/*!
 * Algonney Blog — minimal SSR stylesheet.
 *
 * Server-rendered blog HTML (app/blog/renderer.py) is fully functional WITHOUT
 * any client JS; this is the only presentational dependency. It is deliberately
 * self-contained (no @import, no external fonts) so the page renders correctly
 * on the first byte. The optional hydrate bundle (blogHydrate.ts) only adds
 * analytics/prefetch and is not required for layout.
 *
 * Brand: dark navy + cyan. Defaults to a high-readability light theme and
 * switches to the platform dark theme when the visitor prefers dark mode.
 * Class names mirror the renderer's BEM output (.blog-article, .blog-block, …)
 * and the sanitizer's .blog-img-removed placeholder.
 */

/* ---------------------------------------------------------------- tokens --- */
:root {
  --blog-bg: #ffffff;
  --blog-bg-subtle: #f6f8fb;
  --blog-bg-inverted: #0b1220;
  --blog-fg: #1b2433;
  --blog-fg-muted: #5a6678;
  --blog-border: #e3e8ef;
  --blog-brand: #0ea5b7;            /* Algonney cyan */
  --blog-brand-strong: #0891a3;
  --blog-heading: #0b1220;          /* navy */
  --blog-radius: 14px;
  --blog-radius-sm: 9px;
  --blog-content-max: 760px;
  --blog-shadow: 0 1px 2px rgba(11, 18, 32, .06), 0 8px 24px rgba(11, 18, 32, .06);
  --blog-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --blog-bg: #0b1220;
    --blog-bg-subtle: #111a2c;
    --blog-bg-inverted: #060b16;
    --blog-fg: #d7deea;
    --blog-fg-muted: #94a2b8;
    --blog-border: #1e293b;
    --blog-brand: #22d3ee;
    --blog-brand-strong: #67e8f9;
    --blog-heading: #f1f5fb;
    --blog-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .35);
  }
}

/* ------------------------------------------------------------------ base --- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--blog-bg);
  color: var(--blog-fg);
  font-family: var(--blog-font);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blog-brand-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --------------------------------------------------------------- layout ---- */
.blog-main { max-width: var(--blog-content-max); margin: 0 auto; padding: 32px 20px 96px; }
.blog-body { display: flex; flex-direction: column; gap: 28px; }
.blog-block { margin: 0; }
.blog-layout--wide { max-width: 1040px; }
.blog-layout--narrow { max-width: 620px; }
.blog-align--left { text-align: left; }
.blog-align--center { text-align: center; }
.blog-align--right { text-align: right; }
.blog-spacing--compact { gap: 16px; }
.blog-spacing--loose { gap: 44px; }

/* ---------------------------------------------------------------- header --- */
.blog-article__header { margin-bottom: 28px; }
.blog-article__category {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .04em;
  text-transform: uppercase; color: var(--blog-brand-strong); margin-bottom: 12px;
}
.blog-article__title,
h1.blog-article__title {
  font-size: clamp(28px, 5vw, 44px); line-height: 1.15; margin: 0 0 16px;
  color: var(--blog-heading); font-weight: 800; letter-spacing: -.01em;
}
.blog-article__summary { font-size: 20px; color: var(--blog-fg-muted); margin: 0 0 20px; }
.blog-article__meta { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; font-size: 15px; color: var(--blog-fg-muted); }
.blog-article__author { font-weight: 600; color: var(--blog-fg); }
.blog-article__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.blog-article__tags a {
  font-size: 13px; padding: 4px 10px; border-radius: 999px;
  background: var(--blog-bg-subtle); border: 1px solid var(--blog-border); color: var(--blog-fg-muted);
}
.blog-article__tags a:hover { color: var(--blog-brand-strong); text-decoration: none; }

.blog-article__hero,
.blog-hero { margin: 0 0 12px; border-radius: var(--blog-radius); overflow: hidden; }
.blog-hero__eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--blog-brand-strong); margin-bottom: 8px; }
.blog-hero__title { font-size: clamp(30px, 6vw, 52px); line-height: 1.1; color: var(--blog-heading); font-weight: 800; margin: 0 0 12px; letter-spacing: -.015em; }
.blog-hero__subtitle { font-size: 20px; color: var(--blog-fg-muted); margin: 0; }

/* ----------------------------------------------------------- typography ---- */
.blog-article__content h2,
.blog-heading { font-size: clamp(24px, 4vw, 32px); line-height: 1.25; color: var(--blog-heading); margin: 8px 0 14px; font-weight: 700; }
.blog-article__content h3 { font-size: 22px; margin: 24px 0 10px; color: var(--blog-heading); }
.blog-article__content h4 { font-size: 19px; margin: 20px 0 8px; color: var(--blog-heading); }
.blog-article__content p { margin: 0 0 16px; }
.blog-article__content ul,
.blog-article__content ol { margin: 0 0 16px; padding-left: 1.4em; }
.blog-article__content li { margin: 4px 0; }
.blog-article__content blockquote {
  margin: 0 0 16px; padding: 12px 18px; border-left: 4px solid var(--blog-brand);
  background: var(--blog-bg-subtle); border-radius: 0 var(--blog-radius-sm) var(--blog-radius-sm) 0; color: var(--blog-fg);
}
.blog-article__content code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; background: var(--blog-bg-subtle); padding: 2px 6px; border-radius: 6px; }
.blog-article__content pre { background: var(--blog-bg-inverted); color: #e6edf6; padding: 18px; border-radius: var(--blog-radius-sm); overflow-x: auto; }
.blog-article__content pre code { background: none; padding: 0; color: inherit; }
.blog-article__content img { border-radius: var(--blog-radius-sm); margin: 8px 0; }

/* ---------------------------------------------------------------- blocks --- */
.blog-table-wrap { overflow-x: auto; }
.blog-table,
.blog-article__content table { width: 100%; border-collapse: collapse; font-size: 16px; }
.blog-table th, .blog-table td,
.blog-article__content th, .blog-article__content td { border: 1px solid var(--blog-border); padding: 10px 14px; text-align: left; }
.blog-table th, .blog-article__content th { background: var(--blog-bg-subtle); font-weight: 700; color: var(--blog-heading); }
.blog-table.blog-comparison th[scope="col"],
.blog-comparison .blog-proscons__col { text-align: center; }

.blog-proscons__col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.blog-proscons__pros, .blog-proscons__cons { padding: 18px; border-radius: var(--blog-radius-sm); border: 1px solid var(--blog-border); background: var(--blog-bg-subtle); }
.blog-proscons__pros { border-top: 4px solid #16a34a; }
.blog-proscons__cons { border-top: 4px solid #dc2626; }
.blog-proscons__pros h4, .blog-proscons__cons h4 { margin: 0 0 8px; }
@media (max-width: 600px) { .blog-proscons__col { grid-template-columns: 1fr; } }

.blog-steps { counter-reset: step; display: flex; flex-direction: column; gap: 18px; }
.blog-steps__item { display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: start; }
.blog-steps__num { counter-increment: step; width: 44px; height: 44px; border-radius: 50%; background: var(--blog-brand); color: #fff; font-weight: 700; display: grid; place-items: center; }
.blog-steps__num::before { content: counter(step); }
.blog-steps__body h4 { margin: 2px 0 6px; color: var(--blog-heading); }
.blog-steps__img { border-radius: var(--blog-radius-sm); margin-top: 10px; }

.blog-callout { padding: 16px 18px; border-radius: var(--blog-radius-sm); border: 1px solid var(--blog-border); background: var(--blog-bg-subtle); border-left: 4px solid var(--blog-brand); }
.blog-callout__title { font-weight: 700; color: var(--blog-heading); margin: 0 0 6px; }

.blog-cta { display: flex; flex-direction: column; gap: 12px; padding: 28px; border-radius: var(--blog-radius); background: var(--blog-bg-inverted); color: #e6edf6; text-align: center; }
.blog-cta__body { margin: 0; color: #c2ccda; }
.blog-cta__img { border-radius: var(--blog-radius-sm); }

.blog-btn { display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 700; font-size: 16px; border: 2px solid transparent; cursor: pointer; }
.blog-btn--primary { background: var(--blog-brand); color: #fff; }
.blog-btn--primary:hover { background: var(--blog-brand-strong); text-decoration: none; }
.blog-btn--secondary { background: transparent; color: #e6edf6; border-color: rgba(255, 255, 255, .35); }
.blog-btn--secondary:hover { border-color: var(--blog-brand); color: var(--blog-brand-strong); text-decoration: none; }
.blog-btn--ghost { background: transparent; color: var(--blog-brand-strong); }

/* Native <details> FAQ — no JS required. */
.blog-faq__item,
details.blog-faq__item { border: 1px solid var(--blog-border); border-radius: var(--blog-radius-sm); padding: 14px 18px; margin-bottom: 10px; background: var(--blog-bg-subtle); }
.blog-faq__item > summary,
details.blog-faq__item > summary { cursor: pointer; font-weight: 700; color: var(--blog-heading); list-style: none; }
.blog-faq__item > summary::-webkit-details-marker { display: none; }
.blog-faq__item > summary::before { content: "▸ "; color: var(--blog-brand-strong); }
.blog-faq__item[open] > summary::before { content: "▾ "; }
.blog-faq__answer { margin-top: 10px; }

.blog-related__title { font-size: 24px; color: var(--blog-heading); margin: 12px 0 16px; }
.blog-related__list { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; list-style: none; padding: 0; margin: 0; }
.blog-related__card { display: block; padding: 16px; border: 1px solid var(--blog-border); border-radius: var(--blog-radius-sm); background: var(--blog-bg-subtle); color: var(--blog-fg); }
.blog-related__card:hover { border-color: var(--blog-brand); text-decoration: none; }

/* ----------------------------------------------------------------- index --- */
.blog-index { max-width: 1040px; margin: 0 auto; padding: 32px 20px 96px; }
.blog-index__title { font-size: clamp(28px, 5vw, 40px); color: var(--blog-heading); margin: 0 0 24px; }
.blog-index__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 22px; list-style: none; padding: 0; margin: 0; }
.blog-card { display: flex; flex-direction: column; gap: 10px; padding: 18px; border: 1px solid var(--blog-border); border-radius: var(--blog-radius); background: var(--blog-bg); box-shadow: var(--blog-shadow); transition: transform .15s ease, border-color .15s ease; }
.blog-card:hover { transform: translateY(-2px); border-color: var(--blog-brand); text-decoration: none; }
.blog-card__title { font-size: 20px; font-weight: 700; color: var(--blog-heading); margin: 0; }
.blog-card__summary { color: var(--blog-fg-muted); margin: 0; font-size: 16px; }

/* ----------------------------------------------- design-token modifiers ---- */
.blog-accent--brand { color: var(--blog-brand-strong); }
.blog-accent--success { color: #16a34a; }
.blog-accent--warning { color: #d97706; }
.blog-accent--danger { color: #dc2626; }
.blog-accent--info { color: #2563eb; }
.blog-bg--subtle { background: var(--blog-bg-subtle); padding: 16px; border-radius: var(--blog-radius-sm); }
.blog-bg--brand { background: var(--blog-bg-inverted); color: #e6edf6; padding: 16px; border-radius: var(--blog-radius-sm); }
.blog-bg--inverted { background: var(--blog-bg-inverted); color: #e6edf6; padding: 16px; border-radius: var(--blog-radius-sm); }

/* ------------------------------------- sanitizer placeholder (dropped img) -- */
.blog-img-removed { display: inline; font-style: italic; color: var(--blog-fg-muted); }