@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

/* =========================================
   全局变量 (明亮模式 - 默认)
========================================= */
:root {
    --bg-color: #f4f6f8;
    --bg-image: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-blur: blur(15px);
    --glass-border: rgba(255, 255, 255, 0.5);
    --text-main: #2c3e50;
    --text-muted: #606c76;
    --link-color: #3498db;
    --link-hover: #2980b9;
    --tag-bg: rgba(232, 244, 253, 0.8);
    --code-bg: rgba(248, 249, 250, 0.92);
    --date-bg: rgba(248, 249, 250, 0.8);
}

/* =========================================
   全局变量 (暗黑模式)
========================================= */
[data-theme="dark"] {
    --bg-color: #121212;
    --bg-image: linear-gradient(135deg, #2b1055 0%, #7597de 100%);
    --card-bg: rgba(30, 30, 30, 0.7);
    --card-blur: blur(15px);
    --glass-border: rgba(255, 255, 255, 0.05);
    --text-main: #e0e0e0;
    --text-muted: #aaaaaa;
    --link-color: #64b5f6;
    --link-hover: #90caf9;
    --tag-bg: rgba(45, 55, 72, 0.8);
    --code-bg: rgba(30, 41, 59, 0.9);
    --date-bg: rgba(45, 45, 45, 0.8);
}

/* 基础设置与背景适配 */
body {
    font-family: 'Roboto', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-color);
    background-image: var(--bg-image);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    transition: background-color 0.4s ease, background-image 0.4s ease, color 0.4s ease;
}

a { color: var(--link-color); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--link-hover); }

.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* =========================================
   头部导航栏 & 主题切换按钮 (毛玻璃特效)
========================================= */
.site-header {
    padding: 15px 0 10px;
    background: var(--card-bg);
    backdrop-filter: var(--card-blur);
    -webkit-backdrop-filter: var(--card-blur);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
    transition: background-color 0.4s, border-color 0.4s;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; position: relative; }

.site-name { text-align: left; flex-shrink: 0; }
.site-name #logo { font-size: 24px; font-weight: 700; color: var(--text-main); }
.site-name .description { color: var(--text-muted); font-size: 12px; margin-top: 4px; }

.site-nav { margin-top: 0; flex-grow: 1; display: flex; justify-content: center; }
.site-nav a { margin: 0 15px; color: var(--text-muted); font-weight: 500; }
.site-nav a:hover { color: var(--link-color); }
.site-nav a.current { color: var(--link-color); font-weight: 700; }

.site-action { flex-shrink: 0; min-width: 60px; display: flex; justify-content: flex-end; }
.theme-toggle { background: transparent; border: none; font-size: 20px; cursor: pointer; padding: 5px; opacity: 0.7; transition: opacity 0.2s; outline: none; }
.theme-toggle:hover { opacity: 1; }
.theme-toggle .icon-moon { font-size: 16px; vertical-align: middle; }
.theme-toggle .icon-sun { vertical-align: middle; }

:root:not([data-theme="dark"]) .icon-moon { display: inline; }
:root:not([data-theme="dark"]) .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: inline; }

/* =========================================
   文章卡片 (毛玻璃特效)
========================================= */
.post-card {
    background: var(--card-bg);
    backdrop-filter: var(--card-blur);
    -webkit-backdrop-filter: var(--card-blur);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 20px 30px;
    margin-bottom: 20px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.4s;
}
.post-card:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1); }

.post-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 10px; }
.post-title { margin: 0; font-size: 20px; line-height: 1.4; }
.post-title a { color: var(--text-main); }
.post-date-right { flex-shrink: 0; font-size: 14px; font-weight: 600; color: var(--text-muted); background: var(--date-bg); padding: 2px 8px; border-radius: 6px; margin-top: 2px; transition: background-color 0.3s; }

.post-meta { list-style: none; padding: 0; margin: 0; display: flex; align-items: center; flex-wrap: wrap; gap: 15px; font-size: 13px; color: var(--text-muted); }
.post-tags:empty { display: none; }
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.post-tags a { background-color: var(--tag-bg); color: var(--link-color); padding: 2px 10px; border-radius: 4px; font-size: 12px; transition: all 0.2s ease; }
.post-tags a:hover { background-color: var(--link-color); color: #fff; }

.post-content .post-title { font-size: 28px; margin-bottom: 15px; }
.post-body h2, .post-body h3 { margin-top: 30px; }
.post-body img { max-width: 100%; height: auto; border-radius: 6px; display: block; margin: 20px auto; }

/* =========================================
   置顶徽章
========================================= */
.sticky-badge { display: inline-block; background-color: #ff4757; color: #ffffff; font-size: 12px; font-weight: 500; padding: 2px 8px; border-radius: 4px; margin-right: 8px; vertical-align: middle; position: relative; top: -2px; box-shadow: 0 2px 4px rgba(255, 71, 87, 0.3); }
[data-theme="dark"] .sticky-badge { background-color: #ff6b81; box-shadow: 0 2px 4px rgba(255, 107, 129, 0.2); }

/* =========================================
   提示框 (Alert Boxes)
========================================= */
.post-body .alert { padding: 15px 20px; margin: 20px 0; border-radius: 6px; font-size: 14px; line-height: 1.6; border-left: 4px solid transparent; }
.post-body .alert p { margin: 0; }
.post-body .alert-info { background-color: rgba(225, 245, 254, 0.8); border-left-color: #03a9f4; color: #01579b; }
.post-body .alert-success { background-color: rgba(232, 245, 233, 0.8); border-left-color: #4caf50; color: #1b5e20; }
.post-body .alert-warning { background-color: rgba(255, 243, 224, 0.8); border-left-color: #ff9800; color: #e65100; }
.post-body .alert-danger { background-color: rgba(255, 235, 238, 0.8); border-left-color: #f44336; color: #b71c1c; }

[data-theme="dark"] .post-body .alert-info { background-color: rgba(3, 169, 244, 0.1); color: #81d4fa; }
[data-theme="dark"] .post-body .alert-success { background-color: rgba(76, 175, 80, 0.1); color: #a5d6a7; }
[data-theme="dark"] .post-body .alert-warning { background-color: rgba(255, 152, 0, 0.1); color: #ffcc80; }
[data-theme="dark"] .post-body .alert-danger { background-color: rgba(244, 67, 54, 0.1); color: #ef9a9a; }

/* =========================================
   文章正文排版优化 (文字、段落与列表间距)
========================================= */
/* 1. 优化常规段落 */
.post-content p {
    margin-bottom: 1.6em; /* 拉开段落与段落之间的距离 */
    line-height: 1.8;     /* 稍微调大行高，让上下两行文字不拥挤 */
}

/* 2. 优化列表间距 (针对使用 - 或 1. 写的列表) */
.post-content ul, 
.post-content ol {
    padding-left: 2em;    /* 列表整体向右缩进，显得更规整 */
    margin-bottom: 1.6em; /* 列表和后面的内容拉开距离 */
}

.post-content li {
    margin-bottom: 0.8em; /* 🌟核心：拉开每一个列表项 (也就是每一行 - 代码) 之间的距离 */
    line-height: 1.8;     /* 列表内的多行文字也保持宽松行高 */
}

/* 防止多层嵌套的列表出现多余空白 */
.post-content li ul,
.post-content li ol {
    margin-bottom: 0;
    margin-top: 0.8em;
}

/* =========================================
   分页码 (毛玻璃特效)
========================================= */
.page-navigator { list-style: none; padding: 0; margin: 10px auto 40px; display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
.page-navigator li { display: inline-block; }
.page-navigator li a, .page-navigator li span {
    display: inline-block; padding: 6px 14px;
    background: var(--card-bg);
    backdrop-filter: var(--card-blur);
    -webkit-backdrop-filter: var(--card-blur);
    border: 1px solid var(--glass-border);
    border-radius: 6px; color: var(--text-muted); font-size: 14px; box-shadow: 0 2px 10px rgba(0,0,0,0.03); transition: all 0.2s ease;
}
.page-navigator li a:hover { background: var(--link-color); color: #fff; border-color: var(--link-color); }
.page-navigator li.current a { background: var(--link-color); color: #fff; font-weight: bold; border-color: var(--link-color); box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3); }

/* =========================================
   热门标签 (TAG) (毛玻璃特效)
========================================= */
.home-tags {
    margin: 0 auto 40px;
    background: var(--card-bg);
    backdrop-filter: var(--card-blur);
    -webkit-backdrop-filter: var(--card-blur);
    border: 1px solid var(--glass-border);
    padding: 25px 30px; border-radius: 12px; box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05); text-align: center; transition: background-color 0.4s;
}
.home-tags-title { font-size: 14px; color: var(--text-muted); margin: 0 0 15px 0; letter-spacing: 1px; }
.tags-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.tag-item { background: rgba(0,0,0,0.03); border: 1px solid var(--glass-border); color: var(--text-main); padding: 5px 12px; border-radius: 20px; font-size: 13px; transition: all 0.2s ease; }
[data-theme="dark"] .tag-item { background: rgba(255,255,255,0.05); }
.tag-item:hover { background: var(--link-color); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 8px rgba(52, 152, 219, 0.2); border-color: var(--link-color); }

/* =========================================
   代码块（浅灰高级版｜已优化不闪屏）
========================================= */
.post-content .chatgpt-code-block {
    margin: 1.5em 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e5e7eb;
    background: #f7f7f7;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}

.post-content .chatgpt-code-toolbar {
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 14px;
    background: #f1f3f5;
    border-bottom: 1px solid #e5e7eb;
}

.post-content .chatgpt-code-language {
    color: #666666;
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    text-transform: none;
    letter-spacing: 0.02em;
}

.post-content .chatgpt-copy-btn {
    appearance: none;
    border: 0;
    background: transparent;
    color: #666666;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    transition: color 0.2s ease, opacity 0.2s ease;
}

.post-content .chatgpt-copy-btn:hover { color: #111111; }
.post-content .chatgpt-copy-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.post-content .chatgpt-copy-btn.copied { color: #16a34a; }

.post-content .chatgpt-code-block pre {
    background: #f7f7f7 !important;
    color: #2d2d2d !important;
    margin: 0 !important;
    padding: 16px !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    overflow: auto;
}

.post-content .chatgpt-code-block pre,
.post-content .chatgpt-code-block pre code {
    font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace !important;
    font-size: 14px !important;
    line-height: 1.65 !important;
    text-shadow: none !important;
    white-space: pre !important;
}

.post-content .chatgpt-code-block pre code {
    display: block;
    color: #2d2d2d !important;
    background: transparent !important;
    padding: 0 !important;
}

/* 防止首屏闪深色 */
.post-content pre,
.post-content pre code,
.post-content code[class*="language-"],
.post-content pre[class*="language-"] {
    background: #f7f7f7 !important;
}

.post-content .chatgpt-code-block pre::-webkit-scrollbar {
    height: 10px;
    width: 10px;
}
.post-content .chatgpt-code-block pre::-webkit-scrollbar-track { background: #f0f0f0; }
.post-content .chatgpt-code-block pre::-webkit-scrollbar-thumb {
    background: #d0d7de;
    border-radius: 999px;
    border: 2px solid #f7f7f7;
}

/* 行内代码 */
.post-content :not(pre) > code {
    display: inline-block;
    vertical-align: baseline;
    font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
    font-size: 0.9em;
    line-height: 1.5;
    color: #c7254e;
    background: #f1f3f5;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    padding: 0.12em 0.45em;
    margin: 0 0.12em;
    word-break: break-word;
}

[data-theme="dark"] .post-content :not(pre) > code {
    color: #ffb4c1;
    background: rgba(110, 118, 129, 0.22);
    border-color: rgba(110, 118, 129, 0.35);
}

/* Prism 语法高亮：浅色方案 */
.post-content code[class*="language-"],
.post-content pre[class*="language-"] {
    color: #2d2d2d !important;
    background: transparent !important;
}

.post-content .token.comment,
.post-content .token.prolog,
.post-content .token.doctype,
.post-content .token.cdata { color: #6a737d; }

.post-content .token.punctuation { color: #24292f; }
.post-content .token.property,
.post-content .token.tag,
.post-content .token.boolean,
.post-content .token.number,
.post-content .token.constant,
.post-content .token.symbol,
.post-content .token.deleted { color: #005cc5; }

.post-content .token.selector,
.post-content .token.attr-name,
.post-content .token.string,
.post-content .token.char,
.post-content .token.builtin,
.post-content .token.inserted { color: #032f62; }

.post-content .token.operator,
.post-content .token.entity,
.post-content .token.url,
.post-content .language-css .token.string,
.post-content .style .token.string { color: #d73a49; }

.post-content .token.atrule,
.post-content .token.attr-value,
.post-content .token.keyword { color: #d73a49; }

.post-content .token.function,
.post-content .token.class-name { color: #6f42c1; }

.post-content .token.regex,
.post-content .token.important,
.post-content .token.variable { color: #e36209; }

.post-content .token.important,
.post-content .token.bold { font-weight: 700; }
.post-content .token.italic { font-style: italic; }

.post-content .token.entity { cursor: help; }

/* 暗黑模式下代码块维持深色 */
[data-theme="dark"] .post-content .chatgpt-code-block {
    border-color: rgba(255, 255, 255, 0.08);
    background: #0f172a;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
}

[data-theme="dark"] .post-content .chatgpt-code-toolbar {
    background: #111827;
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .post-content .chatgpt-code-language,
[data-theme="dark"] .post-content .chatgpt-copy-btn {
    color: #9ca3af;
}

[data-theme="dark"] .post-content .chatgpt-copy-btn:hover {
    color: #f3f4f6;
}

[data-theme="dark"] .post-content .chatgpt-code-block pre {
    background: #0f172a !important;
    color: #e5e7eb !important;
}

[data-theme="dark"] .post-content .chatgpt-code-block pre code,
[data-theme="dark"] .post-content code[class*="language-"],
[data-theme="dark"] .post-content pre[class*="language-"] {
    color: #e5e7eb !important;
    background: transparent !important;
}

[data-theme="dark"] .post-content pre,
[data-theme="dark"] .post-content pre code {
    background: #0f172a !important;
}

[data-theme="dark"] .post-content .chatgpt-code-block pre::-webkit-scrollbar-track { background: #111827; }
[data-theme="dark"] .post-content .chatgpt-code-block pre::-webkit-scrollbar-thumb {
    background: #374151;
    border-color: #111827;
}

[data-theme="dark"] .post-content .token.comment,
[data-theme="dark"] .post-content .token.prolog,
[data-theme="dark"] .post-content .token.doctype,
[data-theme="dark"] .post-content .token.cdata { color: #94a3b8; }

[data-theme="dark"] .post-content .token.punctuation { color: #cbd5e1; }
[data-theme="dark"] .post-content .token.property,
[data-theme="dark"] .post-content .token.tag,
[data-theme="dark"] .post-content .token.boolean,
[data-theme="dark"] .post-content .token.number,
[data-theme="dark"] .post-content .token.constant,
[data-theme="dark"] .post-content .token.symbol,
[data-theme="dark"] .post-content .token.deleted { color: #93c5fd; }

[data-theme="dark"] .post-content .token.selector,
[data-theme="dark"] .post-content .token.attr-name,
[data-theme="dark"] .post-content .token.string,
[data-theme="dark"] .post-content .token.char,
[data-theme="dark"] .post-content .token.builtin,
[data-theme="dark"] .post-content .token.inserted { color: #86efac; }

[data-theme="dark"] .post-content .token.operator,
[data-theme="dark"] .post-content .token.entity,
[data-theme="dark"] .post-content .token.url,
[data-theme="dark"] .post-content .language-css .token.string,
[data-theme="dark"] .post-content .style .token.string,
[data-theme="dark"] .post-content .token.atrule,
[data-theme="dark"] .post-content .token.attr-value,
[data-theme="dark"] .post-content .token.keyword { color: #fda4af; }

[data-theme="dark"] .post-content .token.function,
[data-theme="dark"] .post-content .token.class-name { color: #c4b5fd; }

[data-theme="dark"] .post-content .token.regex,
[data-theme="dark"] .post-content .token.important,
[data-theme="dark"] .post-content .token.variable { color: #fdba74; }

/* =========================================
   公共底部
========================================= */
.site-footer { text-align: center; padding: 40px 0; color: var(--text-main); opacity: 0.6; font-size: 13px; }

/* =========================================
   移动端响应式适配
========================================= */
@media (max-width: 768px) {
    .site-header .container { flex-direction: column; justify-content: center; }
    .site-name { text-align: center; }
    .site-nav { margin-top: 15px; }
    .site-header { padding: 20px 0; }
    .site-action { position: absolute; top: 18px; right: 20px; }
    .post-card { padding: 15px 20px; }
    .post-header { flex-direction: column; gap: 5px; margin-bottom: 12px; }
    .post-date-right { margin-top: 0; background: none; padding: 0; font-size: 13px; }
    .post-title { font-size: 18px; }
    .post-content .post-title { font-size: 24px; }
    .post-meta { flex-wrap: wrap; gap: 10px; }
    .post-content .chatgpt-code-block { border-radius: 12px; }
    .post-content .chatgpt-code-toolbar { padding: 0 12px; }
    .post-content .chatgpt-code-block pre { padding: 14px !important; }
}

/* =========================================
   媒体播放器 (Audio & Video)
========================================= */
.post-audio {
    width: 100%;
    margin: 20px 0;
    border-radius: 50px;
    background: var(--card-bg);
    backdrop-filter: var(--card-blur);
    -webkit-backdrop-filter: var(--card-blur);
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    outline: none;
    transition: background-color 0.4s;
}

[data-theme="dark"] .post-audio::-webkit-media-controls-enclosure {
    background: rgba(255, 255, 255, 0.05);
}
[data-theme="dark"] .post-audio::-webkit-media-controls-panel {
    filter: invert(1) hue-rotate(180deg);
}

/* =========================================
   图片暗黑模式适配
========================================= */
img {
    transition: filter 0.4s ease;
}

[data-theme="dark"] img {
    filter: brightness(0.9);
}

/* 2. 视频播放器 (DPlayer 容器美化) */
.dplayer-custom-container {
    width: 100%;
    aspect-ratio: 16 / 9;
    margin: 25px 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--glass-border);
    background: #000;
    z-index: 1;
}

.dplayer-theme-default .dplayer-video-wrap { border-radius: 12px 12px 0 0; }