/* ============================================================
   linyu-minimal · DeepSeek 风格覆盖层
   2026-08-14 · 白底 + 蓝色强调 + 无衬线 · 极简现代
   说明：此文件在 style.css 之后加载，覆盖生效；
   删除本文件引用即可整体回滚。
   ============================================================ */

/* ---------- 1. 配色：白底 + DeepSeek 蓝 ---------- */
:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f7f7f8;
  --color-text: #1f2329;
  --color-text-secondary: #4b5563;
  --color-text-light: #9ca3af;
  --color-border: #e5e7eb;
  --color-accent: #4d6bfe;
  --color-accent-soft: rgba(77, 107, 254, 0.08);
  --color-accent-strong: #3b55e6;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --content-width: 780px;
  --radius: 12px;
  /* 液态玻璃 */
  --glass-bg: rgba(255, 255, 255, 0.22);
  --glass-bg-strong: rgba(255, 255, 255, 0.28);
  --glass-border: rgba(255, 255, 255, 0.55);
  --glass-shadow: 0 8px 32px rgba(31, 35, 41, 0.08);
  --glass-blur: blur(16px) saturate(170%);
}

html.dark {
  --color-bg: #17171b;
  --color-bg-soft: #1e1e24;
  --color-text: #ececef;
  --color-text-secondary: #a1a1aa;
  --color-text-light: #6e6e76;
  --color-border: #2a2a31;
  --color-accent: #6b8aff;
  --color-accent-strong: #8fa7ff;
  --color-accent-soft: rgba(107, 138, 255, 0.12);
  --glass-bg: rgba(30, 30, 36, 0.42);
  --glass-bg-strong: rgba(30, 30, 36, 0.5);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* ---------- 2. 全局 ---------- */
body {
  background: #eef2ff;
  color: var(--color-text);
  font-family: var(--font-sans);
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 浮动光斑背景（液态玻璃氛围） */
.glass-blobs {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(1100px 640px at 8% -10%, rgba(96, 120, 255, 0.34), transparent 60%),
    radial-gradient(900px 640px at 92% -6%, rgba(107, 138, 255, 0.30), transparent 58%),
    radial-gradient(1000px 640px at 50% 120%, rgba(140, 165, 255, 0.24), transparent 62%),
    linear-gradient(180deg, #eef2ff 0%, #f3f4fb 50%, #eaf1ff 100%);
}

.glass-blobs-parallax {
  position: absolute;
  top: -60px;
  left: -60px;
  right: -60px;
  bottom: -60px;
  will-change: transform;
}

html.dark .glass-blobs {
  background:
    radial-gradient(1100px 640px at 8% -10%, rgba(96, 120, 255, 0.26), transparent 60%),
    radial-gradient(900px 640px at 92% -6%, rgba(107, 138, 255, 0.22), transparent 58%),
    #0e0e12;
}

.blob {
  position: absolute;
  border-radius: 42% 58% 60% 40% / 45% 48% 52% 55%;
  will-change: transform, border-radius;
  animation: blob-float 12s ease-in-out infinite, blob-morph 16s ease-in-out infinite;
}
.blob-1 {
  width: 60vw; height: 60vw;
  max-width: 640px; max-height: 640px;
  top: -8vh; left: -10vw;
  background: radial-gradient(circle at 35% 30%, rgba(96, 120, 255, 0.66) 0%, rgba(96, 120, 255, 0.24) 45%, transparent 70%);
}
.blob-3 {
  width: 64vw; height: 64vw;
  max-width: 680px; max-height: 680px;
  bottom: -8vh; right: -10vw;
  background: radial-gradient(circle at 65% 70%, rgba(130, 160, 255, 0.54) 0%, rgba(130, 160, 255, 0.20) 45%, transparent 70%);
  animation-duration: 14s, 18s;
  animation-delay: -7s, -3s;
}

@keyframes blob-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(110px, -80px) scale(1.12); }
  50% { transform: translate(-70px, 70px) scale(0.9); }
  75% { transform: translate(50px, -40px) scale(1.06); }
}

@keyframes blob-morph {
  0%, 100% { border-radius: 42% 58% 60% 40% / 45% 48% 52% 55%; }
  25% { border-radius: 60% 40% 48% 52% / 52% 60% 40% 48%; }
  50% { border-radius: 48% 52% 42% 58% / 58% 42% 58% 42%; }
  75% { border-radius: 55% 45% 62% 38% / 42% 55% 45% 55%; }
}

/* 内容置于光斑之上 */
.site-main,
.site-footer {
  position: relative;
  z-index: 1;
}

::selection {
  background: var(--color-accent);
  color: #fff;
}

a { text-decoration: none; color: var(--color-text); }
a:hover { color: var(--color-accent); }

/* ---------- 3. 头部：液态玻璃 ---------- */
.site-header {
  border-top: none;
  border-bottom: 1px solid var(--glass-border);
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.header-inner {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.site-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.2;
}
.site-title a {
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.site-title a::before {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 3px;
  flex-shrink: 0;
}
.site-title a:hover { color: var(--color-accent); }
.site-desc {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 4px;
}
.main-nav a {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 6px 10px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.main-nav a:hover {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}
.main-nav .current-menu-item > a,
.main-nav .current_page_item > a {
  color: var(--color-accent);
  font-weight: 600;
}
.main-nav a::after { display: none; }

/* ---------- 4. 首页刊头：极简 ---------- */
.masthead {
  padding: 56px 0 40px;
  text-align: left;
  position: relative;
}
.masthead-date {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 14px;
  letter-spacing: 0;
}
.masthead-title {
  font-size: clamp(30px, 5vw, 42px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 12px;
  color: var(--color-text);
}
.masthead-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin: 0;
  max-width: 520px;
  line-height: 1.7;
}
.masthead-rule {
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  margin: 20px 0 0;
}
.masthead::after { display: none; }

/* ---------- 5. 分类/标签 ---------- */
.cat-section { padding: 0 0 8px; }
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  border-top: none;
  border-bottom: none;
}
.cat-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.cat-card:hover {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.cat-index {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 1;
  flex-shrink: 0;
}
.cat-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}
.cat-count {
  margin-left: auto;
  font-size: 12px;
  color: var(--color-text-light);
}
.cat-card:hover .cat-name { color: var(--color-accent); }

/* 标签 chips */
.tag-section { padding: 8px 0 0; }
.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  font-size: 14px;
  color: var(--color-text-secondary);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 999px;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
}
.tag-chip:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  transform: translateY(-2px);
}
.tag-count {
  font-size: 12px;
  color: var(--color-text-light);
}

/* ---------- 6. 文章清单 ---------- */
.latest-posts { padding-top: 44px; }
.section-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--color-text);
  text-transform: none;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}
.section-title::before {
  content: "";
  width: 4px;
  height: 16px;
  background: var(--color-accent);
  border-radius: 2px;
  flex-shrink: 0;
}
.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.post-list { counter-reset: postnum; }
.post-item {
  position: relative;
  padding: 28px;
  margin-bottom: 16px;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.55);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.post-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(31, 35, 41, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.55);
  border-color: var(--color-accent);
}
.post-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0));
  pointer-events: none;
}
.post-item .post-meta {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 8px;
  text-transform: none;
  letter-spacing: 0;
}
.post-item h2 {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0;
  margin-bottom: 8px;
}
.post-item h2 a {
  color: var(--color-text);
  transition: color 0.2s;
}
.post-item h2 a:hover { color: var(--color-accent); }
.post-item .post-excerpt {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 640px;
}
.post-item .post-excerpt p { margin: 0; }

/* ---------- 7. 正文精排 ---------- */
.post-header h1 {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.post-content {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
}
.post-content p { margin: 0 0 1.4em; }
.post-content > p:first-of-type::first-letter {
  font-size: 1em;
  font-weight: 400;
  float: none;
  line-height: inherit;
  margin: 0;
  color: inherit;
}
.post-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 1.8em 0 0.8em;
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--color-border);
  letter-spacing: 0;
}
.post-content h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 1.6em 0 0.6em;
}
.post-content blockquote {
  margin: 1.6em 0;
  padding: 16px 20px;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-secondary);
  font-size: 15.5px;
  line-height: 1.9;
  background: var(--color-bg-soft);
  border-radius: 0 8px 8px 0;
}
.post-content a {
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent-soft);
  transition: border-color 0.2s;
}
.post-content a:hover { border-bottom-color: var(--color-accent); }
.post-content img { border-radius: 8px; }
.post-content code {
  font-family: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  font-size: 0.88em;
  background: var(--color-bg-soft);
  padding: 3px 7px;
  border-radius: 6px;
}
.post-content pre {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 18px 20px;
  overflow-x: auto;
  line-height: 1.7;
}
.post-cover img { border-radius: 8px; }

/* ---------- 8. 页脚 ---------- */
.footer-inner {
  border-top: 1px solid var(--color-border);
  padding-top: 28px;
  margin-top: 40px;
}
.footer-inner, .site-footer {
  font-size: 13px;
  color: var(--color-text-light);
}

/* ---------- 9. 归档/搜索标题 ---------- */
.archive-title, .search-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}

/* ---------- 10. 动效杂项 ---------- */
.reading-progress {
  height: 3px;
  background: var(--color-accent);
}
.back-to-top {
  border-color: var(--glass-border);
  color: var(--color-text-secondary);
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: 10px;
}
.back-to-top:hover { color: var(--color-accent); border-color: var(--color-accent); }
.like-btn:hover { color: var(--color-accent); border-color: var(--color-accent); }
.toc {
  border-left: 2px solid var(--color-accent-soft);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
}
.dark-toggle, .search-toggle {
  color: var(--color-text-secondary);
}
.dark-toggle:hover, .search-toggle:hover { color: var(--color-accent); }
.account-link {
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 500;
}

/* ---------- 11. 响应式 ---------- */
@media (max-width: 768px) {
  .masthead { padding: 36px 0 28px; }
  .cat-card { padding: 12px 14px; }
  .post-item { padding: 22px 18px; }
  .header-inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 14px 20px 10px;
    gap: 8px;
  }
}

/* ---------- 12. 热门文章：液态玻璃化 + 收窄间距 ---------- */
.site-main {
  padding-bottom: 16px;
  min-height: 0;
}
.hot-posts {
  margin-top: 12px;
}
.hot-posts-inner {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
}
.hot-posts-title {
  color: var(--color-text);
  font-weight: 600;
}
.hot-posts-list li {
  border-bottom: 1px solid var(--glass-border);
}
.hot-posts-list li:last-child {
  border-bottom: none;
}
.hot-posts-list a {
  color: var(--color-text);
}
.hot-posts-list a:hover {
  color: var(--color-accent);
}
.hot-posts-views {
  color: var(--color-text-light);
}
.hot-posts-random a {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  color: var(--color-text-secondary);
}
.hot-posts-random { display: none; }

/* ---------- 13. 登录/注册/找回密码页：液态玻璃化 ---------- */
.auth-wrap {
  max-width: 420px;
  margin: 0 auto;
  padding: 60px 20px 48px;
}
.auth-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: var(--glass-shadow);
  padding: 44px 36px;
}
.auth-title {
  font-family: var(--font-sans);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 8px;
  color: var(--color-text);
}
.auth-sub {
  color: var(--color-text-light);
  letter-spacing: 0;
}
#loginform label,
.auth-form label {
  color: var(--color-text-secondary);
  letter-spacing: 0;
}
#loginform input[type="text"],
#loginform input[type="password"],
.auth-form input[type="text"],
.auth-form input[type="email"],
.auth-form input[type="password"] {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
}
html.dark #loginform input[type="text"],
html.dark #loginform input[type="password"],
html.dark .auth-form input[type="text"],
html.dark .auth-form input[type="email"],
html.dark .auth-form input[type="password"] {
  background: rgba(255, 255, 255, 0.08);
}
#loginform input:focus,
.auth-form input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}
.login-submit input[type="submit"] {
  background: var(--color-accent);
  color: #fff;
  border-radius: 12px;
  font-weight: 600;
  letter-spacing: 0;
  font-size: 15px;
}
.login-submit input[type="submit"]:hover {
  background: var(--color-accent-strong);
  opacity: 1;
}
.auth-btn {
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  color: #fff;
  border-radius: 12px;
  letter-spacing: 0;
}
.auth-btn:hover {
  background: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
  color: #fff;
  opacity: 1;
}
.auth-btn-ghost {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--color-text);
}
.auth-btn-ghost:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}
.auth-links {
  border-top: 1px solid var(--glass-border);
}
.auth-links a {
  color: var(--color-text-secondary);
}
.auth-links a:hover {
  color: var(--color-accent);
}

/* ---------- 14. 玻璃高光（内发光 + 顶部亮线） ---------- */
.hot-posts-inner,
.auth-card {
  position: relative;
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.55);
}
.hot-posts-inner::before,
.auth-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0));
  pointer-events: none;
}

/* 头部玻璃：底部描光 */
.site-header {
  box-shadow: var(--glass-shadow), inset 0 -1px 0 rgba(255, 255, 255, 0.35);
}

/* ---------- 15. 互动：鼠标柔光 + 卡片 3D 倾斜 + 滚动入场 ---------- */
.cursor-glow {
  position: fixed;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(96, 120, 255, 0.16) 0%, rgba(130, 160, 255, 0.07) 45%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  will-change: transform;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.post-item {
  transform-style: preserve-3d;
  will-change: transform;
}
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 16. 页脚联系方式 ---------- */
.footer-social {
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 1px;
}
.footer-social-label {
  color: var(--color-text-light);
}
.footer-social a {
  color: var(--color-accent);
  font-weight: 600;
  margin: 0 2px;
  transition: color 0.2s;
}
.footer-social a:hover {
  color: var(--color-accent-strong);
  text-decoration: underline;
}
.footer-social-sep {
  margin: 0 5px;
  color: var(--color-text-light);
}
.footer-social-id {
  color: var(--color-text-secondary);
  margin-left: 6px;
}


/* 阅读体验增强：目录折叠与代码复制 */
.post-content h2[id], .post-content h3[id] { scroll-margin-top: 88px; }
.toc-title {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  border: 0; padding: 0; background: transparent; color: inherit;
  font: inherit; font-weight: 600; cursor: pointer; text-align: left;
}
.toc-chevron { transition: transform .2s ease; }
.toc.is-collapsed .toc-chevron { transform: rotate(180deg); }
.toc.is-collapsed .toc-list { display: none; }
.code-block-enhanced { position: relative; padding-top: 46px !important; }
.code-copy-btn {
  position: absolute; top: 9px; right: 10px; z-index: 2;
  padding: 5px 10px; border: 1px solid var(--glass-border);
  border-radius: 7px; color: var(--color-text-secondary);
  background: var(--glass-bg-strong); font-size: 12px; line-height: 1.3;
  cursor: pointer; transition: color .2s, border-color .2s, background .2s;
}
.code-copy-btn:hover, .code-copy-btn.is-copied {
  color: var(--color-accent); border-color: var(--color-accent);
}
@media (max-width: 768px) {
  .code-block-enhanced { padding: 44px 14px 16px !important; }
}