:root {
  --color-paper: #f4f1e8;
  --color-paper-deep: #ece7d9;
  --color-ink: #1c1b18;
  --color-ink-soft: #6b665b;
  --color-line: #d9d3c3;
  --color-accent: #d8442a;
  --color-accent-deep: #b0331d;
  --color-mark: #e0a92e;
  --font-display: Inter, Noto Sans TC, sans-serif;
  --font-body: Inter, Noto Sans TC, sans-serif;
  --font-mono: Inter, Noto Sans TC, sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

.tool-intro {
  max-width: 64ch;
  margin-block: 24px 40px;
  color: #6b665b;
}

.json-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

.editor-pane {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.editor-toolbar-info {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.editor-toolbar-label {
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: #6b665b;
  font-variant-numeric: tabular-nums;
}

.editor-toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.editor-host {
  width: 100%;
  background: #f4f1e8;
  border: 1.5px solid #1c1b18;
  border-radius: 2px;
  box-shadow: 6px 6px 0 rgba(28, 27, 24, 0.12);
  overflow: hidden;
  transition: border-color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.editor-host:focus-within {
  border-color: #d8442a;
}

.editor-host .cm-editor {
  max-height: 75vh;
}
.editor-host .cm-editor.cm-focused {
  outline: none;
}
.editor-host .cm-scroller {
  min-height: 460px;
  overflow: auto;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: #1c1b18;
}
.editor-host .cm-content {
  padding: 16px 0;
}
.editor-host .cm-line {
  padding-inline: 16px;
}
.editor-host .cm-placeholder {
  color: #6b665b;
}
.editor-host .cm-cursor {
  border-left-color: #1c1b18;
}
.editor-host .cm-selectionBackground, .editor-host.cm-focused .cm-selectionBackground,
.editor-host .cm-content ::selection {
  background: rgba(224, 169, 46, 0.35);
}
.editor-host .cm-gutters {
  background: #ece7d9;
  color: #6b665b;
  border-right: 1px solid #d9d3c3;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1rem;
}
.editor-host .cm-activeLine {
  background: rgba(28, 27, 24, 0.04);
}
.editor-host .cm-activeLineGutter {
  background: rgba(28, 27, 24, 0.06);
}
.editor-host .cm-foldGutter .cm-gutterElement {
  padding-inline: 4px;
  cursor: pointer;
  transition: color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.editor-host .cm-foldGutter .cm-gutterElement:hover {
  color: #d8442a;
}
.editor-host .cm-foldPlaceholder {
  margin-inline: 4px;
  padding: 0 8px;
  font-size: inherit;
  color: #6b665b;
  background: transparent;
  border: 1px dashed #d9d3c3;
  border-radius: 2px;
  cursor: pointer;
  transition: color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), border-color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.editor-host .cm-foldPlaceholder:hover {
  color: #d8442a;
  border-color: #d8442a;
}
.editor-host .cm-matchingBracket {
  background: rgba(224, 169, 46, 0.25);
  outline: 1px solid rgba(28, 27, 24, 0.2);
}

.copy-hint {
  min-height: 1.4em;
  margin: 0;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1rem;
  color: #d8442a;
}

.json-pane {
  position: sticky;
  top: 24px;
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: #ece7d9;
  border: 1px solid #d9d3c3;
  border-radius: 2px;
}
.json-pane .section-rule {
  margin-top: 24px;
}
.json-pane .section-rule:first-of-type {
  margin-top: 0;
}

.json-status {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.status-badge {
  display: inline-flex;
  align-self: flex-start;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.04em;
  padding: 4px 16px;
  border-radius: 2px;
  border: 1.5px solid #d9d3c3;
  color: #6b665b;
}

.json-status[data-state=valid] .status-badge {
  color: #f4f1e8;
  background: #1c1b18;
  border-color: #1c1b18;
}

.json-status[data-state=invalid] .status-badge {
  color: #d8442a;
  background: transparent;
  border-color: #d8442a;
}

.status-msg {
  margin: 0;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #6b665b;
}

.json-status[data-state=invalid] .status-msg {
  color: #d8442a;
}

.status-msg.is-clickable {
  cursor: pointer;
  text-decoration: underline dotted;
}
.status-msg.is-clickable:hover {
  color: #b0331d;
}

.indent-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.indent-chip {
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.04em;
  padding: 4px 16px;
  border: 1px solid #d9d3c3;
  border-radius: 2px;
  color: #6b665b;
  background: transparent;
  cursor: pointer;
  transition: color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), border-color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), background-color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.indent-chip:hover {
  color: #1c1b18;
  border-color: #1c1b18;
}
.indent-chip.is-active {
  color: #f4f1e8;
  background: #d8442a;
  border-color: #d8442a;
}

.action-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.action-grid .btn {
  justify-content: center;
}
.action-grid .btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.stat-cell {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 16px;
  background: #f4f1e8;
  border: 1px solid #d9d3c3;
  border-radius: 2px;
}

.stat-cell-value {
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 1.25rem;
  font-variant-numeric: tabular-nums;
  color: #1c1b18;
}

.stat-cell-label {
  font-size: 1rem;
  color: #6b665b;
}

@media (max-width: 860px) {
  .json-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }
  .json-pane {
    position: static;
  }
  .editor-host .cm-scroller {
    min-height: 320px;
  }
}