/* ============================================================
   Skills · 技能库 — 主样式
   浅色/深色双主题,通过 html[data-theme] 切换
   ============================================================ */

:root,
html[data-theme="light"] {
    --bg: #f6f7fb;
    --bg-blob-1: rgba(99, 102, 241, 0.14);
    --bg-blob-2: rgba(236, 72, 153, 0.10);
    --bg-blob-3: rgba(16, 185, 129, 0.10);
    --card-bg: #ffffff;
    --card-border: #e5e7eb;
    --card-shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 4px 16px rgba(16, 24, 40, 0.05);
    --text: #1f2328;
    --text-secondary: #57606a;
    --text-tertiary: #8c959f;
    --accent: #6366f1;
    --accent-2: #ec4899;
    --accent-3: #10b981;
    --gradient: linear-gradient(120deg, var(--accent), var(--accent-2));
    --header-bg: rgba(246, 247, 251, 0.82);
    --markdown-bg: #ffffff;
    --code-bg: #f6f8fa;
    --code-border: #d0d7de;
    --blockquote-bg: #f6f8fa;
    --blockquote-border: #d0d7de;
    --link: #0969da;
    --hover-bg: #f6f8fa;
    --btn-primary: var(--gradient);
    --footer-bg: rgba(246, 247, 251, 0.6);
}

html[data-theme="dark"] {
    --bg: #0d1117;
    --bg-blob-1: rgba(99, 102, 241, 0.12);
    --bg-blob-2: rgba(236, 72, 153, 0.08);
    --bg-blob-3: rgba(16, 185, 129, 0.08);
    --card-bg: #161b22;
    --card-border: #30363d;
    --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.25);
    --text: #e6edf3;
    --text-secondary: #9198a1;
    --text-tertiary: #6e7681;
    --accent: #818cf8;
    --accent-2: #f472b6;
    --accent-3: #34d399;
    --gradient: linear-gradient(120deg, var(--accent), var(--accent-2));
    --header-bg: rgba(13, 17, 23, 0.82);
    --markdown-bg: #0d1117;
    --code-bg: #161b22;
    --code-border: #30363d;
    --blockquote-bg: #161b22;
    --blockquote-border: #30363d;
    --link: #58a6ff;
    --hover-bg: #1f2630;
    --footer-bg: rgba(13, 17, 23, 0.6);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ============ 背景光晕 ============ */
.bg-blobs {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    animation: blob-float 18s ease-in-out infinite alternate;
}
.blob-1 { width: 520px; height: 520px; background: var(--bg-blob-1); top: -140px; left: -120px; }
.blob-2 { width: 460px; height: 460px; background: var(--bg-blob-2); top: 30%; right: -160px; animation-delay: -6s; }
.blob-3 { width: 420px; height: 420px; background: var(--bg-blob-3); bottom: -140px; left: 30%; animation-delay: -12s; }
@keyframes blob-float {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(40px, 30px) scale(1.12); }
}

/* ============ 顶部导航 ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--card-border);
}
.header-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
    height: 62px;
    display: flex;
    align-items: center;
    gap: 20px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 900;
    letter-spacing: 0.5px;
}
.logo-mark {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: var(--gradient);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}
.site-nav { display: flex; gap: 4px; }
.site-nav a {
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}
.site-nav a:hover { color: var(--text); background: var(--hover-bg); }
.site-nav a.active { color: #fff; background: var(--gradient); box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3); }

.search-box { margin-left: auto; }
.search-box input {
    width: 200px;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text);
    font-size: 13px;
    outline: none;
    transition: all 0.25s ease;
}
.search-box input:focus {
    width: 260px;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.theme-toggle {
    width: 36px;
    height: 36px;
    border: 1px solid var(--card-border);
    border-radius: 50%;
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all 0.25s ease;
}
.theme-toggle:hover { transform: rotate(20deg); border-color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }
.icon-sun { display: none; }
.icon-moon { display: block; }
html[data-theme="dark"] .icon-sun { display: block; }
html[data-theme="dark"] .icon-moon { display: none; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    width: 22px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ============ 主体 ============ */
.site-main { max-width: 1160px; margin: 0 auto; padding: 0 24px 60px; }

/* ============ Hero ============ */
.hero { padding: 72px 0 40px; text-align: center; }
.hero-eyebrow {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 18px;
    padding: 6px 16px;
    border: 1px solid var(--card-border);
    border-radius: 999px;
    background: var(--card-bg);
}
.hero-title {
    font-size: clamp(30px, 5vw, 52px);
    font-weight: 900;
    line-height: 1.25;
    max-width: 720px;
    margin: 0 auto 16px;
}
.hero-title em {
    font-style: italic;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    max-width: 640px;
    margin: 0 auto 36px;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}
.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    padding: 20px 34px;
    min-width: 140px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(16, 24, 40, 0.12); }
.stat-num {
    font-size: 36px;
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
}
.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* ============ 页面小 Hero(分类/详情) ============ */
.page-hero { padding: 48px 0 28px; }
.page-hero-inner { max-width: 900px; }
.page-title {
    font-size: clamp(26px, 4vw, 40px);
    font-weight: 900;
    line-height: 1.3;
    margin: 8px 0 10px;
    word-break: break-all;
}
.page-subtitle { color: var(--text-secondary); font-size: 15px; max-width: 720px; }
.page-meta { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--text-tertiary); margin-top: 6px; }
.page-hero .hero-eyebrow a:hover, .page-hero .hero-eyebrow .sep { color: var(--text-secondary); }
.page-hero .hero-eyebrow a { color: var(--text); }

/* ============ 技能区块 ============ */
.skills-section { padding-top: 24px; }
.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.section-title { font-size: 22px; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.section-count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--hover-bg);
    border: 1px solid var(--card-border);
    padding: 2px 10px;
    border-radius: 999px;
}
.source-tabs { display: flex; gap: 8px; }
.tab {
    padding: 7px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}
.tab:hover { color: var(--text); border-color: var(--accent); }
.tab.active { color: #fff; background: var(--gradient); border-color: transparent; box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3); }

.category-block { margin-bottom: 44px; }
.category-head {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--card-border);
}
.category-name { font-size: 20px; font-weight: 800; }
.category-name a:hover { color: var(--accent); }
.category-count { font-size: 13px; color: var(--text-tertiary); font-family: 'JetBrains Mono', monospace; }

.skill-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 18px;
}
.skill-card {
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    animation: card-in 0.4s ease both;
}
.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 14px 32px rgba(99, 102, 241, 0.16);
}
@keyframes card-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
.skill-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.skill-badge {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 999px;
    font-weight: 600;
}
.skill-badge.local { background: rgba(16, 185, 129, 0.12); color: var(--accent-3); }
.skill-badge.official { background: rgba(99, 102, 241, 0.12); color: var(--accent); }
.skill-badge.community { background: rgba(245, 158, 11, 0.12); color: var(--accent-4, #f59e0b); }
.skill-files { font-size: 12px; color: var(--text-tertiary); font-family: 'JetBrains Mono', monospace; }
.skill-name {
    font-size: 17px;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 8px;
    word-break: break-all;
}
.skill-desc {
    font-size: 13.5px;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.skill-card-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 14px;
    font-size: 12px;
    color: var(--text-tertiary);
}
.skill-arrow { transition: transform 0.25s ease; color: var(--accent); font-size: 16px; }
.skill-card:hover .skill-arrow { transform: translateX(4px); }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    background: var(--card-bg);
    border: 1px dashed var(--card-border);
    border-radius: 14px;
}

/* ============ 分页 ============ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 36px;
}
.page-link {
    padding: 8px 18px;
    border: 1px solid var(--card-border);
    border-radius: 999px;
    background: var(--card-bg);
    font-size: 14px;
    transition: all 0.2s ease;
}
.page-link:hover { border-color: var(--accent); color: var(--accent); }
.page-current { font-size: 14px; color: var(--text-secondary); font-family: 'JetBrains Mono', monospace; }

/* ============ 详情页 ============ */
.detail-hero { text-align: left; }
.detail-actions { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(99, 102, 241, 0.4); }
.btn-ghost { background: var(--card-bg); border: 1px solid var(--card-border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.detail-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 20px; font-size: 13px; color: var(--text-secondary); }
.meta-item a { color: var(--link); }
.meta-item a:hover { text-decoration: underline; }

.detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 28px;
    margin-top: 16px;
    align-items: start;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tag-pill {
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--hover-bg);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
}

/* Markdown 正文(GitHub 风格) */
.markdown-body {
    background: var(--markdown-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    box-shadow: var(--card-shadow);
    padding: 32px 40px;
    font-size: 15px;
    word-wrap: break-word;
}
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 { font-weight: 800; line-height: 1.35; margin: 1.6em 0 0.6em; padding-bottom: 0.3em; }
.markdown-body h1 { font-size: 1.7em; border-bottom: 1px solid var(--card-border); }
.markdown-body h2 { font-size: 1.4em; border-bottom: 1px solid var(--card-border); }
.markdown-body h3 { font-size: 1.2em; }
.markdown-body h4 { font-size: 1.05em; }
.markdown-body h1:first-child, .markdown-body h2:first-child { margin-top: 0; }
.markdown-body p { margin: 0.9em 0; }
.markdown-body a { color: var(--link); }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body ul, .markdown-body ol { margin: 0.9em 0; padding-left: 1.8em; }
.markdown-body li { margin: 0.35em 0; }
.markdown-body li > ul, .markdown-body li > ol { margin: 0.2em 0; }
.markdown-body blockquote {
    margin: 0.9em 0;
    padding: 0.6em 1em;
    border-left: 4px solid var(--blockquote-border);
    background: var(--blockquote-bg);
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
}
.markdown-body code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88em;
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 5px;
    padding: 0.15em 0.4em;
}
.markdown-body pre {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    line-height: 1.6;
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 10px;
    padding: 16px 18px;
    overflow-x: auto;
    margin: 1em 0;
    position: relative;
}
.markdown-body .code-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 6px;
    border: 1px solid var(--code-border);
    background: var(--card-bg);
    color: var(--text-secondary);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease, color 0.2s ease;
    font-family: 'Noto Sans SC', sans-serif;
}
.markdown-body pre:hover .code-copy { opacity: 1; }
.markdown-body .code-copy:hover { color: var(--accent); border-color: var(--accent); }
.markdown-body pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: inherit;
}
.markdown-body table {
    border-collapse: collapse;
    margin: 1em 0;
    width: 100%;
    display: block;
    overflow-x: auto;
}
.markdown-body th, .markdown-body td {
    border: 1px solid var(--card-border);
    padding: 8px 14px;
    font-size: 14px;
}
.markdown-body th { background: var(--hover-bg); font-weight: 600; }
.markdown-body img { max-width: 100%; border-radius: 8px; }
.markdown-body hr { border: none; border-top: 1px solid var(--card-border); margin: 1.6em 0; }

/* 侧栏 */
.detail-side { display: flex; flex-direction: column; gap: 18px; position: sticky; top: 82px; }
.side-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    box-shadow: var(--card-shadow);
    padding: 18px 20px;
}
.side-card h4 { font-size: 14px; font-weight: 700; margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; }
.side-count { font-size: 12px; color: var(--text-tertiary); font-family: 'JetBrains Mono', monospace; }
.deps-block {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 8px;
    padding: 12px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text-secondary);
}
.file-tree { list-style: none; max-height: 320px; overflow-y: auto; }
.file-tree li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    padding: 4px 0;
    border-bottom: 1px dashed var(--card-border);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.file-tree li:last-child { border-bottom: none; }
.related-list { list-style: none; }
.related-list li { padding: 6px 0; border-bottom: 1px dashed var(--card-border); font-size: 13.5px; }
.related-list li:last-child { border-bottom: none; }
.related-list a { color: var(--text-secondary); transition: color 0.2s ease; }
.related-list a:hover { color: var(--accent); }

/* ============ 错误页 ============ */
.error-page { text-align: center; padding: 100px 20px; }
.error-code {
    font-size: 90px;
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 16px;
}
.error-page p { color: var(--text-secondary); margin-bottom: 24px; }

/* ============ 页脚 ============ */
.site-footer {
    border-top: 1px solid var(--card-border);
    background: var(--footer-bg);
    padding: 28px 0;
}
.footer-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
}
.footer-inner a:hover { color: var(--accent); }
.footer-sep { margin: 0 6px; }
.footer-right { display: flex; gap: 18px; }

/* ============ 返回顶部 ============ */
.back-to-top {
    position: fixed;
    right: 26px;
    bottom: 26px;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    display: grid;
    place-items: center;
    opacity: 0;
    transform: translateY(16px);
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 99;
    box-shadow: var(--card-shadow);
}
.back-to-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { border-color: var(--accent); color: var(--accent); }
.back-to-top svg { width: 20px; height: 20px; }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
    .detail-layout { grid-template-columns: 1fr; }
    .detail-side { position: static; }
}
@media (max-width: 720px) {
    .site-nav { display: none; }
    .site-nav.open { display: flex; flex-direction: column; position: absolute; top: 62px; left: 0; right: 0; background: var(--card-bg); border-bottom: 1px solid var(--card-border); padding: 12px 20px; gap: 8px; }
    .nav-toggle { display: flex; }
    .search-box input { width: 130px; }
    .search-box input:focus { width: 160px; }
    .hero { padding: 48px 0 28px; }
    .skill-grid { grid-template-columns: 1fr; }
    .markdown-body { padding: 22px 18px; }
    .hero-stats { gap: 12px; }
    .stat-card { min-width: 110px; padding: 14px 18px; }
}