/* wiseworks — one visual language across the site: paper background, slate
   ink, a single drafting-blue accent, monospace for the wordmark, dates, and
   labels. The display face IS the monospace, used with restraint. */

:root {
  --paper:       #f6f6f2;
  --card:        #fffffe;
  --ink:         #1b222b;
  --ink-soft:    #5c6675;
  --ink-faint:   #8a93a0;
  --line:        #e4e4dc;
  --accent:      #1f5673;
  --accent-ink:  #16425b;
  --accent-wash: #e8f0f4;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:       #15171a;
    --card:        #1d2024;
    --ink:         #e6e8ea;
    --ink-soft:    #a3abb5;
    --ink-faint:   #6f7882;
    --line:        #2a2e34;
    --accent:      #5aa9d0;
    --accent-ink:  #7bc0e3;
    --accent-wash: #1e2a33;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  background: var(--paper); color: var(--ink);
  font-family: var(--sans); line-height: 1.6; -webkit-font-smoothing: antialiased;
}

/* header / footer shells */
.site-head { max-width: 680px; width: 100%; margin: 0 auto; padding: 1.5rem 1.5rem 0; }
.mark { font-family: var(--mono); font-weight: 600; font-size: 1rem;
  letter-spacing: -.02em; color: var(--ink); text-decoration: none; }
a.mark:hover { color: var(--accent); }
.wrap { max-width: 680px; width: 100%; margin: 0 auto; padding: 0 1.5rem; flex: 1; }
.site-foot { max-width: 680px; width: 100%; margin: 0 auto;
  padding: 2.5rem 1.5rem; border-top: 1px solid var(--line);
  display: flex; align-items: baseline; gap: .7rem; flex-wrap: wrap; }
.foot-mark { font-family: var(--mono); font-weight: 600; font-size: .85rem; color: var(--ink); }
.foot-meta { font-family: var(--mono); font-size: .75rem; color: var(--ink-faint); }

/* hero */
.hero { padding: 4rem 0 2.5rem; }
.eyebrow { font-family: var(--mono); font-size: .8rem; color: var(--accent); margin: 0 0 1.1rem; }
.headline { font-size: clamp(2rem, 6vw, 2.7rem); line-height: 1.1;
  letter-spacing: -.025em; font-weight: 650; margin: 0 0 .9rem; }
.sub { font-size: 1.05rem; color: var(--ink-soft); margin: 0; max-width: 42ch; }
.cursor { display: inline-block; width: .6ch; height: 1.1em; margin-left: .15em;
  background: var(--accent); vertical-align: text-bottom; animation: blink 1.1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* section label */
.section-label { font-family: var(--mono); font-size: .74rem; text-transform: uppercase;
  letter-spacing: .14em; color: var(--ink-faint); margin: 0 0 .5rem;
  padding-bottom: .6rem; border-bottom: 1px solid var(--line); }

/* writing list */
.writing { padding-bottom: 3rem; }
.post-list { list-style: none; margin: 0; padding: 0; }
.post-item { border-bottom: 1px solid var(--line); }
.post-link { display: grid; grid-template-columns: 7rem 1fr; gap: 1rem;
  padding: 1.1rem .25rem; text-decoration: none; color: inherit; transition: background .12s; }
.post-link:hover { background: var(--accent-wash); }
.post-date { font-family: var(--mono); font-size: .8rem; color: var(--ink-faint); padding-top: .15rem; }
.post-text { display: flex; flex-direction: column; gap: .2rem; }
.post-title { font-size: 1.1rem; font-weight: 600; letter-spacing: -.01em; }
.post-summary { font-size: .92rem; color: var(--ink-soft); }
.empty { color: var(--ink-soft); }
.empty code, .post-summary code { font-family: var(--mono); font-size: .85em;
  background: var(--accent-wash); padding: .05rem .3rem; border-radius: 4px; }

/* article */
.back { font-family: var(--mono); font-size: .8rem; color: var(--ink-soft);
  text-decoration: none; display: inline-block; margin: .25rem 0 2rem; }
.back:hover { color: var(--accent); }
.article { padding-bottom: 3rem; }
.article-date { font-family: var(--mono); font-size: .8rem; color: var(--ink-faint); margin: 0 0 .6rem; }
.article-title { font-size: clamp(1.8rem, 5vw, 2.4rem); line-height: 1.15;
  letter-spacing: -.025em; font-weight: 650; margin: 0 0 2rem; }

/* rendered Markdown body */
.article-body { font-size: 1.05rem; color: var(--ink); max-width: 64ch; }
.article-body p { margin: 0 0 1.2rem; }
.article-body h2 { font-size: 1.35rem; letter-spacing: -.01em; margin: 2.2rem 0 .8rem; }
.article-body h3 { font-size: 1.1rem; margin: 1.8rem 0 .6rem; }
.article-body ul, .article-body ol { margin: 0 0 1.2rem; padding-left: 1.3rem; }
.article-body li { margin: .3rem 0; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--accent-ink); }
.article-body blockquote { margin: 1.4rem 0; padding: .2rem 0 .2rem 1.1rem;
  border-left: 3px solid var(--accent); color: var(--ink-soft); font-style: italic; }
.article-body code { font-family: var(--mono); font-size: .88em;
  background: var(--accent-wash); padding: .1rem .35rem; border-radius: 4px; }
.article-body pre { background: var(--card); border: 1px solid var(--line);
  border-radius: 8px; padding: 1rem; overflow-x: auto; margin: 0 0 1.4rem; }
.article-body pre code { background: none; padding: 0; font-size: .85rem; }
.article-body img { max-width: 100%; border-radius: 8px; }
.article-body hr { border: none; border-top: 1px solid var(--line); margin: 2rem 0; }

/* responsive */
@media (max-width: 540px) {
  .hero { padding: 3rem 0 2rem; }
  .post-link { grid-template-columns: 1fr; gap: .25rem; }
}

/* a11y */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }