/* ==========================================================================
   Import Additional Stylesheets
   ========================================================================== */

@import 'chapter-context.css?v=4';

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
  /* Grayscale Color Palette */
  --color-bg-primary: #fafafa;
  --color-bg-secondary: #f5f5f5;
  --color-bg-tertiary: #ffffff;

  --color-text-primary: #4a4a4a;
  --color-text-secondary: #5a5a5a;
  --color-text-muted: #6b6b6b;
  --color-text-subtle: #8a8a8a;

  --color-heading: #666666;

  --color-border-light: #e5e5e5;
  --color-border-medium: #cccccc;
  --color-border-dark: #999999;

  --color-interactive: #888888;
  --color-interactive-hover: #666666;
  --color-interactive-active: #555555;

  --color-status-main: #6b6b6b;
  --color-status-alt: #8a8a8a;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.12);

  /* Typography Scale */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 28px;
  --font-size-2xl: 40px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Sidebar Dimensions */
  --sidebar-width-expanded: 240px;
  --sidebar-width-collapsed: 64px;
  --sidebar-width-tablet-expanded: 200px;
  --sidebar-bg: #ffffff;
  --sidebar-border: #eeeeee;

  /* Spacing Scale (8px grid) */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-2xl: 200px;

  /* Border Radius Scale */
  --radius-sm: 4px;
  --radius-md: 8px;

  /* Component-specific tokens */
  --chapter-form-radius: 8px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease-in-out;

  /* Z-index layers */
  --z-sidebar: 100;
  --z-overlay: 90;
  --z-header: 80;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 0;

  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);

  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);

  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-md);
  color: var(--color-heading);
}

h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-md);
  color: var(--color-heading);
}

h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  margin: 0 0 var(--spacing-sm);
  color: var(--color-heading);
}

a {
  color: var(--color-interactive);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-interactive-hover);
}

a:focus {
  outline: 2px solid var(--color-text-muted);
  outline-offset: 2px;
}

/* ==========================================================================
   Layout - Mobile First
   ========================================================================== */

/* Mobile Layout - Default */
.app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Main Content - Mobile */
.app-main {
  flex: 1;
  padding: var(--spacing-lg) var(--spacing-md);
  width: 100%;
}

/* ==========================================================================
   Mobile Header (visible only on <640px)
   ========================================================================== */

.mobile-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--sidebar-bg);
  border-bottom: 1px solid var(--sidebar-border);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

.mobile-header__brand {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* Mobile header toggle - use hamburger icon bars */
.mobile-header .sidebar-toggle__icon {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  width: 24px;
  height: 24px;
}

.mobile-header .sidebar-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: currentColor;
  border-radius: 1px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Close icon state for mobile header toggle */
.mobile-header .sidebar-toggle--close .sidebar-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-header .sidebar-toggle--close .sidebar-toggle__bar:nth-child(2) {
  opacity: 0;
}

.mobile-header .sidebar-toggle--close .sidebar-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Footer */
.app-footer {
  padding: var(--spacing-lg) var(--spacing-md);
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--sidebar-border);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Sidebar - Mobile First (Drawer Pattern)
   ========================================================================== */

/* Sidebar - Mobile Base (Hidden Drawer) */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width-expanded);
  background-color: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
  z-index: var(--z-sidebar);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.sidebar.is-open {
  transform: translateX(0);
}

/* Sidebar Overlay - Mobile */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
  z-index: var(--z-overlay);
}

.sidebar-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

/* Sidebar Header */
.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--sidebar-border);
  min-height: 56px;
}

.sidebar__brand {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* Sidebar Navigation */
.sidebar__nav {
  flex: 1;
  padding: var(--spacing-sm) 0;
  overflow-y: auto;
}

/* Sidebar Footer */
.sidebar__footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--sidebar-border);
}

.sidebar__user-info {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

/* ==========================================================================
   Sidebar Toggle Button
   ========================================================================== */

.sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background-color: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.sidebar-toggle:hover {
  background-color: var(--color-bg-secondary);
}

.sidebar-toggle:focus {
  outline: 2px solid var(--color-text-muted);
  outline-offset: 2px;
}

.sidebar-toggle__icon {
  width: 24px;
  height: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}

.sidebar-toggle__bar {
  width: 20px;
  height: 2px;
  background-color: currentColor;
  border-radius: 1px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Close icon state */
.sidebar-toggle--close .sidebar-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.sidebar-toggle--close .sidebar-toggle__bar:nth-child(2) {
  opacity: 0;
}

.sidebar-toggle--close .sidebar-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Collapse/Expand icons */
.sidebar-toggle__arrow {
  display: none;
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
}

.sidebar-toggle--collapse .sidebar-toggle__arrow {
  transform: rotate(180deg);
}

/* Mobile toggle wrapper - only visible on mobile */
.sidebar-header__toggle-mobile {
  display: flex;
}

/* ==========================================================================
   Navigation Item
   ========================================================================== */

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.nav-item:focus {
  outline: 2px solid var(--color-text-muted);
  outline-offset: -2px;
}

.nav-item.is-active {
  background-color: var(--color-bg-secondary);
  border-left-color: var(--color-text-primary);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.nav-item__icon {
  width: 20px;
  height: 20px;
  min-width: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-item__label {
  font-size: var(--font-size-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--transition-normal);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  min-height: 44px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  border-radius: 4px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn:focus {
  outline: 2px solid var(--color-text-muted);
  outline-offset: 2px;
}

.btn--primary,
.btn--primary:visited {
  background-color: var(--color-text-primary);
  color: var(--color-bg-tertiary);
}

.btn--primary:hover,
.btn--primary:visited:hover {
  background-color: var(--color-interactive-hover);
  transform: translateY(-1px);
}

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

.btn--secondary {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-medium);
}

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

.btn--text {
  background: none;
  color: var(--color-interactive);
  padding: var(--spacing-xs) var(--spacing-sm);
  text-decoration: underline;
}

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

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

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

.card__footer {
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border-light);
}

/* ==========================================================================
   Tables
   ========================================================================== */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-base);
}

.data-table th {
  text-align: left;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-secondary);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
}

.data-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background-color: var(--color-bg-primary);
}

/* ==========================================================================
   Status Badges
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  border-radius: 12px;
  letter-spacing: 0.5px;
}

.badge--main {
  background-color: var(--color-status-main);
  color: var(--color-bg-tertiary);
}

.badge--alternate {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Forms
   ========================================================================== */

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.form-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 44px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  border-color: var(--color-text-muted);
  outline: none;
  box-shadow: 0 0 0 3px rgba(102, 102, 102, 0.1);
}

.form-input::placeholder {
  color: var(--color-text-subtle);
}

/* Textarea specific styling */
.form-input--textarea {
  min-height: var(--spacing-2xl);
  resize: vertical;
}

/* Form error messages */
.form-error {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
}

/* Chapter form container */
.chapter-form {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--chapter-form-radius);
}

/* Chapter form header */
.chapter-form__header {
  margin-bottom: var(--spacing-lg);
}

/* Back link */
.chapter-form__back-link {
  display: inline-block;
  padding: 12px 16px;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-base, 14px);
  min-height: 44px;
  box-sizing: border-box;
}

.chapter-form__back-link:hover {
  text-decoration: underline;
}

.chapter-form__back-link:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  text-decoration: underline;
}

/* Page title */
.chapter-form__title {
  font-size: var(--font-size-h1-mobile, 20px);
  font-weight: var(--font-weight-bold, 700);
  margin: 0 0 var(--spacing-lg) 0;
  color: var(--color-text-primary);
}

/* Tablet breakpoint */
@media (min-width: 640px) {
  .chapter-form {
    padding: var(--spacing-lg);
  }

  .chapter-form__title {
    font-size: var(--font-size-h1-tablet, 24px);
  }
}

/* Desktop breakpoint */
@media (min-width: 1024px) {
  .chapter-form {
    padding: var(--spacing-xl);
  }

  .chapter-form__title {
    font-size: var(--font-size-h1-desktop, 28px);
  }
}

/* Form actions (buttons) */
.form-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

/* Light button variant for forms */
.btn--light {
  background-color: var(--color-interactive);
  color: var(--color-bg-tertiary);
}

.btn--light:hover {
  background-color: var(--color-interactive-hover);
  transform: translateY(-1px);
}

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

/* ==========================================================================
   Homepage Styles (Updated for grayscale)
   ========================================================================== */

.homepage {
  padding: var(--spacing-lg) 0;
}

.homepage__hero {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  margin-bottom: var(--spacing-xxl);
}

.homepage__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.homepage__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--line-height-relaxed);
}

.homepage__ctas {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.homepage__cta {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  text-decoration: none;
  border-radius: 4px;
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
  min-height: 44px;
  line-height: calc(44px - 16px);
}

.homepage__cta--primary {
  background-color: var(--color-interactive);
  color: var(--color-bg-tertiary);
}

.homepage__cta--primary:hover {
  background-color: var(--color-interactive-hover);
  color: var(--color-bg-tertiary);
  transform: translateY(-2px);
}

.homepage__cta--primary:active {
  background-color: var(--color-interactive-active);
  transform: translateY(0);
}

.homepage__cta--secondary {
  background-color: var(--color-bg-tertiary);
  color: var(--color-interactive);
  border: 1px solid var(--color-border-medium);
}

.homepage__cta--secondary:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-interactive-hover);
  border-color: var(--color-border-dark);
  transform: translateY(-2px);
}

.homepage__recent-branches {
  margin-top: var(--spacing-xxl);
}

.homepage__section-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.homepage__empty-state {
  text-align: center;
  padding: var(--spacing-lg);
  color: var(--color-text-subtle);
  font-style: italic;
}

.homepage__branches-list {
  display: grid;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.homepage__branch-card {
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  transition: box-shadow var(--transition-normal);
}

.homepage__branch-card:hover {
  box-shadow: var(--shadow-md);
}

.homepage__branch-link {
  display: block;
  padding: var(--spacing-md);
  text-decoration: none;
  color: inherit;
}

.homepage__branch-name {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--color-interactive);
}

.homepage__branch-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* UUID hidden but available via data attribute */
.homepage__branch-uuid {
  display: none; /* Hidden from view */
}

.homepage__branch-status {
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 12px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
}

.homepage__branch-status--main {
  background-color: var(--color-status-main);
  color: var(--color-bg-tertiary);
}

.homepage__browse-all {
  text-align: center;
  margin-top: var(--spacing-lg);
}

.homepage__browse-link {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-interactive);
  color: var(--color-bg-tertiary);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  border: none;
  border-radius: 4px;
  transition: all var(--transition-normal);
  min-height: 44px;
}

.homepage__browse-link:hover {
  background-color: var(--color-interactive-hover);
  transform: translateY(-2px);
}

.homepage__browse-link:active {
  background-color: var(--color-interactive-active);
  transform: translateY(0);
}

/* Chapter preview text truncation - responsive multi-line clamp */
.homepage__chapter-preview {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  line-clamp: 3;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  margin: 0 0 var(--spacing-sm);
}

/* ==========================================================================
   Branches List Styles (Updated for grayscale)
   ========================================================================== */

.branches-list {
  width: 100%;
  overflow-x: auto;
}

.branches-list__table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-base);
}

.branches-list__header {
  text-align: left;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-secondary);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
}

.branches-list__row {
  transition: background-color var(--transition-fast);
}

.branches-list__row:hover {
  background-color: var(--color-bg-primary);
}

.branches-list__cell {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.branches-list__link {
  color: var(--color-interactive);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.branches-list__link:hover {
  color: var(--color-interactive-hover);
  text-decoration: underline;
}

/* Chapter preview text truncation - responsive multi-line clamp */
.branches-list__chapter-preview {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  line-clamp: 3;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  margin: 0;
}

/* UUID hidden but available via data attribute */
.branches-list__uuid {
  display: none;
}

.branches-list__status {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  border-radius: 12px;
}

.branches-list__status--main {
  background-color: var(--color-status-main);
  color: var(--color-bg-tertiary);
}

.branches-list__status--alternate {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
}

.branches-list__pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) 0;
}

.branches-list__pagination-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 44px;
  color: var(--color-interactive);
  text-decoration: none;
  border: 1px solid var(--color-border-medium);
  border-radius: 4px;
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
}

.branches-list__pagination-link:hover {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-interactive);
}

.branches-list__pagination-info {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Tablet Styles (640px - 1024px)
   ========================================================================== */

@media (min-width: 640px) {
  /* Hide mobile header on tablet+ */
  .mobile-header {
    display: none;
  }

  /* Sidebar becomes fixed on left side on tablet+ */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    transform: none;
    width: var(--sidebar-width-tablet-expanded);
    box-shadow: none;
  }

  .sidebar.is-open {
    transform: none;
  }

  /* Hide mobile overlay on tablet+ */
  .sidebar-overlay {
    display: none;
  }

  /* Sidebar collapsed state */
  .sidebar--collapsed {
    width: var(--sidebar-width-collapsed);
  }

  .sidebar--collapsed .nav-item__label {
    opacity: 0;
    width: 0;
    overflow: hidden;
  }

  .sidebar--collapsed .sidebar__brand {
    opacity: 0;
    width: 0;
    overflow: hidden;
  }

  /* Main content - add left margin to not be covered by fixed sidebar */
  .app-main {
    padding: var(--spacing-xl) var(--spacing-lg);
    padding-top: var(--spacing-xl);
    width: calc(100% - var(--sidebar-width-tablet-expanded));
    margin-left: var(--sidebar-width-tablet-expanded);
    max-width: 900px;
  }

  /* Adjust main content when sidebar is collapsed */
  .sidebar--collapsed ~ .app-main,
  .app-layout:has(.sidebar--collapsed) .app-main {
    width: calc(100% - var(--sidebar-width-collapsed));
    margin-left: var(--sidebar-width-collapsed);
  }

  /* Show collapse/expand arrow instead of hamburger */
  .sidebar-toggle__bar {
    display: none;
  }

  .sidebar-toggle__arrow {
    display: block;
  }

  /* Hide mobile toggle on tablet+ */
  .sidebar-header__toggle-mobile {
    display: none;
  }

  /* Homepage card grid on tablet */
  .homepage__branches-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   Desktop Styles (> 1024px)
   ========================================================================== */

@media (min-width: 1024px) {
  /* Sidebar width on desktop */
  .sidebar {
    width: var(--sidebar-width-expanded);
  }

  .sidebar--collapsed {
    width: var(--sidebar-width-collapsed);
  }

  /* Main content - update margin for desktop sidebar width */
  .app-main {
    padding: var(--spacing-lg) var(--spacing-xl);
    width: calc(100% - var(--sidebar-width-expanded));
    margin-left: var(--sidebar-width-expanded);
    max-width: 1200px;
  }

  /* Adjust main content when sidebar is collapsed */
  .sidebar--collapsed ~ .app-main,
  .app-layout:has(.sidebar--collapsed) .app-main {
    width: calc(100% - var(--sidebar-width-collapsed));
    margin-left: var(--sidebar-width-collapsed);
  }

  /* Homepage card grid on desktop */
  .homepage__branches-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   Branches Show Styles
   ========================================================================== */

.branches-show {
  max-width: 100%;
}

.branches-show__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.branches-show__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.branches-show__back-link {
  color: var(--color-interactive);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.branches-show__back-link:hover {
  color: var(--color-interactive-hover);
  text-decoration: underline;
}

.branches-show__status {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  border-radius: 12px;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
}

.branches-show__status--main {
  background-color: var(--color-status-main);
  color: var(--color-bg-tertiary);
}

.branches-show__actions {
  margin-bottom: var(--spacing-lg);
}

.branches-show__create-chapter-link {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-interactive);
  color: var(--color-bg-tertiary);
  text-decoration: none;
  border-radius: 4px;
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
  min-height: 44px;
}

.branches-show__create-chapter-link:hover {
  background-color: var(--color-interactive-hover);
  transform: translateY(-1px);
}

.branches-show__create-chapter-link:active {
  background-color: var(--color-interactive-active);
  transform: translateY(0);
}

.branches-show__chapters-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.branches-show__empty-chapters {
  padding: var(--spacing-xxl);
  text-align: center;
  background-color: var(--color-bg-secondary);
  border-radius: 8px;
}

.branches-show__empty-message {
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
  margin: 0;
}

.branches-show__chapters-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Chapter Card */
.branches-show__chapter {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* Chapter Body */
.branches-show__chapter-body {
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}

/* Markdown content styling */
.branches-show__chapter-body h1,
.branches-show__chapter-body h2,
.branches-show__chapter-body h3,
.branches-show__chapter-body h4,
.branches-show__chapter-body h5,
.branches-show__chapter-body h6 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.branches-show__chapter-body h1 { font-size: var(--font-size-2xl); }
.branches-show__chapter-body h2 { font-size: var(--font-size-xl); }
.branches-show__chapter-body h3 { font-size: var(--font-size-lg); }
.branches-show__chapter-body p { margin: var(--spacing-sm) 0; }
.branches-show__chapter-body ul,
.branches-show__chapter-body ol {
  margin: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
}
.branches-show__chapter-body li {
  margin: var(--spacing-xs) 0;
}
.branches-show__chapter-body a {
  color: var(--color-interactive);
  text-decoration: underline;
}
.branches-show__chapter-body a:hover {
  color: var(--color-interactive-hover);
}
.branches-show__chapter-body strong {
  font-weight: var(--font-weight-semibold);
}
.branches-show__chapter-body em {
  font-style: italic;
}
.branches-show__chapter-body code {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-xs);
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9em;
}

/* Chapter Footer */
.branches-show__chapter-footer {
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

/* Chapter Meta (Author + Timestamp) */
.branches-show__chapter-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
}

.branches-show__chapter-author {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.branches-show__chapter-separator {
  color: var(--color-text-subtle);
  font-size: var(--font-size-sm);
}

.branches-show__chapter-timestamp {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Chapter Actions */
.branches-show__chapter-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  justify-content: flex-end;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.branches-show__chapter:hover .branches-show__chapter-actions {
  opacity: 1;
}

/* Add Alternative Button - Icon only, circular */
.branches-show__add-alternative-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: transparent;
  color: var(--color-interactive);
  border: 1px solid var(--color-border-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.branches-show__add-alternative-btn:hover {
  background-color: var(--color-interactive);
  color: #ffffff;
  border-color: var(--color-interactive);
}

.branches-show__add-alternative-btn:focus {
  outline: 2px solid var(--color-interactive);
  outline-offset: 2px;
}

/* Responsive Chapter Styles */
@media (min-width: 640px) {
  .branches-show__chapter-body {
    padding: var(--spacing-lg);
  }

  .branches-show__chapter-footer {
    padding: var(--spacing-md) var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .branches-show__chapter-body {
    padding: var(--spacing-xl);
    max-width: 800px;
  }

  .branches-show__chapter-footer {
    padding: var(--spacing-md) var(--spacing-xl);
  }
}

/* ==========================================================================
   Continue Writing Button
   ========================================================================== */

.branches-show__continue {
  margin-top: var(--spacing-xl);
  text-align: center;
}

.branches-show__continue .btn {
  font-size: var(--font-size-base);
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Visually hidden but accessible to screen readers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Spacing utilities */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Form utilities */
.inline { display: inline; }

/* ==========================================================================
   Button Class Aliases (for partial compatibility)
   ========================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  min-height: 44px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  border-radius: 4px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  background-color: var(--color-text-primary);
  color: var(--color-bg-tertiary);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.button:hover {
  background-color: var(--color-interactive-hover);
  transform: translateY(-1px);
}

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

.button:focus {
  outline: 2px solid var(--color-text-muted);
  outline-offset: 2px;
}

.button-secondary {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-medium);
}

.button-secondary:hover {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-border-dark);
}

.button-small {
  padding: var(--spacing-xs) var(--spacing-sm);
  min-height: 32px;
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Notifications List Styles
   ========================================================================== */

.notifications-list {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.notifications-list__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  background-color: var(--color-bg-primary);
}

.notifications-list__header h2 {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-heading);
}

.notifications-list__unread-count {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  background-color: var(--color-status-main);
  color: var(--color-bg-tertiary);
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.notifications-list__header form {
  margin-left: auto;
}

.notifications-list__items {
  list-style: none;
  margin: 0;
  padding: 0;
}

.notifications-list__empty {
  padding: var(--spacing-lg);
}

.notifications-list__footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-primary);
  text-align: center;
}

/* ==========================================================================
   Notifications Empty State
   ========================================================================== */

.notifications-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl) var(--spacing-lg);
  text-align: center;
}

.notifications-empty-state__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-muted);
}

.notifications-empty-state__icon .pos-icon {
  width: 48px;
  height: 48px;
}

.notifications-empty-state h3 {
  margin: 0 0 var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.notifications-empty-state p {
  margin: 0 0 var(--spacing-lg);
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 300px;
}

/* ==========================================================================
   Notification Item
   ========================================================================== */

.notification-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-fast);
}

.notification-item:last-child {
  border-bottom: none;
}

.notification-item:hover {
  background-color: var(--color-bg-primary);
}

.notification-item.is-unread,
.notification-item--unread {
  background-color: var(--color-bg-primary);
  border-left: 3px solid var(--color-interactive);
}

.notification-item__content {
  flex: 1;
  min-width: 0;
}

.notification-item__message {
  margin: 0 0 var(--spacing-xs);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
}

.notification-item__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.notification-item__time {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
}

.notification-item__time svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
}

.notification-item form {
  flex-shrink: 0;
}

/* ==========================================================================
   Notification Bell (Nav)
   ========================================================================== */

.notification-bell {
  position: relative;
}

.notification-bell__badge {
  position: absolute;
  top: var(--spacing-xs);
  right: var(--spacing-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 var(--spacing-xs);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  color: var(--color-bg-tertiary);
  background-color: var(--color-status-main);
  border-radius: 9px;
}

/* ==========================================================================
   Responsive Adjustments for Notifications
   ========================================================================== */

@media (min-width: 640px) {
  .notifications-list__header {
    flex-wrap: nowrap;
  }

  .notification-item {
    padding: var(--spacing-lg) var(--spacing-xl);
  }
}