/* ═══════════════════════════════════════════════════════════════════════
   RANKINE KNOWLEDGE HUB — ARTICLE COMPONENTS
   Extends modern.css. Shared across all knowledge-hub/*/*.html articles.
   Collapses the article template's recurring patterns (icon-card grids,
   ranked lists, two-column comparisons, decision-gate checklists,
   numbered step timelines, score bars, references, sidebar) into one
   reused set — same conventions as modern.css (hairline borders, mono
   uppercase labels, no radius/shadow/glow).
═══════════════════════════════════════════════════════════════════════ */

/* ── Breadcrumb + type badge (sits in hero-meta row) ────────────────── */
.art-crumb a { color: var(--paper-on-dark-soft); transition: color 0.2s; }
.art-crumb a:hover { color: var(--paper-on-dark); }
.art-crumb span { color: var(--copper-lt); margin-inline: 0.5rem; }

/* ── Article layout: content + sticky sidebar ───────────────────────── */
.art-layout { display: grid; grid-template-columns: 1fr 300px; gap: clamp(2.5rem, 5vw, 5rem); align-items: start; }
@media (max-width: 980px) { .art-layout { grid-template-columns: 1fr; } }

/* ── Section (eyebrow + h2 + body) ───────────────────────────────────── */
.art-section { padding-block: clamp(2.5rem, 5vw, 3.5rem); border-top: 1px solid var(--line); }
.art-section:first-child { border-top: none; padding-top: 0; }
.art-eyebrow { font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--copper); margin-bottom: 0.9rem; }
.art-h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 2.8vw, 2.3rem); line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 1.25rem; }
.art-h2 em { font-style: normal; color: var(--copper); }
.art-body { font-size: 0.97rem; line-height: 1.78; color: var(--ink-soft); max-width: 72ch; }
.art-body + .art-body { margin-top: 1.1rem; }
.art-body strong { color: var(--ink); font-weight: 600; }
.art-body em { font-style: italic; }

/* ── Pull quote (reuses about.html's origin-callout convention) ─────── */
.art-quote { border-left: 2px solid var(--copper); padding-left: clamp(1.1rem, 2.5vw, 1.75rem); margin-block: clamp(1.75rem, 3vw, 2.5rem); }
.art-quote p { font-family: var(--font-display); font-weight: 520; font-size: clamp(1.15rem, 1.9vw, 1.5rem); line-height: 1.35; letter-spacing: -0.015em; max-width: 44ch; }
.art-quote cite { display: block; margin-top: 0.85rem; font-family: var(--font-mono); font-size: 0.66rem; font-style: normal; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); }

/* ── Infographic wrapper (bordered container for any block below) ───── */
.art-block { border: 1px solid var(--line); margin-top: clamp(1.75rem, 3vw, 2.5rem); }
.art-block-head { display: flex; align-items: baseline; gap: 1rem; padding: 1.1rem 1.4rem; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.art-block-head .lbl { font-family: var(--font-mono); font-size: 0.64rem; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase; color: var(--copper); }
.art-block-head .ttl { font-family: var(--font-display); font-weight: 600; font-size: 1rem; letter-spacing: -0.01em; }
.art-block-body { padding: clamp(1.25rem, 2.5vw, 1.75rem) 1.4rem; }
.art-block-note { font-size: 0.85rem; color: var(--ink-soft); line-height: 1.65; margin-bottom: 1.1rem; }

/* ── Icon-card grid: handles domain tiles / pillars / value cards / etc.
      Grid column count set per-instance via inline style or modifier. ── */
.art-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line-faint); border-left: 1px solid var(--line-faint); }
.art-card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.art-card { padding: clamp(1.25rem, 2.2vw, 1.6rem); border-right: 1px solid var(--line-faint); border-bottom: 1px solid var(--line-faint); }
.art-card .num { font-family: var(--font-mono); font-size: 0.64rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--copper); display: block; margin-bottom: 0.6rem; }
.art-card h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; letter-spacing: -0.01em; margin-bottom: 0.55rem; line-height: 1.25; }
.art-card p { font-size: 0.85rem; line-height: 1.65; color: var(--ink-soft); }
@media (max-width: 640px) { .art-card-grid, .art-card-grid.cols-3 { grid-template-columns: 1fr; } }

/* ── Ranked / badge list: handles applications-list, patterns-list, etc ─ */
.art-ranked { border-top: 1px solid var(--line-faint); }
.art-rank-row { display: grid; grid-template-columns: 1fr auto; gap: 0.75rem 1.5rem; align-items: baseline; padding-block: 1.1rem; border-bottom: 1px solid var(--line-faint); }
.art-rank-row h4 { font-family: var(--font-display); font-weight: 600; font-size: 1rem; letter-spacing: -0.01em; margin-bottom: 0.4rem; }
.art-rank-row p { font-size: 0.87rem; line-height: 1.65; color: var(--ink-soft); grid-column: 1 / -1; }
.art-rank-badge { font-family: var(--font-mono); font-size: 0.62rem; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--copper); border: 1px solid var(--line); padding: 0.3rem 0.65rem; white-space: nowrap; justify-self: end; }

/* ── Two-column comparison: handles diff-cols, contrast-grid, misuse, etc ─ */
.art-compare { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-faint); }
.art-compare-col { padding: clamp(1.25rem, 2.5vw, 1.75rem); border-left: 1px solid var(--line-faint); }
.art-compare-col:first-child { border-left: none; }
.art-compare-col .lbl { font-family: var(--font-mono); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase; color: var(--ink-soft); display: block; margin-bottom: 1rem; }
.art-compare-col.is-positive .lbl { color: var(--copper); }
.art-compare-items { display: flex; flex-direction: column; gap: 0.7rem; }
.art-compare-items li { font-size: 0.87rem; line-height: 1.6; color: var(--ink-soft); list-style: none; display: flex; gap: 0.6rem; align-items: baseline; }
.art-compare-items li::before { content: '—'; color: var(--copper); flex-shrink: 0; }
@media (max-width: 640px) { .art-compare { grid-template-columns: 1fr; } .art-compare-col { border-left: none; border-top: 1px solid var(--line-faint); } .art-compare-col:first-child { border-top: none; } }

/* ── Decision gate / checklist: handles practical-block, checklist, etc ── */
.art-gate-items { display: flex; flex-direction: column; }
.art-gate-item { display: flex; gap: 1rem; align-items: baseline; padding-block: 0.9rem; border-bottom: 1px solid var(--line-faint); }
.art-gate-item:last-child { border-bottom: none; }
.art-gate-item .mark { font-family: var(--font-mono); font-size: 0.72rem; color: var(--copper); flex-shrink: 0; }
.art-gate-item p { font-size: 0.9rem; line-height: 1.6; color: var(--ink-soft); }

/* ── Numbered step timeline: handles measurement-steps, workflow, etc ─── */
.art-steps { border-top: 1px solid var(--line-faint); }
.art-step-row { display: grid; grid-template-columns: 56px 1fr; gap: 1.25rem; padding-block: 1.1rem; border-bottom: 1px solid var(--line-faint); }
.art-step-row .n { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500; color: var(--copper); }
.art-step-row h4 { font-family: var(--font-display); font-weight: 600; font-size: 0.98rem; letter-spacing: -0.01em; margin-bottom: 0.35rem; }
.art-step-row p { font-size: 0.87rem; line-height: 1.62; color: var(--ink-soft); }
.art-step-row .mins { font-family: var(--font-mono); font-size: 0.62rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.4rem; display: inline-block; }

/* ── Score / readiness bars: handles readiness-spectrum, dim-bar, etc ─── */
.art-scores { display: flex; flex-direction: column; gap: 1.1rem; }
.art-score-row .top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.45rem; gap: 1rem; }
.art-score-row .name { font-size: 0.9rem; font-weight: 600; color: var(--ink); }
.art-score-row .val { font-family: var(--font-mono); font-size: 0.72rem; color: var(--copper); flex-shrink: 0; }
.art-score-track { height: 3px; background: var(--line-faint); }
.art-score-fill { height: 100%; background: var(--copper); }
.art-score-row .note { font-size: 0.82rem; color: var(--ink-soft); margin-top: 0.4rem; line-height: 1.55; }

/* ── References ──────────────────────────────────────────────────────── */
.art-refs { border-top: 1px solid var(--line); padding-top: clamp(1.75rem, 3vw, 2.5rem); margin-top: clamp(1.75rem, 3vw, 2.5rem); }
.art-refs .lbl { font-family: var(--font-mono); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase; color: var(--copper); margin-bottom: 1rem; display: block; }
.art-refs ol { padding-left: 1.2rem; display: flex; flex-direction: column; gap: 0.6rem; }
.art-refs li { font-size: 0.85rem; line-height: 1.65; color: var(--ink-soft); }

/* ── Sidebar ─────────────────────────────────────────────────────────── */
.art-sidebar { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 1.5rem; }
@media (max-width: 980px) { .art-sidebar { position: static; } }
.art-side-card { border: 1px solid var(--line); }
.art-side-head { font-family: var(--font-mono); font-size: 0.64rem; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase; color: var(--ink-soft); padding: 0.9rem 1.1rem; border-bottom: 1px solid var(--line); }
.art-side-body { padding: 1.1rem; }
.art-progress-track { height: 3px; background: var(--line-faint); margin-bottom: 0.6rem; }
.art-progress-fill { height: 100%; background: var(--copper); width: 0%; transition: width 0.1s linear; }
.art-progress-label { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.62rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.05em; }
.art-meta-item { display: flex; align-items: baseline; gap: 0.6rem; padding-block: 0.6rem; border-bottom: 1px solid var(--line-faint); }
.art-meta-item:last-child { border-bottom: none; }
.art-meta-item .dot { width: 5px; height: 5px; background: var(--copper); flex-shrink: 0; margin-top: 0.4em; }
.art-meta-item .main { font-size: 0.85rem; color: var(--ink); font-weight: 500; }
.art-meta-item .sub { font-size: 0.74rem; color: var(--ink-soft); margin-top: 0.15rem; }
.art-related { display: flex; flex-direction: column; }
.art-related-link { display: flex; gap: 0.7rem; padding-block: 0.85rem; border-bottom: 1px solid var(--line-faint); transition: color 0.2s; }
.art-related-link:last-child { border-bottom: none; }
.art-related-link:hover { color: var(--copper); }
.art-related-link .arrow { font-family: var(--font-mono); flex-shrink: 0; }
.art-related-tag { display: block; font-family: var(--font-mono); font-size: 0.6rem; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--copper); margin-bottom: 0.25rem; }
.art-related-link .txt { font-size: 0.85rem; line-height: 1.45; }
.art-side-back { display: block; width: 100%; text-align: left; font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.85rem 1.1rem; border-top: 1px solid var(--line); transition: color 0.2s; }
.art-side-back:hover { color: var(--copper); }

/* ── Top reading-progress bar (fixed, under nav) ─────────────────────── */
.art-progress-top { position: fixed; top: 0; left: 0; width: 0%; height: 2px; background: var(--copper); z-index: 1001; transition: width 0.1s linear; }

.art-side-cta p { font-size: 0.85rem; line-height: 1.65; color: var(--ink-soft); margin-bottom: 1rem; }

/* ── Article hero (dark, matches sec-dark) ──────────────────────────── */
.art-hero { background: var(--ink); color: var(--paper-on-dark); border-bottom: 1px solid var(--line); }
.art-hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 4vw, 4rem); align-items: center; padding-block: clamp(3rem, 6vw, 5rem); }
@media (max-width: 860px) { .art-hero-inner { grid-template-columns: 1fr; } }
.art-type-badge { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase; color: var(--copper-lt); border: 1px solid var(--line-dark); padding: 0.4rem 0.85rem; margin-bottom: 1.5rem; }
.art-type-badge .dot { width: 6px; height: 6px; background: var(--copper-lt); flex-shrink: 0; }
.art-title { font-family: var(--font-display); font-weight: 620; font-size: clamp(2rem, 4.4vw, 3.4rem); line-height: 1.06; letter-spacing: -0.025em; margin-bottom: 1.25rem; }
.art-title em { font-style: normal; color: var(--copper-lt); }
.art-dek { font-size: clamp(0.95rem, 1.3vw, 1.05rem); line-height: 1.75; color: var(--paper-on-dark-soft); max-width: 56ch; margin-bottom: clamp(1.75rem, 3vw, 2.25rem); }
.art-meta-row { display: flex; flex-wrap: wrap; gap: 0.5rem 0; border-top: 1px solid var(--line-dark); padding-top: 1.1rem; }
.art-meta-row .item { font-family: var(--font-mono); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--paper-on-dark-soft); }
.art-meta-row .item strong { color: var(--copper-lt); font-weight: 500; margin-right: 0.4rem; }
.art-meta-row .item:not(:last-child)::after { content: '/'; color: var(--line-dark); margin-inline: 1rem; }
.art-diagram-wrap { display: flex; align-items: center; justify-content: center; }
.art-diagram { width: 100%; max-width: 400px; }
@media (max-width: 860px) { .art-diagram-wrap { display: none; } }