/* ── blog index: sidebar filter · list · hover preview (stripe.dev pattern) ── */

.blog-layout { display: grid; grid-template-columns: 19rem 1fr; gap: clamp(2rem, 4vw, 4rem); align-items: start; }

/* sidebar */
.blog-side { position: sticky; top: 6rem; display: flex; flex-direction: column; gap: .15rem; }
.blog-side-label { font-family: var(--jbmono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-40); margin-bottom: .6rem; }
.blog-cat { display: flex; align-items: center; gap: .6rem; font-family: var(--euclid); font-size: .92rem; font-weight: 500; color: var(--ink-60); background: none; border: 0; text-align: left; padding: .5rem .7rem; border-radius: 8px; cursor: pointer; transition: background .12s, color .12s; }
.blog-cat:hover { background: var(--bg-soft); color: var(--ink); }
.blog-cat.is-active { background: var(--blue-tint); color: var(--blue-deep); }
.blog-cat .hex-bullet { transform: scale(.8); }

/* list */
.blog-list { border-top: 1px solid var(--line); }
.blog-row { display: grid; grid-template-columns: 6.5rem 1fr auto; gap: 1.2rem; align-items: baseline; padding: 1.05rem .8rem; border-bottom: 1px solid var(--line); text-decoration: none; border-radius: 0; transition: background .12s; }
.blog-row:hover, .blog-row:focus-visible { background: var(--bg-soft); }
.blog-row:hover h3 { color: var(--blue-deep); }
.blog-date { font-family: var(--jbmono); font-size: .72rem; color: var(--ink-40); white-space: nowrap; }
.blog-row h3 { font-size: 1.22rem; font-weight: 600; letter-spacing: -.01em; transition: color .12s; }
.blog-chip { font-family: var(--jbmono); font-size: .62rem; color: var(--ink-40); border: 1px solid var(--line); padding: .18rem .55rem; border-radius: 99px; white-space: nowrap; }
.blog-empty { padding: 1.5rem .8rem; color: var(--ink-40); font-size: .92rem; }

/* preview panel */
.blog-preview { display: grid; margin-top: 1.8rem; }
.bp-item { grid-area: 1 / 1; opacity: 0; transform: translateY(8px); transition: opacity .25s ease, transform .25s ease; pointer-events: none; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-lg); overflow: hidden; }
.bp-item.is-active { opacity: 1; transform: none; }
.bp-item svg { display: block; width: 100%; aspect-ratio: 16 / 9; }
.bp-item p { padding: 1.1rem 1.3rem 1.2rem; font-size: .92rem; color: var(--ink-60); border-top: 1px solid var(--line); }

@media (max-width: 720px) {
  .blog-preview { display: none; }
  .blog-layout { grid-template-columns: 1fr; }
  .blog-side { position: static; flex-direction: row; flex-wrap: wrap; gap: .4rem; }
  .blog-side-label { width: 100%; }
  .blog-row { grid-template-columns: 1fr auto; }
  .blog-date { order: 3; }
}