:root { color-scheme: light dark; }

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.55;
}

a { text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header / Nav */
.site-header {
  border-bottom: 1px solid rgba(128,128,128,0.3);
  padding: 14px 0;
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(0,0,0,0.04);
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand { font-weight: 700; letter-spacing: 0.2px; }

.nav {
  display: flex;
  gap: 14px;
  align-items: center;
}

@media (max-width: 760px){
  .site-header .container { flex-direction: column; align-items: flex-start; }
  .nav { flex-wrap: wrap; }
}

/* Main / Footer */
main.container {
  padding-top: 22px;
  padding-bottom: 10px;
}

.site-footer {
  border-top: 1px solid rgba(128,128,128,0.3);
  margin-top: 36px;
  padding: 18px 0;
}

/* Typography */
h1,h2,h3 { line-height: 1.25; }
h1 { margin: 0 0 10px; }
h2 { margin: 26px 0 10px; }
h3 { margin: 20px 0 8px; }
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 14px 20px; }
li { margin: 6px 0; }

/* UI bits */
.card {
  border: 1px solid rgba(128,128,128,0.28);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 12px 0;
}

.muted { opacity: 0.75; }

.meta {
  font-size: 0.95rem;
  opacity: 0.8;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid rgba(128,128,128,0.28);
  border-radius: 999px;
  font-size: 0.85rem;
  margin-right: 6px;
}

/* ---------- Blog post layout ---------- */
.post {
  max-width: 820px;
  margin: 0 auto;
  padding: 8px 0 0;
}

.post-header {
  margin-bottom: 18px;
}

.post-title {
  font-size: 44px;
  line-height: 1.08;
  margin: 0 0 10px;
}

@media (max-width: 760px) {
  .post-title { font-size: 36px; }
}

.post-lead {
  margin: 10px 0 0;
  font-size: 18px;
  opacity: 0.85;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Markdown content improvements */
.post-body p { line-height: 1.7; }
.post-body :is(h2, h3) { scroll-margin-top: 90px; }
.post-body blockquote {
  margin: 14px 0;
  padding: 10px 14px;
  border-left: 3px solid rgba(128,128,128,0.35);
  opacity: 0.9;
}

.post-body code {
  padding: 2px 6px;
  border: 1px solid rgba(128,128,128,0.25);
  border-radius: 6px;
  font-size: 0.95em;
}

.post-body pre {
  padding: 12px 14px;
  border: 1px solid rgba(128,128,128,0.25);
  border-radius: 12px;
  overflow: auto;
}

.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(128,128,128,0.25);
}

/* FAQ */
.faq { margin-top: 34px; }
.faq-list { display: grid; gap: 10px; }
.faq-item {
  border: 1px solid rgba(128,128,128,0.28);
  border-radius: 12px;
  padding: 10px 12px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
}
.faq-item p { margin: 10px 0 0; line-height: 1.7; }