/* House Synergy blog (/blog/), built by tools/blog.py.
   Tokens, header, buttons and footer copy the home page, whose CSS is inline in index.html: keep the two in step.
   No JavaScript and no animation. The header is not sticky, so it never covers the focused link. */
:root {
  --bg: #15120e;
  --panel: #1f1b16;
  --fg: #f2ebdf;
  --mute: #a9a091;
  --line: #3a332a;
  --signal: #ffb02e;
  --signal-ink: #1a1408;
  --font-display: "Archivo Narrow", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-padding-block: 2rem; }   /* room for the focus ring when Tab scrolls a link into view */
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font-body); font-size: 1.0625rem; line-height: 1.6; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
a:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; }
main:focus { outline: none; }
.wrap { max-width: 78rem; margin: 0 auto; padding-inline: clamp(1rem, 4vw, 2.5rem); }
.mono { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
.k { color: var(--signal); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; text-transform: uppercase; line-height: .95; margin: 0; letter-spacing: -.005em; text-wrap: balance; }
p { margin: 0; max-width: 62ch; }
.btn { display: inline-flex; align-items: center; gap: .55rem; background: var(--signal); color: var(--signal-ink); font-weight: 800; text-decoration: none; padding: .8rem 1.15rem; font-size: .95rem; border: 0; font-family: var(--font-body); }
.btn.ghost { background: transparent; color: var(--fg); box-shadow: inset 0 0 0 1px var(--line); }
.btn.ghost:hover { box-shadow: inset 0 0 0 1px var(--mute); }

/* skip link: off screen until focused */
.skip { position: absolute; left: 1rem; top: -10rem; z-index: 20; background: var(--signal); color: var(--signal-ink); font-weight: 800; padding: .7rem 1rem; text-decoration: none; }
.skip:focus { top: 1rem; }

/* header (as the home page; links padded to at least 24px tall) */
header.site { border-bottom: 1px solid var(--line); background: var(--bg); }
header.site .wrap { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; padding-block: .9rem; }
.brand { display: flex; align-items: center; gap: .9rem; text-decoration: none; padding-block: .2rem; }
.brand .hs { font-family: var(--font-display); font-weight: 700; letter-spacing: .16em; text-transform: uppercase; font-size: 1.05rem; }
.brand .hs span { color: var(--signal); }
nav.main { display: flex; gap: .2rem 1.4rem; flex-wrap: wrap; }
nav.main a { display: inline-block; padding-block: .3rem; text-decoration: none; color: var(--mute); }
nav.main a:hover { color: var(--fg); }
nav.main a[aria-current="page"] { color: var(--fg); text-decoration: underline; text-underline-offset: .4em; }
nav.main a.book { color: var(--signal); }

/* index */
.blog { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.blog-head { display: grid; gap: .9rem; margin-bottom: clamp(2rem, 5vw, 3rem); }
.blog-head h1 { font-size: clamp(2.6rem, 7vw, 5rem); }
.lede { color: var(--mute); font-size: 1.15rem; }
.lede a { color: var(--fg); text-underline-offset: 3px; }
.post-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); max-width: 52rem; }
.post-list li { border-bottom: 1px solid var(--line); }
.post-list article { display: grid; gap: .6rem; padding-block: 1.5rem; }
.post-list h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); }
.post-list h2 a { text-decoration: none; }
.post-list h2 a:hover { color: var(--signal); text-decoration: underline; }
.post-list p { color: #ddd5c8; }
.post-list .meta { color: var(--mute); }
.empty { color: var(--mute); padding-block: 1.5rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); max-width: 52rem; }
.tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.tags li { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; padding: .15rem .45rem; border: 1px solid var(--line); color: var(--mute); }

/* post */
.post { padding-block: clamp(2rem, 5vw, 4rem); }
.back a { display: inline-block; padding-block: .3rem; text-decoration: none; color: var(--signal); }
.back a:hover { text-decoration: underline; }
.post-head { display: grid; gap: 1rem; margin: 1.2rem 0 2rem; max-width: 52rem; }
.post-head h1 { font-size: clamp(2.4rem, 6.5vw, 4.6rem); }
.post-head .meta { color: var(--mute); }
.post-image { margin: 0 0 2rem; max-width: 52rem; }
.post-body { max-width: 68ch; font-size: 1.125rem; line-height: 1.7; display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.2rem; }
/* a very long word or link wraps instead of widening the page on a phone */
.post-head, .post-body, .post-list article { overflow-wrap: anywhere; }
.post-body p { max-width: none; color: #ece4d6; }
.post-body h2 { font-size: clamp(1.7rem, 4vw, 2.2rem); margin-top: 1rem; }
.post-body h3 { font-size: 1.4rem; margin-top: .5rem; }
.post-body a { color: var(--signal); text-underline-offset: 3px; }
.post-body ul, .post-body ol { margin: 0; padding-left: 1.3rem; display: grid; gap: .4rem; }
.post-body li::marker { color: var(--signal); }
.post-body blockquote { margin: 0; padding: .2rem 0 .2rem 1.2rem; border-left: 3px solid var(--signal); }
.post-body blockquote p { color: var(--fg); font-style: italic; }
.post-body code { font-family: var(--font-mono); font-size: .88em; background: var(--panel); padding: .1em .3em; overflow-wrap: anywhere; }
.post-body figure { margin: .4rem 0; }
.more { border-top: 1px solid var(--line); padding-block: 2.5rem 3rem; display: grid; gap: 1.2rem; }
.more h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); }
.more ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem; }

/* footer (as the home page) */
footer { border-top: 1px solid var(--line); padding-block: 2.5rem 3rem; color: var(--mute); }
footer .wrap { display: grid; gap: 2rem; }
.foot-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2rem; }
.signup { display: grid; gap: .7rem; }
.socials { display: flex; flex-wrap: wrap; gap: .2rem 1.4rem; align-content: start; }
.socials a { display: inline-block; padding-block: .3rem; text-decoration: none; color: var(--fg); }
.socials a:hover { color: var(--signal); }
.small { font-size: .8rem; }
@media (max-width: 720px) { .foot-top { grid-template-columns: 1fr; } }