/* ============ CASE STUDY DETAIL identity ============
     METAPHOR: annual-report / KPI dashboard.
     - 4-up KPI strip at the top — the numbers ARE the hero
     - "Fact sheet" sticky sidebar that follows the reader
     - Big challenge / solution / outcome split, not a long-form essay
     - Before/after comparison strip
     - Project timeline as a horizontal Gantt-style band
     - Stack-style data card mid-page (bar chart of revenue by month)
     - Quote treated as a full-bleed pulled card with portrait
     - "Reproduce this" recipe card at the end → links to relevant features
     */

  .crumb { padding: 20px 0 0; font-size: 13px; color: var(--fg-mute); display: flex; gap: 10px; align-items: center; }
  .crumb a { color: var(--fg-mute); }
  .crumb a:hover { color: var(--accent); }
  .crumb .sep { opacity: 0.4; }

  /* ===== TOP STRIP (case-file header) ===== */
  .file-strip {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
    margin-top: 20px;
    display: grid; grid-template-columns: auto 1fr auto auto auto auto; gap: 28px; align-items: center;
    font-family: "Geist Mono", monospace; font-size: 11px;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--fg-mute);
  }
  @media (max-width: 880px) { .file-strip { grid-template-columns: 1fr 1fr; row-gap: 12px; } }
  .file-strip .csid {
    color: var(--accent); border: 1px solid var(--accent);
    padding: 4px 10px; border-radius: 4px; letter-spacing: 0.14em;
  }
  .file-strip .ind-tag {
    background: oklch(0.59 0.22 27); color: var(--accent-ink);
    padding: 4px 10px; border-radius: 4px;
    letter-spacing: 0.12em;
  }
  .file-strip .label-cell b { color: var(--fg); display: block; font-family: "Geist"; font-size: 13px; letter-spacing: 0; text-transform: none; font-weight: 500; margin-top: 2px; }

  /* ===== TITLE BLOCK ===== */
  .cs-title {
    padding: 56px 0 40px;
    border-bottom: 1px solid var(--border);
    display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: end;
  }
  @media (max-width: 980px) { .cs-title { grid-template-columns: 1fr; } }
  .cs-title h1 {
    font-size: clamp(48px, 6.8vw, 96px); line-height: 0.96;
    letter-spacing: -0.035em; font-weight: 600;
    margin: 0 0 24px; max-width: 16ch;
  }
  .cs-title h1 em {
    font-family: "Instrument Serif", serif; font-style: italic; font-weight: 400;
    letter-spacing: -0.02em; color: var(--accent);
  }
  .cs-title p.lede {
    font-size: 20px; color: var(--fg-dim); margin: 0; line-height: 1.5;
    max-width: 56ch;
    padding-left: 18px;
    border-left: 3px solid var(--accent);
  }
  .cs-title .photo-thumb {
    aspect-ratio: 4/3;
    background:
      radial-gradient(circle at 25% 30%, color-mix(in oklch, var(--accent) 30%, transparent), transparent 55%),
      radial-gradient(circle at 75% 70%, color-mix(in oklch, var(--gold) 28%, transparent), transparent 55%),
      repeating-linear-gradient(135deg,
        color-mix(in oklch, var(--accent) 14%, var(--bg-card)) 0 14px,
        var(--bg-card) 14px 28px);
    border: 1px solid var(--border);
    position: relative; display: grid; place-items: center;
  }
  .cs-title .photo-thumb::after {
    content: "[ event photo · 1600 × 1200 ]";
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--fg-mute); letter-spacing: 0.04em;
    background: var(--bg); padding: 6px 12px; border: 1px solid var(--border); border-radius: 4px;
  }
  .cs-title .photo-thumb .pin {
    position: absolute; top: 14px; left: 14px;
    background: var(--fg); color: var(--bg);
    padding: 6px 12px;
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    letter-spacing: 0.2em; text-transform: uppercase;
  }

  /* ===== KPI HERO STRIP ===== */
  .kpi-strip {
    margin: 56px 0 24px;
    display: grid; grid-template-columns: repeat(4, 1fr);
    border: 1px solid var(--border-strong);
    background: var(--bg-elev);
    overflow: hidden;
  }
  @media (max-width: 880px) { .kpi-strip { grid-template-columns: repeat(2, 1fr); } }
  .kpi {
    padding: 28px 28px 32px;
    border-right: 1px solid var(--border);
    position: relative;
  }
  .kpi:nth-child(2), .kpi:nth-child(4) {
    /* visual rhythm — alternating subtle bg */
    background: color-mix(in oklch, var(--bg-card) 70%, transparent);
  }
  .kpi:last-child { border-right: 0; }
  .kpi .k {
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    color: var(--fg-mute); letter-spacing: 0.16em; text-transform: uppercase;
    margin-bottom: 14px;
  }
  .kpi .v {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 76px; line-height: 0.92; letter-spacing: -0.035em;
    color: var(--accent);
    margin-bottom: 8px;
  }
  .kpi .v small {
    font-family: "Geist Mono", monospace; font-style: normal;
    font-size: 14px; color: var(--fg-mute); letter-spacing: 0.02em;
    margin-left: 6px;
  }
  .kpi .lbl {
    font-size: 14px; color: var(--fg-dim); line-height: 1.4;
    max-width: 22ch;
  }
  .kpi .lbl b { color: var(--fg); font-weight: 500; }
  .kpi .delta {
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: oklch(0.66 0.14 145); letter-spacing: 0.04em;
    margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border);
    display: flex; gap: 6px; align-items: center;
  }
  .kpi .delta.down { color: var(--accent); }
  .kpi .delta .arr { font-size: 13px; }

  .source-note {
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--fg-mute); letter-spacing: 0.04em;
    margin: 6px 0 0; padding: 12px 0 0; border-top: 1px solid var(--border);
    display: grid; grid-template-columns: 1fr auto; gap: 16px;
  }
  .source-note a { color: var(--accent); }

  /* ===== MAIN GRID ===== */
  .main-grid {
    display: grid; grid-template-columns: 1fr 320px; gap: 64px;
    padding-top: 64px;
  }
  @media (max-width: 1080px) { .main-grid { grid-template-columns: 1fr; } }

  /* ===== STORY SECTIONS ===== */
  .section-card {
    border: 1px solid var(--border);
    background: var(--bg-elev);
    padding: 40px;
    margin-bottom: 24px;
    position: relative;
  }
  .section-card .corner {
    position: absolute; top: -1px; left: -1px;
    background: var(--accent); color: var(--accent-ink);
    padding: 8px 16px;
    font-family: "Geist Mono", monospace; font-size: 11px;
    letter-spacing: 0.18em; text-transform: uppercase;
  }
  .section-card h2 {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-weight: 400; font-size: clamp(34px, 4vw, 52px);
    line-height: 1.04; letter-spacing: -0.025em;
    color: var(--fg);
    margin: 40px 0 18px;
  }
  .section-card p {
    font-size: 17px; line-height: 1.65; color: var(--fg-dim);
    max-width: 64ch; margin: 0 0 16px;
  }
  .section-card p strong { color: var(--fg); font-weight: 500; }
  .section-card p em { font-style: italic; color: var(--fg); }
  .section-card ul {
    list-style: none; padding: 0; margin: 16px 0 0;
  }
  .section-card ul li {
    padding: 14px 0 14px 36px;
    border-top: 1px solid var(--border);
    position: relative;
    font-size: 16px; color: var(--fg-dim); line-height: 1.5;
  }
  .section-card ul li:last-child { border-bottom: 1px solid var(--border); }
  .section-card ul li::before {
    content: "→"; position: absolute; left: 0; top: 14px;
    color: var(--accent); font-family: "Geist Mono", monospace;
    font-size: 14px;
  }
  .section-card ul li strong { color: var(--fg); font-weight: 500; display: block; margin-bottom: 4px; }

  /* === BEFORE / AFTER === */
  .ba-strip {
    display: grid; grid-template-columns: 1fr auto 1fr;
    gap: 0;
    border: 1px solid var(--border);
    margin: 32px 0;
    overflow: hidden;
  }
  @media (max-width: 700px) { .ba-strip { grid-template-columns: 1fr; } .ba-strip .ba-arrow { display: none; } }
  .ba-col { padding: 28px; background: var(--bg-card); }
  .ba-col.after { background: color-mix(in oklch, var(--accent) 8%, var(--bg-card)); }
  .ba-col .k {
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--fg-mute); margin-bottom: 12px;
  }
  .ba-col.after .k { color: var(--accent); }
  .ba-col h5 {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 24px; margin: 0 0 12px; font-weight: 400;
    letter-spacing: -0.015em;
  }
  .ba-col p { font-size: 14.5px; color: var(--fg-dim); margin: 0; line-height: 1.55; }
  .ba-col .nums {
    margin-top: 20px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
    padding-top: 16px; border-top: 1px solid var(--border);
  }
  .ba-col .nums div span { display: block; font-family: "Geist Mono", monospace; font-size: 10.5px; color: var(--fg-mute); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 4px; }
  .ba-col .nums div b {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 28px; color: var(--fg); letter-spacing: -0.02em;
    font-weight: 400;
  }
  .ba-col.after .nums div b { color: var(--accent); }
  .ba-arrow {
    width: 50px; display: grid; place-items: center;
    background: var(--bg-elev);
    border-left: 1px solid var(--border); border-right: 1px solid var(--border);
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 36px; color: var(--accent);
  }

  /* === REVENUE BAR CHART === */
  .chart-card {
    border: 1px solid var(--border);
    padding: 28px;
    margin: 28px 0;
    background: var(--bg-card);
  }
  .chart-card .ch-head {
    display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: baseline;
    margin-bottom: 24px;
  }
  .chart-card h5 {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 24px; margin: 0; font-weight: 400; letter-spacing: -0.015em;
  }
  .chart-card .legend-mini {
    display: flex; gap: 16px;
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--fg-mute); letter-spacing: 0.04em;
  }
  .chart-card .legend-mini span { display: inline-flex; align-items: center; gap: 6px; }
  .chart-card .legend-mini .sw { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
  .chart-bars {
    display: grid; grid-template-columns: repeat(8, 1fr); gap: 18px;
    align-items: end;
    height: 220px;
  }
  .chart-col {
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    height: 100%;
  }
  .chart-col .bars-stack {
    flex: 1; width: 100%;
    display: flex; flex-direction: column; justify-content: end; gap: 3px;
    position: relative;
  }
  .chart-col .bar-old {
    background: color-mix(in oklch, var(--fg) 30%, var(--bg-card));
    border-radius: 3px 3px 0 0;
  }
  .chart-col .bar-new {
    background: var(--accent);
    border-radius: 3px 3px 0 0;
  }
  .chart-col .month {
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    color: var(--fg-mute); letter-spacing: 0.04em;
  }
  .chart-foot {
    margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border);
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px;
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--fg-mute); letter-spacing: 0.02em;
  }
  .chart-foot b { color: var(--fg); font-weight: 500; font-family: "Geist"; font-size: 14px; letter-spacing: -0.005em; }

  /* === TIMELINE === */
  .timeline {
    margin: 28px 0;
    border: 1px solid var(--border); background: var(--bg-card);
    padding: 28px;
  }
  .timeline h5 {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 24px; margin: 0 0 6px; font-weight: 400; letter-spacing: -0.015em;
  }
  .timeline .sub {
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--fg-mute); letter-spacing: 0.04em; text-transform: uppercase;
    margin-bottom: 22px;
  }
  .tl-grid {
    display: grid;
    grid-template-columns: 80px 1fr;
    row-gap: 0;
  }
  .tl-week {
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--fg-mute); letter-spacing: 0.04em;
    padding: 16px 0 16px 0;
    border-top: 1px solid var(--border);
  }
  .tl-row {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center;
  }
  .tl-row strong { color: var(--fg); font-weight: 500; font-size: 15px; }
  .tl-row .who {
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    color: var(--fg-mute); letter-spacing: 0.06em; text-transform: uppercase;
  }
  .tl-row .sub-l {
    color: var(--fg-mute); font-size: 13px; margin-top: 3px; display: block;
  }

  /* === QUOTE BLOCK === */
  .quote-block {
    margin: 48px 0;
    padding: 56px;
    border: 1px solid var(--border-strong);
    background:
      radial-gradient(500px 200px at 90% 0%, color-mix(in oklch, var(--accent) 18%, transparent), transparent 60%),
      var(--bg-elev);
    display: grid; grid-template-columns: auto 1fr; gap: 36px; align-items: center;
    position: relative;
  }
  @media (max-width: 700px) { .quote-block { grid-template-columns: 1fr; padding: 36px; } }
  .quote-block::before {
    content: "“"; position: absolute; top: 8px; right: 32px;
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 160px; color: var(--accent); line-height: 0.7;
    opacity: 0.7;
  }
  .quote-block .portrait {
    width: 120px; height: 120px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    border: 2px solid var(--border-strong);
    flex-shrink: 0;
  }
  .quote-block blockquote {
    margin: 0;
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: clamp(22px, 2.4vw, 30px); line-height: 1.3; letter-spacing: -0.01em;
    color: var(--fg); font-weight: 400;
    position: relative; z-index: 2;
  }
  .quote-block cite {
    display: block; margin-top: 24px;
    font-family: "Geist Mono", monospace; font-style: normal;
    font-size: 12px; color: var(--fg-mute); letter-spacing: 0.04em;
    padding-top: 16px; border-top: 1px solid var(--border);
  }
  .quote-block cite strong { color: var(--fg); font-weight: 500; }

  /* === RECIPE / REPRODUCE === */
  .recipe {
    border: 1px solid var(--border-strong);
    background: var(--bg-elev);
    margin-top: 32px;
  }
  .recipe .rh {
    padding: 20px 28px;
    border-bottom: 1px solid var(--border);
    background: var(--fg); color: var(--bg);
    display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: baseline;
  }
  .recipe .rh h5 {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 28px; margin: 0; font-weight: 400; letter-spacing: -0.015em;
  }
  .recipe .rh small {
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    letter-spacing: 0.14em; text-transform: uppercase;
    color: color-mix(in oklch, var(--bg) 70%, var(--fg));
  }
  .recipe-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  }
  @media (max-width: 880px) { .recipe-grid { grid-template-columns: repeat(2, 1fr); } }
  .recipe-step {
    padding: 24px;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
  }
  .recipe-step:nth-child(4n) { border-right: 0; }
  .recipe-step .n {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 44px; line-height: 1; color: var(--accent); letter-spacing: -0.02em;
    margin-bottom: 14px;
  }
  .recipe-step h6 {
    font-size: 15px; margin: 0 0 6px; font-weight: 500; letter-spacing: -0.005em;
    color: var(--fg);
  }
  .recipe-step p {
    font-size: 13px; color: var(--fg-mute); margin: 0; line-height: 1.5;
  }
  .recipe-step a {
    display: inline-block; margin-top: 8px;
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--accent); letter-spacing: 0.04em;
  }

  /* === STICKY FACT-SHEET SIDEBAR === */
  .fact-sheet {
    position: sticky; top: 80px; align-self: start;
    border: 1px solid var(--border);
    background: var(--bg-elev);
  }
  .fact-sheet .fs-head {
    padding: 20px 24px;
    background: var(--fg); color: var(--bg);
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    letter-spacing: 0.18em; text-transform: uppercase;
    display: flex; justify-content: space-between; align-items: center;
  }
  .fact-sheet .fs-body { padding: 0 24px; }
  .fact-sheet .row {
    padding: 14px 0;
    border-top: 1px solid var(--border);
    display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: baseline;
    font-size: 13.5px;
  }
  .fact-sheet .row:first-child { border-top: 0; }
  .fact-sheet .row .l {
    font-family: "Geist Mono", monospace; font-size: 11px;
    color: var(--fg-mute); letter-spacing: 0.04em; text-transform: uppercase;
  }
  .fact-sheet .row .v { color: var(--fg); font-weight: 500; text-align: right; max-width: 22ch; }
  .fact-sheet .row .v small { display: block; font-family: "Geist Mono", monospace; font-weight: 400; color: var(--fg-mute); font-size: 10.5px; margin-top: 2px; letter-spacing: 0.04em; }
  .fs-cta {
    padding: 24px;
    border-top: 1px solid var(--border);
    background: var(--bg-card);
  }
  .fs-cta .btn { width: 100%; justify-content: center; margin-bottom: 8px; }
  .fs-cta .row {
    display: flex; gap: 6px;
    margin-top: 12px;
  }
  .fs-cta .row a {
    flex: 1; text-align: center;
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    padding: 8px; border: 1px solid var(--border); border-radius: 6px;
    color: var(--fg-dim); letter-spacing: 0.04em; text-transform: uppercase;
  }
  .fs-cta .row a:hover { color: var(--accent); border-color: var(--accent); }

  /* === NEXT CASE NAV === */
  .next-strip {
    margin-top: 72px;
    border-top: 4px double var(--fg);
    border-bottom: 1px solid var(--border);
    padding: 32px 0;
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  }
  @media (max-width: 700px) { .next-strip { grid-template-columns: 1fr; } }
  .next-strip a {
    display: block; padding: 20px 24px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: 140ms ease;
  }
  .next-strip a:hover { background: var(--bg-elev); border-color: var(--accent); }
  .next-strip .lbl {
    font-family: "Geist Mono", monospace; font-size: 10.5px;
    color: var(--fg-mute); letter-spacing: 0.14em; text-transform: uppercase;
    margin-bottom: 8px;
  }
  .next-strip .h {
    font-family: "Instrument Serif", serif; font-style: italic;
    font-size: 22px; margin: 0; font-weight: 400; letter-spacing: -0.01em;
  }
  .next-strip .nxt { text-align: right; }

body[data-kpi="mono"] .kpi .v { font-family: "Geist Mono", monospace; font-style: normal; font-size: 56px; letter-spacing: -0.02em; }
  body[data-kpi="mono"] .ba-col .nums div b,
  body[data-kpi="mono"] .kpi-strip .kpi .v { font-style: normal; }
  body[data-kpi="mono"] .chart-card h5,
  body[data-kpi="mono"] .timeline h5 { font-family: "Geist", sans-serif; font-style: normal; font-weight: 500; letter-spacing: -0.01em; }