/* 基础重置与默认（亮色）主题变量 */
:root {
    --primary-color: #3182ce;
    --text-color: #2d3748;
    --text-muted: #718096;
    --bg-color: #f0f4f8;
    --card-bg: rgba(255, 255, 255, 0.75);
    --card-hover-bg: rgba(255, 255, 255, 0.88);
    --header-bg: rgba(255, 255, 255, 0.65);
    --border-color: rgba(226, 232, 240, 0.8);
    --border-hover: rgba(203, 213, 224, 0.9);
    --code-bg: rgba(237, 242, 247, 0.8);
    --code-text: #2d3748;
    --pre-bg: #2d3748;
    --pre-text: #ffffff;
    --max-width: 760px;
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --backdrop-blur: blur(12px) saturate(180%);
    
    /* 标题跑马灯边框渐变线 (亮色：清新天青色系) */
    --marquee-border-gradient: conic-gradient(from 0deg, transparent 0%, #00f2fe 25%, #4facfe 50%, #00d2ff 75%, transparent 100%);
}

[data-theme="dark"] {
    --primary-color: #63b3ed;
    --text-color: #e2e8f0;
    --text-muted: #a0aec0;
    --bg-color: #121824;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-hover-bg: rgba(45, 55, 72, 0.85);
    --header-bg: rgba(18, 24, 38, 0.65);
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --code-bg: rgba(74, 85, 104, 0.6);
    --code-text: #e2e8f0;
    --pre-bg: #0f172a;
    --pre-text: #e2e8f0;
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --backdrop-blur: blur(12px) saturate(180%);
    
    /* 标题跑马灯边框渐变线 (暗黑：荧光天青霓虹色) */
    --marquee-border-gradient: conic-gradient(from 0deg, transparent 0%, #00e5ff 25%, #00b0ff 50%, #0dceda 75%, transparent 100%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 10% 10%, rgba(99, 179, 237, 0.12) 0px, transparent 50%),
        radial-gradient(at 90% 90%, rgba(154, 109, 255, 0.12) 0px, transparent 50%);
    background-attachment: fixed;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------------- 头部与导航栏 ---------------- */
.site-header {
    background: var(--header-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--glass-shadow);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ---------------- 跑马灯外层容器（仅作为 2px 天青色边框） ---------------- */
.marquee-border-box {
    position: relative;
    display: inline-flex;
    padding: 2px; /* 边框厚度 */
    border-radius: 8px;
    background: rgba(226, 232, 240, 0.3);
    overflow: hidden;
    isolation: isolate; /* 强制独立渲染层，防止透色 */
}

/* 天青色跑马灯流光 */
.marquee-border-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--marquee-border-gradient);
    animation: sweepCyanGlow 3.5s linear infinite;
    z-index: 0;
}

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

.marquee-glass-inner {
    padding: 0;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-radius: 0;
    display: flex;
    align-items: center;
    width: 100%;
}

/* 站点标题：背景色设为 #f59e0bc7，搭配毛玻璃效果 */
.site-title {
    position: relative;
    z-index: 2; /* 确保层级高于跑马灯 */
    margin: 0;
    font-size: 0.95rem !important;
    font-weight: 700;
    line-height: 1.2;
    padding: 5px 14px;
    background-color: #f59e0bc7 !important; 
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: 6px;
    color: #000000 !important;
    font-family: "Microsoft YaHei", "微软雅黑", "Microsoft YaHei UI", "PingFang SC", sans-serif !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.site-title a,
.site-title a:visited {
    color: #000000 !important;
    text-decoration: none;
    font-size: inherit !important;
    font-family: inherit !important;
    transition: opacity 0.3s ease;
}

.site-title a:hover {
    opacity: 0.75;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 16px;
}

.site-nav a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.95rem;
    line-height: 1.2;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.site-nav a:hover {
    opacity: 0.8;
}

.theme-toggle-btn {
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    align-self: center;
    transition: transform 0.2s ease;
}

.theme-toggle-btn:hover {
    transform: scale(1.15);
}

/* ---------------- 主体区域与毛玻璃卡片 ---------------- */
.main-content {
    flex: 1;
    padding: 28px 20px;
}

/* 文章列表：紧凑型无圆角设计，行无间隙，舒适淡雅鼠标互动 */
.posts-list {
    list-style: none;
    margin-top: 8px;
    border-radius: 0;
    overflow: hidden;
    background: var(--card-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--border-color);
}

.post-item {
    background: transparent;
    margin-bottom: 0;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.25s ease, padding-left 0.25s ease;
    position: relative;
}

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

.post-item::before {
    display: none;
}

.post-item:hover {
    background-color: var(--card-hover-bg);
    transform: none;
    box-shadow: none;
}

.post-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--text-color);
    transition: padding-left 0.25s ease;
}

.post-item:hover .post-link {
    padding-left: 22px;
}

.post-title-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.post-title {
    font-family: "Microsoft YaHei", "微软雅黑", "Microsoft YaHei UI", "PingFang SC", sans-serif !important;
    font-size: 0.95rem !important;
    font-weight: 600 !important;
    transition: color 0.25s ease;
}

.post-arrow {
    font-size: 0.95rem;
    color: var(--primary-color);
    opacity: 0;
    transform: translateX(6px);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: inline-block;
}

.post-item:hover .post-title {
    color: var(--primary-color);
}

.post-item:hover .post-arrow {
    opacity: 1;
    transform: translateX(-2px);
}

.post-date {
    font-family: "Microsoft YaHei", "微软雅黑", "Microsoft YaHei UI", "PingFang SC", sans-serif !important;
    font-size: 0.95rem !important;
    color: var(--text-muted);
    margin-left: 12px;
    white-space: nowrap;
}

/* 文章详情页 */
.post-detail {
    background: var(--card-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    box-shadow: var(--glass-shadow);
    padding: 36px 32px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.post-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-color);
}

.post-detail-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.35;
    margin-bottom: 8px;
}

.post-detail-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* 正文与排版 */
.post-content p {
    font-family: "Source Serif Pro", "Source Serif 4", "Source Serif", "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "Songti SC", "SimSun", serif;
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.25em;
    letter-spacing: 0.02em;
    word-break: break-word;
}

.post-content ul,
.post-content ol {
    margin-top: 0.5em;
    margin-bottom: 1.25em;
    padding-left: 1.5em;
}

.post-content li {
    margin-bottom: 0.3em;
    line-height: 1.7;
}

.post-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 16px;
    color: var(--text-muted);
    margin: 1.2em 0;
    font-style: normal;
}

.post-content blockquote p {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 0.98rem;
    line-height: 1.6;
    margin-bottom: 0.5em;
}

.post-content blockquote p:last-child {
    margin-bottom: 0;
}

.post-content h2, .post-content h3, .post-content h4 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin-top: 1.6em;
    margin-bottom: 0.6em;
    color: var(--text-color);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 16px 0;
    display: block;
}

.post-content code {
    background-color: var(--code-bg);
    color: var(--code-text);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 0.875em;
}

.post-content pre {
    background-color: var(--pre-bg);
    color: var(--pre-text);
    padding: 14px 18px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 1.2em;
}

.post-content pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}

/* 页脚 */
.site-footer {
    background: var(--header-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-top: 1px solid var(--border-color);
    padding: 18px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: auto;
    box-shadow: var(--glass-shadow);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.site-footer p {
    margin: 0;
    line-height: 1.5;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}
/* ---------------- 响应式流媒体视频播放器容器（自适应大窗口） ---------------- */
.video-container {
    position: relative;
    width: 100%;
    max-width: 100%;
    min-height: 420px; /* 确保默认有足够高度，避免窗口过小 */
    aspect-ratio: 16 / 9;
    margin: 24px 0;
    border-radius: 10px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.08);
    box-shadow: var(--glass-shadow);
}

.video-container iframe,
.video-container video,
.video-container object,
.video-container embed {
    width: 100%;
    height: 100%;
    border: 0;
    border-radius: 10px;
    display: block;
}


/* ---------------- 代码块自动换行与复制按钮样式 ---------------- */
.post-content pre {
    position: relative;
    white-space: pre-wrap !important;
    word-break: break-all !important;
    overflow-x: auto;
}

.post-content pre code {
    white-space: pre-wrap !important;
    word-break: break-all !important;
    display: block;
}

.copy-code-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--pre-text, #ffffff);
    padding: 3px 8px;
    font-size: 0.75rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.2s ease;
    z-index: 10;
}

.copy-code-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .copy-code-btn {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: #e2e8f0;
}

[data-theme="dark"] .copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}


/* ---------------- Markdown 表格美化样式 ---------------- */
.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.95rem;
    line-height: 1.6;
    background: var(--card-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--border-color);
}

.post-content th,
.post-content td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.post-content th {
    background-color: rgba(49, 130, 206, 0.1);
    color: var(--primary-color);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

[data-theme="dark"] .post-content th {
    background-color: rgba(99, 179, 237, 0.15);
}

.post-content tr:last-child td {
    border-bottom: none;
}

.post-content tbody tr {
    transition: background-color 0.2s ease;
}

.post-content tbody tr:hover {
    background-color: var(--card-hover-bg);
}

/* ---------------- 代码块语言标签、自动换行与复制按钮优化样式 ---------------- */
.post-content pre {
    position: relative;
    padding: 38px 18px 14px 18px !important;
    white-space: pre-wrap !important;
    word-break: break-all !important;
    overflow-x: auto;
    background-color: var(--pre-bg);
    color: var(--pre-text);
    border-radius: 8px;
    margin-bottom: 1.2em;
}

.post-content pre code {
    background-color: transparent !important;
    padding: 0 !important;
    color: inherit;
    white-space: pre-wrap !important;
    word-break: break-all !important;
    display: block;
}

.code-lang-label {
    position: absolute;
    top: 8px;
    left: 14px;
    font-size: 0.75rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--pre-text, #ffffff);
    opacity: 0.65;
    pointer-events: none;
    z-index: 10;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

[data-theme="dark"] .code-lang-label {
    color: #a0aec0;
}

.copy-code-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--pre-text, #ffffff);
    padding: 3px 8px;
    font-size: 0.75rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.2s ease;
    z-index: 10;
}

.copy-code-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .copy-code-btn {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: #e2e8f0;
}

[data-theme="dark"] .copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* ---------------- 分页导航样式 ---------------- */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding: 12px 16px;
    background: var(--card-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-color);
    box-shadow: var(--glass-shadow);
    border-radius: 8px;
}

.pagination-btn {
    padding: 6px 14px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--primary-color);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.pagination-btn:hover:not(.disabled) {
    background-color: var(--card-hover-bg);
    border-color: var(--primary-color);
}

.pagination-btn.disabled {
    color: var(--text-muted);
    opacity: 0.5;
    cursor: not-allowed;
    border-color: var(--border-color);
}

.page-info {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}