/* Harness Engineering doctrine — shared doc styles.
   Canonical mirror target: ~/publications/.shared-assets/style.css */

:root {
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --paper: #fbfaf7;
  --rule: #d9d4c8;
  --accent: #5b4b8a;
  --accent-soft: #efeaf6;
  --code-bg: #f2efe8;
  --warn: #8a4b4b;
  --good: #3f6b4a;
  --max: 46rem;
}

* { box-sizing: border-box; }

html { font-size: 17px; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  line-height: 1.62;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 3.5rem 1.4rem 6rem; }

.doc-meta {
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1.1rem;
  margin-bottom: 2.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
}
.doc-meta b { color: var(--ink); font-weight: 600; }

h1 {
  font-size: 2.15rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.3rem;
}
.subtitle { color: var(--ink-soft); font-style: italic; margin: 0 0 2rem; }

h2 {
  font-size: 1.5rem;
  margin: 3rem 0 0.2rem;
  padding-top: 1.6rem;
}
h2::before {
  content: "";
  display: block;
  width: 100%;
  height: 12px;
  margin-bottom: 1.2rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='12' viewBox='0 0 120 12'%3E%3Cpath d='M0 6 Q15 0 30 6 T60 6 T90 6 T120 6' fill='none' stroke='%23d9d4c8' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-position: left center;
}
h3 { font-size: 1.16rem; margin: 2rem 0 0.3rem; }

p, li { color: var(--ink); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

nav.toc {
  background: var(--accent-soft);
  border-radius: 10px;
  padding: 1.2rem 1.5rem 1.3rem;
  margin: 0 0 2.5rem;
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: 0.95rem;
}
nav.toc strong { display: block; margin-bottom: 0.5rem; letter-spacing: 0.03em; text-transform: uppercase; font-size: 0.78rem; color: var(--accent); }
nav.toc ol { margin: 0; padding-left: 1.2rem; }
nav.toc li { margin: 0.22rem 0; }
nav.toc a { text-decoration: none; }
nav.toc a:hover { text-decoration: underline; }

blockquote {
  margin: 1.4rem 0;
  padding: 0.6rem 1.2rem;
  border-left: 3px solid var(--accent);
  background: #fff;
  color: var(--ink-soft);
  font-style: italic;
}

code {
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.86em;
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}
pre {
  background: var(--code-bg);
  padding: 1rem 1.2rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.5;
}
pre code { background: none; padding: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: 0.9rem;
}
th, td { text-align: left; padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { background: var(--accent-soft); color: var(--accent); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
tbody tr:nth-child(even) { background: #fff; }

.callout {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 1rem 1.3rem;
  margin: 1.6rem 0;
  background: #fff;
}
.callout.warn { border-color: var(--warn); background: #fbf3f3; }
.callout.warn b { color: var(--warn); }
.callout.good { border-color: var(--good); background: #f2f7f3; }

ul.checklist { list-style: none; padding-left: 0.2rem; }
ul.checklist li { padding-left: 1.7rem; position: relative; margin: 0.35rem 0; }
ul.checklist li::before {
  content: "\2610";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 1.1rem;
  line-height: 1.4;
}

.pill { display: inline-block; font-family: -apple-system, system-ui, sans-serif; font-size: 0.72rem; padding: 0.08rem 0.5rem; border-radius: 20px; background: var(--accent-soft); color: var(--accent); letter-spacing: 0.02em; }

hr.wave {
  border: none;
  height: 12px;
  margin: 3rem 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='12' viewBox='0 0 120 12'%3E%3Cpath d='M0 6 Q15 0 30 6 T60 6 T90 6 T120 6' fill='none' stroke='%23d9d4c8' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-position: center;
}

footer.doc-foot { margin-top: 4rem; padding-top: 1.4rem; border-top: 1px solid var(--rule); font-size: 0.82rem; color: var(--ink-soft); font-family: -apple-system, system-ui, sans-serif; }

@media (max-width: 640px) { html { font-size: 16px; } .wrap { padding: 2rem 1rem 4rem; } }

@media print {
  body { background: #fff; color: #000; }
  nav.toc { border: 1px solid #ccc; background: #f7f7f7; }
  h2 { page-break-after: avoid; }
  pre, table, blockquote, .callout { page-break-inside: avoid; }
  a { color: #000; text-decoration: none; }
  .no-print { display: none; }
}