* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #1a1712;
    --bg-darker: #12100e;
    --bg-sidebar: #1f1b15;
    --accent-gold: #7a9e7e;
    --accent-amber: #6b8f6e;
    --accent-copper: #5a7d5e;
    --text-light: #f5f0e6;
    --text-muted: #9a9080;
    --border-dark: #2a2520;
    --paper-cream: #fdf8e8;
    --paper-aged: #f5ecd8;
    --paper-cover: #7a9e7e;

    --bg-body: var(--bg-darker);
    --bg-card: var(--bg-sidebar);
    --bg-muted: var(--bg-dark);
    --accent-primary: var(--accent-gold);
    --accent-primary-hover: var(--accent-amber);
    --text-primary: var(--text-light);
    --text-secondary: var(--text-muted);
    --border-default: var(--border-dark);
    --border-subtle: var(--border-dark);
}

body {
    font-family: Georgia, 'Times New Roman', serif;
    background: var(--bg-darker);
    color: var(--text-light);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.top-toolbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 54px;
    background: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-dark);
    display: flex;
    align-items: center;
    padding: 0 15px;
    gap: 8px;
    z-index: 200;
}

.toolbar-section {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 8px;
    border-right: 1px solid var(--border-dark);
}

.toolbar-section:last-child {
    border-right: none;
}

.toolbar-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s ease;
}

.toolbar-btn:hover {
    background: var(--bg-dark);
    color: var(--text-light);
}

.toolbar-btn.active {
    background: var(--accent-gold);
    color: var(--bg-darker);
    border-color: var(--accent-gold);
}

.toolbar-btn svg {
    width: 16px;
    height: 16px;
}

.color-indicator {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.3);
}

#ink-color-btn {
    padding: 6px;
}

.toolbar-btn.font-btn {
    width: auto;
    padding: 0 10px;
    font-family: Georgia, serif;
    font-size: 12px;
}

.toolbar-btn.size-btn {
    width: auto;
    padding: 0 8px;
    font-size: 12px;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border-dark);
    margin: 0 4px;
}

.action-btn {
    padding: 6px 14px;
    background: var(--accent-gold);
    border: none;
    border-radius: 4px;
    color: var(--bg-darker);
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: var(--accent-amber);
}

.action-btn.secondary {
    background: transparent;
    border: 1px solid var(--border-dark);
    color: var(--text-light);
}

.action-btn.secondary:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    padding: 8px 0;
    min-width: 140px;
    max-height: 250px;
    overflow-y: auto;
    z-index: 300;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.dropdown-content.show {
    display: block;
}

.dropdown-item {
    padding: 8px 14px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-muted);
    transition: all 0.15s ease;
}

.dropdown-item:hover {
    background: var(--bg-dark);
    color: var(--text-light);
}

.dropdown-item.active {
    color: var(--accent-gold);
}

.color-picker-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    padding: 12px;
    z-index: 300;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.color-picker-dropdown.show {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
}

.color-swatch {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.15s ease;
}

.color-swatch:hover {
    transform: scale(1.1);
    border-color: var(--accent-gold);
}

.color-swatch.active {
    border-color: var(--accent-gold);
}

.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-top: 54px;
    background: var(--bg-darker);
    position: relative;
    min-height: 0;
    overflow: hidden;
}

.book-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    perspective: 2000px;
    overflow-y: auto;
    min-height: 0;
    background: 
        radial-gradient(ellipse at center, rgba(42, 37, 32, 0.5) 0%, var(--bg-darker) 70%);
}

.book {
    display: flex;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.page-spread {
    display: flex;
    position: relative;
}

.page {
    width: min(420px, 42vw);
    height: min(560px, 60vw);
    max-width: 420px;
    max-height: 560px;
    background: var(--paper-cover);
    position: relative;
    box-shadow: 
        inset -1px 0 0 rgba(0,0,0,0.05),
        3px 0 15px rgba(0,0,0,0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: background 0.3s ease;
}

.page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(255,255,255,0.03) 0%, transparent 70%),
        radial-gradient(ellipse at 80% 50%, rgba(0,0,0,0.02) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.page.right {
    overflow: hidden;
    box-shadow: 
        inset 1px 0 0 rgba(0,0,0,0.05),
        -3px 0 15px rgba(0,0,0,0.3);
}

.page.left {
    border-radius: 8px 0 0 8px;
    margin-right: 2px;
}

.page.right {
    border-radius: 0 8px 8px 0;
    margin-left: 2px;
}

.page-spine-shadow {
    position: absolute;
    top: 0;
    width: 30px;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.page.left .page-spine-shadow {
    right: 0;
    background: linear-gradient(to left, rgba(0,0,0,0.12) 0%, rgba(0,0,0,0.06) 40%, transparent 100%);
}

.page.right .page-spine-shadow {
    left: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.12) 0%, rgba(0,0,0,0.06) 40%, transparent 100%);
}

.page-spread.cover-mode .page-spine-shadow {
    display: none;
}

.page.cover {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-spread.cover-mode {
    justify-content: center;
}

.page-spread.cover-mode .page.right {
    display: none;
}

.page-spread.cover-mode .page.left {
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}

.open-book-btn {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 32px;
    font-family: 'IM Fell English', serif;
    font-size: 1.1rem;
    background: rgba(245, 240, 230, 0.15);
    color: inherit;
    border: 1px solid currentColor;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.8;
    z-index: 25;
    letter-spacing: 1px;
}

.open-book-btn:hover {
    background: rgba(245, 240, 230, 0.25);
    opacity: 1;
    transform: translateX(-50%) scale(1.05);
}

@keyframes coverFadeIn {
    from { opacity: 0; transform: translateX(-50%) scale(0.95); }
    to { opacity: 1; transform: translateX(-50%) scale(1); }
}

.page-spread.cover-mode .page.left {
    animation: coverFadeIn 0.5s ease forwards;
}

.page-header {
    position: absolute;
    top: 30px;
    left: 40px;
    right: 40px;
    font-size: clamp(1rem, 3vw, 1.4rem);
    color: rgba(60, 50, 30, 0.7);
    border-bottom: 1px solid rgba(90, 70, 40, 0.3);
    padding-bottom: 10px;
    pointer-events: none;
    user-select: none;
}

.page-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.page-lines-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.page-lines {
    position: absolute;
    top: 15%;
    left: 9%;
    right: 9%;
    bottom: 11%;
    pointer-events: none;
}

.page-content {
    position: absolute;
    top: 15%;
    left: 9%;
    right: 9%;
    bottom: 13%;
    height: auto;
    outline: none;
    font-size: clamp(12px, 2vw, 15px);
    line-height: clamp(22px, 3.5vw, 28px);
    color: #1a1a1a;
    overflow: hidden;
    overflow-x: hidden;
    white-space: pre-wrap;
    word-wrap: break-word;
    caret-color: #1a1a1a;
    z-index: 10;
}

.page-content ul, .page-content ol {
    padding-left: 24px;
    margin: 8px 0;
}

.page-content li {
    margin: 4px 0;
    line-height: 28px;
}

.page-content ul {
    list-style-type: disc;
}

.page-content ul.arrow-list {
    list-style: none;
    padding-left: 0;
}

.page-content ul.arrow-list li {
    padding-left: 20px;
    position: relative;
}

.page-content ul.arrow-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: inherit;
}

.page-content ol {
    list-style-type: decimal;
}

.page-content:empty::before {
    content: attr(data-placeholder);
    color: #aaa;
}

.cover-content-area {
    position: absolute;
    top: 12%;
    left: 10%;
    right: 10%;
    bottom: 18%;
    outline: none;
    font-family: 'Cinzel', 'Palatino Linotype', 'Book Antiqua', Palatino, serif;
    font-size: clamp(0.9rem, 2.5vw, 1.2rem);
    color: #f5f0e6;
    text-align: center;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    caret-color: #f5f0e6;
    z-index: 20;
    line-height: 1.8;
    cursor: text;
    padding: 5%;
}

.cover-content-area:empty::before {
    content: attr(data-placeholder);
    color: rgba(245, 240, 230, 0.35);
}

.cover-content-area:focus {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.cover-border {
    position: absolute;
    top: 4%;
    left: 4%;
    right: 4%;
    bottom: 4%;
    border: 2px solid rgba(245, 240, 230, 0.3);
    border-radius: 4px;
    pointer-events: none;
}

.toc-title {
    position: absolute;
    top: 30px;
    left: 40px;
    right: 40px;
    font-size: 1.4rem;
    color: rgba(60, 50, 30, 0.7);
    border-bottom: 1px solid rgba(90, 70, 40, 0.3);
    padding-bottom: 10px;
    pointer-events: none;
    user-select: none;
}

.draw-canvas {
    position: absolute;
    top: 0;
    left: 0;
    cursor: crosshair;
    touch-action: none;
}

.page-footer {
    position: absolute;
    bottom: 3%;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 7%;
    font-size: clamp(0.6rem, 1.5vw, 0.75rem);
    color: rgba(80, 60, 30, 0.5);
}

.word-count {
    font-size: 0.7rem;
    color: rgba(80, 60, 30, 0.4);
}

.page-footer-overlay {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: rgba(80, 60, 30, 0.55);
    z-index: 10;
    background: rgba(253, 248, 232, 0.9);
    padding: 1px 8px;
    border-radius: 8px;
    pointer-events: none;
    user-select: none;
    letter-spacing: 1px;
    font-family: 'Palatino Linotype', serif;
}

.page-footer-overlay.cover-footer {
    background: rgba(122, 158, 126, 0.9);
    color: rgba(245, 240, 230, 0.9);
}

.book-type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    max-height: 150px;
    overflow-y: auto;
}

.book-type-chip {
    padding: 8px 10px;
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.book-type-chip:hover, .book-type-chip.active {
    background: var(--accent-gold);
    color: var(--bg-darker);
    border-color: var(--accent-gold);
}

.eraser-size-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.eraser-size-btn {
    padding: 8px;
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    user-select: none;
    min-width: 32px;
}

.eraser-size-btn:hover, .eraser-size-btn.active {
    background: var(--accent-gold);
    color: var(--bg-darker);
    border-color: var(--accent-gold);
}

.style-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.style-chip {
    padding: 6px 10px;
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 20px;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.style-chip:hover, .style-chip.active {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.autosave-indicator {
    position: absolute;
    top: 60px;
    right: 20px;
    font-size: 0.75rem;
    color: var(--accent-gold);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.autosave-indicator.visible {
    opacity: 1;
}

.saved-books-toggle {
    padding: 8px 14px;
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s ease;
}

.saved-books-toggle:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.saved-books-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    padding: 8px 0;
    min-width: 200px;
    max-height: 250px;
    overflow-y: auto;
    z-index: 300;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.saved-books-dropdown.show {
    display: block;
}

.saved-book-item {
    padding: 10px 14px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.saved-book-item:hover {
    background: var(--bg-dark);
}

.saved-book-item.active {
    background: rgba(122, 158, 126, 0.15);
    border-left: 3px solid var(--accent-gold);
}

.saved-book-item .title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 4px;
}

.saved-book-item .date {
    font-size: 11px;
    color: var(--text-muted);
}

.saved-book-item .delete-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    font-size: 14px;
    opacity: 0;
    transition: all 0.2s ease;
}

.saved-book-item:hover .delete-btn {
    opacity: 1;
}

.saved-book-item .delete-btn:hover {
    color: #c62828;
}

.saved-book-item {
    position: relative;
}

.new-book-btn {
    padding: 10px 14px;
    background: transparent;
    border: none;
    border-top: 1px solid var(--border-dark);
    color: var(--accent-gold);
    cursor: pointer;
    font-size: 12px;
    text-align: center;
    width: 100%;
}

.new-book-btn:hover {
    background: var(--bg-dark);
}

.page-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 15px;
    background: var(--bg-dark);
    border-top: 1px solid var(--border-dark);
    flex-shrink: 0;
    height: 60px;
    z-index: 100;
    position: relative;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

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

.nav-btn:disabled:hover {
    border-color: var(--border-dark);
    color: var(--text-light);
}

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

.add-page-btn {
    background: var(--accent-gold);
    color: var(--bg-darker);
    border-color: var(--accent-gold);
}

.add-page-btn:hover {
    background: var(--accent-amber);
}

@keyframes pageFlipRight {
    0% { transform: rotateY(0deg); }
    100% { transform: rotateY(-90deg); opacity: 0.3; }
}

@keyframes pageFlipLeft {
    0% { transform: rotateY(0deg); }
    100% { transform: rotateY(90deg); opacity: 0.3; }
}

.page.flipping-right {
    animation: pageFlipRight 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.page.flipping-left {
    animation: pageFlipLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.image-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 300;
}

.image-modal.visible {
    display: flex;
}

.image-modal-content {
    background: var(--bg-sidebar);
    border-radius: 12px;
    padding: 20px;
    max-width: 400px;
    width: 90%;
}

.image-modal-content h3 {
    margin-bottom: 15px;
    color: var(--accent-gold);
}

.image-drop-zone {
    border: 2px dashed var(--border-dark);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    margin-bottom: 15px;
    transition: all 0.2s ease;
}

.image-drop-zone:hover {
    border-color: var(--accent-gold);
}

.browse-btn {
    width: 100%;
    padding: 10px;
    background: var(--accent-gold);
    color: var(--bg-dark);
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 10px;
    transition: opacity 0.2s ease;
}

.browse-btn:hover {
    opacity: 0.85;
}

#image-input {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    background: var(--bg-dark);
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    color: var(--text-light);
    font-size: 0.85rem;
}

#image-input::-webkit-file-upload-button {
    display: none;
}

#image-input::file-selector-button {
    display: none;
}

.close-modal {
    width: 100%;
    padding: 10px;
    background: var(--bg-dark);
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    color: var(--text-light);
    cursor: pointer;
}

.export-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 300;
}

.export-modal.visible {
    display: flex;
}

.export-modal-content {
    background: var(--bg-sidebar);
    border-radius: 12px;
    padding: 25px;
    max-width: 350px;
    width: 90%;
}

.export-modal-content h3 {
    margin-bottom: 20px;
    text-align: center;
    color: var(--accent-gold);
}

.export-option {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    color: var(--text-light);
    cursor: pointer;
    margin-bottom: 10px;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.export-option:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.export-close {
    width: 100%;
    padding: 10px;
    background: var(--bg-dark);
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    color: var(--text-light);
    cursor: pointer;
    margin-top: 10px;
}

.img-wrapper {
    position: relative;
    cursor: grab;
    user-select: none;
    display: inline-block;
    margin: 8px 4px;
    vertical-align: middle;
    border-radius: 4px;
    transition: box-shadow 0.15s ease;
    outline: 2px solid transparent;
    outline-offset: 3px;
}

.img-wrapper:active {
    cursor: grabbing;
}

.img-wrapper.selected {
    outline: 2px solid var(--accent-gold);
    outline-offset: 3px;
}

.img-wrapper img {
    width: 100%;
    display: block;
    border-radius: 4px;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

.resize-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--accent-gold);
    border: 2px solid white;
    border-radius: 50%;
    display: none;
    z-index: 10;
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

.img-wrapper.selected .resize-handle {
    display: block;
}

.resize-handle.rh-nw { top: -6px; left: -6px; cursor: nw-resize; }
.resize-handle.rh-ne { top: -6px; right: -6px; cursor: ne-resize; }
.resize-handle.rh-sw { bottom: -6px; left: -6px; cursor: sw-resize; }
.resize-handle.rh-se { bottom: -6px; right: -6px; cursor: se-resize; }

.img-delete-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 20px;
    height: 20px;
    background: #e74c3c;
    border: 2px solid white;
    border-radius: 50%;
    color: white;
    font-size: 12px;
    font-weight: bold;
    line-height: 16px;
    text-align: center;
    cursor: pointer;
    display: none;
    z-index: 15;
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
    padding: 0;
}

.img-delete-btn:hover {
    background: #c0392b;
}

.img-wrapper.selected .img-delete-btn {
    display: block;
}

.img-wrapper.dragging {
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
    opacity: 0.9;
    z-index: 100;
    transition: none;
}

.resize-size-tooltip {
    position: absolute;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.8);
    color: #fff;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-family: monospace;
    white-space: nowrap;
    pointer-events: none;
    display: none;
    z-index: 20;
}

.img-wrapper.resizing .resize-size-tooltip {
    display: block;
}

.hidden-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    overflow: hidden;
}

.book-settings-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    padding: 12px;
    min-width: 220px;
    z-index: 300;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.book-settings-dropdown.show {
    display: block;
}

.book-settings-dropdown h4 {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 10px;
    margin-top: 12px;
}

.book-settings-dropdown h4:first-child {
    margin-top: 0;
}

.page-color-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.page-color-grid .color-swatch {
    width: 100%;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.15s ease;
}

.page-color-grid .color-swatch:hover {
    transform: scale(1.05);
    border-color: var(--accent-gold);
}

.page-color-grid .color-swatch.active {
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 2px var(--bg-dark);
}

.stats-display {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 12px;
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-value {
    color: var(--accent-gold);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.help-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    transition: all 0.2s ease;
}

.help-btn:hover {
    background: var(--bg-dark);
    color: var(--accent-gold);
}

.help-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 400;
}

.help-modal.visible {
    display: flex;
}

.help-modal-content {
    background: var(--bg-sidebar);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.help-modal-content h3 {
    color: var(--accent-gold);
    margin-bottom: 20px;
    font-size: 1.2rem;
    text-align: center;
}

.shortcut-group {
    margin-bottom: 16px;
}

.shortcut-group h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.shortcut-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

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

.shortcut-keys {
    display: flex;
    gap: 4px;
}

.key {
    background: var(--bg-dark);
    border: 1px solid var(--border-dark);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.7rem;
    font-family: monospace;
    color: var(--text-light);
    min-width: 24px;
    text-align: center;
}

.shortcut-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 10px;
}

.template-card {
    padding: 14px;
    background: var(--bg-dark);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.template-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}

.template-card .template-icon {
    font-size: 1.5rem;
    margin-bottom: 6px;
}

.template-card .template-name {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 500;
}

.template-card .template-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.template-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 400;
}

.template-modal.visible {
    display: flex;
}

.template-modal-content {
    background: var(--bg-sidebar);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 30px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.template-modal-content h3 {
    color: var(--accent-gold);
    margin-bottom: 20px;
    font-size: 1.2rem;
    text-align: center;
}

.toolbar-section.template-section {
    border-right: none;
}

.template-section .action-btn {
    padding: 4px 10px;
    font-size: 0.7rem;
}

.thumbnail-toggle {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 150;
    transition: all 0.2s ease;
}

.thumbnail-toggle:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.thumbnail-sidebar {
    position: fixed;
    top: 54px;
    right: -280px;
    width: 260px;
    height: calc(100vh - 114px);
    background: var(--bg-sidebar);
    border-left: 1px solid var(--border-dark);
    overflow-y: auto;
    padding: 15px;
    z-index: 140;
    transition: right 0.3s ease;
}

.thumbnail-sidebar.open {
    right: 0;
}

.thumbnail-item {
    margin-bottom: 12px;
    border: 2px solid var(--border-dark);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    overflow: hidden;
}

.thumbnail-item:hover {
    border-color: var(--accent-gold);
}

.thumbnail-item.active {
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 2px rgba(122, 158, 126, 0.3);
}

.thumbnail-preview {
    width: 100%;
    height: 140px;
    background: var(--paper-cover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--text-muted);
    padding: 8px;
    overflow: hidden;
}

.thumbnail-label {
    padding: 6px 8px;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
    background: var(--bg-dark);
}

/* ================= BOOK-WRITER RESPONSIVE ================= */
@media (max-width: 1024px) {
    .top-toolbar {
        flex-wrap: wrap;
        height: auto;
        min-height: 54px;
        padding: 6px 10px;
        gap: 4px;
    }

    .toolbar-section {
        padding: 0 4px;
    }

    .main-area {
        margin-top: 54px;
    }

    .thumbnail-sidebar {
        width: 220px;
        right: -220px;
    }

    .thumbnail-preview {
        height: 110px;
    }
}

@media (max-width: 768px) {
    .page {
        width: min(340px, 85vw);
        height: min(460px, 115vw);
    }

    .book-container {
        padding: 10px;
    }

    .top-toolbar {
        padding: 4px 6px;
        gap: 2px;
    }

    .toolbar-section {
        padding: 0 3px;
        gap: 2px;
    }

    .toolbar-btn {
        width: 28px;
        height: 28px;
    }

    .toolbar-btn svg {
        width: 14px;
        height: 14px;
    }

    .toolbar-btn.font-btn,
    .toolbar-btn.size-btn {
        font-size: 10px;
        padding: 0 6px;
    }

    .action-btn {
        padding: 4px 10px;
        font-size: 10px;
    }

    .toolbar-divider {
        display: none;
    }

    .nav-btn {
        padding: 8px 12px;
        font-size: 0.75rem;
        gap: 4px;
    }

    .nav-btn span {
        display: none;
    }

    .page-nav {
        gap: 10px;
        padding: 10px;
        height: 50px;
    }

    .open-book-btn {
        padding: 8px 20px;
        font-size: 0.9rem;
        bottom: 20px;
    }

    .stats-display {
        display: none;
    }

    .help-btn {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }

    .saved-books-toggle {
        padding: 4px 10px;
        font-size: 10px;
    }

    .thumbnail-sidebar {
        width: 180px;
        right: -180px;
        padding: 10px;
    }

    .thumbnail-preview {
        height: 90px;
    }

    .thumbnail-toggle {
        width: 36px;
        height: 36px;
        bottom: 70px;
        right: 10px;
    }

    .help-modal-content {
        padding: 20px;
        margin: 10px;
    }

    .template-modal-content {
        padding: 20px;
    }

    .export-modal-content {
        padding: 20px;
    }

    .image-modal-content {
        padding: 15px;
    }

    .image-drop-zone {
        padding: 20px;
    }

    .toc-title {
        font-size: clamp(1rem, 3vw, 1.3rem);
        top: 6%;
        left: 9%;
        right: 9%;
    }
}

@media (max-width: 480px) {
    .page {
        width: 90vw;
        height: 120vw;
        max-width: 360px;
        max-height: 480px;
    }

    .book-container {
        padding: 5px;
    }

    .top-toolbar {
        padding: 2px 4px;
        gap: 1px;
    }

    .toolbar-btn {
        width: 24px;
        height: 24px;
    }

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

    .toolbar-btn.font-btn,
    .toolbar-btn.size-btn {
        font-size: 9px;
        padding: 0 4px;
    }

    .action-btn {
        padding: 3px 8px;
        font-size: 9px;
    }

    .action-btn span {
        display: none;
    }

    .page-nav {
        gap: 6px;
        padding: 8px;
        height: 44px;
    }

    .nav-btn {
        padding: 6px 10px;
        font-size: 0.7rem;
    }

    .add-page-btn {
        padding: 6px 10px;
    }

    .saved-books-toggle span {
        display: none;
    }

    .thumbnail-toggle {
        width: 32px;
        height: 32px;
        bottom: 60px;
        right: 8px;
    }

    .thumbnail-sidebar {
        width: 140px;
        right: -140px;
        padding: 8px;
    }

    .thumbnail-preview {
        height: 70px;
    }

    .top-toolbar .toolbar-section:first-child a span {
        display: none;
    }

    .top-toolbar .toolbar-section:first-child a {
        font-size: 0;
        padding: 0 4px;
    }

    .dropdown-content {
        min-width: 120px;
    }
}

@media (max-width: 360px) {
    .page {
        width: 92vw;
        height: 125vw;
        max-width: 300px;
        max-height: 400px;
    }

    .book-container {
        padding: 3px;
    }

    .top-toolbar {
        min-height: 44px;
    }
}