/* Harness Watch — site stylesheet */

:root {
  --bg: #ffffff;
  --surface: #fbfbfa;
  --ink: #1b1b1f;
  --ink-soft: #3d3d43;
  --ink-faint: #6e6e75;
  --rule: #d9d9d4;
  --hairline: #e9e9e5;
  --accent: #1f3a5f;
  --accent-soft: #f2f5f9;
  --code-bg: #f6f6f4;
  --code-ink: #2d2d31;
  --danger: #8c2b23;
  --danger-soft: #faf1f0;
  --ok: #2b6b3f;
  --ok-soft: #eff5f1;
  --warn-soft: #faf7ec;
  --serif: "Iowan Old Style", "Palatino Linotype", "Palatino", "Charter", "Georgia", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}

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

html { font-size: 17px; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 0.15em; }

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.4rem;
}

/* ---------- Masthead ---------- */

.topbar {
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--hairline);
}

.masthead {
  border-bottom: 1px solid var(--ink);
  position: relative;
  padding: 2.8rem 0 1.6rem;
  text-align: center;
}
.masthead::after {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  border-bottom: 1px solid var(--ink);
}

.masthead .brand {
  font-family: var(--serif);
  font-size: 2.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink);
  text-transform: uppercase;
}
.masthead .brand a { color: inherit; }
.masthead .brand a:hover { text-decoration: none; }

.masthead .tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--ink-faint);
  margin-top: 0.5rem;
}

/* ---------- Front page ---------- */

.section-label {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 3rem 0 1.3rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.section-label::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--hairline);
}

.lead-story { padding-bottom: 2.2rem; }

.kicker {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.7rem;
}

.lead-story h2 {
  font-size: 1.95rem;
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.005em;
  margin-bottom: 0.85rem;
}
.lead-story h2 a { color: var(--ink); }
.lead-story h2 a:hover { color: var(--accent); text-decoration: none; }

.dek {
  font-size: 1.05rem;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.byline {
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}
.byline b { color: var(--ink-soft); font-weight: 600; }

.readmore {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-top: 0.4rem;
}

.about-box {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--ink);
  padding: 1.5rem 1.7rem;
  margin: 1rem 0 3rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}
.about-box h3 {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.7rem;
}

/* ---------- Article ---------- */

article.post { padding: 2.8rem 0 1rem; }

article.post h1 {
  font-size: 2.25rem;
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0.8rem 0 1rem;
}

article.post .dek {
  font-size: 1.14rem;
  font-style: italic;
  margin-bottom: 1.5rem;
}

.article-meta {
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 0.7rem 0;
  margin-bottom: 2.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
}
.article-meta b { color: var(--ink-soft); font-weight: 600; }

article.post h2 {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.28;
  margin: 2.8rem 0 0.9rem;
}

article.post h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 2.1rem 0 0.7rem;
}

article.post p { margin-bottom: 1.1rem; }
article.post ul, article.post ol { margin: 0 0 1.1rem 1.5rem; }
article.post li { margin-bottom: 0.5rem; }

article.post blockquote {
  border-left: 2px solid var(--rule);
  padding: 0.2rem 0 0.2rem 1.3rem;
  margin: 1.5rem 0 1.5rem 0.2rem;
  font-size: 1rem;
  font-style: italic;
  color: var(--ink-soft);
}
article.post blockquote p:last-child { margin-bottom: 0; }
blockquote .attribution {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--ink-faint);
  font-style: normal;
}

/* code */
code {
  font-family: var(--mono);
  font-size: 0.84em;
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 1rem 1.2rem;
  margin: 1.4rem 0;
  overflow-x: auto;
  line-height: 1.55;
}
pre code {
  background: none;
  padding: 0;
  font-size: 0.8rem;
  display: block;
}
pre .cmt { color: var(--ink-faint); }
pre .bad { color: var(--danger); font-weight: 600; }

/* callouts */
.callout {
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 1.1rem 1.3rem;
  margin: 1.6rem 0;
  font-size: 0.95rem;
}
.callout .callout-title {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
  display: block;
}
.callout.summary { background: var(--surface); border-top: 2px solid var(--ink); }
.callout.summary .callout-title { color: var(--ink); }
.callout.danger { background: var(--danger-soft); border-color: #ecdad8; }
.callout.danger .callout-title { color: var(--danger); }
.callout.note { background: var(--warn-soft); border-color: #ebe5d2; }
.callout.note .callout-title { color: var(--ink-soft); }
.callout p:last-child { margin-bottom: 0; }

/* failure-chain steps */
.chain { margin: 1.7rem 0; }
.chain .step {
  display: flex;
  gap: 1.1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--hairline);
}
.chain .step:last-child { border-bottom: 1px solid var(--hairline); }
.chain .num {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--accent);
  min-width: 1.6rem;
  padding-top: 0.15rem;
}
.chain .step.fatal .num { color: var(--danger); }
.chain .body { font-size: 0.95rem; color: var(--ink-soft); }
.chain .body b { color: var(--ink); }

/* layered-defense table */
.deftable {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 0.84rem;
  margin: 1.5rem 0;
}
.deftable th {
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--ink);
  padding: 0.5rem 0.75rem 0.5rem 0;
}
.deftable td {
  border-bottom: 1px solid var(--hairline);
  padding: 0.7rem 0.75rem 0.7rem 0;
  vertical-align: top;
  color: var(--ink-soft);
}
.deftable td:first-child { color: var(--ink); font-weight: 600; white-space: nowrap; }
.status {
  font-weight: 600;
  font-size: 0.76rem;
  padding: 0.1rem 0.5rem;
  border: 1px solid transparent;
  border-radius: 2px;
  white-space: nowrap;
}
.status.off { background: var(--danger-soft); color: var(--danger); border-color: #ecdad8; }
.status.na { background: var(--code-bg); color: var(--ink-faint); border-color: var(--hairline); }

.table-scroll { overflow-x: auto; }

/* footer */
footer.site {
  border-top: 1px solid var(--ink);
  margin-top: 3.8rem;
  padding: 1.6rem 0 2.6rem;
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--ink-faint);
  text-align: center;
  line-height: 1.8;
}

hr.sep {
  border: none;
  margin: 2.6rem auto;
  text-align: center;
}
hr.sep::after {
  content: "· · ·";
  color: var(--ink-faint);
  letter-spacing: 0.6em;
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  html { font-size: 16px; }
  .masthead .brand { font-size: 1.8rem; letter-spacing: 0.08em; }
  article.post h1 { font-size: 1.7rem; }
  .lead-story h2 { font-size: 1.5rem; }
}