/* Chinese-friendly typography and UI refinements */

/* 1) Base font stack for Simplified Chinese with Latin fallbacks */
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei", "WenQuanYi Micro Hei",
    "Noto Sans", sans-serif;
  line-height: 1.75; /* slightly taller for Chinese readability */
  letter-spacing: 0.1px; /* tiny spacing helps mixed CN/EN */
}

/* 2) Page width and rhythm tweaks (PaperMod compatible) */
.page,
.post,
.single,
.content,
.main {
  max-width: 860px; /* comfortable measure for mixed CN/EN */
}

/* 3) Headings hierarchy with better CJK proportions */
h1, h2, h3, h4, h5, h6 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Hiragino Sans GB",
    "Noto Sans CJK SC", "Source Han Sans SC", "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.35;
}

h1 { font-size: 2rem; margin: 1.2em 0 0.6em; }
h2 { font-size: 1.65rem; margin: 1.1em 0 0.55em; }
h3 { font-size: 1.35rem; margin: 1em 0 0.5em; }
h4 { font-size: 1.15rem; margin: 0.9em 0 0.45em; }

/* 4) Paragraph spacing tuned for dense CJK */
p, ul, ol {
  margin: 0.8em 0;
}

/* 5) Better code presentation for CN articles */
pre, code, kbd, samp {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

pre code {
  font-size: 0.9rem;
}

pre {
  line-height: 1.6;
  border-radius: 8px;
}

code {
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

/* 6) Tables with improved readability */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
}
th, td {
  padding: 0.6em 0.8em;
}
thead th {
  border-bottom: 2px solid rgba(0,0,0,0.06);
}
tbody tr + tr {
  border-top: 1px solid rgba(0,0,0,0.06);
}

/* 7) Quote style with CN tone */
blockquote {
  border-left: 3px solid rgba(0,0,0,0.12);
  padding: 0.6em 1em;
  color: rgba(0,0,0,0.75);
  background: rgba(0,0,0,0.02);
}

/* 8) Lists: better indentation and spacing for nested CN lists */
ul ul, ol ol, ul ol, ol ul {
  margin-top: 0.4em;
  margin-bottom: 0.4em;
}

/* 9) Links: subtle underline and hover color */
a {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 0.12em;
}

/* 10) Images: nicer figure captions spacing */
figure {
  margin: 1.2em 0;
}
figcaption {
  margin-top: 0.4em;
  color: rgba(0,0,0,0.6);
  font-size: 0.95rem;
}

/* 11) Home info bullets spacing (PaperMod) */
.home-info ul {
  margin: 0.6em 0 0 1.25em;
}

/* 12) KaTeX line-height alignment in mixed CN */
.katex { line-height: 1.3; }

/* 13) Footnotes readability */
.footnotes {
  font-size: 0.95rem;
  line-height: 1.6;
}
.footnotes hr { margin: 1.2em 0; }

/* 14) Search page input (PaperMod) */
input#search-input {
  height: 2.4rem;
  padding: 0 0.8rem;
  border-radius: 8px;
}

/* 15) Dark mode tuning for contrasts */
@media (prefers-color-scheme: dark) {
  blockquote { color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.04); border-left-color: rgba(255,255,255,0.18); }
  thead th { border-bottom-color: rgba(255,255,255,0.16); }
  tbody tr + tr { border-top-color: rgba(255,255,255,0.12); }
  figcaption { color: rgba(255,255,255,0.75); }
}