/* ── Reset & base ──────────────────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Color scheme ──────────────────────────────────────────────── */

:root {
  --bg:       #f3f7f9;
  --fg:       #11212a;
  --muted:    #5e717d;
  --accent:   #0ea56b;
  --accent-visited: #0b8f5d;
  --border:   #d8e1e7;
  --code-bg:  #eaf1f5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:       #0f1b21;
    --fg:       #d8e6ed;
    --muted:    #92a6b1;
    --accent:   #34d399;
    --accent-visited: #2fba87;
    --border:   #263740;
    --code-bg:  #17272f;
  }
}

/* ── Typography ────────────────────────────────────────────────── */

body {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino,
               Georgia, "Times New Roman", serif;
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--fg);
  background: var(--bg);

  /* Ligatures & OpenType features */
  font-feature-settings: "liga" 1, "clig" 1, "dlig" 1, "kern" 1,
                          "onum" 1, "pnum" 1;
  font-variant-ligatures: common-ligatures discretionary-ligatures;
  font-variant-numeric: oldstyle-nums proportional-nums;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ────────────────────────────────────────────────────── */

main {
  max-width: 38rem;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

/* ── Header ────────────────────────────────────────────────────── */

.site-header {
  border-bottom: 1px solid var(--border);
}

.site-header nav {
  max-width: 38rem;
  margin: 0 auto;
  padding: 1.25rem 1.25rem;
}

.site-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--fg);
}

.nav-link {
  float: right;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--muted);
  line-height: 1.35rem;
  padding-top: 0.15em;
  margin-left: 1.25rem;
}

.nav-link:hover {
  color: var(--accent);
}

/* ── Home page ─────────────────────────────────────────────────── */

.home-intro {
  margin-bottom: 2.5rem;
}

.home-intro p {
  margin-bottom: 0.5rem;
  color: var(--muted);
}

.home-intro p:first-child {
  font-style: italic;
  font-size: 1.15rem;
  color: var(--fg);
}

.home-intro a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
}

.home-intro a:hover {
  opacity: 0.75;
}

.home-intro a:visited {
  color: var(--accent-visited);
  border-bottom-color: var(--accent-visited);
}

.post-list-heading {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 1rem;
  font-weight: 400;
}

.post-list {
  list-style: none;
}

.post-list li {
  margin-bottom: 0.75rem;
}

.post-list time {
  display: inline-block;
  width: 10rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums lining-nums;
}

.post-list a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.post-language {
  display: inline-block;
  margin-right: 0.25rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums lining-nums;
}

.post-list a:visited {
  color: var(--accent-visited);
}

.post-list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

@media (max-width: 32rem) {
  .post-list time {
    display: block;
    width: auto;
    margin-bottom: 0.15rem;
  }
}

/* ── Post ──────────────────────────────────────────────────────── */

.post-header {
  margin-bottom: 2rem;
}

.post-header h1 {
  font-size: 2rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 0.25rem;
}

.post-header time {
  color: var(--muted);
  font-size: 0.9rem;
}

.post-content {
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content h2 {
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.post-content h3 {
  font-size: 1.15rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.post-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
}

.post-content a:hover {
  opacity: 0.75;
}

.post-content a:visited {
  color: var(--accent-visited);
  border-bottom-color: var(--accent-visited);
}

.post-content blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1.25rem;
  color: var(--muted);
  font-style: italic;
  margin: 1.5rem 0;
}

.post-content ul,
.post-content ol {
  margin: 1.25rem 0;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.35rem;
}

.post-content dl {
  margin: 1.25rem 0;
}

.post-content dt {
  font-weight: 700;
  margin-top: 0.75rem;
}

.post-content dd {
  margin-left: 1.5rem;
  margin-bottom: 0.5rem;
}

.post-content code {
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
  background: var(--code-bg);
  padding: 0.15em 0.35em;
  border-radius: 3px;
}

.post-content pre {
  background: var(--code-bg);
  padding: 1rem 1.25rem;
  border-radius: 4px;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.5;
}

.post-content pre code {
  background: none;
  padding: 0;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Dropcap (first post paragraph) ────────────────────────────── */

.post-content > p:first-child::first-letter {
  font-size: 3.5em;
  float: left;
  line-height: 0.8;
  padding-right: 0.08em;
  margin-top: 0.05em;
  font-weight: 700;
  color: var(--accent);
}

/* ── Footer ────────────────────────────────────────────────────── */

footer {
  max-width: 38rem;
  margin: 2rem auto 0;
  padding: 1.5rem 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-title {
  margin-right: 1.25rem;
}

footer a {
  color: var(--muted);
  text-decoration: none;
  margin-right: 1.25rem;
}

footer a:hover {
  color: var(--accent);
}

/* ── Syntax highlighting (light) ───────────────────────────────── */

.highlight .c, .highlight .ch, .highlight .cd, .highlight .cm,
.highlight .cpf, .highlight .c1, .highlight .cs { color: #8e8e8e; font-style: italic; }
.highlight .k, .highlight .kn, .highlight .kp, .highlight .kr,
.highlight .kv, .highlight .kd, .highlight .kc          { color: #7928a1; }
.highlight .s, .highlight .sb, .highlight .sc, .highlight .dl,
.highlight .sd, .highlight .s2, .highlight .sh, .highlight .sx,
.highlight .s1, .highlight .sa                           { color: #22713d; }
.highlight .m, .highlight .mb, .highlight .mf, .highlight .mh,
.highlight .mi, .highlight .il, .highlight .mo, .highlight .mx { color: #1c6b8a; }
.highlight .nf, .highlight .fm                           { color: #1c6b8a; }
.highlight .nn, .highlight .nc, .highlight .no            { color: #b35e14; }
.highlight .o, .highlight .ow                             { color: #555; }
.highlight .p, .highlight .pi                             { color: #333; }
.highlight .si, .highlight .se                            { color: #b35e14; }
.highlight .sr                                            { color: #1c6b8a; }
.highlight .ss                                            { color: #22713d; }
.highlight .err { color: #c00; }
.highlight .cp, .highlight .nt                            { color: #b35e14; }
.highlight .na                                            { color: #1c6b8a; }

/* ── Syntax highlighting (dark) ────────────────────────────────── */

@media (prefers-color-scheme: dark) {
  .highlight .c, .highlight .ch, .highlight .cd, .highlight .cm,
  .highlight .cpf, .highlight .c1, .highlight .cs { color: #777; }
  .highlight .k, .highlight .kn, .highlight .kp, .highlight .kr,
  .highlight .kv, .highlight .kd, .highlight .kc          { color: #c792ea; }
  .highlight .s, .highlight .sb, .highlight .sc, .highlight .dl,
  .highlight .sd, .highlight .s2, .highlight .sh, .highlight .sx,
  .highlight .s1, .highlight .sa                           { color: #a5d6a7; }
  .highlight .m, .highlight .mb, .highlight .mf, .highlight .mh,
  .highlight .mi, .highlight .il, .highlight .mo, .highlight .mx { color: #82aaff; }
  .highlight .nf, .highlight .fm                           { color: #82aaff; }
  .highlight .nn, .highlight .nc, .highlight .no            { color: #7ee787; }
  .highlight .o, .highlight .ow                             { color: #bbb; }
  .highlight .p, .highlight .pi                             { color: #ccc; }
  .highlight .si, .highlight .se                            { color: #7ee787; }
  .highlight .sr                                            { color: #82aaff; }
  .highlight .ss                                            { color: #a5d6a7; }
  .highlight .err { color: #ff5370; }
  .highlight .cp, .highlight .nt                            { color: #7ee787; }
  .highlight .na                                            { color: #82aaff; }
}

/* ── Print ─────────────────────────────────────────────────────── */

@media print {
  body { font-size: 12pt; color: #000; background: #fff; }
  .site-header, footer { display: none; }
  a { color: inherit; border: none; }
}