/* Blog listing surface — consumes site-tokens.css (load it first).
   Same theme behavior as the posts: Apple light first, graphite dark
   auto-variant. Cards are flat panels; hover is color-only. */

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

body {
  font-family: var(--font-text);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1060px; margin: 0 auto; padding: 48px 20px 90px; }

.nav-back { display: inline-flex; align-items: center; margin-bottom: 36px; color: var(--blue); text-decoration: none; font-size: var(--fs-secondary); font-weight: 500; }
.nav-back:hover { text-decoration: underline; }
.nav-back:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; border-radius: 3px; }

.header { margin-bottom: 44px; max-width: 62ch; }
.header h1 { font-size: var(--fs-hero); font-weight: 800; letter-spacing: -0.02em; line-height: 1.12; margin-bottom: 12px; text-wrap: balance; }
.header p { color: var(--muted); }

.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }

.blog-card { background: var(--panel-top); border: 1px solid var(--line); border-radius: var(--r-card); box-shadow: var(--card-shadow); padding: 22px; display: flex; flex-direction: column; text-decoration: none; color: inherit; transition: border-color 200ms; }
.blog-card:hover { border-color: var(--blue); }
.blog-card:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.blog-card-meta { display: flex; gap: 10px; align-items: center; color: var(--muted); font-size: var(--fs-caption); margin-bottom: 14px; }
.blog-card-category { background: color-mix(in srgb, var(--bubble-blue) 15%, transparent); color: var(--blue); padding: 3px 12px; border-radius: var(--r-pill); font-weight: 600; font-size: var(--fs-label); }

.blog-card h2 { font-size: var(--fs-heading); font-weight: 700; letter-spacing: -0.01em; line-height: 1.3; margin-bottom: 10px; color: var(--strong); text-wrap: balance; }
.blog-card-excerpt { font-size: var(--fs-secondary); color: var(--muted); line-height: 1.55; flex: 1; }

.blog-card-footer { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); font-size: var(--fs-caption); color: var(--muted); }
.blog-card-footer .date { font-variant-numeric: tabular-nums; }

@media (max-width: 700px) {
  .container { padding: 26px 16px 72px; }
  .nav-back { margin-bottom: 24px; }
  .header { margin-bottom: 30px; }
  .blog-grid { grid-template-columns: 1fr; gap: 14px; }
}