/* go-blog default theme — editorial, minimal, readable */

:root {
  --blog-bg: #ffffff;
  --blog-fg: #1e1e2e;
  --blog-fg-muted: #6b7280;
  --blog-fg-subtle: #9ca3af;
  --blog-border: #e5e7eb;
  --blog-card: #fafafa;
  --blog-accent: #2563eb;
  --blog-accent-hover: #1d4ed8;
  --blog-code-bg: #f3f4f6;
  --blog-max: 960px;
  --blog-article-max: 720px;
  --blog-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --blog-font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --blog-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --blog-bg: #0f1115;
    --blog-fg: #e5e7eb;
    --blog-fg-muted: #9ca3af;
    --blog-fg-subtle: #6b7280;
    --blog-border: #1f2937;
    --blog-card: #14171d;
    --blog-code-bg: #1a1d24;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body.blog-body {
  font-family: var(--blog-font-sans);
  background: var(--blog-bg);
  color: var(--blog-fg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--blog-accent); text-decoration: none; }
a:hover { color: var(--blog-accent-hover); text-decoration: underline; }

.blog-container {
  max-width: var(--blog-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.blog-header {
  border-bottom: 1px solid var(--blog-border);
  padding: 20px 0;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--blog-bg) 90%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  z-index: 10;
}
.blog-header .blog-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.blog-brand {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--blog-fg);
}
.blog-brand:hover { text-decoration: none; color: var(--blog-accent); }
.blog-nav { display: flex; gap: 20px; font-size: 14px; align-items: center; }
.blog-nav a { color: var(--blog-fg-muted); }
.blog-nav a:hover { color: var(--blog-accent); text-decoration: none; }
.blog-nav-home { color: var(--blog-fg) !important; font-weight: 500; padding-right: 18px; border-right: 1px solid var(--blog-border); }
.blog-nav-home:hover { color: var(--blog-accent) !important; }

/* Main + footer */
.blog-main { padding: 48px 24px 80px; }
.blog-footer {
  border-top: 1px solid var(--blog-border);
  padding: 24px 0;
  color: var(--blog-fg-muted);
  font-size: 14px;
}
.blog-footer .blog-container { display: flex; justify-content: center; gap: 12px; }
.blog-footer-sep { color: var(--blog-fg-subtle); }

/* Hero */
.blog-hero { padding: 40px 0 56px; border-bottom: 1px solid var(--blog-border); margin-bottom: 48px; }
.blog-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.blog-hero-accent { color: var(--blog-accent); }
.blog-hero p { font-size: 18px; color: var(--blog-fg-muted); max-width: 640px; margin: 0; }

/* Post feed — editorial layout */
.post-feed { display: flex; flex-direction: column; gap: 56px; }
.post-item { padding-bottom: 56px; border-bottom: 1px solid var(--blog-border); }
.post-item:last-child { border-bottom: none; padding-bottom: 0; }
.post-item-inner { display: grid; grid-template-columns: 1fr 240px; gap: 32px; align-items: start; }
.post-item:not(:has(.post-item-image)) .post-item-inner { grid-template-columns: 1fr; }

.post-lead .post-item-inner { grid-template-columns: 1fr; gap: 24px; }
.post-lead .post-item-image { order: -1; }
.post-lead .post-item-image img { aspect-ratio: 16 / 9; width: 100%; border-radius: 12px; }
.post-lead .post-item-title { font-size: clamp(1.75rem, 3.2vw, 2.5rem); }

.post-item-meta {
  font-size: 13px;
  color: var(--blog-fg-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.post-item-meta .sep { color: var(--blog-fg-subtle); }
.post-author { color: var(--blog-fg-muted); }
.featured-badge {
  display: inline-block;
  padding: 2px 8px;
  background: var(--blog-accent);
  color: #fff;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.post-item-title {
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 0 0 12px;
  letter-spacing: -0.015em;
  font-weight: 700;
}
.post-item-title a { color: var(--blog-fg); }
.post-item-title a:hover { color: var(--blog-accent); text-decoration: none; }

.post-item-excerpt {
  font-size: 16px;
  color: var(--blog-fg-muted);
  margin: 0 0 12px;
  line-height: 1.6;
}
.post-item-readmore {
  font-size: 14px;
  font-weight: 500;
}

.post-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
  aspect-ratio: 4 / 3;
  display: block;
}

/* Category pills */
.category-pills { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.category-pill {
  display: inline-block;
  padding: 2px 10px;
  background: var(--blog-card);
  border: 1px solid var(--blog-border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--blog-fg-muted);
}
.category-pill:hover { background: var(--blog-accent); color: #fff; border-color: var(--blog-accent); text-decoration: none; }

/* Pagination */
.blog-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--blog-border);
  font-size: 14px;
  color: var(--blog-fg-muted);
}
.blog-pagination .disabled { color: var(--blog-fg-subtle); }

/* Empty state */
.blog-empty { text-align: center; padding: 80px 0; color: var(--blog-fg-muted); }
.blog-empty h3 { margin: 0 0 8px; color: var(--blog-fg); font-size: 20px; }

/* Article page */
.blog-article { max-width: var(--blog-article-max); margin: 0 auto; }
.blog-article-cover { margin: 0 -24px 40px; border-radius: 0; overflow: hidden; }
.blog-article-cover img { width: 100%; height: auto; display: block; }
@media (min-width: 768px) {
  .blog-article-cover { margin: 0 0 40px; border-radius: 16px; }
}

.blog-article-header { margin-bottom: 40px; padding-bottom: 24px; border-bottom: 1px solid var(--blog-border); }
.blog-article-header h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.15;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.blog-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--blog-fg-muted);
  margin-bottom: 12px;
}
.blog-article-meta .sep { color: var(--blog-fg-subtle); }

/* Typography for rendered markdown */
.blog-article-body {
  font-size: 18px;
  line-height: 1.75;
  color: var(--blog-fg);
}
.blog-article-body > * + * { margin-top: 1.25em; }
.blog-article-body h2 {
  font-size: 1.75rem;
  margin-top: 2em;
  margin-bottom: 0.5em;
  letter-spacing: -0.015em;
  font-weight: 700;
  line-height: 1.25;
}
.blog-article-body h3 {
  font-size: 1.35rem;
  margin-top: 1.75em;
  margin-bottom: 0.5em;
  font-weight: 700;
  line-height: 1.3;
}
.blog-article-body h4 { font-size: 1.1rem; margin-top: 1.5em; font-weight: 700; }
.blog-article-body p { margin: 1em 0; }
.blog-article-body a { color: var(--blog-accent); text-decoration: underline; text-underline-offset: 3px; }
.blog-article-body a:hover { color: var(--blog-accent-hover); }
.blog-article-body img { max-width: 100%; height: auto; border-radius: 8px; display: block; margin: 1.5em auto; }
.blog-article-body figure { margin: 1.5em 0; }
.blog-article-body figcaption { font-size: 14px; color: var(--blog-fg-muted); text-align: center; margin-top: 8px; }
.blog-article-body ul, .blog-article-body ol { padding-left: 1.5em; margin: 1em 0; }
.blog-article-body li { margin: 0.4em 0; }
.blog-article-body blockquote {
  border-left: 4px solid var(--blog-accent);
  padding: 0.25em 0 0.25em 1.25em;
  color: var(--blog-fg-muted);
  font-style: italic;
  margin: 1.5em 0;
}
.blog-article-body code {
  font-family: var(--blog-font-mono);
  font-size: 0.9em;
  background: var(--blog-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
}
.blog-article-body pre {
  background: var(--blog-code-bg);
  padding: 16px 20px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
}
.blog-article-body pre code { background: none; padding: 0; font-size: inherit; }
.blog-article-body hr { border: none; border-top: 1px solid var(--blog-border); margin: 2.5em 0; }
.blog-article-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 0.95em; }
.blog-article-body th, .blog-article-body td { padding: 10px 14px; border-bottom: 1px solid var(--blog-border); text-align: left; }
.blog-article-body th { font-weight: 600; background: var(--blog-card); }

/* go-draw embeds (resizable iframe wrapper from go-draw) */
.blog-article-body .godraw-embed { margin: 1.5em 0; }
.blog-article-body iframe { max-width: 100%; border-radius: 10px; }

.blog-article-source {
  margin-top: 14px;
  padding: 10px 14px;
  background: var(--blog-card);
  border-left: 3px solid var(--blog-accent);
  border-radius: 6px;
  font-size: 13px;
  color: var(--blog-fg-muted);
}
.blog-article-source a { color: var(--blog-accent); font-weight: 500; }

.post-author-link { color: var(--blog-accent); text-decoration: none; }
.post-author-link:hover { text-decoration: underline; }

.blog-article-footer { margin-top: 64px; padding-top: 32px; border-top: 1px solid var(--blog-border); font-size: 14px; }
.blog-article-source-foot { margin: 0 0 16px; color: var(--blog-fg-muted); font-size: 14px; }

/* Responsive */
@media (max-width: 700px) {
  .post-item-inner { grid-template-columns: 1fr !important; }
  .post-item-image { order: -1; }
  .post-item-image img { aspect-ratio: 16 / 9; }
  .blog-nav { gap: 14px; font-size: 13px; }
  .blog-main { padding: 32px 20px 60px; }
  .blog-article-body { font-size: 17px; }
}