/* Same Photoshop-style dark theme as Markdown Editor / Portfolio */
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  margin: 0;
  padding: 0;
  background: #1a1a1a;
  transition: background-color 0.3s ease;
}

/* Disable transitions during theme change so all panels update in sync */
body.theme-switching,
body.theme-switching * {
  transition: none !important;
}

.container {
  display: flex;
  height: 100vh;
}

/* ----- Left panel ----- */
.controls {
  width: var(--controls-width, 260px);
  min-width: 200px;
  max-width: 480px;
  flex-shrink: 0;
  background: #2b2b2b;
  border-right: 1px solid #1a1a1a;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* ----- Panel resizers ----- */
.panel-resizer {
  width: 6px;
  flex-shrink: 0;
  background: #252525;
  border-left: 1px solid #1a1a1a;
  border-right: 1px solid #1a1a1a;
  cursor: col-resize;
  position: relative;
}

.panel-resizer:hover,
.panel-resizer.resizing {
  background: #0d7acc;
  border-left-color: #0d7acc;
  border-right-color: #0d7acc;
  opacity: 0.8;
}

.panel-resizer::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

/* Controls footer & theme switch */
.controls-footer {
  margin-top: auto;
  padding: 10px 12px 12px;
  background: #252525;
  border-top: 1px solid #1f1f1f;
  position: relative;
  flex-shrink: 0;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.theme-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.controls-footer .theme-switch-label {
  font-size: 11px;
  color: #a3a3a3;
  min-width: 28px;
}

.controls-footer .theme-switch-label:first-of-type {
  text-align: right;
}

.controls-footer .theme-switch-label:last-of-type {
  text-align: left;
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  padding: 2px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  flex-shrink: 0;
}

.theme-switch-track {
  position: relative;
  width: 40px;
  height: 22px;
  border-radius: 11px;
  background: #404040;
  border: 1px solid #505050;
  transition: background 0.2s, border-color 0.2s;
}

.theme-switch:hover .theme-switch-track {
  background: #484848;
  border-color: #606060;
}

.theme-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #e0e0e0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease;
}

.theme-switch[aria-checked="true"] .theme-switch-thumb {
  transform: translateX(18px);
}

.theme-switch[aria-checked="true"] .theme-switch-track {
  background: #0d7acc;
  border-color: #0d7acc;
}

.theme-switch[aria-checked="true"]:hover .theme-switch-track {
  background: #1a8ae0;
  border-color: #1a8ae0;
}

.theme-switch:focus-visible {
  outline: 2px solid #0d7acc;
  outline-offset: 2px;
  border-radius: 13px;
}

.material-symbols-outlined {
  font-family: "Material Symbols Outlined";
  font-weight: 400;
  font-style: normal;
  font-size: 1.25rem;
  line-height: 1;
  letter-spacing: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Settings section in left panel */
.settings-panel-content {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.settings-intro {
  margin: 0 0 12px;
  font-size: 11px;
  color: #888;
  line-height: 1.4;
}

.settings-block {
  padding: 12px 0;
  border-bottom: 1px solid #3d3d3d;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.settings-block:last-of-type {
  border-bottom: none;
}

.settings-block-title {
  margin: 0 0 6px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #888;
  font-family: inherit;
}

.settings-block-hint {
  margin: 0;
  font-size: 10px;
  color: #777;
  line-height: 1.35;
}

.settings-row {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 12px;
  color: #e0e0e0;
  padding: 2px 0;
  border-radius: 3px;
  transition: background 0.12s ease;
}

.settings-row:hover {
  background: rgba(255, 255, 255, 0.04);
}

.settings-row input[type="checkbox"] {
  margin: 0;
  flex-shrink: 0;
}

.settings-row-label {
  flex: 1;
  min-width: 0;
}

.settings-row-with-input {
  cursor: default;
  flex-wrap: wrap;
}

.settings-row-with-input:hover {
  background: transparent;
}

.settings-row-with-input .settings-input-num {
  width: 52px;
  text-align: right;
}

.settings-footer {
  padding: 10px 0 2px;
  margin-top: 6px;
  border-top: 1px solid #3d3d3d;
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.settings-section-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: #888;
  display: block;
  margin-bottom: 2px;
}

.settings-theme-toggle {
  display: flex;
  gap: 0;
  border: 1px solid #505050;
  border-radius: 4px;
  overflow: hidden;
  background: #404040;
}

.settings-toggle-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 500;
  color: #b0b0b0;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.settings-toggle-btn:hover {
  color: #e0e0e0;
  background: rgba(255, 255, 255, 0.06);
}

.settings-toggle-btn.active {
  color: #fff;
  background: #0d7acc;
}

.settings-toggle-btn + .settings-toggle-btn {
  border-left: 1px solid #505050;
}

.settings-hint-text {
  margin: 0;
  font-size: 11px;
  color: #888;
  line-height: 1.4;
}

.settings-option {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 11px;
  color: #e0e0e0;
}

.settings-option input[type="checkbox"] {
  margin: 0;
  flex-shrink: 0;
}

.settings-option .settings-option-label {
  margin: 0;
}

.shortcuts-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: #b8b8b8;
}

.shortcut-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: inherit;
}

.shortcuts-list kbd {
  display: inline-block;
  padding: 2px 5px;
  font-size: 10px;
  background: #404040;
  border: 1px solid #505050;
  border-radius: 2px;
  color: #e0e0e0;
  flex-shrink: 0;
}

/* ----- Welcome modal (first load) ----- */
.welcome-modal {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
}

.welcome-modal.hidden {
  display: none !important;
}

.welcome-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
}

.welcome-modal-content {
  position: relative;
  width: 100%;
  max-width: 440px;
  padding: 0;
  background: #2b2b2b;
  border: 1px solid #505050;
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.welcome-modal-header {
  padding: 22px 24px 16px;
  background: #252525;
  border-bottom: 1px solid #404040;
}

.welcome-modal-title {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.02em;
}

.welcome-modal-subtitle {
  margin: 0;
  font-size: 11px;
  font-weight: 500;
  color: #888;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.welcome-modal-text {
  margin: 0;
  padding: 20px 24px 0;
  font-size: 12px;
  line-height: 1.55;
  color: #b8b8b8;
}

.welcome-modal-dont-show {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 24px 0;
  font-size: 11px;
  color: #b0b0b0;
  cursor: pointer;
}

.welcome-modal-dont-show input {
  margin: 0;
}

.welcome-modal-btn {
  display: block;
  width: calc(100% - 48px);
  margin: 20px 24px 0;
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 500;
}

.welcome-modal-credit {
  margin: 0;
  padding: 16px 24px 20px;
  font-size: 10px;
  color: #707070;
  text-align: center;
  border-top: 1px solid #323232;
}

.welcome-modal-link {
  color: #0d7acc;
  text-decoration: none;
}

.welcome-modal-link:hover {
  text-decoration: underline;
}

/* ----- PDF preview modal ----- */
.pdf-preview-modal {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
}

.pdf-preview-modal.hidden {
  display: none !important;
}

.pdf-preview-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
}

.pdf-preview-modal-content {
  position: relative;
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  background: #2b2b2b;
  border: 1px solid #505050;
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.pdf-preview-modal-header {
  padding: 14px 20px;
  background: #252525;
  border-bottom: 1px solid #404040;
  flex-shrink: 0;
}

.pdf-preview-modal-title {
  margin: 0 0 2px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.pdf-preview-modal-subtitle {
  margin: 0;
  font-size: 11px;
  color: #888;
}

.pdf-preview-modal-body {
  padding: 16px 20px;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pdf-preview-filename-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.pdf-preview-filename-label {
  font-size: 11px;
  font-weight: 600;
  color: #b0b0b0;
  min-width: 64px;
}

.pdf-preview-filename-input {
  flex: 1;
  max-width: 240px;
}

.pdf-preview-scroll {
  flex: 1;
  min-height: 200px;
  max-height: 50vh;
  overflow: auto;
  background: #1a1a1a;
  border: 1px solid #404040;
  border-radius: 4px;
  padding: 12px;
}

.pdf-preview-content {
  width: 100%;
  min-height: 100%;
  padding: 32px;
  margin: 0 auto;
  max-width: 596px;
  background: #fff;
  color: #222;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 11pt;
  line-height: 1.5;
  box-sizing: border-box;
}

.pdf-preview-content h1 { font-size: 18pt; color: #222; margin: 0.5em 0 0.3em; }
.pdf-preview-content h2 { font-size: 14pt; color: #222; margin: 0.5em 0 0.3em; }
.pdf-preview-content h3, .pdf-preview-content h4, .pdf-preview-content h5, .pdf-preview-content h6 { color: #222; margin: 0.4em 0 0.2em; }
.pdf-preview-content p { margin: 0 0 0.75em; }
.pdf-preview-content code { background: #f0f0f0; color: #333; padding: 2px 5px; border-radius: 2px; }
.pdf-preview-content pre { background: #f5f5f5; padding: 10px; border: 1px solid #ddd; overflow-x: auto; margin: 0 0 0.75em; }
.pdf-preview-content pre code { background: none; padding: 0; }
.pdf-preview-content a { color: #0d7acc; }
.pdf-preview-content table { border-collapse: collapse; width: 100%; margin: 0.5em 0; }
.pdf-preview-content th, .pdf-preview-content td { border: 1px solid #333; padding: 4px 8px; text-align: left; }
.pdf-preview-content th { background: #e8e8e8; font-weight: 600; }

.pdf-preview-modal-footer {
  padding: 12px 20px 16px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: #252525;
  border-top: 1px solid #404040;
  flex-shrink: 0;
}

.panel-header {
  height: 36px;
  min-height: 36px;
  padding: 0 12px;
  background: #252525;
  border-bottom: 1px solid #1a1a1a;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.panel-title {
  font-size: 11px;
  font-weight: 600;
  color: #bdbdbd;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color 0.3s ease;
}

.panel-close-btn {
  display: none;
  margin-left: auto;
  padding: 4px;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: #e0e0e0;
  cursor: pointer;
  font-family: inherit;
}

.panel-close-btn .material-symbols-outlined {
  font-size: 20px;
  color: inherit;
}

.panel-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.editor-toolbar-mobile {
  display: none;
  align-items: center;
  gap: 4px;
}

.editor-toolbar-outline {
  display: none;
  align-items: center;
}

.panel-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1001;
  transition: opacity 0.2s ease;
}

.panel-backdrop.hidden {
  display: none !important;
}

.control-panel {
  border-bottom: 1px solid #1f1f1f;
}

.control-panel:last-of-type {
  border-bottom: none;
}

.panel-summary {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  color: #e0e0e0;
  letter-spacing: 0.3px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  background: #323232;
  border-top: 1px solid #3d3d3d;
  transition: background 0.12s, color 0.12s;
}

.panel-summary::-webkit-details-marker,
.panel-summary::marker {
  display: none;
}

.panel-summary::before {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid #888;
  border-top: 3px solid transparent;
  border-bottom: 3px solid transparent;
  margin-right: 8px;
  transition: transform 0.15s ease;
}

.control-panel[open] .panel-summary::before {
  transform: rotate(90deg);
}

.panel-summary:hover {
  background: #3a3a3a;
  color: #fff;
}

.panel-content {
  padding: 10px 12px 12px;
  background: #2b2b2b;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.panel-content label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 11px;
  color: #b8b8b8;
}

.panel-content .panel-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 2px;
}

.panel-content .panel-hint {
  display: block;
  font-size: 10px;
  color: #888;
  margin-bottom: 6px;
}

.help-syntax .panel-label {
  margin-top: 10px;
  margin-bottom: 2px;
}

.help-syntax .panel-label:first-child {
  margin-top: 0;
}

.help-syntax .panel-hint {
  margin-bottom: 4px;
  line-height: 1.4;
}

.panel-content .panel-section {
  margin-bottom: 14px;
}

.panel-content .panel-section:last-child {
  margin-bottom: 0;
}

.panel-sublabel {
  font-size: 10px;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.row-buttons {
  display: flex;
  gap: 6px;
}

.row-buttons .btn-panel {
  flex: 1;
}

/* Document panel – clearer structure and actions */
.doc-panel .panel-section {
  margin-bottom: 16px;
}

.doc-file-hidden {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.doc-actions {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.doc-action-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 500;
  text-align: left;
  font-family: inherit;
}

.doc-action-btn .doc-action-icon {
  font-family: "Material Symbols Outlined";
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: inherit;
  flex-shrink: 0;
}

.doc-action-btn .doc-action-text {
  flex: 1;
}

/* Export section – grouped Download vs Copy & print */
.doc-export-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.doc-export-heading {
  margin: 0 0 2px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #888;
}

.doc-export-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.doc-export-group-label {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: #707070;
  padding: 0 2px;
}

.doc-export-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.doc-export-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 500;
  text-align: left;
  font-family: inherit;
  border-radius: 2px;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.doc-export-btn .doc-export-icon {
  font-family: "Material Symbols Outlined";
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  color: inherit;
  flex-shrink: 0;
  opacity: 0.9;
}

.doc-export-btn .doc-export-btn-text {
  flex: 1;
}

.doc-export-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #e0e0e0;
}

/* Document name section – same heading style as Export */
.doc-filename-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.doc-filename-section .doc-export-heading {
  margin-bottom: 0;
}

.doc-filename-hint {
  margin: 0;
  font-size: 10px;
  color: #888;
  line-height: 1.3;
}

.doc-filename-input {
  width: 100%;
  box-sizing: border-box;
}

/* File label */
.file-label {
  position: relative;
  display: block;
  padding: 5px 8px;
  background: #404040;
  border: 1px solid #505050;
  border-radius: 2px;
  font-size: 11px;
  color: #b8b8b8;
  cursor: pointer;
}

.file-label:hover {
  background: #4a4a4a;
  border-color: #606060;
}

.file-label input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  font-size: 0;
}

.input-text {
  background: #404040;
  border: 1px solid #505050;
  color: #e8e8e8;
  padding: 5px 8px;
  font-size: 11px;
  border-radius: 2px;
  box-sizing: border-box;
}

.input-text:focus {
  outline: none;
  border-color: #0d7acc;
  box-shadow: 0 0 0 1px #0d7acc;
}

.input-text::placeholder {
  color: #707070;
}

.input-num {
  background: #404040;
  border: 1px solid #505050;
  color: #e8e8e8;
  padding: 5px 8px;
  font-size: 11px;
  border-radius: 2px;
  box-sizing: border-box;
}

.btn-panel {
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 500;
  color: #e0e0e0;
  background: #404040;
  border: 1px solid #505050;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}

.btn-panel:hover:not(:disabled) {
  background: #4a4a4a;
  border-color: #606060;
  color: #fff;
}

.btn-panel:active:not(:disabled) {
  background: #353535;
}

.btn-panel:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  color: #808080;
}

.btn-panel.btn-primary {
  background: #0d7acc;
  border-color: #0d7acc;
  color: #fff;
}

.btn-panel.btn-primary:hover:not(:disabled) {
  background: #1a8ae0;
  border-color: #1a8ae0;
}

.btn-panel.btn-sm {
  padding: 5px 8px;
  font-size: 10px;
}

.hidden {
  display: none !important;
}

/* ----- Editor area (replaces canvas) ----- */
.editor-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #1e1e1e;
  min-width: 0;
  transition: background-color 0.3s ease;
}

.editor-wrapper.drop-over {
  outline: 2px dashed #0d7acc;
  outline-offset: -2px;
  background: rgba(13, 122, 204, 0.08);
}

.editor-toolbar {
  height: 40px;
  min-height: 40px;
  padding: 0 16px 0 12px;
  background: #252525;
  border-bottom: 1px solid #1a1a1a;
  display: flex;
  align-items: stretch;
  flex-shrink: 0;
  gap: 12px;
}

.editor-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.editor-toolbar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: #808080;
  cursor: pointer;
  font-family: inherit;
}

.editor-toolbar-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #c0c0c0;
}

.editor-toolbar-btn .material-symbols-outlined {
  font-size: 20px;
}

/* Editor pane body: left format bar + textarea */
.editor-pane-body {
  flex: 1;
  min-height: 0;
  min-width: 0;
  display: flex;
  flex-direction: row;
  overflow: hidden;
}

/* Word-style format bar on the left – only visible when editing */
.editor-format-bar {
  width: 0;
  min-width: 0;
  overflow: hidden;
  flex-shrink: 0;
  background: #252525;
  border-right: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0;
  transition: width 0.15s ease, padding 0.15s ease;
}

.editor-format-bar.visible {
  width: 44px;
  padding: 8px 0;
  border-right: 1px solid #1a1a1a;
}

.editor-format-bar .format-toolbar {
  flex-direction: column;
  gap: 6px;
}

.editor-format-bar .format-toolbar-find {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid #3d3d3d;
}

/* Carousel arrows – hidden on desktop, shown on small screens via media query */
.editor-format-bar-arrow {
  display: none;
  flex-shrink: 0;
  width: 32px;
  min-width: 32px;
  height: 100%;
  padding: 0;
  background: #252525;
  border: none;
  color: #808080;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.12s, color 0.12s;
}

.editor-format-bar-arrow:hover {
  background: #323232;
  color: #e0e0e0;
}

.editor-format-bar-arrow:disabled {
  opacity: 0.4;
  cursor: default;
}

.editor-format-bar-arrow:disabled:hover {
  background: #252525;
  color: #808080;
}

.editor-format-bar-arrow .material-symbols-outlined {
  font-size: 20px;
}

.editor-format-bar-track {
  /* Desktop: column layout like original format bar */
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

/* Narrow editor pane: format bar as horizontal strip above editor */
@container editor-pane (max-width: 380px) {
  .editor-pane-body {
    flex-direction: column;
  }

  .editor-format-bar {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
    width: 0;
    min-height: 0;
    padding: 0;
    border-right: none;
    border-bottom: none;
    overflow: hidden;
  }

  .editor-format-bar:not(.visible) {
    min-height: 0;
    max-height: 0;
  }

  .editor-format-bar.visible {
    width: 100%;
    min-height: 40px;
    max-height: none;
    padding: 6px 8px;
    border-bottom: 1px solid #1a1a1a;
    overflow: visible;
  }

  .editor-format-bar .format-toolbar {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }

  .editor-format-bar .format-toolbar-find {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    margin-left: 8px;
    padding-left: 8px;
    border-left: 1px solid #3d3d3d;
  }
}

.view-mode-group {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.view-mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  font-size: 12px;
  font-weight: 500;
  color: #808080;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  font-family: inherit;
  margin-bottom: -1px;
}

.view-mode-btn:hover {
  color: #c0c0c0;
  background: rgba(255, 255, 255, 0.04);
}

.view-mode-btn.active {
  color: #fff;
  border-bottom-color: #0d7acc;
  background: transparent;
}

.view-mode-btn .view-mode-icon {
  font-family: "Material Symbols Outlined";
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: inherit;
}

.view-mode-btn .view-mode-label {
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 11px;
}

.editor-split {
  flex: 1;
  display: flex;
  min-height: 0;
}

.editor-pane,
.preview-pane {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  container-type: inline-size;
  container-name: editor-pane;
  border-right: 1px solid #404040;
  overflow: hidden;
}

.preview-pane {
  border-right: none;
  border-left: 1px solid #404040;
}

.pane-header {
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  color: #808080;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: #252525;
  border-bottom: 1px solid #1a1a1a;
  flex-shrink: 0;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.editor-pane-body .editor-textarea-wrap {
  flex: 1;
  min-width: 0;
}

.editor-textarea-wrap {
  padding: 12px;
  min-height: 0;
}

.editor-textarea {
  width: 100%;
  height: 100%;
  min-height: 200px;
  background: #2b2b2b;
  border: 1px solid #404040;
  color: #e8e8e8;
  padding: 10px 12px;
  font-size: 13px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  line-height: 1.5;
  resize: none;
  border-radius: 2px;
  box-sizing: border-box;
}

.editor-textarea:focus {
  outline: none;
  border-color: #0d7acc;
  box-shadow: 0 0 0 1px #0d7acc;
}

.editor-textarea::placeholder {
  color: #707070;
}

.preview-content-wrap {
  flex: 1;
  overflow: auto;
  padding: 12px 16px;
  min-height: 0;
}

.preview-content {
  font-size: 13px;
  line-height: 1.6;
  color: #e0e0e0;
}

.preview-content h1, .preview-content h2, .preview-content h3,
.preview-content h4, .preview-content h5, .preview-content h6 {
  color: #e8e8e8;
  margin-top: 1em;
  margin-bottom: 0.5em;
  font-weight: 600;
}

.preview-content h1 { font-size: 1.6em; }
.preview-content h2 { font-size: 1.35em; }
.preview-content h3 { font-size: 1.15em; }

.preview-content p {
  margin: 0 0 0.75em;
}

.preview-content ul, .preview-content ol {
  margin: 0 0 0.75em;
  padding-left: 1.5em;
}

.preview-content code {
  background: #404040;
  color: #b8e0f0;
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 0.9em;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
}

.preview-content pre {
  background: #2b2b2b;
  border: 1px solid #404040;
  padding: 10px 12px;
  border-radius: 2px;
  overflow-x: auto;
  margin: 0 0 0.75em;
}

.preview-content pre code {
  background: none;
  padding: 0;
  color: #e0e0e0;
}

.preview-content blockquote {
  border-left: 3px solid #0d7acc;
  margin: 0 0 0.75em;
  padding-left: 12px;
  color: #b0b0b0;
}

.preview-content a {
  color: #0d7acc;
  text-decoration: none;
}

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

.preview-content del {
  text-decoration: line-through;
  color: #a0a0a0;
}

.preview-content hr {
  border: none;
  border-top: 1px solid #404040;
  margin: 1em 0;
}

/* Preview always light (print-friendly) */
body.preview-light .preview-content-wrap {
  background: #f5f5f5;
}

body.preview-light .preview-content {
  color: #222;
}

body.preview-light .preview-content h1,
body.preview-light .preview-content h2,
body.preview-light .preview-content h3,
body.preview-light .preview-content h4,
body.preview-light .preview-content h5,
body.preview-light .preview-content h6 {
  color: #111;
}

body.preview-light .preview-content code {
  background: #e8e8e8;
  color: #333;
}

body.preview-light .preview-content pre {
  background: #e0e0e0;
  border-color: #ccc;
}

body.preview-light .preview-content pre code {
  color: #222;
}

body.preview-light .preview-content blockquote {
  border-left-color: #0d7acc;
  color: #444;
}

body.preview-light .preview-content a {
  color: #0d7acc;
}

body.preview-light .preview-content th,
body.preview-light .preview-content td {
  border-color: #ccc;
}

body.preview-light .preview-content th {
  background: #e8e8e8;
  color: #222;
}

body.preview-light .preview-empty {
  color: #888;
}

.preview-content table {
  border-collapse: collapse;
  width: 100%;
  margin-bottom: 0.75em;
}

.preview-content th, .preview-content td {
  border: 1px solid #404040;
  padding: 6px 10px;
  text-align: left;
}

.preview-content th {
  background: #323232;
  color: #e0e0e0;
  font-weight: 600;
}

.preview-empty {
  color: #707070;
  font-style: italic;
}

/* Single-pane mode (when only editor or only preview visible) */
.editor-split.editor-only .preview-pane {
  display: none;
}

.editor-split.preview-only .editor-pane {
  display: none;
}

.editor-split.preview-only .preview-pane {
  border-left: none;
}

/* Split mode: ensure both panes have minimum width so they stay usable */
.editor-split:not(.editor-only):not(.preview-only) .editor-pane {
  min-width: 200px;
}

.editor-split:not(.editor-only):not(.preview-only) .preview-pane {
  min-width: 200px;
}

/* ----- Right panel: Outline ----- */
.layers-panel {
  width: var(--layers-panel-width, 220px);
  min-width: 180px;
  max-width: 420px;
  flex-shrink: 0;
  background: #2b2b2b;
  border-left: 1px solid #1a1a1a;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.layers-panel .panel-header {
  flex-shrink: 0;
}

.outline-list {
  list-style: none;
  padding: 8px 10px 12px;
  margin: 0;
  font-size: 11px;
  color: #b8b8b8;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.outline-list li {
  padding: 4px 8px 4px 12px;
  cursor: pointer;
  border-radius: 2px;
  margin-bottom: 2px;
  border-left: 2px solid transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.outline-list li:hover {
  background: #323232;
  color: #e0e0e0;
}

.outline-list li.outline-h1 { padding-left: 12px; font-weight: 600; color: #e0e0e0; }
.outline-list li.outline-h2 { padding-left: 20px; }
.outline-list li.outline-h3 { padding-left: 28px; color: #a0a0a0; }

.outline-list li.current {
  background: #2a4a6a;
  border-left-color: #0d7acc;
  color: #fff;
}

.outline-list li.current:hover {
  background: #2a4a6a;
  color: #fff;
}

.outline-empty {
  padding: 12px;
  font-size: 11px;
  color: #707070;
}

.editor-status {
  padding: 8px 12px;
  font-size: 10px;
  color: #707070;
  border-top: 1px solid #1f1f1f;
  flex-shrink: 0;
  margin-top: auto;
}

.editor-status.draft-saved {
  color: #0d7acc;
}

.editor-status-goal-wrap {
  height: 4px;
  background: #2b2b2b;
  border-radius: 2px;
  overflow: hidden;
}

.editor-status-goal-wrap.hidden {
  display: none;
}

.editor-status-goal-bar {
  height: 100%;
  min-width: 0;
  max-width: 100%;
  background: #0d7acc;
  border-radius: 2px;
  transition: width 0.2s ease;
}

/* ----- Custom scrollbars ----- */
.controls,
.preview-content-wrap,
.outline-list,
.editor-textarea {
  scrollbar-width: thin;
  scrollbar-color: #505050 #2b2b2b;
}

.controls::-webkit-scrollbar,
.preview-content-wrap::-webkit-scrollbar,
.outline-list::-webkit-scrollbar,
.editor-textarea::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.controls::-webkit-scrollbar-track,
.preview-content-wrap::-webkit-scrollbar-track,
.outline-list::-webkit-scrollbar-track,
.editor-textarea::-webkit-scrollbar-track {
  background: #2b2b2b;
}

.controls::-webkit-scrollbar-thumb,
.preview-content-wrap::-webkit-scrollbar-thumb,
.outline-list::-webkit-scrollbar-thumb,
.editor-textarea::-webkit-scrollbar-thumb {
  background: #505050;
  border-radius: 5px;
  border: 2px solid #2b2b2b;
}

.controls::-webkit-scrollbar-thumb:hover,
.preview-content-wrap::-webkit-scrollbar-thumb:hover,
.outline-list::-webkit-scrollbar-thumb:hover,
.editor-textarea::-webkit-scrollbar-thumb:hover {
  background: #606060;
}

.controls::-webkit-scrollbar-thumb:active,
.preview-content-wrap::-webkit-scrollbar-thumb:active,
.outline-list::-webkit-scrollbar-thumb:active,
.editor-textarea::-webkit-scrollbar-thumb:active {
  background: #0d7acc;
}

/* ----- Find widget (inside editor pane flow, below Markdown header) ----- */
.find-widget {
  background: #252525;
  border-bottom: 1px solid #404040;
  padding: 6px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
}

.find-widget.hidden {
  display: none !important;
}

.find-widget-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.find-widget-row-main {
  gap: 12px;
}

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

.find-widget-actions-end {
  margin-left: auto;
}

.find-widget-row-replace.hidden {
  display: none !important;
}

.find-widget-input {
  flex: 1;
  min-width: 120px;
  max-width: 280px;
  padding: 4px 8px;
  font-size: 12px;
  background: #2b2b2b;
  border: 1px solid #404040;
  color: #e0e0e0;
  border-radius: 2px;
}

.find-widget-input:focus {
  outline: none;
  border-color: #0d7acc;
}

.find-widget-input::placeholder {
  color: #707070;
}

.find-widget-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  font-size: 11px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 2px;
  color: #b0b0b0;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}

.find-widget-btn:hover {
  background: #3a3a3a;
  color: #e0e0e0;
}

.find-widget-btn-icon {
  font-size: 12px;
  line-height: 1;
}

.find-widget-btn-text {
  font-size: 11px;
}

.find-widget-close .find-widget-close-icon {
  font-size: 18px;
  color: #e0e0e0;
}

.find-widget-close:hover .find-widget-close-icon {
  color: #fff;
}

.find-widget-toggle .find-widget-btn-icon {
  font-size: 10px;
}

.find-widget-toggle.find-widget-toggle-open {
  background: #3a3a3a;
  color: #e0e0e0;
}

.find-widget-btn-action {
  font-size: 11px;
}

.find-count {
  font-size: 11px;
  color: #707070;
  min-width: 48px;
}

/* ----- Format toolbar (vertical, left of editor) ----- */
.format-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
}

.fmt-btn {
  min-width: 32px;
  padding: 4px 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.fmt-icon {
  font-size: 18px;
  color: inherit;
}

/* ----- Restore draft banner ----- */
.restore-draft-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  background: #2a4a6a;
  border-bottom: 1px solid #1a3a5a;
  flex-shrink: 0;
  font-size: 11px;
  color: #e0e0e0;
}

.restore-draft-banner.hidden {
  display: none !important;
  min-height: 0;
  padding: 0;
  overflow: hidden;
}

/* ----- Status row & shortcut hints ----- */
.editor-status-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 12px;
  border-top: 1px solid #1f1f1f;
  flex-shrink: 0;
  margin-top: auto;
}

.btn-back-to-top {
  margin: 8px 12px 12px;
  display: block;
  width: calc(100% - 24px);
}

.btn-back-to-top.hidden {
  display: none !important;
}

.settings-input-num {
  width: 56px;
  padding: 4px 6px;
  font-size: 11px;
}

.settings-link {
  display: inline-block;
  padding: 6px 10px;
  color: #0d7acc;
  text-decoration: none;
  font-size: 11px;
  border-radius: 4px;
  transition: background 0.12s ease, color 0.12s ease;
}

.settings-link:hover {
  background: rgba(13, 122, 204, 0.12);
  color: #3d9ae8;
}

/* ----- Focus mode (hide side panels) ----- */
body.focus-mode .controls,
body.focus-mode .layers-panel,
body.focus-mode .panel-resizer {
  display: none !important;
}

body.focus-mode .editor-wrapper {
  flex: 1;
}

/* ----- Zen mode (editor only: hide panels, toolbar, headers; Esc to exit) ----- */
body.zen-mode .controls,
body.zen-mode .layers-panel,
body.zen-mode .panel-resizer {
  display: none !important;
}

body.zen-mode .editor-toolbar,
body.zen-mode .pane-header {
  display: none !important;
}

body.zen-mode .editor-wrapper {
  flex: 1;
}

/* ----- Responsive: tablet and small desktop (768px) ----- */
@media (max-width: 768px) {
  .panel-resizer {
    display: none !important;
  }

  .editor-toolbar-mobile {
    display: flex;
  }

  .editor-toolbar-outline {
    display: flex;
  }

  .editor-toolbar {
    padding: 0 8px 0 10px;
    gap: 8px;
  }

  /* Small screens: no split mode – only Edit or Preview */
  #btnSplit {
    display: none !important;
  }

  /* Format bar: horizontal strip above editor on small screens (avoids narrow vertical strip in split) */
  .editor-pane-body {
    flex-direction: column;
  }

  .editor-format-bar {
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: flex-start;
    align-items: stretch;
    min-height: 0;
    width: 0;
    padding: 0;
    border-right: none;
    border-bottom: none;
    overflow: hidden;
    flex-shrink: 0;
  }

  .editor-format-bar:not(.visible) {
    min-height: 0;
    max-height: 0;
    border-bottom: none;
  }

  .editor-format-bar.visible {
    width: 100%;
    min-height: 40px;
    max-height: none;
    padding: 0;
    border-bottom: 1px solid #1a1a1a;
    overflow: hidden;
  }

  .editor-format-bar-arrow {
    display: none;
  }

  .editor-format-bar.format-bar-has-overflow .editor-format-bar-arrow {
    display: flex;
  }

  .editor-format-bar-track {
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scroll-behavior: smooth;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0 4px;
  }

  .editor-format-bar .format-toolbar {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 4px;
    flex-shrink: 0;
  }

  .editor-format-bar .format-toolbar-find {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    margin-left: 8px;
    padding-left: 8px;
    border-left: 1px solid #3d3d3d;
    flex-shrink: 0;
  }

  .controls {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    max-width: 85vw;
    z-index: 1002;
    transform: translateX(-100%);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: none;
    min-width: 0;
  }

  body.panel-file-open .controls {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
  }

  .layers-panel {
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    max-width: 85vw;
    z-index: 1002;
    transform: translateX(100%);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: none;
    min-width: 0;
    max-width: 85vw;
  }

  body.panel-outline-open .layers-panel {
    transform: translateX(0);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.4);
  }

  .panel-close-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    margin-left: auto;
    margin-right: -12px;
    padding-left: 12px;
    padding-right: 12px;
  }

  body.panel-file-open .panel-backdrop.hidden,
  body.panel-outline-open .panel-backdrop.hidden {
    display: block !important;
  }

  .welcome-modal-content,
  .pdf-preview-modal-content {
    width: calc(100% - 32px);
    max-width: none;
    margin: 16px;
    max-height: calc(100vh - 32px);
    overflow: auto;
  }

  .pdf-preview-modal {
    padding: 16px;
    align-items: flex-start;
  }

}

/* ----- Responsive: phone (480px) ----- */
@media (max-width: 480px) {
  .view-mode-btn .view-mode-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .view-mode-btn {
    padding: 0 12px;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
  }

  .editor-toolbar-btn {
    min-width: 44px;
    min-height: 44px;
  }

  .editor-textarea-wrap {
    padding: 8px;
  }

  .find-widget {
    padding: 8px;
  }

  .find-widget-row {
    flex-wrap: wrap;
  }

  .find-widget-input {
    min-width: 0;
    max-width: none;
    flex: 1 1 100%;
  }

  .find-widget-actions {
    flex-wrap: wrap;
  }

  .welcome-modal-content,
  .pdf-preview-modal-content {
    width: calc(100% - 24px);
    margin: 12px;
    max-height: calc(100vh - 24px);
  }

  .welcome-modal-header,
  .welcome-modal-text,
  .welcome-modal-btn {
    padding-left: 16px;
    padding-right: 16px;
  }

  .welcome-modal-btn {
    width: calc(100% - 32px);
    margin-left: 16px;
  }

  .pdf-preview-modal {
    padding: 12px;
  }
}

/* ----- Safe area (notches, home indicator) ----- */
@supports (padding: env(safe-area-inset-bottom)) {
  .controls {
    padding-left: env(safe-area-inset-left);
  }

  .layers-panel {
    padding-right: env(safe-area-inset-right);
  }

  @media (max-width: 768px) {
    .controls {
      padding-left: env(safe-area-inset-left);
    }

    .layers-panel {
      padding-right: env(safe-area-inset-right);
    }
  }
}

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

/* ----- Better focus styles ----- */
.btn-panel:focus-visible,
.view-mode-btn:focus-visible,
.settings-toggle-btn:focus-visible {
  outline: 2px solid #0d7acc;
  outline-offset: 2px;
}

.input-text:focus-visible,
.input-num:focus-visible,
.editor-textarea:focus-visible,
.outline-dropdown:focus-visible {
  outline: 2px solid #0d7acc;
  outline-offset: 1px;
}

.outline-list li:focus-visible {
  outline: 2px solid #0d7acc;
  outline-offset: 1px;
}