:root {
  --bg: #0f1115;
  --bg-elevated: #171a21;
  --text: #e8eaed;
  --text-dim: #a3a9b4;
  --accent: #6ee7b7;
  --accent-2: #60a5fa;
  --border: #262b35;
  --radius: 12px;
  --max-width: 1120px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-elevated: #f4f5f7;
    --text: #16181d;
    --text-dim: #565d6b;
    --border: #e4e6ea;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

header.site-header {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.brand { font-weight: 800; font-size: 1.4rem; color: var(--text); letter-spacing: -0.02em; }
.brand span { color: var(--accent); }

nav.main-nav { display: flex; gap: 20px; flex-wrap: wrap; }
nav.main-nav a { color: var(--text-dim); font-weight: 600; font-size: 0.95rem; }
nav.main-nav a:hover { color: var(--text); text-decoration: none; }

main { padding: 40px 0 80px; }

.hero-tagline { color: var(--text-dim); margin: 4px 0 32px; font-size: 1.05rem; }

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
  margin: 24px 0;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--accent-2); }
.card img { border-radius: 0; aspect-ratio: 16/9; object-fit: cover; }
.card-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-body h3 { margin: 0; font-size: 1.05rem; line-height: 1.35; }
.card-body h3 a { color: var(--text); }
.card-meta { font-size: 0.8rem; color: var(--text-dim); }
.card-excerpt { font-size: 0.9rem; color: var(--text-dim); flex: 1; }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--bg);
  background: var(--accent);
  padding: 3px 8px;
  border-radius: 999px;
  width: fit-content;
}

article.single { max-width: 760px; margin: 0 auto; }
article.single .featured { margin-bottom: 24px; aspect-ratio: 16/9; object-fit: cover; width: 100%; }
article.single h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 10px; letter-spacing: -0.01em; }
article.single .meta { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 28px; }
article.single .content { font-size: 1.05rem; }
article.single .content h2 { margin-top: 2.2em; font-size: 1.4rem; }
article.single .content h3 { margin-top: 1.8em; font-size: 1.15rem; }
article.single .content ul, article.single .content ol { padding-left: 1.3em; }
article.single .content img { margin: 20px 0; }
article.single .content blockquote {
  border-left: 3px solid var(--accent);
  margin: 20px 0;
  padding: 4px 20px;
  color: var(--text-dim);
}
article.single .content pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  overflow-x: auto;
}
article.single .content table { border-collapse: collapse; width: 100%; }
article.single .content table th, article.single .content table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
}

.tags-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0; }
.tags-row a {
  font-size: 0.8rem;
  color: var(--text-dim);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 999px;
}
.tags-row a:hover { color: var(--text); text-decoration: none; }

.breadcrumbs { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 20px; }
.breadcrumbs a { color: var(--text-dim); }

.pagination { display: flex; justify-content: center; gap: 10px; margin-top: 40px; }
.pagination a, .pagination span {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text);
}
.pagination .current { background: var(--accent); color: var(--bg); border-color: var(--accent); font-weight: 700; }
.pagination a:hover { border-color: var(--accent-2); text-decoration: none; }

.page-title { font-size: 1.8rem; margin-bottom: 6px; }
.page-subtitle { color: var(--text-dim); margin-bottom: 32px; }

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
}
footer.site-footer a { color: var(--text-dim); }

.static-page-content { max-width: 760px; margin: 0 auto; }

@media (max-width: 640px) {
  article.single h1 { font-size: 1.5rem; }
  .site-header .container { flex-direction: column; align-items: flex-start; gap: 10px; }
}