/* ============================================================
   Ironshelf — Production CSS
   Brand: Ink & Iron Apps
   Dark theme default, mobile-first, accessible
   ============================================================ */

/* --- Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #0F1115;
  --color-bg-elevated: #13161b;
  --color-surface: #1a1d23;
  --color-surface-hover: #22262e;
  --color-surface-active: #2a2f38;
  --color-border: #2a2e36;
  --color-border-subtle: #1f2329;
  --color-paper: #E8E4DA;
  --color-teal: #095F73;
  --color-teal-hover: #0a7189;
  --color-teal-bright: #3BB3C9;
  --color-teal-dim: rgba(59, 179, 201, 0.15);
  --color-muted: #9CA3AF;
  --color-text: #e5e7eb;
  --color-text-dim: #9CA3AF;
  --color-text-bright: #f9fafb;
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  --color-success: #22c55e;
  --color-success-hover: #16a34a;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;

  /* Spacing (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Typography */
  --font-display: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --text-xs: 0.6875rem;    /* 11px */
  --text-sm: 0.8125rem;    /* 13px */
  --text-base: 0.9375rem;  /* 15px */
  --text-md: 1rem;         /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.375rem;     /* 22px */
  --text-2xl: 1.75rem;     /* 28px */
  --text-3xl: 2.25rem;     /* 36px */

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 64px;
  --bottom-nav-height: 64px;
  --content-max-width: 1280px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-glow-teal: 0 0 20px rgba(59, 179, 201, 0.15);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-dropdown: 50;
  --z-sticky: 100;
  --z-modal-backdrop: 200;
  --z-modal: 210;
  --z-toast: 300;
  --z-tooltip: 400;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg);
}

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

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

/* --- Focus --- */
:focus-visible {
  outline: 2px solid var(--color-teal-bright);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

:focus:not(:focus-visible) {
  outline: none;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  color: var(--color-text-bright);
}

h1 {
  font-size: var(--text-2xl);
  letter-spacing: -0.025em;
}

h2 {
  font-size: var(--text-xl);
  letter-spacing: -0.015em;
}

h3 {
  font-size: var(--text-lg);
}

h4 {
  font-size: var(--text-md);
}

.text-overline {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.text-caption {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
}

.text-brand {
  font-family: var(--font-display);
  color: var(--color-paper);
}

.text-brand em {
  color: var(--color-teal-bright);
  font-style: italic;
}

/* --- Links --- */
a {
  color: var(--color-teal-bright);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* --- Page Transitions --- */
.page-enter {
  animation: pageEnter var(--transition-base) forwards;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Layout: App Shell --- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sticky);
  transition: transform var(--transition-base);
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-brand {
  padding: var(--space-6) var(--space-6) var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-medium);
  color: var(--color-paper);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
}

.sidebar-brand em {
  color: var(--color-teal-bright);
  font-style: italic;
}

.sidebar-brand .brand-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.sidebar-section-label {
  padding: var(--space-4) var(--space-6) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-2) 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-6);
  color: var(--color-text-dim);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: 0;
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
}

.sidebar-nav a:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.sidebar-nav a.active {
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
}

.sidebar-nav a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: var(--space-2);
  bottom: var(--space-2);
  width: 3px;
  background: var(--color-teal-bright);
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

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

.sidebar-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.sidebar-footer .user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.sidebar-footer .user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: white;
  flex-shrink: 0;
}

.sidebar-footer .user-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-footer .logout-btn {
  background: none;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-footer .logout-btn:hover {
  color: var(--color-danger);
  background: rgba(239, 68, 68, 0.1);
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  padding: 0 var(--space-8);
  gap: var(--space-4);
  z-index: var(--z-sticky);
}

.main-header .mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

.main-header .mobile-menu-btn:hover {
  background: var(--color-surface-hover);
}

.main-body {
  flex: 1;
  padding: var(--space-8);
  max-width: var(--content-max-width);
  width: 100%;
  margin: 0 auto;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-muted);
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.breadcrumbs a {
  color: var(--color-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--color-teal-bright);
}

.breadcrumbs .separator {
  color: var(--color-border);
  flex-shrink: 0;
}

.breadcrumbs .current {
  color: var(--color-text);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Page Header --- */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: var(--text-2xl);
}

.page-header .actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --- Search Bar --- */
.search-bar {
  position: relative;
  max-width: 320px;
  width: 100%;
}

.search-bar .search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

.search-bar input {
  width: 100%;
  padding: var(--space-2) var(--space-4) var(--space-2) var(--space-10);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-bar input::placeholder {
  color: var(--color-muted);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--color-teal-bright);
  box-shadow: var(--shadow-glow-teal);
}

/* --- Sort Controls --- */
.sort-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sort-controls select {
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  cursor: pointer;
  appearance: none;
  padding-right: var(--space-8);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.sort-controls select:focus {
  outline: none;
  border-color: var(--color-teal-bright);
}

.sort-direction-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.sort-direction-btn:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-teal-bright);
}

/* --- Toolbar --- */
.toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* --- Cards --- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--color-border-subtle);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.card-interactive {
  cursor: pointer;
}

.card-interactive:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.card-interactive:active {
  background: var(--color-surface-hover);
}

/* --- Grid --- */
.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-libraries { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid-books { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.grid-authors { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: none;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.4;
  min-height: 36px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

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

.btn-primary:hover {
  background: var(--color-teal-hover);
  box-shadow: var(--shadow-glow-teal);
}

.btn-secondary {
  background: var(--color-surface-hover);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-active);
  border-color: var(--color-teal-bright);
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--color-text-dim);
  padding: var(--space-2) var(--space-3);
}

.btn-ghost:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  min-height: 28px;
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  min-height: 44px;
}

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

/* --- Forms --- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-dim);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input:focus {
  outline: none;
  border-color: var(--color-teal-bright);
  box-shadow: 0 0 0 3px rgba(59, 179, 201, 0.1);
}

.form-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

select.form-input {
  appearance: none;
  padding-right: var(--space-10);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
}

.form-hint {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-danger);
}

/* --- Book Covers --- */
.book-cover {
  aspect-ratio: 2/3;
  border-radius: var(--radius-md);
  object-fit: cover;
  width: 100%;
  background: var(--color-surface-hover);
  overflow: hidden;
  position: relative;
}

.book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.book-cover-placeholder {
  aspect-ratio: 2/3;
  border-radius: var(--radius-md);
  width: 100%;
  background: linear-gradient(135deg, var(--color-surface-hover) 0%, var(--color-surface-active) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
}

.book-cover-placeholder svg {
  width: 40%;
  height: 40%;
  opacity: 0.4;
}

/* --- Book Cards --- */
.book-card {
  cursor: pointer;
  transition: transform var(--transition-base);
  position: relative;
}

.book-card:hover {
  transform: translateY(-4px);
}

.book-card:hover .book-cover img {
  transform: scale(1.03);
}

.book-card .book-cover {
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base);
}

.book-card:hover .book-cover {
  box-shadow: var(--shadow-lg);
}

.book-card .book-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  margin-top: var(--space-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text);
}

.book-card .book-meta {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: var(--space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.book-card .series-badge {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  background: var(--color-teal);
  color: white;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  min-width: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

/* --- List Items --- */
.list-group {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  overflow: hidden;
}

.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  cursor: pointer;
  transition: background var(--transition-fast);
  gap: var(--space-4);
}

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

.list-item:hover {
  background: var(--color-surface-hover);
}

.list-item:active {
  background: var(--color-surface-active);
}

.list-item-content {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 0;
  flex: 1;
}

.list-item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.list-item-text {
  min-width: 0;
}

.list-item-name {
  font-weight: var(--weight-medium);
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.list-item-subtitle {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: 2px;
}

.list-item-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* --- Badges / Chips --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-teal {
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
}

.badge-muted {
  background: rgba(156, 163, 175, 0.15);
  color: var(--color-muted);
}

.badge-success {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-hover);
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
  white-space: nowrap;
}

/* --- Table --- */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

thead {
  background: var(--color-surface);
}

thead th {
  padding: var(--space-3) var(--space-4);
  font-weight: var(--weight-semibold);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background var(--transition-fast);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--color-surface-hover);
}

tbody td {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
}

/* --- Progress Bar --- */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--color-surface-hover);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--color-teal-bright);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar-indeterminate .progress-bar-fill {
  width: 30%;
  animation: progressIndeterminate 1.5s ease-in-out infinite;
}

@keyframes progressIndeterminate {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* --- Skeleton Loading --- */
.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-hover);
  border-radius: var(--radius-md);
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.04) 50%,
    transparent 100%
  );
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-sm);
}

.skeleton-text:last-child {
  width: 70%;
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-sm);
}

.skeleton-cover {
  aspect-ratio: 2/3;
  border-radius: var(--radius-md);
}

.skeleton-card {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
}

/* --- Toast Notifications --- */
#toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-3);
  z-index: var(--z-toast);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  animation: toastIn var(--transition-base) forwards;
  max-width: 380px;
  backdrop-filter: blur(8px);
}

.toast.toast-exit {
  animation: toastOut var(--transition-fast) forwards;
}

.toast-success {
  background: rgba(34, 197, 94, 0.9);
  color: white;
}

.toast-error {
  background: rgba(239, 68, 68, 0.9);
  color: white;
}

.toast-info {
  background: rgba(59, 130, 246, 0.9);
  color: white;
}

.toast-warning {
  background: rgba(245, 158, 11, 0.9);
  color: white;
}

.toast-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.toast-message {
  flex: 1;
  min-width: 0;
}

.toast-dismiss {
  background: none;
  border: none;
  color: inherit;
  opacity: 0.7;
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-dismiss:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.15);
}

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

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

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal-backdrop);
  padding: var(--space-4);
  animation: fadeIn var(--transition-fast) forwards;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  animation: modalIn var(--transition-base) forwards;
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast), background var(--transition-fast);
}

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

.modal h2 {
  margin-bottom: var(--space-2);
  padding-right: var(--space-8);
}

.modal .modal-description {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-6);
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

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

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6) 0;
}

.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-dim);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--color-surface-hover);
  border-color: var(--color-teal-bright);
  color: var(--color-text);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-btn.active {
  background: var(--color-teal);
  border-color: var(--color-teal);
  color: white;
}

.pagination-info {
  font-size: var(--text-sm);
  color: var(--color-muted);
  padding: 0 var(--space-3);
}

/* --- Empty State --- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16) var(--space-8);
  color: var(--color-muted);
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-6);
  opacity: 0.5;
  color: var(--color-muted);
}

.empty-state h3 {
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.empty-state p {
  font-size: var(--text-sm);
  color: var(--color-muted);
  max-width: 320px;
  margin-bottom: var(--space-6);
}

/* --- Error State --- */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-12) var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
}

.error-state-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-4);
  color: var(--color-danger);
  opacity: 0.8;
}

.error-state h3 {
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.error-state p {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-6);
  max-width: 400px;
}

/* --- Login Page --- */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-6);
  background: var(--color-bg);
}

.login-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
}

.login-card .brand {
  text-align: center;
  margin-bottom: var(--space-8);
}

.login-card .brand h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--color-paper);
  font-weight: var(--weight-medium);
}

.login-card .brand h1 em {
  color: var(--color-teal-bright);
  font-style: italic;
}

.login-card .brand p {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-top: var(--space-2);
}

.login-card .btn-primary {
  width: 100%;
  margin-top: var(--space-4);
  min-height: 44px;
  font-size: var(--text-base);
}

.login-footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

/* --- Author Alpha Jump --- */
.alpha-jump {
  position: sticky;
  top: var(--header-height);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-2);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  z-index: var(--z-dropdown);
}

.alpha-jump a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 24px;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.alpha-jump a:hover,
.alpha-jump a.active {
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
}

/* --- Book Detail --- */
.book-detail {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-8);
  align-items: start;
}

.book-detail-cover {
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
}

.book-detail-cover .book-cover {
  box-shadow: var(--shadow-lg);
  cursor: zoom-in;
}

.book-detail-info h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.book-detail-info .author-link {
  font-size: var(--text-base);
  color: var(--color-teal-bright);
  margin-bottom: var(--space-4);
  display: block;
}

.book-detail-metadata {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  margin: var(--space-6) 0;
  padding: var(--space-5);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
}

.book-detail-metadata dt {
  color: var(--color-muted);
  font-weight: var(--weight-medium);
}

.book-detail-metadata dd {
  color: var(--color-text);
}

.book-detail-formats {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin: var(--space-6) 0;
}

.book-detail-description {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-dim);
}

.book-detail-description p {
  margin-bottom: var(--space-4);
}

.book-detail-custom {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
}

/* --- Cover Zoom Modal --- */
.cover-zoom-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  cursor: zoom-out;
  animation: fadeIn var(--transition-fast) forwards;
  padding: var(--space-8);
}

.cover-zoom-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}

/* --- Library Card --- */
.library-card {
  position: relative;
  overflow: hidden;
}

.library-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-teal);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.library-card:hover::before {
  opacity: 1;
}

.library-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

/* Pin library button */
.pin-library-btn {
  background: none;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  flex-shrink: 0;
}

.pin-library-btn:hover {
  color: var(--color-teal-bright);
  background: var(--color-teal-dim);
}

.pin-library-btn.is-pinned {
  color: var(--color-teal-bright);
}

/* Pinned libraries in sidebar */
.sidebar-pinned-libraries {
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-subtle);
}

.sidebar-pinned-libraries a {
  font-size: var(--text-sm);
}

.library-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.library-card-name {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-top: var(--space-4);
}

.library-card-path {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.library-card-stats {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

.library-card-stat {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.library-card-stat strong {
  color: var(--color-text);
  font-weight: var(--weight-semibold);
}

/* --- Settings --- */
.settings-section {
  margin-bottom: var(--space-8);
}

.settings-section h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.settings-section .description {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-5);
}

.api-key-display {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--color-bg);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  word-break: break-all;
  color: var(--color-teal-bright);
  margin: var(--space-4) 0;
}

/* --- Server Update --- */
.update-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

.update-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.update-card-header .nav-icon {
  color: var(--color-teal-bright);
}

.update-version-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.update-version-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: rgba(156, 163, 175, 0.12);
  color: var(--color-muted);
}

.update-version-badge.is-current {
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
}

.update-version-badge.is-latest {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
}

.update-version-arrow {
  color: var(--color-muted);
  font-size: var(--text-lg);
}

.update-available-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(59, 179, 201, 0.08);
  border: 1px solid rgba(59, 179, 201, 0.2);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-teal-bright);
}

.update-available-banner .nav-icon {
  flex-shrink: 0;
}

.update-up-to-date {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-success);
  margin-bottom: var(--space-4);
}

.update-actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
}

.update-release-notes {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  max-height: 200px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.update-release-notes-toggle {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-teal-bright);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.update-release-notes-toggle:hover {
  color: var(--color-teal-hover);
}

/* Update progress steps */
.update-progress {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.update-progress-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-muted);
  transition: color var(--transition-fast);
}

.update-progress-step.is-active {
  color: var(--color-teal-bright);
}

.update-progress-step.is-complete {
  color: var(--color-success);
}

.update-progress-step.is-failed {
  color: var(--color-danger);
}

.update-progress-step .nav-icon {
  flex-shrink: 0;
}

.update-progress-bar {
  width: 100%;
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--space-1);
}

.update-progress-bar-fill {
  height: 100%;
  background: var(--color-teal-bright);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  width: 0%;
}

/* Spinner for update */
.update-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-teal-bright);
  border-radius: 50%;
  animation: update-spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes update-spin {
  to { transform: rotate(360deg); }
}

/* Success pulse */
.update-success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.2);
  color: var(--color-success);
  animation: update-pulse 1.5s ease-in-out;
}

@keyframes update-pulse {
  0% { transform: scale(0.8); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

.update-download-size {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-left: var(--space-2);
}

/* --- Mobile Bottom Nav --- */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottom-nav-height);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  z-index: var(--z-sticky);
  padding: 0 var(--space-4);
}

.bottom-nav nav {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: 100%;
}

.bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-muted);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  transition: color var(--transition-fast);
  text-decoration: none;
  min-width: 56px;
}

.bottom-nav a:hover,
.bottom-nav a.active {
  color: var(--color-teal-bright);
}

.bottom-nav .nav-icon {
  width: 22px;
  height: 22px;
}

/* --- Mobile Overlay --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sticky) - 1);
}

.sidebar-overlay.visible {
  display: block;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

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

  .sidebar-overlay.visible ~ .sidebar {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding-bottom: var(--bottom-nav-height);
  }

  .main-header .mobile-menu-btn {
    display: flex;
  }

  .main-body {
    padding: var(--space-4);
  }

  .bottom-nav {
    display: block;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-header .actions {
    width: 100%;
    justify-content: flex-start;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar-left, .toolbar-right {
    width: 100%;
  }

  .search-bar {
    max-width: 100%;
  }

  .book-detail {
    grid-template-columns: 1fr;
  }

  .book-detail-cover {
    position: static;
    display: flex;
    justify-content: center;
  }

  .book-detail-cover .book-cover {
    max-width: 180px;
  }

  .grid-books {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  .grid-libraries {
    grid-template-columns: 1fr;
  }

  .alpha-jump {
    flex-direction: row;
    overflow-x: auto;
    position: static;
    margin-bottom: var(--space-4);
  }

  #toast-container {
    bottom: calc(var(--bottom-nav-height) + var(--space-4));
    right: var(--space-4);
    left: var(--space-4);
  }

  .toast {
    max-width: 100%;
  }

  .modal {
    padding: var(--space-6);
    max-width: calc(100vw - var(--space-8));
  }
}

@media (max-width: 480px) {
  .grid-books {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-3);
  }

  .book-card .book-title {
    font-size: var(--text-xs);
  }

  .login-card {
    padding: var(--space-8) var(--space-6);
  }
}

@media (min-width: 769px) {
  .bottom-nav {
    display: none;
  }
}

/* --- Notification Bell --- */
.sidebar-notification-wrap {
  position: relative;
  padding: var(--space-1) var(--space-6);
}

.notification-bell-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--color-text-dim);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  gap: var(--space-2);
}

.notification-bell-btn:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.notif-badge-count {
  position: absolute;
  top: -2px;
  right: calc(50% - 24px);
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--color-danger);
  color: white;
  font-size: 10px;
  font-weight: var(--weight-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  pointer-events: none;
  box-shadow: 0 0 0 2px var(--color-surface);
  animation: badgePop var(--transition-fast) forwards;
}

@keyframes badgePop {
  0% { transform: scale(0); }
  60% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* --- Notification Panel --- */
.notification-panel {
  position: absolute;
  top: 100%;
  left: var(--space-2);
  right: var(--space-2);
  margin-top: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-dropdown);
  overflow: hidden;
  animation: notifPanelIn var(--transition-base) forwards;
  max-width: calc(var(--sidebar-width) - var(--space-4));
}

@keyframes notifPanelIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.notification-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
}

.notification-panel-header h3 {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
}

.notification-panel-body {
  max-height: 360px;
  overflow-y: auto;
}

/* --- Notification Items --- */
.notification-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  cursor: pointer;
  transition: background var(--transition-fast);
  border-left: 3px solid transparent;
  position: relative;
}

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

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

.notification-item:focus-visible {
  outline: 2px solid var(--color-teal-bright);
  outline-offset: -2px;
}

.notification-item.notification-unread {
  background: rgba(59, 179, 201, 0.04);
}

/* Notification type accent borders */
.notification-item.notif-accent-teal {
  border-left-color: var(--color-teal-bright);
}

.notification-item.notif-accent-green {
  border-left-color: var(--color-success);
}

.notification-item.notif-accent-blue {
  border-left-color: var(--color-info);
}

.notification-item.notif-accent-yellow {
  border-left-color: var(--color-warning);
}

.notification-item-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-muted);
}

.notification-item-icon svg {
  width: 16px;
  height: 16px;
}

.notif-accent-teal .notification-item-icon {
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
}

.notif-accent-green .notification-item-icon {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
}

.notif-accent-blue .notification-item-icon {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-info);
}

.notif-accent-yellow .notification-item-icon {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

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

.notification-item-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.notification-item-message {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  margin-top: 1px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.notification-item-time {
  font-size: 10px;
  color: var(--color-muted);
  margin-top: 2px;
}

.notification-item-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.notification-unread-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-teal-bright);
  flex-shrink: 0;
}

.notification-dismiss-btn {
  background: none;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: 2px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast), color var(--transition-fast);
  width: 20px;
  height: 20px;
}

.notification-dismiss-btn svg {
  width: 12px;
  height: 12px;
}

.notification-item:hover .notification-dismiss-btn {
  opacity: 1;
}

.notification-dismiss-btn:hover {
  color: var(--color-danger);
}

.notification-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-8) var(--space-4);
  color: var(--color-muted);
}

.notification-empty svg {
  width: 32px;
  height: 32px;
  opacity: 0.4;
}

.notification-empty p {
  font-size: var(--text-sm);
}

/* --- Notification Preferences Icon Colors --- */
.notif-pref-icon.notif-accent-teal {
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
}

.notif-pref-icon.notif-accent-green {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
}

.notif-pref-icon.notif-accent-blue {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-info);
}

.notif-pref-icon.notif-accent-yellow {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

/* --- Scan Progress --- */
.scan-progress-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  margin-bottom: var(--space-4);
}

.scan-progress-wrap .progress-bar {
  flex: 1;
  height: 6px;
}

.scan-status-text {
  font-size: var(--text-xs);
  color: var(--color-teal-bright);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  flex-shrink: 0;
}

/* --- Responsive: Notifications --- */
@media (max-width: 768px) {
  .notification-panel {
    position: fixed;
    top: var(--header-height);
    left: var(--space-4);
    right: var(--space-4);
    max-width: none;
  }

  .notification-panel-body {
    max-height: 50vh;
  }

  .notification-dismiss-btn {
    opacity: 1;
  }
}

/* --- Utility Classes --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --- Rating Stars --- */
.rating {
  display: inline-flex;
  gap: 2px;
  color: var(--color-warning);
}

.rating .star-empty {
  color: var(--color-border);
}

/* --- Dashboard Sections --- */
.dashboard-section {
  margin-bottom: var(--space-10);
}

.dashboard-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.dashboard-section-header h2 {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
}

.dashboard-section-header .section-link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-teal-bright);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.dashboard-section-header .section-link:hover {
  color: var(--color-paper);
}

/* --- Continue Reading — Horizontal Scroll Row --- */
.continue-reading-row {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: var(--space-3);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.continue-reading-row::-webkit-scrollbar {
  height: 6px;
}

.continue-reading-row::-webkit-scrollbar-track {
  background: transparent;
}

.continue-reading-row::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.continue-reading-card {
  flex: 0 0 160px;
  scroll-snap-align: start;
  cursor: pointer;
  transition: transform var(--transition-base);
  position: relative;
}

.continue-reading-card:hover {
  transform: translateY(-4px);
}

.continue-reading-card .book-cover {
  box-shadow: var(--shadow-md);
  position: relative;
}

.continue-reading-card:hover .book-cover {
  box-shadow: var(--shadow-lg);
}

.continue-reading-card:hover .book-cover img {
  transform: scale(1.03);
}

/* Progress Bar Overlay on Book Card Cover */
.cover-progress-wrap {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-2);
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

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

.cover-progress-fill {
  height: 100%;
  background: var(--color-teal-bright);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.cover-progress-label {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.85);
  margin-top: 2px;
  text-align: right;
  font-weight: var(--weight-medium);
}

.continue-reading-card .book-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  margin-top: var(--space-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text);
}

.continue-reading-card .book-meta {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: var(--space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- Collection Cards --- */
.grid-collections {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.collection-card {
  position: relative;
  overflow: hidden;
}

.collection-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-teal-bright);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.collection-card:hover::before {
  opacity: 1;
}

.collection-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.collection-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.collection-card-name {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-top: var(--space-3);
  color: var(--color-text-bright);
}

.collection-card-description {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-top: var(--space-1);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.collection-card-footer {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

/* Collection detail — book grid actions */
.collection-book-card {
  position: relative;
}

.collection-book-card .remove-from-collection {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  z-index: 2;
  background: rgba(0,0,0,0.7);
  border: none;
  color: var(--color-danger);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}

.collection-book-card:hover .remove-from-collection {
  opacity: 1;
}

.collection-book-card .remove-from-collection:hover {
  background: var(--color-danger);
  color: white;
}

/* --- Global Search Overlay --- */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
  animation: fadeIn var(--transition-fast) forwards;
}

.search-overlay-container {
  width: 100%;
  max-width: 600px;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  animation: modalIn var(--transition-base) forwards;
}

.search-overlay-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
}

.search-overlay-input-wrap .search-icon {
  color: var(--color-teal-bright);
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.search-overlay-input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: var(--text-lg);
  font-family: var(--font-body);
  outline: none;
}

.search-overlay-input-wrap input::placeholder {
  color: var(--color-muted);
}

.search-overlay-input-wrap .search-shortcut-hint {
  font-size: var(--text-xs);
  color: var(--color-muted);
  background: var(--color-bg);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
}

.search-overlay-results {
  max-height: 60vh;
  overflow-y: auto;
  padding: var(--space-3) 0;
}

.search-overlay-results:empty::after {
  content: 'Type to search authors, series, and books...';
  display: block;
  text-align: center;
  padding: var(--space-8);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.search-results-group {
  padding: 0;
}

.search-results-group-label {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-teal-bright);
  background: var(--color-bg-elevated);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  cursor: pointer;
  transition: background var(--transition-fast);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.search-result-item:hover,
.search-result-item.highlighted {
  background: var(--color-surface-hover);
}

.search-result-item .result-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.search-result-item .result-icon svg {
  width: 16px;
  height: 16px;
}

.search-result-item .result-text {
  flex: 1;
  min-width: 0;
}

.search-result-item .result-name {
  font-weight: var(--weight-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-result-item .result-subtitle {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: 1px;
}

.search-no-results {
  text-align: center;
  padding: var(--space-8);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

/* --- Sidebar Search Button --- */
.sidebar-search-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: calc(100% - var(--space-6) * 2);
  margin: var(--space-2) var(--space-6);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-search-btn:hover {
  border-color: var(--color-teal-bright);
  color: var(--color-text);
}

.sidebar-search-btn .nav-icon {
  width: 16px;
  height: 16px;
}

.sidebar-search-btn .search-slash-hint {
  margin-left: auto;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  background: var(--color-surface-hover);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  line-height: 1.4;
}

/* --- Server Info Badge on Login --- */
.login-server-info {
  text-align: center;
  margin-bottom: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.login-server-info .badge {
  font-size: var(--text-xs);
}

/* --- Invite Code Field --- */
.invite-code-group {
  margin-bottom: var(--space-5);
}

/* --- Add to Collection Dropdown --- */
.add-to-collection-wrap {
  position: relative;
  display: inline-block;
}

.add-to-collection-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: var(--space-2);
  min-width: 240px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  overflow: hidden;
  animation: modalIn var(--transition-fast) forwards;
}

.add-to-collection-dropdown .dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  transition: background var(--transition-fast);
}

.add-to-collection-dropdown .dropdown-item:hover {
  background: var(--color-surface-hover);
}

.add-to-collection-dropdown .dropdown-item .nav-icon {
  color: var(--color-teal-bright);
}

.add-to-collection-dropdown .dropdown-divider {
  height: 1px;
  background: var(--color-border-subtle);
  margin: var(--space-1) 0;
}

/* --- Form Toggle/Checkbox Switch --- */
.form-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.form-toggle input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 40px;
  height: 22px;
  background: var(--color-surface-active);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.form-toggle input[type="checkbox"]::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: white;
  top: 3px;
  left: 3px;
  transition: transform var(--transition-fast);
}

.form-toggle input[type="checkbox"]:checked {
  background: var(--color-teal);
}

.form-toggle input[type="checkbox"]:checked::before {
  transform: translateX(18px);
}

/* --- Responsive: Search + Dashboard --- */
@media (max-width: 768px) {
  .continue-reading-card {
    flex: 0 0 130px;
  }

  .grid-collections {
    grid-template-columns: 1fr;
  }

  .search-overlay {
    padding-top: var(--space-4);
  }

  .search-overlay-container {
    max-width: calc(100vw - var(--space-8));
    margin: 0 var(--space-4);
  }
}

@media (max-width: 480px) {
  .continue-reading-card {
    flex: 0 0 110px;
  }
}

/* --- Stats Dashboard --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-5);
  position: relative;
  overflow: hidden;
}

.stat-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-1);
}

.stat-card-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-bright);
  line-height: 1.1;
  font-family: var(--font-mono);
}

.stat-card-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.stat-card-skeleton {
  border-radius: var(--radius-lg);
}

/* --- Activity Timeline --- */
.activity-timeline {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  overflow: hidden;
}

.activity-entry {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background var(--transition-fast);
}

.activity-entry:last-child {
  border-bottom: none;
}

.activity-entry:hover {
  background: var(--color-surface-hover);
}

.activity-entry-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.activity-entry-content {
  flex: 1;
  min-width: 0;
}

.activity-entry-description {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: var(--weight-regular);
}

.activity-entry-description strong {
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
}

.activity-entry-time {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: 2px;
}

/* --- Metadata Match Cards --- */
.metadata-matches {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-height: 50vh;
  overflow-y: auto;
}

.metadata-match-card {
  padding: var(--space-4);
}

.metadata-match-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.metadata-match-info {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.metadata-match-cover {
  float: right;
  width: 64px;
  margin: 0 0 var(--space-3) var(--space-3);
}

.metadata-match-cover img {
  width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.metadata-match-title {
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
  color: var(--color-text-bright);
  margin-bottom: var(--space-1);
}

.metadata-match-description {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  line-height: var(--leading-relaxed);
  margin-top: var(--space-2);
  clear: both;
}

.badge-info {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-info);
}

/* --- Import/Export Section --- */
.settings-section .card h4 {
  font-size: var(--text-base);
  color: var(--color-text-bright);
}

/* --- Stats + Activity Responsive --- */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .stat-card {
    padding: var(--space-4);
  }

  .stat-card-value {
    font-size: var(--text-xl);
  }

  .stat-card-icon {
    width: 32px;
    height: 32px;
  }

  .activity-entry {
    padding: var(--space-3) var(--space-4);
  }

  .metadata-match-cover {
    width: 48px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   New Feature Styles
   ============================================================ */

/* --- Star Rating Widget --- */
.star-rating-widget {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  cursor: pointer;
  padding: var(--space-1) 0;
}

.star-rating-widget.readonly {
  cursor: default;
}

.star-rating-widget .star-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--color-border);
  font-size: 22px;
  line-height: 1;
  transition: color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.star-rating-widget .star-btn:hover {
  transform: scale(1.15);
}

.star-rating-widget .star-btn.filled {
  color: var(--color-warning);
}

.star-rating-widget .star-btn.half {
  color: var(--color-border);
}

.star-rating-widget .star-btn.half::before {
  content: '\2605';
  position: absolute;
  left: 0;
  top: 0;
  width: 50%;
  overflow: hidden;
  color: var(--color-warning);
}

.star-rating-widget .star-btn.hovered {
  color: var(--color-warning);
  opacity: 0.7;
}

.star-rating-widget.readonly .star-btn {
  cursor: default;
}

.star-rating-widget.readonly .star-btn:hover {
  transform: none;
}

.rating-summary {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.rating-summary-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-warning);
  font-family: var(--font-mono);
}

.rating-summary-meta {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

/* --- Reviews Section --- */
.reviews-section {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
}

.reviews-section h3 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.review-card {
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  position: relative;
}

.review-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.review-card-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.review-card-user .user-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: white;
  flex-shrink: 0;
}

.review-card-user .username {
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
  color: var(--color-text-bright);
}

.review-card-user .review-date {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.review-card-actions {
  display: flex;
  gap: var(--space-2);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.review-title {
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
  color: var(--color-text-bright);
  margin-bottom: var(--space-2);
}

.review-body {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  line-height: var(--leading-relaxed);
}

.spoiler-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-warning);
  background: rgba(245, 158, 11, 0.12);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.spoiler-hidden {
  filter: blur(6px);
  user-select: none;
  cursor: pointer;
  transition: filter var(--transition-base);
}

.spoiler-hidden:hover {
  filter: blur(3px);
}

.spoiler-hidden.revealed {
  filter: none;
  user-select: auto;
  cursor: default;
}

/* --- Reading Queue --- */
.queue-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.queue-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.queue-item:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border);
}

.queue-item.dragging {
  opacity: 0.5;
  box-shadow: var(--shadow-lg);
  border-color: var(--color-teal-bright);
}

.queue-item-drag {
  cursor: grab;
  color: var(--color-muted);
  padding: var(--space-1);
  display: flex;
  flex-shrink: 0;
  touch-action: none;
}

.queue-item-drag:active {
  cursor: grabbing;
}

.queue-item-position {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  flex-shrink: 0;
}

.queue-item-cover {
  width: 40px;
  height: 60px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.queue-item-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.queue-item-title {
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.queue-item-author {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: 2px;
}

.queue-item-actions {
  display: flex;
  gap: var(--space-1);
  flex-shrink: 0;
}

.queue-item-actions .btn-icon {
  width: 28px;
  height: 28px;
}

.nav-badge {
  background: var(--color-teal);
  color: white;
  font-size: 10px;
  font-weight: var(--weight-bold);
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}

/* --- Reading Goals & Stats --- */
.reading-goal-card {
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

.reading-goal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.reading-goal-progress {
  height: 12px;
  background: var(--color-surface-hover);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-3);
}

.reading-goal-progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-teal), var(--color-teal-bright));
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.reading-goal-counts {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.reading-goal-counts strong {
  color: var(--color-text-bright);
}

.year-in-books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.year-in-books-grid .mini-cover {
  aspect-ratio: 2/3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
  cursor: pointer;
}

.year-in-books-grid .mini-cover:hover {
  transform: translateY(-2px);
}

.year-in-books-grid .mini-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.monthly-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  height: 160px;
  padding-top: var(--space-4);
  margin: var(--space-6) 0;
}

.monthly-chart-bar {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  height: 100%;
  justify-content: flex-end;
}

.monthly-chart-bar .bar {
  width: 100%;
  max-width: 40px;
  background: var(--color-teal);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: height 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 2px;
  position: relative;
}

.monthly-chart-bar .bar:hover {
  background: var(--color-teal-bright);
}

.monthly-chart-bar .bar-label {
  font-size: 10px;
  color: var(--color-text-bright);
  font-weight: var(--weight-semibold);
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}

.monthly-chart-bar .month-label {
  font-size: 10px;
  color: var(--color-muted);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
}

/* Reading streak */
.streak-display {
  display: flex;
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

.streak-card {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
}

.streak-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.streak-card-value {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-bright);
  line-height: 1.1;
}

.streak-card-label {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

/* Formats pie chart (conic-gradient) */
.formats-pie {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  position: relative;
  margin: var(--space-4) auto;
}

.formats-pie-inner {
  position: absolute;
  inset: 20px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

.formats-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: center;
  margin-top: var(--space-3);
}

.formats-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-dim);
}

.formats-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* Stats tab nav */
.tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.tab-nav-item {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  font-family: var(--font-body);
}

.tab-nav-item:hover {
  color: var(--color-text);
}

.tab-nav-item.active {
  color: var(--color-teal-bright);
  border-bottom-color: var(--color-teal-bright);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: pageEnter var(--transition-base) forwards;
}

/* --- Highlights --- */
.highlights-group {
  margin-bottom: var(--space-8);
}

.highlights-group-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-subtle);
}

.highlights-group-header h3 {
  font-size: var(--text-base);
  flex: 1;
}

.highlights-group-header a {
  font-size: var(--text-sm);
}

.highlight-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  border-left: 4px solid var(--color-warning);
}

.highlight-card.highlight-yellow { border-left-color: #f59e0b; }
.highlight-card.highlight-green  { border-left-color: #22c55e; }
.highlight-card.highlight-blue   { border-left-color: #3b82f6; }
.highlight-card.highlight-pink   { border-left-color: #ec4899; }
.highlight-card.highlight-purple { border-left-color: #8b5cf6; }

.highlight-card-content {
  flex: 1;
  min-width: 0;
}

.highlight-text {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: var(--leading-relaxed);
  font-style: italic;
  margin-bottom: var(--space-2);
  padding: var(--space-3);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
}

.highlight-note {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  margin-bottom: var(--space-2);
}

.highlight-meta {
  font-size: var(--text-xs);
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.color-filter-pills {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.color-filter-pill {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.color-filter-pill:hover {
  transform: scale(1.1);
}

.color-filter-pill.active {
  border-color: white;
  box-shadow: 0 0 0 2px var(--color-teal-bright);
}

.color-filter-pill.pill-all {
  background: linear-gradient(135deg, #f59e0b, #22c55e, #3b82f6, #ec4899, #8b5cf6);
}

.color-filter-pill.pill-yellow { background: #f59e0b; }
.color-filter-pill.pill-green  { background: #22c55e; }
.color-filter-pill.pill-blue   { background: #3b82f6; }
.color-filter-pill.pill-pink   { background: #ec4899; }
.color-filter-pill.pill-purple { background: #8b5cf6; }

/* --- Genre Browse --- */
.grid-genres {
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
}

.genre-card {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 48px;
  color: white;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

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

.genre-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-3) 0;
}

.genre-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  color: white;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.genre-chip:hover {
  transform: translateY(-1px);
  opacity: 0.9;
  color: white;
}

/* --- Webhooks --- */
.webhook-card {
  padding: var(--space-4) var(--space-5);
}

.webhook-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.webhook-card-name {
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
}

.webhook-card-url {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: var(--space-3);
}

.webhook-events {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.delivery-history {
  max-height: 300px;
  overflow-y: auto;
}

.delivery-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  border-bottom: 1px solid var(--color-border-subtle);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.delivery-item:hover {
  background: var(--color-surface-hover);
}

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

.delivery-status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.delivery-status-dot.success { background: var(--color-success); }
.delivery-status-dot.failure { background: var(--color-danger); }
.delivery-status-dot.pending { background: var(--color-warning); }

.delivery-detail {
  padding: var(--space-3);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 200px;
  overflow-y: auto;
}

/* Checkboxes for webhook events */
.event-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-2);
}

.event-checkbox-grid label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.event-checkbox-grid label:hover {
  background: var(--color-surface-hover);
}

.event-checkbox-grid input[type="checkbox"] {
  accent-color: var(--color-teal-bright);
  width: 16px;
  height: 16px;
}

/* --- OIDC / SSO --- */
.login-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-5) 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.login-divider::before,
.login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.btn-sso {
  width: 100%;
  min-height: 44px;
  font-size: var(--text-base);
  background: var(--color-surface-hover);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.btn-sso:hover {
  background: var(--color-surface-active);
  border-color: var(--color-teal-bright);
}

/* --- Duplicate Detection --- */
.duplicate-group {
  margin-bottom: var(--space-6);
}

.duplicate-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.duplicate-group-reason {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.duplicate-books-row {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  padding-bottom: var(--space-2);
}

.duplicate-book-card {
  flex: 0 0 160px;
  text-align: center;
}

.duplicate-book-card .book-cover {
  height: 200px;
  width: 133px;
  margin: 0 auto var(--space-3);
  box-shadow: var(--shadow-sm);
}

.duplicate-book-card .book-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: var(--space-2);
}

.duplicate-book-card .book-meta {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-bottom: var(--space-3);
}

/* --- Format Conversion --- */
.convert-dropdown-wrap {
  position: relative;
  display: inline-block;
}

.convert-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: var(--space-2);
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  overflow: hidden;
  animation: modalIn var(--transition-fast) forwards;
}

.convert-dropdown .dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  transition: background var(--transition-fast);
}

.convert-dropdown .dropdown-item:hover {
  background: var(--color-surface-hover);
}

.conversion-status {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin: var(--space-4) 0;
}

.conversion-status .progress-bar {
  flex: 1;
}

/* --- Library Access Control --- */
.library-access-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.library-access-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.library-access-item:hover {
  background: var(--color-surface-hover);
}

.library-access-item label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  flex: 1;
  font-size: var(--text-sm);
}

/* --- Reading Preferences --- */
.reader-prefs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-4);
}

.reader-pref-card {
  padding: var(--space-4);
}

.reader-pref-card h4 {
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

.reader-pref-option-group {
  display: flex;
  gap: var(--space-2);
}

.reader-pref-option {
  flex: 1;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text-dim);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}

.reader-pref-option:hover {
  border-color: var(--color-teal-bright);
}

.reader-pref-option.active {
  border-color: var(--color-teal-bright);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
}

.font-size-slider {
  width: 100%;
  accent-color: var(--color-teal-bright);
  cursor: pointer;
}

.font-size-value {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
  text-align: center;
  margin-top: var(--space-2);
}

/* --- Modal wide variant --- */
.modal.modal-wide {
  max-width: 640px;
}

.modal.modal-narrow {
  max-width: 400px;
}

/* --- Responsive: New Feature Styles --- */
@media (max-width: 768px) {
  .grid-genres {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  }

  .monthly-chart {
    height: 120px;
  }

  .streak-display {
    flex-direction: column;
    gap: var(--space-3);
  }

  .year-in-books-grid {
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: var(--space-2);
  }

  .duplicate-books-row {
    gap: var(--space-3);
  }

  .duplicate-book-card {
    flex: 0 0 130px;
  }

  .duplicate-book-card .book-cover {
    height: 160px;
    width: 107px;
  }

  .reader-prefs-grid {
    grid-template-columns: 1fr;
  }

  .event-checkbox-grid {
    grid-template-columns: 1fr;
  }

  .review-card-actions {
    opacity: 1;
  }

  .queue-item {
    padding: var(--space-2) var(--space-3);
  }
}

@media (max-width: 480px) {
  .grid-genres {
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  }

  .genre-card {
    font-size: var(--text-xs);
    padding: var(--space-3) var(--space-2);
    min-height: 40px;
  }
}

/* --- Read Button (teal-bright accent) --- */
.btn-read {
  background: var(--color-teal-bright);
  color: var(--color-bg);
  font-weight: var(--weight-semibold);
}

.btn-read:hover {
  background: #4bc6dc;
  box-shadow: var(--shadow-glow-teal);
  color: var(--color-bg);
}

/* ============================================================
   Acquisition Engine
   ============================================================ */

/* --- Tab Bar --- */
.acq-tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.acq-tabs::-webkit-scrollbar {
  display: none;
}

.acq-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  margin-bottom: -1px;
}

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

.acq-tab.active {
  color: var(--color-teal-bright);
  border-bottom-color: var(--color-teal-bright);
}

.acq-tab .nav-icon {
  width: 16px;
  height: 16px;
}

/* --- Search Bar --- */
.acq-search-bar {
  margin-bottom: var(--space-6);
}

.acq-search-fields {
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
}

/* --- Results List --- */
.acq-results-header {
  margin-bottom: var(--space-3);
}

.acq-results-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.acq-results-modal {
  max-height: 400px;
  overflow-y: auto;
}

.acq-result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background var(--transition-fast);
}

.acq-result-row:last-child {
  border-bottom: none;
}

.acq-result-row:hover {
  background: var(--color-surface-hover);
}

.acq-result-info {
  flex: 1;
  min-width: 0;
}

.acq-result-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-bright);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.acq-result-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-muted);
  flex-wrap: wrap;
}

.acq-result-meta .nav-icon {
  width: 12px;
  height: 12px;
  display: inline-flex;
  vertical-align: middle;
}

.acq-seeders {
  color: var(--color-success);
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.acq-seeders svg {
  width: 10px;
  height: 10px;
}

.acq-leechers {
  color: var(--color-danger);
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.acq-leechers svg {
  width: 10px;
  height: 10px;
}

/* --- Wanted Cards --- */
.acq-wanted-section {
  margin-bottom: var(--space-4);
}

.acq-wanted-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.acq-wanted-card {
  padding: var(--space-4) var(--space-5);
}

.acq-wanted-fulfilled {
  opacity: 0.6;
}

.acq-wanted-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.acq-wanted-card-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
}

.acq-wanted-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
  flex-wrap: wrap;
}

.acq-wanted-card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* --- Download Cards --- */
.acq-downloads-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.acq-download-card {
  padding: var(--space-4) var(--space-5);
}

.acq-download-active {
  border-color: var(--color-teal);
}

.acq-download-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.acq-download-info {
  flex: 1;
  min-width: 0;
}

.acq-download-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.acq-download-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
  flex-wrap: wrap;
}

.acq-download-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* --- Download Progress Bars --- */
.acq-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-surface-hover);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--space-3);
}

.acq-progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  position: relative;
}

.acq-progress-downloading .acq-progress-fill {
  background: var(--color-info);
  animation: acqProgressPulse 2s ease-in-out infinite;
}

.acq-progress-pending .acq-progress-fill {
  background: var(--color-muted);
}

.acq-progress-importing .acq-progress-fill {
  background: var(--color-warning);
  animation: acqProgressPulse 1.5s ease-in-out infinite;
}

.acq-progress-imported .acq-progress-fill {
  background: var(--color-success);
}

.acq-progress-failed .acq-progress-fill {
  background: var(--color-danger);
}

.acq-progress-label {
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin-top: var(--space-1);
  text-align: right;
}

@keyframes acqProgressPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* --- Indexer Cards --- */
.acq-indexer-list,
.acq-client-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.acq-indexer-card,
.acq-client-card {
  padding: var(--space-4) var(--space-5);
}

.acq-indexer-header,
.acq-client-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.acq-indexer-type-icon,
.acq-client-type-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.acq-indexer-info,
.acq-client-info {
  flex: 1;
  min-width: 0;
}

.acq-indexer-name,
.acq-client-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
}

.acq-indexer-meta,
.acq-client-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
  flex-wrap: wrap;
}

.acq-indexer-actions,
.acq-client-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* --- Responsive: Acquisition --- */
@media (max-width: 768px) {
  .acq-search-fields {
    flex-direction: column;
  }

  .acq-search-fields .form-group {
    flex: unset !important;
  }

  .acq-result-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .acq-result-row .acq-grab-btn {
    align-self: flex-end;
  }

  .acq-wanted-card-header,
  .acq-download-header {
    flex-direction: column;
    gap: var(--space-3);
  }

  .acq-wanted-card-actions,
  .acq-download-actions {
    align-self: flex-end;
  }

  .acq-indexer-header,
  .acq-client-header {
    flex-wrap: wrap;
  }

  .acq-indexer-actions,
  .acq-client-actions {
    width: 100%;
    justify-content: flex-end;
    margin-top: var(--space-2);
  }

  .acq-tab {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }

  .acq-tab span:last-child {
    display: none;
  }
}

@media (min-width: 769px) {
  .acq-tab span:last-child {
    display: inline;
  }
}

/* ============================================================
   Folder Picker — modal-within-modal for browsing server dirs
   ============================================================ */

.folder-picker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 220;
  padding: var(--space-4);
  animation: fadeIn var(--transition-fast) forwards;
}

.folder-picker {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  animation: modalIn var(--transition-base) forwards;
  overflow: hidden;
}

.folder-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  flex-shrink: 0;
}

.folder-picker-header h3 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-bright);
  margin: 0;
}

.folder-picker-close {
  background: none;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.folder-picker-close:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.folder-picker-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.folder-picker-roots {
  flex-shrink: 0;
}

.folder-picker-roots select {
  padding: var(--space-2) var(--space-3);
  padding-right: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.folder-picker-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-dim);
  scrollbar-width: none;
}

.folder-picker-breadcrumb::-webkit-scrollbar {
  display: none;
}

.folder-picker-breadcrumb-segment {
  background: none;
  border: none;
  color: var(--color-teal-bright);
  cursor: pointer;
  padding: var(--space-1) var(--space-1);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  white-space: nowrap;
  transition: background var(--transition-fast);
}

.folder-picker-breadcrumb-segment:hover {
  background: var(--color-surface-hover);
}

.folder-picker-breadcrumb-separator {
  color: var(--color-muted);
  flex-shrink: 0;
}

.folder-picker-manual {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  flex-shrink: 0;
}

.folder-picker-manual input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  transition: border-color var(--transition-fast);
}

.folder-picker-manual input:focus {
  outline: none;
  border-color: var(--color-teal-bright);
  box-shadow: 0 0 0 2px rgba(59, 179, 201, 0.1);
}

.folder-picker-manual .btn {
  flex-shrink: 0;
}

.folder-picker-listing {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2) 0;
  min-height: 200px;
  max-height: 360px;
}

.folder-picker-loading,
.folder-picker-empty,
.folder-picker-error {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  color: var(--color-muted);
  font-size: var(--text-sm);
  text-align: center;
  gap: var(--space-2);
}

.folder-picker-error {
  color: var(--color-danger);
}

.folder-picker-entry {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-5);
  cursor: pointer;
  transition: background var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  color: var(--color-text);
  font-size: var(--text-sm);
  font-family: var(--font-body);
}

.folder-picker-entry:hover {
  background: var(--color-surface-hover);
}

.folder-picker-entry:focus-visible {
  background: var(--color-surface-hover);
  outline: 2px solid var(--color-teal-bright);
  outline-offset: -2px;
}

.folder-picker-entry-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--color-teal-bright);
}

.folder-picker-entry-icon.is-calibre {
  color: var(--color-success);
}

.folder-picker-entry-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.folder-picker-entry-badge {
  flex-shrink: 0;
  font-size: var(--text-xs);
  color: var(--color-success);
  padding: 1px var(--space-2);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-full);
  line-height: 1.4;
}

.folder-picker-up {
  color: var(--color-muted);
  font-style: italic;
}

.folder-picker-up .folder-picker-entry-icon {
  color: var(--color-muted);
}

.folder-picker-footer {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border-subtle);
  flex-shrink: 0;
  background: var(--color-bg-elevated);
}

.folder-picker-selected {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.folder-picker-selected-path {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.folder-picker-validation {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
}

.folder-picker-validation.is-valid {
  color: var(--color-success);
}

.folder-picker-validation.is-invalid {
  color: var(--color-danger);
}

.folder-picker-validation .nav-icon {
  width: 14px;
  height: 14px;
}

.form-input-with-button {
  display: flex;
  gap: var(--space-2);
}

.form-input-with-button .form-input {
  flex: 1;
  min-width: 0;
}

.form-input-with-button .btn {
  flex-shrink: 0;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .folder-picker {
    max-width: 100%;
    max-height: 90vh;
    border-radius: var(--radius-lg);
  }

  .folder-picker-toolbar {
    padding: var(--space-2) var(--space-3);
  }

  .folder-picker-manual {
    padding: var(--space-2) var(--space-3);
  }

  .folder-picker-entry {
    padding: var(--space-2) var(--space-3);
  }

  .folder-picker-footer {
    padding: var(--space-3);
    flex-wrap: wrap;
  }
}

/* ============================================================
   Device Integration Cards (Settings)
   ============================================================ */

.device-integration-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.device-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.device-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.device-card-header h4 {
  margin: 0;
  font-size: var(--text-md);
}

.device-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--color-teal-dim);
  color: var(--color-teal-bright);
  flex-shrink: 0;
}

.device-card-icon svg {
  width: 18px;
  height: 18px;
}

.device-url-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.device-url {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--color-bg);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: var(--color-teal-bright);
  word-break: break-all;
  line-height: var(--leading-normal);
}

/* ============================================================
   Tab Bar (Genre sub-navigation, reusable)
   ============================================================ */

.tab-bar {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-dim);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.tab-btn.active {
  color: var(--color-teal-bright);
  border-bottom-color: var(--color-teal-bright);
}

.tab-btn .nav-icon {
  width: 16px;
  height: 16px;
}

/* ============================================================
   Bookmarks Page
   ============================================================ */

.bookmarks-group {
  margin-bottom: var(--space-6);
}

.bookmarks-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-subtle);
}

.bookmarks-group-header h3 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-md);
  margin: 0;
}

.bookmark-card {
  margin-bottom: var(--space-3);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.bookmark-card:hover {
  border-color: var(--color-teal);
  background: var(--color-surface-hover);
}

.bookmark-card-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.bookmark-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.bookmark-icon {
  display: flex;
  color: var(--color-teal-bright);
}

.bookmark-icon svg {
  width: 16px;
  height: 16px;
}

.bookmark-locator {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  background: var(--color-bg-elevated);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.bookmark-note {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: var(--leading-relaxed);
}

.bookmark-meta {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

/* ============================================================
   API Key Usage Guide
   ============================================================ */

.key-usage-guide {
  margin-top: var(--space-4);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.key-usage-guide summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-dim);
  cursor: pointer;
  background: var(--color-bg-elevated);
  transition: background var(--transition-fast);
  list-style: none;
}

.key-usage-guide summary::-webkit-details-marker {
  display: none;
}

.key-usage-guide summary::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid currentColor;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.key-usage-guide[open] summary::before {
  transform: rotate(90deg);
}

.key-usage-guide summary:hover {
  background: var(--color-surface-hover);
}

.key-usage-guide-content {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.key-usage-item h4 {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.key-usage-item p {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin: 0;
}

.key-usage-code {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-bg);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: var(--color-teal-bright);
  word-break: break-all;
  line-height: var(--leading-normal);
}

/* ============================================================
   Change Password Form Error
   ============================================================ */

.form-error {
  font-size: var(--text-sm);
  color: var(--color-danger);
  padding: var(--space-2) var(--space-3);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm);
}

.form-error.hidden {
  display: none;
}

/* ============================================================
   Responsive adjustments for new components
   ============================================================ */

@media (min-width: 768px) {
  .device-integration-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .tab-bar {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tab-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }

  .device-url {
    font-size: var(--text-xs);
  }

  .bookmarks-group-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
}