/* PDF Reader Styles - Styles scoped to #books-section only */



/* Books sidebar specific width override */
#books-section .sidebar {
    width: 280px;
    flex-shrink: 0;
}

#books-section .sidebar-section {
    padding: 20px;
    border-bottom: 1px solid #f0f0f0;
}

#books-section .sidebar-section-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #666;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#books-section .series-list,
#books-section .book-list {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

#books-section .series-item,
#books-section .book-item {
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    border-left: 2px solid transparent;
}

#books-section .series-item:hover {
    background: #f0f0f0;
}

#books-section .book-item:hover {
    background: #f0f0f0;
    border-left-color: #667eea;
}

#books-section .series-item.active {
    background: #e8f0fe;
    color: #667eea;
}

#books-section .book-item.current {
    background: linear-gradient(135deg, #ff8ba7 0%, #ffb3c1 100%);
    border-left-color: transparent;
    color: white;
}

#books-section .series-count {
    margin-left: auto;
    background: #f0f0f0;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
    color: #999;
}

#books-section .series-item.active .series-count {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

#books-section .book-number {
    display: inline-block;
    width: 24px;
    height: 24px;
    line-height: 24px;
    text-align: center;
    background: #667eea;
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    flex-shrink: 0;
}

#books-section .book-item.current .book-number {
    background: white;
    color: #ff8ba7;
}

#books-section .loading-text,
#books-section .empty-text {
    padding: 20px;
    text-align: center;
    color: #999;
}

#books-section .empty-text p {
    margin-top: 10px;
}

#books-section .empty-text i {
    font-size: 2rem;
    color: #ddd;
}

#books-section .content {
    flex: 1;
    display: flex;
    flex-direction: row;
    overflow: hidden;
    height: 100%;
    min-height: 0;
    position: relative;
}

#books-section .pdf-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: 100%;
    min-height: 0;
    position: relative;
}

#books-section .pdf-container.hidden {
    display: none !important;
}

.hidden {
    display: none !important;
}

#books-section .pdf-toolbar {
    background: white;
    border-bottom: 1px solid #e0e0e0;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
    z-index: 10;
}

#books-section .pdf-toolbar-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

#books-section .pdf-btn {
    background: #f5f5f5;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
}

#books-section .pdf-btn:hover {
    background: #e0e0e0;
    transform: translateY(-1px);
}

#books-section .pdf-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#books-section .pdf-btn.active {
    background: #667eea;
    color: white;
}

#books-section .pdf-page-info {
    font-size: 0.9rem;
    color: #666;
    display: flex;
    align-items: center;
    gap: 5px;
}

#books-section .pdf-page-input {
    width: 50px;
    padding: 4px 6px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 0.9rem;
    text-align: center;
    background: white;
}

#books-section .pdf-page-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

#books-section .pdf-zoom-select {
    padding: 5px 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9rem;
    min-width: 100px;
}

#books-section .pdf-toolbar .pdf-btn.icon-only {
    padding: 8px 10px;
}

#books-section .pdf-toolbar .pdf-btn.icon-only i {
    margin-right: 0;
}

#books-section .pdf-viewer {
    flex: 1;
    overflow-y: auto;
    background: #525659;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    min-height: 0;
    max-height: 100%;
}

/* Audio Player Floating Bar */
#books-section .book-audio-player {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 30px;
    padding: 10px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    width: 90%;
    max-width: 650px;
}

#books-section .book-audio-player.inline-mode {
    position: static;
    transform: none;
    width: 100%;
    max-width: 480px;
    margin: 20px auto 0;
    box-shadow: none;
    background: #f8f9fa;
    border: none;
    border-radius: 12px;
    padding: 15px;
}

#books-section .book-audio-player.is-disabled {
    filter: grayscale(1);
    opacity: 0.6;
    pointer-events: none;
}

#books-section .audio-missing-msg {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    color: #ff4757;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 10;
}

#books-section .book-audio-player.is-disabled .audio-missing-msg {
    display: block;
}

#books-section .book-audio-player.inline-mode #audioCloseBtn {
    display: none;
}

#books-section .book-audio-player.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 20px);
}

#books-section .audio-controls {
    display: flex;
    align-items: center;
    width: 100%;
    gap: 15px;
}

#books-section .audio-btn {
    background: #667eea;
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

#books-section .audio-btn:hover {
    background: #5a6fd6;
    transform: scale(1.05);
}

#books-section .audio-btn.text-btn {
    width: auto;
    border-radius: 12px;
    padding: 0 10px;
    font-size: 0.85rem;
    font-weight: bold;
}

#books-section #audioCloseBtn {
    background: #f0f0f0;
    color: #666;
    width: 30px;
    height: 30px;
    font-size: 0.85rem;
}

#books-section #audioCloseBtn:hover {
    background: #e0e0e0;
    color: #ff4757;
}

#books-section .audio-progress-container {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
}

#books-section .audio-time {
    font-size: 0.8rem;
    color: #666;
    font-family: monospace;
    width: 45px;
    text-align: center;
}

#books-section .audio-progress-bar {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: #ddd;
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

#books-section .audio-progress-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    transition: all 0.2s ease;
}

#books-section .audio-progress-bar::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

#books-section .audio-speed-control {
    position: relative;
}

#books-section .audio-speed-menu {
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 5px 0;
    z-index: 101;
    min-width: 60px;
}

#books-section .audio-speed-menu.hidden {
    display: none;
}

#books-section .speed-option {
    padding: 5px 15px;
    font-size: 0.85rem;
    color: #333;
    cursor: pointer;
    text-align: center;
}

#books-section .speed-option:hover {
    background: #f0f0f0;
}

#books-section .speed-option.active {
    color: #667eea;
    font-weight: bold;
    background: #f0f8ff;
}

#books-section .loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    border-radius: 8px;
}

#books-section .loading-overlay.active {
    display: flex;
}

#books-section .loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

#books-section .loading-text {
    margin-top: 20px;
    color: white;
}

#books-section .pdf-canvas-container {
    display: none;
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-radius: 3px;
    margin-bottom: 20px;
}

#books-section .pdf-canvas-container canvas {
    display: block;
}

#books-section .pdf-pages-container {
    width: 100%;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
    flex-shrink: 0;
}

#books-section .pdf-page-canvas {
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-radius: 3px;
    display: block;
    max-width: 100%;
    max-height: 100%;
    flex-shrink: 0;
}

#books-section .bookmark-panel {
    width: 320px;
    background: white;
    border-left: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

#books-section .bookmark-panel.hidden {
    display: none !important;
}

#books-section .bookmark-header {
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
    background: #fafafa;
}

#books-section .bookmark-title {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

#books-section .bookmark-add-form {
    display: flex;
    gap: 10px;
}

#books-section .bookmark-add-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9rem;
}

#books-section .bookmark-add-input:focus {
    outline: none;
    border-color: #667eea;
}

#books-section .bookmark-add-btn {
    background: #667eea;
    border: none;
    color: white;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#books-section .bookmark-add-btn:hover {
    background: #5a6fd6;
}

#books-section .bookmark-list {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
}

#books-section .bookmark-item {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    border-left: 3px solid #667eea;
}

#books-section .bookmark-item:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

#books-section .bookmark-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

#books-section .bookmark-item-page {
    font-size: 0.85rem;
    color: #667eea;
    font-weight: 500;
}

#books-section .bookmark-item-actions {
    display: flex;
    gap: 8px;
}

#books-section .bookmark-item-btn {
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
    padding: 5px;
    border-radius: 3px;
    transition: all 0.3s ease;
}

#books-section .bookmark-item-btn:hover {
    color: #667eea;
    background: #e8f0fe;
}

#books-section .bookmark-item-btn.delete:hover {
    color: #e74c3c;
    background: #fdf2f2;
}

#books-section .bookmark-item-content {
    font-size: 0.9rem;
    color: #555;
    line-height: 1.5;
}

#books-section .bookmark-item-date {
    font-size: 0.8rem;
    color: #999;
    margin-top: 8px;
}

#books-section .bookmark-empty {
    text-align: center;
    padding: 40px 20px;
    color: #999;
}

#books-section .bookmark-empty i {
    font-size: 3rem;
    margin-bottom: 15px;
    color: #ddd;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}


/* Audiobook View Styles */
#books-section .audiobook-view {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: #fdfdfd;
    overflow-y: auto;
    text-align: center;
    transition: opacity 0.3s ease;
}

#books-section .audiobook-cover {
    width: 240px;
    height: 320px;
    margin-bottom: 30px;
    perspective: 1000px;
    cursor: pointer;
}

#books-section .audiobook-cover:hover .cover-placeholder,
#books-section .audiobook-cover:hover .cover-image {
    transform: translateY(-10px) rotateY(5deg);
    box-shadow: 0 25px 50px rgba(0,0,0,0.3);
}

#books-section .audiobook-cover::after {
    content: "点击阅读电子书";
    position: absolute;
    bottom: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.85rem;
    color: #667eea;
    opacity: 0;
    transition: all 0.3s ease;
    font-weight: 600;
}

#books-section .audiobook-cover:hover::after {
    opacity: 1;
    bottom: -35px;
}

#books-section .cover-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    position: relative;
    padding: 20px;
    transition: transform 0.5s ease;
}

#books-section .cover-placeholder i {
    font-size: 5rem;
    margin-bottom: 20px;
    opacity: 0.8;
}

#books-section .book-title-overlay {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.4;
}

#books-section .cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    transition: transform 0.5s ease;
    display: block;
}

#books-section .cover-image.hidden {
    display: none;
}

#books-section .audiobook-info h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: #333;
}

#books-section .audiobook-info p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
}

#books-section .audiobook-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

#books-section .btn-read-pdf {
    background: #ff8ba7;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(255, 139, 167, 0.3);
}

#books-section .btn-read-pdf:hover {
    background: #ff7494;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 139, 167, 0.4);
}

#books-section .no-file-notice {
    color: #999;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Note: .page-section styles are defined in style.css (shared across all pages) */

/* Responsive Design */
@media (max-width: 1200px) {
    #books-section .bookmark-panel {
        width: 280px;
    }
}

@media (max-width: 992px) {
    #books-section .bookmark-panel {
        width: 250px;
    }
}

@media (max-width: 768px) {
    #books-section .bookmark-panel {
        position: fixed;
        right: 0;
        top: 0;
        bottom: 0;
        z-index: 2000;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transform: translateX(100%);
        transition: transform 0.3s ease;
        width: 280px;
    }

    #books-section .bookmark-panel.active {
        transform: translateX(0);
        display: flex !important;
    }

    #books-section .pdf-viewer {
        padding-bottom: 80px;
    }

    #books-section .pdf-toolbar {
        flex-direction: column;
        gap: 10px;
        padding: 10px;
    }

    #books-section .pdf-toolbar-group {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    #books-section .pdf-btn span {
        display: none;
        /* Hide text on small buttons to save space */
    }
}

@media (max-width: 480px) {
    #books-section .pdf-btn {
        padding: 8px;
    }

    #books-section .pdf-zoom-select {
        min-width: 80px;
    }
}