/* Hype Network — blog.css (shared stylesheet) */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
}

:root {
  --bg: #ffffff;
  --text: #3a3a48;
  --heading: #1a1a2e;
  --subtext: #6a6a7a;
  --card-bg: #f8f8fc;
  --card-border: #e8e8f0;
  --accent: #8247E5;
  --accent-light: #a78bfa;
  --callout-bg: rgba(130,71,229,0.06);
  --border: #e8e8f0;
  --code-bg: #f1f1f6;
}
body.dark {
  --bg: #0a0a10;
  --text: #c8c8d0;
  --heading: #ffffff;
  --subtext: rgba(255,255,255,0.55);
  --card-bg: rgba(255,255,255,0.03);
  --card-border: rgba(255,255,255,0.08);
  --accent: #8247E5;
  --accent-light: #a78bfa;
  --callout-bg: rgba(130,71,229,0.1);
  --border: rgba(255,255,255,0.08);
  --code-bg: rgba(255,255,255,0.06);
}

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
}
.topbar a.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--heading); text-decoration: none; font-weight: 700; }
.topbar a.brand img { width: 28px; height: 28px; border-radius: 6px; }
.topbar nav { display: flex; align-items: center; gap: 18px; }
.topbar nav a { color: var(--subtext); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.topbar nav a:hover { color: var(--accent); }
.cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 10px;
  background: linear-gradient(135deg, #8247E5, #7339d4);
  color: #fff !important; text-decoration: none; font-weight: 600; font-size: 0.9rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
.cta:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(130,71,229,0.35); }

/* Theme toggle */
.theme-toggle {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  color: var(--accent); cursor: pointer; font-size: 1rem;
}
.theme-toggle:hover { border-color: var(--accent); }

/* Layout */
.container { max-width: 760px; margin: 0 auto; padding: 48px 24px 96px; }
.container.wide { max-width: 1080px; }

/* Blog index */
.hero { text-align: center; padding: 40px 16px 32px; }
.hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); color: var(--heading); margin-bottom: 12px; letter-spacing: -0.02em; }
.hero p { color: var(--subtext); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

.post-list { display: grid; gap: 20px; margin-top: 40px; }
.post-card {
  display: block; padding: 28px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 16px; text-decoration: none; color: inherit;
  transition: border-color 0.2s, transform 0.2s;
}
.post-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.post-card .tag {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  background: var(--callout-bg); color: var(--accent);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; margin-bottom: 10px;
}
.post-card h2 { font-size: 1.35rem; color: var(--heading); margin-bottom: 8px; }
.post-card p { color: var(--subtext); font-size: 0.98rem; }
.post-card .meta { display: flex; gap: 14px; margin-top: 14px; color: var(--subtext); font-size: 0.82rem; }

/* Article */
article.post h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); color: var(--heading); line-height: 1.2; margin-bottom: 12px; letter-spacing: -0.02em; }
article.post .post-meta { color: var(--subtext); font-size: 0.9rem; margin-bottom: 36px; display: flex; gap: 14px; flex-wrap: wrap; }
article.post h2 { font-size: 1.6rem; color: var(--heading); margin: 40px 0 14px; letter-spacing: -0.01em; }
article.post h3 { font-size: 1.2rem; color: var(--heading); margin: 28px 0 10px; }
article.post p { margin-bottom: 18px; }
article.post ul, article.post ol { margin: 0 0 20px 24px; }
article.post li { margin-bottom: 8px; }
article.post a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
article.post a:hover { color: var(--accent-light); }
article.post blockquote {
  padding: 16px 22px; border-left: 3px solid var(--accent);
  background: var(--callout-bg); border-radius: 0 10px 10px 0;
  margin: 24px 0; color: var(--heading); font-style: italic;
}
article.post code {
  background: var(--code-bg); padding: 2px 7px; border-radius: 5px;
  font-family: 'SF Mono', Consolas, monospace; font-size: 0.9em;
}
article.post pre {
  background: var(--code-bg); padding: 18px; border-radius: 12px;
  overflow-x: auto; margin: 20px 0;
}
article.post pre code { background: none; padding: 0; }
article.post table {
  width: 100%; border-collapse: collapse; margin: 20px 0;
  border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
}
article.post th, article.post td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
article.post th { background: var(--callout-bg); color: var(--heading); font-weight: 600; }

.callout {
  padding: 20px 24px; background: var(--callout-bg);
  border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0;
  margin: 28px 0;
}
.callout strong { color: var(--accent); }

/* CTA block */
.cta-block {
  margin-top: 56px; padding: 32px; text-align: center;
  background: linear-gradient(135deg, rgba(130,71,229,0.12), rgba(130,71,229,0.04));
  border: 1px solid var(--card-border); border-radius: 16px;
}
.cta-block h3 { color: var(--heading); margin-bottom: 8px; font-size: 1.3rem; }
.cta-block p { color: var(--subtext); margin-bottom: 16px; }

/* Related */
.related { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--border); }
.related h3 { color: var(--heading); margin-bottom: 16px; font-size: 1.1rem; }
.related ul { list-style: none; margin: 0; padding: 0; }
.related li { margin-bottom: 10px; }
.related a { color: var(--accent); text-decoration: none; }
.related a:hover { text-decoration: underline; }

/* Footer */
.site-footer { text-align: center; padding: 40px 20px; border-top: 1px solid var(--border); color: var(--subtext); font-size: 0.85rem; }
.site-footer a { color: var(--subtext); margin: 0 8px; text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer .social-row { display: flex; justify-content: center; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.site-footer .social-row a { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 10px; background: var(--card-bg); border: 1px solid var(--card-border); color: var(--subtext); margin: 0; transition: background 0.2s, color 0.2s, border-color 0.2s; }
.site-footer .social-row a:hover { background: var(--callout-bg); color: var(--accent); border-color: var(--accent); }
.site-footer .social-row svg { width: 16px; height: 16px; }
.site-footer .legal-row { line-height: 1.7; }

@media (max-width: 640px) {
  .topbar nav a:not(.cta) { display: none; }
  .container { padding: 28px 18px 64px; }
}