/* MarkMirror Mobile - CSS Styles */

/* CSS Variables for theming */
:root {
  /* Light theme colors */
  --bg-primary: #fbfdff;
  --bg-secondary: #f2f6fb;
  --bg-tertiary: #e6eef8;
  --text-primary: #182334;
  --text-secondary: #53657c;
  --text-muted: #72839a;
  --border-color: #ccd9e8;
  --border-light: #dce6f1;
  --accent-color: #367fc9;
  --accent-hover: #2566aa;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;

  /* Editor colors */
  --editor-bg: #f9fbfe;
  --editor-text: #1f2d40;
  --editor-selection: #b3d4fc;
  --editor-cursor: #000000;

  /* Shadows */
  --shadow-sm: 0 2px 5px rgba(38, 71, 108, 0.08), 0 1px 2px rgba(38, 71, 108, 0.06);
  --shadow: 0 12px 30px rgba(38, 71, 108, 0.12), 0 3px 10px rgba(38, 71, 108, 0.08);
  --shadow-lg: 0 24px 56px rgba(38, 71, 108, 0.18), 0 8px 22px rgba(38, 71, 108, 0.1);
  --surface-glass: rgba(251, 253, 255, 0.86);
  --surface-raised: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(238, 245, 252, 0.92));
  --surface-header: linear-gradient(105deg, rgba(255, 255, 255, 0.96), rgba(231, 242, 253, 0.93) 56%, rgba(251, 239, 230, 0.9));
  --surface-panel-header: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(235, 242, 250, 0.96));
  --app-background:
    radial-gradient(circle at 8% 4%, rgba(92, 172, 239, 0.22), transparent 29%), radial-gradient(circle at 92% 8%, rgba(255, 181, 126, 0.2), transparent 27%),
    #eaf1f8;
  --inset-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.88);
  --focus-ring: rgba(54, 127, 201, 0.28);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 3rem;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --line-height: 1.5;

  /* Layout */
  --header-height: 60px;
  --panel-header-height: 40px;
  --border-radius: 0.65rem;
  --border-radius-sm: 0.45rem;
  --border-radius-lg: 0.9rem;
}

/* Dark theme */
[data-theme='dark'] {
  --bg-primary: #111722;
  --bg-secondary: #171f2c;
  --bg-tertiary: #222d3c;
  --text-primary: #edf4ff;
  --text-secondary: #b7c5d8;
  --text-muted: #8b9bb0;
  --border-color: #344257;
  --border-light: #2a3648;
  --accent-color: #90caf9;
  --accent-hover: #b1dcff;

  --editor-bg: #101722;
  --editor-text: #dbe7f5;
  --editor-selection: #264f78;
  --editor-cursor: #ffffff;

  --shadow-sm: 0 3px 8px rgba(0, 0, 0, 0.32), 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow: 0 15px 34px rgba(0, 0, 0, 0.42), 0 4px 12px rgba(0, 0, 0, 0.34);
  --shadow-lg: 0 28px 70px rgba(0, 0, 0, 0.56), 0 9px 28px rgba(0, 0, 0, 0.38);
  --surface-glass: rgba(17, 23, 34, 0.86);
  --surface-raised: linear-gradient(145deg, rgba(30, 40, 55, 0.98), rgba(14, 20, 30, 0.96));
  --surface-header: linear-gradient(105deg, rgba(24, 34, 49, 0.98), rgba(18, 27, 40, 0.96) 58%, rgba(37, 25, 49, 0.94));
  --surface-panel-header: linear-gradient(180deg, rgba(31, 41, 56, 0.98), rgba(21, 29, 42, 0.98));
  --app-background:
    radial-gradient(circle at 8% 2%, rgba(42, 116, 173, 0.28), transparent 31%), radial-gradient(circle at 94% 8%, rgba(120, 73, 156, 0.22), transparent 29%),
    #080d15;
  --inset-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --focus-ring: rgba(144, 202, 249, 0.3);
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  color-scheme: light;
}

[data-theme='dark'] {
  color-scheme: dark;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text-primary);
  background: var(--app-background);
  overflow: hidden;
  transition:
    color 0.25s ease,
    background 0.35s ease;
}

/* App container */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  position: relative;
  isolation: isolate;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
  padding: 0 var(--spacing-md);
  background: var(--surface-header);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow), var(--inset-highlight);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.app-title-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.app-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: drop-shadow(0 4px 7px rgba(38, 95, 150, 0.2));
}

.app-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.02em;
}

.file-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.header-right .controls {
  display: flex;
  gap: var(--spacing-sm);
}

.utility-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.language-menu {
  position: relative;
}
.language-trigger {
  min-width: 62px;
  min-height: 40px;
  gap: 0.35rem;
  border-color: var(--border-color);
  background: var(--surface-raised);
  box-shadow: var(--shadow-sm), var(--inset-highlight);
}
.language-chevron {
  color: var(--text-secondary);
  transform: rotate(180deg);
  transition:
    transform 240ms cubic-bezier(0.34, 1.56, 0.64, 1),
    color 180ms ease;
}
.language-trigger[aria-expanded='true'] .language-chevron {
  color: var(--accent-color);
  transform: rotate(0deg);
}
.language-options {
  position: absolute;
  z-index: 120;
  top: calc(100% + 0.45rem);
  right: 0;
  min-width: 174px;
  padding: 0.4rem;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--bg-secondary);
  box-shadow: var(--shadow-lg);
}
.language-options[hidden] {
  display: none;
}
.language-options button {
  width: 100%;
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--text-primary);
  font: inherit;
  cursor: pointer;
}
.language-options button:hover,
.language-options button:focus-visible,
.language-options button[aria-selected='true'] {
  border-color: color-mix(in srgb, var(--accent-color) 35%, transparent);
  background: color-mix(in srgb, var(--accent-color) 12%, transparent);
}
.language-options button span:last-child {
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 700;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    border-color 0.18s ease,
    background 0.18s ease;
  background: transparent;
  color: var(--text-primary);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow), var(--inset-highlight);
  border-color: var(--accent-color);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--surface-raised);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm), var(--inset-highlight);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background-color: #c82333;
}

.btn-icon {
  padding: var(--spacing-sm);
  font-size: var(--font-size-lg);
  border-radius: 50%;
  width: 40px;
  height: 40px;
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

/* Settings Panel */
.settings-panel {
  position: absolute;
  top: var(--header-height);
  right: 0;
  width: 300px;
  background: var(--surface-glass);
  border: 1px solid var(--border-color);
  border-radius: 0 0 0 var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
}

.settings-panel:not(.hidden) {
  transform: translateX(0);
}

.settings-content {
  padding: var(--spacing-lg);
}

.settings-content h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.setting-group {
  margin-bottom: var(--spacing-md);
}

.setting-group label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  color: var(--text-primary);
}

.setting-group input[type='checkbox'] {
  width: 16px;
  height: 16px;
}

.setting-group input[type='range'] {
  flex: 1;
  margin: 0 var(--spacing-sm);
}

/* Search and Replace Panel */
.search-panel {
  position: absolute;
  top: var(--header-height);
  left: 50%;
  transform: translateX(-50%) translateY(-100%);
  width: 500px;
  max-width: 90vw;
  background: var(--surface-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  z-index: 300;
  transition: transform 0.3s ease-in-out;
}

.search-panel:not(.hidden) {
  transform: translateX(-50%) translateY(0);
}

.search-content {
  padding: var(--spacing-lg);
}

.search-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.search-header h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: var(--font-size-lg);
}

.search-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.search-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.search-group label {
  font-weight: 500;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.search-input-container {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
}

.search-field {
  flex: 1;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  font-family: var(--font-family-mono);
  background: var(--surface-raised);
  color: var(--text-primary);
  transition: border-color 0.2s ease;
}

.search-field:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow:
    0 0 0 3px var(--focus-ring),
    var(--shadow-sm);
}

.search-field.regex-error {
  border-color: var(--danger-color);
  background-color: rgba(220, 53, 69, 0.05);
}

.search-field.regex-error:focus {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.25);
}

.search-options {
  display: flex;
  gap: var(--spacing-xs);
}

.btn-option {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-mono);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 32px;
  text-align: center;
}

.btn-option:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-color);
}

.btn-option[data-active='true'] {
  background-color: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
}

.search-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.search-navigation {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.search-results {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  min-width: 80px;
  text-align: center;
}

.search-actions {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.search-status {
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  text-align: center;
}

.search-status.error {
  background-color: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
  border: 1px solid rgba(220, 53, 69, 0.2);
}

.search-status.success {
  background-color: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
  border: 1px solid rgba(40, 167, 69, 0.2);
}

.search-status.info {
  background-color: rgba(0, 123, 255, 0.1);
  color: var(--accent-color);
  border: 1px solid rgba(0, 123, 255, 0.2);
}

/* Confirm mode controls */
.confirm-mode-controls {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background-color: rgba(255, 193, 7, 0.1);
}

.confirm-actions {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.confirm-info {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.confirm-match-info {
  font-family: var(--font-family-mono);
  background-color: var(--bg-tertiary);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  display: inline-block;
}

.btn-success {
  background-color: var(--success-color);
  color: white;
  border: 1px solid var(--success-color);
}

.btn-success:hover {
  background-color: #218838;
  border-color: #1e7e34;
}

.btn-warning {
  background-color: var(--warning-color);
  color: #212529;
  border: 1px solid var(--warning-color);
}

.btn-warning:hover {
  background-color: #e0a800;
  border-color: #d39e00;
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
  border: 1px solid var(--danger-color);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.btn-danger:hover {
  background-color: #c82333;
  border-color: #bd2130;
  transform: translateY(-1px);
}

.btn-danger:active {
  transform: translateY(0);
  background-color: #bd2130;
}

/* Keyboard shortcuts help */
.search-shortcuts {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.search-shortcuts summary {
  cursor: pointer;
  color: var(--text-secondary);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: background-color 0.2s ease;
}

.search-shortcuts summary:hover {
  background-color: var(--bg-tertiary);
}

.shortcuts-list {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xs);
}

.shortcuts-list div {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

kbd {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 2px 6px;
  font-family: var(--font-family-mono);
  font-size: 0.8em;
  color: var(--text-primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* EditorActions Integration */
.editor-actions-bar {
  /* Override default styles to match app theme */
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.action-btn {
  color: var(--text-primary);
  font-family: var(--font-family);
}

.action-btn:hover {
  background: var(--bg-tertiary);
}

.action-btn:focus {
  outline: 2px solid var(--accent-color);
}

.paste-btn:hover {
  background: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
}

.copy-btn:hover {
  background: rgba(0, 123, 255, 0.1);
  color: var(--accent-color);
}

.clear-btn:hover {
  background: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
}

.editor-actions-toast {
  font-family: var(--font-family);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.editor-actions-settings-badge .settings-toggle {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.editor-actions-settings-badge .settings-panel {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-family);
}

.editor-actions-settings-badge .settings-panel label {
  color: var(--text-primary);
}

/* Dark theme overrides for EditorActions */
[data-theme='dark'] .editor-actions-bar {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

[data-theme='dark'] .action-btn {
  color: var(--text-primary);
}

[data-theme='dark'] .action-btn:hover {
  background: var(--bg-tertiary);
}

[data-theme='dark'] .editor-actions-settings-badge .settings-toggle {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

[data-theme='dark'] .editor-actions-settings-badge .settings-panel {
  background: var(--bg-primary);
  border-color: var(--border-color);
}

[data-theme='dark'] .editor-actions-settings-badge .settings-panel label {
  color: var(--text-primary);
}

/* Search highlighting for SimpleEditor */
.simple-editor.search-active {
  background-image: linear-gradient(to right, transparent, rgba(255, 255, 0, 0.1) 1px, transparent 2px);
  background-size: 100% 1.2em;
}

.simple-editor.search-active::selection {
  background-color: rgba(255, 255, 0, 0.5);
}

/* Search highlighting for CodeMirror */
.cm-editor.search-active .cm-selectionBackground {
  background-color: rgba(255, 255, 0, 0.3) !important;
}

.cm-editor.search-active .cm-focused .cm-selectionBackground {
  background-color: rgba(255, 165, 0, 0.5) !important;
}

/* Main content */
.main-content {
  display: flex;
  flex: 1;
  min-height: 0;
  gap: 12px;
  padding: 12px;
  overflow: hidden;
  background: transparent;
}

/* Mobile tabs (hidden on desktop) */
.mobile-tabs {
  display: none;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  flex: 1;
  padding: var(--spacing-md);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  color: var(--accent-color);
  background-color: var(--bg-primary);
  border-bottom: 2px solid var(--accent-color);
}

/* Panels */
.panel {
  display: flex;
  flex-direction: column;
  background: var(--surface-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow), var(--inset-highlight);
  overflow: hidden;
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
}

.editor-panel {
  flex: 1;
  min-width: 0;
}

.preview-panel {
  flex: 1;
  min-width: 0;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--panel-header-height);
  padding: 0 var(--spacing-md);
  background: var(--surface-panel-header);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--inset-highlight);
}

.panel-header h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.panel-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.char-count {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  padding: 0.18rem 0.5rem;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  background: var(--bg-primary);
}

/* Editor */
.editor-container {
  flex: 1;
  overflow: hidden;
  position: relative; /* Enable absolute positioning for floating action bar */
}

/* Editor wrapper takes full space */
.editor-wrapper {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* CodeMirror overrides */
.cm-editor {
  height: 100% !important;
  font-family: var(--font-family-mono) !important;
}

.cm-focused {
  outline: none !important;
}

.cm-scroller {
  font-family: var(--font-family-mono) !important;
  line-height: 1.6 !important;
}

/* Simple editor styles */
.simple-editor {
  width: 100% !important;
  height: 100% !important;
  border: none !important;
  outline: none !important;
  resize: none !important;
  padding: var(--spacing-md) !important;
  font-family: var(--font-family-mono) !important;
  font-size: 14px !important;
  line-height: 1.6 !important;
  background-color: var(--editor-bg) !important;
  color: var(--editor-text) !important;
  caret-color: var(--accent-color) !important;
  tab-size: 4 !important;
  /* Custom scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.simple-editor::-webkit-scrollbar {
  width: 8px;
}

.simple-editor::-webkit-scrollbar-track {
  background: transparent;
}

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

.simple-editor::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

/* Preview content */
.preview-content {
  display: flex;
  flex-direction: column;
  height: calc(100% - var(--panel-header-height));
}

.preview-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--border-color);
  min-height: 200px; /* Ensure minimum height for scrolling */
}

.preview-section:last-child {
  border-bottom: none;
}

.preview-section-header {
  height: 30px;
  padding: 0 var(--spacing-md);
  background: linear-gradient(90deg, var(--bg-tertiary), var(--bg-secondary));
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
}

.preview-section-header h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.preview-output {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height);
  background: color-mix(in srgb, var(--bg-primary) 94%, transparent);
  min-height: 150px; /* Ensure minimum height */
  max-height: calc(50vh - 100px); /* Limit height to enable scrolling */
  /* Ensure scrollbar is visible */
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

/* Custom scrollbar for webkit browsers */
.preview-output::-webkit-scrollbar {
  width: 8px;
}

.preview-output::-webkit-scrollbar-track {
  background: transparent;
}

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

.preview-output::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

/* Plain text preview */
.plain-text-preview .preview-output {
  white-space: pre-wrap;
  word-wrap: break-word;
  color: var(--text-primary);
}

/* HTML preview - Markdown body styles */
.markdown-body {
  font-family: var(--font-family) !important;
  font-size: var(--font-size-base) !important;
  color: var(--text-primary) !important;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

.markdown-body h1 {
  font-size: 2rem;
}
.markdown-body h2 {
  font-size: 1.5rem;
}
.markdown-body h3 {
  font-size: 1.25rem;
}
.markdown-body h4 {
  font-size: 1.125rem;
}
.markdown-body h5 {
  font-size: 1rem;
}
.markdown-body h6 {
  font-size: 0.875rem;
}

.markdown-body p {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.markdown-body ul,
.markdown-body ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.markdown-body li {
  margin-bottom: var(--spacing-xs);
}

.markdown-body blockquote {
  margin: var(--spacing-md) 0;
  padding: 0 var(--spacing-md);
  border-left: 4px solid var(--accent-color);
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  background: color-mix(in srgb, var(--accent-color) 8%, var(--bg-primary));
}

.markdown-body code {
  padding: 0.2em 0.4em;
  background-color: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family-mono);
  font-size: 0.875em;
}

.markdown-body pre {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius);
  overflow-x: auto;
  border: 1px solid var(--border-color);
  box-shadow: var(--inset-highlight), var(--shadow-sm);
}

.markdown-body pre code {
  padding: 0;
  background: none;
  border-radius: 0;
}

.markdown-body table {
  width: 100%;
  margin-bottom: var(--spacing-md);
  border-collapse: collapse;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

.markdown-body th,
.markdown-body td {
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  text-align: left;
}

.markdown-body th {
  background-color: var(--bg-secondary);
  font-weight: 600;
}

.markdown-body a {
  color: var(--accent-color);
  text-decoration: none;
}

.markdown-body a:hover {
  text-decoration: underline;
}

/* Task list styles */
.markdown-body .task-list-item {
  list-style: none;
  margin-left: -1.5rem;
}

.markdown-body .task-list-item input[type='checkbox'] {
  margin-right: var(--spacing-sm);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--surface-raised);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 800px;
  max-height: 80%;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  margin: 0;
  color: var(--text-primary);
}

.modal-body {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
}

/* Loading indicator */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  color: var(--text-primary);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Analytics Panel */
.analytics-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.analytics-panel:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.analytics-content {
  background: var(--surface-raised);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 95%;
  max-width: 1200px;
  max-height: 90%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.analytics-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

.analytics-header h3 {
  margin: 0;
  color: var(--text-primary);
}

.analytics-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.analytics-body {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
}

.analytics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.analytics-card {
  background: var(--surface-raised);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm), var(--inset-highlight);
}

.analytics-card.full-width {
  grid-column: 1 / -1;
}

.analytics-card h4 {
  margin: 0 0 var(--spacing-md) 0;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
}

.stats-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs) 0;
}

.stat-label {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.stat-value {
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-family-mono);
}

.function-item,
.markdown-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) 0;
}

.function-info,
.markdown-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.function-name,
.markdown-name {
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.function-count,
.markdown-count {
  color: var(--text-secondary);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

.function-bar {
  height: 4px;
  background-color: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
}

.function-progress {
  height: 100%;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}

.markdown-percentage {
  color: var(--accent-color);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.activity-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  max-height: 200px;
  overflow-y: auto;
}

.activity-event {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
}

.event-time {
  color: var(--text-muted);
  font-family: var(--font-family-mono);
}

.event-type {
  color: var(--text-primary);
}

.no-data {
  color: var(--text-muted);
  font-style: italic;
  text-align: center;
  padding: var(--spacing-lg);
}

.chart-container {
  min-height: 150px;
}

/* PWA Styles */
.pwa-install-btn {
  background: linear-gradient(135deg, var(--accent-color), #0056b3);
  color: white;
  border: none;
  animation: pulse 2s infinite;
}

.pwa-install-btn:hover {
  background: linear-gradient(135deg, #0056b3, var(--accent-color));
  transform: translateY(-1px);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 123, 255, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(0, 123, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 123, 255, 0);
  }
}

.pwa-indicator {
  margin-left: var(--spacing-sm);
  font-size: 0.8em;
  opacity: 0.8;
}

.pwa-update-notification {
  position: fixed;
  top: var(--header-height);
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-color);
  color: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-100%);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.update-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  white-space: nowrap;
}

.update-content .btn {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.update-content .btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.update-content .btn-secondary {
  background: transparent;
}

/* PWA specific responsive adjustments */
@media (display-mode: standalone) {
  .header {
    padding-top: env(safe-area-inset-top, 0);
  }

  .main-content {
    padding-bottom: env(safe-area-inset-bottom, 0);
  }

  /* Hide install button when in standalone mode */
  .pwa-install-btn {
    display: none !important;
  }
}

/* iOS specific adjustments */
@supports (-webkit-touch-callout: none) {
  @media (display-mode: standalone) {
    .header {
      padding-top: max(env(safe-area-inset-top), 20px);
    }
  }
}

/* Utility classes */
.hidden {
  display: none !important;
}

.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;
}

/* Responsive design */
@media (max-width: 768px) {
  .header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: 'title tools' 'files utilities';
    height: auto;
    min-height: var(--header-height);
    padding: var(--spacing-sm);
  }

  .header-left {
    display: contents;
  }
  .app-title {
    grid-area: title;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .header-right {
    grid-area: tools;
    min-width: 0;
  }
  .utility-controls {
    grid-area: utilities;
    justify-content: flex-end;
  }

  .file-controls {
    grid-area: files;
    max-width: 100%;
    overflow-x: auto;
    gap: var(--spacing-xs);
    padding-bottom: 0.15rem;
  }

  .header-right .controls {
    gap: var(--spacing-xs);
  }

  .btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
  }

  .mobile-tabs {
    display: flex;
  }

  .main-content {
    flex-direction: column;
  }

  .panel {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .preview-panel {
    display: none;
  }

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

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

  .editor-panel:not(.active) {
    display: none;
  }

  .settings-panel {
    width: 100%;
    right: 0;
    left: 0;
  }

  .search-panel {
    width: 95%;
    max-width: none;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
  }

  .search-panel:not(.hidden) {
    transform: translateX(-50%) translateY(0);
  }

  .search-controls {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-sm);
  }

  .search-navigation {
    justify-content: center;
  }

  .search-actions {
    justify-content: center;
  }

  .modal-content {
    width: 95%;
    margin: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .app-title {
    font-size: var(--font-size-md);
  }
  .header-right .btn-icon {
    width: 36px;
    min-width: 36px;
    padding-inline: 0;
  }
  .language-trigger {
    min-width: 52px;
    padding-inline: 0.4rem;
  }
  .header-right .controls {
    gap: 2px;
  }
  .header {
    grid-template-areas: 'title tools' 'files files' 'utilities utilities';
  }
  .utility-controls {
    max-width: 100%;
    overflow-x: auto;
    justify-content: flex-end;
    gap: var(--spacing-xs);
  }
  .utility-controls .btn-icon {
    width: 40px;
    min-width: 40px;
    padding-inline: 0;
  }
}

@media (max-width: 480px) {
  .app-logo {
    width: 24px;
    height: 24px;
  }

  .app-title {
    font-size: var(--font-size-base);
  }

  .file-controls {
    width: 100%;
    margin-top: var(--spacing-sm);
  }

  .btn {
    flex: 1;
    min-width: 0;
  }
}

/* Local theme finishing layer: dependency-free and motion-aware. */
html {
  background: var(--app-background);
  scrollbar-gutter: stable;
}

body {
  min-height: 100vh;
  accent-color: var(--accent-color);
}

::selection {
  background: var(--focus-ring);
  color: var(--text-primary);
}

:where(a, button, input, textarea, select, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--accent-color) var(--bg-secondary);
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-track,
*::-webkit-scrollbar-corner {
  background: var(--bg-secondary);
}

*::-webkit-scrollbar-thumb {
  min-width: 36px;
  min-height: 36px;
  border: 2px solid var(--bg-secondary);
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent-color), #ba8fca);
  background-clip: padding-box;
}

*::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--accent-hover), #cf9ddd);
  background-clip: padding-box;
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10000;
  transform: translateY(-180%);
  padding: 0.7rem 1rem;
  border: 1px solid var(--accent-color);
  border-radius: 10px;
  background: var(--surface-raised);
  color: var(--text-primary);
  box-shadow: var(--shadow);
}

.skip-link:focus {
  transform: translateY(0);
}

@media (max-width: 768px) {
  .main-content {
    gap: 8px;
    padding: 8px;
  }

  .panel {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
  }
}