/* ========== 多语言字体修复 ========== */
html[lang="zh-CN"] body,
html[lang="zh"] body {
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "PingFang SC",
    "Hiragino Sans GB",
    "Noto Sans SC",
    "Microsoft YaHei",
    "WenQuanYi Micro Hei",
    sans-serif !important;
}
html[lang="zh-CN"] pre,
html[lang="zh-CN"] code,
html[lang="zh-CN"] .highlight,
html[lang="zh-CN"] .code-block,
html[lang="zh"] pre,
html[lang="zh"] code,
html[lang="zh"] .highlight,
html[lang="zh"] .code-block {
  font-family: consolas, Menlo, "Ubuntu Mono", monospace,
    "PingFang SC", "Microsoft YaHei", sans-serif !important;
}

html[lang="ja"] body {
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Hiragino Kaku Gothic ProN",
    "Hiragino Sans",
    "Yu Gothic",
    "Noto Sans JP",
    "BIZ UDPGothic",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif !important;
}
html[lang="ja"] pre,
html[lang="ja"] code,
html[lang="ja"] .highlight {
  font-family: consolas, Menlo, "Ubuntu Mono", monospace,
    "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif !important;
}

html[lang="en"] body {
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Helvetica Neue",
    Roboto,
    Lato,
    sans-serif !important;
}

/* ================================================================
   简约几何背景 — 替代单调纯色
   ================================================================ */
/* 页面底色：微渐变 + SVG 网格纹理 */
#web_bg {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59,112,252,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(59,112,252,0.03) 0%, transparent 50%),
    linear-gradient(180deg, #f8f9fc 0%, #f0f3fa 30%, #f8f9fc 100%);
  background-attachment: fixed;
}

/* 几何网格点阵（局部） */
#body-wrap {
  background-image:
    radial-gradient(circle, rgba(59,112,252,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
}

/* 暗色模式背景 */
[data-theme="dark"] #web_bg {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59,112,252,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(59,112,252,0.06) 0%, transparent 50%),
    linear-gradient(180deg, #0d1117 0%, #111820 50%, #0d1117 100%);
  background-attachment: fixed;
}

[data-theme="dark"] #body-wrap {
  background-image:
    radial-gradient(circle, rgba(59,112,252,0.1) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
}

/* 内容区域背景半透明，稍微露出底层纹理 */
#content-inner,
#post,
#page {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(6px);
}

[data-theme="dark"] #content-inner,
[data-theme="dark"] #post,
[data-theme="dark"] #page {
  background: rgba(22,27,34,0.85);
  backdrop-filter: blur(6px);
}

/* 侧边栏卡片也微透明 */
.card-widget {
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(4px);
}

[data-theme="dark"] .card-widget {
  background: rgba(22,27,34,0.88);
  backdrop-filter: blur(4px);
}

/* ========== 头图遮罩 ========== */
#page-header:before {
  background: rgba(0,0,0,0.3) !important;
}
#page-header.full_page {
  height: 100vh;
}
#site-info {
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

/* ========== 头像 ========== */
.card-author-img .avatar-img {
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(59,112,252,0.3);
  transition: transform 0.3s ease;
}
.card-author-img .avatar-img:hover {
  transform: rotate(360deg) scale(1.1);
}

/* ========== 卡片增强 ========== */
.card-widget,
#post,
#page {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  border-radius: 12px;
  transition: box-shadow 0.3s ease;
}
.card-widget:hover {
  box-shadow: 0 4px 24px rgba(59,112,252,0.12);
}

/* ========== 按钮 ========== */
#article-container .btn-beautify {
  border-radius: 8px;
}

/* ========== 标题装饰线 ========== */
#article-container h1,
#article-container h2,
#article-container h3 {
  position: relative;
  padding-left: 16px;
}
#article-container h2::before,
#article-container h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: linear-gradient(180deg, #3b70fc, #8b5cf6);
  border-radius: 2px;
}

/* ========== 滚动条 ========== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #3b70fc, #8b5cf6);
  border-radius: 4px;
}

/* ========== hl-label 标签 ========== */
.hl-label {
  font-weight: 600;
  font-size: 0.9em;
  color: #fff !important;
}
.hl-label.default { background-color: #6b7280 !important; }
.hl-label.blue    { background-color: #2563eb !important; }
.hl-label.green   { background-color: #047857 !important; }
.hl-label.pink    { background-color: #be185d !important; }
.hl-label.orange  { background-color: #b45309 !important; }
.hl-label.red     { background-color: #b91c1c !important; }
.hl-label.purple  { background-color: #7c3aed !important; }

/* ========== 标签云 ========== */
.card-tag-cloud a {
  border-radius: 8px;
  transition: all 0.3s ease;
}
.card-tag-cloud a:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* ========== 语言切换器 ========== */
.lang-switcher {
  position: fixed;
  bottom: 28px;
  right: 20px;
  z-index: 1000;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--card-bg, #fff);
  border: 1px solid var(--btn-default-color, #e0e0e0);
  border-radius: 24px;
  font-size: 0.88em;
  font-weight: 600;
  color: var(--font-color, #333);
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
  transition: all 0.25s ease;
}
.lang-btn:hover {
  box-shadow: 0 4px 20px rgba(59,112,252,0.25);
  border-color: #3b70fc;
  color: #3b70fc;
}
.lang-dropdown {
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: 8px;
  background: var(--card-bg, #fff);
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s ease;
  min-width: 130px;
}
.lang-switcher:hover .lang-dropdown,
.lang-btn:focus + .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lang-dropdown a {
  display: block;
  padding: 10px 18px;
  font-size: 0.9em;
  color: var(--font-color, #444);
  text-decoration: none;
  transition: background 0.15s ease;
}
.lang-dropdown a:hover {
  background: rgba(59,112,252,0.08);
  color: #3b70fc;
}
.lang-dropdown a.active {
  background: #3b70fc;
  color: #fff !important;
  font-weight: 600;
}
[data-theme="dark"] .lang-btn {
  background: #1e1e1e;
  border-color: #444;
  color: #ccc;
}
[data-theme="dark"] .lang-btn:hover {
  border-color: #3b70fc;
  color: #3b70fc;
}
[data-theme="dark"] .lang-dropdown {
  background: #1e1e1e;
}
[data-theme="dark"] .lang-dropdown a {
  color: #ccc;
}
[data-theme="dark"] .lang-dropdown a:hover {
  background: rgba(59,112,252,0.15);
  color: #3b70fc;
}
@media screen and (max-width: 768px) {
  .lang-switcher {
    bottom: 16px;
    right: 12px;
  }
  .lang-btn {
    padding: 8px 12px;
    font-size: 0.82em;
  }
}