/* ===== CSS VARIABLES - MATERIAL 3 DESIGN SYSTEM ===== */
:root {
  /* === Material 3 Color Palette === */
  --md-sys-color-primary: #6750A4;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #EADDFF;
  --md-sys-color-on-primary-container: #21005D;
  --md-sys-color-secondary: #625B71;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #E8DEF8;
  --md-sys-color-on-secondary-container: #1D192B;
  --md-sys-color-tertiary: #7D5260;
  --md-sys-color-on-tertiary: #FFFFFF;
  --md-sys-color-tertiary-container: #FFD8E4;
  --md-sys-color-on-tertiary-container: #31111D;
  --md-sys-color-error: #B3261E;
  --md-sys-color-on-error: #FFFFFF;
  --md-sys-color-error-container: #F9DEDC;
  --md-sys-color-on-error-container: #410E0B;
  --md-sys-color-background: #FFFBFE;
  --md-sys-color-on-background: #1C1B1F;
  --md-sys-color-surface: #FFFBFE;
  --md-sys-color-on-surface: #1C1B1F;
  --md-sys-color-surface-variant: #E7E0EC;
  --md-sys-color-on-surface-variant: #49454F;
  --md-sys-color-outline: #79747E;
  --md-sys-color-outline-variant: #CAC4D0;
  --md-sys-color-shadow: #000000;
  --md-sys-color-scrim: #000000;
  --md-sys-color-inverse-surface: #313033;
  --md-sys-color-inverse-on-surface: #F4EFF4;
  --md-sys-color-inverse-primary: #D0BCFF;
  
  /* === Legacy Variables (for compatibility) === */
  --primary-color: var(--md-sys-color-primary);
  --primary-hover: #5341B5;
  --secondary-color: var(--md-sys-color-secondary);
  --success-color: #4CAF50;
  --warning-color: #FF9800;
  --error-color: var(--md-sys-color-error);
  --background-alt: var(--md-sys-color-surface-variant);
  --surface: var(--md-sys-color-surface);
  --surface-variant: var(--md-sys-color-surface-variant);
  --border: var(--md-sys-color-outline-variant);
  --text-primary: var(--md-sys-color-on-background);
  --text-secondary: var(--md-sys-color-on-surface-variant);
  --text-muted: var(--md-sys-color-outline);
  
  /* === Typography === */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;
  
  /* === Border Radius === */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* === Spacing === */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  
  /* === Transitions === */
  --transition-standard: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-quick: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* === Shadows === */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
  
  /* === Container === */
  --container-max: 1400px;
  --container-padding: 24px;
  
  --text-primary: var(--md-sys-color-on-background);
  --text-secondary: var(--md-sys-color-on-surface-variant);
  --text-muted: var(--md-sys-color-outline);
}

[data-theme="dark"] {
  /* Material 3 Dark Theme */
  --md-sys-color-primary: #D0BCFF;
  --md-sys-color-on-primary: #381E72;
  --md-sys-color-primary-container: #4F378B;
  --md-sys-color-on-primary-container: #EADDFF;
  --md-sys-color-secondary: #CCC2DC;
  --md-sys-color-on-secondary: #332D41;
  --md-sys-color-secondary-container: #4A4458;
  --md-sys-color-on-secondary-container: #E8DEF8;
  --md-sys-color-tertiary: #EFB8C8;
  --md-sys-color-on-tertiary: #492532;
  --md-sys-color-tertiary-container: #633B48;
  --md-sys-color-on-tertiary-container: #FFD8E4;
  --md-sys-color-error: #F2B8B5;
  --md-sys-color-on-error: #601410;
  --md-sys-color-error-container: #8C1D18;
  --md-sys-color-on-error-container: #F9DEDC;
  --md-sys-color-background: #1C1B1F;
  --md-sys-color-on-background: #E6E1E5;
  --md-sys-color-surface: #1C1B1F;
  --md-sys-color-on-surface: #E6E1E5;
  --md-sys-color-surface-variant: #49454F;
  --md-sys-color-on-surface-variant: #CAC4D0;
  --md-sys-color-outline: #938F99;
  --md-sys-color-outline-variant: #49454F;
  --md-sys-color-shadow: #000000;
  --md-sys-color-scrim: #000000;
  --md-sys-color-inverse-surface: #E6E1E5;
  --md-sys-color-inverse-on-surface: #313033;
  --md-sys-color-inverse-primary: #6750A4;
  
  /* Legacy variables */
  --primary-color: var(--md-sys-color-primary);
  --primary-hover: #B69DF8;
  --secondary-color: var(--md-sys-color-secondary);
  --success-color: #81C784;
  --warning-color: #FFB74D;
  --error-color: var(--md-sys-color-error);
  --background-alt: var(--md-sys-color-surface-variant);
  --surface: var(--md-sys-color-surface);
  --surface-variant: var(--md-sys-color-surface-variant);
  --border: var(--md-sys-color-outline-variant);
  --text-primary: var(--md-sys-color-on-background);
  --text-secondary: var(--md-sys-color-on-surface-variant);
  --text-muted: var(--md-sys-color-outline);
}

/* ===== DESKTOP LAYOUT (1024px - 1439px) ===== */
@media (min-width: 1024px) and (max-width: 1439px) {
  body {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
  }

  [data-theme="dark"] body {
    background: linear-gradient(135deg, #1a1a1d 0%, #0d0d0d 100%);
  }

  .app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px;
    width: 100%;
    box-sizing: border-box;
  }

  .office-hub {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 20px;
    width: 100%;
    box-sizing: border-box;
  }

  .hub-header {
    padding: 1.5rem 0;
    margin-bottom: 1.5rem;
  }

  .hub-main {
    padding: 0;
  }

  .welcome-section {
    margin-bottom: 2.5rem;
    text-align: center;
  }

  .welcome-title {
    font-size: clamp(1.75rem, 2.5vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
  }

  .welcome-subtitle {
    font-size: clamp(0.9rem, 1.2vw, 1.05rem);
    margin-bottom: 2rem;
  }

  /* Desktop App Grid */
  .app-grid {
    gap: 1.25rem;
    margin-bottom: 2.5rem;
  }

  /* Desktop App Cards - Medium Screens */
  .app-card {
    min-width: 260px;
    max-width: 260px;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .app-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  }

  .app-card:active {
    transform: translateY(-3px);
  }

  .card-content {
    padding: 1.75rem;
    gap: 1.25rem;
  }

  .card-icon {
    width: 56px;
    height: 56px;
    font-size: 1.5rem;
    border-radius: 16px;
  }

  .card-title {
    font-size: 1.15rem;
    font-weight: 600;
  }

  .card-description {
    font-size: 0.85rem;
    line-height: 1.5;
  }

  .card-footer {
    padding: 1rem 1.75rem;
  }

  /* Desktop Hub Panels - Grid Layout */
  .hub-panels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
  }

  .hub-panel-card {
    padding: 1.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  .hub-brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
  }

  .hub-brand span {
    font-size: 0.85rem;
  }
}

/* ===== DESKTOP LAYOUT (1440px+) ===== */
@media (min-width: 1440px) {
  body {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
  }

  [data-theme="dark"] body {
    background: linear-gradient(135deg, #1a1a1d 0%, #0d0d0d 100%);
  }

  .app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 24px;
    width: 100%;
    box-sizing: border-box;
  }

  .office-hub {
    max-width: 1400px;
    margin: 0 auto;
    padding: 48px 24px;
    width: 100%;
    box-sizing: border-box;
  }

  .hub-header {
    padding: 2rem 0;
    margin-bottom: 2rem;
  }

  .hub-main {
    padding: 0;
  }

  .welcome-section {
    margin-bottom: 4rem;
    text-align: center;
  }

  .welcome-title {
    font-size: clamp(2.25rem, 2.5vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
  }

  .welcome-subtitle {
    font-size: clamp(1rem, 1.2vw, 1.25rem);
    margin-bottom: 3rem;
  }

  /* Desktop App Grid */
  .app-grid {
    gap: 2rem;
    margin-bottom: 4rem;
  }

  /* Desktop App Cards - Premium */
  .app-card {
    min-width: 320px;
    max-width: 320px;
    border-radius: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .app-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  }

  .app-card:active {
    transform: translateY(-4px);
  }

  .card-content {
    padding: 2.5rem;
    gap: 1.75rem;
  }

  .card-icon {
    width: 72px;
    height: 72px;
    font-size: 2rem;
    border-radius: 20px;
  }

  .card-title {
    font-size: 1.5rem;
    font-weight: 600;
  }

  .card-description {
    font-size: 0.95rem;
    line-height: 1.6;
  }

  .card-footer {
    padding: 1.25rem 2.5rem;
  }

  /* Desktop Hub Panels - Grid Layout */
  .hub-panels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
  }

  .hub-panel-card {
    padding: 2rem;
    border-radius: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  /* Desktop Navbar - Premium Glassmorphism */
  .hub-brand {
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  }

  [data-theme="dark"] .hub-brand {
    background: rgba(40, 40, 44, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .hub-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
  }

  /* Desktop Profile Section */
  .hub-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  }

  [data-theme="dark"] .hub-profile {
    background: rgba(40, 40, 44, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .profile-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--md-sys-color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 600;
  }

  .profile-info {
    display: flex;
    flex-direction: column;
  }

  .profile-name {
    font-weight: 600;
    font-size: 0.95rem;
  }

  .profile-email {
    font-size: 0.85rem;
    color: var(--text-secondary);
  }

  /* Desktop Editor - Google Docs/Notion Style */
  .editor-page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 24px;
    width: 100%;
    box-sizing: border-box;
  }

  .editor-wrapper {
    padding: 3rem;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  }

  [data-theme="dark"] .editor-wrapper {
    background: rgba(40, 40, 44, 0.95);
  }

  /* Desktop Floating Sticky Toolbar */
  .toolbar {
    position: sticky;
    top: 24px;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 0.75rem 1.25rem;
    gap: 0.75rem;
  }

  [data-theme="dark"] .toolbar {
    background: rgba(40, 40, 44, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .toolbar-btn {
    min-width: 44px;
    min-height: 44px;
    border-radius: 12px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .toolbar-btn:hover {
    background: rgba(103, 80, 164, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .toolbar-btn.active {
    background: var(--md-sys-color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(103, 80, 164, 0.3);
  }

  .editor {
    padding: 4rem;
    max-width: 900px;
    margin: 0 auto;
    border-radius: 16px;
    background: white;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
  }

  [data-theme="dark"] .editor {
    background: #1c1b1f;
  }

  .editor:focus {
    box-shadow: 0 4px 24px rgba(103, 80, 164, 0.15);
    border: 1px solid var(--md-sys-color-primary);
  }

  /* Desktop Animations and Micro-interactions */
  .hub-brand,
  .hub-profile {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .hub-brand:hover,
  .hub-profile:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  }

  .hub-panel-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .hub-panel-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  }

  .hub-file-card,
  .settings-action-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .hub-file-card:hover,
  .settings-action-card:hover {
    transform: translateY(-6px);
  }

  /* Smooth fade-in animation for desktop */
  .office-hub {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }

  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Stagger animation for cards */
  .app-card {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .app-card:nth-child(1) { animation-delay: 0.1s; }
  .app-card:nth-child(2) { animation-delay: 0.2s; }
  .app-card:nth-child(3) { animation-delay: 0.3s; }
  .app-card:nth-child(4) { animation-delay: 0.4s; }

  /* Desktop Sidebar - Modern Design */
  .sidebar {
    width: 280px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    padding: 2rem 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  [data-theme="dark"] .sidebar {
    background: rgba(40, 40, 44, 0.95);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
  }

  .sidebar:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  }

  .sidebar-section {
    margin-bottom: 2rem;
  }

  .sidebar-section h3 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    padding: 0 0.5rem;
  }

  .sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-radius: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
  }

  .sidebar-nav-item:hover {
    background: rgba(103, 80, 164, 0.08);
    color: var(--md-sys-color-primary);
    transform: translateX(4px);
  }

  .sidebar-nav-item.active {
    background: var(--md-sys-color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(103, 80, 164, 0.3);
  }

  .sidebar-nav-item i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
  }

  /* Desktop Workspace Navigation */
  .workspace-nav {
    position: fixed;
    top: 50%;
    left: 2rem;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.3);
    z-index: 1000;
  }

  [data-theme="dark"] .workspace-nav {
    background: rgba(40, 40, 44, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .workspace-nav-item {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    min-width: 64px;
    padding: 0.85rem 0.75rem;
    border-radius: 18px;
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
  }

  .workspace-nav-item:hover,
  .workspace-nav-item.active {
    background: rgba(103, 80, 164, 0.1);
    color: var(--md-sys-color-primary);
    transform: scale(1.05);
  }

  .workspace-nav-item i {
    font-size: 1.25rem;
  }

  .workspace-nav-item span {
    font-size: 0.72rem;
    font-weight: 600;
  }

  /* Desktop Visual Hierarchy */
  .hub-panel {
    margin-bottom: 3rem;
  }

  .hub-panel-header {
    margin-bottom: 2rem;
  }

  .hub-panel-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
  }

  .hub-panel-header p {
    font-size: 1rem;
    color: var(--text-secondary);
  }

  .section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 3rem 0;
  }

  /* Desktop Card Elevation */
  .hub-file-card,
  .settings-action-card {
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  }

  .hub-file-card:hover,
  .settings-action-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  }

  /* Desktop Focus States */
  .hub-file-card:focus-visible,
  .settings-action-card:focus-visible,
  .app-card:focus-visible {
    outline: 2px solid var(--md-sys-color-primary);
    outline-offset: 2px;
  }

  /* Desktop Typography Hierarchy */
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
  }

  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }
  h5 { font-size: 1.125rem; }
  h6 { font-size: 1rem; }

  /* Desktop Button Hierarchy */
  .btn-primary {
    font-family: var(--font-display);
    font-weight: 600;
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(103, 80, 164, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(103, 80, 164, 0.3);
  }

  .btn-secondary {
    font-family: var(--font-display);
    font-weight: 600;
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  /* Ultra-Wide Monitor Optimization */
  @media (min-width: 1920px) {
    .office-hub,
    .app-container,
    .editor-page {
      max-width: 1600px;
      padding: 48px 32px;
    }

    .welcome-title {
      font-size: 3.5rem;
    }

    .welcome-subtitle {
      font-size: 1.5rem;
    }

    .app-card {
      min-width: 400px;
      max-width: 400px;
    }

    .editor {
      max-width: 1000px;
      padding: 5rem;
    }

    .hub-panels {
      grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    }
  }

  /* Extra Ultra-Wide Monitor (2560px+) */
  @media (min-width: 2560px) {
    .office-hub,
    .app-container,
    .editor-page {
      max-width: 1800px;
      padding: 64px 48px;
    }

    .welcome-title {
      font-size: 4rem;
    }

    .welcome-subtitle {
      font-size: 1.75rem;
    }

    .app-card {
      min-width: 440px;
      max-width: 440px;
    }

    .editor {
      max-width: 1100px;
      padding: 6rem;
    }

    .hub-panels {
      grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
    }
  }

  .excel-mode .editor-page,
  .access-mode .editor-page,
  .onenote-mode .editor-page,
  .ppt-mode .editor-page,
  .file-manager-mode .editor-page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 24px;
  }
}

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

*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  overflow-y: auto;
  
  /* Ensure responsive behavior */
  min-width: 320px;
  
  /* Smooth scrolling */
  scroll-behavior: smooth;
}

.hidden {
  display: none !important;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  background: var(--surface);
  color: var(--text-primary);
  transition: var(--transition);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: white;
  max-width: 300px;
}

.loading-logo {
  font-size: 4rem;
  margin-bottom: 1rem;
  animation: pulse 2s infinite;
}

.loading-content h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.loading-content p {
  opacity: 0.9;
  margin-bottom: 2rem;
}

.loading-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.loading-progress {
  height: 100%;
  background: white;
  border-radius: 2px;
  animation: loading 2s ease-in-out infinite;
}

@keyframes loading {
  0% { width: 0%; }
  50% { width: 70%; }
  100% { width: 100%; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* ===== MAIN APP ===== */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100%;
  max-width: 100vw;
  overflow: hidden;
  
  /* Ensure responsive behavior */
  box-sizing: border-box;
  min-width: 320px;
}

.app-container.hidden {
  display: none;
}

/* ===== HEADER ===== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  z-index: 100;
}

.header-left, .header-center, .header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.app-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-color);
}

.app-logo i {
  font-size: 1.5rem;
}

.document-title input {
  border: none;
  background: transparent;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  min-width: 200px;
}

.document-title input:hover {
  background: var(--border);
}

.document-title input:focus {
  background: var(--surface);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ===== TOOLBAR ===== */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  background: var(--md-sys-color-surface);
  padding: 0.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  
  /* Responsive width and overflow */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  
  /* Horizontal scroll for overflow */
  overflow-x: auto;
  overflow-y: hidden;
  
  /* Prevent items from shrinking below usable size */
  flex-shrink: 0;
  
  /* Custom scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline) transparent;
}

/* Make all toolbar items flexible */
.toolbar > * {
  flex-shrink: 1;
  min-width: 0;
}

/* Override flex-shrink for important items */
.toolbar > .toolbar-separator,
.toolbar > .toolbar-btn {
  flex-shrink: 0;
}

.toolbar::-webkit-scrollbar {
  height: 6px;
}

.toolbar::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 3px;
}

.toolbar::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
  opacity: 0.5;
}

.toolbar::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
  opacity: 0.8;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  
  /* Allow groups to wrap but maintain minimum width */
  flex-wrap: wrap;
  flex-shrink: 0;
  
  /* Prevent groups from becoming too small */
  min-width: 0;
}

.toolbar-separator {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 0.5rem;
}

.toolbar-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  width: auto;
  height: auto;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  
  /* Prevent shrinking but allow growing */
  flex-shrink: 0;
  flex-grow: 0;
  
  /* Ensure minimum touch target size for accessibility */
  min-width: 44px;
  min-height: 44px;
}

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

.toolbar-btn.active {
  background: var(--primary-color);
  color: white;
}

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

.toolbar-btn i {
  font-size: 14px;
}

.toolbar-select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--background);
  color: var(--text-primary);
  font-size: 14px;
  min-width: 120px;
  transition: var(--transition);
}

.toolbar-select:hover {
  border-color: var(--primary-color);
}

.toolbar-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.toolbar-color {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  padding: 2px;
}

.toolbar-color:hover {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.toolbar-color::-webkit-color-swatch-wrapper {
  padding: 0;
}

.toolbar-color::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.toolbar-btn[title]:hover::after {
  content: attr(title);
  position: absolute;
  bottom: -32px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--background);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  white-space: nowrap;
  z-index: 1000;
  pointer-events: none;
}

/* ===== MAIN CONTENT ===== */
.app-main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: 280px;
  max-width: 280px;
  min-width: 200px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  
  /* Allow shrinking on small screens */
  flex-shrink: 1;
}

.sidebar-section {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-section h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.document-list, .recent-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.document-item, .recent-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.document-item:hover, .recent-item:hover {
  background: var(--border);
}

.document-item.active {
  background: var(--primary-color);
  color: white;
}

.document-item i, .recent-item i {
  font-size: 1rem;
  color: var(--text-muted);
}

.document-item.active i {
  color: white;
}

.storage-info {
  margin-top: 1rem;
}

.storage-bar {
  width: 100%;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.storage-used {
  height: 100%;
  width: 20%;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

/* ===== EDITOR CONTAINER ===== */
.editor-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  
  /* Ensure responsive width */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  
  /* Prevent horizontal overflow */
  overflow-x: hidden;
  overflow-y: auto;
}

.drop-zone {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(37, 99, 235, 0.1);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  transition: var(--transition);
}

.drop-zone.hidden {
  opacity: 0;
  visibility: hidden;
}

.drop-content {
  text-align: center;
  max-width: 400px;
  padding: 2rem;
  background: var(--surface);
  border-radius: 20px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.drop-content i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.drop-content h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.drop-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* ===== EDITOR ===== */
.editor-page {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.editor-layout {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.editor-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--md-sys-color-surface-variant);
  padding: 1.5rem;
  position: relative;
  
  /* Responsive fixes */
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  
  /* Professional container layout */
  max-width: var(--container-max);
  margin: 0 auto;
}

.editor-header {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.toolbar-wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.editor-main {
  display: flex;
  width: 100%;
  min-width: 0;
  flex: 1;
  overflow: hidden;
}

.editor-content {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  box-sizing: border-box;
}

.ruler {
  height: 30px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: relative;
  margin-bottom: 1px;
}

.ruler-marks {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border);
  transform: translateY(-50%);
}

.editor {
  flex: 1;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-size: 16px;
  line-height: 1.6;
  overflow-y: auto;
  outline: none;
  white-space: pre-wrap;
  word-wrap: break-word;
  word-break: break-word;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-lg);
  position: relative;
  min-height: 600px;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .editor {
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
}

[data-theme="dark"] .editor-wrapper {
  background: var(--md-sys-color-surface-variant);
}

.editor:focus {
  background: var(--md-sys-color-surface);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--md-sys-color-primary);
}

[data-theme="dark"] .editor:focus {
  background: var(--md-sys-color-surface);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--md-sys-color-primary);
}

.editor p {
  margin-bottom: 1rem;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.editor p:last-child {
  margin-bottom: 0;
}

/* Ensure all text elements wrap properly */
.editor div,
.editor span,
.editor h1,
.editor h2,
.editor h3,
.editor h4,
.editor h5,
.editor h6 {
  word-wrap: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
}

/* ===== MULTI-PAGE EDITOR ===== */

/* Override legacy .editor styles when in multi-page mode */
.editor.nova-pages-container {
  max-width: none;
  margin: 0;
  padding: 1.5rem 1rem;
  border-radius: 0;
  box-shadow: none;
  background: var(--md-sys-color-surface-variant);
}

/* Page Navigation Toolbar */
.page-nav-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-surface-container);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  gap: 0.5rem;
  flex-shrink: 0;
  min-height: 44px;
}

.page-nav-left,
.page-nav-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-nav-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface-variant);
  min-width: 90px;
  text-align: center;
  user-select: none;
}

.page-nav-btn {
  min-width: 36px;
  min-height: 36px;
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
  gap: 0.25rem;
}

/* Multi-page container */
.nova-pages-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  gap: 1.5rem;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  background: var(--md-sys-color-surface-variant);
  min-height: 0;
}

[data-theme="dark"] .nova-pages-container {
  background: #121214;
}

/* Individual page */
.nova-page {
  --page-width-mm: 210;
  --page-height-mm: 297;
  --page-margin-top: 20mm;
  --page-margin-right: 20mm;
  --page-margin-bottom: 20mm;
  --page-margin-left: 20mm;
  --page-zoom: 1;

  position: relative;
  width: calc(var(--page-width-mm) * 1mm * var(--page-zoom));
  min-height: calc(var(--page-height-mm) * 1mm * var(--page-zoom));
  max-width: 100%;

  background: white;
  color: #1a1a1a;
  border-radius: 4px;

  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.08),
    0 1px 3px rgba(0, 0, 0, 0.06);

  outline: none;
  cursor: text;
  box-sizing: border-box;

  /* Prevent focus ring from looking odd */
  border: 1px solid transparent;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.nova-page:focus {
  border-color: var(--md-sys-color-primary);
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.1),
    0 0 0 2px var(--md-sys-color-primary-container);
}

/* Page inner content area (margins) */
.nova-page-inner {
  padding:
    var(--page-margin-top)
    var(--page-margin-right)
    var(--page-margin-bottom)
    var(--page-margin-left);
  min-height: calc(var(--page-height-mm) * 1mm * var(--page-zoom)
    - var(--page-margin-top)
    - var(--page-margin-bottom));
  max-height: calc(var(--page-height-mm) * 1mm * var(--page-zoom)
    - var(--page-margin-top)
    - var(--page-margin-bottom));
  overflow: hidden;
  box-sizing: border-box;
}

.nova-page-inner p {
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

.nova-page-inner p:last-child {
  margin-bottom: 0;
}

/* Page footer with page number */
.nova-page-footer {
  position: absolute;
  bottom: 8mm;
  left: 0;
  right: 0;
  text-align: center;
  pointer-events: none;
  user-select: none;
}

.nova-page-number {
  font-size: 0.75rem;
  color: #888;
  font-variant-numeric: tabular-nums;
}

/* Page break marker (invisible, for import/export) */
.nova-page-break {
  break-after: page;
  page-break-after: always;
  height: 0;
  margin: 0;
  padding: 0;
  border: none;
  display: block;
}

/* Web Layout Mode: pages stretch full width */
.nova-web-mode .nova-page,
.nova-page.nova-web-layout {
  width: 100%;
  max-width: 900px;
  min-height: auto;
  box-shadow: none;
  border: 1px solid var(--md-sys-color-outline-variant);
}

.nova-web-mode .nova-page-inner,
.nova-page.nova-web-layout .nova-page-inner {
  max-height: none;
  min-height: 200px;
}

/* Print Layout Mode: fixed A4 size (inherits default mm sizing above) */
.nova-print-mode .nova-page {
  box-sizing: border-box;
}

/* Dark theme pages */
[data-theme="dark"] .nova-page {
  background: #1c1b1f;
  color: #e6e1e5;
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.25),
    0 1px 3px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .nova-page:focus {
  border-color: var(--md-sys-color-primary);
}

[data-theme="dark"] .nova-page-number {
  color: #666;
}

/* ===== RESPONSIVE MULTI-PAGE ===== */

@media (max-width: 900px) {
  .nova-page {
    width: 100% !important;
    max-width: 100% !important;
    min-height: auto !important;
    border-radius: 0;
  }

  .nova-page-inner {
    max-height: none !important;
    min-height: 150px !important;
    padding: 1rem !important;
  }

  .nova-pages-container {
    padding: 0.5rem;
    gap: 0.75rem;
  }

  .page-nav-toolbar {
    padding: 0.5rem;
  }

  .page-nav-label {
    font-size: 0.8rem;
    min-width: 70px;
  }

  .page-nav-btn {
    min-width: 32px;
    min-height: 32px;
    padding: 0.2rem 0.4rem;
  }
}

@media print {
  .nova-pages-container {
    background: white !important;
    padding: 0 !important;
    gap: 0 !important;
  }

  .nova-page {
    box-shadow: none !important;
    border: none !important;
    border-radius: 0 !important;
    width: 100% !important;
    page-break-after: always;
    break-after: page;
  }

  .nova-page:last-child {
    page-break-after: auto;
    break-after: auto;
  }

  .nova-page-footer {
    display: block !important;
  }

  .page-nav-toolbar,
  .toolbar,
  .floating-toolbar,
  .mobile-toolbar,
  .sidebar,
  .status-bar {
    display: none !important;
  }
}

/* Table styling */
.editor table {
  max-width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  word-wrap: break-word;
}

.editor td,
.editor th {
  padding: 8px 12px;
  border: 1px solid #ddd;
  word-wrap: break-word;
  max-width: 200px;
}

/* Image styling */
.editor img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem auto;
}

/* Link styling */
.editor a {
  color: var(--primary-color);
  text-decoration: underline;
  word-break: break-all;
}

/* List styling */
.editor ul,
.editor ol {
  margin: 1rem 0;
  padding-left: 2rem;
}

.editor li {
  margin-bottom: 0.5rem;
  word-wrap: break-word;
}

/* ===== STATUS BAR ===== */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.5rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.status-left, .status-center, .status-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.separator {
  color: var(--border);
}

#saveStatus {
  color: var(--success-color);
  font-weight: 500;
}

#saveStatus.saving {
  color: var(--warning-color);
}

#saveStatus.error {
  color: var(--error-color);
}

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

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

.modal-content {
  background: var(--surface);
  border-radius: 20px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--border);
  color: var(--text-primary);
}

.modal-body {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  padding: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ===== FORM ELEMENTS ===== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group label input[type="checkbox"] {
  margin-right: 0.5rem;
  margin-bottom: 0;
}

/* ===== BUTTONS ===== */
.btn-primary {
  background: var(--primary-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
  background: var(--border);
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: var(--text-muted);
  color: white;
}

/* ===== FLOATING TOOLBAR ===== */
.floating-toolbar {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  padding: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 1000;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  pointer-events: none;
}

.floating-toolbar:not(.hidden) {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.floating-toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: var(--transition);
  background: transparent;
  border: none;
  cursor: pointer;
}

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

.floating-btn.active {
  background: var(--primary-color);
  color: white;
}

.floating-btn i {
  font-size: 12px;
}

/* ===== MOBILE TOOLBAR ===== */
.mobile-toolbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1000;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.mobile-toolbar:not(.hidden) {
  transform: translateY(0);
}

.mobile-toolbar-group {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 0.5rem;
}

.mobile-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: var(--transition);
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 0.25rem;
}

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

.mobile-btn.active {
  background: var(--primary-color);
  color: white;
}

.mobile-btn i {
  font-size: 16px;
}

.mobile-btn span {
  font-size: 10px;
  font-weight: 500;
}

/* ===== OFFICE HUB DASHBOARD ===== */
.office-hub {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--background);
  color: var(--text-primary);
}

.hub-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem clamp(1rem, 2vw, 2rem);
  width: 100%;
  box-sizing: border-box;
}

.hub-main {
  flex: 1;
  padding: 1.5rem clamp(1rem, 2vw, 2rem);
  width: 100%;
  box-sizing: border-box;
}

.hub-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--md-sys-color-primary);
}

.brand-logo i {
  font-size: 2rem;
}

.brand-tagline {
  font-size: 0.875rem;
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 500;
}

.hub-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-btn {
  width: 48px;
  height: 48px;
  border: none;
  background: transparent;
  color: var(--md-sys-color-on-surface);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.icon-btn:hover {
  background: var(--md-sys-color-surface-variant);
}

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

.hub-main {
  flex: 1;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.welcome-section {
  text-align: center;
  margin-bottom: 3rem;
}

.welcome-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--md-sys-color-on-background);
  margin-bottom: 0.5rem;
}

.welcome-subtitle {
  font-size: clamp(0.85rem, 2vw, 1.125rem);
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 400;
  margin-bottom: 2rem;
}

.app-grid {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 3rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 1rem 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline) transparent;
}

.app-grid::-webkit-scrollbar {
  height: 8px;
}

.app-grid::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 4px;
}

.app-grid::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
  opacity: 0.5;
}

.app-grid::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
  opacity: 0.8;
}

/* Scroll indicators */
.app-grid-container {
  position: relative;
}

.scroll-indicator {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.scroll-indicator:hover {
  background: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-50%) scale(1.1);
}

.scroll-indicator:hover i {
  color: var(--md-sys-color-on-primary);
}

.scroll-indicator.prev {
  left: -24px;
}

.scroll-indicator.next {
  right: -24px;
}

.scroll-indicator.hidden {
  opacity: 0;
  pointer-events: none;
}

.scroll-indicator i {
  color: var(--md-sys-color-on-surface);
  font-size: 1.2rem;
}

.scroll-indicator:hover i {
  color: var(--md-sys-color-primary);
}

.app-card {
  background: var(--md-sys-color-surface);
  border-radius: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--md-sys-color-outline-variant);
  cursor: pointer;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  position: relative;
  min-width: clamp(240px, 30vw, 320px);
  max-width: clamp(240px, 30vw, 320px);
  flex-shrink: 0;
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  border-color: var(--md-sys-color-primary);
}

.app-card:active {
  transform: translateY(-2px);
}

.app-card.is-loading {
  pointer-events: none;
  opacity: 0.72;
}

.card-content {
  padding: clamp(1.25rem, 2vw, 2rem);
  display: flex;
  align-items: center;
  gap: clamp(1rem, 1.5vw, 1.5rem);
}

.card-icon {
  width: clamp(48px, 5vw, 64px);
  height: clamp(48px, 5vw, 64px);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.25rem, 1.8vw, 1.75rem);
  color: white;
  flex-shrink: 0;
}

.word-icon {
  background: linear-gradient(135deg, #2b579a, #1e3a8a);
}

.excel-icon {
  background: linear-gradient(135deg, #217346, #107c41);
}

.powerpoint-icon {
  background: linear-gradient(135deg, #c43e1c, #d24726);
}

.access-icon {
  background: linear-gradient(135deg, #7c4a1e, #a0522d);
}

.onenote-icon {
  background: linear-gradient(135deg, #7e328f, #9b4fae);
}

.files-icon {
  background: linear-gradient(135deg, #6264a7, #5b5fc7);
}

.card-info {
  flex: 1;
}

.card-title {
  font-size: clamp(1.1rem, 1.4vw, 1.5rem);
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.5rem;
}

.card-description {
  font-size: clamp(0.8rem, 1vw, 0.875rem);
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.4;
}

.card-arrow {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 1.25rem;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.app-card:hover .card-arrow {
  color: var(--md-sys-color-primary);
  transform: translateX(4px);
}

.card-footer {
  padding: clamp(0.75rem, 1.2vw, 1rem) clamp(1.25rem, 1.8vw, 2rem);
  background: var(--md-sys-color-surface-variant);
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.recent-count {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 500;
}

.recent-section {
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--md-sys-color-on-background);
  margin-bottom: 1.5rem;
}

.recent-files-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--md-sys-color-surface);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  z-index: 1000;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 60px;
}

.nav-item:hover {
  background: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface);
}

.nav-item.active {
  color: var(--md-sys-color-primary);
  background: var(--md-sys-color-primary-container);
}

.nav-item i {
  font-size: 1.25rem;
}

.nav-item span {
  font-size: 0.75rem;
  font-weight: 500;
}

.hub-panel {
  margin-bottom: 2rem;
}

.hub-panel-card {
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
}

.hub-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hub-panel-description {
  color: var(--md-sys-color-on-surface-variant);
}

.hub-panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.hub-file-card {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--md-sys-color-outline-variant);
  background: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  text-align: left;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.hub-file-card:hover {
  transform: translateY(-2px);
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.hub-file-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-primary);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.hub-file-info {
  flex: 1;
}

.hub-file-open {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--md-sys-color-primary);
}

.hub-empty-state {
  display: grid;
  place-items: center;
  gap: 0.5rem;
  min-height: 180px;
  padding: 2rem;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
  border: 1px dashed var(--md-sys-color-outline);
  border-radius: var(--radius-lg);
}

.hub-empty-state i {
  font-size: 2rem;
  color: var(--md-sys-color-primary);
}

.workspace-nav {
  position: fixed;
  top: 50%;
  left: 1rem;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.75rem;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(0, 0, 0, 0.08);
  z-index: 1500;
}

.workspace-nav-item {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  min-width: 64px;
  padding: 0.85rem 0.75rem;
  border-radius: 18px;
  color: var(--text-secondary);
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.workspace-nav-item:hover,
.workspace-nav-item.active {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-primary);
}

.workspace-nav-item span {
  font-size: 0.72rem;
  font-weight: 600;
}

.workspace-active .app-container:not(.hidden) {
  padding-left: 96px;
}

.workspace-title-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem 0.25rem;
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.workspace-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.workspace-title-group i {
  font-size: 1.25rem;
  color: var(--md-sys-color-primary);
}

.workspace-title-input {
  min-width: 240px;
  border: none;
  background: transparent;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 0.35rem 0.5rem;
}

.workspace-title-input:focus {
  background: var(--md-sys-color-surface-variant);
  box-shadow: none;
}

.workspace-title-subtitle {
  font-size: 0.82rem;
  color: var(--md-sys-color-on-surface-variant);
}

.breadcrumb-link {
  background: transparent;
  color: var(--md-sys-color-primary);
  font-weight: 600;
  padding: 0;
}

.breadcrumb-link:hover {
  text-decoration: underline;
}

.breadcrumb-separator {
  margin: 0 0.5rem;
  color: var(--md-sys-color-on-surface-variant);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.settings-action-card {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  width: 100%;
  padding: 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--md-sys-color-outline-variant);
  background: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  text-align: left;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.settings-action-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border-color: var(--md-sys-color-primary);
}

.settings-action-card i {
  font-size: 1.2rem;
  color: var(--md-sys-color-primary);
  margin-top: 0.1rem;
}

.settings-action-card p {
  color: var(--md-sys-color-on-surface-variant);
  margin-top: 0.2rem;
}

.hub-shortcuts {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.hub-shortcuts h3 {
  margin-bottom: 0.5rem;
}

.tap-ripple {
  position: absolute;
  border-radius: 999px;
  background: rgba(103, 80, 164, 0.18);
  transform: scale(0);
  animation: ripple 0.55s ease-out;
  pointer-events: none;
}

@keyframes ripple {
  to {
    opacity: 0;
    transform: scale(2.75);
  }
}

/* ===== EXCEL MODE STYLES ===== */
.excel-header {
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  padding: 0;
}

.excel-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  
  /* Responsive width and overflow */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  
  /* Horizontal scroll for overflow */
  overflow-x: auto;
  overflow-y: hidden;
  
  /* Prevent items from shrinking below usable size */
  flex-shrink: 0;
  
  /* Custom scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline) transparent;
}

.excel-toolbar::-webkit-scrollbar {
  height: 6px;
}

.excel-toolbar::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 3px;
}

.excel-toolbar::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
  opacity: 0.5;
}

.excel-toolbar::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
  opacity: 0.8;
}

.formula-bar {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-surface-variant);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  gap: 0.5rem;
}

.cell-reference {
  min-width: 60px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.875rem;
  text-align: center;
  background: var(--md-sys-color-primary-container);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--md-sys-color-on-primary-container);
}

#formulaInput {
  flex: 1;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
}

.formula-btn {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border: none;
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.formula-btn:hover {
  background: var(--primary-hover);
}

.excel-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* Luckysheet Container Styling */
.luckysheet-container {
  flex: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--md-sys-color-surface);
}

/* Ensure Luckysheet fills the container */
.luckysheet-container #luckysheet {
  width: 100% !important;
  height: 100% !important;
}

.excel-container {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

.column-headers {
  display: flex;
  background: var(--md-sys-color-surface-variant);
  border-bottom: 1px solid var(--md-sys-color-outline);
  position: sticky;
  top: 0;
  z-index: 10;
}

.corner-cell {
  width: 40px;
  height: 25px;
  background: var(--md-sys-color-surface-variant);
  border: 1px solid var(--md-sys-color-outline);
  border-right: none;
  border-bottom: none;
}

.column-header {
  width: 100px;
  min-width: 60px;
  max-width: 120px;
  height: 25px;
  background: var(--md-sys-color-surface-variant);
  border: 1px solid var(--md-sys-color-outline);
  border-bottom: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  transition: var(--transition-quick);
  
  /* Allow shrinking on small screens */
  flex-shrink: 1;
}

.column-header:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.grid-container {
  flex: 1;
  display: flex;
  overflow: auto;
  position: relative;
}

.row-headers {
  background: var(--md-sys-color-surface-variant);
  border: 1px solid var(--md-sys-color-outline);
  border-right: none;
  position: sticky;
  left: 0;
  z-index: 5;
}

.row-header {
  width: 40px;
  min-width: 30px;
  max-width: 50px;
  height: 25px;
  background: var(--md-sys-color-surface-variant);
  border: 1px solid var(--md-sys-color-outline);
  border-right: none;
  border-top: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  transition: var(--transition-quick);
  
  /* Allow shrinking on small screens */
  flex-shrink: 1;
}

.row-header:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.excel-grid {
  position: relative;
  background: white;
  transform-origin: top left;
  transition: transform 0.2s ease;
}

.excel-cell {
  position: absolute;
  background: white;
  color: var(--md-sys-color-on-background);
  font-size: 0.875rem;
  font-family: var(--font-family);
  user-select: none;
  transition: var(--transition-quick);
}

.excel-cell:hover {
  background: var(--md-sys-color-surface-variant);
}

.excel-cell.selected {
  background: var(--md-sys-color-primary-container) !important;
  color: var(--md-sys-color-on-primary-container) !important;
  border: 2px solid var(--md-sys-color-primary) !important;
  z-index: 2;
}

.cell-edit-input {
  position: absolute;
  z-index: 1000;
  font-family: var(--font-family);
  font-size: 0.875rem;
  border: 2px solid var(--md-sys-color-primary);
  outline: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.excel-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-surface);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  font-size: 0.875rem;
  color: var(--md-sys-color-on-surface-variant);
}

.status-left,
.status-center,
.status-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.zoom-indicator {
  background: var(--md-sys-color-surface-variant);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  min-width: 50px;
  text-align: center;
}

/* ===== ACCESS MODE STYLES ===== */
.access-header,
.note-header {
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  padding: 0;
  flex-shrink: 0;
}

.access-toolbar,
.note-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  overflow-x: auto;
  overflow-y: hidden;
  min-height: 52px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.access-main,
.note-main {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.access-sidebar,
.note-sidebar {
  width: 260px;
  min-width: 200px;
  max-width: 320px;
  background: var(--md-sys-color-surface-container);
  border-right: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.sidebar-header h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: var(--md-sys-color-on-surface);
}

.sidebar-list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.5rem;
}

.sidebar-item {
  display: flex;
  flex-direction: column;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-quick);
  margin-bottom: 0.25rem;
  color: var(--md-sys-color-on-surface);
}

.sidebar-item:hover {
  background: var(--md-sys-color-surface-variant);
}

.sidebar-item.active {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.sidebar-item .item-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-item .item-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-primary);
  flex-shrink: 0;
}

.sidebar-item.active .item-icon {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.sidebar-item .item-info {
  flex: 1;
  min-width: 0;
}

.sidebar-item .item-name {
  font-weight: 500;
  font-size: 0.875rem;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-item .item-meta {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  display: block;
}

.sidebar-item.active .item-meta {
  color: var(--md-sys-color-on-primary-container);
  opacity: 0.8;
}

.nested-list {
  margin-left: 1rem;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nested-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: var(--transition-quick);
}

.nested-item:hover {
  background: var(--md-sys-color-surface-variant);
}

.nested-item.active {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.access-content,
.note-content {
  flex: 1;
  overflow: auto;
  padding: 1rem;
  background: var(--md-sys-color-surface);
}

.content-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--md-sys-color-on-surface-variant);
  text-align: center;
  gap: 1rem;
}

.content-placeholder i {
  font-size: 3rem;
  opacity: 0.5;
}

.content-placeholder h3 {
  margin: 0;
  color: var(--md-sys-color-on-surface);
}

.content-placeholder p {
  margin: 0;
  max-width: 300px;
}

/* Data Table Styles */
.data-table-wrapper {
  overflow: auto;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-lg);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.data-table th {
  background: var(--md-sys-color-surface-variant);
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
  white-space: nowrap;
}

.data-table th.sortable {
  cursor: pointer;
  user-select: none;
}

.data-table th.sorted-asc .sort-icon,
.data-table th.sorted-desc .sort-icon {
  color: var(--md-sys-color-primary);
}

.data-table td {
  color: var(--md-sys-color-on-surface);
}

.data-table tr:hover td {
  background: var(--md-sys-color-surface-variant);
}

.data-table .row-number {
  width: 40px;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.75rem;
}

.data-table .actions-col {
  width: 80px;
  text-align: center;
}

.data-table .empty-row {
  text-align: center;
  padding: 2rem;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--md-sys-color-on-surface-variant);
}

.empty-state i {
  font-size: 2rem;
}

/* Form View Styles */
.form-view {
  max-width: 600px;
  margin: 0 auto;
}

.form-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
}

.form-card {
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 0.5rem;
}

.form-field .form-value {
  font-size: 1rem;
  color: var(--md-sys-color-on-surface);
  padding: 0.75rem;
  background: var(--md-sys-color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--md-sys-color-outline-variant);
}

/* Note Editor Styles */
.note-editor-container {
  max-width: 800px;
  margin: 0 auto;
}

.page-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.page-title-input {
  width: 100%;
  font-size: 1.75rem;
  font-weight: 700;
  border: none;
  outline: none;
  background: transparent;
  color: var(--md-sys-color-on-surface);
  padding: 0.25rem 0;
  margin-bottom: 0.5rem;
}

.page-title-input::placeholder {
  color: var(--md-sys-color-on-surface-variant);
  opacity: 0.6;
}

.page-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
}

.note-editor {
  min-height: 500px;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--md-sys-color-on-surface);
  outline: none;
}

.note-editor p {
  margin: 0 0 1rem 0;
}

.note-editor h1,
.note-editor h2,
.note-editor h3 {
  margin: 1.5rem 0 0.75rem 0;
  color: var(--md-sys-color-on-surface);
}

.note-editor ul,
.note-editor ol {
  margin: 0 0 1rem 0;
  padding-left: 1.5rem;
}

.note-editor pre.code-block {
  background: var(--md-sys-color-surface-variant);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-md);
  padding: 1rem;
  overflow-x: auto;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.875rem;
  margin: 0 0 1rem 0;
}

.note-editor table.note-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1rem 0;
}

.note-editor table.note-table td {
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 0.5rem;
  min-width: 80px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.5rem 0;
  padding: 0.25rem 0;
}

.checklist-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--md-sys-color-primary);
}

.note-editor img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 0 0 1rem 0;
}

/* Table Tabs */
.table-tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0.5rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  overflow-x: auto;
  flex-wrap: nowrap;
}

.table-tab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  font-size: 0.875rem;
  white-space: nowrap;
  transition: var(--transition-quick);
}

.table-tab:hover {
  background: var(--md-sys-color-surface-variant);
}

.table-tab.active {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.table-tab.add-tab {
  color: var(--md-sys-color-primary);
}

.table-actions {
  display: flex;
  gap: 0.5rem;
  padding: 1rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  flex-wrap: wrap;
}

/* Sidebar Empty State */
.sidebar-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
  text-align: center;
  gap: 1rem;
  color: var(--md-sys-color-on-surface-variant);
}

.sidebar-empty i {
  font-size: 2rem;
  opacity: 0.5;
}

.sidebar-empty p {
  margin: 0;
  font-size: 0.875rem;
}

/* Null Value */
.null-value {
  color: var(--md-sys-color-outline);
  font-style: italic;
}

.number-value {
  font-variant-numeric: tabular-nums;
  font-family: 'Roboto Mono', monospace;
}

.date-value {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.8125rem;
}

.select-value {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

/* Col Type Badge */
.col-type {
  display: block;
  font-size: 0.625rem;
  text-transform: uppercase;
  color: var(--md-sys-color-on-surface-variant);
  opacity: 0.6;
  font-weight: 500;
}

/* ===== RESPONSIVE ACCESS & ONENOTE ===== */
@media (max-width: 768px) {
  .access-sidebar,
  .note-sidebar {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    width: 280px;
    box-shadow: var(--shadow-3);
  }

  .access-sidebar.open,
  .note-sidebar.open {
    transform: translateX(0);
  }

  .access-main,
  .note-main {
    position: relative;
  }

  .data-table-wrapper {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .form-card {
    padding: 1rem;
  }

  .note-editor-container {
    padding: 0;
  }
}

/* File Card Styles */
.file-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--md-sys-color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--md-sys-color-outline-variant);
  cursor: pointer;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.file-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border-color: var(--md-sys-color-primary);
}

.file-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-size: 1.25rem;
}

.file-info {
  flex: 1;
}

.file-name {
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
}

.file-meta {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  background: var(--md-sys-color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  color: var(--md-sys-color-on-surface);
}

.loading-spinner i {
  font-size: 2rem;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Notification Styles */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 300px;
  z-index: 10001;
  animation: slideInRight 0.3s ease-out;
}

.notification-success {
  border-left: 4px solid var(--success-color);
}

.notification-error {
  border-left: 4px solid var(--error-color);
}

.notification-info {
  border-left: 4px solid var(--primary-color);
}

.notification-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-quick);
}

.notification-close:hover {
  background: var(--md-sys-color-surface-variant);
}

/* ===== EXPORT LOADING & ERROR STYLES ===== */
#exportLoadingOverlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease-out;
}

#exportLoadingOverlay > div {
  background: var(--md-sys-color-surface);
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  text-align: center;
  max-width: 400px;
  border: 1px solid var(--md-sys-color-outline-variant);
}

#exportLoadingOverlay .export-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--md-sys-color-surface-variant);
  border-top-color: var(--md-sys-color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

#exportLoadingOverlay h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  color: var(--md-sys-color-on-surface);
  font-family: var(--font-display);
}

#exportLoadingOverlay p {
  margin: 0;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.9rem;
}

.export-error-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--md-sys-color-error-container);
  border: 1px solid var(--md-sys-color-error);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  z-index: 10001;
  max-width: 400px;
  animation: slideInRight 0.3s ease-out;
}

.export-error-notification h4 {
  margin: 0 0 0.5rem;
  color: var(--md-sys-color-on-error-container);
  font-size: 1rem;
  font-family: var(--font-display);
}

.export-error-notification p {
  margin: 0;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.875rem;
}

.export-error-notification button {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.export-error-notification button:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  transform: translateY(-1px);
}

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

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

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

/* ===== POWERPOINT MODE STYLES ===== */
.ppt-header {
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  padding: 0;
}

.ppt-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  
  /* Responsive width and overflow */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  
  /* Horizontal scroll for overflow */
  overflow-x: auto;
  overflow-y: hidden;
  
  /* Prevent items from shrinking below usable size */
  flex-shrink: 0;
  
  /* Custom scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline) transparent;
}

.ppt-toolbar::-webkit-scrollbar {
  height: 6px;
}

.ppt-toolbar::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 3px;
}

.ppt-toolbar::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
  opacity: 0.5;
}

.ppt-toolbar::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
  opacity: 0.8;
}

.present-btn {
  background: var(--success-color);
  color: white;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
}

.present-btn:hover {
  background: #059669;
  transform: translateY(-1px);
}

.ppt-main {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.slide-thumbnails {
  width: 200px;
  max-width: 200px;
  min-width: 150px;
  background: var(--md-sys-color-surface-variant);
  border-right: 1px solid var(--md-sys-color-outline);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  
  /* Allow shrinking on small screens */
  flex-shrink: 1;
}

.thumbnails-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--md-sys-color-outline);
  background: var(--md-sys-color-surface);
}

.thumbnails-header h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin: 0;
}

.add-slide-btn {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border: none;
  border-radius: var(--radius-sm);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.add-slide-btn:hover {
  background: var(--primary-hover);
}

.thumbnails-container {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.slide-thumbnail {
  position: relative;
  cursor: pointer;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-thumbnail:hover {
  border-color: var(--md-sys-color-primary);
  transform: scale(1.02);
}

.slide-thumbnail.active {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 2px var(--md-sys-color-primary);
}

.thumbnail-canvas {
  position: relative;
  width: 160px;
  height: 90px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.thumbnail-number {
  position: absolute;
  top: 4px;
  left: 4px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}

.slide-editor {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.slide-canvas-container {
  flex: 1;
  overflow: auto;
  background: #f5f5f5;
  
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.slide-canvas {
  width: 960px;
  max-width: 100%;
  height: 540px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
  transform-origin: top left;
  transition: transform 0.2s ease;
  
  /* Ensure responsive behavior */
  min-width: 0;
  box-sizing: border-box;
}

/* Slide Objects */
.slide-text-object {
  outline: none;
  border: 1px dashed transparent;
  border-radius: var(--radius-sm);
  transition: var(--transition-quick);
}

.slide-text-object:focus {
  border-color: var(--md-sys-color-primary);
}

.slide-image-object {
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition-quick);
}

.slide-shape-object {
  transition: var(--transition-quick);
}

.shape-rectangle {
  border-radius: var(--radius-md);
}

.shape-circle {
  border-radius: 50%;
}

.slide-object-selected {
  border: 2px solid var(--md-sys-color-primary) !important;
  box-shadow: 0 0 0 2px rgba(103, 80, 164, 0.3);
}

/* Presentation Mode */
.presentation-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: black;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.presentation-container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.presentation-slide {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.presentation-controls {
  position: absolute;
  bottom: 2rem;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.control-btn {
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: var(--transition-quick);
  font-size: 0.875rem;
}

.control-btn:hover {
  background: rgba(0, 0, 0, 0.9);
  transform: translateY(-1px);
}

.slide-counter {
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
}

.ppt-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-surface);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  font-size: 0.875rem;
  color: var(--md-sys-color-on-surface-variant);
}

/* ===== FILE MANAGER MODE STYLES ===== */
.file-manager-header {
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  padding: 0;
}

.file-manager-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  
  /* Responsive width and overflow */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  
  /* Horizontal scroll for overflow */
  overflow-x: auto;
  overflow-y: hidden;
  
  /* Prevent items from shrinking below usable size */
  flex-shrink: 0;
  
  /* Custom scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline) transparent;
}

.file-manager-toolbar::-webkit-scrollbar {
  height: 6px;
}

.file-manager-toolbar::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 3px;
}

.file-manager-toolbar::-webkit-scrollbar-thumb {
  background: var(--md-sys-color-outline);
  border-radius: 3px;
}

.file-manager-toolbar::-webkit-scrollbar-thumb:hover {
  background: var(--md-sys-color-on-surface-variant);
}

.toolbar-select {
  background: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-quick);
}

.toolbar-select:hover {
  border-color: var(--md-sys-color-primary);
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--md-sys-color-surface-variant);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  min-width: 250px;
  transition: var(--transition-quick);
}

.search-box:hover {
  border-color: var(--md-sys-color-primary);
}

.search-box i {
  color: var(--md-sys-color-on-surface-variant);
  margin-right: 0.5rem;
}

.search-box input {
  background: none;
  border: none;
  outline: none;
  color: var(--md-sys-color-on-surface);
  font-size: 0.875rem;
  flex: 1;
}

.file-manager-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: var(--md-sys-color-surface-variant);
  border-bottom: 1px solid var(--md-sys-color-outline);
  gap: 0.5rem;
  font-size: 0.875rem;
}

.breadcrumb-nav a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
  transition: var(--transition-quick);
}

.breadcrumb-nav a:hover {
  text-decoration: underline;
}

.breadcrumb-nav .separator {
  color: var(--md-sys-color-on-surface-variant);
}

.file-container {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  background: var(--md-sys-color-background);
}

.file-container.grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.file-container.list-view {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Grid View File Cards */
.file-card {
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-md);
  padding: 1rem;
  cursor: pointer;
  transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.file-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border-color: var(--md-sys-color-primary);
}

.file-card-checkbox {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
}

.file-card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  font-size: 2rem;
}

.file-card-info {
  flex: 1;
  width: 100%;
}

.file-card .file-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-card .file-meta {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  margin: 0;
}

.file-card-actions {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.25rem;
  opacity: 0;
  transition: var(--transition-quick);
}

.file-card:hover .file-card-actions {
  opacity: 1;
}

/* List View File Items */
.file-list-item {
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: var(--transition-quick);
}

.file-list-item:hover {
  background: var(--md-sys-color-surface-variant);
  border-color: var(--md-sys-color-primary);
}

.file-item-checkbox {
  flex-shrink: 0;
}

.file-item-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.file-item-details {
  flex: 1;
  min-width: 0;
}

.file-item-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-item-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
}

.file-item-actions {
  display: flex;
  gap: 0.5rem;
  opacity: 0;
  transition: var(--transition-quick);
}

.file-list-item:hover .file-item-actions {
  opacity: 1;
}

/* Action Buttons */
.file-action-btn {
  background: none;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-quick);
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-action-btn:hover {
  background: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface);
}

.file-action-btn i.starred {
  color: var(--warning-color);
}

/* No Results */
.no-results {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
}

.no-results i {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.no-results h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--md-sys-color-on-surface);
}

.no-results p {
  font-size: 0.875rem;
  margin: 0;
}

.file-manager-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--md-sys-color-surface);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  font-size: 0.875rem;
  color: var(--md-sys-color-on-surface-variant);
}

/* ===== EDITOR MODE RESPONSIVE FIXES ===== */
/* Word Editor Mode */
.word-mode .editor-page,
.word-mode .editor-layout,
.word-mode .editor-wrapper,
.word-mode .editor-header,
.word-mode .toolbar-wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  box-sizing: border-box;
}

/* Excel Editor Mode */
.excel-mode .editor-page,
.excel-mode .editor-layout,
.excel-mode .editor-wrapper,
.excel-mode .editor-header,
.excel-mode .toolbar-wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.excel-mode .grid-container {
  overflow-x: auto;
  overflow-y: auto;
  min-width: 0;
}

.excel-mode .excel-grid {
  min-width: 0;
}

/* PowerPoint Editor Mode */
.ppt-mode .editor-page,
.ppt-mode .editor-layout,
.ppt-mode .editor-wrapper,
.ppt-mode .editor-header,
.ppt-mode .toolbar-wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.ppt-mode .ppt-main {
  min-width: 0;
  overflow: hidden;
}

.ppt-mode .slide-area {
  min-width: 0;
  overflow: auto;
}

/* Access Editor Mode */
.access-mode .editor-page,
.access-mode .editor-layout,
.access-mode .editor-wrapper,
.access-mode .editor-header,
.access-mode .toolbar-wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.access-mode .access-main {
  min-width: 0;
  overflow: hidden;
}

/* OneNote Editor Mode */
.onenote-mode .editor-page,
.onenote-mode .editor-layout,
.onenote-mode .editor-wrapper,
.onenote-mode .editor-header,
.onenote-mode .toolbar-wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.onenote-mode .note-main {
  min-width: 0;
  overflow: hidden;
}

/* ===== ZOOM LEVEL FIXES ===== */
/* Fix for 25% browser zoom */
@media (max-resolution: 120dpi) {
  .toolbar,
  .excel-toolbar,
  .access-toolbar,
  .note-toolbar,
  .ppt-toolbar,
  .file-manager-toolbar {
    min-height: 60px;
    gap: 4px;
  }
  
  .toolbar-btn {
    min-width: 32px;
    min-height: 32px;
    padding: 0.25rem;
  }
  
  .toolbar > * {
    min-width: 0;
    flex-shrink: 1;
  }
  
  .toolbar > .toolbar-btn,
  .toolbar > .toolbar-separator {
    flex-shrink: 0;
  }
}

/* Universal zoom fix using transform scale detection */
body {
  transform-origin: top left;
}

/* Fix for extreme zoom levels */
@media screen and (max-width: 400px), screen and (max-height: 400px) {
  .toolbar,
  .excel-toolbar,
  .access-toolbar,
  .note-toolbar,
  .ppt-toolbar,
  .file-manager-toolbar {
    flex-wrap: wrap;
    max-height: 120px;
    overflow-y: auto;
    overflow-x: hidden;
  }
  
  .editor-wrapper {
    padding: 0.5rem;
  }
  
  .slide-thumbnails {
    width: 150px;
    min-width: 120px;
  }
  
  .column-header {
    width: 60px;
    min-width: 40px;
  }
  
  .row-header {
    width: 30px;
    min-width: 25px;
  }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .workspace-nav {
    top: auto;
    bottom: 0.75rem;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    flex-direction: row;
    width: calc(100% - 1.5rem);
    justify-content: space-between;
    border-radius: 20px;
  }

  .workspace-nav-item {
    flex: 1;
    min-width: 0;
  }

  .workspace-nav-item span {
    font-size: 0.68rem;
  }

  .workspace-active .app-container:not(.hidden) {
    padding-left: 0;
    padding-bottom: 88px;
  }

  .workspace-title-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .workspace-title-input {
    min-width: 0;
    width: 100%;
  }

  .hub-main {
    padding: 1rem 1rem 6rem;
  }

  .hub-panel-grid {
    grid-template-columns: 1fr;
  }

  /* Mobile scroll indicators */
  .scroll-indicator {
    width: 40px;
    height: 40px;
  }

  .scroll-indicator.prev {
    left: -20px;
  }

  .scroll-indicator.next {
    right: -20px;
  }

  .app-card {
    min-width: 280px;
    max-width: 280px;
  }
}

/* Tablet Responsive Design */
@media (max-width: 1024px) {
  .hub-header, .hub-main {
    padding: 2rem 2rem;
  }
  
  .welcome-title {
    font-size: 2.5rem;
  }
  
  .toolbar {
    padding: 0.5rem 0.75rem;
  }
  
  .editor-wrapper {
    padding: 2rem;
  }
  
  .editor {
    padding: 3rem 2rem;
  }
  
  .slide-thumbnails {
    width: 180px;
    max-width: 180px;
  }
  
  .thumbnail-canvas {
    width: 140px;
    height: 80px;
  }
}

/* Small Mobile Responsive Design */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  .header-left, .header-center, .header-right {
    width: 100%;
    justify-content: center;
  }
  
  .toolbar {
    flex-wrap: wrap;
    justify-content: center;
    max-height: 200px;
    overflow-y: auto;
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    gap: 0.5rem;
  }
  
  .toolbar-btn {
    min-width: 40px;
    min-height: 40px;
    padding: 0.5rem;
  }
  
  .sidebar {
    display: none;
  }
  
  .editor-wrapper {
    padding: 0.5rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .editor {
    padding: 1rem 0.75rem;
    max-width: 100%;
    width: 100%;
    min-height: auto;
    border-radius: var(--radius-sm);
    box-sizing: border-box;
  }
  
  .hub-header, .hub-main {
    padding: 1.5rem;
  }
  
  .welcome-title {
    font-size: 2rem;
  }
  
  .welcome-subtitle {
    font-size: 1rem;
  }
  
  .app-grid {
    gap: 1rem;
    padding: 0.5rem 0;
  }
  
  .app-card {
    min-width: 280px;
    max-width: 280px;
  }
  
  .card-content {
    padding: 1.5rem;
  }
  
  .status-bar {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
    padding-bottom: 6rem; /* Space for mobile toolbar */
  }
  
  .modal-content {
    width: 95%;
    margin: 1rem;
    max-height: 90vh;
    overflow-y: auto;
  }
  
  .floating-toolbar {
    display: none;
  }
  
  .slide-thumbnails {
    display: none;
  }
  
  .slide-canvas-container {
    padding: 1rem;
  }
  
  .excel-container {
    padding: 0.5rem;
  }
  
  .mobile-toolbar {
    display: flex;
  }
}

@media (max-width: 480px) {
  .workspace-nav {
    padding: 0.6rem;
  }

  .toolbar-group {
    gap: 0.125rem;
  }

  /* Extra small screen scroll indicators */
  .scroll-indicator {
    width: 36px;
    height: 36px;
  }

  .scroll-indicator.prev {
    left: -18px;
  }

  .scroll-indicator.next {
    right: -18px;
  }

  .app-card {
    min-width: 260px;
    max-width: 260px;
  }

  .hub-main {
    padding: 0.75rem 0.75rem 6rem;
  }

  /* Hide scroll indicators on very small screens to save space */
  .scroll-indicator {
    display: none;
  }

  .app-grid {
    scroll-snap-type: x mandatory;
  }

  .app-card {
    scroll-snap-align: start;
  }
  
  .toolbar-btn {
    width: 32px;
    height: 32px;
  }
  
  .toolbar-btn i {
    font-size: 12px;
  }
  
  .app-logo span {
    display: none;
  }
  
  .document-title input {
    min-width: 150px;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0, 0, 0);
  }
  40%, 43% {
    transform: translate3d(0, -30px, 0);
  }
  70% {
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0, -4px, 0);
  }
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink {
  0%, 50% {
    border-color: transparent;
  }
  51%, 100% {
    border-color: var(--primary-color);
  }
}

.fade-in {
  animation: fadeIn 0.3s ease-out;
}

.slide-in {
  animation: slideIn 0.3s ease-out;
}

.scale-in {
  animation: scaleIn 0.3s ease-out;
}

.pulse {
  animation: pulse 2s infinite;
}

.bounce {
  animation: bounce 1s ease-in-out;
}

/* Loading animations */
.loading-shimmer {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

/* Typing indicator */
.typing-indicator::after {
  content: '|';
  animation: blink 1s infinite;
  color: var(--primary-color);
  font-weight: bold;
}

/* Smooth transitions for all interactive elements */
.toolbar-btn,
.floating-btn,
.mobile-btn,
.btn-primary,
.btn-secondary,
.modal-close,
.document-item,
.recent-item {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hover effects */
.toolbar-btn:hover,
.floating-btn:hover,
.mobile-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(37, 99, 235, 0.3);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Focus effects */
.toolbar-btn:focus-visible,
.floating-btn:focus-visible,
.mobile-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  transform: scale(1.05);
}

/* Page transitions */
.app-container {
  transition: opacity 0.3s ease;
}

.app-main {
  transition: transform 0.3s ease;
}

/* Notification animations */
.notification {
  animation: slideIn 0.3s ease-out;
}

.notification.hiding {
  animation: slideOut 0.3s ease-in;
}

@keyframes slideOut {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(100%);
  }
}

/* Modal animations */
.modal {
  transition: opacity 0.3s ease;
}

.modal-content {
  animation: scaleIn 0.3s ease-out;
}

.modal.closing .modal-content {
  animation: scaleOut 0.3s ease-in;
}

@keyframes scaleOut {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(0.9);
  }
}

/* ===== UPLOAD PROGRESS ===== */
.upload-progress-content {
  max-width: 560px;
  width: 100%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.upload-progress-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.upload-progress-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.upload-progress-item {
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-lg);
  padding: 1rem;
  transition: var(--transition-quick);
}

.upload-progress-item.error {
  border-color: var(--md-sys-color-error);
  background: var(--md-sys-color-error-container);
}

.upload-progress-item.complete {
  border-color: var(--md-sys-color-primary);
  background: var(--md-sys-color-primary-container);
}

.upload-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  gap: 0.75rem;
}

.upload-item-name {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--md-sys-color-on-surface);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.upload-item-status {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
  text-transform: capitalize;
  white-space: nowrap;
  flex-shrink: 0;
}

.upload-progress-item.complete .upload-item-status {
  color: var(--md-sys-color-primary);
}

.upload-progress-item.error .upload-item-status {
  color: var(--md-sys-color-error);
}

.upload-item-bar-bg {
  height: 6px;
  background: var(--md-sys-color-surface-variant);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.375rem;
}

.upload-item-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--md-sys-color-primary), var(--md-sys-color-primary-container));
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 0%;
}

.upload-progress-item.error .upload-item-bar {
  background: var(--md-sys-color-error);
}

.upload-progress-item.complete .upload-item-bar {
  background: var(--md-sys-color-primary);
}

.upload-item-meta {
  font-size: 0.6875rem;
  color: var(--md-sys-color-on-surface-variant);
  min-height: 1rem;
}

.upload-overall-progress {
  padding-top: 0.5rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.upload-overall-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.5rem;
}

.upload-progress-bar-bg {
  height: 8px;
  background: var(--md-sys-color-surface-variant);
  border-radius: 4px;
  overflow: hidden;
}

.upload-progress-bar {
  height: 100%;
  background: var(--md-sys-color-primary);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.upload-progress-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  justify-content: center;
}

/* Upload Error Toast */
.upload-error-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 380px;
  width: calc(100% - 3rem);
  pointer-events: none;
}

.upload-error-toast {
  background: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
  border: 1px solid var(--md-sys-color-error);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  box-shadow: var(--shadow-2);
  pointer-events: auto;
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.upload-error-toast.show {
  opacity: 1;
  transform: translateX(0);
}

.upload-error-toast i {
  font-size: 1.25rem;
  color: var(--md-sys-color-error);
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.upload-error-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
}

.upload-error-content strong {
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upload-error-content span {
  font-size: 0.75rem;
  opacity: 0.9;
  line-height: 1.4;
}

.upload-error-close {
  background: none;
  border: none;
  color: var(--md-sys-color-on-error-container);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.upload-error-close:hover {
  opacity: 1;
}

/* Mobile upload progress */
@media (max-width: 768px) {
  .upload-progress-content {
    max-width: 100%;
    margin: 0.5rem;
    max-height: calc(100vh - 120px);
  }

  .upload-error-container {
    top: auto;
    bottom: 5rem;
    right: 1rem;
    left: 1rem;
    max-width: none;
    width: calc(100% - 2rem);
  }

  .upload-progress-body {
    padding: 1rem;
  }

  .upload-progress-item {
    padding: 0.75rem;
  }
}

/* ===== FILE MANAGER UPLOAD OVERLAY ===== */
.fm-upload-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.fm-upload-card {
  background: var(--md-sys-color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-3);
  max-width: 480px;
  width: 100%;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.fm-upload-card h4 {
  margin: 0;
  font-size: 1rem;
  color: var(--md-sys-color-on-surface);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.fm-upload-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 300px;
  overflow-y: auto;
}

.fm-upload-item {
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-md);
  padding: 0.75rem;
}

.fm-upload-item-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.375rem;
  gap: 0.5rem;
}

.fm-upload-item-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.fm-upload-item-status {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
  text-transform: capitalize;
  white-space: nowrap;
}

.fm-upload-item-status.complete {
  color: var(--md-sys-color-primary);
}

.fm-upload-item-status.error {
  color: var(--md-sys-color-error);
}

.fm-upload-item-bar-bg {
  height: 5px;
  background: var(--md-sys-color-surface-variant);
  border-radius: 3px;
  overflow: hidden;
}

.fm-upload-item-bar {
  height: 100%;
  background: var(--md-sys-color-primary);
  border-radius: 3px;
  transition: width 0.25s ease;
}

/* ===== PROGRESSIVE IMAGE RENDERING ===== */

/* Lazy-loaded images: fade in when they receive src */
.nova-lazy-img {
  max-width: 100%;
  height: auto;
  opacity: 0;
  transition: opacity 0.35s ease;
  display: block;
}

.nova-lazy-img[src] {
  opacity: 1;
}

/* Image skeleton placeholder shown while images are loading */
.nova-img-skeleton {
  background: linear-gradient(90deg, var(--md-sys-color-surface-variant) 25%, var(--md-sys-color-surface-container) 50%, var(--md-sys-color-surface-variant) 75%);
  background-size: 200% 100%;
  animation: nova-skeleton-shimmer 1.5s infinite linear;
  border-radius: var(--radius-md);
  margin: 0.5rem 0;
  width: 100%;
  display: block;
}

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

/* Hidden states for oversized / broken images */
.nova-img-error,
.nova-img-oversized {
  display: none !important;
}

/* Editor image container constraints */
.editor img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.editor .nova-img-skeleton {
  max-width: 100%;
}

/* Mobile image optimization */
@media (max-width: 768px) {
  .nova-lazy-img {
    max-width: 100%;
  }

  .nova-img-skeleton {
    min-height: 80px !important;
  }
}

/* Reduced motion: disable shimmer for accessibility */
@media (prefers-reduced-motion: reduce) {
  .nova-img-skeleton {
    animation: none;
    background: var(--md-sys-color-surface-variant);
  }

  .nova-lazy-img {
    transition: none;
    opacity: 1;
  }
}

/* ===== PDF PAGE RENDERING ===== */
.nova-pdf-page {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  border-radius: 4px;
  overflow: hidden;
}

.nova-pdf-page img {
  width: 100%;
  height: auto;
  display: block;
}

.nova-pdf-text-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.nova-pdf-text-layer span {
  pointer-events: auto;
  cursor: text;
}

/* Ensure images inside pages are visible */
.nova-page-inner img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0.5rem 0;
}

/* Ensure tables inside pages are visible */
.nova-page-inner table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5rem 0;
}

.nova-page-inner td,
.nova-page-inner th {
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 0.5rem;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

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

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

/* ===== SELECTION ===== */
::selection {
  background: var(--primary-color);
  color: white;
}

/* ===== FOCUS ===== */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}