/* ============ 暖色奶油纸质风 · 主题定版 v2 ============ */
/* 所有颜色/圆角/阴影/渐变走变量，备案后可移植 WordPress */

:root {
  /* 背景 */
  --bg: #faf7f2;
  --card: #ffffff;
  --card-hover: #fefcf8;
  /* 文字 */
  --text: #2b2b2b;
  --text-soft: #666666;
  --text-muted: #999999;
  --sub: #6a6a6a;
  /* 主强调：钢笔墨蓝 */
  --accent: #1f3a5f;
  --accent2: #c9a227;
  --accent-light: #3a5a8c;
  --accent-lighter: #e8eef5;
  --accent-dark: #152a45;
  /* 次强调：旧书烫金 */
  --accent-gold: #c9a227;
  --accent-gold-light: #e0c255;
  --accent-gold-lighter: #faf3e0;
  --accent-gold-dark: #a0801a;
  /* 中性 */
  --border: #ece6da;
  --border-light: #f2ede3;
  --line: #ece6da;
  --code-bg: #1f2430;
  --code-text: #e8e6e3;
  /* 圆角 */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  /* 阴影：多层柔和，像纸片叠纸 */
  --shadow: 0 1px 3px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.04);
  --shadow-hover: 0 4px 12px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06);
  --shadow-inner: inset 0 1px 0 rgba(255,255,255,.8);
  /* 渐变 */
  --gradient-title: linear-gradient(135deg, #1f3a5f 0%, #c9a227 100%);
  --gradient-divider: linear-gradient(90deg, transparent, #c9a227, transparent);
  --gradient-bg: radial-gradient(ellipse at top, #fdfaf5 0%, #faf7f2 50%, #f5f0e8 100%);
}

/* ---------- 背景：暖米黄渐变 + 极淡纸张噪点 ---------- */
body {
  background-color: #faf7f2 !important;
  background-image:
    var(--gradient-bg),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E") !important;
  background-attachment: fixed;
  color: #2b2b2b !important;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 排版：柔和衬线标题 + 无衬线正文 ---------- */
h1, h2, h3, h4 {
  font-family: "Noto Serif SC","Source Han Serif SC","Songti SC","STSong",Georgia,"Times New Roman",serif !important;
  font-weight: 600 !important;
  letter-spacing: .01em;
  color: #2f2f2f;
}
h1 { font-weight: 600 !important; line-height: 1.25; }
h2 { font-weight: 600 !important; }
h3 { font-weight: 500 !important; color: #1f3a5f; }

article p, article li { font-size:17px; line-height:1.8; color:#3a3a3a; letter-spacing:.01em; }
article h2 { margin-top:2em; padding-bottom:.5rem; position:relative; }
article h2::after {
  content:""; display:block; width:60px; height:3px; border-radius:2px;
  background:var(--gradient-divider); margin-top:10px;
}
article h3 { margin-top:1.5em; }

/* 首字下沉（焦糖金） */
article p:first-of-type::first-letter {
  font-family: Georgia,"Noto Serif SC",serif;
  font-size:3.2em; float:left; line-height:.85; padding:.05em .12em 0 0;
  color:var(--accent-gold); font-weight:700;
}

/* 引用块 */
blockquote {
  border-left:4px solid var(--accent-gold);
  background:var(--accent-gold-lighter);
  padding:1rem 1.5rem; margin:1.5rem 0;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-style:italic; color:var(--text-soft);
}

/* 分隔线 */
hr { border:none; height:1px; background:linear-gradient(90deg,transparent,var(--border),transparent); margin:3rem 0; }

/* 链接 hover */
article a:hover, .toc-inline a:hover { color:var(--accent-gold); }

/* 标签胶囊 */
.tag {
  display:inline-block; padding:1px 10px; border-radius:999px; font-size:12px;
  background:var(--accent-gold-lighter) !important; color:var(--accent-gold-dark) !important;
  border:1px solid var(--border-light);
}

/* ---------- 卡片：纸片叠纸的光影 ---------- */
.card, .entry, .post, .stat, .toc, .stats-grid > div, .item, .contact a {
  background:var(--card) !important;
  border-radius:var(--radius) !important;
  border:1px solid var(--border-light) !important;
  box-shadow:var(--shadow), var(--shadow-inner) !important;
  transition:all .25s cubic-bezier(.4,0,.2,1);
}
.card, .item, .post { border-left:4px solid var(--accent) !important; }
.card:hover, .item:hover, .post:hover, .stat:hover {
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover), var(--shadow-inner) !important;
  border-left-color:var(--accent-gold) !important;
  background:var(--card-hover) !important;
}
.card h3, .item h3, .post h3 { color:var(--accent) !important; }

/* “即将上线”虚线占位卡 */
.soon-card {
  background:transparent !important;
  border:2px dashed var(--border) !important;
  border-left:2px dashed var(--border) !important;
  border-radius:var(--radius) !important;
  padding:18px 22px !important;
  color:var(--text-muted) !important;
  box-shadow:none !important;
  transition:.25s;
}
.soon-card:hover { border-color:var(--accent-gold) !important; color:var(--accent-gold) !important; transform:none; }
.soon-card b { color:inherit; font-size:15px; }
.soon-card p { margin:4px 0 0; font-size:13px; color:inherit; }

/* ---------- 首屏渐变标题 ---------- */
.grad {
  background:var(--gradient-title) !important;
  -webkit-background-clip:text !important; background-clip:text !important;
  -webkit-text-fill-color:transparent !important; color:transparent !important;
}

/* ---------- 导航：滚动模糊 + 当前项高亮 ---------- */
nav { transition:background .3s ease, box-shadow .3s ease; }
nav.nav-scrolled {
  background:rgba(250,247,242,.85) !important;
  -webkit-backdrop-filter:blur(10px); backdrop-filter:blur(10px);
  box-shadow:0 1px 8px rgba(0,0,0,.06);
}
nav a.active { color:var(--accent-gold) !important; border-bottom:2px solid var(--accent-gold); }

/* ---------- 代码块：深蓝黑 + 语法高亮 + 侧边行号 ---------- */
pre {
  background:var(--code-bg) !important;
  border:1px solid rgba(255,255,255,.1) !important;
  border-radius:var(--radius) !important;
  padding:1.2rem 1.4rem 1.2rem 3.6rem !important;
  position:relative; overflow-x:auto;
}
pre code { background:transparent !important; color:var(--code-text) !important; display:block; font-family:"Fira Code",Consolas,monospace !important; font-size:14px; line-height:1.7; }
.ln-gutter {
  position:absolute; left:0; top:1.2rem; width:2.6rem; text-align:right;
  padding-right:.6rem; border-right:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.3); font-family:"Fira Code",Consolas,monospace;
  font-size:14px; line-height:1.7; white-space:pre; user-select:none; pointer-events:none;
}
/* 语法高亮配色（深色奶油配） */
.hljs { background:transparent !important; color:var(--code-text) !important; }
.hljs-keyword, .hljs-selector-tag, .hljs-built_in { color:#c9a227 !important; }
.hljs-string, .hljs-attr, .hljs-template-variable { color:#7ec699 !important; }
.hljs-comment, .hljs-quote { color:#5c6370 !important; font-style:italic; }
.hljs-title, .hljs-function, .hljs-name { color:#61afef !important; }
.hljs-number, .hljs-literal { color:#d19a66 !important; }
.hljs-variable, .hljs-params { color:#e8e6e3 !important; }
.copy-btn { background:rgba(255,255,255,.08) !important; color:#cbd5e1 !important; border:1px solid rgba(255,255,255,.15) !important; }
.copy-btn:hover { background:rgba(255,255,255,.2) !important; color:#fff !important; }

/* 行内代码：淡金底 + 深金字 */
code { background:var(--accent-gold-lighter); color:var(--accent-gold-dark); border-radius:4px; padding:.12rem .4rem; font-size:.9em; }
pre code, pre code .ln::before { background:transparent !important; }

/* ---------- 表格 ---------- */
th { background:#f3ece2 !important; color:var(--accent); }
td, th { border-color:var(--border); }
tr:nth-child(even) td { background:#fdfcf9; }

/* ---------- 回到顶部 ---------- */
.backtop { position:fixed; right:22px; bottom:22px; width:44px; height:44px; border-radius:50%; background:var(--accent); color:#fff; border:none; font-size:20px; cursor:pointer; display:none; align-items:center; justify-content:center; box-shadow:0 4px 14px rgba(0,0,0,.16); z-index:90; transition:.25s; }
.backtop:hover { background:var(--accent-gold); transform:scale(1.1); }

/* ---------- 点赞 ---------- */
.likebar { margin-top:22px; padding-top:14px; border-top:1px dashed var(--border); display:flex; align-items:center; gap:10px; }
.likebar .like { background:#fff; border:1px solid var(--border); color:var(--accent); border-radius:980px; padding:8px 18px; font-size:14px; cursor:pointer; transition:.2s; }
.likebar .like:hover { background:var(--accent); color:#fff; }
.likebar small { color:var(--text-muted); font-size:12px; }

/* ---------- 全文搜索（Pagefind） ---------- */
.search-toggle { position:fixed; right:22px; top:16px; z-index:95; width:40px; height:40px; border-radius:50%; border:1px solid var(--border); background:rgba(255,255,255,.92); color:var(--accent); font-size:18px; cursor:pointer; box-shadow:var(--shadow); transition:.2s; }
.search-toggle:hover { background:var(--accent-gold-lighter); border-color:var(--accent-gold); }
.search-panel { position:fixed; right:22px; top:64px; width:min(420px,92vw); background:#fff; border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow-hover); padding:12px; display:none; z-index:95; }
.search-panel.open { display:block; }
.search-input { width:100%; padding:10px 12px; border:1px solid var(--border); border-radius:8px; font-size:15px; outline:none; background:#fdfcf9; }
.search-input:focus { border-color:var(--accent); }
.search-results { margin-top:8px; max-height:52vh; overflow:auto; }
.sr-item { display:block; padding:8px 10px; border-radius:8px; color:var(--text); }
.sr-item:hover { background:var(--accent-gold-lighter); text-decoration:none; }
.sr-item b { color:var(--accent); font-size:15px; }
.sr-item p { margin:2px 0 0; font-size:13px; color:var(--text-soft); }
.sr-empty { color:var(--text-muted); font-size:14px; margin:6px 0; }
@media (max-width:768px){ .search-panel { left:12px; right:12px; width:auto; } }

/* ---------- 滚动入场动效 ---------- */
.fade-in-up { opacity:0; transform:translateY(20px); transition:opacity .6s ease, transform .6s ease; }
.fade-in-up.visible { opacity:1; transform:translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width:1024px){ article { max-width:100%; } .cards { grid-template-columns:1fr; } }
@media (max-width:768px){
  h1 { font-size:2rem !important; }
  .card, .post, .item { padding:20px !important; }
  pre code { font-size:14px; }
}

  /* ---------- 尊重“减少动效” ---------- */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation:none !important; transition:none !important; }
    .fade-in-up, .reveal { opacity:1 !important; transform:none !important; }
  }

  /* ==========================================================
     提示条统一到设计 token
     61 个页面各自内联写了 .tip { background:#eef4ff }（旧蓝），
     与 DESIGN_TOKENS 的奶油米黄 + 钢笔墨蓝 + 旧书烫金不一致。
     这里用设计 token 统一覆盖，颜色只保留在 theme.css 一处。
     ========================================================== */
  .tip {
    background: var(--accent-lighter) !important;
    border-left-color: var(--accent) !important;
    color: var(--accent-dark) !important;
  }

  /* ==========================================================
     灵动岛（全站悬浮胶囊）
     折叠态：站点状态点 + 当前页面名 + 阅读进度
     展开态：正在做 + 进度条 + 六个入口 + 回到顶部 / 搜索
     由 assets/interact.js 注入，样式全部集中在这里。
     ========================================================== */
  :root {
    --island-bg: #152a45;
    --island-fg: #f8f4ea;
    --island-gold: #c9a227;
    --island-gold-light: #e0c255;
  }

  nav { transition: transform .4s cubic-bezier(.22,.61,.36,1), background .3s ease, box-shadow .3s ease; }
  nav.nav-hidden { transform: translateY(-110%); }

  .island {
    position: fixed; left: 50%; top: 12px; z-index: 130;
    max-width: calc(100vw - 24px);
    color: var(--island-fg);
    background: var(--island-bg);
    border: 1px solid rgba(201,162,39,.45);
    border-radius: 999px;
    box-shadow: 0 10px 28px rgba(21,42,69,.28), inset 0 1px 0 rgba(255,255,255,.08);
    font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
    font-size: 13px; line-height: 1;
    overflow: hidden;
    opacity: 0; pointer-events: none;
    transform: translate(-50%, -10px) scale(.96);
    transition: opacity .28s ease, transform .45s cubic-bezier(.22,.61,.36,1),
                border-radius .45s cubic-bezier(.22,.61,.36,1), width .45s cubic-bezier(.22,.61,.36,1);
  }
  .island.on { opacity: 1; pointer-events: auto; transform: translate(-50%, 0) scale(1); }
  .island.open { border-radius: 20px; width: min(320px, calc(100vw - 24px)); }

  .island-head {
    display: flex; align-items: center; gap: 9px; width: 100%;
    min-height: 34px; padding: 8px 15px;
    background: none; border: 0; color: inherit; font: inherit; cursor: pointer;
  }
  .island-dot {
    flex: none; width: 8px; height: 8px; border-radius: 50%;
    background: var(--island-gold);
    animation: island-pulse 2.6s ease-out infinite;
  }
  @keyframes island-pulse {
    0% { box-shadow: 0 0 0 0 rgba(201,162,39,.5); }
    70% { box-shadow: 0 0 0 9px rgba(201,162,39,0); }
    100% { box-shadow: 0 0 0 0 rgba(201,162,39,0); }
  }
  .island-label { max-width: 40vw; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .island-pct { color: var(--island-gold-light); font-size: 12px; font-variant-numeric: tabular-nums; }
  .island-caret { color: rgba(248,244,234,.5); font-size: 10px; transition: transform .35s ease; }
  .island.open .island-caret { transform: rotate(180deg); }

  .island-body { display: none; padding: 0 15px 14px; }
  .island.open .island-body { display: block; }

  .island-live { font-size: 12.5px; color: #ece3d0; padding-bottom: 10px; }
  .island-live b { color: var(--island-gold-light); font-weight: 600; }

  .island-track { height: 4px; border-radius: 999px; background: rgba(255,255,255,.14); overflow: hidden; }
  .island-track i { display: block; width: 0; height: 100%; border-radius: 999px; background: linear-gradient(90deg,var(--island-gold),var(--island-gold-light)); transition: width .15s linear; }

  .island-links { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 12px; }
  .island-links a { display: block; padding: 9px 11px; border-radius: 10px; background: rgba(255,255,255,.06); color: #f2ece0; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .island-links a:hover { background: rgba(201,162,39,.22); color: #fff; }

  .island-actions { display: flex; gap: 8px; margin-top: 10px; }
  .island-actions button { flex: 1; padding: 9px 11px; border-radius: 10px; border: 1px solid rgba(201,162,39,.4); background: transparent; color: var(--island-gold-light); font: inherit; font-size: 12.5px; cursor: pointer; }
  .island-actions button:hover { background: rgba(201,162,39,.18); }

  @media (max-width:640px) {
    .island { top: 8px; font-size: 12px; }
    .island-label { max-width: 44vw; }
    .island-head { padding: 7px 13px; }
  }