:root {
   --safe-top: var(--safe-area-inset-top, env(safe-area-inset-top, 0px));
   --safe-right: var(--safe-area-inset-right, env(safe-area-inset-right, 0px));
   --safe-bottom: var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px));
   --safe-left: var(--safe-area-inset-left, env(safe-area-inset-left, 0px));
   --library-bg-image: url('./public/assets/dnd_library_bg.png');
   --glass-surface-bg: rgba(255, 255, 255, 0.08);
   --glass-surface-bg-hover: rgba(255, 255, 255, 0.16);
   --glass-surface-bg-focus: rgba(255, 255, 255, 0.12);
   --glass-surface-blur: blur(12px);
   --glass-accent: #ffd700;
   --glass-accent-muted: rgba(255, 215, 0, 0.55);
   --glass-shadow-hover: 0 0 10px rgba(255, 215, 0, 0.25);
   --glass-panel-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
   --glass-btn-height: 42px;
   --glass-btn-padding-y: 10px;
   --glass-btn-border: 1px solid rgba(255, 255, 255, 0.1);
   --glass-btn-radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

input,
textarea,
[contenteditable="true"] {
    -webkit-user-select: text;
    user-select: text;
    -webkit-touch-callout: default;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #07080d;
    color: #e8ebf3;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    padding-left: var(--safe-left);
    padding-right: var(--safe-right);
}

body.light-mode {
    background: #f3f5fb;
    color: #1d2938;
    --glass-surface-bg: rgba(15, 23, 42, 0.06);
    --glass-surface-bg-hover: rgba(15, 23, 42, 0.12);
    --glass-surface-bg-focus: rgba(15, 23, 42, 0.1);
    --glass-accent: #1e1b4b;
    --glass-accent-muted: rgba(30, 27, 75, 0.55);
    --glass-shadow-hover: none;
    --glass-panel-shadow: 0 8px 32px rgba(15, 23, 42, 0.12);
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    min-height: 0;
    background: #08090f;
}

body.light-mode .app-container {
    background: #f8faff;
}

/* Utility classes */
.hidden {
    display: none !important;
}

/* Header & Upload Section */
.header {
    position: relative;
    background-image: linear-gradient(rgba(15, 12, 41, 0.75), rgba(36, 36, 62, 0.58)), var(--library-bg-image);
    background-size: cover;
    background-position: center 25%;
    padding: 20px 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    z-index: 10;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.3s ease;
}

body.light-mode .header {
    background-image: linear-gradient(rgba(253, 251, 247, 0.76), rgba(240, 236, 224, 0.84)), var(--library-bg-image);
    border-bottom: 1px solid rgba(139, 92, 246, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.header-glow {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, #d97706 25%, #6366f1 50%, #2563eb 75%, transparent 100%);
    opacity: 0.8;
}

body.light-mode .header-glow {
    background: linear-gradient(90deg, transparent 0%, #7c3aed 30%, #3b82f6 70%, transparent 100%);
    opacity: 0.5;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-left: auto;
}

.app-title {
    font-family: 'Cinzel', serif;
    font-weight: 800;
    font-size: 28px;
    letter-spacing: 0.04em;
    background: linear-gradient(135deg, #ffd700 0%, #ff9f1c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
    margin: 0;
}

body.light-mode .app-title {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: none;
}

/* Header Right Controls (dropdown + theme switch) */
.header-right-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.renderer-select-container.hidden,
body.simple-renderer-only .renderer-select-container,
body.simple-renderer-only #profile-renderer-item {
    display: none !important;
}

.renderer-select-container {
    /* Profile popout row; legacy class kept for platform hide logic */
}

.profile-renderer-select {
    min-width: 108px;
    max-width: 132px;
    padding: 0 10px;
    height: 28px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    color: #e2e8f0;
    font-size: 12px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
    outline: none;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.profile-renderer-select:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.16);
}

body.light-mode .profile-renderer-select {
    border-color: rgba(15, 23, 42, 0.1);
    background: rgba(15, 23, 42, 0.04);
    color: #1e293b;
}

body.light-mode .profile-renderer-select:focus {
    background: rgba(15, 23, 42, 0.08);
    border-color: rgba(15, 23, 42, 0.14);
}

.profile-menu-renderer .glass-select {
    min-width: 108px;
    max-width: 132px;
}

.profile-menu-renderer .glass-select-trigger {
    height: 28px;
    padding: 0 10px;
    font-size: 12px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.profile-menu-renderer .glass-select-trigger:hover,
.profile-menu-renderer .glass-select-trigger:focus-visible {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.16);
}

body.light-mode .profile-menu-renderer .glass-select-trigger {
    border-color: rgba(15, 23, 42, 0.1);
    background: rgba(15, 23, 42, 0.04);
    color: #1e293b;
}

body.light-mode .profile-menu-renderer .glass-select-trigger:hover,
body.light-mode .profile-menu-renderer .glass-select-trigger:focus-visible {
    background: rgba(15, 23, 42, 0.08);
    border-color: rgba(15, 23, 42, 0.14);
}

/* Renderer select opens upward inside the bottom-anchored profile popout */
.sidebar-profile-dropdown .glass-select {
    position: relative;
    z-index: 1;
}

.sidebar-profile-dropdown .glass-select.is-open {
    z-index: 20;
}

.sidebar-profile-dropdown .glass-select-menu {
    top: auto;
    bottom: calc(100% + 6px);
    z-index: 30;
    transform: translateY(4px);
}

.sidebar-profile-dropdown .glass-select.is-open .glass-select-menu {
    transform: translateY(0);
}

/* Custom glass dropdown (renderer) — see ui/glass-select.js */
.glass-select {
    position: relative;
    min-width: 132px;
}

.glass-select-native {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
    opacity: 0 !important;
    pointer-events: none !important;
}

.glass-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    min-width: 132px;
    padding: 0 34px 0 12px;
    height: var(--glass-btn-height);
    background: var(--glass-surface-bg);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    color: var(--glass-accent);
    font-size: 12.5px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    box-shadow: none;
    outline: none;
    position: relative;
}

.glass-select-trigger::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--glass-accent-muted);
    border-bottom: 2px solid var(--glass-accent-muted);
    transform: translateY(-65%) rotate(45deg);
    transition: transform 0.2s ease;
    pointer-events: none;
}

.glass-select.is-open .glass-select-trigger::after {
    transform: translateY(-25%) rotate(225deg);
}

.glass-select.is-disabled .glass-select-trigger {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.glass-select-trigger:hover,
.glass-select.is-open .glass-select-trigger {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

.glass-select-trigger:focus-visible {
    background: var(--glass-surface-bg-focus);
    box-shadow: var(--glass-shadow-hover);
}

.glass-select-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    margin: 0;
    padding: 6px;
    list-style: none;
    border-radius: 12px;
    background: var(--glass-surface-bg);
    border: none;
    box-shadow: var(--glass-panel-shadow);
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    z-index: 40;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}

.glass-select.is-open .glass-select-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.glass-select-option {
    padding: 9px 10px;
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.88);
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.glass-select-option:hover,
.glass-select-option.is-selected {
    background: var(--glass-surface-bg-hover);
    color: var(--glass-accent);
}

body.light-mode .glass-select-option {
    color: #1e293b;
}

body.light-mode .glass-select-option:hover,
body.light-mode .glass-select-option.is-selected {
    background: var(--glass-surface-bg-hover);
    color: var(--glass-accent);
}

/* Legacy native select fallback if glass enhancement is unavailable */
select.renderer-select:not(.glass-select-native) {
    padding: 0 12px;
    height: var(--glass-btn-height);
    background: var(--glass-surface-bg);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    color: var(--glass-accent);
    font-size: 12.5px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    outline: none;
}

select.renderer-select:not(.glass-select-native):focus {
    background: var(--glass-surface-bg-focus);
    box-shadow: var(--glass-shadow-hover);
}

select.renderer-select:not(.glass-select-native) option {
    background: #0f1115;
    color: #e2e8f0;
}

body.light-mode select.renderer-select:not(.glass-select-native) option {
    background: #ffffff;
    color: #1e293b;
}

/* Custom Sun/Moon Theme Toggle Switch */
.theme-switch-container {
    display: flex;
    align-items: center;
}

/* --- Sidebar profile footer (bookmarks menu) --- */

.sidebar-profile-footer {
    position: relative;
    flex-shrink: 0;
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 12px 14px calc(12px + var(--safe-bottom));
}

body.light-mode .sidebar-profile-footer {
    border-top-color: rgba(0, 0, 0, 0.06);
}

.sidebar-profile-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 40px;
}

.sidebar-profile-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    flex-shrink: 0;
    color: #c4b5fd;
    position: relative;
    overflow: hidden;
}

body.light-mode .sidebar-profile-avatar {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.2);
    color: #7c3aed;
}

.sidebar-profile-avatar.profile-avatar--pro {
    background: linear-gradient(145deg, rgba(255, 215, 0, 0.22) 0%, rgba(180, 83, 9, 0.28) 100%);
    border-color: rgba(255, 215, 0, 0.55);
    color: #ffd700;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.25), inset 0 0 8px rgba(255, 215, 0, 0.12);
}

body.light-mode .sidebar-profile-avatar.profile-avatar--pro {
    background: linear-gradient(145deg, rgba(255, 215, 0, 0.28) 0%, rgba(245, 158, 11, 0.2) 100%);
    border-color: rgba(180, 83, 9, 0.4);
    color: #b45309;
    box-shadow: 0 0 8px rgba(217, 119, 6, 0.2), inset 0 0 6px rgba(255, 215, 0, 0.15);
}

.sidebar-profile-icon {
    width: 18px;
    height: 18px;
}

.sidebar-profile-icon--pro {
    width: 20px;
    height: 20px;
}

.sidebar-profile-avatar .sidebar-profile-icon--free {
    display: block;
}

.sidebar-profile-avatar .sidebar-profile-icon--pro {
    display: none;
}

.sidebar-profile-avatar.profile-avatar--pro .sidebar-profile-icon--free {
    display: none;
}

.sidebar-profile-avatar.profile-avatar--pro .sidebar-profile-icon--pro {
    display: block;
}

.sidebar-profile-identity {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.sidebar-profile-name {
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: #f1f5f9;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

body.light-mode .sidebar-profile-name {
    color: #1e293b;
}

.sidebar-profile-status {
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: #94a3b8;
    line-height: 1.3;
}

body.light-mode .sidebar-profile-status {
    color: #64748b;
}

.sidebar-profile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #94a3b8;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s ease, color 0.15s ease;
}

.sidebar-profile-menu-btn:hover,
.sidebar-profile-menu-btn[aria-expanded="true"] {
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
}

body.light-mode .sidebar-profile-menu-btn:hover,
body.light-mode .sidebar-profile-menu-btn[aria-expanded="true"] {
    background: rgba(15, 23, 42, 0.06);
    color: #334155;
}

.sidebar-profile-menu-icon {
    width: 16px;
    height: 16px;
}

.sidebar-profile-dropdown {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 8px;
    right: 8px;
    min-width: 0;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    background: linear-gradient(180deg, rgba(28, 26, 58, 0.98) 0%, rgba(20, 18, 42, 0.99) 100%);
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.45);
    z-index: 10;
    overflow: visible;
}

body.light-mode .sidebar-profile-dropdown {
    border-color: rgba(15, 23, 42, 0.1);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.99) 0%, rgba(248, 246, 240, 0.99) 100%);
    box-shadow: 0 10px 32px rgba(15, 23, 42, 0.12);
}

.sidebar-profile-dropdown-header {
    padding: 12px 14px 10px;
}

.sidebar-profile-dropdown-name {
    display: block;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: #f8fafc;
    line-height: 1.3;
}

body.light-mode .sidebar-profile-dropdown-name {
    color: #0f172a;
}

.sidebar-profile-dropdown-status {
    display: block;
    margin-top: 2px;
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: #94a3b8;
    line-height: 1.3;
}

body.light-mode .sidebar-profile-dropdown-status {
    color: #64748b;
}

.sidebar-profile-dropdown-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
}

body.light-mode .sidebar-profile-dropdown-divider {
    background: rgba(15, 23, 42, 0.08);
}

/* Pro features styling */
.profile-menu-item--upgrade .profile-menu-item-leading .profile-menu-item-icon {
    color: #ffd700;
}

.profile-menu-item--upgrade .profile-menu-item-leading .profile-menu-label {
    color: #ffd700;
}

body.light-mode .profile-menu-item--upgrade .profile-menu-item-leading .profile-menu-item-icon {
    color: #d4af37;
}

body.light-mode .profile-menu-item--upgrade .profile-menu-item-leading .profile-menu-label {
    color: #d4af37;
}

/* Pro status badge styling for profile header and dropdown */
.sidebar-profile-status.profile-status--pro,
.sidebar-profile-dropdown-status.profile-status--pro {
    color: #ffd700;
    font-weight: 700;
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
}

body.light-mode .sidebar-profile-status.profile-status--pro,
body.light-mode .sidebar-profile-dropdown-status.profile-status--pro {
    color: #d4af37;
    text-shadow: 0 0 6px rgba(212, 175, 55, 0.4);
}

/* License Modal Styling */
.license-key-input {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.5px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 6px;
    color: #e2e8f0;
    padding: 10px 12px;
    margin: 8px 0 16px;
    width: 100%;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.license-key-input:focus {
    outline: none;
    border-color: #ffd700;
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
    background: rgba(30, 41, 59, 0.8);
}

body.light-mode .license-key-input {
    background: rgba(248, 250, 252, 0.8);
    border: 1px solid rgba(212, 175, 55, 0.3);
    color: #1e293b;
}

body.light-mode .license-key-input:focus {
    background: rgba(241, 245, 249, 0.95);
    border-color: #d4af37;
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.license-modal-label {
    display: block;
    margin: 16px 0 8px;
    color: #cbd5e1;
    font-size: 13px;
    font-weight: 600;
}

body.light-mode .license-modal-label {
    color: #475569;
}

.profile-menu-item--activate .profile-menu-item-leading .profile-menu-item-icon {
    color: #818cf8;
}

body.light-mode .profile-menu-item--activate .profile-menu-item-leading .profile-menu-item-icon {
    color: #6366f1;
}

.profile-menu-item--deactivate .profile-menu-item-leading .profile-menu-item-icon {
    color: #f43f5e;
}

body.light-mode .profile-menu-item--deactivate .profile-menu-item-leading .profile-menu-item-icon {
    color: #e11d48;
}

.profile-menu-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 14px;
}

.profile-menu-item-leading {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.profile-menu-item-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: #94a3b8;
}

body.light-mode .profile-menu-item-icon {
    color: #64748b;
}

.profile-menu-label {
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: #e2e8f0;
    white-space: nowrap;
}

body.light-mode .profile-menu-label {
    color: #1e293b;
}

.profile-menu-transfer-controls {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.profile-menu-transfer-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    color: #94a3b8;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.profile-menu-transfer-btn svg {
    width: 15px;
    height: 15px;
}

.profile-menu-transfer-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    border-color: rgba(255, 255, 255, 0.16);
}

.profile-menu-transfer-btn:active {
    transform: scale(0.94);
}

body.light-mode .profile-menu-transfer-btn {
    border-color: rgba(15, 23, 42, 0.1);
    background: rgba(15, 23, 42, 0.04);
    color: #64748b;
}

body.light-mode .profile-menu-transfer-btn:hover {
    background: rgba(15, 23, 42, 0.08);
    color: #334155;
    border-color: rgba(15, 23, 42, 0.14);
}

.profile-locale-select {
    min-width: 120px;
    padding: 0 10px;
    height: var(--glass-btn-height);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    font-size: 12.5px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.slider:before {
    position: absolute;
    content: "☀️";
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: #fef08a; /* Soft bright yellow */
    border-radius: 50%;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

input:checked + .slider {
    background-color: rgba(15, 23, 42, 0.6);
    border-color: rgba(139, 92, 246, 0.4);
}

input:checked + .slider:before {
    transform: translateX(30px);
    content: "🌙";
    background: #1e1b4b;
    font-size: 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Decorative symbols inside slider track */
.slider::after {
    position: absolute;
    content: "🌙";
    font-size: 11px;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.35;
    pointer-events: none;
    transition: opacity 0.3s;
}

input:checked + .slider::after {
    content: "☀️";
    left: 8px;
    right: auto;
    opacity: 0.35;
}

body.light-mode .slider {
    background-color: rgba(15, 23, 42, 0.08);
    border-color: rgba(15, 23, 42, 0.15);
}

.theme-switch--compact {
    width: 52px;
    height: 26px;
    flex-shrink: 0;
}

.theme-switch--compact .slider:before {
    height: 20px;
    width: 20px;
    font-size: 12px;
}

.theme-switch--compact input:checked + .slider:before {
    transform: translateX(26px);
    font-size: 11px;
}

/* Controls Alignment */
.header-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Library tome header buttons */
.library-tomes {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.library-tome-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 0 18px;
    height: var(--glass-btn-height);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.library-tome-btn::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--glass-accent);
}

.library-tome-btn.book-custom:hover {
    background: var(--glass-surface-bg-hover);
    border-color: rgba(255, 215, 0, 0.35);
    box-shadow: var(--glass-shadow-hover);
}

.library-tome-btn:hover {
    transform: translateY(-3px);
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

.library-tome-btn:active {
    transform: translateY(-1px) scale(0.98);
}

.library-tome-btn.active {
    background: var(--glass-surface-bg-hover);
    transform: translateY(-2px);
    border-color: rgba(255, 215, 0, 0.75);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.4), inset 0 0 8px rgba(255, 215, 0, 0.15);
}

body.light-mode .library-tome-btn {
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    border-color: rgba(255, 255, 255, 0.1);
}

body.light-mode .library-tome-btn.book-custom::before {
    background: var(--glass-accent-muted);
}

body.light-mode .library-tome-btn.book-custom:hover {
    background: var(--glass-surface-bg-hover);
    border-color: rgba(255, 215, 0, 0.35);
    box-shadow: var(--glass-shadow-hover);
}

body.light-mode .library-tome-btn.active {
    background: var(--glass-surface-bg-hover);
    border-color: rgba(255, 215, 0, 0.65);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.25);
    color: var(--glass-accent);
}

/* Pill close button styling */
.pill-close-btn {
    margin-left: 8px;
    font-size: 16px;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    transition: all 0.2s ease;
}
.pill-close-btn:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.15);
}
body.light-mode .pill-close-btn {
    color: rgba(15, 23, 42, 0.5);
}
body.light-mode .pill-close-btn:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

/* Upload Section */
.upload-section {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.file-label {
    display: inline-flex;
    align-items: center;
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    padding: 0 20px;
    height: var(--glass-btn-height);
    border-radius: var(--glass-btn-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    border: var(--glass-btn-border);
}

.header-right .file-label .file-input-text {
    white-space: nowrap;
}

.upload-btn-content {
    display: flex;
    align-items: center;
    gap: 8px;
}

.upload-svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    transition: transform 0.3s ease;
}

.file-label:hover {
    transform: translateY(-3px);
    box-shadow: var(--glass-shadow-hover);
    background: var(--glass-surface-bg-hover);
}

.file-label:hover .upload-svg {
    transform: translateY(-2px);
}

.file-label:active {
    transform: translateY(-1px);
}

.file-label--icon-only {
    width: var(--glass-btn-height);
    height: var(--glass-btn-height);
    padding: 0;
    justify-content: center;
}

.file-label--icon-only .upload-svg {
    width: 20px;
    height: 20px;
}

body.light-mode .file-label {
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    box-shadow: none;
}

body.light-mode .file-label:hover {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

.file-input {
    display: none;
}

.file-info {
    color: #ffd700;
    font-size: 14px;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.file-info:empty {
    display: none !important;
}

body.light-mode .file-info {
    color: #1e1b4b;
    text-shadow: none;
}

.error-message {
    color: #ff6b6b;
    font-size: 14px;
    font-weight: 600;
    background: rgba(255, 107, 107, 0.1);
    padding: 8px 12px;
    border-radius: 4px;
    display: none;
}

body.light-mode .error-message {
    background: rgba(255, 107, 107, 0.12);
}

/* Sidebar Search panel */
.search-sidebar-toolbar {
    flex-shrink: 0;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(0, 0, 0, 0.15);
}

body.light-mode .search-sidebar-toolbar {
    border-bottom-color: rgba(15, 23, 42, 0.08);
    background: rgba(255, 255, 255, 0.35);
}

.search-sidebar-results {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.search-sidebar-toolbar .search-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    align-items: stretch;
    flex-wrap: nowrap;
}

.search-sidebar-toolbar .search-query-row {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    width: 100%;
}

.search-sidebar-toolbar .search-query-row .search-input-wrapper {
    flex: 1;
    min-width: 0;
}

.search-sidebar-toolbar .search-query-row .search-btn {
    flex-shrink: 0;
}

.search-sidebar-toolbar .search-controls-row {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    width: 100%;
}

.search-sidebar-toolbar .search-controls-row > .glass-select,
.search-sidebar-toolbar .search-controls-row > .search-select:not(.glass-select-native),
.search-sidebar-toolbar .search-container .glass-select {
    flex: 1;
    min-width: 0;
    width: 100%;
}

.search-sidebar-toolbar .search-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.search-sidebar-toolbar .glass-select-trigger {
    min-width: 0;
    width: 100%;
}

.search-sidebar-toolbar .glass-select {
    position: relative;
    z-index: 1;
}

.search-sidebar-toolbar .glass-select.is-open {
    z-index: 20;
}

.search-sidebar-toolbar .glass-select-menu {
    z-index: 30;
}

.search-sidebar-toolbar #search-input {
    width: 100%;
    padding: 0 12px;
    height: var(--glass-btn-height);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--glass-btn-radius);
    color: #e2e8f0;
    font-size: 13.5px;
    font-family: inherit;
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-sidebar-toolbar #search-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.search-sidebar-toolbar #search-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 215, 0, 0.35);
    box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.12);
}

body.light-mode .search-sidebar-toolbar #search-input {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(15, 23, 42, 0.12);
    color: #1e293b;
}

body.light-mode .search-sidebar-toolbar #search-input::placeholder {
    color: rgba(15, 23, 42, 0.4);
}

body.light-mode .search-sidebar-toolbar #search-input:focus {
    border-color: rgba(79, 70, 229, 0.45);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.12);
}

.search-container {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.search-container .glass-select {
    min-width: 148px;
    flex-shrink: 0;
}

.search-input-wrapper {
    position: relative;
    flex: 1 1 300px;
    min-width: 200px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--glass-accent-muted);
    pointer-events: none;
}

#search-input {
    width: 100%;
    padding: 0 12px 0 38px;
    height: var(--glass-btn-height);
    background: var(--glass-surface-bg);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    color: #e2e8f0;
    font-size: 13.5px;
    font-family: inherit;
    transition: background 0.2s ease, box-shadow 0.2s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
}

#search-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

#search-input:focus {
    outline: none;
    background: var(--glass-surface-bg-focus);
    box-shadow: var(--glass-shadow-hover);
}

body.light-mode #search-input {
    color: #1e293b;
}

body.light-mode #search-input::placeholder {
    color: rgba(15, 23, 42, 0.4);
}

/* Legacy native search-select fallback if glass enhancement is unavailable */
.search-select:not(.glass-select-native) {
    padding: 0 16px;
    height: var(--glass-btn-height);
    background: var(--glass-surface-bg);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    color: var(--glass-accent);
    font-size: 13.5px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    outline: none;
}

.search-select:not(.glass-select-native):focus {
    background: var(--glass-surface-bg-focus);
    box-shadow: var(--glass-shadow-hover);
}

.search-select:not(.glass-select-native) option {
    background: #0f1115;
    color: #e2e8f0;
}

body.light-mode .search-select:not(.glass-select-native) option {
    background: #ffffff;
    color: #1e293b;
}

.search-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--glass-btn-height);
    height: var(--glass-btn-height);
    background: var(--glass-surface-bg);
    border: var(--glass-btn-border);
    color: var(--glass-accent);
    border-radius: var(--glass-btn-radius);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    flex-shrink: 0;
}

.search-btn:hover:not(:disabled) {
    background: var(--glass-surface-bg-hover);
    transform: translateY(-3px);
    box-shadow: var(--glass-shadow-hover);
}

.search-btn:active:not(:disabled) {
    transform: translateY(-1px) scale(0.97);
}

.search-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

body.light-mode .search-btn {
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    box-shadow: none;
}

body.light-mode .search-btn:hover:not(:disabled) {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

.search-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--glass-btn-height);
    height: var(--glass-btn-height);
    background: var(--glass-surface-bg);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    color: var(--glass-accent);
    cursor: pointer;
    transition: all 0.2s ease, transform 0.1s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
}

.search-nav-btn:hover:not(:disabled) {
    background: var(--glass-surface-bg-hover);
    border-color: rgba(255, 215, 0, 0.3);
    box-shadow: var(--glass-shadow-hover);
    transform: scale(1.05);
}

.search-nav-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.search-nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

body.light-mode .search-nav-btn {
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    border: var(--glass-btn-border);
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
}

body.light-mode .search-nav-btn:hover:not(:disabled) {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

.search-review-bar {
    position: fixed;
    top: calc(12px + var(--safe-top));
    left: 50%;
    transform: translate(-50%, -8px);
    z-index: 10000;
    background: rgba(10, 12, 22, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 215, 0, 0.35);
    border-radius: 99px;
    padding: 6px 10px 6px 6px;
    color: #e8ebf3;
    font-size: 13px;
    font-weight: 500;
    box-shadow:
        0 10px 28px -6px rgba(0, 0, 0, 0.55),
        0 0 0 1px rgba(255, 215, 0, 0.08);
    display: flex;
    align-items: center;
    gap: 6px;
    max-width: min(92vw, 640px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.search-review-bar.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
    pointer-events: auto;
}

.search-review-bar.hidden {
    display: none !important;
}

body.light-mode .search-review-bar {
    background: rgba(255, 255, 255, 0.94);
    border-color: rgba(124, 58, 237, 0.35);
    color: #1e293b;
    box-shadow:
        0 10px 24px -6px rgba(15, 23, 42, 0.14),
        0 0 0 1px rgba(124, 58, 237, 0.08);
}

.search-review-label {
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 4px;
    letter-spacing: 0.01em;
}

.search-review-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: #e8ebf3;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-review-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 215, 0, 0.45);
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.2);
}

.search-review-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.search-review-btn--close:hover:not(:disabled) {
    border-color: rgba(248, 113, 113, 0.5);
    box-shadow: 0 0 8px rgba(248, 113, 113, 0.2);
}

body.light-mode .search-review-btn {
    background: rgba(15, 23, 42, 0.05);
    border-color: rgba(15, 23, 42, 0.12);
    color: #1e293b;
}

body.light-mode .search-review-btn:hover:not(:disabled) {
    background: rgba(15, 23, 42, 0.1);
    border-color: rgba(124, 58, 237, 0.4);
    box-shadow: none;
}

.search-review-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-top-color: #ffd700;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

body.light-mode .search-review-spinner {
    border-color: rgba(15, 23, 42, 0.15);
    border-top-color: #7c3aed;
}

.ic-search-highlight {
    position: absolute;
    background: rgba(217, 119, 6, 0.35); /* Amber in dark mode */
    border: 1px solid #d97706;
    box-shadow: 0 0 6px #f59e0b;
    border-radius: 2px;
    animation: highlight-pulse 1.5s infinite alternate;
}

.ic-search-highlight.active {
    background: rgba(245, 158, 11, 0.65); /* Brighter amber */
    border-color: #fbbf24;
    box-shadow: 0 0 10px #fbbf24;
    z-index: 6; /* render above other highlights */
}

body.light-mode .ic-search-highlight {
    background: rgba(124, 58, 237, 0.3); /* Purple in light mode */
    border-color: #7c3aed;
    box-shadow: 0 0 6px #8b5cf6;
}

body.light-mode .ic-search-highlight.active {
    background: rgba(139, 92, 246, 0.6); /* Brighter purple */
    border-color: #a78bfa;
    box-shadow: 0 0 10px #c084fc;
    z-index: 6;
}

@keyframes highlight-pulse {
    from { opacity: 0.85; }
    to { opacity: 1; }
}

.error-message.show {
    display: inline-block;
}

/* Loading Spinner */
.loading-spinner {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #e2e8f0;
    font-size: 13px;
    font-weight: 500;
}

body.light-mode .loading-spinner {
    color: #1e293b;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: #ffd700;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

body.light-mode .spinner {
    border-color: rgba(0, 0, 0, 0.1);
    border-top-color: #3b52cc;
}

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

/* Main Content */
.main-content {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: linear-gradient(rgba(15, 12, 41, 0.75), rgba(36, 36, 62, 0.8)), var(--library-bg-image);
    background-size: cover;
    background-position: center;
    overflow: hidden;
    position: relative;
    transition: background 0.3s ease;
}

body.light-mode .main-content {
    background-image: linear-gradient(rgba(253, 251, 247, 0.8), rgba(240, 236, 224, 0.85)), var(--library-bg-image);
}

.renderer-container {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 0;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    background: transparent;
    overflow: visible;
    contain: layout;
}

.renderer-container.book-custom {
    --book-accent-rgb: 255, 255, 255;
    --book-glow-spread:
        0 10px 40px rgba(0, 0, 0, 0.4),
        0 0 45px rgba(var(--book-accent-rgb), 0.75),
        0 0 90px rgba(var(--book-accent-rgb), 0.5),
        0 0 130px rgba(var(--book-accent-rgb), 0.28);
    --book-glow-page:
        inset 0 0 15px rgba(0, 0, 0, 0.1),
        0 10px 30px rgba(0, 0, 0, 0.35),
        0 0 45px rgba(var(--book-accent-rgb), 0.75),
        0 0 90px rgba(var(--book-accent-rgb), 0.5),
        0 0 130px rgba(var(--book-accent-rgb), 0.28);
}

body.light-mode .renderer-container.book-custom {
    --book-accent-rgb: 100, 116, 139;
    --book-glow-spread:
        0 10px 30px rgba(15, 23, 42, 0.14),
        0 0 40px rgba(var(--book-accent-rgb), 0.55),
        0 0 80px rgba(var(--book-accent-rgb), 0.38),
        0 0 120px rgba(var(--book-accent-rgb), 0.22);
    --book-glow-page:
        inset 0 0 15px rgba(0, 0, 0, 0.05),
        0 10px 30px rgba(0, 0, 0, 0.35),
        0 0 45px rgba(var(--book-accent-rgb), 0.65),
        0 0 90px rgba(var(--book-accent-rgb), 0.42),
        0 0 130px rgba(var(--book-accent-rgb), 0.24);
}

.book-glow-host.book-glow-spread {
    box-shadow: var(--book-glow-spread);
}

.book-glow-host.book-glow-single-right,
.book-glow-host.book-glow-single-left {
    box-shadow: none;
}

.book-glow-host.book-glow-on-host {
    box-shadow: var(--book-glow-page);
}

.book-glow-host.book-glow-single-right .st-page.--right .st-page-content,
.book-glow-host.book-glow-single-right .css-page-right:not(.ic-page-empty),
.book-glow-host.book-glow-single-left .st-page.--left .st-page-content,
.book-glow-host.book-glow-single-left .css-page-left:not(.ic-page-empty) {
    box-shadow: var(--book-glow-page);
}

.book-glow-host.book-glow-on-host .st-page-content,
.book-glow-host.book-glow-on-host .css-page-right,
.book-glow-host.book-glow-on-host .css-page-left {
    box-shadow: none;
}

body.light-mode .renderer-container {
    background: transparent;
}

.welcome-card {
    background: rgba(15, 12, 41, 0.65);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 16px;
    padding: 36px 28px;
    text-align: center;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(255, 215, 0, 0.05);
    animation: float-card 3s ease-in-out infinite;
}

body.light-mode .welcome-card {
    background: rgba(253, 251, 247, 0.85);
    border: 1px solid rgba(139, 92, 246, 0.25);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1), inset 0 0 20px rgba(139, 92, 246, 0.05);
}

.welcome-scroll-decor {
    font-size: 32px;
    margin-bottom: 12px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.welcome-title {
    font-family: 'Cinzel', serif;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #ffd700 0%, #ff9f1c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.light-mode .welcome-title {
    background: linear-gradient(135deg, #1e1b4b 0%, #4f46e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-text {
    font-family: 'Inter', sans-serif;
    font-size: 14.5px;
    line-height: 1.6;
    color: #cfd2d9;
    font-weight: 500;
}

body.light-mode .welcome-text {
    color: #334155;
}

.onboarding-screen {
    position: fixed;
    inset: 0;
    z-index: 1500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 24px calc(76px + var(--safe-bottom));
    background-color: #0f0c29;
    background-image: linear-gradient(rgba(15, 12, 41, 0.55), rgba(36, 36, 62, 0.65)), var(--welcome-bg-image, var(--library-bg-image));
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}

body.light-mode .onboarding-screen {
    background-color: #fdfbf7;
    background-image: linear-gradient(rgba(253, 251, 247, 0.72), rgba(240, 236, 224, 0.78)), var(--welcome-bg-image, var(--library-bg-image));
}

.onboarding-screen.hidden {
    display: none;
}

body.onboarding-active .app-container {
    visibility: hidden;
    pointer-events: none;
}

.onboarding-welcome-card {
    width: 90%;
    max-width: 560px;
    max-height: min(calc(90dvh - 76px), calc(90vh - 76px), 640px);
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 28px 24px 24px;
    overflow: hidden;
    animation: none;
}

.onboarding-step-body {
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.onboarding-step:not(.hidden) {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.onboarding-step-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.onboarding-step .welcome-title {
    flex-shrink: 0;
    margin-bottom: 12px;
}

.onboarding-step-scroll .welcome-text:last-child {
    margin-bottom: 0;
}

.onboarding-pro-btn {
    flex-shrink: 0;
    margin-top: 16px;
}

.onboarding-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-shrink: 0;
    padding-top: 4px;
}

.onboarding-step-indicator {
    min-width: 6.5rem;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: #cfd2d9;
    letter-spacing: 0.02em;
}

body.light-mode .onboarding-step-indicator {
    color: #475569;
}

.onboarding-nav-btn.hidden {
    display: none;
}

.onboarding-welcome-card .welcome-text {
    margin-bottom: 0;
}

.onboarding-welcome-card .welcome-text + .welcome-text {
    margin-top: 1em;
}

.onboarding-step[data-onboarding-step="upload"] .offer-tome-btn {
    flex-shrink: 0;
    margin-top: 16px;
}

@media (max-height: 520px) {
    .onboarding-screen {
        padding: 12px 16px calc(64px + var(--safe-bottom));
    }

    .onboarding-welcome-card {
        gap: 10px;
        padding: 16px 18px 14px;
        max-height: min(calc(100dvh - 64px), calc(100vh - 64px));
    }

    .onboarding-step .welcome-title {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .onboarding-welcome-card .welcome-text {
        font-size: 13px;
        line-height: 1.45;
    }

    .onboarding-step[data-onboarding-step="upload"] .offer-tome-btn,
    .onboarding-pro-btn {
        margin-top: 10px;
    }
}

body.onboarding-active #search-review-bar {
    display: none !important;
}

.onboarding-platform-footer {
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: max-content;
    max-width: calc(100% - 32px);
    padding: 14px 24px calc(14px + var(--safe-bottom));
    background: rgba(15, 12, 41, 0.65);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-bottom: none;
    border-radius: 16px 16px 0 0;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.35), inset 0 0 20px rgba(255, 215, 0, 0.05);
    pointer-events: auto;
    text-align: center;
}

body.light-mode .onboarding-platform-footer {
    background: rgba(253, 251, 247, 0.85);
    border-color: rgba(139, 92, 246, 0.25);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08), inset 0 0 20px rgba(139, 92, 246, 0.05);
}

.onboarding-platform-footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.onboarding-platform-footer-label {
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: #cfd2d9;
    letter-spacing: 0.02em;
}

body.light-mode .onboarding-platform-footer-label {
    color: #475569;
}

.onboarding-platform-footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.onboarding-platform-link {
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 600;
    color: #e2e5eb;
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: color 0.2s ease;
}

.onboarding-platform-link:hover,
.onboarding-platform-link:focus-visible {
    color: var(--glass-accent);
    outline: none;
}

body.light-mode .onboarding-platform-link {
    color: #334155;
}

body.light-mode .onboarding-platform-link:hover,
body.light-mode .onboarding-platform-link:focus-visible {
    color: #4f46e5;
}

.onboarding-platform-link:not(:last-child)::after {
    content: '·';
    margin: 0 5px;
    color: rgba(255, 215, 0, 0.35);
    font-weight: 400;
    pointer-events: none;
}

body.light-mode .onboarding-platform-link:not(:last-child)::after {
    color: rgba(79, 70, 229, 0.35);
}

@media (min-width: 480px) {
    .onboarding-platform-footer-inner {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }

    .onboarding-platform-link {
        font-size: 12px;
    }

    .onboarding-platform-footer-label {
        font-size: 12px;
    }
}


.offer-tome-btn {
    display: inline-flex;
    align-items: center;
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    padding: 0 24px;
    height: var(--glass-btn-height);
    border-radius: var(--glass-btn-radius);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    border: var(--glass-btn-border);
}

.offer-tome-btn:hover {
    background: var(--glass-surface-bg-hover);
    transform: translateY(-3px);
    box-shadow: var(--glass-shadow-hover);
}

.offer-tome-btn:active {
    transform: translateY(-1px);
}

.offer-tome-btn:disabled {
    opacity: 0.65;
    cursor: wait;
    transform: none;
}

body.light-mode .offer-tome-btn {
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    box-shadow: none;
}

body.light-mode .offer-tome-btn:hover {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

@keyframes float-card {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

/* Progress Overlay */
.progress-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(2px);
}

body.light-mode .progress-overlay {
    background: rgba(255, 255, 255, 0.75);
}

body.light-mode .progress-card {
    background: #ffffff;
    color: #1f2937;
}

body.light-mode .progress-spinner-large {
    border-color: #d8ddee;
    border-top-color: #4f6df5;
    border-right-color: #7f94ff;
}

.progress-overlay.hidden {
    display: none;
}

.progress-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.progress-card h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    font-weight: 600;
}

.progress-spinner-large {
    width: 60px;
    height: 60px;
    border: 4px solid #e9ecef;
    border-top-color: #667eea;
    border-right-color: #764ba2;
    border-radius: 50%;
    margin: 0 auto 25px;
    animation: spin-large 0.8s linear infinite;
}

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

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 16px;
    font-weight: 600;
    color: #667eea;
    margin: 10px 0;
}

.elapsed-time {
    font-size: 14px;
    color: #999;
    margin: 8px 0;
    font-family: 'Courier New', monospace;
    font-weight: 500;
}

.progress-subtext {
    font-size: 13px;
    color: #999;
    margin-top: 10px;
}

/* Footer */
.footer {
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
    padding: 12px 20px;
    text-align: center;
    font-size: 13px;
    color: #666;
}

.footer strong {
    color: #667eea;
}

/* Responsive Design */
@media (max-width: 900px) {
    .header-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }
    
    .library-tomes {
        justify-content: center;
    }
    
    .upload-section {
        justify-content: center;
    }

    .header-right.upload-section {
        justify-content: flex-end;
    }
}

@media (max-width: 768px) {
    .app-title {
        font-size: 24px;
    }

    .footer {
        font-size: 12px;
    }
}

@media (max-width: 580px) {
    .library-tomes {
        display: grid;
        grid-template-columns: 1fr 1fr;
        width: 100%;
        gap: 8px;
    }
    
    .library-tome-btn {
        justify-content: center;
        font-size: 12.5px;
        padding: 0 10px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: calc(15px + var(--safe-top)) 15px 15px;
    }

    .app-title {
        font-size: 20px;
    }

    .upload-section {
        flex-direction: column;
        width: 100%;
    }

    .header-right.upload-section {
        width: auto;
        flex-direction: row;
    }

    .file-label:not(.file-label--icon-only) {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .file-info,
    .error-message,
    .loading-spinner {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
}

/* PDF viewer scrollbar */
.renderer-container ::-webkit-scrollbar {
    width: 8px;
}

.renderer-container ::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.renderer-container ::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

.renderer-container ::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* =========================================================
   Bookmarking System Styles
   ========================================================= */

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.hamburger-menu,
.search-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--glass-btn-height);
    height: var(--glass-btn-height);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
}

.hamburger-menu svg,
.search-toggle-btn svg {
    width: 22px;
    height: 22px;
}

.hamburger-menu:hover,
.search-toggle-btn:hover,
.search-toggle-btn[aria-expanded="true"] {
    background: var(--glass-surface-bg-hover);
    transform: scale(1.05);
    box-shadow: var(--glass-shadow-hover);
}

.hamburger-menu:active,
.search-toggle-btn:active {
    transform: scale(0.95);
}

body.light-mode .hamburger-menu:hover,
body.light-mode .search-toggle-btn:hover,
body.light-mode .search-toggle-btn[aria-expanded="true"] {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

/* Sidebar Backdrop Overlay */
.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: opacity 0.3s ease;
}

.sidebar-backdrop.hidden {
    display: none !important;
}

/* Sliding Sidebar Panel */
.app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 350px;
    background: linear-gradient(135deg, rgba(15, 12, 41, 0.96) 0%, rgba(24, 24, 62, 0.98) 100%);
    border-right: 1px solid rgba(255, 215, 0, 0.2);
    box-shadow: 10px 0 40px rgba(0, 0, 0, 0.6);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.app-sidebar.open {
    transform: translateX(0);
    will-change: transform;
}

body.light-mode .app-sidebar {
    background: linear-gradient(135deg, rgba(253, 251, 247, 0.98) 0%, rgba(240, 236, 224, 0.98) 100%);
    border-right: 1px solid rgba(139, 92, 246, 0.2);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.1);
}

.sidebar-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-panel {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-panel.hidden {
    display: none !important;
}

.sidebar-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(24px + var(--safe-top)) 20px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

body.light-mode .sidebar-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.sidebar-title {
    font-family: 'Cinzel', serif;
    font-size: 20px;
    font-weight: 700;
    color: #ffd700;
}

body.light-mode .sidebar-title {
    color: #1e1b4b;
}

.sidebar-close-btn {
    background: transparent;
    border: none;
    color: #a0aec0;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s ease;
}

.sidebar-header .file-label--icon-only {
    flex-shrink: 0;
}

.sidebar-close-btn:hover {
    color: #ef4444;
}

/* Empty State Styling */
.bookmarks-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    text-align: center;
    color: #a0aec0;
}

body.light-mode .bookmarks-empty {
    color: #64748b;
}

.bookmarks-empty.hidden {
    display: none !important;
}

.bookmarks-empty .empty-icon {
    font-size: 40px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.bookmarks-empty p {
    font-size: 14px;
    margin-bottom: 8px;
    font-weight: 500;
}

.bookmarks-empty .empty-sub {
    font-size: 12px;
    opacity: 0.7;
}

/* Bookmarks Scrollable List */
.bookmarks-list {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bookmarks-list.hidden {
    display: none !important;
}

.bookmarks-list::-webkit-scrollbar {
    width: 6px;
}

.bookmarks-list::-webkit-scrollbar-track {
    background: transparent;
}

.bookmarks-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

body.light-mode .bookmarks-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
}

/* Library menu — books with nested bookmarks */
.library-menu-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.library-menu-book {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
    text-align: left;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--book-accent, #ffffff);
    border-radius: 8px;
    padding: 10px 10px 10px 14px;
    color: #ffffff;
    transition: all 0.2s ease;
}

.library-menu-book-label {
    flex: 1;
    min-width: 0;
    padding: 2px 0;
    border: none;
    background: transparent;
    color: inherit;
    font-size: 14px;
    font-weight: 700;
    text-align: left;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.library-menu-book-label:hover {
    color: #ffffff;
}

.library-menu-book .bookmark-actions {
    flex-shrink: 0;
}

.library-menu-book:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.library-menu-book.active {
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.library-menu-group.book-custom .library-menu-book {
    border-left-color: var(--book-accent, #ffffff);
}

.library-menu-bookmarks {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-left: 14px;
    border-left: 2px solid rgba(255, 255, 255, 0.08);
    margin-left: 8px;
}

.library-menu-bookmark {
    padding: 10px 12px;
}

body.light-mode .library-menu-book {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.08);
    border-left-color: #64748b;
    color: #1e1b4b;
}

body.light-mode .library-menu-book-label:hover {
    color: #1e1b4b;
}

body.light-mode .library-menu-book:hover {
    background: #ffffff;
}

body.light-mode .library-menu-book.active {
    background: #f8fafc;
    box-shadow: 0 0 0 1px rgba(100, 116, 139, 0.2);
}

body.light-mode .library-menu-bookmarks {
    border-left-color: rgba(0, 0, 0, 0.08);
}

/* Bookmark Card Item Styling */
.bookmark-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-left: 3px solid #ffd700;
    border-radius: 8px;
    padding: 12px 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.bookmark-item.book-custom { border-left-color: var(--book-accent, #ffffff); }

.bookmark-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 215, 0, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

body.light-mode .bookmark-item {
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-left: 3px solid rgba(139, 92, 246, 0.8);
}

body.light-mode .bookmark-item.book-custom { border-left-color: var(--book-accent, #64748b); }

body.light-mode .bookmark-item:hover {
    background: #ffffff;
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.bookmark-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.bookmark-name {
    font-size: 13.5px;
    font-weight: 600;
    color: #ffffff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

body.light-mode .bookmark-name {
    color: #1e1b4b;
}

.bookmark-meta {
    font-size: 11px;
    color: #a0aec0;
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

body.light-mode .bookmark-meta {
    color: #64748b;
}

.bookmark-book {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
    flex-shrink: 1;
    min-width: 0;
}

.bookmark-dot {
    flex-shrink: 0;
}

.bookmark-page-label {
    white-space: nowrap;
    flex-shrink: 0;
}

.bookmark-page {
    font-weight: 600;
    color: #ffd700;
}

body.light-mode .bookmark-page {
    color: rgba(139, 92, 246, 1);
}

.bookmark-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 8px;
}

.bookmark-rename-btn,
.bookmark-delete-btn {
    background: transparent;
    border: none;
    color: #a0aec0;
    padding: 6px;
    border-radius: 4px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.bookmark-rename-btn:hover {
    color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
}

body.light-mode .bookmark-rename-btn:hover {
    color: rgba(139, 92, 246, 1);
    background: rgba(139, 92, 246, 0.08);
}

.bookmark-delete-btn:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.bookmark-rename-btn svg,
.bookmark-delete-btn svg {
    width: 16px;
    height: 16px;
}

/* Toolbar Bookmark Button States */
.ic-btn-bookmark.bookmarked {
    color: #ffd700 !important;
    filter: drop-shadow(0 0 4px rgba(255, 215, 0, 0.6));
}

.ic-btn-bookmark.bookmarked svg {
    fill: currentColor;
}

body.light-mode .ic-btn-bookmark.bookmarked {
    color: rgba(139, 92, 246, 1) !important;
    filter: drop-shadow(0 0 3px rgba(139, 92, 246, 0.4));
}

/* Bookmark Modal Styles */
.bookmark-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

.bookmark-modal.hidden {
    display: none !important;
}

#alert-modal,
#confirm-modal {
    z-index: 2500;
}

.bookmark-modal-content {
    background: linear-gradient(135deg, rgba(20, 16, 45, 0.96) 0%, rgba(30, 30, 68, 0.98) 100%);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 16px;
    padding: 24px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), inset 0 0 20px rgba(255, 215, 0, 0.05);
    text-align: center;
    animation: scale-up 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

body.light-mode .bookmark-modal-content {
    background: linear-gradient(135deg, rgba(253, 251, 247, 0.98) 0%, rgba(240, 236, 224, 0.98) 100%);
    border: 1px solid rgba(120, 90, 40, 0.28);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15), inset 0 0 24px rgba(212, 165, 116, 0.08);
}

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

.bookmark-modal-content h3 {
    font-family: 'Cinzel', serif;
    font-size: 18px;
    color: #ffd700;
    margin-bottom: 12px;
    letter-spacing: 0.02em;
    text-transform: none;
}

.bookmark-prompt-content {
    max-width: 420px;
    text-align: left;
}

.bookmark-prompt-content h3 {
    text-align: center;
    margin-bottom: 14px;
}

.bookmark-prompt-label {
    display: block;
    margin: 14px 0 6px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: rgba(255, 215, 0, 0.72);
}

body.light-mode .bookmark-prompt-label {
    color: rgba(30, 27, 75, 0.72);
}

.bookmark-prompt-content #bookmark-name-input {
    margin-bottom: 20px;
}

body.light-mode .bookmark-modal-content h3 {
    color: #1e1b4b;
}

#bookmark-name-input {
    width: 100%;
    padding: 0 14px;
    height: var(--glass-btn-height);
    border-radius: var(--glass-btn-radius);
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 14.5px;
    outline: none;
    transition: all 0.2s ease;
    box-sizing: border-box;
    display: flex;
    align-items: center;
}

#bookmark-name-input:focus {
    border-color: rgba(255, 215, 0, 0.65);
    box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.18);
}

body.light-mode #bookmark-name-input {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(120, 90, 40, 0.22);
    color: #1e1b4b;
}

body.light-mode #bookmark-name-input:focus {
    border-color: rgba(139, 105, 20, 0.55);
    box-shadow: 0 0 0 2px rgba(212, 165, 116, 0.28);
}

.bookmark-modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-btn-cancel {
    padding: 0 16px;
    height: var(--glass-btn-height);
    border-radius: var(--glass-btn-radius);
    border: var(--glass-btn-border);
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
}

.modal-btn-cancel:hover {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

body.light-mode .modal-btn-cancel {
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.light-mode .modal-btn-cancel:hover {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

.modal-btn-save {
    padding: 0 18px;
    height: var(--glass-btn-height);
    border-radius: var(--glass-btn-radius);
    border: var(--glass-btn-border);
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: var(--glass-surface-blur);
    -webkit-backdrop-filter: var(--glass-surface-blur);
    box-shadow: none;
}

.modal-btn-save:hover {
    transform: translateY(-1px);
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

body.light-mode .modal-btn-save {
    background: var(--glass-surface-bg);
    color: var(--glass-accent);
    box-shadow: none;
}

body.light-mode .modal-btn-save:hover {
    background: var(--glass-surface-bg-hover);
    box-shadow: var(--glass-shadow-hover);
}

.modal-desc {
    font-size: 14px;
    line-height: 1.65;
    color: #cfd2d9;
    margin-bottom: 4px;
    text-align: left;
}

body.light-mode .modal-desc {
    color: #4a5568;
}

.modal-desc.hidden {
    display: none !important;
}

.tome-inscribe-content {
    max-width: 420px;
}

.tome-inscribe-label {
    display: block;
    margin: 14px 0 6px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
}

body.light-mode .tome-inscribe-label {
    color: rgba(30, 27, 75, 0.72);
}

#tome-inscribe-name-input {
    width: 100%;
    padding: 0 12px;
    height: var(--glass-btn-height);
    border-radius: var(--glass-btn-radius);
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(0, 0, 0, 0.25);
    color: #fff;
    font-size: 14px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
}

#tome-inscribe-name-input:focus {
    outline: none;
    border-color: rgba(167, 139, 250, 0.8);
    box-shadow: 0 0 0 2px rgba(167, 139, 250, 0.25);
}

body.light-mode #tome-inscribe-name-input {
    background: #fff;
    color: #1e1b4b;
    border-color: rgba(0, 0, 0, 0.12);
}

.tome-inscribe-color-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
}

#tome-inscribe-color-input {
    width: 52px;
    height: 40px;
    padding: 2px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
}

body.light-mode #tome-inscribe-color-input {
    border-color: rgba(0, 0, 0, 0.12);
}

.tome-inscribe-color-hint {
    flex: 1;
    font-size: 12px;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.62);
}

body.light-mode .tome-inscribe-color-hint {
    color: rgba(30, 27, 75, 0.62);
}

/* =========================================================
   Bookmark Filters Styling
   ========================================================= */
.bookmark-filters {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.bookmark-filters.hidden {
    display: none !important;
}

body.light-mode .bookmark-filters {
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

.bookmark-filter-input-wrapper {
    position: relative;
    flex: 1.2;
    min-width: 0;
}

.bookmark-filter-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    color: rgba(255, 255, 255, 0.4);
    pointer-events: none;
}

body.light-mode .bookmark-filter-icon {
    color: rgba(15, 23, 42, 0.4);
}

#bookmark-filter-text {
    width: 100%;
    padding: 0 8px 0 30px;
    height: var(--glass-btn-height);
    background: rgba(255, 255, 255, 0.04);
    border: var(--glass-btn-border);
    border-radius: var(--glass-btn-radius);
    color: #e2e8f0;
    font-size: 12.5px;
    font-family: inherit;
    transition: all 0.3s ease;
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
}

#bookmark-filter-text:focus {
    outline: none;
    border-color: rgba(217, 119, 6, 0.5); /* Amber focus */
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 8px rgba(217, 119, 6, 0.2);
}

body.light-mode #bookmark-filter-text {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(15, 23, 42, 0.12);
    color: #1e293b;
}

body.light-mode #bookmark-filter-text:focus {
    border-color: rgba(79, 70, 229, 0.5); /* Indigo focus */
    box-shadow: 0 0 8px rgba(79, 70, 229, 0.15);
}

.bookmark-filter-select {
    flex: 1;
    min-width: 0;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    color: #e2e8f0;
    font-size: 12.5px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(8px);
    outline: none;
    text-overflow: ellipsis;
}

.bookmark-filter-select:focus {
    border-color: rgba(217, 119, 6, 0.5);
}

.bookmark-filter-select option {
    background: #0f1115;
    color: #e2e8f0;
}

body.light-mode .bookmark-filter-select {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(15, 23, 42, 0.12);
    color: #1e293b;
}

body.light-mode .bookmark-filter-select option {
    background: #ffffff;
    color: #1e293b;
}

/* =========================================================
   Enhanced Renderer (StPageFlip) Integration Styles
   ========================================================= */

.renderer-container.ic-panning,
.renderer-container.ic-panning *,
.renderer-container.st-grabbing,
.renderer-container.st-grabbing * {
    cursor: grabbing !important;
}

.st-stage {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    min-height: 0;
    min-width: 0;
    flex: 1 1 auto;
    background: transparent;
    color: #e6e8ee;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    overflow: visible;
    user-select: none;
    -webkit-user-select: none;
    align-items: center;
    justify-content: center;
}

body.light-mode .st-stage {
    background: transparent;
    color: #1e293b;
}

.st-canvas {
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: visible;
    contain: layout;
    will-change: transform;
}

.book-glow-host {
    background-color: transparent;
    overflow: visible;
}

.st-pages-container {
    background-color: transparent;
    contain: layout;
    overflow: visible;
}

.st-page {
    position: relative;
    background-color: #ffffff;
    overflow: visible;
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
}

.st-page-content {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #ffffff;
    box-sizing: border-box;
}

.st-page-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0;
    transition: opacity 0.25s ease-in-out;
    will-change: opacity;
}

.st-page-background.loaded {
    opacity: 1;
    will-change: auto;
}

.st-page-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: #6366f1;
    animation: spin 1s infinite linear;
}

/* Side navigation buttons */
.st-stage .ic-side {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 70px;
    background: rgba(15, 17, 21, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #e6e8ee;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    z-index: 10;
    transition: all 0.2s ease;
    outline: none;
    backdrop-filter: blur(4px);
}

.st-stage .ic-side:hover {
    background: rgba(15, 17, 21, 0.7);
    color: #ffd700;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.15);
}

.st-stage .ic-side-prev {
    left: 20px;
}

.st-stage .ic-side-next {
    right: 20px;
}

.st-stage .ic-side-disabled {
    opacity: 0;
    pointer-events: none;
}

/* =========================================================
   Simple Renderer (CSS 3D Flipbook) Integration Styles
   ========================================================= */

.css-stage {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    min-height: 0;
    min-width: 0;
    flex: 1 1 auto;
    background: transparent;
    color: #e6e8ee;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    overflow: visible;
    user-select: none;
    -webkit-user-select: none;
    align-items: center;
    justify-content: center;
}

body.light-mode .css-stage {
    background: transparent;
    color: #1e293b;
}

.css-canvas {
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: visible;
    position: relative;
    contain: layout;
    will-change: transform;
}

.css-pages-container {
    position: relative;
    background-color: transparent;
    transform-style: preserve-3d;
    perspective: 2400px;
    contain: layout;
    overflow: visible;
    will-change: transform;
}

.css-book {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}


.css-page {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
    background-color: #ffffff;
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.05);
    box-sizing: border-box;
    z-index: 5;
}

.css-page.ic-page-empty {
    background-color: transparent !important;
    background-image: none !important;
    box-shadow: none !important;
    border: none !important;
}

.css-page.ic-page-empty .css-page-content {
    background: transparent !important;
}

.css-leaf-face.ic-page-empty {
    background-color: transparent !important;
    box-shadow: none !important;
    border: none !important;
}

.css-leaf-face.ic-page-empty .css-page-content {
    background: transparent !important;
}

.css-page-left {
    left: 0;
    border-radius: 4px 0 0 4px;
    border-right: 1px solid rgba(0, 0, 0, 0.08);
    transform: translateZ(-1px);
}

.css-page-right {
    right: 0;
    border-radius: 0 4px 4px 0;
    border-left: 1px solid rgba(0, 0, 0, 0.08);
    transform: translateZ(-1px);
}

.css-leaf {
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    transform-style: preserve-3d;
    transform-origin: left center;
    z-index: 10;
    pointer-events: none;
    will-change: transform;
}

.css-leaf-face {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    background-color: #ffffff;
    box-sizing: border-box;
    transform-style: preserve-3d;
}

/* Single page view mode overrides */
.css-pages-container.css-single-page .css-page-left {
    display: none !important;
}

.css-pages-container.css-single-page .css-page-right {
    left: 0 !important;
    width: 100% !important;
    border-left: none !important;
    border-radius: 4px !important;
}

.css-pages-container.css-single-page .css-leaf {
    left: 0 !important;
    width: 100% !important;
    transform-origin: 0 0 !important;
}

.css-pages-container.css-single-page .css-leaf-front {
    border-left: none !important;
    border-radius: 4px !important;
}

.css-pages-container.css-single-page .css-leaf-back {
    display: none !important;
}

.css-leaf-front {
    z-index: 2;
    transform: rotateY(0deg) translateZ(0.5px);
    border-radius: 0 4px 4px 0;
    border-left: 1px solid rgba(0, 0, 0, 0.08);
}

.css-leaf-back {
    z-index: 1;
    transform: rotateY(180deg) translateZ(0.5px);
    border-radius: 4px 0 0 4px;
    border-right: 1px solid rgba(0, 0, 0, 0.08);
}

.css-page-content {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #ffffff;
    box-sizing: border-box;
}

.css-page-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
    will-change: opacity;
}

/* Disable opacity transition during flips/drags to prevent Chromium 3D layering anomalies */
.css-turning .css-page-background,
.ic-dragging-leaf .css-page-background {
    transition: none !important;
}

.css-page-background.loaded {
    opacity: 1;
    will-change: auto;
}

.css-page-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 3px solid rgba(0, 0, 0, 0.08);
    border-top-color: #6366f1;
    animation: spin 1s infinite linear;
}

/* Side navigation buttons styling mapping other adapters */
.css-stage .ic-side {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 70px;
    background: rgba(15, 17, 21, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #e6e8ee;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    z-index: 25;
    transition: all 0.2s ease;
    outline: none;
    backdrop-filter: blur(4px);
}

.css-stage .ic-side:hover {
    background: rgba(15, 17, 21, 0.7);
    color: #ffd700;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.15);
}

.css-stage .ic-side-prev {
    left: 20px;
}

.css-stage .ic-side-next {
    right: 20px;
}

.css-stage .ic-side-disabled {
    opacity: 0;
    pointer-events: none;
}

.css-stage.ic-fullscreen {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 99999 !important;
}

/* Fullscreen — library background on the fullscreen root; stages stay transparent */
.renderer-container.ic-fullscreen {
    background-color: #07080d;
    background-image: linear-gradient(rgba(15, 12, 41, 0.75), rgba(36, 36, 62, 0.8)), var(--library-bg-image);
    background-size: cover;
    background-position: center;
}

body.light-mode .renderer-container.ic-fullscreen {
    background-color: #f3f5fb;
    background-image: linear-gradient(rgba(253, 251, 247, 0.8), rgba(240, 236, 224, 0.85)), var(--library-bg-image);
}

.st-stage.ic-fullscreen,
.css-stage.ic-fullscreen,
.ic-fullscreen .st-stage,
.ic-fullscreen .css-stage {
    background: transparent !important;
}

body.light-mode .st-stage.ic-fullscreen,
body.light-mode .css-stage.ic-fullscreen,
body.light-mode .ic-fullscreen .st-stage,
body.light-mode .ic-fullscreen .css-stage {
    background: transparent !important;
}

.css-pages-container.ic-dragging-leaf,
.css-pages-container.ic-dragging-leaf *,
.renderer-container.ic-dragging-leaf,
.renderer-container.ic-dragging-leaf * {
    cursor: grabbing !important;
}

/* =========================================================
   Empty Page 0 / Cover Page Spread Transparency Enhancements
   ========================================================= */

/* Empty-page chrome only — book glow is pure CSS on .book-glow-host */

.css-pages-container:has(.ic-page-empty) .css-page {
    border: none !important;
}

/* =========================================================
   Drag and Drop Overlay Styles
   ========================================================= */

.drag-drop-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(7, 8, 13, 0.85);
    backdrop-filter: blur(12px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.drag-drop-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.drag-drop-content {
    border: 3px dashed rgba(217, 119, 6, 0.4);
    background: rgba(15, 17, 26, 0.6);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(217, 119, 6, 0.15);
    transform: scale(0.9);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.drag-drop-overlay.active .drag-drop-content {
    transform: scale(1);
    border-color: rgba(217, 119, 6, 0.8);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 40px rgba(217, 119, 6, 0.3);
}

.drag-drop-icon {
    font-size: 80px;
    line-height: 1;
    margin-bottom: 10px;
    animation: drag-bounce 1.5s infinite alternate ease-in-out;
}

@keyframes drag-bounce {
    0% { transform: translateY(0); }
    100% { transform: translateY(-10px); }
}

.drag-drop-title {
    font-family: 'Cinzel', serif;
    font-weight: 700;
    font-size: 24px;
    color: #ffd700;
    letter-spacing: 0.05em;
}

.drag-drop-desc {
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: rgba(232, 235, 243, 0.7);
    line-height: 1.5;
}

/* Light mode overrides */
body.light-mode .drag-drop-overlay {
    background: rgba(243, 245, 251, 0.85);
}

body.light-mode .drag-drop-content {
    border-color: rgba(124, 58, 237, 0.4);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1), 0 0 30px rgba(124, 58, 237, 0.1);
}

body.light-mode .drag-drop-overlay.active .drag-drop-content {
    border-color: rgba(124, 58, 237, 0.8);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15), 0 0 40px rgba(124, 58, 237, 0.25);
}

body.light-mode .drag-drop-title {
    color: #4f46e5;
}

body.light-mode .drag-drop-desc {
    color: rgba(30, 41, 59, 0.8);
}

/* --- Mobile / touch-friendly layout (touch devices only — not narrow desktop windows) --- */
@media (max-width: 768px) and (hover: none) and (pointer: coarse) {
    body {
        overflow: auto;
    }

    .app-container {
        min-height: 100vh;
        height: auto;
    }

    .header {
        padding: calc(10px + var(--safe-top)) 12px 12px;
    }

    .header-content {
        padding: 0;
    }

    .header-top {
        flex-wrap: nowrap;
        align-items: center;
        gap: 8px;
        margin-bottom: 0;
    }

    .header-left {
        flex: 1;
        min-width: 0;
        gap: 8px;
    }

    .header-right {
        width: auto;
        flex-shrink: 0;
        justify-content: flex-end;
        margin-left: 0;
        gap: 8px;
    }

    .header-right.upload-section {
        width: auto;
        flex-direction: row;
        flex-wrap: nowrap;
    }

    /* Compact icon-only Add Book control — keeps the title row uncluttered */
    .header-right .file-label:not(.file-label--icon-only) {
        width: 40px;
        min-width: 40px;
        height: 40px;
        padding: 0;
        justify-content: center;
    }

    .header-right .file-label .file-input-text {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    .header-right .file-label .upload-svg {
        width: 18px;
        height: 18px;
    }

    .header-right .file-info,
    .header-right .error-message {
        display: none;
    }

    .app-title {
        flex: 1;
        min-width: 0;
        font-size: 0.95rem;
        letter-spacing: 0.03em;
        line-height: 1.15;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .header-right-controls {
        width: 100%;
        justify-content: space-between;
    }

    .header-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .library-tomes {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }

    .library-tome-btn {
        min-height: 44px;
        padding: 0 12px;
    }

    .hamburger-menu,
    .search-toggle-btn {
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
        flex-shrink: 0;
    }

    .hamburger-menu svg,
    .search-toggle-btn svg {
        width: 20px;
        height: 20px;
    }

    .profile-menu-transfer-btn,
    .file-label,
    .search-btn,
    .search-nav-btn {
        min-width: 44px;
        min-height: 44px;
    }

    .search-sidebar-toolbar {
        padding: 10px 12px;
    }

    .search-sidebar-toolbar .search-query-row {
        gap: 6px;
    }

    .search-sidebar-toolbar .search-controls-row {
        gap: 6px;
    }

    .search-sidebar-toolbar .search-toolbar-actions {
        gap: 4px;
    }

    .search-sidebar-toolbar #search-input {
        height: 40px;
        font-size: 13px;
    }

    .search-sidebar-toolbar .glass-select-trigger {
        height: 36px;
        padding: 0 28px 0 10px;
        font-size: 12px;
    }

    .search-sidebar-toolbar .search-btn,
    .search-sidebar-toolbar .search-nav-btn {
        width: 36px;
        height: 36px;
        min-width: 36px;
        min-height: 36px;
    }

    .search-sidebar-toolbar .search-btn svg,
    .search-sidebar-toolbar .search-nav-btn svg {
        width: 16px;
        height: 16px;
    }

    .main-content {
        min-height: 55vh;
    }

    .app-sidebar {
        width: min(92vw, 360px);
    }
}

@media (hover: none) and (pointer: coarse) {
    .ic-toolbar {
        opacity: 1 !important;
        transform: translateX(-50%) translateY(0) !important;
        pointer-events: auto !important;
        width: calc(100vw - 16px);
        max-width: 100%;
        padding: 8px 10px;
        gap: 4px;
        flex-wrap: nowrap;
        justify-content: space-between;
        box-sizing: border-box;
    }

    .ic-page-info {
        flex: 0 0 auto;
        flex-shrink: 0;
        white-space: nowrap;
        gap: 4px;
        padding: 0 4px;
        font-size: 12px;
    }

    .ic-page-input {
        width: 42px;
        min-width: 36px;
        padding: 5px 4px;
        font-size: 12px;
    }

    .ic-page-total {
        font-size: 12px;
        white-space: nowrap;
    }

    .ic-btn {
        width: 34px;
        height: 34px;
        flex-shrink: 0;
    }

    .ic-divider {
        margin: 0 4px;
        flex-shrink: 0;
    }

    .ic-toolbar-actions {
        display: inline-flex;
        align-items: center;
        gap: 2px;
        flex-shrink: 0;
    }

    .drag-drop-overlay {
        display: none !important;
    }
}

/* --- Touch reading mode (immersive PDF) --- */

.reading-menu-btn {
    display: none;
    position: fixed;
    top: calc(12px + var(--safe-top));
    left: calc(12px + var(--safe-left));
    z-index: 250;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 12px;
    background: rgba(20, 22, 28, 0.88);
    color: #fff;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.reading-menu-btn svg {
    width: 22px;
    height: 22px;
}

body.light-mode .reading-menu-btn {
    background: rgba(255, 255, 255, 0.92);
    color: #0f172a;
    border-color: rgba(15, 23, 42, 0.14);
}

.reading-menu-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 150;
    background: rgba(0, 0, 0, 0.45);
}

@media (hover: none) and (pointer: coarse) {
    body.reading-mode .reading-menu-btn {
        display: none !important;
    }

    body.reading-mode .reading-menu-backdrop:not(.hidden) {
        display: block;
    }

    body.reading-mode .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 200;
        transform: translateY(-100%);
        transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        pointer-events: none;
        padding-top: var(--safe-top);
        max-height: 85vh;
        overflow-y: auto;
    }

    body.reading-mode.reading-app-menu-open .header {
        transform: translateY(0);
        pointer-events: auto;
    }

    body.reading-mode .main-content {
        flex: 1;
        min-height: 0;
        height: 100dvh;
        align-items: stretch;
        background-image: linear-gradient(rgba(15, 12, 41, 0.75), rgba(36, 36, 62, 0.8)), var(--library-bg-image);
        background-size: cover;
        background-position: center;
    }

    body.reading-mode .app-container {
        height: 100dvh;
        min-height: 100dvh;
    }

    body.light-mode.reading-mode .main-content {
        background-image: linear-gradient(rgba(253, 251, 247, 0.8), rgba(240, 236, 224, 0.85)), var(--library-bg-image);
    }

    body.reading-mode .renderer-container {
        height: 100%;
    }

    body.reading-mode .ic-side {
        display: none;
    }

    body.reading-mode .ic-toolbar {
        position: fixed !important;
        left: 50% !important;
        right: auto !important;
        bottom: var(--safe-bottom) !important;
        width: calc(100vw - 16px) !important;
        max-width: 100% !important;
        transform: translateX(-50%) translateY(0) !important;
        opacity: 1 !important;
        z-index: 120 !important;
        flex-wrap: nowrap !important;
        padding-left: max(10px, var(--safe-left)) !important;
        padding-right: max(10px, var(--safe-right)) !important;
        box-sizing: border-box !important;
    }

    body.reading-mode .st-canvas,
    body.reading-mode .css-canvas {
        height: 100% !important;
    }

    body.reading-mode .st-stage,
    body.reading-mode .css-stage {
        height: 100%;
    }
}

.ic-touch-panning,
.ic-panning {
    touch-action: none;
    cursor: grabbing;
}

@media (hover: none) and (pointer: coarse) {
    .renderer-container .css-canvas,
    .renderer-container .st-canvas {
        touch-action: none;
    }
}