/* =====================================================================
   custom.css — 全站自定义样式（覆盖 hexo-theme-keep 默认样式）
   维护：OpenClaw Agent ｜ 规则见 BLOG_GUIDE.md
   只用主题已有的 CSS 变量，保证亮/暗色模式都能用
   ===================================================================== */

/* ---------- 1. 基础排版 ---------- */
:root {
  --oc-radius: 14px;
  --oc-radius-sm: 8px;
  --oc-max-width: 1180px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.6; /* 主题很多组件是固定行高布局，这里不能放大；正文行高见下方 .keep-markdown-body */
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

.keep-markdown-body {
  line-height: 1.85;
}

.keep-markdown-body h1,
.keep-markdown-body h2,
.keep-markdown-body h3,
.keep-markdown-body h4 {
  letter-spacing: 0.01em;
  font-weight: 700;
  margin-top: 1.9em;
  margin-bottom: 0.7em;
}

.keep-markdown-body h2 {
  padding-left: 12px;
  border-left: 4px solid var(--primary-color);
  line-height: 1.4;
}

.keep-markdown-body h3 {
  color: var(--text-color-1);
}

.keep-markdown-body p {
  margin: 0.9em 0;
}

.keep-markdown-body a {
  color: var(--primary-color);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in srgb, var(--primary-color) 45%, transparent);
  transition: border-color 0.2s ease, opacity 0.2s ease;
}

.keep-markdown-body a:hover {
  border-bottom-style: solid;
  opacity: 0.85;
}

.keep-markdown-body img {
  border-radius: var(--oc-radius-sm);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.09);
}

/* 引用块 */
.keep-markdown-body blockquote {
  border-left: 4px solid var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 6%, transparent);
  border-radius: 0 var(--oc-radius-sm) var(--oc-radius-sm) 0;
  padding: 0.8em 1.1em;
  color: var(--text-color-3);
  margin: 1.2em 0;
}

/* 行内代码 */
.keep-markdown-body code:not([class*="language-"]) {
  background: color-mix(in srgb, var(--primary-color) 10%, transparent);
  color: var(--primary-color-dark-1);
  padding: 0.15em 0.4em;
  border-radius: 5px;
  font-size: 0.9em;
}

/* 代码块 */
.keep-markdown-body pre,
.keep-markdown-body .highlight {
  border-radius: var(--oc-radius-sm);
  border: 1px solid var(--border-color);
}

.keep-markdown-body pre {
  padding: 14px 16px;
  line-height: 1.65;
}

/* 表格 */
.keep-markdown-body table {
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--oc-radius-sm);
  overflow: hidden;
  width: 100%;
}

.keep-markdown-body table th {
  background: color-mix(in srgb, var(--primary-color) 8%, transparent);
  font-weight: 600;
  text-align: left;
}

.keep-markdown-body table th,
.keep-markdown-body table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-color);
}

.keep-markdown-body table tr:last-child td {
  border-bottom: none;
}

.keep-markdown-body table tbody tr:hover td {
  background: var(--background-color-2);
}

/* ---------- 2. 顶部导航 ---------- */
.header-wrapper {
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--border-color) 60%, transparent);
}

.header-content .logo-title {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.menu-list .menu-item > a {
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--oc-radius-sm);
  padding: 6px 10px;
  transition: background 0.2s ease, color 0.2s ease;
}

.menu-list .menu-item > a:hover {
  background: color-mix(in srgb, var(--primary-color) 10%, transparent);
}

.menu-list .menu-item > a.active {
  color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 12%, transparent);
}

/* ---------- 3. 首页文章列表 ---------- */
.home-article-list {
  max-width: var(--oc-max-width);
  margin: 0 auto;
}

.home-article-item {
  border-radius: var(--oc-radius);
  border: 1px solid var(--border-color);
  background: var(--content-background-color);
  padding: 22px 24px;
  margin-bottom: 18px;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.home-article-item:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--primary-color) 45%, var(--border-color));
  box-shadow: 0 14px 34px var(--shadow-hover-color);
}

.home-article-title,
.home-article-item .home-article-title a {
  font-size: 1.22em;
  font-weight: 700;
  line-height: 1.5;
}

.home-article-meta-info {
  font-size: 0.86em;
  color: var(--text-color-4);
}

.home-article-category a,
.home-article-tag a,
.article-tags a,
.article-categories a {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--primary-color) 10%, transparent);
  color: var(--primary-color);
  font-size: 0.82em;
  text-decoration: none;
  border-bottom: none;
  transition: background 0.2s ease;
}

.home-article-category a:hover,
.home-article-tag a:hover,
.article-tags a:hover,
.article-categories a:hover {
  background: color-mix(in srgb, var(--primary-color) 20%, transparent);
}

/* ---------- 4. 分类 / 标签页 ---------- */
.category-list-container,
.tag-list-container {
  max-width: var(--oc-max-width);
  margin: 0 auto;
}

.all-category-list,
.all-tag-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 12px;
  padding: 0;
  margin: 20px 0;
  list-style: none;
}

.all-category-list-item,
.all-tag-list-item {
  border: 1px solid var(--border-color);
  border-radius: var(--oc-radius);
  background: var(--content-background-color);
  padding: 14px 16px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.all-category-list-item:hover,
.all-tag-list-item:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary-color) 45%, var(--border-color));
  box-shadow: 0 10px 24px var(--shadow-color);
}

.all-category-list-link,
.all-tag-list-link {
  font-weight: 600;
  color: var(--text-color-1);
  text-decoration: none;
}

.all-category-list-count,
.all-tag-list-count {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 0.75em;
  color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 12%, transparent);
  vertical-align: 1px;
}

/* ---------- 5. 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
  padding-bottom: 26px;
}

.footer .info-container {
  font-size: 0.88em;
  color: var(--text-color-4);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  justify-content: center;
}

.footer .info-item a {
  color: var(--text-color-3);
  text-decoration: none;
  border-bottom: none;
}

.footer .info-item a:hover {
  color: var(--primary-color);
}

/* ---------- 6. 细节 ---------- */
::selection {
  background: color-mix(in srgb, var(--primary-color) 22%, transparent);
}

/* 返回顶部 / 工具栏圆角 */
.fas.fa-arrow-up,
.fas.fa-arrow-down {
  transition: transform 0.2s ease;
}

/* 移动端留白 */
@media (max-width: 768px) {
  body {
    font-size: 15.5px;
  }
  .home-article-item {
    padding: 16px 16px;
    border-radius: 12px;
  }
  .all-category-list,
  .all-tag-list {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
  }
}

/* ---------- 7. 标签云（tags 页） ---------- */
.tagcloud-container {
  max-width: var(--oc-max-width);
  margin: 0 auto;
}

.tagcloud-content {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 8px 0 20px;
}

.tagcloud-content a {
  display: inline-block;
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(0, 102, 204, 0.08);
  background: color-mix(in srgb, var(--primary-color) 9%, transparent);
  border: 1px solid var(--border-color);
  color: var(--text-color-2);
  text-decoration: none;
  line-height: 1.5;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease,
    border-color 0.18s ease;
}

.tagcloud-content a:hover {
  transform: translateY(-2px);
  color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 18%, transparent);
  border-color: color-mix(in srgb, var(--primary-color) 40%, var(--border-color));
}

/* 归档页年份标题 */
.archive-year-wrap .archive-year,
.archive-list .archive-year {
  color: var(--primary-color);
  font-weight: 700;
}

/* 文章页上一页/下一页 */
.article-nav .article-nav-link-wrap {
  border: 1px solid var(--border-color);
  border-radius: var(--oc-radius-sm);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.article-nav .article-nav-link-wrap:hover {
  border-color: color-mix(in srgb, var(--primary-color) 40%, var(--border-color));
  background: var(--background-color-2);
}

/* ---------- 8. 标签墙（tags 页重做：热门标签 + 索引式列表） ---------- */
.tag-wall {
  max-width: 920px;
  margin: 0 auto;
  padding: 8px 0 48px;
}

.tag-wall-head {
  text-align: center;
  margin: 10px 0 28px;
}

.tag-wall-title {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-color-1);
  margin: 0;
}

.tag-wall-sub {
  margin: 8px 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--text-color-4);
}

/* 热门标签：字号递变，居中排布 */
.tag-wall-hot {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 6px 26px;
  padding: 6px 0 30px;
  margin-bottom: 26px;
  border-bottom: 1px dashed var(--border-color);
}

.tag-hot-item {
  color: var(--text-color-2);
  text-decoration: none;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.01em;
  transition: color 0.18s ease, letter-spacing 0.18s ease;
}

.tag-hot-item:hover {
  color: var(--primary-color);
  letter-spacing: 0.03em;
}

.tag-hot-count {
  font-size: 0.42em;
  font-weight: 400;
  color: var(--text-color-5);
  margin-left: 4px;
  vertical-align: super;
}

/* 其余标签：多栏索引，点线引导 + 计数 */
.tag-wall-index {
  columns: 3 210px;
  column-gap: 38px;
}

.tag-index-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 5px 2px;
  color: var(--text-color-3);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.6;
  break-inside: avoid;
  transition: color 0.18s ease;
}

.tag-index-item:hover {
  color: var(--primary-color);
}

.tag-index-name {
  flex: 0 0 auto;
  max-width: 75%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tag-index-dots {
  flex: 1 1 auto;
  border-bottom: 1px dotted color-mix(in srgb, var(--text-color-5) 55%, transparent);
  transform: translateY(-3px);
  min-width: 12px;
}

.tag-index-count {
  flex: 0 0 auto;
  font-size: 0.78rem;
  color: var(--text-color-5);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 768px) {
  .tag-wall-hot {
    gap: 4px 18px;
  }
  .tag-wall-index {
    columns: 2 150px;
    column-gap: 22px;
  }
}

/* ---------- 9. 友链页（只做配色与圆角，不动主题的几何布局） ---------- */
/* 主题用 float 两栏 + 头像绝对定位，任何 display/position 覆盖都会让图文错位，
   所以这里只加边框、圆角、悬停效果，布局一律交给主题。 */
.friends-link-container .friends-link-list .friends-link-item .content {
  border: 1px solid var(--border-color);
  border-radius: var(--oc-radius);
  box-shadow: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.friends-link-container .friends-link-list .friends-link-item .content:hover {
  border-color: color-mix(in srgb, var(--primary-color) 38%, var(--border-color));
  box-shadow: 0 10px 26px var(--shadow-color);
  transform: translateY(-2px);
}

.friends-link-container .friends-link-list .friends-link-item .content .info .name {
  color: var(--text-color-1);
  font-weight: 600;
  height: auto !important;
  font-size: 17px;
  line-height: 26px;
}

.friends-link-container .friends-link-list .friends-link-item .content .info .description {
  height: auto !important;
  font-size: 13px;
  line-height: 19px;
}

/* 名称 + 简介在卡片内垂直居中 */
.friends-link-container .friends-link-list .friends-link-item .content .info {
  justify-content: center;
  height: 100% !important;
  padding: 0 12px !important;
}

.friends-link-container .friends-link-list .friends-link-item .content:hover .info .name {
  color: var(--primary-color);
}

/* ---------- 11. 首屏标语 ---------- */
.first-screen-container .description .desc-item {
  font-size: clamp(1.45rem, 2.3vw, 2.1rem);
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.85;
  background-image: linear-gradient(100deg,
      #0a3470 0%,
      #17408f 30%,
      #3b2a86 62%,
      #0a3470 100%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 10px rgba(40, 60, 140, 0.22));
  animation: hero-in 1s cubic-bezier(0.22, 0.61, 0.36, 1) both,
             hero-shine 9s linear infinite 1s;
}

.first-screen-container .description .desc-item:nth-child(2) {
  animation-delay: 0.18s, 1s;
}

/* 两侧的小星星 */
.first-screen-container .description .desc-item::before,
.first-screen-container .description .desc-item::after {
  content: "✦";
  font-size: 0.55em;
  vertical-align: 0.35em;
  margin: 0 0.7em;
  color: var(--primary-color);
  -webkit-text-fill-color: var(--primary-color);
  opacity: 0.55;
  animation: pet-twinkle 3.2s ease-in-out infinite;
}

.first-screen-container .description .desc-item::after {
  animation-delay: 1.2s;
}

@keyframes hero-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes hero-shine {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

@media (prefers-reduced-motion: reduce) {
  .first-screen-container .description .desc-item,
  .first-screen-container .description .desc-item::before,
  .first-screen-container .description .desc-item::after,
  #pet-sparkles path { animation: none; }
}