/* Editor Workspace Container */
.editor-container {
  display: flex;
  width: 100%;
  height: 100%;
  background-color: var(--bg-input);
  box-shadow: var(--inset-shadow);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
}

/* Line Number Gutter */
.editor-gutter {
  background-color: transparent;
  border-right: 1px solid rgba(0,0,0,0.03);
  padding: var(--spacing-md) 0;
  text-align: right;
  user-select: none;
  min-width: 45px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  color: var(--editor-line-number);
  font-weight: 600;
  flex-shrink: 0;
}


.gutter-number {
  padding-right: var(--spacing-sm);
  height: 21px; /* matches line-height of editor content */
}

.gutter-number.active-line {
  color: var(--brand-primary);
  background-color: var(--editor-line-active);
  font-weight: bold;
}

/* Textarea / Main Input Editor */
.editor-textarea {
  flex: 1;
  height: 100%;
  border: none;
  resize: none;
  outline: none;
  padding: var(--spacing-md);
  background: transparent;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 21px; /* exactly matches gutter line height */
  white-space: pre;
  overflow: auto;
  caret-color: var(--brand-primary);
}

.editor-textarea::selection {
  background-color: var(--editor-selection);
}

/* Highlighting Render Pane (For outputs / formatted viewing) */
.editor-readonly {
  flex: 1;
  height: 100%;
  padding: var(--spacing-md);
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 21px;
  white-space: pre;
  overflow: auto;
  color: var(--text-main);
  background-color: var(--bg-input);
  box-shadow: var(--inset-shadow);
  border-radius: var(--radius-lg);
}

/* JSON Syntax Highlight Spans */
.json-key {
  color: var(--syn-key);
  font-weight: 600;
}

.json-string {
  color: var(--syn-string);
}

.json-number {
  color: var(--syn-number);
}

.json-boolean {
  color: var(--syn-boolean);
  font-weight: bold;
}

.json-null {
  color: var(--syn-null);
  font-style: italic;
}

/* Validation Error Highlight overlay */
.editor-error-banner {
  position: absolute;
  bottom: var(--spacing-sm);
  left: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: var(--brand-danger);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8rem;
  font-family: var(--font-sans);
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  transform: translateY(150%);
  transition: transform var(--transition-normal);
}

.editor-error-banner.show {
  transform: translateY(0);
}

.error-close-btn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-weight: bold;
  font-size: 1.1rem;
}

/* Side-by-side Diff View layout */
.diff-container {
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
  gap: var(--spacing-md);
}

.diff-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--bg-input);
  box-shadow: var(--inset-shadow);
  border-radius: var(--radius-lg);
}

.diff-output-body {
  flex: 1;
  overflow: auto;
  display: flex;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 21px;
}

/* Diff lines */
.diff-line {
  display: flex;
  width: 100%;
  padding-left: var(--spacing-sm);
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-line-number {
  width: 35px;
  text-align: right;
  padding-right: var(--spacing-sm);
  color: var(--editor-line-number);
  border-right: 1px solid rgba(0,0,0,0.03);
  user-select: none;
  margin-right: var(--spacing-sm);
  background-color: transparent;
}


.diff-line-content {
  flex: 1;
  padding-left: var(--spacing-xs);
}

.diff-line.added {
  background-color: var(--diff-add-bg);
  border-left: 3px solid var(--diff-add-border);
}

.diff-line.removed {
  background-color: var(--diff-remove-bg);
  border-left: 3px solid var(--diff-remove-border);
}

.diff-line.modified {
  background-color: var(--diff-mod-bg);
  border-left: 3px solid var(--diff-mod-border);
}

.diff-empty-line {
  background-color: transparent;
  opacity: 0.3;
}