/* ---------------------------------------------------------------
   Shared styles for the writing archive.
   Tokens match index.html so the resume and the articles read as
   one site. If you change a colour there, change it here too.
   --------------------------------------------------------------- */
:root {
  --bg:          #fcfcfa;
  --bg-inset:    #f2f1ec;
  --text:        #1a1a18;
  --text-muted:  #5c5c56;
  --rule:        #dedcd4;
  --rule-strong: #c6c3b8;
  --accent:      #9c3d17;
  --accent-soft: rgba(156, 61, 23, 0.10);

  --font-sans: "IBM Plex Sans", ui-sans-serif, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, "SF Mono",
               Menlo, Consolas, monospace;

  --measure: 720px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:          #131313;
    --bg-inset:    #1c1c1b;
    --text:        #ecece6;
    --text-muted:  #9a9a92;
    --rule:        #2e2e2c;
    --rule-strong: #454541;
    --accent:      #e8916a;
    --accent-soft: rgba(232, 145, 106, 0.14);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg:          #131313;
  --bg-inset:    #1c1c1b;
  --text:        #ecece6;
  --text-muted:  #9a9a92;
  --rule:        #2e2e2c;
  --rule-strong: #454541;
  --accent:      #e8916a;
  --accent-soft: rgba(232, 145, 106, 0.14);
  color-scheme: dark;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 180ms ease, color 180ms ease;
}

@media (min-width: 40em) { body { font-size: 17px; } }

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

@media (min-width: 40em) { .wrap { padding: 3rem 2rem 6rem; } }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  transition: border-color 140ms ease, color 140ms ease;
}

a:hover { border-bottom-color: currentColor; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus {
  left: 1rem; top: 1rem; z-index: 10;
  padding: 0.5rem 0.85rem;
  background: var(--bg-inset);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  color: var(--text);
}

/* --- Header ------------------------------------------------------ */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--rule);
}

.backlink {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: none;
}

.backlink::before { content: "\2190"; margin-right: 0.5rem; }
.backlink:hover { color: var(--accent); }

.toggle {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--rule);
  border-radius: 3px;
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease, background-color 140ms ease;
}

.toggle:hover {
  color: var(--accent);
  border-color: var(--rule-strong);
  background: var(--bg-inset);
}

.toggle svg { width: 16px; height: 16px; display: block; }
.toggle .moon { display: none; }
:root[data-theme="dark"] .toggle .moon { display: block; }
:root[data-theme="dark"] .toggle .sun { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .toggle .moon { display: block; }
  :root:not([data-theme="light"]) .toggle .sun { display: none; }
}

/* --- Archive index ----------------------------------------------- */
.page-head h1 {
  margin: 2.5rem 0 0;
  font-size: clamp(1.85rem, 7vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.2;
}

.lede {
  margin: 1rem 0 0;
  max-width: 34em;
  color: var(--text-muted);
}

.group { margin-top: 3.25rem; }

.group h2 {
  margin: 0 0 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

ul.entries { margin: 0; padding: 0; list-style: none; }

ul.entries > li {
  padding: 1.15rem 0;
  border-top: 1px solid var(--rule);
}

ul.entries > li:last-child { border-bottom: 1px solid var(--rule); }

a.entry {
  display: block;
  border-bottom: none;
  color: var(--text);
}

a.entry:hover .entry-title { color: var(--accent); }

.entry-title {
  display: block;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.008em;
  line-height: 1.35;
  transition: color 140ms ease;
}

/* Meta always sits below the title, so short and long titles align the same. */
.entry-meta {
  display: block;
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.entry-excerpt {
  margin: 0.35rem 0 0;
  font-size: 0.93rem;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 60ch;
}

.dot { padding: 0 0.4rem; color: var(--rule-strong); }

/* --- Article ----------------------------------------------------- */
.post h1 {
  margin: 2.5rem 0 0;
  font-size: clamp(1.7rem, 5.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.22;
  max-width: 22ch;
}

@media (min-width: 40em) { .post h1 { max-width: 24ch; } }

.post-meta {
  margin: 0.9rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.post-body {
  margin-top: 2.5rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--rule);
}

.post-body > *:first-child { margin-top: 0; }

.post-body p { margin: 0 0 1.15rem; }

.post-body h2 {
  margin: 2.5rem 0 0.9rem;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  line-height: 1.3;
}

.post-body h3 {
  margin: 2rem 0 0.75rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.post-body ul, .post-body ol { margin: 0 0 1.15rem; padding-left: 1.3rem; }
.post-body li { margin-bottom: 0.45rem; }
.post-body li::marker { color: var(--rule-strong); }

.post-body blockquote {
  margin: 1.5rem 0;
  padding: 0.15rem 0 0.15rem 1.15rem;
  border-left: 2px solid var(--accent-soft);
  color: var(--text-muted);
}

.post-body hr {
  margin: 2.5rem 0;
  border: 0;
  border-top: 1px solid var(--rule);
}

.post-body pre {
  margin: 0 0 1.4rem;
  padding: 0.9rem 1rem;
  background: var(--bg-inset);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow-x: auto;          /* wide code scrolls itself, page never does */
  -webkit-overflow-scrolling: touch;
}

.post-body pre code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  white-space: pre;
  color: var(--text);
}

.post-body :not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  padding: 0.12em 0.35em;
  background: var(--bg-inset);
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow-wrap: break-word;
}

.source {
  margin: 2.75rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Prev / next -------------------------------------------------- */
.prevnext-wrap {
  display: grid;
  gap: 0.75rem;
  margin-top: 2.5rem;
}

@media (min-width: 40em) {
  .prevnext-wrap { grid-template-columns: 1fr 1fr; }
  .prevnext.next:only-child { grid-column: 2; }
}

.prevnext {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.4;
  transition: border-color 140ms ease, color 140ms ease;
}

.prevnext:hover { border-color: var(--rule-strong); color: var(--accent); }

.prevnext .dir {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.prevnext.next { text-align: right; }

/* --- Footer ------------------------------------------------------- */
footer {
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

footer p { margin: 0; }
footer nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* --- Print -------------------------------------------------------- */
@media print {
  :root {
    --bg: #ffffff; --bg-inset: #ffffff; --text: #000000; --text-muted: #333333;
    --rule: #bbbbbb; --rule-strong: #999999; --accent: #000000; --accent-soft: transparent;
  }
  @page { margin: 14mm 15mm; }
  body { background: #ffffff; color: #000000; font-size: 10.5pt; line-height: 1.45; }
  .wrap { max-width: none; padding: 0; }
  .toggle, .skip, .prevnext-wrap, .backlink { display: none !important; }
  a { color: #000000; border-bottom: none; text-decoration: underline; }
  .masthead { border-bottom: none; padding-bottom: 0; }
  .post-body pre { background: transparent; border: 1px solid #999999; }
  h1, h2, h3 { break-after: avoid; page-break-after: avoid; }
  pre, blockquote, li { break-inside: avoid; page-break-inside: avoid; }
}