/* 字体 - 更文艺清新的选择 */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;1,400&family=Lora:ital,wght@0,400;0,500;1,400&family=Inter:wght@400;500&display=swap');

/* 极简主义样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 浅色主题 */
    --text-primary: #000;
    --text-secondary: #666;
    --text-light: #999;
    --background: #fff;
    --surface: #fafafa;
    --border: #e5e5e5;
    --border-light: #f0f0f0;
    --max-width: 1200px;
    --header-font: 'Playfair Display', 'Georgia', serif;
    --body-font: 'Lora', 'Georgia', serif;
    --ui-font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition-speed: 0.3s;
    --sticky-background: rgba(255, 255, 255, 0.95);
}

/* 暗色主题 */
[data-theme="dark"] {
    --text-primary: #e5e5e5;
    --text-secondary: #a0a0a0;
    --text-light: #707070;
    --background: #1a1a1a;
    --surface: #2a2a2a;
    --border: #404040;
    --border-light: #333;
    --sticky-background: rgba(26, 26, 26, 0.95);
}

body {
    font-family: var(--body-font);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* 头部导航 - 三段式布局设计 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--background);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 2rem;
}

/* 左侧：Logo */
.header-left {
    display: flex;
    align-items: center;
}

.logo h1 {
    font-family: var(--header-font);
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: opacity var(--transition-speed);
    font-style: italic;
    white-space: nowrap;
}

.logo h1:hover {
    opacity: 0.7;
}

/* 中间：主导航 */
.header-center {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.header-center .nav-link {
    font-family: var(--ui-font);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    transition: color var(--transition-speed);
    outline: none;
    white-space: nowrap;
}

.header-center .nav-link:focus {
    outline: none;
}

.header-center .nav-link:hover,
.header-center .nav-link.active {
    color: var(--text-primary);
}

/* 右侧：操作按钮 */
.header-right {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.75rem;
}

.search-btn,
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover,
.theme-toggle:hover {
    color: var(--text-primary);
    background-color: var(--surface);
}

/* 搜索模态框 */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 8rem;
}

.search-content {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: 100%;
    max-width: 600px;
    margin: 0 1rem;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
}

.search-header {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
    padding: 1.5rem 1.5rem 1rem;
}

.search-input {
    flex: 1;
    padding: 0;
    border: none;
    background: transparent;
    font-family: var(--header-font);
    font-size: 1.3rem;
    color: var(--text-primary);
    outline: none;
    box-shadow: none;
}

.search-input::placeholder {
    color: var(--text-light);
    font-style: italic;
}

.search-input:focus {
    outline: none;
    box-shadow: none;
    border: none;
}

.search-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all var(--transition-speed);
    margin-left: 1rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.search-close:hover {
    color: var(--text-primary);
    background-color: var(--border-light);
}

.search-filters {
    display: flex;
    gap: 1rem;
    margin: 0 1.5rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-light);
}

.search-filter {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-family: var(--ui-font);
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color var(--transition-speed);
    user-select: none;
}

.search-filter input[type="checkbox"] {
    display: none;
}

.filter-text {
    position: relative;
    transition: all var(--transition-speed);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    background-color: var(--background);
}

.search-filter input[type="checkbox"]:checked + .filter-text {
    color: var(--text-primary);
    background-color: var(--surface);
    border-color: var(--text-primary);
}

.search-filter input[type="checkbox"]:not(:checked) + .filter-text {
    color: var(--text-light);
    text-decoration: line-through;
    opacity: 0.6;
    border-color: var(--border-light);
}

.search-filter:hover .filter-text {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.search-results {
    max-height: 300px;
    overflow-y: auto;
}

.search-results:not(:empty) {
    border-top: 1px solid var(--border);
}

.search-section {
    font-family: var(--ui-font);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 1rem 0.5rem;
    border-bottom: 1px solid var(--border-light);
    margin-top: 0.5rem;
}

.search-section:first-child {
    margin-top: 0;
}

.search-result-item {
    padding: 1rem;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.search-result-item:hover {
    background-color: var(--border-light);
}

.search-result-title {
    font-family: var(--header-font);
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.search-result-date {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* 主要内容区域 */
.main-content {
    margin-top: 60px;
    min-height: calc(100vh - 60px);
}

.content-wrapper {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1rem 4rem;
}

/* 页面内容 */
.page-content {
    display: block;
}

.page-content.hidden {
    display: none;
}

/* Posts 页面样式 */
.posts-header {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--background);
    z-index: 10;
    padding: 3rem 1rem;
    margin: 0;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.posts-controls {
    display: flex;
    gap: 0.4rem;
    justify-content: center;
}

.posts-controls {
    display: flex;
    gap: 0.4rem;
}

.sort-btn {
    font-family: var(--ui-font);
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    cursor: pointer;
    font-size: 1rem;
    transition: color var(--transition-speed);
    outline: none;
}

.sort-btn:focus {
    outline: none;
    box-shadow: none;
}

.sort-btn:hover {
    color: var(--text-primary);
}

.sort-btn.active {
    color: var(--text-primary);
}

.posts-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 120px;
}

.post-item {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.post-item:last-child {
    border-bottom: none;
}

.post-item:hover {
    opacity: 0.8;
}

.post-item-date {
    font-family: var(--header-font);
    font-size: 0.9rem;
    color: var(--text-light);
    white-space: nowrap;
    min-width: 80px;
}

.post-item-title {
    font-family: var(--header-font);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    text-align: center;
    line-height: 1.4;
}

.post-item-category {
    font-family: var(--ui-font);
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 80px;
    text-align: right;
}


/* 分类视图 */
.category-section {
    margin-bottom: 2rem;
}

.category-section:first-child {
    margin-top: 3rem;
}

.category-header {
    cursor: pointer;
    transition: opacity var(--transition-speed);
}

.category-header:hover {
    opacity: 0.8;
}

.category-title {
    font-family: var(--header-font);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-arrow {
    font-size: 0.8rem;
    transition: transform var(--transition-speed);
}

.category-count {
    font-size: 0.85rem;
    color: var(--text-light);
    font-family: var(--ui-font);
}

.category-content {
    margin-top: 1rem;
    padding-left: 1.5rem;
}

/* Works 页面样式 */
.works-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 1rem 0;
}

.work-item {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 比例 */
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    background: var(--surface);
    border: 1px solid var(--border);
}

.work-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.work-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
    color: white;
    padding: 2rem 1.5rem 1.5rem;
    opacity: 1;
}

.work-title {
    font-family: var(--header-font);
    font-weight: 500;
    font-size: 1.2rem;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.work-description {
    font-family: var(--body-font);
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0.9;
}

/* 页面标题样式 */
.content-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-top: 2rem;
}

.page-title {
    font-family: var(--header-font);
    font-size: 2rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.page-subtitle {
    font-family: var(--body-font);
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 书影音页面样式 */
.media-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.media-section {
    background: var(--surface);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border);
}

.media-section-title {
    font-family: var(--header-font);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.media-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.media-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    transition: background-color var(--transition-speed);
    cursor: pointer;
}

.media-item:hover {
    background-color: var(--border-light);
}

.media-icon {
    font-size: 1.5rem;
    min-width: 40px;
    text-align: center;
}

.media-info {
    flex: 1;
}

.media-title {
    font-family: var(--header-font);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.media-meta {
    font-family: var(--ui-font);
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.media-rating {
    color: #f59e0b;
    font-size: 0.9rem;
}

.media-review {
    font-family: var(--body-font);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 0.5rem;
}

/* 工具页面样式 */
.tools-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.tool-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all var(--transition-speed);
    cursor: pointer;
}

.tool-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.tool-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--border-light), var(--border));
}

.tool-info {
    flex: 1;
}

.tool-name {
    font-family: var(--header-font);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.tool-category {
    font-family: var(--ui-font);
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--background);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    display: inline-block;
}

.tool-description {
    font-family: var(--body-font);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 1rem;
}

.tool-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.tool-tag {
    font-family: var(--ui-font);
    font-size: 0.8rem;
    color: var(--text-light);
    background: var(--border-light);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

/* About 页面样式 */
.about-content {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    padding-top: 3rem;
}

.about-text {
    margin-bottom: 3rem;
}

.about-text h2 {
    font-family: var(--header-font);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-social h3 {
    font-family: var(--header-font);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-top: 4rem;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--header-font);
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: all var(--transition-speed);
}

.social-link:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background-color: var(--surface);
}

/* 文章详情页面 */
.article-detail {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--background);
    z-index: 200;
    overflow-y: auto;
    display: none;
    transition: background-color var(--transition-speed);
}

.back-button {
    position: fixed;
    top: 1.5rem;
    left: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    z-index: 201;
    padding: 0.5rem 1rem;
    font-family: var(--header-font);
    border-radius: 4px;
    transition: all var(--transition-speed);
}

.back-button:hover {
    color: var(--text-primary);
    background-color: var(--border-light);
}

.article-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 4rem 1rem 2rem;
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.article-title {
    font-family: var(--header-font);
    font-size: 2rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
}

.article-category {
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--header-font);
}

.article-time {
    color: var(--text-light);
    font-family: var(--header-font);
}

.article-body {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.article-image {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--border-light) 0%, var(--border) 100%);
    border-radius: 4px;
}

.article-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.article-text p {
    margin-bottom: 1.5rem;
}

.article-text p:last-child {
    margin-bottom: 0;
}

.article-source {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        grid-template-columns: 1fr auto;
        gap: 1rem;
        padding: 1rem;
    }

    .header-center {
        display: none; /* 在移动端可以添加汉堡菜单 */
    }

    .header-right {
        gap: 0.5rem;
    }

    .content-wrapper {
        padding: 1.5rem 1rem 2rem;
    }

    .post-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .post-item-date {
        margin-left: 0;
    }

    .works-grid {
        gap: 1rem;
    }

    .work-item {
        height: 240px;
    }

    .article-title {
        font-size: 1.5rem;
    }

    .article-content {
        padding: 3rem 1rem 1rem;
    }

    .back-button {
        top: 1rem;
        left: 1rem;
    }

    .social-links {
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0.75rem 1rem;
    }

    .logo h1 {
        font-size: 1rem;
    }
}

/* 页脚 */
.footer {
    border-top: 1px solid var(--border-light);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1rem;
    text-align: center;
}

.footer-content p {
    font-family: var(--ui-font);
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 0;
}

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

::-webkit-scrollbar-track {
    background-color: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-light);
}

/* 选择文本样式 */
::selection {
    background-color: var(--text-primary);
    color: var(--background);
}

/* 焦点样式 */
:focus {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

/* 无装饰链接样式 */
a {
    color: inherit;
    text-decoration: none;
}

/* 按钮重置 */
button {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: inherit;
    cursor: pointer;
}

/* 列表重置 */
ul, ol {
    list-style: none;
}

/* 图片默认样式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 隐藏元素工具类 */
.hidden {
    display: none !important;
}

/* 文本截断 */
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 过渡动画 */
.transition {
    transition: all var(--transition-speed);
}

/* 加载动画 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    color: var(--text-light);
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--text-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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