/* Specworks */
:root {
  --bg: #faf9f6;
  --ink: #1d2024;
  --muted: #5f6670;
  --rule: #e4e0d7;
  --accent: #2b5e64;
  --accent-soft: #e8f0ef;
  --warn-soft: #f6ede6;
  --code-bg: #f1efe9;
  --measure: 40rem;
  color-scheme: light;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 1.0625rem/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

.skip { position: absolute; left: -999px; top: 0; padding: .5rem 1rem; background: var(--ink); color: #fff; }
.skip:focus { left: 1rem; top: 1rem; z-index: 10; }

.site-header, main, .site-footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.75rem;
  padding-bottom: 1.75rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -.01em;
  color: var(--ink);
  text-decoration: none;
}
.mark { width: 1.6rem; height: 1.6rem; flex: none; }
.mark rect { fill: var(--accent); }
.mark path { stroke: #fff; stroke-width: 2.6; stroke-linecap: round; fill: none; }
.site-header nav { display: flex; gap: 1.25rem; font-size: .95rem; }
.site-header nav a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover, .site-header nav a[aria-current="page"] { color: var(--ink); }
.site-header nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }

/* Typography */
h1, h2, h3 { line-height: 1.25; letter-spacing: -.015em; font-weight: 680; }
h1 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.25rem); margin: 0 0 1rem; }
h2 { font-size: 1.3rem; margin: 2.4rem 0 .6rem; }
h3 { font-size: 1.1rem; margin: 0; }
p, ul, ol, pre { margin: 0 0 1.1rem; }
ul, ol { padding-left: 1.4rem; }
li { margin-bottom: .4rem; }
li::marker { color: var(--muted); }
strong { font-weight: 650; }

.lede { font-size: 1.15rem; color: #2f343a; }

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: .875rem;
}
pre {
  background: var(--code-bg);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.55;
}

/* Home */
.intro { padding: 1rem 0 1.5rem; border-bottom: 1px solid var(--rule); }
.intro p { color: var(--muted); font-size: 1.1rem; max-width: 34rem; }
.intro h2, #latest {
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  font-weight: 600;
  margin: 2rem 0 .5rem;
}
.note-list { list-style: none; padding: 0; margin: 0; }
.note-list li { padding: 1.25rem 0; border-bottom: 1px solid var(--rule); margin: 0; }
.note-list time { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .2rem; font-variant-numeric: tabular-nums; }
.note-list h3 a { color: var(--ink); text-decoration: none; }
.note-list h3 a:hover { color: var(--accent); text-decoration: underline; }
.note-list p { margin: .35rem 0 0; color: var(--muted); }
.start { margin-top: 1.75rem; color: var(--muted); }

/* Article */
.note { padding-top: .5rem; }
.note > header { margin-bottom: 1.5rem; }
.meta { font-size: .875rem; color: var(--muted); margin-bottom: .5rem; }

.compare { margin: 0 0 1.4rem; display: grid; gap: .6rem; }
.compare > * { margin: 0; padding: .8rem 1rem; border-radius: 6px; border-left: 3px solid; }
.compare span {
  display: block;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 650;
  margin-bottom: .25rem;
}
.compare .bad { background: var(--warn-soft); border-color: #c58b62; }
.compare .bad span { color: #8a5634; }
.compare .good { background: var(--accent-soft); border-color: var(--accent); }
.compare .good span { color: var(--accent); }
.compare ol { margin: 0; }

.pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}
.pager a { text-decoration: none; max-width: 48%; color: var(--ink); }
.pager a:hover { color: var(--accent); }
.pager span { display: block; font-size: .8rem; color: var(--muted); }
.pager .next { margin-left: auto; text-align: right; }

/* 404 */
.notfound { padding: 3rem 0 2rem; }
.notfound .code { font-size: 3.5rem; font-weight: 700; color: var(--rule); margin: 0; line-height: 1; letter-spacing: -.03em; }

/* Footer */
.site-footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
  font-size: .85rem;
  color: var(--muted);
}
.site-footer p { margin: 0; border-top: 1px solid var(--rule); padding-top: 1.25rem; }

@media (max-width: 30rem) {
  body { font-size: 1rem; }
  .site-header { padding-top: 1.25rem; padding-bottom: 1.25rem; }
  .pager { flex-direction: column; }
  .pager a { max-width: none; }
  .pager .next { margin-left: 0; text-align: left; }
}

@media print {
  .site-header nav, .pager, .skip { display: none; }
  body { background: #fff; }
}

/* Product cycle on the home page */
.phases { display: grid; gap: 1.25rem; margin: 2rem 0 0; }
.phase {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 1.25rem 1.25rem .5rem;
  background: #fff;
}
.phase h2 { margin: 0; font-size: 1.2rem; }
.phase-sub { color: var(--muted); margin: .15rem 0 1rem; font-size: .95rem; }
.steps { list-style: none; padding: 0; margin: 0; counter-reset: step; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: .9rem 0 .9rem 2.6rem;
  border-top: 1px solid var(--rule);
  margin: 0;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: .95rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 650;
  font-size: .85rem;
  display: grid;
  place-items: center;
}
.steps a { font-weight: 620; color: var(--ink); text-decoration: none; }
.steps a:hover { color: var(--accent); text-decoration: underline; }
.steps p { margin: .2rem 0 0; color: var(--muted); font-size: .95rem; }
.loop { margin-top: 1.5rem; color: var(--muted); }
.intro { border-bottom: 0; padding-bottom: 0; }

/* Note meta */
.phase-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  font-size: .75rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .1rem .5rem;
  border-radius: 4px;
  margin-right: .5rem;
}
cite { font-style: italic; }
ul ul { margin: .4rem 0 0; }