;
}

.logo-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.2px;
}

.logo-name strong {
  font-weight: 700;
  color: var(--text);
}

.header-sep {
  flex: 1;
}

.about-btn,
.theme-btn,
.github-btn {
  width: 26px;
  height: 26px;
  padding: 0;
  border-radius: 50%;
  flex-shrink: 0;
  display: inline-flex;
  justify-content: center;
  align-items: center;
}

.github-btn {
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.github-btn:hover {
  background: var(--border);
}

.about-btn {
  font-size: 13px;
  font-weight: 700;
}

.theme-btn svg {
  display: block;
}

/* ── About modal ────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: backdrop-in 0.15s ease;
}

.modal-backdrop.hidden {
  display: none;
}

@keyframes backdrop-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: min(640px, 92vw);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
  animation: modal-in 0.18s ease;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(6px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

.modal-header {
  display: flex;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 10px;
}

.modal-header h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text);
  flex: 1;
}

.modal-close {
  width: 26px;
  height: 26px;
  padding: 0;
  border-radius: 50%;
  font-size: 17px;
  line-height: 1;
  flex-shrink: 0;
  justify-content: center;
}

.modal-body {
  padding: 18px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-tagline {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.modal-tagline code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--surface2);
  padding: 1px 5px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

.modal-tools {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-tool {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}

.modal-tool-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  margin-bottom: 8px;
}

.modal-tool ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.modal-tool li {
  font-size: 12.5px;
  color: var(--text);
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}

.modal-tool li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

.modal-why {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal-why-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.modal-why-icon {
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}

.modal-why-item div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.modal-why-item strong {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text);
}

.modal-why-item span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.modal-why-item code {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--surface2);
  padding: 1px 4px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

.modal-meta {
  font-size: 11.5px;
  color: var(--text-muted);
  padding-top: 4px;
  border-top: 1px solid var(--border);
}

.modal-meta code {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--surface2);
  padding: 1px 4px;
  border-radius: 3px;
}

/* ── Tabs ───────────────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 2px;
  padding: 8px 20px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tab-btn {
  padding: 7px 18px;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: color 0.15s, background 0.15s;
}

.tab-btn:hover {
  color: var(--text);
  background: var(--surface2);
}

.tab-btn.active {
  background: var(--bg);
  color: var(--accent);
  border-color: var(--border);
  border-bottom-color: var(--bg);
  margin-bottom: -1px;
  z-index: 1;
}

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

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

/* ── Toolbar ────────────────────────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.toolbar-sep {
  flex: 1;
}

.toolbar-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* Diff toolbar: Clear stays right, Find Differences is absolutely centered */
.toolbar-diff {
  position: relative;
  justify-content: flex-end;
}

.toolbar-diff #btn-diff {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface2);
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

button:hover {
  background: var(--border);
}

button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

button.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

button.copied {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}

button.danger {
  color: var(--danger);
}

button.danger:hover {
  background: var(--diff-del-bg);
  border-color: var(--danger);
}

/* Sample data button — outlined accent, visually distinct from action buttons */
button.sample-btn {
  background: transparent;
  border: 1px dashed var(--accent);
  color: var(--accent);
}

button.sample-btn:hover {
  background: rgba(0, 102, 255, 0.07);
  border-style: solid;
}

/* Dismiss × that appears beside sample button when sample is loaded */
button.sample-dismiss-btn {
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 50%;
  font-size: 13px;
  line-height: 1;
  justify-content: center;
  background: var(--surface2);
  color: var(--text-muted);
  margin-left: -4px;
}

button.sample-dismiss-btn:hover {
  background: var(--diff-del-bg);
  color: var(--danger);
  border-color: var(--danger);
}

/* ── Select ─────────────────────────────────────────────────────────────── */
select {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface2);
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
}

/* ── Depth slider ───────────────────────────────────────────────────────── */
input[type="range"]#depth-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 120px;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  cursor: pointer;
  border: none;
  padding: 0;
  transition: opacity 0.15s;
}

input[type="range"]#depth-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 1px var(--accent);
}

input[type="range"]#depth-slider::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 1px var(--accent);
}

input[type="range"]#depth-slider:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.depth-display {
  font-size: 12px;
  font-family: var(--mono);
  color: var(--text-muted);
  min-width: 26px;
  text-align: center;
}

/* ── Error banner ───────────────────────────────────────────────────────── */
.error-banner {
  display: none;
  background: var(--diff-del-bg);
  color: var(--danger);
  border-bottom: 1px solid var(--danger);
  padding: 6px 20px;
  font-size: 12px;
  font-family: var(--mono);
  flex-shrink: 0;
}

/* ── Split pane ─────────────────────────────────────────────────────────── */
.split {
  display: flex;
  flex-direction: row;
  flex: 1;
  overflow: hidden;
}

.pane {
  flex: 1 1 0;
  min-width: 80px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Resizer handles ────────────────────────────────────────────────────── */
.resizer {
  flex-shrink: 0;
  background: var(--border);
  position: relative;
  z-index: 10;
  transition: background 0.15s;
}

.resizer:hover,
.resizer.dragging {
  background: var(--accent);
}

.resizer-v {
  width: 5px;
  cursor: col-resize;
}

.resizer-h {
  height: 5px;
  width: 100%;
  cursor: row-resize;
}

/* Three-dot grip — always visible, high contrast against the divider */
.resizer-v::after,
.resizer-h::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 3px;
  height: 3px;
  border-radius: 50%;
  /* currentColor lets hover state flip the dot color automatically */
  color: var(--text-muted);
  background: currentColor;
  opacity: 0.75;
  transition: opacity 0.15s, color 0.15s;
}

/* vertical resizer: dots stacked in a column */
.resizer-v::after {
  box-shadow: 0 -7px 0 currentColor, 0 7px 0 currentColor;
}

/* horizontal resizer: dots in a row */
.resizer-h::after {
  box-shadow: -7px 0 0 currentColor, 7px 0 0 currentColor;
}

/* on hover/drag: flip dots to bg color so they pop against the accent bar */
.resizer:hover::after,
.resizer.dragging::after {
  color: #fff;
  opacity: 1;
}

.pane-label {
  display: flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Textareas ──────────────────────────────────────────────────────────── */
textarea {
  flex: 1;
  padding: 12px 14px;
  border: none;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  resize: none;
  outline: none;
  width: 100%;
}

textarea.input-error {
  background: var(--diff-del-bg);
  background: color-mix(in srgb, var(--diff-del-bg) 40%, var(--bg));
}

#fmt-highlight.hl-error {
  background: var(--diff-del-bg);
  background: color-mix(in srgb, var(--diff-del-bg) 30%, var(--bg));
}

/* ── Formatter output panes ─────────────────────────────────────────────── */
.output-pane {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
  position: relative;
  /* anchor for copy pill */
}

.output-tabs {
  display: flex;
  gap: 0;
  height: 28px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  align-items: stretch;
}

.output-tab-btn {
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--text-muted);
  padding: 0 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.output-tab-btn.active {
  color: var(--accent);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.output-tab-btn:hover {
  background: var(--surface2);
}

/* ── Highlight wrap (pre + minimap side-by-side) ───────────────────────── */
.highlight-wrap {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

.highlight-wrap.hidden {
  display: none;
}

/* ── Breadcrumb bar ─────────────────────────────────────────────────────── */
.fmt-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  overflow: hidden;
  gap: 0;
  padding: 3px 14px;
  padding-right: 115px;
  /* clear of 100px minimap + 1px border + breathing room */
  font-size: 11px;
  font-family: var(--mono);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  white-space: nowrap;
  color: var(--text-muted);
  min-height: 22px;
}

.fmt-breadcrumb.hidden {
  visibility: hidden;
}

.bc-part {
  color: var(--text-muted);
  padding: 0 2px;
  border-radius: 3px;
  transition: color 0.1s;
}

.bc-part.bc-active {
  color: var(--text);
  font-weight: 600;
}

.bc-sep {
  color: var(--text-muted);
  opacity: 0.45;
  padding: 0 1px;
  user-select: none;
}

.bc-root {
  color: var(--text-muted);
  opacity: 0.6;
}

/* ── Code editor area ───────────────────────────────────────────────────── */
#fmt-highlight {
  flex: 1;
  overflow-x: auto;
  overflow-y: scroll;
  padding: 6px 0;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  background: var(--bg);
  /* hide vertical scrollbar — minimap replaces it; show thin horizontal bar */
  scrollbar-width: none;
  cursor: text;
  outline: none;
}

#fmt-highlight::-webkit-scrollbar {
  width: 0;
  height: 6px;
}

#fmt-highlight::-webkit-scrollbar-track {
  background: var(--surface);
}

#fmt-highlight::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* ── Code lines ─────────────────────────────────────────────────────────── */
.code-line {
  display: flex;
  align-items: stretch;
  min-height: 1.6em;
}

.code-line:hover {
  background: rgba(128, 128, 128, 0.07);
  background: color-mix(in srgb, var(--text-muted) 5%, transparent);
}

.code-line.bracket-match-active {
  background: rgba(0, 102, 255, 0.1);
  background: color-mix(in srgb, var(--accent) 13%, transparent);
}

.ln {
  flex-shrink: 0;
  width: 44px;
  text-align: right;
  padding-right: 12px;
  color: var(--text-muted);
  opacity: 0.38;
  user-select: none;
  font-size: 11px;
  line-height: 1.6;
  pointer-events: none;
}

.code-body {
  flex: 1;
  position: relative;
  white-space: pre;
  line-height: 1.6;
  padding-right: 24px;
  /* breathing room before minimap */
}

/* Indent guides */
.ig {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border);
  left: calc(var(--ig) * 2ch);
  pointer-events: none;
  opacity: 0.45;
}

/* ── Minimap canvas ─────────────────────────────────────────────────────── */
.minimap-canvas {
  width: 100px;
  flex-shrink: 0;
  border-left: 1px solid var(--border);
  cursor: ns-resize;
  background: var(--bg);
  display: block;
  /* smooth cursor on hover */
  transition: opacity 0.15s;
}

.minimap-canvas:hover {
  opacity: 0.88;
}

#fmt-tree {
  flex: 1;
  overflow: auto;
  padding: 10px 8px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  background: var(--bg);
}

#fmt-tree.hidden {
  display: none;
}

/* ── Tree styles ────────────────────────────────────────────────────────── */
.tree-root,
.tree-root ul {
  list-style: none;
  padding-left: 0;
}

.tree-root ul {
  padding-left: 18px;
  border-left: 1px solid var(--border);
  margin-left: 6px;
}

.tree-root li {
  padding: 1px 0;
}

details>summary {
  cursor: pointer;
  list-style: none;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 4px;
}

details>summary::before {
  content: '▶';
  font-size: 9px;
  color: var(--text-muted);
  display: inline-block;
  width: 12px;
  transition: transform 0.15s;
  flex-shrink: 0;
}

details[open]>summary::before {
  transform: rotate(90deg);
}

.tree-key {
  color: var(--tok-key);
}

.tree-colon {
  color: var(--text-muted);
  margin: 0 2px;
}

.tree-preview {
  color: var(--text-muted);
  font-size: 11px;
  margin-left: 4px;
}

/* ── Syntax tokens ──────────────────────────────────────────────────────── */
.tok-str {
  color: var(--tok-str);
}

.tok-key {
  color: var(--tok-key);
}

.tok-num {
  color: var(--tok-num);
}

.tok-bool {
  color: var(--tok-bool);
}

.tok-null {
  color: var(--tok-null);
}

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

#diff-output {
  flex: 1;
  overflow: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.5;
  background: var(--bg);
  scrollbar-width: none;
}

#diff-output::-webkit-scrollbar {
  display: none;
}

.diff-line {
  display: flex;
  align-items: flex-start;
  padding: 0 12px 0 4px;
}

.diff-line:hover {
  filter: brightness(0.95);
}

.diff-add {
  background: var(--diff-add-bg);
}

.diff-del {
  background: var(--diff-del-bg);
}

.diff-eq {
  background: var(--diff-eq-bg);
}

.diff-ln {
  color: var(--text-muted);
  min-width: 38px;
  user-select: none;
  font-size: 11px;
  padding-top: 1px;
  flex-shrink: 0;
}

.diff-prefix {
  min-width: 16px;
  font-weight: 700;
  flex-shrink: 0;
  padding-top: 0;
}

.diff-add .diff-prefix {
  color: var(--diff-add-text);
}

.diff-del .diff-prefix {
  color: var(--diff-del-text);
}

.diff-eq .diff-prefix {
  color: var(--text-muted);
}

.diff-text {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-all;
}

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

.diff-del .diff-text {
  color: var(--diff-del-text);
}

.diff-identical {
  padding: 20px;
  color: var(--success);
  font-family: var(--mono);
  font-size: 13px;
}

/* ── Diff inputs ─────────────────────────────────────────────────────────── */
.diff-inputs {
  display: flex;
  flex-direction: row;
  flex: 0 0 40%;
  min-height: 120px;
  overflow: hidden;
}

.diff-result {
  display: flex;
  flex-direction: column;
  flex: 1 1 0;
  min-height: 80px;
  overflow: hidden;
}

.diff-result-label {
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Escape output pane (anchor for copy pill) ──────────────────────────── */
#esc-pane-output {
  position: relative;
}

/* ── Gutter (line number + fold triangle — whole area is clickable) ──────── */
.gutter {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  user-select: none;
  overflow: hidden;
}

.gutter.has-fold {
  cursor: pointer;
}

.gutter.has-fold:hover .ln {
  opacity: 0.65;
}

.gutter.has-fold:hover .fold-btn {
  opacity: 1;
  color: var(--accent);
}

/* ── Fold buttons ───────────────────────────────────────────────────────── */
.fold-btn,
.fold-placeholder {
  flex-shrink: 0;
  width: 18px;
  text-align: center;
  font-size: 22px;
  line-height: 1;
  color: var(--text-muted);
  opacity: 0.45;
  transition: opacity 0.1s, color 0.1s;
}

.fold-placeholder {
  pointer-events: none;
}

/* Bright line number on folded lines */
.code-line.folded .ln {
  opacity: 0.9;
  color: var(--accent);
}

.fold-ellipsis {
  display: none;
  color: var(--text-muted);
  font-size: 11px;
  user-select: none;
}

.code-line.folded .fold-ellipsis {
  display: inline;
}

/* Fold btn in diff output */
.diff-fold-btn {
  color: var(--text-muted);
}

/* Breadcrumb parts are clickable */
.bc-part[data-target-path] {
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.1s, color 0.1s;
}

.bc-part[data-target-path]:hover {
  color: var(--accent);
  background: rgba(0, 102, 255, 0.08);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

/* ── Copy pill ──────────────────────────────────────────────────────────── */
.copy-pill {
  position: absolute;
  bottom: 22px;
  right: 120px;
  /* clear of minimap */
  display: flex;
  align-items: center;
  background: var(--accent);
  border-radius: 40px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  z-index: 20;
  animation: pill-in 0.18s ease;
  border: none;
}

.copy-pill.hidden {
  display: none;
}

#esc-copy-pill {
  right: 16px;
}

/* no minimap on escape pane */

@keyframes pill-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.copy-pill-copy,
.copy-pill-dismiss {
  background: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 24px;
  font-weight: 600;
  padding: 12px 24px;
  white-space: nowrap;
  transition: background 0.12s;
}

.copy-pill-dismiss {
  padding: 12px 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 28px;
  line-height: 1;
}

.copy-pill-copy:hover {
  background: rgba(255, 255, 255, 0.18);
}

.copy-pill-dismiss:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* ── Escape panel ───────────────────────────────────────────────────────── */

/* ── Scrollbars ─────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ── Site footer ────────────────────────────────────────────────────────── */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 20px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 11.5px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.footer-dot {
  opacity: 0.35;
  user-select: none;
}

/* ── Focus ring (keyboard nav) ──────────────────────────────────────────── */
button:focus-visible,
[role="tab"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 700px) {

  .split,
  .diff-inputs {
    flex-direction: column;
  }

  .resizer {
    display: none;
  }

  /* panes stack naturally; resizer handles not needed */
  .diff-inputs {
    flex: 0 0 auto;
  }

  /* Diff toolbar: drop absolute centering, stack buttons naturally */
  .toolbar-diff {
    justify-content: center;
  }

  .toolbar-diff #btn-diff {
    position: static;
    transform: none;
  }

  /* Copy pill: minimap is hidden, so right:120px would clip off-screen */
  .copy-pill {
    right: 16px;
  }
}

/* ── Extra-small screens (phones ≤ 480px) ───────────────────────────────── */
@media (max-width: 480px) {
  .toolbar {
    padding: 8px 12px;
    gap: 6px;
  }

  .modal-header {
    padding: 10px 12px;
  }

  .modal-body {
    padding: 12px;
  }

  .copy-pill-copy {
    font-size: 18px;
    padding: 8px 14px;
  }

  .copy-pill-dismiss {
    font-size: 22px;
    padding: 8px 12px;
  }
}
.site-footer[role="button"] {
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.site-footer[role="button"]:hover {
  background: var(--surface2);
}

.site-footer[role="button"]:hover .footer-link {
  color: var(--text);
  text-decoration: underline;
}