/* The blog: the landing page's paper, purple and fonts, with a reading column
   for long text. Built pages come from marketing/build_blog.py. Light by
   default; [data-theme="dark"] (from /theme.js) swaps the tokens. */
@font-face { font-family: "Bricolage Grotesque"; src: url("/fonts/bricolage-grotesque.woff2") format("woff2"); font-weight: 200 800; font-display: swap; }
@font-face { font-family: "Public Sans"; src: url("/fonts/public-sans.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/fonts/jetbrains-mono.woff2") format("woff2"); font-weight: 100 800; font-display: swap; }

:root {
  --purple: #5b21b6; --purple-deep: #3b0f7a; --purple-fill: #5b21b6; --purple-fill-deep: #3b0f7a;
  --purple-soft: #f1ebfd; --purple-line: #d9cdf6;
  --paper: #ffffff; --tint: #f8f5fe; --ink: #120d1f; --muted: #463f57; --rule: #ddd7ea;
  --tick: #047857; --tick-soft: #e3f6ee; --warn-soft: #fff3df; --warn: #8a4b00; --focus: #7c3aed;
  --shadow: 0 24px 60px -28px rgb(59 15 122 / 0.45);
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "Public Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --purple: #a78bfa; --purple-deep: #ddd6fe; --purple-fill: #6d28d9; --purple-fill-deep: #5b21b6;
  --purple-soft: #2a1f4a; --purple-line: #4c3d75;
  --paper: #0e0b16; --tint: #161222; --ink: #ede9f6; --muted: #b3aac6; --rule: #2f2843;
  --tick: #34d399; --tick-soft: #0d2e24; --warn-soft: #33260a; --warn: #fbbf24; --focus: #c4b5fd;
  --shadow: 0 24px 60px -28px rgb(0 0 0 / 0.8);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 5.5rem; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.125rem/1.7 var(--body); }
a { color: var(--purple); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.wrap { max-width: 72rem; margin: 0 auto; padding-inline: 20px; }

/* top bar, as on the landing page */
.top { position: sticky; top: 0; z-index: 10; background: var(--paper);
       background: color-mix(in srgb, var(--paper) 90%, transparent); backdrop-filter: blur(10px);
       border-bottom: 1px solid var(--rule); }
.bar { display: flex; align-items: center; gap: 0.75rem 1.25rem; padding-block: 0.9rem; }
.brand { font: 800 1.75rem/1 var(--display); letter-spacing: -0.035em; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand span { color: var(--purple); }
.links { display: flex; gap: 1.4rem; font-weight: 600; font-size: 1rem; }
.links a { text-decoration: none; color: var(--muted); }
.links a:hover, .links a[aria-current] { color: var(--purple); }
.theme-toggle { width: 2.6rem; height: 2.6rem; flex: none; display: inline-grid; place-items: center; padding: 0;
  border-radius: 999px; border: 1.5px solid var(--rule); background: var(--paper); color: var(--ink); cursor: pointer; }
.theme-toggle:hover { border-color: var(--purple); color: var(--purple); }
.theme-toggle svg { width: 1.2rem; height: 1.2rem; }
.theme-toggle .sun, :root[data-theme="dark"] .theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }

/* buttons */
.cta, .cta-ghost, .btn-nav { display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  text-decoration: none; font: 700 1.05rem/1 var(--body); border-radius: 10px; }
.cta { background: var(--purple-fill); color: #ffffff; padding: 1rem 1.5rem; box-shadow: 0 10px 24px -10px rgb(91 33 182 / 0.6); }
.cta:hover { background: var(--purple-fill-deep); }
.cta-ghost { color: var(--purple); border: 2px solid var(--purple-line); padding: 0.9rem 1.3rem; background: var(--paper); }
.cta-ghost:hover { border-color: var(--purple); }
.btn-nav { font-size: 0.98rem; padding: 0.7rem 1.1rem; background: var(--purple-fill); color: #ffffff; }
.btn-nav:hover { background: var(--purple-fill-deep); }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }

/* the blog index */
.blog-head { padding-block: 3.5rem 2rem; display: grid; gap: 0.7rem; max-width: 46rem; }
.eyebrow { font: 700 0.9rem/1 var(--body); letter-spacing: 0.14em; text-transform: uppercase; color: var(--purple); }
.blog-head h1, .article h1 { font: 800 clamp(2.2rem, 1.5rem + 2.6vw, 3.4rem)/1.05 var(--display); letter-spacing: -0.045em; margin: 0; text-wrap: balance; }
.blog-head p { margin: 0; color: var(--muted); font-size: 1.2rem; }
.posts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; padding-bottom: 4rem; }
.post-card { display: grid; gap: 0.6rem; align-content: start; padding: 1.6rem; border: 1px solid var(--rule); border-radius: 14px;
  background: var(--paper); text-decoration: none; color: inherit; transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s; }
.post-card:hover { border-color: var(--purple-line); transform: translateY(-2px); box-shadow: var(--shadow); }
.post-card b { font: 800 1.35rem/1.25 var(--display); letter-spacing: -0.02em; color: var(--ink); }
.post-card p { margin: 0; color: var(--muted); font-size: 1.02rem; }
.post-card .meta, .article .meta { font-size: 0.92rem; color: var(--muted); }
.post-card .more-link { color: var(--purple); font-weight: 700; }

/* an article */
.article { max-width: 46rem; padding-block: 2.5rem 2rem; }
.crumbs { font-size: 0.95rem; margin-bottom: 1.2rem; }
.crumbs a { text-decoration: none; font-weight: 600; }
.article .meta { margin: 1rem 0 0; }
.article .lede { font-size: 1.3rem; line-height: 1.55; color: var(--muted); margin: 1rem 0 2rem; }
.prose h2 { font: 800 1.85rem/1.2 var(--display); letter-spacing: -0.03em; margin: 2.6rem 0 0.8rem; }
.prose h3 { font: 800 1.35rem/1.3 var(--display); letter-spacing: -0.02em; margin: 2rem 0 0.6rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.15rem; }
.prose li { margin-bottom: 0.45rem; }
.prose li::marker { color: var(--purple); font-weight: 700; }
.prose strong { color: var(--ink); }
.prose p code, .prose li code { white-space: nowrap; }
.prose code { font: 500 0.88em var(--mono); background: var(--tint); border: 1px solid var(--rule); border-radius: 6px; padding: 0.1em 0.35em; }
.prose blockquote { margin: 1.6rem 0; padding: 1rem 1.2rem; background: var(--purple-soft); border-left: 4px solid var(--purple);
  border-radius: 0 10px 10px 0; color: var(--ink); }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose img { display: block; max-width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 12px; box-shadow: var(--shadow); margin: 1.6rem 0; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2.4rem 0; }
.table-wrap { overflow-x: auto; margin: 1.4rem 0 1.6rem; border: 1px solid var(--rule); border-radius: 12px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 1rem; }
.prose th { background: var(--purple-fill); color: #ffffff; text-align: left; padding: 0.65rem 0.9rem; font-weight: 700; white-space: nowrap; }
.prose td { padding: 0.6rem 0.9rem; border-top: 1px solid var(--rule); vertical-align: top; }
.prose tbody tr:nth-child(even) td { background: var(--tint); }
.prose .download { display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 700; }

.cta-box { margin: 3rem 0 2.5rem; padding: 2rem; border-radius: 16px; border: 2px solid var(--purple);
  background: var(--paper); box-shadow: var(--shadow); display: grid; gap: 0.8rem; }
.cta-box b { font: 800 1.6rem/1.2 var(--display); letter-spacing: -0.03em; }
.cta-box p { margin: 0 0 0.4rem; color: var(--muted); }
.related { border-top: 1px solid var(--rule); padding-top: 1.6rem; margin-bottom: 4rem; }
.related h2 { font: 800 1.4rem/1.2 var(--display); margin: 0 0 1rem; }
.related ul { margin: 0; padding-left: 1.2rem; display: grid; gap: 0.5rem; }

footer { border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.95rem; background: var(--tint); }
footer .wrap { padding-block: 1.6rem 2.6rem; display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between; }

@media (max-width: 60rem) { .links { display: none; } .posts { grid-template-columns: 1fr; } }
@media (max-width: 30rem) { .bar .btn-nav { padding: 0.65rem 0.85rem; font-size: 0.92rem; } .cta, .cta-ghost { width: 100%; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }