/* ==========================================================================
   REVISION ATLAS — DESIGN SYSTEM & STUDIO STYLES
   Private Manuscript Continuity & Revision Studio
   ========================================================================== */

/* BUNDLED EDITORIAL & PREMIUM FONTS (100% Offline & Local Private) */
@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url('./fonts/fraunces.woff2') format('woff2');
}

@font-face {
  font-family: 'Crimson Pro';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('./fonts/crimson-pro.woff2') format('woff2');
}

@font-face {
  font-family: 'Crimson Pro';
  font-style: italic;
  font-weight: 300 700;
  font-display: swap;
  src: url('./fonts/crimson-pro-italic.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('./fonts/dm-sans.woff2') format('woff2');
}

/* RESET & BASE */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* EDITORIAL & PREMIUM TYPOGRAPHY STACKS (Fraunces + Crimson Pro + DM Sans) */
  --font-display: 'Fraunces', 'Iowan Old Style', 'Baskerville', 'Playfair Display', 'Charter', 'Palatino', 'Georgia', serif;
  --font-ui: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI Variable', 'Segoe UI', 'Aptos', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier Prime', 'Courier New', monospace;
  
  --font-prose-editorial: 'Crimson Pro', 'Charter', 'Iowan Old Style', 'Palatino', 'Georgia', serif;
  --font-prose-classic: 'Courier Prime', 'Courier New', monospace;
  --font-prose-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI Variable', 'Segoe UI', 'Aptos', sans-serif;

  /* BRAND CONTINUITY (REVISION ATLAS MINERAL PALETTE) */
  --brand-mineral-green: #244d3f;
  --brand-muted-plum: #5e3c54;
  --brand-burnished-amber: #92602c;
  --brand-deep-teal: #1c4e5e;

  /* THEME TOKENS — DARK (DEFAULT: QUIET WRITING ROOM) */
  --bg-app: #121316;
  --bg-surface: #181a20;
  --bg-surface-elevated: #20232b;
  --bg-surface-hover: #272b35;
  --bg-sidebar: #14161b;
  --bg-canvas: #111215;
  --bg-input: #181a20;
  
  --border-subtle: #262934;
  --border-medium: #353a49;
  --border-focus: #38bdf8;

  --text-prose: #e4e2dd;
  --text-primary: #f1f3f7;
  --text-secondary: #9da3af;
  --text-muted: #676e7b;

  /* ACCENTS */
  --accent-primary: #0ea5e9;
  --accent-subtle: rgba(14, 165, 233, 0.12);
  --accent-gold: #d97706;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-purple: #8b5cf6;

  /* DIFF COLORS - DARK */
  --diff-added-bg: rgba(16, 185, 129, 0.16);
  --diff-added-text: #86efac;
  --diff-added-border: #10b981;
  --diff-removed-bg: rgba(244, 63, 94, 0.16);
  --diff-removed-text: #fda4af;
  --diff-removed-border: #f43f5e;
  --diff-changed-bg: rgba(217, 119, 6, 0.16);
  --diff-changed-text: #fcd34d;
  --diff-changed-border: #d97706;

  /* MANUSCRIPT TYPOGRAPHY RUNTIME PREFERENCES (OVERRIDDEN BY JS) */
  --manuscript-font: var(--font-prose-editorial);
  --manuscript-size: 1.15rem; /* ~18.4px */
  --manuscript-line-height: 1.78;
  --manuscript-width: 740px;
}

/* LIGHT THEME (WARM EDITORIAL WORKSPACE) */
[data-theme="light"] {
  --bg-app: #f7f6f2; /* warm stone / ivory */
  --bg-surface: #eeece5; /* muted stone surface */
  --bg-surface-elevated: #fdfcf9; /* subtle off-white writing surface */
  --bg-surface-hover: #f3f1ea;
  --bg-sidebar: #f0eee7;
  --bg-canvas: #fcfbfa;
  --bg-input: #ffffff;

  --border-subtle: #e0dcd2; /* hairline warm gray */
  --border-medium: #cfc9be;
  --border-focus: #0284c7;

  --text-prose: #222220; /* deep charcoal */
  --text-primary: #191c21;
  --text-secondary: #5f6572; /* muted slate */
  --text-muted: #8b929f;

  --accent-primary: #0284c7;
  --accent-subtle: rgba(2, 132, 199, 0.08);

  /* DIFF COLORS - LIGHT */
  --diff-added-bg: #e6f9ed;
  --diff-added-text: #166534;
  --diff-added-border: #22c55e;
  --diff-removed-bg: #fee2e2;
  --diff-removed-text: #991b1b;
  --diff-removed-border: #ef4444;
  --diff-changed-bg: #fef3c7;
  --diff-changed-text: #92400e;
  --diff-changed-border: #f59e0b;
}

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-ui);
  background: var(--bg-app);
  color: var(--text-primary);
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (max-width: 1550px) {
  #current-draft-edited {
    display: none;
  }
}

/* BRAND LOGO — 4 QUADRANTS */
.brand-mark-svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.brand-quad-1 { fill: var(--brand-mineral-green); }
.brand-quad-2 { fill: var(--brand-muted-plum); }
.brand-quad-3 { fill: var(--brand-burnished-amber); }
.brand-quad-4 { fill: var(--brand-deep-teal); }

/* TOP APPLICATION CHROME */
.app-header {
  height: 52px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.85rem;
  z-index: 30;
  user-select: none;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-titles {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-wordmark {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 0.68rem;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* ACTIVE WORKING DRAFT IDENTITY BADGE */
.active-draft-identity {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.28rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.active-draft-identity:hover {
  border-color: var(--border-medium);
  background: var(--bg-surface-hover);
}
.active-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
}

/* PRIMARY NAVIGATION */
.primary-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.42rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
  font-family: var(--font-ui);
}
.nav-tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}
.nav-tab-btn.active {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

/* UTILITY / ACTIONS SECTION */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.header-utility-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding-left: 0.35rem;
  border-left: 1px solid var(--border-subtle);
  margin-left: 0.2rem;
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.9rem;
}
.btn-icon:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
}

.theme-mode-select {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
}

/* PERSISTENT HISTORICAL VIEW BANNER */
.historical-view-banner {
  background: #f59e0b;
  color: #1a1500;
  padding: 0.5rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  display: none;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.12);
  z-index: 25;
}
.historical-view-banner.open {
  display: flex;
}
.banner-actions {
  display: flex;
  gap: 0.5rem;
}

/* MAIN APP BODY */
.app-container {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

/* WORKSPACES */
.workspace-view {
  flex: 1;
  display: none;
  height: 100%;
  overflow: hidden;
}
.workspace-view.active {
  display: flex;
}

/* ==========================================================================
   MODULE 1: WRITE WORKSPACE (TRI-PANE)
   ========================================================================== */
.write-workspace {
  display: flex;
  width: 100%;
  height: 100%;
}

/* LEFT: CHAPTER NAVIGATOR */
.chapter-navigator {
  width: 300px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}
.chapter-navigator.collapsed {
  width: 0;
  border-right: none;
}

.navigator-header {
  padding: 0.85rem 1rem 0.65rem;
  border-bottom: 1px solid var(--border-subtle);
}

.navigator-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.navigator-title {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* REVISION PROGRESS SUMMARY (NON-GAMIFIED) */
.revision-progress-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.3;
}
.progress-stat {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.chapter-search-box {
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}
.chapter-search-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 5px;
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
  color: var(--text-primary);
}

.chapter-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.4rem 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

/* CHAPTER ROW — QUIET, ELEGANT */
.chapter-item {
  padding: 0.65rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border-left: 3px solid transparent;
  background: transparent;
}
.chapter-item:hover {
  background: var(--bg-surface-hover);
}
.chapter-item.active {
  background: var(--bg-surface-elevated);
  border-left-color: var(--accent-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.chapter-title-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}
.chapter-title-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}
.chapter-item.active .chapter-title-text {
  font-weight: 600;
}
.chapter-words {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.chapter-item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.7rem;
}

/* CHAPTER REVISION STATUS PILLS (4 CLEAN STATES) */
.status-pill {
  padding: 0.1rem 0.45rem;
  border-radius: 3px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.status-pill.status-unreviewed {
  background: rgba(107, 114, 128, 0.15);
  color: var(--text-secondary);
}
.status-pill.status-in_revision {
  background: rgba(217, 119, 6, 0.15);
  color: #f59e0b;
}
.status-pill.status-revised {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}
.status-pill.status-locked {
  background: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
}

/* CENTER: MANUSCRIPT CANVAS */
.manuscript-canvas-pane {
  flex: 1;
  background: var(--bg-canvas);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.canvas-toolbar {
  height: 44px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.5rem;
  background: var(--bg-surface);
  flex-shrink: 0;
  gap: 0.35rem;
}

.toolbar-left, .toolbar-right, .toolbar-formatting {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.canvas-toolbar .btn-label-desktop {
  display: none;
}

#chapter-revision-status-select {
  max-width: 95px;
  font-size: 0.75rem;
  padding: 0.15rem 0.35rem;
}

.manuscript-title-input {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--bg-surface-elevated, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm, 6px);
  color: var(--text-primary);
  outline: none;
  padding: 0.2rem 0.4rem;
  max-width: 100px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: border-color 0.15s ease, max-width 0.2s ease;
}

.manuscript-title-input:focus {
  border-color: var(--accent-primary);
  max-width: 160px;
}

/* SAVE INDICATOR & SAVE BUTTON */
.save-indicator-group {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--bg-surface-elevated, rgba(255, 255, 255, 0.04));
  padding: 0.18rem 0.45rem 0.18rem 0.65rem;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-subtle);
}

.save-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.76rem;
  color: var(--text-secondary);
  font-weight: 500;
  user-select: none;
}

.save-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.save-dot.saved {
  background-color: #10b981;
  box-shadow: 0 0 6px rgba(16, 185, 129, 0.5);
}

.save-dot.saving,
.save-dot.dirty {
  background-color: #f59e0b;
  box-shadow: 0 0 6px rgba(245, 158, 11, 0.6);
  animation: pulseSave 0.9s infinite alternate ease-in-out;
}

.save-dot.error {
  background-color: #ef4444;
  box-shadow: 0 0 6px rgba(239, 68, 68, 0.8);
  animation: pulseSave 0.5s infinite alternate ease-in-out;
}

@keyframes pulseSave {
  0% { transform: scale(0.85); opacity: 0.6; }
  100% { transform: scale(1.2); opacity: 1; }
}

.btn-save {
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--accent-primary, #6366f1);
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 0.2rem 0.55rem;
  border-radius: 4px 0 0 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.15s ease;
}

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

.save-split-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.btn-save-trigger {
  font-size: 0.65rem;
  padding: 0.22rem 0.35rem;
  border-radius: 0 4px 4px 0;
  border-left: none !important;
  color: var(--accent-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

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

/* SAVE DROPDOWN MENU */
.save-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 290px;
  background: var(--bg-surface-elevated, #1c1d22);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  padding: 0.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  z-index: 500;
  animation: saveMenuFade 0.15s ease-out;
}

.save-dropdown-menu[hidden] {
  display: none !important;
}

@keyframes saveMenuFade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.save-dropdown-item {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.5rem 0.65rem;
  border: none;
  background: transparent;
  color: var(--text-primary);
  border-radius: 6px;
  text-align: left;
  cursor: pointer;
  font-size: 0.8rem;
  transition: background-color 0.15s ease;
}

.save-dropdown-item:hover,
.save-dropdown-item:focus-visible {
  background: var(--bg-hover);
  outline: 2px solid var(--accent-primary);
  outline-offset: -2px;
}

.save-item-icon {
  font-size: 1.05rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.save-item-body strong {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.25;
}

.save-item-body small {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.3;
  margin-top: 2px;
}

.save-dropdown-heading {
  padding: 0.45rem 0.75rem 0.2rem;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.save-dropdown-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 0.25rem 0;
}

/* HEADER CLOUD PILL */
.btn-cloud-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-elevated, rgba(255, 255, 255, 0.04));
  font-weight: 600;
  color: var(--text-primary);
  transition: all 0.15s ease;
}

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

/* CLOUD & DRIVE MODAL STYLING */
.cloud-status-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.85rem 1.1rem;
}

.cloud-sync-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cloud-provider-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1rem 1.15rem;
  transition: border-color 0.15s ease;
}

.cloud-provider-card:hover {
  border-color: var(--border-medium);
}

.cloud-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.cloud-card-icon {
  font-size: 1.35rem;
  flex-shrink: 0;
}

.cloud-card-header strong {
  font-size: 0.95rem;
  color: var(--text-primary);
  display: block;
}

.cloud-card-header p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0.15rem 0 0;
}

/* RESPONSIVE TOOLBAR COMPACTION (PREVENTS 182PX OVERFLOW) */
@media (max-width: 1024px) {
  .btn-label-desktop {
    display: none;
  }
  .canvas-toolbar {
    padding: 0 0.75rem;
  }
  .toolbar-left, .toolbar-right {
    gap: 0.35rem;
  }
  .manuscript-title-input {
    max-width: 120px;
  }
}

/* FOCUS / DISTRACTION-FREE ZEN MODE */
#btn-toggle-focus.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  font-weight: 600;
}

.write-workspace.focus-mode .chapter-navigator {
  width: 0 !important;
  border-right: none !important;
  padding: 0 !important;
}

.write-workspace.focus-mode .inspector-pane {
  width: 0 !important;
  border-left: none !important;
  padding: 0 !important;
}

.write-workspace.focus-mode .manuscript-paper {
  max-width: 820px;
  margin: 1.5rem auto 4rem;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.14);
}

/* TOAST NOTIFICATION */
.atlas-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-surface-elevated, #1e1e24);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  padding: 0.65rem 1.15rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 12px 30px -4px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 10000;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

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

.editor-scroll-wrap {
  flex: 1;
  overflow-y: auto;
  display: flex;
  justify-content: center;
  padding: 3rem 1.5rem 6rem;
}

.manuscript-paper {
  width: 100%;
  max-width: var(--manuscript-width);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.chapter-heading-display {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  line-height: 1.25;
}

/* PAPER HEADER & INLINE CHAPTER TITLE */
.paper-header-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}

.chapter-number-label {
  font-family: var(--font-ui);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.chapter-title-paper-input {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  background: transparent;
  border: none;
  border-radius: 4px;
  padding: 0.2rem 0;
  outline: none;
  width: 100%;
  transition: all 0.2s ease;
  line-height: 1.25;
}

.chapter-title-paper-input:hover {
  background: rgba(255, 255, 255, 0.02);
}

.chapter-title-paper-input:focus {
  background: var(--bg-surface);
  padding: 0.2rem 0.5rem;
}

.chapter-title-paper-input::placeholder {
  color: var(--text-muted);
  font-style: italic;
  font-weight: 400;
  opacity: 0.6;
}

/* FORMATTING CONTROLS */
.toolbar-formatting {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-format {
  min-width: 30px;
  height: 28px;
  padding: 0 0.55rem;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-autoformat {
  background: rgba(14, 165, 233, 0.12);
  color: #0284c7;
  border: 1px solid rgba(14, 165, 233, 0.25);
  font-weight: 600;
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  transition: all 0.15s ease;
}

[data-theme="dark"] .btn-autoformat {
  background: rgba(14, 165, 233, 0.18);
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.3);
}

.btn-autoformat:hover {
  background: rgba(14, 165, 233, 0.28);
  transform: translateY(-1px);
}

.chapter-rename-icon {
  font-size: 0.75rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.1rem 0.25rem;
  border-radius: 3px;
  opacity: 0.6;
  transition: all 0.15s ease;
}

.chapter-item:hover .chapter-rename-icon {
  opacity: 1;
}

.chapter-rename-icon:hover {
  color: var(--accent-primary);
  background: var(--bg-surface-elevated);
}

.manuscript-textarea {
  width: 100%;
  min-height: 60vh;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--manuscript-font);
  font-size: var(--manuscript-size);
  line-height: var(--manuscript-line-height);
  color: var(--text-prose);
  padding: 0;
  letter-spacing: 0.01em;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  white-space: pre-wrap;
  word-wrap: break-word;
  caret-color: var(--accent-primary);
}

/* RIGHT: INSPECTOR PANE */
.inspector-pane {
  width: 340px;
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}
.inspector-pane.collapsed {
  width: 0;
  border-left: none;
}

.inspector-nav {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.inspector-tab-btn {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0.6rem 0.4rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
}
.inspector-tab-btn:hover {
  color: var(--text-primary);
}
.inspector-tab-btn.active {
  color: var(--text-primary);
  font-weight: 600;
  border-bottom-color: var(--accent-primary);
  background: var(--bg-surface-elevated);
}

.inspector-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.1rem;
}

/* INSPECTOR SECTION CARDS */
.inspector-section {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* CHAPTER FUNCTION CARDS */
.function-quick-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 7px;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.function-field-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.function-field-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
.function-input, .function-textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 5px;
  padding: 0.4rem 0.6rem;
  font-size: 0.8rem;
  color: var(--text-primary);
  font-family: var(--font-ui);
}
.function-textarea {
  min-height: 52px;
  resize: vertical;
  line-height: 1.4;
}

.function-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.function-tag-pill {
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.68rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.function-tag-pill:hover {
  border-color: var(--border-medium);
  color: var(--text-primary);
}
.function-tag-pill.selected {
  background: var(--brand-deep-teal);
  color: #ffffff;
  border-color: var(--brand-deep-teal);
}

/* ==========================================================================
   MODULE 2: COMPARE WORKSPACE
   ========================================================================== */
.compare-workspace {
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--bg-app);
}

.compare-top-bar {
  padding: 0.75rem 1.5rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-shrink: 0;
}

.compare-picker-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
}

.compare-select {
  flex: 1;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  color: var(--text-primary);
  font-family: var(--font-ui);
}

.compare-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.compare-panes-wrap {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.compare-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-subtle);
  overflow: hidden;
}
.compare-pane:last-child {
  border-right: none;
}

.compare-pane-header {
  padding: 0.6rem 1.25rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.compare-pane-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  font-family: var(--font-prose-editorial);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-prose);
  white-space: pre-wrap;
}

/* FUNCTION DIFF NOTIFICATION */
.function-diff-banner {
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.function-diff-header {
  font-size: 0.75rem;
  font-weight: 700;
  color: #f59e0b;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* DIFF HIGHLIGHTS */
.diff-added {
  background: var(--diff-added-bg);
  color: var(--diff-added-text);
  border-bottom: 1px solid var(--diff-added-border);
}
.diff-removed {
  background: var(--diff-removed-bg);
  color: var(--diff-removed-text);
  text-decoration: line-through;
  opacity: 0.75;
}

/* ==========================================================================
   MODULE 3: REFERENCE WORKSPACE (LEXICON, MOTIFS, CANON, TIMELINE, FUNCTION MAP)
   ========================================================================== */
.reference-workspace {
  flex-direction: column;
  width: 100%;
  height: 100%;
}

.ref-subnav {
  height: 44px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 0.4rem;
}

.ref-content-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
}

/* MANUSCRIPT FUNCTION MAP TABLE */
.function-map-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  background: var(--bg-surface-elevated);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}
.function-map-table th {
  background: var(--bg-surface);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}
.function-map-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  vertical-align: top;
}
.function-map-table tr:hover {
  background: var(--bg-surface-hover);
}

/* NEUTRAL OBSERVATIONS BANNER */
.observations-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--brand-burnished-amber);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.observations-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--brand-burnished-amber);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   MODULE 4: VERSION HISTORY WORKSPACE
   ========================================================================== */
.versions-workspace {
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--bg-app);
}

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

.versions-body {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.cycle-group {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.cycle-header {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.version-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.version-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: all 0.15s ease;
}
.version-card:hover {
  border-color: var(--border-medium);
}
.version-card.is-active {
  border-color: #10b981;
  box-shadow: 0 0 0 1px #10b981;
}

.version-type-pill {
  padding: 0.12rem 0.45rem;
  border-radius: 3px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.type-working { background: rgba(16, 185, 129, 0.18); color: #10b981; }
.type-reference { background: rgba(2, 132, 199, 0.18); color: #0284c7; }
.type-archive { background: rgba(107, 114, 128, 0.18); color: #9ca3af; }
.type-master { background: rgba(139, 92, 246, 0.18); color: #8b5cf6; }
.type-safety { background: rgba(217, 119, 6, 0.18); color: #d97706; }
.type-final { background: rgba(244, 63, 94, 0.18); color: #f43f5e; }

/* ==========================================================================
   MODULE 5: FINAL DRAFT FORMATTER & EXPORT
   ========================================================================== */
.finaldraft-workspace {
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--bg-app);
}

.finaldraft-toolbar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.preset-selector-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.finaldraft-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* FORMATTER SETTINGS & PRE-FLIGHT COLUMN */
.finaldraft-controls-pane {
  width: 380px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex-shrink: 0;
}

.convention-notice {
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
  line-height: 1.4;
}

.preflight-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 7px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.preflight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.8rem;
  line-height: 1.35;
}

/* LIVE PAGED MANUSCRIPT PREVIEW */
.finaldraft-preview-pane {
  flex: 1;
  background: #2a2d35; /* dark viewing stage */
  overflow-y: auto;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

/* AUTHENTIC 8.5x11in MANUSCRIPT PAGE SIMULATOR */
.manuscript-page {
  width: 8.5in;
  min-height: 11in;
  background: #ffffff;
  color: #111111;
  box-shadow: 0 4px 20px rgba(0,0,0,0.35);
  padding: 1in;
  position: relative;
  display: flex;
  flex-direction: column;
  font-family: 'Courier New', Courier, monospace; /* default manuscript font */
  font-size: 12pt;
  line-height: 2.0;
  box-sizing: border-box;
}

.manuscript-page.style-clean {
  font-family: 'Georgia', 'Charter', serif;
  font-size: 11.5pt;
  line-height: 1.5;
  color: #1a1a1a;
}

.page-running-head {
  position: absolute;
  top: 0.5in;
  right: 1in;
  font-size: 10pt;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #555555;
}

.manuscript-title-page {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 9in;
}

.title-page-author-block {
  font-size: 11pt;
  line-height: 1.4;
}

.title-page-center-block {
  text-align: center;
  margin-top: 2in;
}

.title-page-title {
  font-size: 18pt;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.title-page-subtitle {
  font-size: 13pt;
  margin-top: 0.5rem;
}

.title-page-byline {
  font-size: 12pt;
  margin-top: 1.5rem;
}

.title-page-wordcount {
  text-align: right;
  font-size: 11pt;
}

.chapter-start-drop {
  margin-top: 2in;
}

.scene-break-display {
  text-align: center;
  margin: 1.5rem 0;
  letter-spacing: 0.5em;
}

/* ==========================================================================
   BUTTONS, MODALS, INPUTS & GENERAL UTILITIES
   ========================================================================== */
.btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.42rem 0.85rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-ui);
  transition: all 0.15s ease;
}
.btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
}
.btn-primary {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
}
.btn-primary:hover {
  filter: brightness(1.1);
}
.btn-sm {
  padding: 0.28rem 0.6rem;
  font-size: 0.75rem;
}

[hidden] {
  display: none !important;
}

body.modal-scroll-locked {
  overflow: hidden !important;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(3px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.modal-overlay.open {
  display: flex;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  width: 90%;
  max-width: 580px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}
.modal-dialog.modal-lg {
  max-width: 820px;
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  background: var(--bg-sidebar);
}

/* SMART IMPORT & STRUCTURING PREVIEW STYLES */
.import-chapter-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: border-color 0.15s ease;
}
.import-chapter-card:hover {
  border-color: var(--border-medium);
}
.import-chapter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.import-chapter-title-input {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  flex: 1;
}
.import-chapter-title-input:focus {
  outline: 2px solid var(--border-focus);
  border-color: transparent;
}
.import-chapter-meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  color: var(--text-muted);
}
.import-chapter-snippet {
  font-family: var(--font-prose-editorial);
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-left: 0.25rem;
}
.import-entity-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  color: var(--text-primary);
}
.import-entity-tag .entity-count {
  font-size: 0.65rem;
  color: var(--accent-primary);
  font-weight: 700;
}
.drag-over-zone {
  outline: 2px dashed var(--accent-primary) !important;
  outline-offset: -4px !important;
  background: rgba(36, 77, 63, 0.08) !important;
}

/* SCROLLBARS */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-subtle); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-medium); }

/* ==========================================================================
   PRINT STYLES FOR CLEAN OFFLINE PDF EXPORT
   ========================================================================== */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    height: auto !important;
    overflow: visible !important;
  }
  .app-header, .canvas-toolbar, .chapter-navigator, .inspector-pane, 
  .finaldraft-toolbar, .finaldraft-controls-pane, .modal-overlay,
  .historical-view-banner {
    display: none !important;
  }
  .workspace-view {
    display: none !important;
  }
  #view-finaldraft {
    display: block !important;
  }
  .finaldraft-preview-pane {
    background: transparent !important;
    padding: 0 !important;
    display: block !important;
  }
  .manuscript-page {
    box-shadow: none !important;
    page-break-after: always !important;
    break-after: page !important;
    padding: 1in !important;
    margin: 0 !important;
    width: 100% !important;
    min-height: auto !important;
  }
}

/* ADVANCED COMPARE & MULTI-LEVEL ANALYSIS */
.diff-toolbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 1.5rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.diff-view-tabs {
  display: flex;
  gap: 0.35rem;
}

.diff-tab-btn {
  padding: 0.3rem 0.65rem;
  border-radius: 5px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.diff-tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}
.diff-tab-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  font-weight: 600;
}

.diff-intensity-badge {
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
}

.diff-map-strip {
  display: flex;
  height: 18px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  width: 140px;
}
.map-slice {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  font-weight: bold;
  cursor: pointer;
  transition: opacity 0.15s ease;
}
.map-slice:hover {
  opacity: 0.8;
}

.compare-analysis-columns {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.compare-metrics-sidebar {
  width: 320px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  flex-shrink: 0;
}

.compare-diff-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.para-diff-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 7px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 0.15s ease;
}
.para-diff-card:hover {
  border-color: var(--border-medium);
}

.para-diff-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.para-diff-content {
  font-family: var(--font-prose-editorial);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-prose);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.para-added {
  background: var(--diff-added-bg);
  border-left: 4px solid var(--diff-added-border);
}
.para-removed {
  background: var(--diff-removed-bg);
  border-left: 4px solid var(--diff-removed-border);
}
.para-moved {
  background: rgba(139, 92, 246, 0.15);
  border-left: 4px solid var(--accent-purple);
}
.para-modified {
  border-left: 4px solid #f59e0b;
}
.para-unchanged {
  border-left: 4px solid transparent;
  opacity: 0.85;
}

.diff-inline-removed {
  background: var(--diff-removed-bg);
  color: var(--diff-removed-text);
  text-decoration: line-through;
  padding: 0 0.2rem;
  border-radius: 2px;
}

.diff-inline-added {
  background: var(--diff-added-bg);
  color: var(--diff-added-text);
  font-weight: 600;
  padding: 0 0.2rem;
  border-radius: 2px;
}

.btn-amber {
  background: rgba(217, 119, 6, 0.15);
  color: #f59e0b;
  border-color: rgba(217, 119, 6, 0.35);
}
.btn-amber:hover {
  background: rgba(217, 119, 6, 0.25);
  border-color: #f59e0b;
}

.type-archive {
  background: rgba(107, 114, 128, 0.18);
  color: #9ca3af;
  border: 1px solid rgba(107, 114, 128, 0.35);
}

/* ==========================================================================
   HELP SYSTEM & STUDIO GUIDE STYLES
   ========================================================================== */
.help-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: all 0.15s ease;
  vertical-align: middle;
  flex-shrink: 0;
  user-select: none;
}
.help-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-subtle);
}
.help-btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 1px;
}
.help-btn[aria-expanded="true"] {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

/* CONTEXTUAL HELP POPOVER */
.help-popover {
  position: fixed;
  z-index: 1200;
  width: 320px;
  max-width: calc(100vw - 24px);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  animation: helpFadeIn 0.15s ease;
}
.help-popover[hidden] {
  display: none !important;
}

@keyframes helpFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.help-popover-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.help-popover-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 700;
}
.help-popover-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}
.help-popover-close:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}
.help-popover-body {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-secondary);
}
.help-popover-body strong {
  color: var(--text-primary);
}
.help-popover-footer {
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.5rem;
  display: flex;
  justify-content: flex-end;
}
.help-popover-link {
  background: transparent;
  border: none;
  color: var(--accent-primary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}
.help-popover-link:hover {
  text-decoration: underline;
}

/* STUDIO GUIDE MODAL & DIALOG */
.guide-dialog {
  max-width: 820px;
  width: 90%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}
.guide-body {
  overflow-y: auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.guide-search-wrap {
  width: 100%;
}
.guide-tabs {
  display: flex;
  gap: 0.4rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.3rem;
  overflow-x: auto;
}
.guide-tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.5rem 0.9rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.guide-tab-btn:hover {
  color: var(--text-primary);
}
.guide-tab-btn.active, .guide-tab-btn[aria-selected="true"] {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}
.guide-panels {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.guide-panel {
  display: none;
  flex-direction: column;
  gap: 1rem;
}
.guide-panel.active {
  display: flex;
}
.guide-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.guide-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-primary);
  font-weight: 700;
}
.guide-card-summary {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.guide-card-content {
  font-size: 0.82rem;
  color: var(--text-prose);
  line-height: 1.6;
}
.guide-card-tips {
  margin-top: 0.4rem;
  padding: 0.6rem 0.85rem;
  background: var(--bg-surface);
  border-left: 3px solid var(--accent-primary);
  border-radius: 0 4px 4px 0;
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.guide-card-tips strong {
  color: var(--text-primary);
}
.guide-card-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--accent-primary);
  align-self: flex-start;
}
.shortcut-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin-top: 0.5rem;
}
.shortcut-table th, .shortcut-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}
.shortcut-table th {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.7rem;
}
.key-badge {
  display: inline-block;
  padding: 0.15rem 0.4rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
}

@media (prefers-reduced-motion: reduce) {
  .help-popover, .guide-tab-btn, .help-btn {
    animation: none !important;
    transition: none !important;
  }
}


/* ==========================================================================
   MOBILE & RESPONSIVE ARCHITECTURE (3-TIER BREAKPOINTS)
   ========================================================================== */

/* TOUCH BASELINE & MANIPULATION */
button, select, input, .nav-tab-btn, .help-btn, .mobile-nav-btn {
  touch-action: manipulation;
}

/* DRAWER BACKDROP (COMMON) */
.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 850;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.drawer-backdrop.is-active,
.drawer-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}
body.drawer-scroll-locked {
  overflow: hidden !important;
  touch-action: none;
}

/* DESKTOP DEFAULTS FOR MOBILE-SPECIFIC ELEMENTS (HIDDEN > 900px) */
.drawer-backdrop {
  display: none;
}
.mobile-bottom-nav {
  display: none;
}
.mobile-more-sheet {
  display: none;
}
.fd-mobile-toggle-strip {
  display: none;
}

@media (max-width: 900px) {
  .drawer-backdrop {
    display: block;
  }
}

/* --------------------------------------------------------------------------
   TIER 2: TABLET / INTERMEDIATE BREAKPOINT (601px – 900px)
   -------------------------------------------------------------------------- */
@media (max-width: 900px) and (min-width: 601px) {
  .brand-subtitle {
    display: none;
  }
  .active-draft-identity #current-draft-edited,
  .active-draft-identity #current-draft-type {
    display: none;
  }
  .header-actions .btn-sm[data-view="finaldraft"],
  .header-actions .btn-sm[data-view="versions"],
  .header-actions #btn-header-cloud-sync .header-btn-text {
    display: none; /* These views are already tabs in the primary-nav */
  }
  .app-header {
    padding: 0 0.85rem;
    overflow: hidden;
  }
  .primary-nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    max-width: 45%;
  }
  .primary-nav::-webkit-scrollbar {
    display: none;
  }
  .nav-tab-btn {
    padding: 0.4rem 0.65rem;
    font-size: 0.78rem;
  }
  .compare-metrics-sidebar {
    width: 270px;
    padding: 1rem;
  }
  .chapter-navigator {
    width: 240px;
  }
  .inspector-pane {
    width: 260px;
  }
  .manuscript-canvas-pane {
    min-width: 0;
    flex: 1;
    overflow-x: hidden;
  }
  .canvas-toolbar {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .canvas-toolbar::-webkit-scrollbar {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   TIER 1: FULL MOBILE BREAKPOINT (<= 600px)
   -------------------------------------------------------------------------- */
@media (max-width: 600px) {
  /* TOUCH TARGETS & FORM INPUT FONT SIZE (PREVENTS IOS AUTO-ZOOM) */
  input, select, textarea {
    font-size: 16px !important;
  }

  .btn, .nav-tab-btn, .mobile-nav-btn {
    min-height: 44px;
  }
  .help-btn {
    min-height: 32px;
    min-width: 32px;
    padding: 4px;
  }

  /* MOBILE APP HEADER */
  .app-header {
    height: 48px;
    padding: 0 0.65rem;
  }
  .brand-wordmark {
    font-size: 0.95rem;
  }
  .brand-subtitle {
    display: none;
  }
  .primary-nav {
    display: none; /* Relocated to mobile-bottom-nav */
  }
  .active-draft-identity {
    display: none;
  }
  .header-actions {
    gap: 0.35rem;
    flex-shrink: 0;
  }
  .header-actions .btn-sm[data-view="finaldraft"],
  .header-actions .btn-sm[data-view="versions"],
  .header-actions #btn-open-guide,
  .header-actions #btn-header-cloud-sync,
  .header-actions .btn-sm[onclick*="openSearchModal"] {
    display: none; /* Moved to mobile bottom nav and more sheet */
  }
  .theme-mode-select {
    font-size: 0.75rem !important;
    padding: 0.2rem 0.4rem;
    height: 34px;
    max-width: 80px;
  }
  .header-actions .btn-icon {
    width: 34px;
    height: 34px;
  }

  /* OFF-CANVAS SLIDE-OUT DRAWERS WITH HARDWARE-ACCELERATED TRANSFORMS */
  .chapter-navigator {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 86%;
    max-width: 330px;
    height: 100vh;
    height: 100dvh;
    z-index: 900;
    transform: translateX(-100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 6px 0 28px rgba(0, 0, 0, 0.6);
  }
  .chapter-navigator.is-open {
    transform: translateX(0);
  }
  .chapter-navigator.collapsed {
    transform: translateX(-100%);
    width: 86%;
  }

  .inspector-pane {
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    width: 88%;
    max-width: 350px;
    height: 100vh;
    height: 100dvh;
    z-index: 900;
    transform: translateX(100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -6px 0 28px rgba(0, 0, 0, 0.6);
  }
  .inspector-pane.is-open {
    transform: translateX(0);
  }
  .inspector-pane.collapsed {
    transform: translateX(100%);
    width: 88%;
  }

  /* FULL-WIDTH CANVAS PANE */
  .manuscript-canvas-pane {
    width: 100%;
    max-width: 100vw;
    flex: 1;
    overflow-x: hidden;
  }
  .canvas-toolbar {
    padding: 0 0.65rem;
    height: 48px;
    gap: 0.4rem;
    width: 100%;
    max-width: 100vw;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    box-sizing: border-box;
  }
  .canvas-toolbar::-webkit-scrollbar {
    display: none;
  }
  .toolbar-left, .toolbar-right, .toolbar-formatting {
    flex-shrink: 0;
  }
  .toolbar-left .btn-sm,
  .toolbar-right .btn-sm,
  .toolbar-formatting .btn-sm {
    min-height: 40px;
    min-width: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .manuscript-title-input {
    width: 140px;
    height: 40px;
  }
  .btn-format, .btn-autoformat {
    min-height: 40px;
  }

  /* MANUSCRIPT PAPER PADDING & SAFE AREA CLEARANCE */
  .editor-scroll-wrap {
    padding: 1.25rem 0.85rem calc(env(safe-area-inset-bottom, 0px) + 72px);
  }
  .manuscript-paper {
    max-width: 100%;
    gap: 1rem;
  }
  .chapter-title-paper-input {
    font-size: 1.65rem;
    line-height: 1.25;
  }
  .manuscript-textarea {
    min-height: 52vh;
    font-size: 1.08rem;
    line-height: 1.7;
  }

  /* MOBILE BOTTOM NAVIGATION (THUMB ZONE) */
  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(54px + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    z-index: 750;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.25);
  }
  .mobile-nav-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    min-height: 48px;
    padding: 3px 0;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: var(--font-ui);
  }
  .mobile-nav-btn.active, .mobile-nav-btn:hover {
    color: var(--accent-primary);
  }
  .mobile-nav-icon {
    font-size: 1.18rem;
    line-height: 1;
    margin-bottom: 2px;
  }
  .mobile-nav-label {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.02em;
  }

  /* MOBILE MORE WORKSPACES SHEET */
  .mobile-more-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-surface-elevated);
    border-top: 1px solid var(--border-medium);
    border-radius: 16px 16px 0 0;
    z-index: 950;
    padding: 1.25rem 1rem calc(env(safe-area-inset-bottom, 0px) + 1.25rem);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: 0 -12px 35px rgba(0, 0, 0, 0.55);
    transform: translateY(100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .mobile-more-sheet.is-open {
    display: flex;
    transform: translateY(0);
  }
  .mobile-more-sheet[hidden] {
    display: none !important;
  }
  .more-sheet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-subtle);
  }
  .more-sheet-title {
    font-family: var(--font-display);
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--text-primary);
  }
  .more-sheet-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
  }
  .more-sheet-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 0.75rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    text-align: left;
    cursor: pointer;
    min-height: 54px;
    transition: all 0.15s ease;
  }
  .more-sheet-item:hover, .more-sheet-item.active {
    border-color: var(--accent-primary);
    background: var(--bg-surface-hover);
  }
  .more-item-icon {
    font-size: 1.15rem;
  }
  .more-item-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
  }
  .more-item-desc {
    font-size: 0.68rem;
    color: var(--text-secondary);
    line-height: 1.3;
  }

  /* COMPARE WORKSPACE MOBILE STACKING */
  .compare-top-bar {
    flex-direction: column;
    height: auto;
    padding: 0.75rem 0.85rem;
    gap: 0.5rem;
  }
  .compare-picker-group {
    width: 100%;
    justify-content: space-between;
  }
  .compare-select {
    flex: 1;
    max-width: none;
  }
  .diff-toolbar-row {
    flex-direction: column;
    height: auto;
    padding: 0.65rem 0.85rem;
    gap: 0.65rem;
    align-items: stretch;
  }
  .diff-view-tabs {
    overflow-x: auto;
    scrollbar-width: none;
  }
  .compare-analysis-columns {
    flex-direction: column;
  }
  .compare-metrics-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    max-height: 220px;
    padding: 1rem;
    flex-shrink: 0;
  }
  .compare-diff-scroll {
    padding: 1rem 0.85rem calc(env(safe-area-inset-bottom, 0px) + 72px);
  }
  .para-diff-card {
    padding: 0.85rem;
  }

  /* FINAL DRAFT MOBILE SEGMENTED CONTROL & SCALING */
  .finaldraft-toolbar {
    flex-direction: column;
    height: auto;
    padding: 0.75rem;
    gap: 0.6rem;
  }
  .finaldraft-toolbar > div {
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
  }
  .fd-mobile-toggle-strip {
    display: flex;
    width: 100%;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 3px;
    margin-bottom: 0.5rem;
  }
  .fd-mobile-toggle-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.45rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.15s ease;
    min-height: 42px;
  }
  .fd-mobile-toggle-btn.active {
    background: var(--accent-primary);
    color: #ffffff;
  }

  .finaldraft-body {
    flex-direction: column;
    padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 72px);
  }
  .finaldraft-controls-pane {
    width: 100%;
    border-right: none;
    padding: 1rem;
  }
  .finaldraft-controls-pane.fd-mobile-hidden {
    display: none !important;
  }
  .finaldraft-preview-pane {
    width: 100%;
    padding: 1rem 0.5rem;
    overflow-x: hidden;
  }
  .finaldraft-preview-pane.fd-mobile-hidden {
    display: none !important;
  }

  /* PROPORTIONALLY SCALED FINAL DRAFT SIMULATOR PAGE (NO HORIZONTAL OVERFLOW) */
  .paged-sheet {
    width: 100% !important;
    max-width: 100% !important;
    min-height: auto !important;
    padding: 1.5rem 1rem !important;
    box-sizing: border-box !important;
    font-size: 0.85rem !important;
    aspect-ratio: 8.5 / 11;
  }

  /* MODALS & DIALOGS RESPONSIVE ADAPTATION */
  .modal-dialog {
    width: 95vw !important;
    max-width: 95vw !important;
    max-height: 90vh !important;
    max-height: 90dvh !important;
    margin: auto !important;
    border-radius: 12px !important;
  }
  .guide-dialog {
    width: 95vw !important;
    max-width: 95vw !important;
  }

  /* CONTEXTUAL HELP POPOVER ON MOBILE (CENTER CLAMPED) */
  .help-popover {
    left: 12px !important;
    right: 12px !important;
    width: auto !important;
    max-width: calc(100vw - 24px) !important;
  }

  /* CLEARANCE FOR OTHER WORKSPACES */
  .versions-header {
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
  }
  .versions-workspace,
  #view-fragments,
  #view-characters,
  #view-analyze,
  .reference-workspace {
    padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 72px) !important;
  }
  .ref-subnav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .ref-subnav::-webkit-scrollbar {
    display: none;
  }
}