/* Blog pages: article layout and architecture diagrams. Builds on styles.css tokens. */
.post { position: relative; z-index: 1; padding: 14vh 0 10vh; }
.post-wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.back { display: inline-block; margin-bottom: 36px; color: var(--muted); text-decoration: none; font-size: 15px; }
.back:hover { color: var(--c1); }
.post h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.05; letter-spacing: -.04em; max-width: none; margin: 0 0 18px; }
.post .dek { font-size: 1.25rem; color: #c1d0c9; line-height: 1.5; margin-bottom: 20px; }
.post .byline { color: var(--muted); font-size: 14px; letter-spacing: .04em; margin-bottom: 48px; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 20px; padding: 0; list-style: none; }
.tags li { margin: 0; font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; color: var(--c1); border: 1px solid color-mix(in srgb, var(--c1) 45%, transparent); background: color-mix(in srgb, var(--c1) 10%, transparent); }

.prose { font-size: 1.08rem; line-height: 1.8; }
.prose h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.03em; line-height: 1.15; margin: 3.2rem 0 1rem; }
.prose h2::before { content: ""; display: block; width: 36px; height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--c1), var(--c2)); margin-bottom: 14px; }
.prose h3 { font-size: 1.25rem; margin: 2rem 0 .5rem; letter-spacing: -.02em; color: var(--c1); }
.prose p, .prose li { color: #d3dfd9; }
.prose strong { color: #fff; }
.prose a { color: var(--c1); }
.prose code { font: .92em ui-monospace, "SF Mono", Menlo, Consolas, monospace; background: rgba(255, 255, 255, .08); padding: .1em .4em; border-radius: 6px; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: .5rem; }
.callout { margin: 1.8rem 0; padding: 18px 22px; border-radius: 16px; border: 1px solid color-mix(in srgb, var(--c1) 40%, transparent); background: color-mix(in srgb, var(--c1) 8%, transparent); }
.callout p { margin: 0; }
.callout p + p { margin-top: .7rem; }
.formula { margin: 1.4rem 0; padding: 16px 22px; border-radius: 14px; background: rgba(255, 255, 255, .05); border: 1px solid var(--border); font: 1.02rem/1.6 ui-monospace, "SF Mono", Menlo, Consolas, monospace; color: #fff; overflow-x: auto; white-space: pre; }
.table-wrap { overflow-x: auto; margin: 1.4rem 0; border: 1px solid var(--border); border-radius: 14px; }
.prose table { width: 100%; border-collapse: collapse; font-size: .97rem; line-height: 1.5; }
.prose th, .prose td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.prose th { color: var(--c1); font-weight: 700; font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; background: rgba(255, 255, 255, .03); }
.prose tr:last-child td { border-bottom: 0; }
.prose td.num, .prose th.num { text-align: center; font-variant-numeric: tabular-nums; }
.prose td.on { color: var(--c1); font-weight: 700; }

.diagram { margin: 2.4rem -60px; padding: 18px 12px 12px; border-radius: 22px; border: 1px solid var(--border); background: linear-gradient(160deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02)); }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram figcaption { color: var(--muted); font-size: .92rem; line-height: 1.5; padding: 10px 14px 4px; }
@media (max-width: 960px) { .diagram { margin-left: 0; margin-right: 0; } }

.d-box { fill: rgba(255, 255, 255, .06); stroke: rgba(255, 255, 255, .28); stroke-width: 1.3; }
.d-box.hot { fill: color-mix(in srgb, var(--c1) 22%, transparent); stroke: var(--c1); }
.d-box.store { fill: color-mix(in srgb, var(--c2) 16%, transparent); stroke: color-mix(in srgb, var(--c2) 80%, transparent); }
.d-group { fill: rgba(255, 255, 255, .025); stroke: rgba(255, 255, 255, .14); stroke-width: 1.2; }
.d-group.dashed { stroke-dasharray: 7 6; stroke: color-mix(in srgb, var(--c1) 60%, transparent); }
.d-glabel { fill: var(--muted); font: 700 12px/1 -apple-system, system-ui, sans-serif; letter-spacing: .12em; }
.d-label { fill: #fff; font: 700 15px/1 -apple-system, system-ui, sans-serif; letter-spacing: -.01em; }
.d-sub { fill: #a9bab2; font: 500 12px/1 -apple-system, system-ui, sans-serif; }
.d-note { fill: #a9bab2; font: 500 12px/1 -apple-system, system-ui, sans-serif; }
.d-note.strong { fill: #fff; font-weight: 700; font-size: 14px; }
.d-arrow { fill: none; stroke: rgba(238, 243, 240, .7); stroke-width: 1.8; stroke-linejoin: round; }
.d-arrow.alt { stroke: var(--c2); }
.d-arrow.dashed { stroke-dasharray: 6 5; }
.d-head { fill: rgba(238, 243, 240, .85); }
.d-head2 { fill: var(--c2); }

/* Post footer navigation */
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 64px; }
.post-nav a { display: block; padding: 18px 20px; border-radius: 16px; border: 1px solid var(--border); background: var(--surface); text-decoration: none; color: var(--text); transition: border-color .25s, transform .35s var(--ease); }
.post-nav a:hover { border-color: var(--c1); transform: translateY(-3px); }
.post-nav small { display: block; color: var(--muted); letter-spacing: .1em; text-transform: uppercase; font-size: 11px; margin-bottom: 6px; }
.post-nav .next { text-align: right; }
@media (max-width: 600px) { .post-nav { grid-template-columns: 1fr; } .post-nav .next { text-align: left; } }

/* Blog index */
.blog-hero { padding: 18vh 0 6vh; position: relative; z-index: 1; }
.blog-hero h1 { font-size: clamp(2.6rem, 8vw, 6rem); margin: 0 0 18px; max-width: 12ch; }
.blog-hero p { color: #c1d0c9; font-size: 1.2rem; max-width: 52ch; }
.post-list { position: relative; z-index: 1; display: grid; gap: 18px; padding-bottom: 14vh; }
.post-card { position: relative; display: block; padding: clamp(22px, 3.5vw, 38px); border-radius: 26px; border: 1px solid var(--border); background: linear-gradient(160deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .02)); text-decoration: none; color: var(--text); overflow: hidden; transition: border-color .25s, transform .4s var(--ease); }
.post-card::before { content: ""; position: absolute; width: 460px; height: 460px; right: -140px; top: -200px; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--c1) 34%, transparent), transparent 65%); opacity: .7; transition: opacity .3s, transform .6s var(--ease); pointer-events: none; }
.post-card:hover { border-color: var(--c1); transform: translateY(-4px); }
.post-card:hover::before { opacity: 1; transform: scale(1.15); }
.post-card h2 { position: relative; font-size: clamp(1.5rem, 3.4vw, 2.3rem); letter-spacing: -.035em; line-height: 1.1; margin: 10px 0 12px; }
.post-card p { position: relative; color: #c1d0c9; margin: 0 0 14px; max-width: 60ch; }
.post-card .meta { position: relative; color: var(--muted); font-size: 14px; margin: 0; }
.post-card .tags { position: relative; margin: 0; }

/* Chat-style post */
.chat { display: grid; gap: 14px; margin: 2rem 0; }
.msg { max-width: 88%; padding: 14px 18px 16px; border-radius: 20px; border: 1px solid var(--border); background: rgba(255, 255, 255, .05); }
.msg p { margin: 0; color: #e6eee9; line-height: 1.65; }
.msg .who { display: block; margin-bottom: 4px; font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.msg.me { justify-self: start; border-bottom-left-radius: 6px; }
.msg.ai { justify-self: end; border-bottom-right-radius: 6px; background: color-mix(in srgb, var(--c1) 12%, transparent); border-color: color-mix(in srgb, var(--c1) 40%, transparent); }
.msg.ai .who { color: var(--c1); }
@media (max-width: 600px) { .msg { max-width: 96%; } }