/* ── The Brief — blog listing + article layout ─────────────────────────────
   Productionised from the founder's design bundles (team/design-reference/).
   Reuses tokens + components from style.css (blog-*, article-*, faq-*);
   this file only adds what the founder design introduces. */

/* ── Listing ─────────────────────────────────────────────────────────── */
.brief-filter-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.25rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 1.75rem; }
.brief-filter-chips { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.brief-filter-chip { cursor: pointer; padding: 0.4375rem 0.875rem; border-radius: 999px; font-size: 0.8125rem; font-weight: 500; color: var(--ink); background: transparent; border: 1px solid var(--line); font-family: inherit; white-space: nowrap; transition: border-color var(--transition); }
.brief-filter-chip:hover { border-color: var(--navy); }
.brief-filter-chip.on { font-weight: 700; color: #fff; background: var(--navy); border-color: var(--navy); }
.brief-filter-sort { display: flex; align-items: center; gap: 0.625rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); letter-spacing: 0.08em; white-space: nowrap; }
.brief-filter-sort strong { background: var(--surface); color: var(--ink); padding: 0.4375rem 0.875rem; border: 1px solid var(--line); border-radius: 6px; font-weight: 700; font-size: 0.75rem; }
.brief-card-byline { display: flex; align-items: center; justify-content: space-between; border-top: 1px dashed var(--line); padding-top: 0.75rem; margin-top: 0.25rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); letter-spacing: 0.04em; }
.brief-newsletter { background: var(--navy); color: #fff; border-radius: var(--radius-lg); padding: 1.75rem 2.25rem; display: grid; grid-template-columns: 1.2fr 1fr; gap: 2.25rem; align-items: center; position: relative; overflow: hidden; margin: 2.5rem 0 0.5rem; }
.brief-newsletter-eyebrow { font-size: 0.75rem; font-family: var(--font-mono); letter-spacing: 0.22em; color: var(--ochre); font-weight: 800; margin-bottom: 0.625rem; }
.brief-newsletter h2 { font-size: clamp(1.375rem, 2.5vw, 1.75rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; margin: 0; color: #fff; }
.brief-newsletter p { font-size: 0.875rem; margin: 0.625rem 0 0; opacity: 0.78; line-height: 1.5; color: #fff; }
.brief-newsletter-btn { background: var(--ochre); color: var(--ink); padding: 0.875rem 1.375rem; font-size: 0.8125rem; font-weight: 700; border-radius: 8px; text-decoration: none; white-space: nowrap; border: 0; cursor: pointer; font-family: inherit; }
.brief-newsletter-btn:hover { background: var(--gold-light); color: var(--ink); }
.brief-newsletter-btn:disabled { opacity: 0.6; cursor: default; }
.brief-newsletter-form { display: flex; align-items: center; gap: 0; background: var(--surface); border-radius: 10px; padding: 6px 6px 6px 18px; min-width: 0; }
.brief-newsletter-form input[type="email"] { border: 0; outline: none; background: transparent; flex: 1; min-width: 0; font-size: 0.875rem; color: var(--ink); font-family: inherit; padding: 0.75rem 0.5rem 0.75rem 0; }
.brief-newsletter-form input[type="email"]::placeholder { color: var(--grey-400); }
.brief-newsletter-status { font-size: 0.8125rem; margin: 0.625rem 0 0; color: #e8897b; font-weight: 600; }
.brief-newsletter-status.ok { color: #7fd6a4; }

/* ── Listing: radial page glow + masthead drama ──────────────────────── */
/* Radial sunburst page-glow. Painted as a container background (not an
   absolute element) so it can never widen the page / cause mobile x-scroll. */
.brief-listing { position: relative; overflow-x: clip; background: radial-gradient(1100px 1100px at 50% -280px, var(--navy-soft) 0%, rgba(245,230,194,0) 60%) no-repeat; }
/* Restore the design's 76px masthead (scoped so it never touches hub pages). */
.brief-masthead h1 { font-size: clamp(2.75rem, 8vw, 4.75rem); line-height: 0.97; letter-spacing: -0.035em; font-weight: 700; max-width: 940px; }
.brief-masthead .hub-subtitle { font-size: 1.0625rem; }
.brief-follow { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.brief-follow:hover { color: var(--navy); }

/* ── Listing: featured hero-number panel (SVG, data-driven) ──────────── */
.brief-listing .blog-featured-visual { min-height: 360px; padding: 0; }
.brief-listing .blog-featured-eyebrow { position: absolute; top: 1.5rem; left: 1.5rem; z-index: 2; }
.brief-listing .blog-featured-visual svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* ── Listing: pager + more-coming affordance ─────────────────────────── */
.brief-pager { display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-top: 2rem; }
.brief-pager-edge { padding: 0.5rem 0.875rem; border: 1px solid var(--line); border-radius: 6px; font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink); letter-spacing: 0.08em; font-weight: 700; cursor: pointer; }
.brief-pager-edge.is-disabled { color: var(--muted); cursor: default; }
.brief-pager-num { padding: 0.5rem 0.875rem; border: 1px solid var(--line); border-radius: 6px; font-family: var(--font-mono); font-size: 0.8125rem; font-weight: 700; color: var(--ink); cursor: pointer; }
.brief-pager-num.on { background: var(--navy); border-color: var(--navy); color: #fff; }
.brief-more-coming { margin-top: 2rem; text-align: center; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; color: var(--muted); text-transform: uppercase; }

/* ── Article hero (v2 — restructured, punchier) ──────────────────────── */
/* Row 1: category kicker link (ochre mono code + navy category name, 3px
   ochre underline) and a live "N IN THIS CATEGORY" count. */
.article-hero-kicker { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.375rem; flex-wrap: wrap; }
.article-hero-cat { display: inline-flex; align-items: baseline; gap: 0.625rem; border-bottom: 3px solid var(--ochre); padding-bottom: 0.375rem; text-decoration: none; }
.article-hero-cat:hover { color: inherit; }
.article-hero-cat:hover .article-hero-cat-name { color: var(--navy); }
.article-hero-cat-abbr { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--ochre); font-weight: 800; letter-spacing: 0.12em; }
.article-hero-cat-name { font-family: var(--font-display); font-size: 1.25rem; color: var(--ink); font-weight: 800; letter-spacing: -0.01em; }
.article-hero-cat-count { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--muted); letter-spacing: 0.1em; font-weight: 700; }
/* Row 2: featured chip + read time + updated, closed with a hairline divider. */
.article-hero .article-hero-meta { gap: 1rem; padding-bottom: 1.125rem; border-bottom: 1px solid var(--line); margin-bottom: 1.625rem; }
.article-hero .article-hero-tag { font-weight: 800; letter-spacing: 0.1em; }
.article-hero .article-hero-tag--featured { background: var(--navy); color: #fff; }
.article-hero .article-hero-meta-text { font-weight: 700; }

/* ── Article layout: TOC rail · body · side rail ─────────────────────── */
.brief-layout { display: grid; grid-template-columns: 180px minmax(0, 720px) 220px; gap: 3rem; align-items: start; margin: 2rem 0; }
.brief-toc { position: sticky; top: 5.75rem; font-family: var(--font-mono); font-size: 0.75rem; }
.brief-toc-eyebrow { color: var(--muted); letter-spacing: 0.16em; font-weight: 700; margin-bottom: 0.875rem; text-transform: uppercase; }
.brief-toc a { display: flex; gap: 0.625rem; padding: 0.5rem 0 0.5rem 0.625rem; color: var(--muted); font-weight: 500; border-left: 2px solid transparent; margin-left: -0.75rem; line-height: 1.4; text-decoration: none; }
.brief-toc a:hover, .brief-toc a.on { color: var(--ink); font-weight: 700; border-left-color: var(--ochre); }
.brief-toc a .n { color: var(--ochre); font-weight: 800; }
.brief-toc-time-label { color: var(--muted); letter-spacing: 0.16em; font-weight: 700; margin: 2rem 0 0.875rem; text-transform: uppercase; }
.brief-toc-time { font-size: 2rem; color: var(--ink); font-weight: 800; letter-spacing: -0.02em; }
.brief-progress-track { height: 4px; background: var(--line); border-radius: 2px; margin-top: 0.5rem; }
.brief-progress-fill { height: 4px; width: 0%; background: var(--ochre); border-radius: 2px; }
.brief-author-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--ochre); color: var(--ink); display: grid; place-items: center; font-weight: 800; font-size: 0.8125rem; font-family: var(--font-mono); letter-spacing: 0.04em; flex-shrink: 0; }
.brief-author-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.brief-author-name { font-size: 0.8125rem; font-weight: 700; }
.brief-author-role { font-size: 0.6875rem; color: var(--muted); }
.brief-author-bio { font-size: 0.75rem; color: var(--muted); line-height: 1.55; }
.brief-rail-calc { padding: 0.6875rem 0; border-top: 1px dashed var(--line); font-size: 0.8125rem; font-weight: 600; display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; color: var(--ink); text-decoration: none; }
.brief-rail-calc:first-of-type { border-top: none; }
.brief-rail-calc:hover { color: var(--navy); }
.brief-rail-calc .arr { color: var(--ochre); font-family: var(--font-mono); font-size: 0.6875rem; font-weight: 800; }
.brief-share-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.375rem; }
.brief-share-grid a, .brief-share-grid button { background: var(--surface-alt); color: var(--ink); padding: 0.625rem 0; text-align: center; font-weight: 800; font-size: 0.6875rem; border-radius: 6px; font-family: var(--font-mono); letter-spacing: 0.12em; text-decoration: none; border: 0; cursor: pointer; }
.brief-share-grid a:hover, .brief-share-grid button:hover { background: var(--line); }

/* ── Hero stat panel (navy) ──────────────────────────────────────────── */
.brief-hero-panel { background: var(--navy); border-radius: var(--radius-lg); padding: 2.5rem 3rem; position: relative; overflow: hidden; margin: 2.25rem 0 0.5rem; }
.brief-hero-panel::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 80% 20%, rgba(245, 230, 194, 0.19) 0%, transparent 55%); }
.brief-hero-panel > * { position: relative; }
.brief-hero-kicker { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--ochre); letter-spacing: 0.22em; font-weight: 800; margin-bottom: 0.5rem; }
.brief-hero-stats { display: flex; align-items: flex-end; gap: 2.5rem 3.5rem; margin-top: 1.25rem; flex-wrap: wrap; }
.brief-hero-stat-label { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--navy-soft); letter-spacing: 0.14em; margin-bottom: 0.375rem; text-transform: uppercase; }
.brief-hero-stat-value { font-family: var(--font-mono); font-size: clamp(2.25rem, 5vw, 3.5rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1; color: var(--ochre); }
.brief-hero-stat-value.soft { color: var(--navy-soft); }
.brief-hero-stat-value.flag { color: #e8897b; }
.brief-hero-stat-note { font-size: 0.8125rem; color: rgba(255,255,255,0.67); margin-top: 0.5rem; }
.brief-hero-source { margin-top: 2rem; font-family: var(--font-mono); font-size: 0.6875rem; color: var(--navy-soft); letter-spacing: 0.12em; text-transform: uppercase; }

/* ── Embed / reuse note ──────────────────────────────────────────────── */
.brief-embed-note { background: var(--surface-alt); border: 1px dashed var(--line); border-radius: 10px; padding: 1rem 1.375rem; margin: 1.75rem 0; font-size: 0.875rem; color: var(--muted); line-height: 1.6; }
.brief-embed-note strong { color: var(--ink); }

/* ── Keep reading ────────────────────────────────────────────────────── */
.brief-keep-reading { padding: 2.5rem 0 0.5rem; border-top: 1px solid var(--line); margin-top: 3rem; }
.brief-keep-reading-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1.375rem; }
.brief-keep-reading-head h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -0.025em; font-weight: 700; margin: 0; }
.brief-keep-reading-head span { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--muted); letter-spacing: 0.12em; font-weight: 700; }
.brief-keep-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.brief-keep-card { text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 1.125rem; display: flex; flex-direction: column; gap: 0.625rem; transition: border-color var(--transition), transform var(--transition); }
.brief-keep-card:hover { border-color: var(--navy); transform: translateY(-2px); color: var(--ink); }
.brief-keep-card-meta { display: flex; justify-content: space-between; align-items: center; }
.brief-keep-card-tag { background: var(--navy); color: #fff; padding: 0.1875rem 0.5rem; border-radius: 4px; font-family: var(--font-mono); font-size: 0.625rem; font-weight: 700; letter-spacing: 0.08em; }
.brief-keep-card-min { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--muted); letter-spacing: 0.08em; font-weight: 700; }
.brief-keep-card h3 { font-size: 1rem; font-weight: 700; letter-spacing: -0.015em; line-height: 1.3; margin: 0; }
.brief-keep-card p { font-size: 0.8125rem; color: var(--muted); line-height: 1.45; margin: 0; }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 1080px) {
  .brief-layout { grid-template-columns: minmax(0, 1fr) 220px; }
  .brief-toc { display: none; }
}
@media (max-width: 860px) {
  .brief-layout { grid-template-columns: 1fr; gap: 1.75rem; }
  .brief-rail-article { position: static; }
  .brief-newsletter { grid-template-columns: 1fr; gap: 1.25rem; padding: 1.5rem 1.375rem; }
  .brief-filter-bar { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .brief-keep-grid { grid-template-columns: 1fr; }
  .brief-hero-panel { padding: 1.75rem 1.375rem; }
  .brief-hero-stats { gap: 1.5rem 2rem; }
}

/* Anchor scroll stops at the bottom of the sticky site header (founder, 23 Jul) */
main [id] { scroll-margin-top: 5.5rem; }

/* ══ v2 components (session 35) ═══════════════════════════════════════════ */

/* ── Hero visual banner — branded navy slot; real photos drop in later ──── */
.brief-hero-visual { margin: 2rem 0 0.5rem; }
.brief-hero-visual-slot { position: relative; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); height: clamp(220px, 34vw, 440px); background: var(--navy); }
.brief-hero-visual-slot::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 78% 24%, rgba(245, 230, 194, 0.20) 0%, transparent 55%); }
.brief-hero-visual-cap { position: absolute; bottom: 1.25rem; font-family: var(--font-mono); font-size: 0.6875rem; font-weight: 800; color: #fff; background: var(--navy); border: 1px solid rgba(255, 255, 255, 0.22); padding: 0.375rem 0.75rem; border-radius: 6px; }
.brief-hero-visual-cap--left { left: 1.5rem; letter-spacing: 0.18em; }
.brief-hero-visual-cap--right { right: 1.5rem; font-weight: 700; letter-spacing: 0.12em; }

/* ── Left rail — More in The Brief ─────────────────────────────────────── */
.brief-more-title { color: var(--muted); letter-spacing: 0.16em; font-weight: 700; margin: 2rem 0 0.75rem; text-transform: uppercase; font-family: var(--font-mono); font-size: 0.75rem; }
.brief-more-row { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; padding: 0.5625rem 0; border-top: 1px solid var(--line); color: var(--ink); text-decoration: none; font-weight: 600; }
.brief-more-row:hover { color: var(--navy); }
.brief-more-name { font-family: "Plus Jakarta Sans", system-ui, sans-serif; font-size: 0.8125rem; }
.brief-more-count { color: var(--muted); font-size: 0.6875rem; font-weight: 700; }
.brief-more-all { display: block; margin-top: 0.75rem; color: var(--navy); font-size: 0.6875rem; font-weight: 800; letter-spacing: 0.12em; text-decoration: none; }
.brief-more-all:hover { color: var(--ochre); }

/* ── Browse more — rich suite category nav ─────────────────────────────── */
.brief-catnav { border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; margin: 2.5rem 0 0.5rem; background: var(--surface); }
.brief-catnav-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 1.25rem 1.5rem 1rem; }
.brief-catnav-eyebrow { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--muted); letter-spacing: 0.18em; text-transform: uppercase; font-weight: 700; }
.brief-catnav-all { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--navy); letter-spacing: 0.12em; font-weight: 800; text-decoration: none; white-space: nowrap; }
.brief-catnav-all:hover { color: var(--ochre); }
.brief-catnav-grid { display: grid; grid-template-columns: repeat(7, 1fr); border-top: 1px solid var(--line); }
.brief-catnav-card { display: flex; flex-direction: column; gap: 0.625rem; padding: 1.25rem 1.125rem 1.375rem; border-left: 1px solid var(--line); text-decoration: none; color: var(--ink); transition: background var(--transition); }
.brief-catnav-card:first-child { border-left: none; }
.brief-catnav-num { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ochre); font-weight: 800; letter-spacing: 0.12em; }
.brief-catnav-name { font-size: 1.0625rem; font-weight: 700; letter-spacing: -0.015em; line-height: 1.1; }
.brief-catnav-note { font-size: 0.71875rem; color: var(--muted); line-height: 1.35; height: 31px; overflow: hidden; }
.brief-catnav-count { font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.1em; font-weight: 700; color: var(--muted); }
.brief-catnav-card:hover, .brief-catnav-card.is-active { background: var(--navy); }
.brief-catnav-card:hover .brief-catnav-name, .brief-catnav-card:hover .brief-catnav-note,
.brief-catnav-card:hover .brief-catnav-num, .brief-catnav-card:hover .brief-catnav-count,
.brief-catnav-card.is-active .brief-catnav-name, .brief-catnav-card.is-active .brief-catnav-note,
.brief-catnav-card.is-active .brief-catnav-num, .brief-catnav-card.is-active .brief-catnav-count { color: #fff; }

/* ── Keep reading — thumbnail cards ───────────────────────────────────── */
.brief-keep-card { padding: 0; gap: 0; overflow: hidden; }
.brief-keep-thumb { position: relative; height: 150px; background: var(--surface-alt); overflow: hidden; }
.brief-keep-thumb svg { display: block; width: 100%; height: 100%; }
.brief-keep-thumb-tag { position: absolute; left: 0.75rem; top: 0.75rem; background: var(--navy); color: #fff; padding: 0.1875rem 0.5rem; border-radius: 4px; font-family: var(--font-mono); font-size: 0.625rem; font-weight: 700; letter-spacing: 0.08em; }
.brief-keep-body { padding: 1.125rem; display: flex; flex-direction: column; gap: 0.625rem; }
.brief-keep-body .brief-keep-card-meta { justify-content: flex-end; }

/* ── Suppress the JS-injected simple category nav on brief pages ─────────
   calculators.js inserts a plain .category-nav above the footer on every
   page; The Brief renders its own rich .brief-catnav instead. brief.css only
   loads on Brief pages, so this suppression is scoped to them. */
.category-nav { display: none !important; }

/* ── Responsive (v2 components) ───────────────────────────────────────── */
@media (max-width: 1080px) {
  .brief-catnav-grid { grid-template-columns: repeat(4, 1fr); }
  .brief-catnav-card:nth-child(4n+1) { border-left: none; }
  .brief-catnav-card:nth-child(n+5) { border-top: 1px solid var(--line); }
}
@media (max-width: 720px) {
  .brief-catnav-grid { grid-template-columns: repeat(2, 1fr); }
  .brief-catnav-card { border-left: none; }
  .brief-catnav-card:nth-child(n+3) { border-top: 1px solid var(--line); }
  .brief-catnav-card:nth-child(2n) { border-left: 1px solid var(--line); }
  .brief-catnav-head { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .brief-hero-visual-cap { font-size: 0.625rem; padding: 0.3125rem 0.5rem; }
  .brief-hero-visual-cap--left { left: 0.75rem; }
  .brief-hero-visual-cap--right { right: 0.75rem; }
}