.cyber-theme {
    --primary: #0a0a12;
    --secondary: #1a1a2e;
    --accent: #00d9ff;
    --accent-alt: #ff0080;
    --text: #e0e0ff;
    --text-secondary: #a0a0c0;
    --panel: rgba(20, 20, 40, 0.95);
    --border: rgba(0, 217, 255, 0.2);
    --shadow: rgba(0, 217, 255, 0.1);
    --success: #00ff9d;
    --warning: #ffaa00;
}

body {
    margin: 0;
    padding: 0;
    background: var(--primary);
    color: var(--text);
    font-family: 'Segoe UI', 'Arial', sans-serif;
    height: 100vh;
    overflow: hidden;
}

.cyber-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: 
        radial-gradient(circle at 10% 20%, rgba(0, 217, 255, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255, 0, 128, 0.1) 0%, transparent 20%);
}

.cyber-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.header-left .cyber-title {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(45deg, var(--accent), var(--accent-alt));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}

.cyber-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.cyber-stats {
    display: flex;
    gap: 20px;
    font-size: 14px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    border: 1px solid var(--border);
}

.stat-item i {
    color: var(--accent);
}

.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.shelf-panel {
    width: 350px;
    border-right: 1px solid var(--border);
    background: var(--panel);
    display: flex;
    flex-direction: column;
}

.panel-header {
    padding: 15px;
    border-bottom: 1px solid var(--border);
}

.search-box {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 12px;
    margin-bottom: 15px;
}

.search-box i {
    color: var(--accent);
    margin-right: 8px;
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 14px;
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.cyber-btn {
    background: linear-gradient(145deg, rgba(0, 217, 255, 0.1), rgba(255, 0, 128, 0.1));
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.cyber-btn:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.cyber-btn.small {
    padding: 6px 10px;
    font-size: 12px;
}

.cyber-btn.accent {
    background: linear-gradient(145deg, var(--accent), var(--accent-alt));
    color: var(--primary);
}

.view-controls {
    display: flex;
    gap: 5px;
}

.view-btn {
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.view-btn.active {
    background: var(--accent);
    color: var(--primary);
    border-color: var(--accent);
}

.books-container {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
}

.book-card {
    background: linear-gradient(145deg, rgba(20, 20, 40, 0.9), rgba(10, 10, 25, 0.9));
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.book-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--shadow);
}

.book-card.active {
    border-color: var(--accent-alt);
    background: linear-gradient(145deg, rgba(40, 10, 40, 0.9), rgba(20, 20, 40, 0.9));
}

.book-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent), var(--accent-alt));
}

.book-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 5px;
    line-height: 1.3;
}

.book-author {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.book-meta {
    font-size: 10px;
    color: var(--accent);
    display: flex;
    justify-content: space-between;
}

.reader-panel {
    flex: 1;
    display: none;
    flex-direction: column;
    background: var(--panel);
}

.reader-panel.active {
    display: flex;
}

.reader-header {
    padding: 15px 25px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.reader-title h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
}

.book-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 3px;
}

.sep {
    margin: 0 8px;
}

.reader-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.content-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.font-controls, .mode-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ctrl-btn {
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.font-size-label {
    font-size: 14px;
    min-width: 40px;
    text-align: center;
}

.text-display {
    flex: 1;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 25px;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
}

.text-display.night-mode {
    background: #1a1a2e;
    color: #f0f0ff;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 15px;
    color: var(--accent);
    opacity: 0.5;
}

.reader-footer {
    margin-top: 20px;
}

.navigation {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-btn {
    padding: 8px 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
}

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

.progress-info {
    flex: 1;
}

.progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 5px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-alt));
    width: 0%;
    transition: width 0.3s;
}

.page-info {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
}

.progress-percent {
    color: var(--accent);
}

.side-panel {
    position: fixed;
    top: 0;
    right: -350px;
    width: 300px;
    height: 100%;
    background: var(--panel);
    border-left: 1px solid var(--border);
    transition: right 0.3s;
    z-index: 1000;
}

.side-panel.active {
    right: 0;
}

.side-header {
    padding: 15px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.side-header h3 {
    margin: 0;
    font-size: 16px;
}

.close-panel {
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
    font-size: 16px;
}

.side-content {
    padding: 15px;
}

.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
}

.setting-group input[type="range"] {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    -webkit-appearance: none;
}

.setting-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.switch {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.switch input {
    display: none;
}

.slider {
    width: 40px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    position: relative;
    transition: all 0.3s;
}

.slider::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 2px;
    width: 16px;
    height: 16px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: all 0.3s;
}

.switch input:checked + .slider {
    background: var(--accent);
}

.switch input:checked + .slider::before {
    transform: translateX(20px);
    background: white;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--accent), var(--accent-alt));
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--accent-alt), var(--accent));
}

/* 响应式适配 */

/* 大屏幕适配 (1400px以上) */
@media (min-width: 1400px) {
    .cyber-header {
        padding: 20px 35px;
    }
    
    .header-left .cyber-title {
        font-size: 32px;
    }
    
    .cyber-subtitle {
        font-size: 14px;
    }
    
    .cyber-stats {
        gap: 25px;
        font-size: 16px;
    }
    
    .stat-item {
        padding: 8px 15px;
    }
    
    .shelf-panel {
        width: 400px;
    }
    
    .panel-header {
        padding: 20px;
    }
    
    .search-box {
        padding: 12px 16px;
        margin-bottom: 20px;
    }
    
    .search-box input {
        font-size: 16px;
    }
    
    .cyber-btn {
        padding: 10px 20px;
        font-size: 16px;
    }
    
    .cyber-btn.small {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .view-btn {
        width: 38px;
        height: 38px;
    }
    
    .books-container {
        padding: 20px;
        grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
        gap: 20px;
    }
    
    .book-card {
        padding: 20px;
    }
    
    .book-title {
        font-size: 16px;
    }
    
    .book-author {
        font-size: 13px;
    }
    
    .book-meta {
        font-size: 12px;
    }
    
    .reader-header {
        padding: 20px 35px;
    }
    
    .reader-title h2 {
        font-size: 24px;
    }
    
    .reader-content {
        padding: 30px;
    }
    
    .content-controls {
        margin-bottom: 25px;
        padding-bottom: 20px;
    }
    
    .ctrl-btn {
        width: 38px;
        height: 38px;
    }
    
    .font-size-label {
        font-size: 16px;
        min-width: 50px;
    }
    
    .text-display {
        padding: 35px;
        font-size: 18px;
    }
    
    .empty-state i {
        font-size: 64px;
    }
    
    .navigation {
        gap: 25px;
    }
    
    .nav-btn {
        padding: 10px 20px;
        font-size: 16px;
    }
    
    .page-info {
        font-size: 14px;
    }
    
    .side-panel {
        width: 350px;
        right: -400px;
    }
    
    .side-header {
        padding: 20px;
    }
    
    .side-header h3 {
        font-size: 18px;
    }
    
    .side-content {
        padding: 20px;
    }
    
    .setting-group label {
        font-size: 16px;
    }
}

/* 中等屏幕适配 (1200px - 1400px) */
@media (max-width: 1400px) and (min-width: 1201px) {
    .shelf-panel {
        width: 380px;
    }
    
    .books-container {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}

/* 平板横屏适配 (992px - 1200px) */
@media (max-width: 1200px) {
    .cyber-header {
        padding: 12px 20px;
    }
    
    .header-left .cyber-title {
        font-size: 22px;
    }
    
    .cyber-stats {
        gap: 15px;
        font-size: 13px;
    }
    
    .shelf-panel {
        width: 320px;
    }
    
    .panel-header {
        padding: 12px;
    }
    
    .search-box {
        padding: 6px 10px;
        margin-bottom: 12px;
    }
    
    .cyber-btn {
        padding: 7px 14px;
        font-size: 13px;
    }
    
    .books-container {
        padding: 12px;
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 12px;
    }
    
    .book-card {
        padding: 12px;
    }
    
    .book-title {
        font-size: 13px;
    }
    
    .reader-header {
        padding: 12px 20px;
    }
    
    .reader-title h2 {
        font-size: 18px;
    }
    
    .reader-content {
        padding: 15px;
    }
    
    .text-display {
        padding: 20px;
        font-size: 15px;
    }
}

/* 平板竖屏适配 (768px - 992px) */
@media (max-width: 992px) {
    .cyber-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 12px 15px;
    }
    
    .cyber-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .main-content {
        flex-direction: column;
    }
    
    .shelf-panel {
        width: 100%;
        height: 35vh;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    
    .books-container {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
        gap: 10px;
    }
    
    .reader-panel.active {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1000;
    }
    
    .content-controls {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .font-controls, .mode-controls {
        gap: 8px;
    }
    
    .side-panel {
        width: 280px;
        right: -300px;
    }
}

/* 手机横屏适配 (600px - 768px) */
@media (max-width: 768px) {
    .cyber-header {
        padding: 10px 12px;
        gap: 10px;
    }
    
    .header-left .cyber-title {
        font-size: 20px;
    }
    
    .cyber-subtitle {
        font-size: 11px;
    }
    
    .cyber-stats {
        gap: 10px;
        font-size: 12px;
    }
    
    .stat-item {
        padding: 4px 8px;
    }
    
    .shelf-panel {
        height: 40vh;
    }
    
    .panel-header {
        padding: 10px;
    }
    
    .search-box {
        padding: 6px 10px;
    }
    
    .search-box input {
        font-size: 13px;
    }
    
    .view-controls {
        gap: 4px;
    }
    
    .view-btn {
        width: 28px;
        height: 28px;
    }
    
    .books-container {
        padding: 10px;
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 8px;
    }
    
    .book-card {
        padding: 10px;
    }
    
    .book-title {
        font-size: 12px;
    }
    
    .book-author {
        font-size: 10px;
    }
    
    .book-meta {
        font-size: 9px;
    }
    
    .reader-header {
        padding: 10px 15px;
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .reader-title h2 {
        font-size: 16px;
    }
    
    .reader-content {
        padding: 12px;
    }
    
    .content-controls {
        margin-bottom: 15px;
        padding-bottom: 12px;
    }
    
    .ctrl-btn {
        width: 28px;
        height: 28px;
    }
    
    .font-size-label {
        font-size: 12px;
        min-width: 35px;
    }
    
    .text-display {
        padding: 15px;
        font-size: 14px;
        line-height: 1.6;
    }
    
    .empty-state i {
        font-size: 36px;
    }
    
    .navigation {
        gap: 12px;
    }
    
    .nav-btn {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .page-info {
        font-size: 11px;
    }
    
    .side-panel {
        width: 260px;
        right: -280px;
    }
    
    .side-header {
        padding: 12px;
    }
    
    .side-header h3 {
        font-size: 14px;
    }
    
    .side-content {
        padding: 12px;
    }
}

/* 手机竖屏适配 (480px - 600px) */
@media (max-width: 600px) {
    .cyber-header {
        padding: 8px 10px;
    }
    
    .header-left .cyber-title {
        font-size: 18px;
        gap: 8px;
    }
    
    .cyber-stats {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .stat-item {
        flex: 1;
        min-width: 80px;
        justify-content: center;
    }
    
    .shelf-panel {
        height: 45vh;
    }
    
    .panel-header {
        padding: 8px;
    }
    
    .cyber-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .cyber-btn.small {
        padding: 5px 8px;
        font-size: 11px;
    }
    
    .books-container {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 6px;
        padding: 8px;
    }
    
    .book-card {
        padding: 8px;
    }
    
    .book-card::before {
        width: 2px;
    }
    
    .book-title {
        font-size: 11px;
        margin-bottom: 3px;
    }
    
    .book-author {
        font-size: 9px;
        margin-bottom: 6px;
    }
    
    .reader-content {
        padding: 10px;
    }
    
    .content-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .text-display {
        padding: 12px;
        font-size: 13px;
    }
    
    .navigation {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .nav-btn {
        flex: 1;
        min-width: 100px;
        justify-content: center;
    }
    
    .progress-info {
        width: 100%;
        order: -1;
    }
    
    .side-panel {
        width: 100%;
        right: -110%;
    }
    
    .side-panel.active {
        right: 0;
    }
}

/* 小屏手机适配 (480px以下) */
@media (max-width: 480px) {
    .cyber-header {
        padding: 6px 8px;
        gap: 8px;
    }
    
    .header-left .cyber-title {
        font-size: 16px;
        gap: 6px;
    }
    
    .cyber-subtitle {
        font-size: 10px;
    }
    
    .cyber-stats {
        gap: 6px;
        font-size: 11px;
    }
    
    .stat-item {
        padding: 3px 6px;
        gap: 3px;
    }
    
    .shelf-panel {
        height: 50vh;
    }
    
    .panel-header {
        padding: 6px;
    }
    
    .search-box {
        padding: 5px 8px;
        margin-bottom: 8px;
    }
    
    .search-box i {
        margin-right: 6px;
        font-size: 12px;
    }
    
    .search-box input {
        font-size: 12px;
    }
    
    .cyber-btn {
        padding: 5px 10px;
        font-size: 11px;
        gap: 4px;
    }
    
    .cyber-btn.small {
        padding: 4px 6px;
        font-size: 10px;
    }
    
    .view-btn {
        width: 26px;
        height: 26px;
    }
    
    .books-container {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
        gap: 5px;
        padding: 6px;
    }
    
    .book-card {
        padding: 6px;
        border-radius: 6px;
    }
    
    .book-card:hover {
        transform: translateY(-2px);
    }
    
    .book-title {
        font-size: 10px;
    }
    
    .book-author {
        font-size: 8px;
        margin-bottom: 4px;
    }
    
    .book-meta {
        font-size: 8px;
    }
    
    .reader-header {
        padding: 8px 10px;
    }
    
    .reader-title h2 {
        font-size: 14px;
    }
    
    .reader-content {
        padding: 8px;
    }
    
    .content-controls {
        margin-bottom: 10px;
        padding-bottom: 8px;
        gap: 8px;
    }
    
    .font-controls, .mode-controls {
        gap: 6px;
    }
    
    .ctrl-btn {
        width: 26px;
        height: 26px;
    }
    
    .font-size-label {
        font-size: 11px;
        min-width: 30px;
    }
    
    .text-display {
        padding: 10px;
        font-size: 12px;
        line-height: 1.5;
    }
    
    .empty-state i {
        font-size: 32px;
        margin-bottom: 10px;
    }
    
    .empty-state {
        font-size: 12px;
    }
    
    .reader-footer {
        margin-top: 10px;
    }
    
    .navigation {
        gap: 6px;
    }
    
    .nav-btn {
        padding: 5px 10px;
        font-size: 11px;
        gap: 4px;
    }
    
    .progress-bar {
        height: 3px;
    }
    
    .page-info {
        font-size: 10px;
    }
    
    .side-header {
        padding: 10px;
    }
    
    .side-header h3 {
        font-size: 13px;
    }
    
    .close-panel {
        font-size: 14px;
    }
    
    .side-content {
        padding: 10px;
    }
    
    .setting-group {
        margin-bottom: 15px;
    }
    
    .setting-group label {
        font-size: 12px;
        margin-bottom: 6px;
    }
    
    .switch {
        gap: 8px;
    }
    
    .slider {
        width: 36px;
        height: 18px;
    }
    
    .slider::before {
        width: 14px;
        height: 14px;
        left: 2px;
        top: 2px;
    }
    
    .switch input:checked + .slider::before {
        transform: translateX(18px);
    }
    
    ::-webkit-scrollbar {
        width: 4px;
    }
}