/* =======================
   Design tokens
   ======================= */
:root {
  --fg: #0a0a0a;
  --bg: #ffffff;
  --muted: #5b5b5b;
  --link: #0a66c2;
  --border: #e5e7eb;
  --maxw: 70ch;
}

/* =======================
   Base & layout
   ======================= */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  color: var(--fg);
  background: var(--bg);
  line-height: 1.65;
  font: 16px/1.65 system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;

  /* Sticky footer (no wrapper needed) */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main { flex: 1 0 auto; }   /* main grows to fill */
.site-footer { margin-top: auto; }/* pushes footer down */

/* Shared container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

/* Readable content width & rhythm */
.prose {
  max-width: var(--maxw);
  margin: 2rem auto 3rem;
}

.prose h1, .prose h2, .prose h3 { line-height: 1.25; margin: 2rem 0 1rem; }
.prose h1 { font-size: 2rem; }
.prose h2 { font-size: 1.5rem; }
.prose h3 { font-size: 1.25rem; }
.prose p, .prose ul, .prose ol, .prose blockquote, .prose pre { margin: 1rem 0; }
.prose a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; }
.prose blockquote { border-left: 4px solid var(--border); padding-left: 1rem; color: var(--muted); font-style: italic; margin-left: 0; }
.prose code {
  padding: 0.15em 0.35em;
  border-radius: 4px;
  background: #f6f8fa;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.95em;
}
.prose pre { overflow: auto; padding: 1rem; background: #0f172a; color: #e5e7eb; border-radius: 8px; }
.prose pre code { background: transparent; padding: 0; color: inherit; }
.prose img { max-width: 100%; height: auto; }

/* Skip link for a11y */
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  background: #fff;
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
}

/* =======================
   Header & brand
   ======================= */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
}
.brand-logo { width: 40px; height: 40px; object-fit: contain; border-radius: 6px; }
.brand-title { font-weight: 700; font-size: 1.125rem; color: #111; }

/* Nav */
.site-nav a, .nav a, .footer-nav a {
  color: #333;
  text-decoration: none;
  margin-left: 1rem;
}
.site-nav a:hover, .nav a:hover, .footer-nav a:hover {
  color: #000;
  text-decoration: underline;
}
.site-nav a.active, .nav a.active, .footer-nav a.active {
  text-decoration: underline;
  font-weight: 600;
}

/* =======================
   Post list & meta
   ======================= */
.post-meta {
  margin-top: -0.25rem;
  margin-bottom: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.posts-grid { display: grid; gap: 1.1rem; }
.post-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  background: #fff;
  transition: box-shadow .15s ease, transform .05s ease;
}
.post-card:hover { box-shadow: 0 6px 24px rgba(0,0,0,.06); transform: translateY(-1px); }
.post-card h2 { margin: .2rem 0 .4rem; font-size: 1.25rem; }
.post-card .meta { color: var(--muted); font-size: .9rem; margin-bottom: .25rem; }
.post-card p.excerpt { margin: .4rem 0 0; }

/* =======================
   Footer
   ======================= */
.site-footer {
  padding: 1.25rem 0 1.75rem;
  color: #444;
  font-size: 0.95rem;
  background: #fff;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem;
}

.footer-left { display: grid; gap: 0.35rem; }
.copyright { margin: 0; color: #666; }

.footer-link { color: #333; text-decoration: none; }
.footer-link:hover { text-decoration: underline; }

.footer-badges { display: flex; gap: .5rem; flex-wrap: wrap; }
.badge {
  display: inline-block;
  border: 1px solid #e5e7eb;
  border-radius: 999px;
  padding: .3rem .6rem;
  font-size: .85rem;
  text-decoration: none;
}
.badge-live  { background: #eaf7ef; color: #145a2a; border-color: #cfead8; }
.badge-https { background: #eaf1ff; color: #1e3a8a; border-color: #d7e4ff; }
.badge-ghp   { background: #f3f3f3; color: #333;   border-color: #e3e3e3; }

/* =======================
   Responsive
   ======================= */
@media (max-width: 720px) {
  .header-row { flex-wrap: wrap; }
  .site-nav a, .nav a, .footer-nav a { margin-left: .75rem; }
  .footer-grid { grid-template-columns: 1fr; justify-items: start; gap: .75rem; }
}

/* =======================
   Dark mode
   ======================= */
@media (prefers-color-scheme: dark) {
  body { color: #e7e7e7; background: #111; }
  .site-header, .site-footer { border-color: #2a2a2a; background: #0f0f0f; }
  .brand-title, .site-nav a, .footer-nav a, .footer-link { color: #e7e7e7; }
  .footer-link:hover, .site-nav a:hover, .footer-nav a:hover { color: #fff; }

  .badge-live  { background: #143a22; color: #b4f3c7; border-color: #235e3a; }
  .badge-https { background: #132444; color: #b9d3ff; border-color: #203a6f; }
  .badge-ghp   { background: #1b1b1b; color: #ddd;   border-color: #2a2a2a; }

  .copyright { color: #aaa; }
}