/* ══════════════════════════════════════════════════
   STOBOX — retrospective.css
   Aligned with site patterns: sec / sec.alt / sec.dark
   Light-mode primary with dark eras for contrast
   ══════════════════════════════════════════════════ */

/* ── Shared tokens for the timeline ── */
:root{
  --retro-era-1:#2563EB;  /* Genesis — blue */
  --retro-era-2:#0D9488;  /* First Proof — teal */
  --retro-era-3:#D97706;  /* Winter — amber */
  --retro-era-4:#7C3AED;  /* Identity — purple */
  --retro-era-5:#2563EB;  /* Stobox 4 — blue */
  --retro-era-6:#059669;  /* Regulated — green */
  --retro-era-7:#D97706;  /* Institutional — amber */
}

/* ── Byline ── */
.retro-byline{
  background:var(--off);
  border-bottom:1px solid var(--border);
}
.retro-byline-inner{
  max-width:1200px;
  margin:0 auto;
  padding:22px 80px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.retro-byline-left{
  display:flex;
  align-items:center;
  gap:18px;
}
.retro-byline-label{
  font-family:'DM Mono',monospace;
  font-size:10px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--soft);
}
.retro-byline-author{
  display:flex;
  flex-direction:column;
  gap:2px;
}
.retro-byline-author strong{
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:-.005em;
}
.retro-byline-author span{
  font-size:12px;
  color:var(--mid);
}
.retro-byline-meta{
  display:flex;
  gap:36px;
  flex-wrap:wrap;
}
.rb-meta-item{
  display:flex;
  flex-direction:column;
  gap:3px;
}
.rb-meta-k{
  font-family:'DM Mono',monospace;
  font-size:9.5px;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--soft);
}
.rb-meta-v{
  font-size:13px;
  color:var(--ink);
  font-weight:500;
}
.rb-meta-v time{font-variant-numeric:tabular-nums;}
.rb-json-link{
  display:inline-flex;
  align-items:center;
  gap:5px;
  color:var(--blue);
  text-decoration:none;
  font-family:'DM Mono',monospace;
  font-size:12px;
  font-weight:500;
}
.rb-json-link:hover{text-decoration:underline;}
@media (max-width:900px){
  .retro-byline-inner{padding:20px 40px;gap:20px;}
  .retro-byline-meta{gap:20px;}
}
@media (max-width:720px){
  .retro-byline-inner{padding:18px 20px;}
  .retro-byline-meta{gap:16px;width:100%;}
  .rb-meta-v{font-size:12.5px;}
}

/* ── Metrics bar (local copy — about.css owns the canonical version) ── */
.metrics-bar{background:var(--ink2);border-bottom:1px solid rgba(255,255,255,.06);}
.metrics-inner{max-width:1200px;margin:0 auto;padding:0 80px;display:grid;grid-template-columns:repeat(5,1fr);}
.metric{padding:32px 0;border-right:1px solid rgba(255,255,255,.06);text-align:center;}
.metric:last-child{border-right:none;}
.metric-v{font-family:'Playfair Display',serif;font-size:34px;font-weight:400;color:#fff;line-height:1;margin-bottom:6px;letter-spacing:-.01em;}
.metric-v span{font-size:22px;color:var(--blue3);}
.metric-l{font-family:'DM Mono',monospace;font-size:10.5px;color:rgba(255,255,255,.42);letter-spacing:.12em;text-transform:uppercase;}
@media (max-width:1024px){
  .metrics-inner{padding:0 40px;grid-template-columns:repeat(5,1fr);}
  .metric-v{font-size:28px;}
}
@media (max-width:720px){
  .metrics-inner{padding:0 20px;grid-template-columns:repeat(2,1fr);}
  .metric{padding:22px 8px;}
  .metric:nth-child(2n){border-right:none;}
  .metric:not(:nth-last-child(-n+2)){border-bottom:1px solid rgba(255,255,255,.06);}
  .metric-v{font-size:26px;}
}

/* ── Hero override ── */
.hero--retro{
  min-height:640px;
  padding:130px 80px 100px;
}
.hero--retro .hero-glow{
  background:
    radial-gradient(ellipse 1100px 700px at 60% 40%,rgba(37,99,235,.14) 0%,transparent 65%),
    radial-gradient(ellipse 600px 600px at 10% 90%,rgba(37,99,235,.08) 0%,transparent 70%);
}

/* ── Intro layout (first .sec after metrics) ── */
.retro-intro-layout{
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:64px;
  align-items:start;
  max-width:1200px;
  margin:0 auto;
}
.retro-intro-card{
  background:var(--off);
  border:1px solid var(--border);
  border-radius:14px;
  padding:36px 32px;
  position:sticky;
  top:100px;
}
.retro-ic-label{
  font-family:'DM Mono',monospace;
  font-size:10px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--soft);
  margin-bottom:18px;
}
.retro-ic-list{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.retro-ic-list li{
  display:flex;
  gap:14px;
  font-size:14.5px;
  line-height:1.55;
  color:var(--mid);
}
.retro-ic-list li span{
  font-family:'DM Mono',monospace;
  font-size:11px;
  color:var(--blue);
  font-weight:600;
  flex-shrink:0;
  padding-top:2px;
}

/* ══ STICKY FILTER BAR ══ */
.retro-filter-wrap{
  position:sticky;
  top:60px;
  z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:16px 80px;
}
.retro-filter{
  display:flex;
  align-items:center;
  gap:24px;
  flex-wrap:wrap;
}
.retro-filter-label{
  font-family:'DM Mono',monospace;
  font-size:10px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--soft);
  flex-shrink:0;
}
.retro-filter-pills{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.rfp{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--white);
  border:1px solid var(--border);
  color:var(--mid);
  font-family:'DM Sans',sans-serif;
  font-size:13px;
  font-weight:500;
  padding:9px 16px;
  border-radius:100px;
  cursor:pointer;
  transition:.18s;
}
.rfp:hover{
  color:var(--ink);
  border-color:var(--soft);
}
.rfp.active{
  background:var(--ink);
  border-color:var(--ink);
  color:#fff;
}
.rfp-count{
  font-family:'DM Mono',monospace;
  font-size:10px;
  padding:2px 7px;
  border-radius:100px;
  background:var(--off2);
  color:var(--mid);
}
.rfp.active .rfp-count{background:rgba(255,255,255,.18);color:#fff;}

/* ══ ERA SECTIONS ══ */
.era-sec{
  position:relative;
  overflow:hidden;
}
/* Pin era background images so they don't re-cover when milestones expand.
   Without this, object-fit:cover + inset:0 re-scales the image whenever
   the section's height changes, producing a visible "zoom" on accordion open. */
.era-sec > .sec-bg-img{
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:auto;
  width:100%;
  height:900px;
  max-height:120vh;
  object-fit:cover;
  object-position:center top;
}
@media (max-width:900px){
  .era-sec > .sec-bg-img{height:700px;}
}
.era-sec.sec.dark .era-header,
.era-sec.sec.dark2 .era-header,
.era-sec.sec.dark3 .era-header{color:#fff;}

.era-layout{
  display:grid;
  grid-template-columns:1fr 1.8fr;
  gap:56px;
  align-items:start;
}
.era-sticky{position:sticky;top:140px;}

.era-header{max-width:480px;}
.era-number{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:'DM Mono',monospace;
  font-size:10px;
  font-weight:500;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--era-c,var(--blue));
  margin-bottom:16px;
}
.era-number::before{
  content:"";
  width:28px;height:1px;
  background:var(--era-c,var(--blue));
}
.sec.dark .era-number,
.sec.dark2 .era-number,
.sec.dark3 .era-number{color:var(--era-c,var(--blue3));}
.sec.dark .era-number::before,
.sec.dark2 .era-number::before,
.sec.dark3 .era-number::before{background:var(--era-c,var(--blue3));}

.era-title{
  font-family:'Playfair Display',serif;
  font-size:clamp(34px,4.2vw,56px);
  font-weight:400;
  color:var(--ink);
  line-height:1.04;
  letter-spacing:-.025em;
  margin:0 0 14px;
}
.era-sec.sec.dark .era-title,
.era-sec.sec.dark2 .era-title,
.era-sec.sec.dark3 .era-title{color:#fff;}
.era-title em{font-style:italic;color:var(--era-c,var(--blue));}
.era-sec.sec.dark .era-title em,
.era-sec.sec.dark2 .era-title em,
.era-sec.sec.dark3 .era-title em{color:rgba(255,255,255,.55);}

.era-tagline{
  font-family:'Playfair Display',serif;
  font-style:italic;
  font-size:18px;
  color:var(--blue);
  margin:0 0 22px;
  line-height:1.35;
}
.era-sec.sec.dark .era-tagline,
.era-sec.sec.dark2 .era-tagline,
.era-sec.sec.dark3 .era-tagline{color:var(--blue3);}

.era-desc{
  font-size:15.5px;
  line-height:1.7;
  color:var(--mid);
  margin:0 0 24px;
}
.era-sec.sec.dark .era-desc,
.era-sec.sec.dark2 .era-desc,
.era-sec.sec.dark3 .era-desc{color:rgba(255,255,255,.6);}

.era-stats{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.era-stat{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  background:var(--off);
  border:1px solid var(--border);
  padding:8px 14px;
  border-radius:100px;
  font-family:'DM Mono',monospace;
  font-size:11px;
  color:var(--mid);
}
.era-stat strong{color:var(--ink);font-weight:600;font-size:13px;}
.era-sec.sec.dark .era-stat,
.era-sec.sec.dark2 .era-stat,
.era-sec.sec.dark3 .era-stat{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.1);
  color:rgba(255,255,255,.55);
}
.era-sec.sec.dark .era-stat strong,
.era-sec.sec.dark2 .era-stat strong,
.era-sec.sec.dark3 .era-stat strong{color:#fff;}

/* ── Milestones column ── */
.milestones{
  display:flex;
  flex-direction:column;
  gap:14px;
  position:relative;
}
.milestones::before{
  content:"";
  position:absolute;
  left:10px;
  top:20px;
  bottom:20px;
  width:1px;
  background:var(--border);
}
.era-sec.sec.dark .milestones::before,
.era-sec.sec.dark2 .milestones::before,
.era-sec.sec.dark3 .milestones::before{background:rgba(255,255,255,.08);}

.ms{
  position:relative;
  padding-left:40px;
}
.ms::before{
  content:"";
  position:absolute;
  left:5px;
  top:26px;
  width:11px;
  height:11px;
  border-radius:50%;
  background:var(--white);
  border:2px solid var(--era-c,var(--blue));
  z-index:1;
}
.era-sec.sec.dark .ms::before,
.era-sec.sec.dark2 .ms::before,
.era-sec.sec.dark3 .ms::before{background:var(--ink);}

.ms-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:10px;
  transition:.18s;
  overflow:hidden;
}
.era-sec.sec.dark .ms-card,
.era-sec.sec.dark2 .ms-card,
.era-sec.sec.dark3 .ms-card{
  background:rgba(255,255,255,.03);
  border-color:rgba(255,255,255,.08);
}
.ms-card:hover{
  border-color:var(--era-c,var(--blue));
  box-shadow:0 6px 22px rgba(37,99,235,.07);
}
.era-sec.sec.dark .ms-card:hover,
.era-sec.sec.dark2 .ms-card:hover,
.era-sec.sec.dark3 .ms-card:hover{
  background:rgba(255,255,255,.05);
  border-color:rgba(96,165,250,.35);
  box-shadow:none;
}

.ms-head{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 22px;
  cursor:pointer;
  user-select:none;
}
.ms-date{
  font-family:'DM Mono',monospace;
  font-size:11px;
  font-weight:500;
  color:var(--soft);
  width:88px;
  flex-shrink:0;
  letter-spacing:.02em;
}
.era-sec.sec.dark .ms-date,
.era-sec.sec.dark2 .ms-date,
.era-sec.sec.dark3 .ms-date{color:rgba(255,255,255,.45);}

.ms-cat{
  font-family:'DM Mono',monospace;
  font-size:9.5px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  padding:4px 10px;
  border-radius:100px;
  flex-shrink:0;
  border:1px solid;
}
.ms-cat--company{color:#1d4ed8;border-color:#bfdbfe;background:#eff6ff;}
.ms-cat--product{color:#047857;border-color:#a7f3d0;background:#ecfdf5;}
.ms-cat--case{color:#b45309;border-color:#fde68a;background:#fffbeb;}
.ms-cat--partnership{color:#6d28d9;border-color:#ddd6fe;background:#f5f3ff;}
.ms-cat--regulatory{color:#0e7490;border-color:#a5f3fc;background:#ecfeff;}

.era-sec.sec.dark .ms-cat--company,
.era-sec.sec.dark2 .ms-cat--company,
.era-sec.sec.dark3 .ms-cat--company{color:#93c5fd;background:rgba(96,165,250,.12);border-color:rgba(96,165,250,.25);}
.era-sec.sec.dark .ms-cat--product,
.era-sec.sec.dark2 .ms-cat--product,
.era-sec.sec.dark3 .ms-cat--product{color:#6ee7b7;background:rgba(52,211,153,.12);border-color:rgba(52,211,153,.25);}
.era-sec.sec.dark .ms-cat--case,
.era-sec.sec.dark2 .ms-cat--case,
.era-sec.sec.dark3 .ms-cat--case{color:#fcd34d;background:rgba(251,191,36,.12);border-color:rgba(251,191,36,.25);}
.era-sec.sec.dark .ms-cat--partnership,
.era-sec.sec.dark2 .ms-cat--partnership,
.era-sec.sec.dark3 .ms-cat--partnership{color:#c4b5fd;background:rgba(167,139,250,.12);border-color:rgba(167,139,250,.25);}
.era-sec.sec.dark .ms-cat--regulatory,
.era-sec.sec.dark2 .ms-cat--regulatory,
.era-sec.sec.dark3 .ms-cat--regulatory{color:#67e8f9;background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.25);}

.ms-title{
  flex:1;
  font-size:15.5px;
  font-weight:500;
  color:var(--ink);
  line-height:1.35;
}
.era-sec.sec.dark .ms-title,
.era-sec.sec.dark2 .ms-title,
.era-sec.sec.dark3 .ms-title{color:#fff;}

/* Copy-link button per milestone */
.ms-copy{
  position:relative;
  flex-shrink:0;
  width:28px;
  height:28px;
  border-radius:6px;
  border:1px solid transparent;
  background:transparent;
  color:var(--soft);
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:.15s;
  opacity:0;
  padding:0;
}
.ms:hover .ms-copy,
.ms.is-open .ms-copy{opacity:.7;}
.ms-copy:hover{
  opacity:1;
  background:var(--off);
  color:var(--blue);
  border-color:var(--border);
}
.ms-copy.copied{
  background:#ecfdf5;
  color:#047857;
  border-color:#a7f3d0;
  opacity:1;
}
.era-sec.sec.dark .ms-copy:hover,
.era-sec.sec.dark2 .ms-copy:hover,
.era-sec.sec.dark3 .ms-copy:hover{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.12);
  color:var(--blue3);
}
.era-sec.sec.dark .ms-copy.copied,
.era-sec.sec.dark2 .ms-copy.copied,
.era-sec.sec.dark3 .ms-copy.copied{
  background:rgba(52,211,153,.14);
  color:#6ee7b7;
  border-color:rgba(52,211,153,.3);
}

/* Flash target when navigating via #permalink */
.ms.ms-flash .ms-card{
  animation:ms-flash-hl 1.8s ease;
}
@keyframes ms-flash-hl{
  0%{box-shadow:0 0 0 0 rgba(37,99,235,.55);}
  25%{box-shadow:0 0 0 8px rgba(37,99,235,.22);}
  100%{box-shadow:0 0 0 0 rgba(37,99,235,0);}
}

/* Offset scroll target (for sticky nav + filter bar) */
.ms{scroll-margin-top:160px;}

.ms-chev{
  flex-shrink:0;
  color:var(--soft);
  transition:transform .25s;
}
.era-sec.sec.dark .ms-chev,
.era-sec.sec.dark2 .ms-chev,
.era-sec.sec.dark3 .ms-chev{color:rgba(255,255,255,.3);}
.ms.is-open .ms-chev{transform:rotate(180deg);color:var(--era-c,var(--blue));}

.ms-detail{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.ms.is-open .ms-detail{max-height:500px;}
.ms-detail-inner{
  padding:0 22px 22px 22px;
  border-top:1px solid var(--border);
  margin-top:-1px;
}
.era-sec.sec.dark .ms-detail-inner,
.era-sec.sec.dark2 .ms-detail-inner,
.era-sec.sec.dark3 .ms-detail-inner{border-color:rgba(255,255,255,.08);}

.ms-desc{
  font-size:14.5px;
  line-height:1.7;
  color:var(--mid);
  margin:16px 0 14px;
}
.era-sec.sec.dark .ms-desc,
.era-sec.sec.dark2 .ms-desc,
.era-sec.sec.dark3 .ms-desc{color:rgba(255,255,255,.6);}

.ms-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--blue);
  text-decoration:none;
  font-family:'DM Mono',monospace;
  font-size:11px;
  font-weight:500;
  letter-spacing:.1em;
  text-transform:uppercase;
}
.era-sec.sec.dark .ms-link,
.era-sec.sec.dark2 .ms-link,
.era-sec.sec.dark3 .ms-link{color:var(--blue3);}
.ms-link:hover{text-decoration:underline;}

.ms.is-hidden{display:none;}
.era-sec.is-empty{display:none;}

/* ══ CTA SECTION ══ */
.retro-cta-layout{
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:64px;
  align-items:start;
  max-width:1200px;
  margin:0 auto;
}
.retro-cta-aside{
  display:flex;
  flex-direction:column;
  gap:16px;
}
.retro-cta-stat{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:12px;
  padding:24px 26px;
}
.rcs-v{
  font-family:'Playfair Display',serif;
  font-size:38px;
  font-weight:500;
  color:#fff;
  line-height:1;
  margin-bottom:8px;
  letter-spacing:-.02em;
}
.rcs-v span{font-size:24px;color:var(--blue3);margin-left:2px;}
.rcs-l{
  font-family:'DM Mono',monospace;
  font-size:10px;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--blue3);
  margin-bottom:8px;
}
.rcs-sub{
  font-size:13px;
  line-height:1.55;
  color:rgba(255,255,255,.55);
}

/* ══ GLOSSARY ══ */
.retro-glossary{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
  max-width:1100px;
  margin:0 auto;
}
.gloss-item{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:12px;
  padding:28px 30px;
  transition:.18s;
}
.gloss-item:hover{
  border-color:var(--blue);
  box-shadow:0 6px 24px rgba(37,99,235,.06);
}
.gloss-item h3{
  font-family:'Playfair Display',serif;
  font-size:21px;
  font-weight:500;
  color:var(--ink);
  line-height:1.2;
  margin:0 0 12px;
  letter-spacing:-.01em;
}
.gloss-item p{
  font-size:14.5px;
  line-height:1.65;
  color:var(--mid);
  margin:0;
}
@media (max-width:900px){
  .retro-glossary{grid-template-columns:1fr;gap:14px;}
  .gloss-item{padding:24px 24px;}
  .gloss-item h3{font-size:19px;}
}

/* ══ FAQ ══ */
.retro-faq{
  max-width:820px;
  margin:56px auto 0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.retro-faq-item{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:10px;
  padding:0;
  overflow:hidden;
}
.retro-faq-item summary{
  padding:22px 26px;
  cursor:pointer;
  font-size:16px;
  font-weight:500;
  color:var(--ink);
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.retro-faq-item summary::-webkit-details-marker{display:none;}
.retro-faq-item summary::after{
  content:"+";
  font-family:'DM Mono',monospace;
  font-size:22px;
  font-weight:300;
  color:var(--soft);
  transition:transform .25s;
  flex-shrink:0;
}
.retro-faq-item[open] summary::after{transform:rotate(45deg);color:var(--blue);}
.retro-faq-item p{
  padding:0 26px 24px;
  margin:0;
  font-size:14.5px;
  line-height:1.7;
  color:var(--mid);
}
.retro-faq-item[open]{border-color:var(--blue);}

/* ══ RESPONSIVE ══ */
@media (max-width:1024px){
  .retro-intro-layout,
  .era-layout,
  .retro-cta-layout{grid-template-columns:1fr;gap:40px;}
  .retro-intro-card,
  .era-sticky{position:static;}
  .retro-filter-wrap{padding:14px 40px;}
}
@media (max-width:720px){
  .retro-filter-wrap{padding:14px 20px;}
  .retro-filter{gap:14px;}
  .retro-filter-label{display:none;}
  .rfp{font-size:12.5px;padding:8px 13px;}
  .ms{padding-left:32px;}
  .milestones::before{left:6px;}
  .ms::before{left:1px;}
  .ms-head{flex-wrap:wrap;gap:10px 12px;padding:16px 18px;}
  .ms-date{width:auto;}
  .ms-title{flex-basis:100%;order:3;font-size:14.5px;}
  .ms-chev{margin-left:auto;}
  .retro-cta-stat{padding:20px 22px;}
  .rcs-v{font-size:32px;}
  .retro-faq-item summary{padding:18px 22px;font-size:15px;}
  .retro-faq-item p{padding:0 22px 20px;font-size:14px;}
}