/* 极简现代博客样式 - 参考 miantiao.me */

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
}

/* 亮色主题 */
body[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-hover: #f4f4f5;
    --text-primary: #18181b;
    --text-secondary: #71717a;
    --text-tertiary: #a1a1aa;
    --border-color: #e4e4e7;
    --border-hover: #d4d4d8;
    --accent-color: #18181b;
    --header-bg: rgba(255, 255, 255, 0.8);
    --header-border: rgba(228, 228, 231, 0.5);
}

/* 暗黑主题 */
body[data-theme="dark"] {
    --bg-primary: #18181b;
    --bg-secondary: #27272a;
    --bg-hover: #3f3f46;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --border-color: #3f3f46;
    --border-hover: #52525b;
    --accent-color: #fafafa;
    --header-bg: rgba(24, 24, 27, 0.6);
    --header-border: rgba(63, 63, 70, 0.4);
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 顶部导航栏 */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--header-border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled {
    background: var(--header-bg);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1024px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: padding 0.3s ease;
}

.site-header.scrolled .header-content {
    padding: 0.75rem 1.5rem;
}

.site-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: all 0.2s ease;
}

.site-logo:hover {
    color: var(--text-secondary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.dropdown-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 150px;
    background: var(--bg-primary);
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.15s ease;
    border-bottom: none;
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

.dropdown-menu a:hover {
    background: var(--bg-hover);
    color: var(--accent-color);
    padding-left: 1.25rem;
}

/* 主题切换按钮 */
.theme-toggle {
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: rotate(15deg);
}

.theme-toggle svg {
    position: absolute;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 太阳图标 */
body[data-theme="light"] .sun-icon {
    opacity: 1;
    transform: rotate(0deg) translateY(0);
}

body[data-theme="light"] .moon-icon {
    opacity: 0;
    transform: rotate(180deg) translateY(40px);
}

/* 月亮图标 */
body[data-theme="dark"] .sun-icon {
    opacity: 0;
    transform: rotate(-180deg) translateY(-40px);
}

body[data-theme="dark"] .moon-icon {
    opacity: 1;
    transform: rotate(0deg) translateY(0);
}

/* 图标动画 */
.sun-icon.rising {
    animation: rising 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.moon-icon.rising {
    animation: rising 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.sun-icon.setting {
    animation: setting 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.moon-icon.setting {
    animation: setting 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes rising {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    50% {
        opacity: 1;
        transform: translateY(-5px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes setting {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    50% {
        opacity: 0.5;
        transform: translateY(-5px);
    }
    100% {
        opacity: 0;
        transform: translateY(40px);
    }
}

/* 主内容区 */
.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 6rem 1.5rem 4rem;
    min-height: calc(100vh - 200px);
}

/* 两栏布局 */
.main-layout {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.main-content {
    flex: 0 0 75%;
    min-width: 0;
}

.sidebar {
    flex: 0 0 calc(25% - 2rem);
    position: sticky;
    top: 6rem;
}

/* 页面标题 */
.page-heading {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 2rem;
    text-align: left;
    color: var(--text-primary);
}

/* 订阅卡片 */
.subscribe-card {
    background: var(--bg-primary);
    border: 2px dashed var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.subscribe-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-secondary);
}

.subscribe-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.subscribe-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.subscribe-description {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.subscribe-description strong {
    color: var(--text-primary);
    font-weight: 500;
}

.subscribe-url-box {
    margin-bottom: 1rem;
}

.subscribe-url-input {
    width: 100%;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.subscribe-url-input:focus {
    outline: none;
    border-color: var(--border-hover);
    background: var(--bg-hover);
}

.subscribe-button {
    width: 100%;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: var(--text-primary);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.subscribe-button:hover {
    background: var(--text-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.subscribe-button:active {
    transform: translateY(0);
}

/* 文章列表 */
.articles-container {
    margin-bottom: 4rem;
}

.year-section {
    margin-bottom: 3rem;
}

.year-label {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

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

.article-card {
    padding: 1.75rem;
    background: var(--bg-primary);
    border: 2px dashed var(--border-color);
    border-radius: 1rem;
    transition: all 0.2s ease;
}

.article-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.article-card-title {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.025em;
    margin: 0 0 0.5rem 0;
    padding: 0;
    border: none;
}

.article-card-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-card-title a:hover {
    color: var(--text-secondary);
}

.article-card-summary {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin: 0 0 0.5rem 0;
}

.article-card-date {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-tertiary);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin: 4rem 0 2rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
}

.page-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.page-link:hover {
    color: var(--accent-color);
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.page-info {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

/* 底部 */
.site-footer {
    max-width: 1024px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: -0.02em;
}

.footer-copyright {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 90;
}

.back-to-top:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    color: var(--accent-color);
    transform: translateY(0) scale(1);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* 响应式设计 */
/* 较大屏幕 (≥640px) - 参考 miantiao.me */
@media (min-width: 640px) {
    .page-heading {
        font-size: 1.875rem;
        margin-bottom: 2rem;
    }

    .article-card-title {
        font-size: 1.125rem;
        line-height: 1.25;
    }
}

/* 超大屏幕 (≥1024px) */
@media (min-width: 1024px) {
    .page-heading {
        font-size: 2.25rem;
        margin-bottom: 2rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0.875rem 1rem;
    }

    .site-header.scrolled .header-content {
        padding: 0.625rem 1rem;
    }

    .site-logo {
        font-size: 1.125rem;
    }

    .container {
        padding: 5rem 1rem 3rem;
        max-width: 100%;
    }

    /* 移动端改为单栏布局 */
    .main-layout {
        flex-direction: column;
    }

    .main-content {
        flex: 1;
        width: 100%;
        max-width: 100%;
    }

    .sidebar {
        flex: 1;
        position: static;
        width: 100%;
        margin-top: 2rem;
    }

    /* 修复文章卡片宽度问题 */
    .articles-container {
        width: 100%;
    }
    
    .article-cards {
        width: 100%;
    }
    
    .article-card {
        padding: 1.5rem;
        width: 100%;
        box-sizing: border-box;
    }
    
    .article-card-title {
        font-size: 1.125rem;
        line-height: 1.4;
    }

    .article-card-summary {
        font-size: 0.875rem;
    }

    .article-card-date {
        font-size: 0.75rem;
    }

    .pagination {
        gap: 1rem;
        flex-wrap: wrap;
    }

    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 40px;
        height: 40px;
    }

    .dropdown-menu {
        right: -0.5rem;
    }
}

@media (max-width: 480px) {
    .header-right {
        gap: 0.5rem;
    }

    .dropdown-toggle {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    .theme-toggle svg {
        width: 18px;
        height: 18px;
    }
    
    /* 在更小的手机上进一步优化 */
    .article-card {
        padding: 1.25rem;
    }
    
    .article-card-title {
        font-size: 1.1rem;
    }
}

/* 代码样式 */
code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    color: var(--text-primary);
    background: var(--bg-secondary);
    padding: 0.2em 0.4em;
    border-radius: 0.25rem;
    border: 1px solid var(--border-color);
}

pre {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    overflow-x: auto;
    line-height: 1.6;
}

pre code {
    background: transparent;
    padding: 0;
    border: none;
}

/* 链接样式 */
a {
    color: var(--text-primary);
    transition: color 0.2s ease;
}

a:hover {
    color: var(--text-secondary);
}

/* 选中文本样式 */
::selection {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}