/**
 * 专业阅读器样式
 * 支持多种主题、阅读模式和自定义设置
 */

/* ==================== 阅读器变量 ==================== */
:root {
    /* 主题颜色 */
    --reader-bg: #0a0a0a;
    --reader-text: #e8e8e8;
    --reader-text-secondary: #a0a0a0;
    --reader-accent: #8b0000;
    --reader-border: #2a2a2a;
    
    /* 字体设置 */
    --reader-font-size: 18px;
    --reader-line-height: 1.8;
    --reader-paragraph-spacing: 1.5em;
    --reader-font-family: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', serif;
    
    /* 布局 */
    --reader-max-width: 800px;
    --reader-padding: 2rem;
}

/* ==================== 阅读器容器 ==================== */
.reader-page {
    min-height: 100vh;
    background: var(--reader-bg);
    color: var(--reader-text);
    font-family: var(--reader-font-family);
    font-size: var(--reader-font-size);
    line-height: var(--reader-line-height);
    transition: all var(--transition-normal);
}

/* ==================== 阅读器头部 ==================== */
.reader-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: rgba(var(--reader-bg), 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--reader-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    z-index: 100;
    transition: transform 0.3s ease;
}

.reader-header.hidden {
    transform: translateY(-100%);
}

.reader-header-left,
.reader-header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.reader-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: var(--reader-text-secondary);
    transition: all 0.2s ease;
}

.reader-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--reader-text);
}

.reader-title {
    font-size: 0.9rem;
    font-weight: 500;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ==================== 阅读器主体 ==================== */
.reader-container {
    max-width: var(--reader-max-width);
    margin: 0 auto;
    padding: 80px var(--reader-padding) 100px;
    transition: all var(--transition-normal);
}

/* 窄屏 */
.reader-container.width-narrow {
    --reader-max-width: 600px;
}

/* 宽屏 */
.reader-container.width-wide {
    --reader-max-width: 1000px;
}

/* ==================== 故事标题区域 ==================== */
.reader-story-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--reader-border);
}

.reader-story-category {
    font-size: 0.85rem;
    color: var(--reader-accent);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.reader-story-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.reader-story-meta {
    font-size: 0.85rem;
    color: var(--reader-text-secondary);
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.reader-story-meta span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* ==================== 故事内容 ==================== */
.reader-content {
    text-align: justify;
}

.reader-content p {
    margin-bottom: var(--reader-paragraph-spacing);
    text-indent: 2em;
}

.reader-content p:first-of-type::first-letter {
    font-size: 3em;
    float: left;
    line-height: 1;
    margin-right: 0.1em;
    margin-top: -0.1em;
    color: var(--reader-accent);
    font-weight: 600;
}

.reader-content h2,
.reader-content h3 {
    margin: 2em 0 1em;
    font-weight: 600;
    color: var(--reader-text);
}

.reader-content h2 {
    font-size: 1.5em;
}

.reader-content h3 {
    font-size: 1.25em;
}

.reader-content blockquote {
    margin: 1.5em 0;
    padding: 1em 1.5em;
    border-left: 3px solid var(--reader-accent);
    background: rgba(139, 0, 0, 0.05);
    font-style: italic;
}

.reader-content blockquote p {
    text-indent: 0;
    margin-bottom: 0;
}

.reader-content hr {
    border: none;
    height: 1px;
    background: var(--reader-border);
    margin: 2em 0;
}

/* 左对齐模式 */
.reader-container.align-left .reader-content {
    text-align: left;
}

.reader-container.align-left .reader-content p {
    text-indent: 0;
}

/* ==================== 翻页模式 ==================== */
.reader-page.mode-page .reader-container {
    height: calc(100vh - 130px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.reader-page.mode-page .reader-content {
    flex: 1;
    column-width: 100%;
    column-gap: 0;
    height: 100%;
}

.reader-page-navigation {
    position: fixed;
    bottom: 60px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(var(--reader-bg), 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--reader-border);
    z-index: 90;
}

.page-nav-btn {
    padding: 0.5rem 1rem;
    background: var(--reader-border);
    border-radius: 6px;
    color: var(--reader-text);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.page-nav-btn:hover {
    background: var(--reader-accent);
}

.page-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-indicator {
    font-size: 0.9rem;
    color: var(--reader-text-secondary);
    min-width: 80px;
    text-align: center;
}

/* 翻页点击区域 */
.page-click-area {
    position: fixed;
    top: 50px;
    bottom: 60px;
    width: 30%;
    z-index: 50;
    cursor: pointer;
}

.page-click-area.prev {
    left: 0;
}

.page-click-area.next {
    right: 0;
}

/* ==================== 沉浸模式 ==================== */
.reader-page.mode-immersive .reader-header,
.reader-page.mode-immersive .reader-toolbar,
.reader-page.mode-immersive .reader-page-navigation {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.reader-page.mode-immersive:hover .reader-header,
.reader-page.mode-immersive:hover .reader-toolbar,
.reader-page.mode-immersive:hover .reader-page-navigation {
    opacity: 1;
    pointer-events: auto;
}

.reader-page.mode-immersive .reader-container {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

/* 沉浸模式提示 */
.immersive-hint {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 1rem 2rem;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 8px;
    color: var(--reader-text-secondary);
    font-size: 0.9rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 200;
}

.reader-page.mode-immersive .immersive-hint {
    opacity: 1;
    animation: fadeOut 3s forwards;
    animation-delay: 2s;
}

@keyframes fadeOut {
    to {
        opacity: 0;
    }
}

/* ==================== 阅读器工具栏 ==================== */
.reader-toolbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: rgba(var(--reader-bg), 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--reader-border);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0 1rem;
    z-index: 100;
    transition: transform 0.3s ease;
}

.reader-toolbar.hidden {
    transform: translateY(100%);
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--reader-border);
    margin: 0 0.5rem;
}

/* ==================== 设置面板 ==================== */
.settings-panel {
    position: fixed;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    width: 90%;
    max-width: 500px;
    background: var(--reader-bg);
    border: 1px solid var(--reader-border);
    border-radius: 12px 12px 0 0;
    padding: 1.5rem;
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
}

.settings-panel.active {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.settings-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.settings-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    color: var(--reader-text-secondary);
}

.settings-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--reader-text);
}

.settings-section {
    margin-bottom: 1.5rem;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-label {
    font-size: 0.85rem;
    color: var(--reader-text-secondary);
    margin-bottom: 0.75rem;
    display: block;
}

/* 主题选择 */
.theme-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.theme-option {
    padding: 0.75rem;
    border-radius: 8px;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.theme-option:hover {
    border-color: var(--reader-text-secondary);
}

.theme-option.active {
    border-color: var(--reader-accent);
}

.theme-preview {
    width: 100%;
    height: 40px;
    border-radius: 4px;
    margin-bottom: 0.5rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.theme-name {
    font-size: 0.75rem;
    color: var(--reader-text-secondary);
}

/* 各主题预览 */
.theme-dark .theme-preview {
    background: #0a0a0a;
}

.theme-light .theme-preview {
    background: #f5f5f5;
}

.theme-sepia .theme-preview {
    background: #f4ecd8;
}

.theme-midnight .theme-preview {
    background: #1a1f2e;
}

/* 字体大小滑块 */
.font-size-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.font-size-slider {
    flex: 1;
    -webkit-appearance: none;
    height: 4px;
    background: var(--reader-border);
    border-radius: 2px;
    outline: none;
}

.font-size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--reader-accent);
    border-radius: 50%;
    cursor: pointer;
}

.font-size-value {
    font-size: 0.9rem;
    min-width: 40px;
    text-align: right;
    color: var(--reader-text-secondary);
}

/* 字体选择 */
.font-family-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.font-family-option {
    padding: 0.75rem;
    border: 1px solid var(--reader-border);
    border-radius: 6px;
    text-align: center;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.font-family-option:hover {
    border-color: var(--reader-text-secondary);
}

.font-family-option.active {
    border-color: var(--reader-accent);
    background: rgba(139, 0, 0, 0.1);
}

.font-family-option.serif {
    font-family: 'Noto Serif SC', serif;
}

.font-family-option.sans {
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}

.font-family-option.mono {
    font-family: 'SF Mono', monospace;
}

/* 行高和间距 */
.range-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.range-slider {
    flex: 1;
    -webkit-appearance: none;
    height: 4px;
    background: var(--reader-border);
    border-radius: 2px;
    outline: none;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--reader-accent);
    border-radius: 50%;
    cursor: pointer;
}

.range-value {
    font-size: 0.9rem;
    min-width: 50px;
    text-align: right;
    color: var(--reader-text-secondary);
}

/* 布局选项 */
.layout-options {
    display: flex;
    gap: 0.5rem;
}

.layout-option {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--reader-border);
    border-radius: 6px;
    text-align: center;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.layout-option:hover {
    border-color: var(--reader-text-secondary);
}

.layout-option.active {
    border-color: var(--reader-accent);
    background: rgba(139, 0, 0, 0.1);
}

/* ==================== 各主题样式 ==================== */

/* 明亮模式 */
.reader-page.theme-light {
    --reader-bg: #f5f5f5;
    --reader-text: #333333;
    --reader-text-secondary: #666666;
    --reader-border: #dddddd;
}

/* 护眼模式 */
.reader-page.theme-sepia {
    --reader-bg: #f4ecd8;
    --reader-text: #5b4636;
    --reader-text-secondary: #8b7355;
    --reader-border: #d4c5a9;
    --reader-accent: #8b4513;
}

/* 午夜蓝模式 */
.reader-page.theme-midnight {
    --reader-bg: #1a1f2e;
    --reader-text: #c9d1d9;
    --reader-text-secondary: #8b949e;
    --reader-border: #30363d;
    --reader-accent: #58a6ff;
}

/* ==================== 进度条 ==================== */
.reading-progress {
    position: fixed;
    top: 50px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--reader-border);
    z-index: 95;
}

.reading-progress-bar {
    height: 100%;
    background: var(--reader-accent);
    width: 0%;
    transition: width 0.1s ease;
}

/* ==================== 目录面板 ==================== */
.toc-panel {
    position: fixed;
    top: 50px;
    left: 0;
    width: 300px;
    height: calc(100vh - 50px);
    background: var(--reader-bg);
    border-right: 1px solid var(--reader-border);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 110;
    overflow-y: auto;
}

.toc-panel.active {
    transform: translateX(0);
}

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

.toc-title {
    font-size: 1rem;
    font-weight: 600;
}

.toc-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    color: var(--reader-text-secondary);
}

.toc-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--reader-text);
}

.toc-list {
    padding: 1rem;
}

.toc-item {
    padding: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.toc-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.toc-item.active {
    background: rgba(139, 0, 0, 0.1);
    color: var(--reader-accent);
}

.toc-overlay {
    position: fixed;
    top: 50px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 105;
}

.toc-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ==================== VIP锁定区域 ==================== */
.vip-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.6rem;
    background: linear-gradient(135deg, #ffd700 0%, #ffaa00 100%);
    color: #000;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    margin-left: 0.5rem;
    vertical-align: middle;
}

.vip-lock-section {
    margin: 3rem 0;
    padding: 3rem 1.5rem;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(255, 170, 0, 0.02) 100%);
    border: 2px dashed rgba(255, 215, 0, 0.3);
    border-radius: 12px;
    text-align: center;
}

.vip-lock-overlay {
    max-width: 400px;
    margin: 0 auto;
}

.vip-lock-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: #ffd700;
}

.vip-lock-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--reader-text);
}

.vip-lock-desc {
    font-size: 1rem;
    color: var(--reader-text-secondary);
    margin-bottom: 1.5rem;
}

.vip-lock-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #ffd700 0%, #ffaa00 100%);
    color: #000;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.vip-lock-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
    color: #000;
}

/* ==================== 响应式优化 ==================== */
@media (max-width: 768px) {
    :root {
        --reader-padding: 1rem;
        --reader-font-size: 17px;
        --reader-line-height: 1.9;
    }
    
    .reader-container {
        padding: 70px var(--reader-padding) 80px;
    }
    
    .reader-header {
        height: 50px;
        padding: 0 0.75rem;
    }
    
    .reader-btn {
        width: 40px;
        height: 40px;
    }
    
    .reader-title {
        max-width: 150px;
        font-size: 0.85rem;
    }
    
    .reader-story-header {
        margin-bottom: 2rem;
        padding-bottom: 1.5rem;
    }
    
    .reader-story-title {
        font-size: 1.6rem;
        line-height: 1.4;
    }
    
    .reader-story-category {
        font-size: 0.8rem;
    }
    
    .reader-story-meta {
        gap: 1rem;
        font-size: 0.8rem;
    }
    
    .reader-content p {
        text-indent: 1.5em;
        margin-bottom: 1.2em;
    }
    
    .reader-content p:first-of-type::first-letter {
        font-size: 2.5em;
    }
    
    .reader-toolbar {
        height: 55px;
        padding: 0 0.5rem;
        gap: 0.25rem;
    }
    
    .reader-btn[data-mode] {
        padding: 0.5rem;
    }
    
    .reader-btn svg {
        width: 22px;
        height: 22px;
    }
    
    .toolbar-divider {
        margin: 0 0.25rem;
    }
    
    .settings-panel {
        width: 100%;
        max-width: none;
        left: 0;
        transform: translateY(100%);
        border-radius: 16px 16px 0 0;
        padding: 1.25rem;
        max-height: 70vh;
        overflow-y: auto;
    }
    
    .settings-panel.active {
        transform: translateY(0);
    }
    
    .theme-options {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .theme-option {
        padding: 0.5rem;
    }
    
    .theme-preview {
        height: 35px;
    }
    
    .font-family-options {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .font-family-option {
        padding: 0.6rem 0.4rem;
        font-size: 0.85rem;
    }
    
    .toc-panel {
        width: 85%;
        max-width: 320px;
    }
    
    .vip-lock-section {
        padding: 2rem 1rem;
        margin: 2rem 0;
    }
    
    .vip-lock-icon {
        width: 48px;
        height: 48px;
    }
    
    .vip-lock-title {
        font-size: 1.25rem;
    }
    
    .vip-lock-desc {
        font-size: 0.9rem;
    }
    
    .vip-lock-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .vip-badge {
        font-size: 0.7rem;
        padding: 0.2rem 0.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --reader-padding: 0.875rem;
        --reader-font-size: 16px;
    }
    
    .reader-container {
        padding: 65px var(--reader-padding) 75px;
    }
    
    .reader-header {
        height: 45px;
    }
    
    .reader-btn {
        width: 36px;
        height: 36px;
    }
    
    .reader-title {
        display: none;
    }
    
    .reader-story-title {
        font-size: 1.4rem;
    }
    
    .reader-story-meta {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.75rem;
    }
    
    .reader-content p {
        text-indent: 1.2em;
    }
    
    .reader-content p:first-of-type::first-letter {
        font-size: 2em;
    }
    
    .reader-toolbar {
        height: 50px;
    }
    
    .settings-section {
        margin-bottom: 1.25rem;
    }
    
    .font-size-control {
        gap: 0.75rem;
    }
    
    .range-control {
        gap: 0.75rem;
    }
    
    .layout-options {
        flex-wrap: wrap;
    }
    
    .layout-option {
        flex: 1;
        min-width: 80px;
        padding: 0.6rem;
        font-size: 0.8rem;
    }
    
    .vip-lock-title {
        font-size: 1.1rem;
    }
    
    .vip-lock-desc {
        font-size: 0.85rem;
    }
    
    .vip-lock-btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }
}

/* 横屏手机优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .reader-header {
        height: 40px;
    }
    
    .reader-container {
        padding-top: 55px;
        padding-bottom: 60px;
    }
    
    .reader-toolbar {
        height: 45px;
    }
    
    .settings-panel {
        max-height: 80vh;
    }
}

/* 小屏幕手机优化 */
@media (max-width: 360px) {
    :root {
        --reader-font-size: 15px;
    }
    
    .reader-story-title {
        font-size: 1.25rem;
    }
    
    .reader-story-meta span {
        font-size: 0.75rem;
    }
}