/* blog.css — AI Rook blog (matches shop theme) */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg1: #080c14; --bg2: #0b1120; --bg3: #0f172a;
  --blue: #3385ff; --blue2: #60a5fa; --blue-deep: #0066ff;
  --text-h: #e2e8f0; --text-b: #64748b;
  --green: #22c55e;
  --font: 'Inter', system-ui, sans-serif;
  --bl: rgba(96,165,250,0.15);
}

html { scroll-behavior: smooth; }

body {
  font: 400 1rem/1.6 var(--font);
  background: var(--bg1);
  color: var(--text-b);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Gradient mesh background — same as main page */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(51,133,255,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 80%, rgba(96,165,250,0.12) 0%, transparent 55%),
    radial-gradient(ellipse 100% 100% at 50% 0%, rgba(0,102,255,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 70% 70% at 10% 90%, rgba(51,133,255,0.07) 0%, transparent 50%);
  animation: mesh 25s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: -1;
}

@keyframes mesh {
  0% { opacity: 1; transform: scale(1) translate(0,0); }
  50% { opacity: 0.85; transform: scale(1.03) translate(-1%, 1%); }
  100% { opacity: 1; transform: scale(1) translate(1%, -1%); }
}

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 48px;
  background: rgba(8,12,20,0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bl);
}
nav .logo {
  font-weight: 800; font-size: 1.05rem; letter-spacing: 2px;
  color: var(--text-h); text-decoration: none;
}
nav .nav-links { display: flex; gap: 28px; list-style: none; align-items: center; }
nav .nav-links a {
  color: var(--text-b); text-decoration: none; font-size: 0.9rem; font-weight: 500;
  transition: color 0.2s;
}
nav .nav-links a:hover, nav .nav-links a.active { color: var(--text-h); }

.wrap { max-width: 860px; margin: 0 auto; padding: 140px 24px 80px; }

.crumb { font-size: 0.8rem; margin-bottom: 28px; }
.crumb a { color: var(--blue2); text-decoration: none; }
.crumb span { color: var(--text-b); }

h1 {
  color: var(--text-h); font-size: 2.1rem; font-weight: 800;
  line-height: 1.25; letter-spacing: -0.5px; margin-bottom: 14px;
}
.dateline { font-size: 0.82rem; color: var(--text-b); margin-bottom: 40px; }
.dateline strong { color: var(--blue2); font-weight: 600; }

h2 {
  color: var(--text-h); font-size: 1.35rem; font-weight: 700;
  margin: 44px 0 14px; letter-spacing: -0.3px;
}
p { margin-bottom: 18px; line-height: 1.75; }
p a, li a { color: var(--blue2); text-decoration: none; }
p a:hover, li a:hover { text-decoration: underline; }
ul { margin: 0 0 18px 22px; }
li { margin-bottom: 8px; line-height: 1.7; }
strong { color: var(--text-h); font-weight: 600; }

.factbox {
  background: rgba(11,17,32,0.75);
  border: 1px solid var(--bl);
  border-radius: 8px;
  padding: 22px 26px;
  margin: 30px 0;
}
.factbox .fb-title {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--blue2); font-weight: 700; margin-bottom: 12px;
}
.factbox ul { margin: 0 0 0 20px; }
.factbox li { font-size: 0.92rem; }

code {
  background: rgba(51,133,255,0.1);
  border: 1px solid rgba(51,133,255,0.18);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.85em;
  color: var(--blue2);
  font-family: 'SF Mono', 'JetBrains Mono', Menlo, monospace;
}

/* Blog index cards */
.post-card {
  display: block;
  background: rgba(11,17,32,0.75);
  border: 1px solid var(--bl);
  border-radius: 10px;
  padding: 28px 30px;
  margin-bottom: 22px;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
}
.post-card:hover { border-color: rgba(96,165,250,0.4); transform: translateY(-2px); }
.post-card .pc-kicker {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--blue2); font-weight: 700; margin-bottom: 8px;
}
.post-card h2 { margin: 0 0 10px; font-size: 1.3rem; }
.post-card p { margin: 0 0 12px; font-size: 0.94rem; }
.post-card .pc-date { font-size: 0.78rem; color: var(--text-b); }

footer {
  border-top: 1px solid var(--bl);
  padding: 36px 48px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  font-size: 0.82rem;
}
footer a { color: var(--text-b); text-decoration: none; margin-right: 22px; }
footer a:hover { color: var(--text-h); }

@media (max-width: 720px) {
  nav { padding: 14px 20px; }
  nav .nav-links { display: none; }
  .wrap { padding: 110px 18px 60px; }
  h1 { font-size: 1.6rem; }
  footer { padding: 28px 20px; }
}

/* Blog post container — centered with max-width */
.blog-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 120px 32px 80px;
}
.blog-container article {
  width: 100%;
}
.blog-container h1 {
  font-size: 1.9rem;
  line-height: 1.3;
  margin-bottom: 16px;
}
.blog-container h2 {
  margin-top: 40px;
}
.blog-container h3 {
  color: var(--text-h);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 28px 0 10px;
}
.blog-container p {
  font-size: 0.98rem;
  line-height: 1.8;
}
.blog-container ul, .blog-container ol {
  margin: 0 0 18px 24px;
}
.blog-container pre {
  background: rgba(11,17,32,0.9);
  border: 1px solid var(--bl);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 20px 0;
}
.blog-container pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85em;
}
.blog-container hr {
  border: none;
  border-top: 1px solid var(--bl);
  margin: 36px 0;
}
.blog-container blockquote {
  border-left: 3px solid var(--blue);
  padding-left: 18px;
  margin: 20px 0;
  color: var(--text-b);
  font-style: italic;
}
.blog-container footer {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--bl);
  font-size: 0.85rem;
}
.blog-container footer a {
  color: var(--blue2);
  text-decoration: none;
  margin-right: 16px;
}
@media (max-width: 720px) {
  .blog-container { padding: 100px 18px 60px; }
  .blog-container h1 { font-size: 1.5rem; }
}