/* Blog — pure white & black, Inter + JetBrains Mono.
   Newsreader serif appears only inside blockquote.serif / .pullquote. */

/* Scroll-padding so anchor jumps don't sit under the sticky nav */
html { scroll-padding-top: 80px; }

.blog-hero {
    padding: 12rem 5% 3rem;   /* generous top breathing room above the H1 */
    max-width: 1100px;
    margin: 0 auto;
}
.blog-hero .eyebrow {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    text-transform: uppercase;
    letter-spacing: var(--ls-section);
    color: var(--fg-3);
    margin-bottom: 2rem;
    display: inline-block;
}
.blog-hero h1 {
    font-family: var(--font-sans);
    font-weight: var(--fw-extrabold);
    font-size: clamp(2.4rem, 5vw, 4rem);
    line-height: var(--lh-tighter);
    letter-spacing: var(--ls-tightest);
    max-width: 22ch;
    margin-bottom: 1.5rem;
    color: var(--fg-1);
}
.blog-hero .lede {
    font-family: var(--font-sans);
    font-weight: var(--fw-normal);
    font-size: 1.15rem;
    line-height: 1.6;
    color: var(--fg-2);
    max-width: 60ch;
}

/* ── Filter chip rows ────────────────────────────────── */
/* The global `nav` selector in redesign.css forces position: fixed;
   neutralize that here so the archive-controls flows in-document. */
nav.archive-controls {
    position: static;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 0;
    z-index: auto;
    height: auto;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 5%;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.control-row {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 1.25rem;
    align-items: center;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border);
}
.control-row:last-child { border-bottom: 1px solid var(--border); }
.control-label {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    text-transform: uppercase;
    letter-spacing: var(--ls-section);
    color: var(--fg-3);
}
.control-chips {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.chip {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--fg-2);
    background: transparent;
    border: 1px solid var(--border);
    padding: 0.4rem 0.7rem;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
    border-radius: 0;
}
.chip:hover { border-color: var(--border-hover); color: var(--fg-1); }
.chip.is-active {
    background: var(--fg-1);
    color: var(--fg-invert);
    border-color: var(--fg-1);
}

/* ── Archive listing ─────────────────────────────────── */
.blog-archive {
    padding: 2.5rem 5% 5rem;
    max-width: 1100px;
    margin: 0 auto;
}
.year-group {
    padding: 1.5rem 0 0.5rem;
}
.year-group + .year-group { margin-top: 1rem; }
.year-label {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-md);
    font-weight: var(--fw-medium);
    letter-spacing: 0.06em;
    color: var(--fg-3);
    margin: 1rem 0 0.5rem;
    padding-bottom: 0.5rem;
}

.post-list { list-style: none; }

.post-card {
    border-top: 1px solid var(--border);
}
.post-card:last-child { border-bottom: 1px solid var(--border); }

/* Two-column card: meta | body (with optional thumbnail INSIDE .post-body's
   first row so the layout never auto-flows children into wrong cells) */
.post-card .post-link {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 2rem;
    align-items: start;
    padding: 1.5rem 0 1.5rem 1rem;
    color: inherit;
    text-decoration: none;
    border-left: 2px solid transparent;
    margin-left: -1rem;
    transition: border-left-color 0.15s ease, background 0.15s ease;
}
.post-card .post-link:hover {
    border-left-color: var(--fg-1);
    background: var(--bg-card);
}

.post-meta {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    color: var(--fg-3);
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    align-items: flex-start;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}
.post-meta time { color: var(--fg-3); }
.post-meta .meta-dot { display: none; }   /* dots redundant in stacked layout */
.post-meta .post-readtime { color: var(--fg-3); }
.post-meta .post-cat {
    color: var(--fg-2);
    border: 1px solid var(--border);
    padding: 0.15rem 0.5rem;
    letter-spacing: 0.08em;
    font-size: 0.62rem;
    margin-top: 0.15rem;
}

@media (max-width: 800px) {
    .post-meta { flex-direction: row; gap: 0.75rem; flex-wrap: wrap; align-items: center; }
    .post-meta .meta-dot { display: inline; opacity: 0.5; }
    .post-meta .post-cat { margin-top: 0; }
}

.post-body {
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.post-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 160px;
    gap: 2rem;
    align-items: start;
}
.post-row.no-thumb { grid-template-columns: minmax(0, 1fr); }

.post-text { min-width: 0; }

.post-title {
    font-family: var(--font-sans);
    font-weight: var(--fw-bold);
    font-size: clamp(1.15rem, 1.5vw, 1.3rem);
    line-height: 1.25;
    letter-spacing: -0.015em;
    color: var(--fg-1);
    margin: 0 0 0.5rem 0;
}
.post-card .post-link:hover .post-title { color: var(--fg-1); }

.post-excerpt {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--fg-2);
    max-width: 68ch;
}

.post-thumb {
    width: 160px;
    aspect-ratio: 16 / 10;
    border: 1px solid var(--border);
    overflow: hidden;
    background: var(--bg-subtle);
    flex-shrink: 0;
}
.post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
    display: block;
}
.post-card .post-link:hover .post-thumb img { filter: grayscale(0%); }

.archive-empty {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-md);
    color: var(--fg-3);
    text-align: center;
    padding: 4rem 0;
    letter-spacing: 0.04em;
}

@media (max-width: 800px) {
    .blog-hero { padding: 8rem 6% 2rem; }
    .archive-controls { padding: 0 6%; }
    .control-row {
        grid-template-columns: 1fr;
        gap: 0.6rem;
        padding: 0.85rem 0;
    }
    .blog-archive { padding: 2rem 6% 4rem; }

    .post-card .post-link {
        grid-template-columns: 1fr;
        gap: 0.75rem;
        padding: 1.25rem 0 1.25rem 0.75rem;
        margin-left: -0.75rem;
    }
    .post-row { grid-template-columns: 1fr; gap: 1rem; }
    .post-thumb { width: 100%; max-width: 280px; }
    .post-meta { font-size: 0.65rem; }
    .post-title { font-size: 1.1rem; }
}

/* ── Post page ───────────────────────────────────────── */
.post {
    max-width: 720px;
    margin: 0 auto;
    padding: 9rem 5% 5rem;
}
.post-header { margin-bottom: 3rem; }
.post-header .eyebrow {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    text-transform: uppercase;
    letter-spacing: var(--ls-section);
    color: var(--fg-3);
    margin-bottom: 2rem;
    display: inline-block;
}
.post-header .eyebrow a {
    color: var(--fg-3);
    text-decoration: none;
    transition: color 0.2s ease;
}
.post-header .eyebrow a:hover { color: var(--fg-1); }

.post-h1 {
    font-family: var(--font-sans);
    font-weight: var(--fw-extrabold);
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    line-height: var(--lh-tighter);
    letter-spacing: var(--ls-tightest);
    color: var(--fg-1);
    margin-bottom: 1.5rem;
}

.post-byline {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    color: var(--fg-3);
    display: flex;
    gap: 0.6rem;
    align-items: center;
    flex-wrap: wrap;
    letter-spacing: 0.04em;
}
.post-byline .byline-author { color: var(--fg-2); font-weight: var(--fw-medium); }
.post-byline time { text-transform: uppercase; }
.post-byline .byline-sep { color: var(--fg-3); opacity: 0.6; }

.post-hero-image {
    margin: 0 auto 3rem;
    max-width: 880px;
}
.post-hero-image img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid var(--border);
}

/* Body content — long-form reading column */
.post-content {
    font-family: var(--font-sans);
    font-size: 1.08rem;
    line-height: 1.75;
    color: var(--fg-2);
}
.post-content > * + * { margin-top: 1.3em; }
.post-content p { color: var(--fg-2); }
.post-content strong { color: var(--fg-1); font-weight: var(--fw-semibold); }
.post-content em { font-style: italic; color: var(--fg-1); }

.post-content h2, .post-content h3, .post-content h4 {
    font-family: var(--font-sans);
    color: var(--fg-1);
    letter-spacing: var(--ls-tight);
    line-height: 1.25;
    margin-top: 2.5em;
    margin-bottom: 0.6em;
}
.post-content h2 { font-size: 1.55rem; font-weight: var(--fw-bold); }
.post-content h3 { font-size: 1.25rem; font-weight: var(--fw-semibold); }
.post-content h4 { font-size: 1.05rem; font-weight: var(--fw-semibold); }

.post-content a {
    color: var(--fg-1);
    text-decoration: none;
    border-bottom: 1px solid var(--border-hover);
    transition: border-color 0.2s ease;
}
.post-content a:hover { border-color: var(--fg-1); }

.post-content blockquote {
    border-left: 2px solid var(--fg-1);
    padding: 0.4rem 0 0.4rem 1.5rem;
    margin: 2em 0;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--fg-1);
}
.post-content blockquote p { color: var(--fg-1); }

.post-content ul, .post-content ol {
    padding-left: 1.4em;
}
.post-content li { margin-bottom: 0.6em; }
.post-content li::marker { color: var(--fg-3); }

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.08em 0.4em;
}
.post-content pre {
    font-family: var(--font-mono);
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    padding: 1.25rem 1.5rem;
    overflow-x: auto;
    font-size: 0.88rem;
    line-height: 1.55;
    margin: 1.6em 0;
}
.post-content pre code { background: none; border: 0; padding: 0; }

.post-content img, .post-content figure img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1.6em auto;
    border: 1px solid var(--border);
}
.post-content figcaption {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    color: var(--fg-3);
    text-align: center;
    margin-top: 0.6em;
    letter-spacing: 0.04em;
}

.post-content hr {
    border: 0;
    border-top: 1px solid var(--border);
    max-width: 200px;
    margin: 2.5em auto;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6em 0;
    font-size: 0.95rem;
}
.post-content th, .post-content td {
    border: 1px solid var(--border);
    padding: 0.7rem 1rem;
    text-align: left;
    vertical-align: top;
}
.post-content th {
    font-family: var(--font-sans);
    font-weight: var(--fw-semibold);
    color: var(--fg-1);
    background: var(--bg-subtle);
}

.post-footer {
    margin-top: 5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.post-back {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    text-transform: uppercase;
    letter-spacing: var(--ls-section);
    color: var(--fg-3);
    text-decoration: none;
    transition: color 0.2s ease;
}
.post-back:hover { color: var(--fg-1); }
.post-foot-meta {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    color: var(--fg-3);
    letter-spacing: 0.04em;
}

/* ── Site footer (shared) ────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 4rem 5% 3rem;
    background: var(--bg-subtle);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
}
.footer-brand {
    font-family: var(--font-sans);
    font-weight: var(--fw-extrabold);
    font-size: 1.1rem;
    color: var(--fg-1);
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}
.footer-tag {
    font-family: var(--font-sans);
    color: var(--fg-2);
    font-size: 0.9rem;
    line-height: 1.5;
    max-width: 30ch;
}
.footer-label {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    text-transform: uppercase;
    letter-spacing: var(--ls-section);
    color: var(--fg-3);
    margin-bottom: 1rem;
}
.footer-col a {
    display: block;
    color: var(--fg-2);
    text-decoration: none;
    font-size: 0.92rem;
    margin-bottom: 0.5rem;
    transition: color 0.15s ease;
}
.footer-col a:hover { color: var(--fg-1); }
.footer-fineprint {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--fs-mono-sm);
    color: var(--fg-3);
    margin-top: 1rem;
    letter-spacing: 0.04em;
}
@media (max-width: 800px) {
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
}