/* CSS Variables & Theme Definitions */
:root {
  /* Spacing Grid (8px base) */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;

  /* Font Families */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'Fira Code', 'Roboto Mono', 'Courier New', Courier, monospace;

  /* Default Theme: Dark Space */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121e;
  --bg-tertiary: #191929;
  --bg-glass: rgba(18, 18, 30, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --accent-color: #3b82f6; /* Electric Blue */
  --accent-rgb: 59, 130, 246;
  --accent-hover: #60a5fa;
  --glow-color: rgba(59, 130, 246, 0.35);
  --scrollbar-thumb: #2d2d44;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --panel-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --border-radius: 12px;
}

[data-theme="light"] {
  --bg-primary: #f5f6fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f0f2f5;
  --bg-glass: rgba(255, 255, 255, 0.8);
  --border-color: rgba(0, 0, 0, 0.08);
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --accent-color: #0d9488; /* Teal */
  --accent-rgb: 13, 148, 136;
  --accent-hover: #14b8a6;
  --glow-color: rgba(13, 148, 136, 0.15);
  --scrollbar-thumb: #d1d5db;
  --danger-color: #dc2626;
  --success-color: #059669;
  --panel-shadow: 0 8px 32px 0 rgba(31, 41, 55, 0.08);
}

[data-theme="cyberpunk"] {
  --bg-primary: #1a002c;
  --bg-secondary: #0d0015;
  --bg-tertiary: #2e004f;
  --bg-glass: rgba(13, 0, 21, 0.75);
  --border-color: #ff007f;
  --text-primary: #00ffff; /* Cyber Cyan */
  --text-secondary: #e2a0ff;
  --accent-color: #ff007f; /* Neon Pink */
  --accent-rgb: 255, 0, 127;
  --accent-hover: #ff47a4;
  --glow-color: rgba(255, 0, 127, 0.5);
  --scrollbar-thumb: #2e004f;
  --danger-color: #ff3333;
  --success-color: #39ff14; /* Neon Green */
  --panel-shadow: 0 0 20px rgba(255, 0, 127, 0.2);
}

[data-theme="forest"] {
  --bg-primary: #0f1c15;
  --bg-secondary: #172a20;
  --bg-tertiary: #1f372a;
  --bg-glass: rgba(23, 42, 32, 0.7);
  --border-color: rgba(16, 185, 129, 0.15);
  --text-primary: #ecfdf5;
  --text-secondary: #a7f3d0;
  --accent-color: #10b981; /* Emerald */
  --accent-rgb: 16, 185, 129;
  --accent-hover: #34d399;
  --glow-color: rgba(16, 185, 129, 0.2);
  --scrollbar-thumb: #274737;
  --danger-color: #f87171;
  --success-color: #059669;
  --panel-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.25);
}

/* Global Reset & Box Model */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* App Wrapper & Layout Grid */
#app-container {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  width: 100%;
  height: 100%;
}

/* Glassmorphism utility */
.glass-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  box-shadow: var(--panel-shadow);
}

/* HEADER SECTION */
header {
  grid-row: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  border-bottom: 1px solid var(--border-color);
  z-index: 10;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  box-shadow: 0 0 10px var(--glow-color);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
}

.filename-container {
  display: flex;
  align-items: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 4px var(--space-1);
  margin-left: var(--space-1);
}

.filename-input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9rem;
  width: 140px;
  outline: none;
}

.filename-input:focus {
  outline: none;
}

.filename-ext {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding-left: 2px;
  user-select: none;
}

/* TAB NAV SWITCHER */
nav.tab-nav {
  grid-row: 2;
  display: flex;
  justify-content: center;
  padding: var(--space-1) 0;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.tab-switcher {
  display: flex;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  padding: var(--space-1) var(--space-3);
  border-radius: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
}

.tab-btn i {
  font-size: 1.1rem;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--accent-color);
  color: #ffffff;
  box-shadow: 0 4px 12px var(--glow-color);
}

/* MAIN WORKSPACE */
main {
  grid-row: 3;
  display: grid;
  grid-template-columns: 1fr auto;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.editor-workspace {
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

/* Text Editor Layout */
/* Scoped Editor Themes */
.text-editor-container[data-editor-theme="light"] {
  --editor-bg: #ffffff;
  --editor-text: #1f2937;
  --editor-gutter-bg: #f3f4f6;
  --editor-gutter-border: rgba(0, 0, 0, 0.08);
  --editor-gutter-text: #6b7280;
  --editor-caret: #0d9488;
}

.text-editor-container[data-editor-theme="dark"] {
  --editor-bg: #0a0a0f;
  --editor-text: #f3f4f6;
  --editor-gutter-bg: #12121e;
  --editor-gutter-border: rgba(255, 255, 255, 0.08);
  --editor-gutter-text: #9ca3af;
  --editor-caret: #3b82f6;
}

.text-editor-container[data-editor-theme="cyberpunk"] {
  --editor-bg: #0d0015;
  --editor-text: #00ffff;
  --editor-gutter-bg: #1a002c;
  --editor-gutter-border: #ff007f;
  --editor-gutter-text: #e2a0ff;
  --editor-caret: #ff007f;
}

.text-editor-container[data-editor-theme="forest"] {
  --editor-bg: #0f1c15;
  --editor-text: #ecfdf5;
  --editor-gutter-bg: #172a20;
  --editor-gutter-border: rgba(16, 185, 129, 0.15);
  --editor-gutter-text: #a7f3d0;
  --editor-caret: #10b981;
}

.text-editor-container {
  display: flex;
  flex: 1;
  position: relative;
  overflow: hidden;
  font-size: 16px;
  line-height: 1.5;
  background-color: var(--editor-bg, var(--bg-secondary));
  color: var(--editor-text, var(--text-primary));
}

.line-numbers {
  width: 55px;
  padding: var(--space-2) 0;
  text-align: right;
  padding-right: var(--space-1);
  color: var(--editor-gutter-text, var(--text-secondary));
  font-family: var(--font-mono);
  background: var(--editor-gutter-bg, var(--bg-secondary));
  border-right: 1px solid var(--editor-gutter-border, var(--border-color));
  user-select: none;
  overflow: hidden;
  white-space: pre;
  line-height: inherit;
}

.textarea-wrapper {
  position: relative;
  flex: 1;
  height: 100%;
  overflow: hidden;
}

.editor-textarea {
  width: 100%;
  height: 100%;
  resize: none;
  border: none;
  background: var(--editor-bg, transparent);
  color: var(--editor-text, var(--text-primary));
  caret-color: var(--editor-caret, var(--accent-color));
  font-family: var(--font-mono);
  font-size: inherit;
  line-height: inherit;
  padding: var(--space-2);
  outline: none;
  white-space: pre;
  overflow-y: auto;
  overflow-x: auto;
}

/* Utility to toggle wrap */
.editor-textarea.wrap-text {
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Find and Replace bar */
.find-replace-bar {
  display: flex;
  gap: var(--space-1);
  padding: 8px var(--space-2);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  flex-wrap: wrap;
}

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

.find-input-group {
  display: flex;
  align-items: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2px 8px;
  flex: 1;
  min-width: 150px;
}

.find-input-group input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  outline: none;
  padding: 4px;
  width: 100%;
  font-size: 0.85rem;
}

.find-actions {
  display: flex;
  gap: var(--space-1);
}

/* SIDEBAR CONTROLS */
aside.sidebar {
  width: 240px;
  border-left: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
}

.sidebar-section {
  padding: var(--space-2);
  border-bottom: 1px solid var(--border-color);
}

.sidebar-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.sidebar-title i {
  color: var(--accent-color);
}

/* Stat Grid */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stat-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-1) var(--space-2);
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.stat-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-2px);
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Image Editor Layout */
.photo-editor-container {
  display: flex;
  flex: 1;
  position: relative;
  overflow: hidden;
  align-items: center;
  justify-content: center;
  background: #050508;
}

.image-canvas-wrapper {
  max-width: 90%;
  max-height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

#image-preview {
  max-width: 100%;
  max-height: 80vh;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  border-radius: 4px;
  object-fit: contain;
  transition: filter 0.1s ease, transform 0.2s ease;
}

.upload-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4);
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease;
  width: 80%;
  max-width: 480px;
}

.upload-dropzone:hover {
  border-color: var(--accent-color);
  background: rgba(var(--accent-rgb), 0.04);
}

.upload-dropzone i {
  font-size: 3rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

/* Form inputs & controls */
.control-group {
  margin-bottom: var(--space-2);
}

.control-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
  font-weight: 500;
}

.control-input {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
}

.control-input:focus {
  border-color: var(--accent-color);
}

/* Custom CSS Range Slider */
input[type="range"].slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-tertiary);
  outline: none;
  margin: 10px 0;
}

input[type="range"].slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-color);
  cursor: pointer;
  box-shadow: 0 0 8px var(--glow-color);
  transition: background 0.15s;
}

input[type="range"].slider::-webkit-slider-thumb:hover {
  background: var(--accent-hover);
}

/* BUTTONS */
.btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 8px 14px;
  border-radius: var(--border-radius);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn:hover {
  background: var(--bg-secondary);
  border-color: var(--text-secondary);
}

.btn-primary {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--danger-color);
}

.btn-danger:hover {
  background: var(--danger-color);
  color: #ffffff;
  border-color: var(--danger-color);
}

.btn-icon-only {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--border-radius);
}

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

.btn-group-full {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

/* ACTIONS BAR */
.actions-bar {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* FOOTER SECTION */
footer {
  grid-row: 4;
  padding: 8px var(--space-2);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
  gap: var(--space-1);
  z-index: 10;
}

.footer-links {
  display: flex;
  gap: var(--space-2);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent-color);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-color);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.toast-success {
  border-left-color: var(--success-color);
}

.toast.toast-error {
  border-left-color: var(--danger-color);
}

/* UTILITY CLASSES */
.hidden {
  display: none !important;
}

/* Animations */
@keyframes slideIn {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Keyboard accessibility outline */
*:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* RESPONSIVE BREAKPOINTS */
@media (max-width: 1024px) {
  main {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
  }

  aside.sidebar {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--border-color);
    height: 250px;
  }
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-1);
  }

  .brand-section {
    justify-content: space-between;
  }

  .actions-bar {
    justify-content: flex-end;
    margin-top: 4px;
  }

  .tab-btn {
    padding: var(--space-1) var(--space-2);
  }

  aside.sidebar {
    height: 220px;
  }
}

@media (max-width: 480px) {
  .actions-bar .btn span {
    display: none;
  }
  
  .actions-bar .btn {
    padding: 8px;
  }
  
  .filename-input {
    width: 80px;
  }
}

/* Reduced Motion Compliance */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-delay: -1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    background-attachment: initial !important;
    scroll-behavior: auto !important;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
  }
}

/* Dialog Backdrop and Modal Styling */
dialog {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  max-width: 600px;
  width: 90%;
  padding: 0;
  margin: auto;
  color: var(--text-primary);
  background: var(--bg-glass);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.dialog-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
}

.dialog-body {
  padding: var(--space-3);
  max-height: 70vh;
  overflow-y: auto;
  line-height: 1.6;
  font-size: 0.95rem;
}

.dialog-body h3 {
  margin-top: var(--space-2);
  margin-bottom: var(--space-1);
  color: var(--accent-color);
  font-size: 1.05rem;
}

.dialog-body p {
  margin-bottom: var(--space-2);
  color: var(--text-secondary);
}

.dialog-body ul, .dialog-body ol {
  margin-left: var(--space-2);
  margin-bottom: var(--space-2);
  color: var(--text-secondary);
}

.dialog-body li {
  margin-bottom: 6px;
}

/* Exclusive Accordion details for FAQ */
.faq-details {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-tertiary);
  margin-bottom: var(--space-1);
  overflow: hidden;
}

.faq-details summary {
  padding: var(--space-1) var(--space-2);
  font-weight: 600;
  cursor: pointer;
  outline: none;
  user-select: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-primary);
  transition: background 0.2s;
}

.faq-details summary:hover {
  background: rgba(var(--accent-rgb), 0.04);
}

.faq-details summary::after {
  content: '➕';
  font-size: 0.8rem;
  transition: transform 0.25s ease;
}

.faq-details[open] summary::after {
  content: '➖';
}

.faq-details p {
  padding: var(--space-2);
  margin-bottom: 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  font-size: 0.9rem;
}

/* Formatting Toolbar Styles */
.formatting-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 6px var(--space-2);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.toolbar-divider {
  width: 1px;
  height: 20px;
  background-color: var(--border-color);
  margin: 0 4px;
}

.tool-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 4px;
  border-radius: var(--border-radius);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.8rem;
  height: 32px;
  min-width: 32px;
  transition: all 0.2s ease;
}

.tool-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.tool-btn.active {
  background: var(--accent-color);
  color: #ffffff;
  box-shadow: 0 0 8px var(--glow-color);
}

.tool-btn span.tool-btn-label {
  margin-left: 4px;
  font-size: 0.8rem;
}

/* Split view and full preview container rules */
.split-preview-wrapper {
  flex: 1;
  height: 100%;
  border-left: 1px solid var(--border-color);
  background: #ffffff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

#split-preview-iframe {
  width: 100%;
  flex: 1;
  border: none;
  background: #ffffff;
}

#full-preview-iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: #ffffff;
}

.full-preview-container {
  width: 100%;
  height: 100%;
  background: #ffffff;
}

/* Welcome Landing View Panel styles */
.welcome-screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
  z-index: 100;
  padding: var(--space-3) 0;
}

.welcome-container {
  max-width: 800px;
  width: 90%;
  padding: var(--space-4) var(--space-3);
  text-align: center;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.welcome-doc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  text-align: left;
  margin-top: 24px;
}

.welcome-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-2);
}

.welcome-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--accent-color);
}

.welcome-card ul {
  padding-left: 16px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
}

.welcome-card li {
  margin-bottom: 8px;
}

/* GDPR Cookie Consent Banner styles */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  gap: var(--space-2);
  animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.cookie-content {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-size: 0.9rem;
  line-height: 1.5;
  flex: 1;
}

.cookie-actions {
  display: flex;
  gap: var(--space-1);
}

/* Shortcuts Dialog Tables and Keyboards Styles */
.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}

.shortcuts-table th, .shortcuts-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.shortcuts-table th {
  font-weight: 700;
  color: var(--text-primary);
}

.shortcuts-table td {
  color: var(--text-secondary);
}

kbd {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-primary);
  box-shadow: 0 2px 0 var(--border-color);
}

/* Monospace Print Margin Overlay */
.print-margin-80 {
  background: linear-gradient(90deg, transparent 80ch, var(--border-color) 80ch, var(--border-color) calc(80ch + 1px), transparent calc(80ch + 1px));
}
.print-margin-100 {
  background: linear-gradient(90deg, transparent 100ch, var(--border-color) 100ch, var(--border-color) calc(100ch + 1px), transparent calc(100ch + 1px));
}

/* Print Layout Optimization */
@media print {
  body * {
    visibility: hidden;
  }
  #editor-text-area, #editor-text-area * {
    visibility: visible;
  }
  #editor-text-area {
    position: absolute;
    left: 0;
    top: 0;
    width: 100% !important;
    height: 100% !important;
    border: none !important;
    background: transparent !important;
    color: #000000 !important;
    font-size: 12pt !important;
    white-space: pre-wrap !important;
  }
  header, nav, aside, footer, .formatting-toolbar, .line-numbers, .find-replace-bar, .toast-container, dialog, .cookie-banner {
    display: none !important;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(100px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 768px) {
  .welcome-doc-grid {
    grid-template-columns: 1fr;
  }
  .cookie-banner {
    flex-direction: column;
    align-items: stretch;
    bottom: 12px;
    left: 12px;
    right: 12px;
    padding: var(--space-2);
  }
  .cookie-actions {
    margin-top: 12px;
    justify-content: flex-end;
  }
}

/* --- GOOGLE AUTH STYLING --- */
.google-auth-widget {
  display: flex;
  align-items: center;
  margin-left: var(--space-1);
}

.btn-google {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.btn-google:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-color);
  box-shadow: 0 0 10px var(--glow-color);
}

.user-profile-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.user-profile-menu:hover {
  border-color: var(--accent-color);
  background: var(--bg-tertiary);
}

.user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--accent-color);
}

.user-name-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- TOOLBAR POPOVERS SYSTEM --- */
.popover-container {
  position: relative;
  display: inline-block;
}

.toolbar-popover {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
  z-index: 100;
  width: 280px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.toolbar-popover:not(.hidden) {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* Align rightmost popovers to the right edge */
.toolbar-group:last-child .toolbar-popover {
  left: auto;
  right: 0;
  transform: translateY(10px);
}
.toolbar-group:last-child .toolbar-popover:not(.hidden) {
  transform: translateY(0);
}

.popover-header {
  padding: 10px 14px;
  font-weight: 700;
  font-size: 0.8rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  color: var(--accent-color);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.popover-divider {
  height: 1px;
  background: var(--border-color);
  margin: 6px 0;
}

.popover-section {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  padding: 6px;
  gap: 4px;
}

.popover-section:last-of-type {
  grid-template-columns: 1fr;
}

.popover-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  font-size: 0.8rem;
  font-family: var(--font-sans);
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.popover-item:hover {
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent-color);
}

.popover-item span.material-symbols-outlined {
  font-size: 1.15rem;
}

/* Theme Option Cards */
.theme-card-option {
  transition: all 0.2s ease;
}
.theme-card-option:hover {
  transform: translateY(-2px);
  border-color: var(--accent-color) !important;
  box-shadow: 0 4px 10px var(--glow-color);
}
.theme-card-option.active {
  border-color: var(--accent-color) !important;
  box-shadow: 0 0 8px var(--glow-color);
}

/* Screen reader accessibility utility */
.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;
}

/* Subtle theme selector styles */
.theme-select-container {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 6px 10px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.theme-select-container:hover {
  border-color: var(--accent-color);
}
.theme-select-icon {
  font-size: 1.1rem !important;
  color: var(--text-secondary);
}
.theme-select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
}

/* Toolbar selectors (Font & Size) styling */
.toolbar-select-container {
  display: flex;
  align-items: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2px 6px;
  height: 32px;
  transition: border-color 0.2s ease;
}
.toolbar-select-container:hover {
  border-color: var(--accent-color);
}
.toolbar-select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
}

/* Bold/Italic/Underline/Strike etc. character overrides on toolbar */
.font-weight-bold-text {
  font-family: var(--font-sans) !important;
  font-weight: 800 !important;
  font-size: 0.85rem !important;
}

/* Split Preview Header and Run Button styling */
.split-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  user-select: none;
  height: 40px;
}
.preview-title-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
}
.btn-run-preview {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px var(--space-1) !important;
  font-size: 0.75rem !important;
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
  border: 1px solid var(--border-color);
  color: var(--accent-color) !important;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--border-radius);
}
.btn-run-preview:hover {
  background: var(--accent-color);
  color: var(--bg-primary) !important;
  border-color: var(--accent-color);
  box-shadow: 0 0 10px var(--glow-color);
}

/* Future Ads layout card */
.ad-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px dashed var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-1) var(--space-2);
  min-height: 100px;
  text-align: center;
  margin-top: var(--space-2);
}

/* Command Palette Styles */
.command-palette-dialog {
  width: 100%;
  max-width: 500px;
  border-radius: 8px;
  padding: 0;
  border: 1px solid var(--border-color);
  box-shadow: var(--panel-shadow);
  overflow: hidden;
  position: fixed;
  top: 15%;
  left: 50%;
  transform: translate(-50%, 0);
  background: var(--bg-secondary);
}

.command-palette-header {
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  padding: 12px;
}

.command-palette-search-input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
}

.command-palette-search-input:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 5px var(--glow-color);
}

.command-palette-body {
  max-height: 320px;
  overflow-y: auto;
  background: var(--bg-secondary);
}

.command-palette-list {
  display: flex;
  flex-direction: column;
}

.command-palette-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  transition: background 0.15s ease, color 0.15s ease;
}

.command-palette-item:hover,
.command-palette-item.active {
  background: var(--accent-color);
  color: #ffffff !important;
}

.command-palette-item:hover .command-palette-shortcut,
.command-palette-item.active .command-palette-shortcut {
  color: #ffffff !important;
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

.command-palette-shortcut {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  transition: all 0.15s ease;
}

/* Settings Dialog Styles */
.settings-dialog {
  display: none;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--panel-shadow);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.settings-dialog[open] {
  display: flex;
  flex-direction: column;
}

.settings-grid-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  overflow-y: auto;
  flex: 1;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 36px;
}

.settings-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.settings-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px 12px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  outline: none;
  min-width: 180px;
  cursor: pointer;
  transition: border-color 0.2s;
}

.settings-select:focus {
  border-color: var(--accent-color);
}

.settings-btn-group {
  display: flex;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.settings-btn-opt {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
  transition: all 0.2s;
  border-right: 1px solid var(--border-color);
}

.settings-btn-opt:last-child {
  border-right: none;
}

.settings-btn-opt.active {
  background: var(--accent-color);
  color: #ffffff !important;
}

.settings-btn-opt:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.settings-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-number-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px 10px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  width: 75px;
  outline: none;
  text-align: center;
}

.settings-number-input:focus {
  border-color: var(--accent-color);
}

.settings-btn-action {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 10px;
  cursor: pointer;
  transition: all 0.2s;
}

.settings-btn-action:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

.settings-label-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.settings-divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--space-1) 0;
}

.settings-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.settings-checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.settings-checkbox-item:hover {
  color: var(--text-primary);
}

.settings-checkbox-item input[type="checkbox"] {
  accent-color: var(--accent-color);
  cursor: pointer;
}

.settings-version-label {
  font-size: 0.72rem;
  color: var(--text-secondary);
  text-align: center;
  margin-top: var(--space-2);
}

/* Scoped caret and overscroll styles */
.editor-textarea.cursor-slim {
  caret-color: var(--editor-caret, var(--accent-color));
}

.editor-textarea.cursor-wide {
  caret-color: var(--editor-caret, var(--accent-color));
  caret-shape: block; /* Thick block cursor style */
}

.editor-textarea.overscroll-none {
  padding-bottom: var(--space-2) !important;
}

.editor-textarea.overscroll-half {
  padding-bottom: 50vh !important;
}

.editor-textarea.overscroll-full {
  padding-bottom: 100vh !important;
}

/* Dynamic Editor Status Bar */
.editor-status-bar {
  position: absolute;
  bottom: 8px;
  right: 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  pointer-events: none;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

.editor-status-bar:not(.hidden) {
  display: flex !important;
}

.editor-status-bar .vim-mode-badge {
  font-weight: 700;
  padding: 2px 4px;
  border-radius: 2px;
  text-transform: uppercase;
}

.editor-status-bar .vim-mode-badge.normal {
  background: var(--accent-color);
  color: #ffffff;
}

.editor-status-bar .vim-mode-badge.insert {
  background: #10b981;
  color: #ffffff;
}

/* Rich Text Visual Area Styles */
.editor-richarea {
  width: 100%;
  height: 100%;
  border: none;
  background: var(--editor-bg, transparent);
  color: var(--editor-text, var(--text-primary));
  caret-color: var(--editor-caret, var(--accent-color));
  font-family: var(--font-sans);
  font-size: inherit;
  line-height: 1.6;
  padding: var(--space-2);
  outline: none;
  overflow-y: auto;
  word-wrap: break-word;
  white-space: normal;
  text-align: left;
}

.editor-richarea[contenteditable="true"]:empty:before {
  content: attr(placeholder);
  color: var(--text-secondary);
  opacity: 0.7;
  display: block;
}

.editor-richarea b, .editor-richarea strong {
  font-weight: 700;
}

.editor-richarea i, .editor-richarea em {
  font-style: italic;
}

.editor-richarea u {
  text-decoration: underline;
}

.editor-richarea s, .editor-richarea strike {
  text-decoration: line-through;
}

.editor-richarea h1 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-top: 12px;
  margin-bottom: 8px;
}

.editor-richarea h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 10px;
  margin-bottom: 6px;
}