/* Site-level override of themes/hugo-xmin/static/css/style.css.
   Modernized minimal design (round 2):
   - fluid 100ch measure (scales with font size)
   - single muted accent for links + visible hover/focus + current-page state
   - clean text nav with active highlight
   - proper typographic hierarchy + WCAG-AA muted text contrast
   - modern code blocks, thin solid rules, refined post listing
   - skip link, image/figure styling, dark mode (prefers-color-scheme)
   Keep in sync with the theme's style.css. */

:root {
  --accent: #3b6ea5;
  --accent-dark: #2c5070;
  --text: #333;
  --muted: #6a6a6e;          /* ~5:1 on white -> WCAG AA */
  --border: #e5e5e5;
  --code-bg: #f6f8fa;
  --inline-code-bg: #f0f0f0;
  --bg: #ffffff;
  --soft: rgba(127, 127, 127, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #6fa8dc;
    --accent-dark: #9ec4ec;
    --text: #d4d4d4;
    --muted: #9a9a9a;
    --border: #33393f;
    --code-bg: #1b1f24;
    --inline-code-bg: #2a2f36;
    --bg: #161a1e;
    --soft: rgba(127, 127, 127, 0.14);
  }
}

html { background: var(--bg); }

body {
  max-width: 100ch;
  margin: auto;
  padding: 1em;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text);
}

/* skip link (keyboard accessibility) */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  padding: 0.5em 1em;
  background: var(--accent);
  color: #fff;
  border-radius: 0 0 4px 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* links: visible, with hover + keyboard focus */
a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--accent-dark); text-decoration-thickness: 2px; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  text-decoration: none;
}

/* typography hierarchy */
h1, h2, h3, h4 { line-height: 1.3; margin: 1.4em 0 0.5em; font-weight: 600; }
h1 { font-size: 1.8em; }
h2 { font-size: 1.4em; }
h3 { font-size: 1.2em; }
h4 { font-size: 1.05em; }
p, ul, ol { margin: 0.6em 0; }

/* header nav: clean text links + current-page highlight */
nav { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5em 1.5em; }
.menu { padding: 0; margin: 0; }
.menu li { display: inline-block; margin-right: 1.5em; }
.menu a { text-decoration: none; color: var(--accent); font-weight: 500; }
.menu a:hover { text-decoration: underline; }
.menu a[aria-current="page"] { color: var(--text); font-weight: 700; }
.nav-right { display: flex; gap: 1em; align-items: baseline; font-size: 0.9em; }
.lang-switch { display: inline-flex; gap: 0.75em; }
.lang-switch a, .rss-link { text-decoration: none; color: var(--accent); }
.lang-switch a:hover, .rss-link:hover { text-decoration: underline; }

/* article meta */
.article-meta { margin: 0.5em 0 1.5em; color: var(--muted); }
.article-meta .title { font-size: 1em; }
.article-meta p.author,
.article-meta p.date { font-size: 0.9em; margin: 0.2em 0 0; }
.article-meta p.tags { font-size: 0.9em; margin: 0.2em 0 0; }
.article-meta p.tags a { color: var(--muted); text-decoration: none; margin-right: 0.5em; }
.article-meta p.tags a:hover { color: var(--accent); text-decoration: underline; }

/* post listing (home / section): no bullets, date column + title */
.post-list { list-style: none; padding: 0; }
.post-list li {
  display: flex;
  gap: 1.5em;
  align-items: baseline;
  padding: 0.2em 0;
}
.post-list .date {
  flex: 0 0 6em;
  font-size: 0.9em;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.draft-flag { color: var(--accent); font-weight: 600; margin-right: 0.25em; }

/* terms listing */
ul.terms { list-style: none; padding: 0; }

/* horizontal rules: thin solid */
hr { border: 0; border-top: 1px solid var(--border); margin: 1.5em 0; }

/* footer */
footer { color: var(--muted); font-size: 0.9em; }
footer a { color: var(--accent); }

/* code: GitHub color scheme (chroma `github` / `github-dark`) */
pre {
  background: var(--code-bg);
  border-radius: 6px;
  padding: 1em;
  overflow-x: auto;
  line-height: 1.5;
}
code { background: var(--inline-code-bg); padding: 0.15em 0.35em; border-radius: 3px; }
pre code { background: none; padding: 0; }

/* highlighted code fence wrapper: GitHub surface, no border */
.highlight { margin: 0.6em 0; }
.highlight pre { border: 0; padding: 1em 1.1em; }

/* GitHub Light token colors (chroma `github` style) */
.chroma { background-color: #f6f8fa; -webkit-text-size-adjust: none; }
.chroma .err { color: #f6f8fa; background-color: #82071e; }
.chroma .lnlinks { outline: none; text-decoration: none; color: inherit; }
.chroma .lntd { vertical-align: top; padding: 0; margin: 0; border: 0; }
.chroma .lntable { border-spacing: 0; padding: 0; margin: 0; border: 0; }
.chroma .hl { background-color: #dedede; }
.chroma .lnt { white-space: pre; -webkit-user-select: none; user-select: none; margin-right: 0.4em; padding: 0 0.4em; color: #7f7f7f; }
.chroma .ln { white-space: pre; -webkit-user-select: none; user-select: none; margin-right: 0.4em; padding: 0 0.4em; color: #7f7f7f; }
.chroma .line { display: flex; }
.chroma .k { color: #cf222e; }
.chroma .kc { color: #cf222e; }
.chroma .kd { color: #cf222e; }
.chroma .kn { color: #cf222e; }
.chroma .kp { color: #cf222e; }
.chroma .kr { color: #cf222e; }
.chroma .kt { color: #cf222e; }
.chroma .na { color: #1f2328; }
.chroma .nc { color: #1f2328; }
.chroma .no { color: #0550ae; }
.chroma .nd { color: #0550ae; }
.chroma .ni { color: #6639ba; }
.chroma .nl { color: #900; font-weight: bold; }
.chroma .nn { color: #24292e; }
.chroma .nx { color: #1f2328; }
.chroma .nt { color: #0550ae; }
.chroma .nb { color: #6639ba; }
.chroma .bp { color: #6a737d; }
.chroma .nv { color: #953800; }
.chroma .vc { color: #953800; }
.chroma .vg { color: #953800; }
.chroma .vi { color: #953800; }
.chroma .vm { color: #953800; }
.chroma .nf { color: #6639ba; }
.chroma .fm { color: #6639ba; }
.chroma .s { color: #0a3069; }
.chroma .sa { color: #0a3069; }
.chroma .sb { color: #0a3069; }
.chroma .sc { color: #0a3069; }
.chroma .dl { color: #0a3069; }
.chroma .sd { color: #0a3069; }
.chroma .s2 { color: #0a3069; }
.chroma .se { color: #0a3069; }
.chroma .sh { color: #0a3069; }
.chroma .si { color: #0a3069; }
.chroma .sx { color: #0a3069; }
.chroma .sr { color: #0a3069; }
.chroma .s1 { color: #0a3069; }
.chroma .ss { color: #032f62; }
.chroma .m { color: #0550ae; }
.chroma .mb { color: #0550ae; }
.chroma .mf { color: #0550ae; }
.chroma .mh { color: #0550ae; }
.chroma .mi { color: #0550ae; }
.chroma .il { color: #0550ae; }
.chroma .mo { color: #0550ae; }
.chroma .o { color: #0550ae; }
.chroma .ow { color: #0550ae; }
.chroma .or { color: #0550ae; }
.chroma .p { color: #1f2328; }
.chroma .c { color: #57606a; }
.chroma .ch { color: #57606a; }
.chroma .cm { color: #57606a; }
.chroma .c1 { color: #57606a; }
.chroma .cs { color: #57606a; }
.chroma .cp { color: #57606a; }
.chroma .cpf { color: #57606a; }
.chroma .gd { color: #82071e; background-color: #ffebe9; }
.chroma .ge { color: #1f2328; }
.chroma .gi { color: #116329; background-color: #dafbe1; }
.chroma .go { color: #1f2328; }
.chroma .gl { text-decoration: underline; }
.chroma .w { color: #fff; }

/* GitHub Dark token colors (applied when the OS prefers dark mode) */
@media (prefers-color-scheme: dark) {
  .chroma { color: #e6edf3; background-color: #0d1117; }
  .chroma .err { color: #f85149; }
  .chroma .hl { background-color: #6e7681; }
  .chroma .lnt { color: #737679; }
  .chroma .ln { color: #6e7681; }
  .chroma .k { color: #ff7b72; }
  .chroma .kc { color: #79c0ff; }
  .chroma .kd { color: #ff7b72; }
  .chroma .kn { color: #ff7b72; }
  .chroma .kp { color: #79c0ff; }
  .chroma .kr { color: #ff7b72; }
  .chroma .kt { color: #ff7b72; }
  .chroma .nc { color: #f0883e; font-weight: bold; }
  .chroma .no { color: #79c0ff; font-weight: bold; }
  .chroma .nd { color: #d2a8ff; font-weight: bold; }
  .chroma .ni { color: #ffa657; }
  .chroma .ne { color: #f0883e; font-weight: bold; }
  .chroma .nl { color: #79c0ff; font-weight: bold; }
  .chroma .nn { color: #ff7b72; }
  .chroma .nx { color: #e6edf3; }
  .chroma .py { color: #79c0ff; }
  .chroma .nt { color: #7ee787; }
  .chroma .nv { color: #79c0ff; }
  .chroma .vc { color: #79c0ff; }
  .chroma .vg { color: #79c0ff; }
  .chroma .vi { color: #79c0ff; }
  .chroma .vm { color: #79c0ff; }
  .chroma .nf { color: #d2a8ff; font-weight: bold; }
  .chroma .fm { color: #d2a8ff; font-weight: bold; }
  .chroma .l { color: #a5d6ff; }
  .chroma .ld { color: #79c0ff; }
  .chroma .s { color: #a5d6ff; }
  .chroma .sa { color: #79c0ff; }
  .chroma .sb { color: #a5d6ff; }
  .chroma .sc { color: #a5d6ff; }
  .chroma .dl { color: #79c0ff; }
  .chroma .sd { color: #a5d6ff; }
  .chroma .s2 { color: #a5d6ff; }
  .chroma .se { color: #79c0ff; }
  .chroma .sh { color: #79c0ff; }
  .chroma .si { color: #a5d6ff; }
  .chroma .sx { color: #a5d6ff; }
  .chroma .sr { color: #79c0ff; }
  .chroma .s1 { color: #a5d6ff; }
  .chroma .ss { color: #a5d6ff; }
  .chroma .m { color: #a5d6ff; }
  .chroma .mb { color: #a5d6ff; }
  .chroma .mf { color: #a5d6ff; }
  .chroma .mh { color: #a5d6ff; }
  .chroma .mi { color: #a5d6ff; }
  .chroma .il { color: #a5d6ff; }
  .chroma .mo { color: #a5d6ff; }
  .chroma .o { color: #ff7b72; font-weight: bold; }
  .chroma .ow { color: #ff7b72; font-weight: bold; }
  .chroma .or { color: #ff7b72; font-weight: bold; }
  .chroma .c { color: #8b949e; font-style: italic; }
  .chroma .ch { color: #8b949e; font-style: italic; }
  .chroma .cm { color: #8b949e; font-style: italic; }
  .chroma .c1 { color: #8b949e; font-style: italic; }
  .chroma .cs { color: #8b949e; font-weight: bold; font-style: italic; }
  .chroma .cp { color: #8b949e; font-weight: bold; font-style: italic; }
  .chroma .cpf { color: #8b949e; font-weight: bold; font-style: italic; }
  .chroma .gd { color: #ffa198; background-color: #490202; }
  .chroma .ge { font-style: italic; }
  .chroma .gr { color: #ffa198; }
  .chroma .gh { color: #79c0ff; font-weight: bold; }
  .chroma .gi { color: #56d364; background-color: #0f5323; }
  .chroma .go { color: #8b949e; }
  .chroma .gp { color: #8b949e; }
  .chroma .gs { font-weight: bold; }
  .chroma .gu { color: #79c0ff; }
  .chroma .gt { color: #ff7b72; }
  .chroma .gl { text-decoration: underline; }
  .chroma .w { color: #6e7681; }
}

/* media + figures */
img, iframe, video { max-width: 100%; }
img { height: auto; }
figure { margin: 1em 0; text-align: center; }
figcaption { font-size: 0.85em; color: var(--muted); margin-top: 0.3em; }
main { hyphens: auto; }

/* blockquote */
blockquote {
  background: var(--soft);
  border-left: 4px solid var(--border);
  padding: 0.5em 1em;
  margin: 1em 0;
  color: var(--muted);
}

/* tables */
table {
  margin: auto;
  border-collapse: collapse;
  border-top: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
}
table thead th { border-bottom: 1px solid var(--border); }
th, td { padding: 0.5em 0.75em; }
thead, tfoot, tr:nth-child(even) { background: var(--soft); }

/* mobile */
@media (max-width: 600px) {
  body { padding: 1em 0.75em; }
  .menu li { margin-right: 1.1em; }
  .post-list li { gap: 0.75em; }
  .post-list .date { flex-basis: auto; }
}