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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  overflow: hidden;
  height: 100vh;
}

.hidden {
  display: none !important;
}

.container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Tab Bar */
.tab-bar {
  display: flex;
  align-items: center;
  background: var(--bg-tertiary, #f0f0f0);
  border-bottom: 1px solid var(--border-color, #ddd);
  padding: 0 8px;
  min-height: 36px;
}

.tab {
  display: flex;
  align-items: center;
  padding: 6px 12px;
  background: var(--gray-200, #e8e8e8);
  border: 1px solid var(--border-color-strong, #ccc);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  margin-right: 2px;
  cursor: pointer;
  user-select: none;
  max-width: 200px;
  min-width: 120px;
}

.tab.active {
  background: var(--bg-primary, #fff);
  border-color: var(--gray-500, #999);
  z-index: 1;
}

.tab-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}

.tab-close {
  background: none;
  border: none;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  padding: 0;
  margin-left: 8px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: #666;
  transition:
    background 0.15s,
    color 0.15s;
}

.tab-close:hover {
  background: #ddd;
  color: #000;
}

.tab-close:focus-visible {
  outline: 2px solid #5661b3;
  outline-offset: 2px;
}

.new-tab-button {
  background: none;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 14px;
  margin-left: 8px;
  color: #666;
}

.new-tab-button:hover {
  background: #e8e8e8;
}

.new-tab-button:focus-visible {
  outline: 2px solid #5661b3;
  outline-offset: 2px;
}

/* PDF Tab Styles */
.tab.pdf-tab {
  background: #e3f2fd;
  border-color: #90caf9;
}

.tab.pdf-tab.active {
  background: #fff;
  border-color: #1976d2;
}

.tab.pdf-tab .tab-title {
  color: #1565c0;
}

/* PDF Tab Container */
.pdf-tab-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--bg-primary, #fff);
}

.pdf-tab-container .pdf-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: #f5f5f5;
  border-bottom: 1px solid #ddd;
}

.pdf-tab-container .pdf-nav-btn,
.pdf-tab-container .pdf-zoom-btn,
.pdf-tab-container .pdf-rotate-btn {
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 14px;
  min-width: 28px;
  text-align: center;
}

.pdf-tab-container .pdf-nav-btn:hover,
.pdf-tab-container .pdf-zoom-btn:hover,
.pdf-tab-container .pdf-rotate-btn:hover {
  background: #e0e0e0;
}

.pdf-tab-container .pdf-page-input {
  width: 50px;
  text-align: center;
  padding: 4px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.pdf-tab-container .pdf-page-info {
  color: #666;
  font-size: 13px;
}

.pdf-tab-container .pdf-zoom-level {
  min-width: 50px;
  text-align: center;
  font-size: 13px;
  color: #666;
}

.pdf-tab-container .pdf-canvas-container {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  padding: 20px;
  background: #525659;
}

.pdf-tab-container .pdf-canvas-container canvas {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* Dark theme PDF tab */
body.dark .tab.pdf-tab {
  background: #1a237e;
  border-color: #3949ab;
}

body.dark .tab.pdf-tab .tab-title {
  color: #90caf9;
}

body.dark .pdf-tab-container .pdf-controls {
  background: #2d2d2d;
  border-color: #444;
}

/* Tab Content */
.tab-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.tab-content:not(.active) {
  display: none;
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background: #f5f5f5;
  border-bottom: 1px solid #ddd;
  gap: 4px;
}

.toolbar button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.toolbar button:hover {
  background: #e0e0e0;
  border-color: #ccc;
}

.toolbar button:active {
  background: #d0d0d0;
}

.toolbar button:focus-visible {
  outline: 2px solid #5661b3;
  outline-offset: 2px;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 2px;
}
.toolbar-separator {
  width: 1px;
  height: 20px;
  background: var(--border-color, rgba(0, 0, 0, 0.12));
  margin: 0 6px;
  align-self: center;
  flex-shrink: 0;
}

/* Editor Container */
.editor-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.pane {
  flex: 1;
  overflow: auto;
  min-width: 0;
}

.pane:first-child {
  border-right: none;
}

/* Pane Resizer */
.pane-resizer {
  width: 6px;
  background: var(--gray-200, #e0e0e0);
  cursor: col-resize;
  position: relative;
  flex-shrink: 0;
  transition: background 0.2s;
}

.pane-resizer:hover {
  background: var(--gray-500, #999);
}

.pane-resizer:active {
  background: var(--gray-600, #666);
}

.editor-textarea {
  width: 100%;
  height: 100%;
  padding: 20px;
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 15px;
  line-height: 1.6;
  border: none;
  outline: none;
  resize: none;
}

/* CodeMirror container */
.codemirror-container {
  height: 100%;
  overflow: auto;
}
.codemirror-container .cm-editor {
  height: 100%;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 14px;
}
.codemirror-container .cm-scroller {
  overflow: auto;
}

.pane:last-child {
  padding: 0;
  background: #fff;
}

.preview-content {
  max-width: none;
  margin: 0;
  padding: 20px 24px 24px 24px;
  line-height: 1.6;
  font-size: 14px;
}

/* Legacy support for old selectors */
#editor-pane {
  border-right: 1px solid #ddd;
}

#editor {
  width: 100%;
  height: 100%;
  padding: 20px;
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 15px;
  line-height: 1.6;
  border: none;
  outline: none;
  resize: none;
}

#preview-pane {
  padding: 20px;
  background: #fff;
}

/* GitHub Light Theme for Preview (Default) */
#preview,
[id^='preview-'],
.preview-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 15px;
  padding: 20px;
  background: #ffffff;
  color: #24292f;
  line-height: 1.6;
}

/* ============================================
   Error & Loading State Components
   ============================================ */

/* Preview Error State */
.preview-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: #dc3545;
  text-align: center;
  min-height: 200px;
}

.preview-error-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.8;
}

.preview-error-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.preview-error-message {
  font-size: 14px;
  color: #666;
  max-width: 400px;
  line-height: 1.5;
}

/* Loading State */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-200, #e5e7eb);
  border-top-color: var(--primary-dark, #5661b3);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  z-index: 100;
}

.loading-text {
  font-size: 14px;
  color: var(--gray-600, #4b5563);
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--gray-100, #f3f4f6) 25%,
    var(--gray-200, #e5e7eb) 50%,
    var(--gray-100, #f3f4f6) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
}

.skeleton-text:last-child {
  width: 60%;
}

/* Success State */
.success-message {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #d1fae5;
  color: #065f46;
  border-radius: 6px;
  font-size: 14px;
}

.success-message svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Warning State */
.warning-message {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #fef3c7;
  color: #92400e;
  border-radius: 6px;
  font-size: 14px;
}

.warning-message svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Info State */
.info-message {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #dbeafe;
  color: #1e40af;
  border-radius: 6px;
  font-size: 14px;
}

.info-message svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.app-toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: var(--z-toast, 500);
  pointer-events: none;
}

.app-toast {
  min-width: 260px;
  max-width: 420px;
  padding: 12px 14px;
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
  color: #111827;
  background: #ffffff;
  border-left: 4px solid #3b82f6;
  opacity: 0;
  transform: translateY(-8px);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
  pointer-events: auto;
  cursor: pointer;
  font-size: 13px;
  line-height: 1.4;
}

.app-toast.visible {
  opacity: 1;
  transform: translateY(0);
}

.app-toast-info {
  border-left-color: #2563eb;
}

.app-toast-success {
  border-left-color: #059669;
  background: #ecfdf5;
}

.app-toast-warning {
  border-left-color: #d97706;
  background: #fffbeb;
}

/* Dark theme adjustments for states */
body[class*='dark'] .preview-error-message {
  color: #9ca3af;
}

body[class*='dark'] .loading-overlay {
  background: rgba(0, 0, 0, 0.8);
}

body[class*='dark'] .loading-text {
  color: #9ca3af;
}

/* Bottom Panel (REPL Output) */
.bottom-panel {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--gray-200, #e5e7eb);
  flex-shrink: 0;
}
.bottom-panel.collapsed {
  height: 0;
  overflow: hidden;
  border: none;
}
.bottom-panel:not(.collapsed) {
  height: 200px;
}
.bottom-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 12px;
  background: var(--gray-50, #f9fafb);
  border-bottom: 1px solid var(--gray-200);
}
.bottom-panel-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
}
.bottom-panel-actions {
  display: flex;
  gap: 4px;
}
.bottom-panel-btn {
  font-size: 12px;
  padding: 4px 8px;
  border: 1px solid var(--gray-300);
  border-radius: 4px;
  background: white;
  cursor: pointer;
}
.bottom-panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: #1e1e1e;
  color: #d4d4d4;
}
.repl-entry {
  margin-bottom: 8px;
}
.repl-command {
  color: #569cd6;
  margin-bottom: 2px;
}
.repl-stdout {
  color: #d4d4d4;
  white-space: pre-wrap;
}
.repl-stderr {
  color: #f44747;
  white-space: pre-wrap;
}
.repl-error {
  color: #f44747;
}

/* Code Run Button */
.code-run-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  padding: 4px 10px;
  font-size: 12px;
  background: var(--primary-dark, #5661b3);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
}
pre:hover .code-run-btn {
  opacity: 1;
}

/* Dark theme bottom panel */
body[class*='dark'] .bottom-panel-header {
  background: #1e1e1e;
  border-color: #333;
}
body[class*='dark'] .bottom-panel-btn {
  background: #2d2d2d;
  border-color: #444;
  color: #ccc;
}
body[class*='dark'] .bottom-panel-title {
  color: #ccc;
}

/* Status Bar */
.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 12px;
  background: var(--bg-tertiary, #f5f5f5);
  border-top: 1px solid var(--border-color, #ddd);
  font-size: 12px;
  color: var(--text-secondary, #666);
  min-height: 24px;
  flex-shrink: 0;
}
.status-bar-left,
.status-bar-right {
  display: flex;
  align-items: center;
  gap: 4px;
}
.status-separator {
  color: var(--gray-300, #d1d5db);
  margin: 0 2px;
}
.status-item {
  white-space: nowrap;
}

/* Preview Styles */
#preview h1,
#preview h2,
#preview h3,
#preview h4,
#preview h5,
#preview h6,
.preview-content h1,
.preview-content h2,
.preview-content h3,
.preview-content h4,
.preview-content h5,
.preview-content h6 {
  margin-top: 24px;
  margin-bottom: 16px;
  font-weight: 600;
  line-height: 1.25;
}

#preview h1,
.preview-content h1 {
  font-size: 2em;
  border-bottom: 1px solid #eaecef;
  padding-bottom: 0.3em;
  margin-top: 0;
}

#preview h2,
.preview-content h2 {
  font-size: 1.5em;
  border-bottom: 1px solid #eaecef;
  padding-bottom: 0.3em;
}

#preview p,
.preview-content p {
  margin-bottom: 16px;
  line-height: 1.6;
}

#preview code,
.preview-content code,
[id^='preview-'] code {
  padding: 0.2em 0.4em;
  margin: 0;
  font-size: 85%;
  background-color: #f6f8fa;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  font-family:
    'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas,
    'Liberation Mono', monospace;
  color: #24292f;
}

#preview pre,
.preview-content pre,
[id^='preview-'] pre {
  padding: 16px;
  overflow: auto;
  font-size: 85%;
  line-height: 1.45;
  background-color: #f6f8fa;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  margin-bottom: 16px;
}

#preview pre code,
.preview-content pre code {
  display: inline;
  max-width: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  line-height: inherit;
  word-wrap: normal;
  background-color: transparent;
  border: 0;
}

#preview blockquote,
.preview-content blockquote {
  padding: 0 1em;
  color: #6a737d;
  border-left: 0.25em solid #dfe2e5;
  margin-bottom: 16px;
}

/* GitHub Dark Theme for Preview (matches all dark themes) */
body[class*='dark'] #preview,
body[class*='dark'] [id^='preview-'],
body[class*='dark'] .preview-content {
  background: #0d1117;
  color: #c9d1d9;
}

body[class*='dark'] #preview h1,
body[class*='dark'] [id^='preview-'] h1,
body[class*='dark'] .preview-content h1 {
  color: #c9d1d9;
  border-bottom-color: #21262d;
}

body[class*='dark'] #preview h2,
body[class*='dark'] [id^='preview-'] h2,
body[class*='dark'] .preview-content h2 {
  color: #c9d1d9;
  border-bottom-color: #21262d;
}

body[class*='dark'] #preview h3,
body[class*='dark'] #preview h4,
body[class*='dark'] #preview h5,
body[class*='dark'] #preview h6,
body[class*='dark'] [id^='preview-'] h3,
body[class*='dark'] [id^='preview-'] h4,
body[class*='dark'] [id^='preview-'] h5,
body[class*='dark'] [id^='preview-'] h6,
body[class*='dark'] .preview-content h3,
body[class*='dark'] .preview-content h4,
body[class*='dark'] .preview-content h5,
body[class*='dark'] .preview-content h6 {
  color: #c9d1d9;
}

body[class*='dark'] #preview p,
body[class*='dark'] [id^='preview-'] p,
body[class*='dark'] .preview-content p {
  color: #c9d1d9;
}

body[class*='dark'] #preview code,
body[class*='dark'] [id^='preview-'] code,
body[class*='dark'] .preview-content code {
  background-color: #161b22;
  border-color: #30363d;
  color: #c9d1d9;
}

body[class*='dark'] #preview pre,
body[class*='dark'] [id^='preview-'] pre,
body[class*='dark'] .preview-content pre {
  background-color: #161b22;
  border-color: #30363d;
}

body[class*='dark'] #preview blockquote,
body[class*='dark'] [id^='preview-'] blockquote,
body[class*='dark'] .preview-content blockquote {
  color: #8b949e;
  border-left-color: #3b434b;
}

body[class*='dark'] #preview a,
body[class*='dark'] [id^='preview-'] a,
body[class*='dark'] .preview-content a {
  color: #58a6ff;
}

body[class*='dark'] #preview a:hover,
body[class*='dark'] [id^='preview-'] a:hover,
body[class*='dark'] .preview-content a:hover {
  color: #79c0ff;
}

body[class*='dark'] #preview table,
body[class*='dark'] [id^='preview-'] table,
body[class*='dark'] .preview-content table {
  border-color: #30363d;
}

body[class*='dark'] #preview table th,
body[class*='dark'] [id^='preview-'] table th,
body[class*='dark'] .preview-content table th {
  background-color: #161b22;
  color: #c9d1d9;
  border-color: #30363d;
}

body[class*='dark'] #preview table td,
body[class*='dark'] [id^='preview-'] table td,
body[class*='dark'] .preview-content table td {
  border-color: #30363d;
  color: #c9d1d9;
}

body[class*='dark'] #preview hr,
body[class*='dark'] [id^='preview-'] hr,
body[class*='dark'] .preview-content hr {
  background-color: #21262d;
  border-color: #21262d;
}

body[class*='dark'] #preview ul,
body[class*='dark'] #preview ol,
body[class*='dark'] [id^='preview-'] ul,
body[class*='dark'] [id^='preview-'] ol,
body[class*='dark'] .preview-content ul,
body[class*='dark'] .preview-content ol {
  color: #c9d1d9;
}

body[class*='dark'] #preview li,
body[class*='dark'] [id^='preview-'] li,
body[class*='dark'] .preview-content li {
  color: #c9d1d9;
}

#preview ul,
#preview ol,
.preview-content ul,
.preview-content ol {
  padding-left: 2em;
  margin-bottom: 16px;
}

#preview li,
.preview-content li {
  margin-bottom: 4px;
}

#preview a,
.preview-content a {
  color: #0366d6;
  text-decoration: none;
}

#preview a:hover,
.preview-content a:hover {
  text-decoration: underline;
}

#preview img,
.preview-content img {
  max-width: 100%;
  height: auto;
}

#preview table,
.preview-content table {
  border-collapse: collapse;
  margin-bottom: 16px;
  width: 100%;
}

#preview table th,
#preview table td,
.preview-content table th,
.preview-content table td {
  padding: 6px 13px;
  border: 1px solid #dfe2e5;
}

#preview table th,
.preview-content table th {
  font-weight: 600;
  background-color: #f6f8fa;
}

#preview table tr:nth-child(2n),
.preview-content table tr:nth-child(2n) {
  background-color: #ffffff;
}

/* Theme: Dark */
body[class*='dark'] {
  background: #1e1e1e;
  color: #d4d4d4;
}

body[class*='dark'] .tab-bar {
  background: #2d2d30;
  border-bottom-color: #3e3e42;
}

body[class*='dark'] .tab {
  background: #3c3c3c;
  border-color: #555;
  color: #d4d4d4;
}

body[class*='dark'] .tab.active {
  background: #1e1e1e;
  border-color: #666;
}

body[class*='dark'] .tab-close {
  color: #ccc;
}

body[class*='dark'] .tab-close:hover {
  background: #555;
  color: #fff;
}

body[class*='dark'] .new-tab-button {
  border-color: #555;
  color: #ccc;
}

body[class*='dark'] .new-tab-button:hover {
  background: #3c3c3c;
}

body[class*='dark'] .toolbar {
  background: #2d2d30;
  border-bottom-color: #3e3e42;
}

body[class*='dark'] .toolbar button {
  color: #cccccc;
}

body[class*='dark'] .toolbar button:hover {
  background: #3e3e42;
  border-color: #464647;
}

body[class*='dark'] .toolbar-separator {
  background: #3e3e42;
}

body[class*='dark'] .pane:first-child {
  border-right-color: #3e3e42;
}

body[class*='dark'] .editor-textarea {
  background: #1e1e1e;
  color: #d4d4d4;
}

body[class*='dark'] .pane:last-child {
  background: #1e1e1e;
}

/* Legacy support */
body[class*='dark'] #editor-pane {
  border-right-color: #3e3e42;
}

body[class*='dark'] #editor {
  background: #1e1e1e;
  color: #d4d4d4;
}

body[class*='dark'] #preview-pane {
  background: #252526;
}

body[class*='dark'] #preview,
body[class*='dark'] .preview-content {
  color: #d4d4d4;
}

body[class*='dark'] #preview h1,
body[class*='dark'] #preview h2,
body[class*='dark'] .preview-content h1,
body[class*='dark'] .preview-content h2 {
  border-bottom-color: #3e3e42;
}

body[class*='dark'] #preview code,
body[class*='dark'] .preview-content code {
  background-color: rgba(255, 255, 255, 0.1);
}

body[class*='dark'] #preview pre,
body[class*='dark'] .preview-content pre {
  background-color: #2d2d30;
}

body[class*='dark'] #preview blockquote,
body[class*='dark'] .preview-content blockquote {
  color: #808080;
  border-left-color: #3e3e42;
}

body[class*='dark'] #preview a,
body[class*='dark'] .preview-content a {
  color: #569cd6;
}

body[class*='dark'] #preview table th,
body[class*='dark'] #preview table td,
body[class*='dark'] .preview-content table th,
body[class*='dark'] .preview-content table td {
  border-color: #3e3e42;
}

body[class*='dark'] #preview table tr:nth-child(2n),
body[class*='dark'] .preview-content table tr:nth-child(2n) {
  background-color: #2d2d30;
}

body[class*='dark'] .status-bar {
  background: #2d2d30;
  border-top-color: #3e3e42;
  color: #969696;
}

/* Hide preview pane by default */
.pane.hidden {
  display: none;
}

.pane.full-width {
  border-right: none;
}

/* Legacy support */
#preview-pane.hidden {
  display: none;
}

#editor-pane.full-width {
  border-right: none;
}

/* Editor Wrapper with Line Numbers */
.editor-wrapper {
  position: relative;
  display: flex;
  height: 100%;
}

.line-numbers {
  min-width: 40px;
  padding: 8px 4px;
  background: #f8f8f8;
  border-right: 1px solid #ddd;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 13px;
  line-height: 1.4;
  color: #666;
  text-align: right;
  user-select: none;
  overflow: hidden;
}

.line-numbers.hidden {
  display: none;
}

.line-numbers .line-number {
  display: block;
  white-space: nowrap;
}

/* Adjust editor when line numbers are shown */
.editor-wrapper #editor {
  flex: 1;
}

body[class*='dark'] .line-numbers {
  background: #2a2a2a;
  border-right-color: #555;
  color: #888;
}

/* Additional theme support for line numbers */

/* Export Presets Styles */
.export-presets {
  border-bottom: 1px solid #ddd;
  padding-bottom: 15px;
  margin-bottom: 15px;
}

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

.preset-dropdown {
  flex: 1;
  position: relative;
}

.preset-dropdown button {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: #f5f5f5;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.preset-dropdown button:hover {
  background: #e8e8e8;
}

#preset-dropdown-toggle {
  width: 100%;
  text-align: left;
}

.preset-dropdown-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 220px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  z-index: 10;
}

.preset-dropdown-list.hidden {
  display: none;
}

.preset-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
}

.preset-row.selected {
  background: #eef4fb;
}

.preset-row:hover {
  background: #f0f0f0;
}

.preset-row-select {
  flex: 1;
  border: none;
  background: none;
  text-align: left;
  padding: 6px 4px;
  cursor: pointer;
  font-size: 13px;
}

.preset-format {
  font-size: 11px;
  text-transform: uppercase;
  color: #586069;
  border: 1px solid #ddd;
  border-radius: 3px;
  padding: 1px 4px;
}

.preset-delete {
  border: none;
  background: none;
  color: #586069;
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  padding: 4px 6px;
}

.preset-delete:hover {
  color: #cb2431;
}

.preset-empty {
  padding: 8px;
  font-size: 13px;
  color: #586069;
}

#save-preset-btn {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: #f5f5f5;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

#save-preset-btn:hover {
  background: #e8e8e8;
}

/* Advanced Export Toggle Styles */
.export-mode-toggle {
  border-bottom: 1px solid #ddd;
  padding-bottom: 15px;
  margin-bottom: 20px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: 500;
  margin-bottom: 5px;
}

.checkbox-label input[type='checkbox'] {
  margin-right: 10px;
  transform: scale(1.2);
}

.export-help {
  color: #666;
  font-size: 12px;
  font-style: italic;
  margin-left: 25px;
}

.advanced-options {
  transition: all 0.3s ease;
  overflow: visible;
  position: relative;
  z-index: 10;
}

.advanced-options.hidden {
  display: none;
}

.basic-options {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 6px;
  padding: 15px;
  margin-top: 10px;
}

.basic-options label {
  font-weight: normal;
  margin-bottom: 8px;
}

/* Theme support for advanced export toggle */
body[class*='dark'] .export-mode-toggle {
  border-color: #444;
}

body[class*='dark'] .export-help {
  color: #999;
}

body[class*='dark'] .basic-options {
  background: #1a1a1a;
  border-color: #444;
}

body[class*='dark'] .checkbox-label {
  color: #f0f0f0;
}

/* Enhanced Statistics Styles */
.enhanced-stats {
  font-size: 11px;
  color: #666;
  padding: 2px 0;
  border-top: 1px solid #ddd;
  margin-top: 2px;
  font-family: monospace;
}

/* Theme support for enhanced stats */
body[class*='dark'] .enhanced-stats {
  color: #999;
  border-color: #444;
}

/* Auto-save indicator */
.auto-save-indicator {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #28a745;
  color: white;
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  z-index: 10000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  animation: slideInRight 0.3s ease-out;
}

.auto-save-indicator.fade-out {
  animation: fadeOut 0.3s ease-out forwards;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* Print Styles */
@media print {
  /* Hide UI elements for clean print output */
  #toolbar,
  #tab-bar,
  #editor-container,
  .editor-container,
  #status-bar,
  .status-bar,
  .toolbar,
  .tab-bar,
  .editor-pane,
  [id^='editor-pane-'],
  .dialog,
  .modal-overlay {
    display: none !important;
  }

  /* Ensure body and html take full width */
  html,
  body {
    width: 100% !important;
    height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
  }

  /* Show preview in full width */
  #preview,
  .preview,
  .preview-content,
  [id^='preview-'],
  [id^='preview-pane-'],
  .tab-content,
  .pane {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    margin: 0 !important;
    padding: 20px !important;
    overflow: visible !important;
    position: static !important;
    left: auto !important;
    right: auto !important;
    top: auto !important;
    bottom: auto !important;
  }

  /* Optimize preview content for printing */
  .preview-content,
  [id^='preview-'] {
    line-height: 1.6;
    font-size: 12pt;
    color: #000 !important;
    background: white !important;
  }

  /* No-styles mode for printing without theme colors */
  body.printing-no-styles .preview-content,
  body.printing-no-styles [id^='preview-'] {
    color: #000 !important;
    background: #fff !important;
  }

  /* Text formatting */
  .preview-content h1,
  .preview-content h2,
  .preview-content h3,
  .preview-content h4,
  .preview-content h5,
  .preview-content h6 {
    page-break-after: avoid;
    margin-top: 1em;
    margin-bottom: 0.5em;
  }

  .preview-content p {
    margin-bottom: 0.5em;
    page-break-inside: avoid;
  }

  /* Code blocks */
  .preview-content pre {
    background: #f5f5f5 !important;
    border: 1px solid #ddd !important;
    page-break-inside: avoid;
    padding: 10px;
    font-size: 10pt;
  }

  .preview-content code {
    background: #f5f5f5 !important;
    color: #000 !important;
    font-size: 10pt;
  }

  /* Lists */
  .preview-content ul,
  .preview-content ol {
    margin-left: 20px;
    page-break-inside: avoid;
  }

  .preview-content li {
    page-break-inside: avoid;
    margin-bottom: 0.3em;
  }

  /* Tables */
  .preview-content table {
    width: 100%;
    border-collapse: collapse;
    page-break-inside: avoid;
    margin-bottom: 1em;
  }

  .preview-content th,
  .preview-content td {
    border: 1px solid #999 !important;
    padding: 8px !important;
    text-align: left;
  }

  .preview-content th {
    background: #f0f0f0 !important;
    font-weight: bold;
  }

  /* Links - remove underline for print */
  .preview-content a {
    color: #000 !important;
    text-decoration: none;
  }

  /* Blockquotes */
  .preview-content blockquote {
    border-left: 3px solid #ccc;
    padding-left: 15px;
    margin-left: 0;
    color: #333 !important;
  }

  /* Images */
  .preview-content img {
    max-width: 100%;
    height: auto;
    page-break-inside: avoid;
  }

  /* Horizontal rules */
  .preview-content hr {
    border: none;
    border-top: 1px solid #999;
    margin: 1em 0;
  }
}

/* Print mode classes */
.print-mode {
  display: block !important;
  width: 100% !important;
  max-width: 100% !important;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  z-index: 9999 !important;
  background: white !important;
  padding: 20px !important;
}

/* Ensure preview panes are visible in print mode */
#preview-pane-1,
#preview-pane-2,
#preview-pane-3,
#preview-pane-4,
#preview-pane-5 {
  display: block !important;
}

/* No-styles printing mode */
body.printing-no-styles .preview-content,
body.printing-no-styles [id^='preview-'],
.print-no-styles .preview-content {
  color: #000 !important;
  background: white !important;
}

body.printing-no-styles .preview-content h1,
body.printing-no-styles .preview-content h2,
body.printing-no-styles .preview-content h3,
body.printing-no-styles .preview-content h4,
body.printing-no-styles .preview-content h5,
body.printing-no-styles .preview-content h6,
.print-no-styles .preview-content h1,
.print-no-styles .preview-content h2,
.print-no-styles .preview-content h3,
.print-no-styles .preview-content h4,
.print-no-styles .preview-content h5,
.print-no-styles .preview-content h6 {
  color: #000 !important;
  border-color: #999 !important;
}

body.printing-no-styles .preview-content code,
.print-no-styles .preview-content code {
  background: #f5f5f5 !important;
  color: #000 !important;
}

body.printing-no-styles .preview-content pre,
.print-no-styles .preview-content pre {
  background: #f5f5f5 !important;
  color: #000 !important;
  border-color: #999 !important;
}

.print-no-styles .preview-content a {
  color: #000 !important;
}

.print-no-styles .preview-content blockquote {
  color: #333 !important;
  border-color: #999 !important;
}

/* ================================
   Header & Footer Dialog Styles
   ================================ */

.hf-enable-section {
  margin-bottom: 20px;
  padding: 15px;
  background: var(--bg-secondary, #f5f5f5);
  border-radius: 5px;
}

.hf-enable-section label {
  display: flex;
  align-items: center;
  font-weight: 600;
  cursor: pointer;
}

.hf-enable-section input[type='checkbox'] {
  margin-right: 10px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

#hf-config-content {
  transition: opacity 0.3s ease;
}

#hf-config-content.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.hf-section {
  margin-bottom: 25px;
  padding: 20px;
  background: var(--bg-tertiary, #fafafa);
  border-radius: 8px;
  border: 1px solid var(--border-color, #e0e0e0);
}

.hf-section h4 {
  margin: 0 0 15px 0;
  color: var(--text-primary, #333);
  font-size: 16px;
  border-bottom: 2px solid var(--accent-color, #007bff);
  padding-bottom: 8px;
}

.hf-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin-bottom: 15px;
}

.hf-column {
  display: flex;
  flex-direction: column;
  position: relative;
}

.hf-column label {
  font-weight: 600;
  margin-bottom: 5px;
  color: var(--text-secondary, #666);
  font-size: 13px;
}

.hf-column input[type='text'] {
  padding: 8px 35px 8px 10px;
  border: 1px solid var(--border-color, #ccc);
  border-radius: 4px;
  font-size: 14px;
  background: var(--input-bg, white);
  color: var(--text-primary, #333);
  transition: border-color 0.2s ease;
}

.hf-column input[type='text']:focus {
  outline: none;
  border-color: var(--accent-color, #007bff);
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.1);
}

.field-insert-btn {
  position: absolute;
  right: 5px;
  bottom: 5px;
  width: 28px;
  height: 28px;
  padding: 0;
  background: var(--accent-color, #007bff);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  transition: all 0.2s ease;
}

.field-insert-btn:hover {
  background: var(--accent-hover, #0056b3);
  transform: scale(1.05);
}

.field-insert-btn:active {
  transform: scale(0.95);
}

.hf-logo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px;
  background: var(--bg-secondary, #f5f5f5);
  border-radius: 6px;
  margin-top: 10px;
}

.hf-logo-row label {
  font-weight: 600;
  color: var(--text-secondary, #666);
  min-width: 120px;
}

.hf-logo-row input[type='file'] {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--border-color, #ccc);
  border-radius: 4px;
  background: var(--input-bg, white);
  color: var(--text-primary, #333);
  font-size: 13px;
  cursor: pointer;
}

.hf-logo-row input[type='file']::-webkit-file-upload-button {
  padding: 5px 12px;
  background: var(--button-bg, #6c757d);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-right: 10px;
}

.hf-logo-row input[type='file']::-webkit-file-upload-button:hover {
  background: var(--button-hover, #5a6268);
}

.browse-btn {
  padding: 6px 12px;
  background: var(--accent-color, #007bff);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.2s ease;
  margin-right: 8px;
}

.browse-btn:hover {
  background: var(--accent-hover, #0056b3);
}

.clear-btn {
  padding: 6px 12px;
  background: var(--danger-color, #dc3545);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.2s ease;
}

.clear-btn:hover {
  background: var(--danger-hover, #c82333);
}

.logo-preview {
  font-size: 12px;
  color: var(--text-secondary, #666);
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hf-help {
  margin-top: 20px;
  padding: 15px;
  background: var(--info-bg, #e7f3ff);
  border-left: 4px solid var(--info-color, #007bff);
  border-radius: 4px;
}

.hf-help p {
  margin: 0 0 10px 0;
  font-weight: 600;
  color: var(--text-primary, #333);
}

.hf-help ul {
  margin: 0;
  padding-left: 20px;
  list-style-type: none;
}

.hf-help li {
  margin-bottom: 6px;
  color: var(--text-secondary, #555);
  font-size: 13px;
}

.hf-help code {
  background: rgba(0, 123, 255, 0.1);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  color: var(--accent-color, #007bff);
  font-weight: 600;
}

/* Field Picker Dialog */
.field-picker-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.field-option {
  padding: 12px 16px;
  background: var(--bg-secondary, #f5f5f5);
  border: 1px solid var(--border-color, #ddd);
  border-radius: 6px;
  text-align: left;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-primary, #333);
  transition: all 0.2s ease;
}

.field-option:hover {
  background: var(--accent-color, #007bff);
  color: white;
  border-color: var(--accent-color, #007bff);
  transform: translateX(5px);
}

/* Dark Theme Support for Header/Footer Dialog */
body[data-theme='dark'] .hf-enable-section,
body[data-theme='dark'] .hf-logo-row {
  background: #2d2d2d;
}

body[data-theme='dark'] .hf-section {
  background: #252525;
  border-color: #404040;
}

body[data-theme='dark'] .hf-column input[type='text'],
body[data-theme='dark'] .hf-logo-row input[type='file'] {
  background: #2d2d2d;
  color: #e0e0e0;
  border-color: #404040;
}

body[data-theme='dark'] .hf-help {
  background: rgba(0, 123, 255, 0.15);
  border-left-color: #0d6efd;
}

body[data-theme='dark'] .field-option {
  background: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

body[data-theme='dark'] .field-option:hover {
  background: #0d6efd;
  color: white;
}

/* ================================
   Word Template Dialog Styles
   ================================ */

.wt-status-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  margin-bottom: 20px;
  padding: 15px;
  background: var(--bg-secondary, #f5f5f5);
  border-radius: 8px;
  border: 1px solid var(--border-color, #e0e0e0);
}

.wt-status {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.wt-status-icon {
  font-size: 28px;
  line-height: 1;
  flex-shrink: 0;
}

.wt-status-text {
  min-width: 0;
}

.wt-status-title {
  font-weight: 600;
  color: var(--text-primary, #333);
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.wt-status-detail {
  font-size: 12px;
  color: var(--text-secondary, #666);
  margin-top: 2px;
}

.wt-status-missing .wt-status-detail {
  color: var(--danger-color, #dc3545);
}

.wt-status-selected .wt-status-detail {
  color: var(--accent-color, #007bff);
}

.wt-status-actions {
  display: flex;
  flex-shrink: 0;
}

.wt-startpage-section {
  padding: 15px;
  background: var(--bg-tertiary, #fafafa);
  border-radius: 8px;
  border: 1px solid var(--border-color, #e0e0e0);
}

.wt-startpage-section label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary, #666);
  font-size: 13px;
}

.wt-startpage-section input[type='number'] {
  width: 100px;
  padding: 8px 10px;
  border: 1px solid var(--border-color, #ccc);
  border-radius: 4px;
  font-size: 14px;
  background: var(--input-bg, white);
  color: var(--text-primary, #333);
}

.wt-startpage-section input[type='number']:focus {
  outline: none;
  border-color: var(--accent-color, #007bff);
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.1);
}

.wt-help {
  margin: 10px 0 0 0;
  font-size: 12px;
  color: var(--text-secondary, #666);
}

body[data-theme='dark'] .wt-status-section,
body[data-theme='dark'] .wt-startpage-section {
  background: #252525;
  border-color: #404040;
}

body[data-theme='dark'] .wt-startpage-section input[type='number'] {
  background: #2d2d2d;
  color: #e0e0e0;
  border-color: #404040;
}

/* Mermaid Diagram Styles */
.mermaid {
  background: #f9f9f9;
  padding: 20px;
  border-radius: 8px;
  margin: 20px 0;
  text-align: center;
  border: 1px solid #e0e0e0;
}

.mermaid svg {
  max-width: 100%;
  height: auto;
}

body[class*='dark'] .mermaid {
  background: #2d2d2d;
  border-color: #444;
}

/* Task List Styles */
.preview-content input[type='checkbox'] {
  margin-right: 6px;
  pointer-events: none;
}
.preview-content li.task-list-item {
  list-style: none;
  margin-left: -20px;
}

/* Admonition Styles */
.admonition {
  border-left: 4px solid;
  border-radius: 4px;
  padding: 12px 16px;
  margin: 16px 0;
}
.admonition-title {
  font-weight: 600;
  margin-bottom: 8px;
}
.admonition-note,
.admonition-info {
  border-color: #3b82f6;
  background: #eff6ff;
}
.admonition-warning {
  border-color: #f59e0b;
  background: #fffbeb;
}
.admonition-tip {
  border-color: #10b981;
  background: #ecfdf5;
}
.admonition-danger {
  border-color: #ef4444;
  background: #fef2f2;
}

/* TOC Styles */
.toc {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 16px;
  margin: 16px 0;
}
.toc h2 {
  font-size: 14px;
  margin-bottom: 8px;
}
.toc ul {
  list-style: none;
  padding: 0;
}
.toc li {
  padding: 2px 0;
}
.toc .toc-h1 {
  padding-left: 0;
}
.toc .toc-h2 {
  padding-left: 16px;
}
.toc .toc-h3 {
  padding-left: 32px;
}
.toc .toc-h4 {
  padding-left: 48px;
}
.toc a {
  color: #5661b3;
  text-decoration: none;
}
.toc a:hover {
  text-decoration: underline;
}

/* Command Palette Styles */
/* Command Palette styles moved to styles-modern.css */

/* ============================================
   Global Focus & Accessibility Styles
   ============================================ */

/* Remove default focus outline, use focus-visible instead */
*:focus {
  outline: none;
}

/* Add visible focus indicator for keyboard navigation */
*:focus-visible {
  outline: 2px solid var(--primary-dark, #5661b3);
  outline-offset: 2px;
}

/* Button focus styles */
button:focus-visible {
  outline: 2px solid var(--primary-dark, #5661b3);
  outline-offset: 2px;
}

/* Link focus styles */
a:focus-visible {
  outline: 2px solid var(--primary-dark, #5661b3);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Input focus styles */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--primary-dark, #5661b3);
  outline-offset: 1px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--primary-dark, #5661b3);
  color: white;
  padding: 8px 16px;
  z-index: 10000;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
}

/* Visually hidden but accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .tab-close:focus-visible,
  .toolbar button:focus-visible,
  .sidebar-icon:focus-visible {
    outline-width: 3px;
  }
}