/* DD&E Hub — Direction C
   Calmer motion: one fade-up enter language, no orbs, no pulsing chrome.
   Adds: Bayer brand lockup + plain-language explainer block with diagrams. */

.dde-hub {
  background: var(--surface-page);
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}

/* No atmospheric backdrop in light theme */

/* ---------- Header ---------- */
.dde-hub .hub-top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 40px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--surface-page);
}
.dde-hub .hub-top .brand {
  display: flex; align-items: center; gap: 16px;
}
.dde-hub .hub-top .brand .bayer-mark {
  width: 44px; height: 44px; display: block;
}
.dde-hub .hub-top .brand-text {
  display: flex; flex-direction: column; gap: 3px;
  padding-left: 16px; border-left: 1px solid var(--border-subtle);
}
.dde-hub .hub-top .brand .dde-mark {
  color: var(--text-primary); font-weight: 700; letter-spacing: 0.2em; font-size: 15px;
  font-family: "IBM Plex Mono", monospace;
}
.dde-hub .hub-top .brand .dde-full {
  font-family: "Inter", sans-serif;
  font-size: 12px; color: var(--text-muted); letter-spacing: 0.02em;
  font-weight: 400;
}
.dde-hub .hub-top .crumb {
  display: flex; align-items: center; gap: 10px;
  font-family: "IBM Plex Mono", monospace; font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.dde-hub .hub-top .crumb .seg {
  color: var(--text-muted); transition: color .2s;
  padding: 4px 2px;
}
.dde-hub .hub-top .crumb .seg:hover { color: var(--text-primary); }
.dde-hub .hub-top .crumb .seg.active { color: var(--text-primary); font-weight: 500; }
.dde-hub .hub-top .crumb .sep { color: var(--border-strong); }
.dde-hub .hub-top .hub-top-spacer { display: none; }

/* ---------- Stage / view enter ---------- */
.dde-hub .hub-stage {
  position: relative; z-index: 1;
  padding: 14px 40px 16px;
  flex: 1; display: flex; flex-direction: column;
  /* Cap content width on widescreens so the 1fr 1fr grid stays readable
     instead of producing 1500px-wide columns on a 4K monitor. */
  width: 100%; max-width: 1440px; margin: 0 auto;
  box-sizing: border-box;
}

/* Allow the two columns to actually honor their 1fr allocation. Without
   min-width: 0, grid items default to min-content width — if either column
   has a child with long unbroken text or a fixed-width SVG, the column
   pushes wider than 1fr and overflows the viewport. */
.dde-hub .home-hero > *,
.dde-hub .detail > * {
  min-width: 0;
}

/* Single shared enter primitive — calm, short.
   Use opacity transition instead of keyframes so screenshot tools that
   force prefers-reduced-motion still end up in the visible state. */
.dde-hub .fadeup {
  opacity: 0;
  transform: translateY(8px);
  animation: fadeUp .55s cubic-bezier(.2,.65,.25,1) both;
  animation-delay: var(--d, 0ms);
}
@media (prefers-reduced-motion: reduce) {
  .dde-hub .fadeup {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- HOME ---------- */
.dde-hub .home-wrap { display: flex; flex-direction: column; gap: 20px; }

.dde-hub .home-hero {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 28px; align-items: start;
}

.dde-hub .home-hero .hero-l { display: flex; flex-direction: column; }
.dde-hub .home-hero .eyebrow {
  font-family: "IBM Plex Mono", monospace; font-size: 10.5px;
  color: var(--brand-pink-text); letter-spacing: 0.16em; text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}
.dde-hub .home-hero h1 {
  font-size: 44px; line-height: 1.02; letter-spacing: -0.03em;
  font-weight: 600; margin: 0; color: var(--text-primary); text-wrap: balance;
}
.dde-hub .home-hero h1 .em {
  color: var(--brand-navy);
  font-style: italic; font-weight: 500;
}

.dde-hub .home-hero .lede {
  margin: 12px 0 0; font-size: 16px; line-height: 1.45;
  color: var(--text-primary); max-width: 540px; font-weight: 500;
  font-style: italic;
}
.dde-hub .home-hero .lede-sub {
  margin: 6px 0 0; font-size: 13.5px; line-height: 1.4;
  color: var(--text-secondary); max-width: 520px; font-weight: 400;
}

.dde-hub .home-hero .meta {
  margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--border-subtle);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px 24px;
  max-width: 540px;
}
.dde-hub .home-hero .meta .m .k {
  font-family: "IBM Plex Mono", monospace; font-size: 10px;
  color: var(--text-muted); letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 4px;
  font-weight: 500;
}
.dde-hub .home-hero .meta .v {
  font-size: 20px; font-weight: 600; line-height: 1;
  color: var(--text-primary); letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
}
.dde-hub .home-hero .meta .v.accent { color: var(--brand-primary-text); }

.dde-hub .home-hero .hero-r {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}

/* Unit list — editorial-style numbered rows */
.dde-hub .units-row {
  margin-top: 16px;
  display: flex; flex-direction: column; gap: 5px;
  max-width: 620px;
}
.dde-hub .ucard {
  position: relative;
  display: grid; grid-template-columns: 30px 1fr auto;
  gap: 16px; align-items: center;
  background: var(--surface-card);
  border: 1px solid var(--border-subtle); border-radius: var(--r-sm);
  padding: 10px 16px;
  cursor: pointer; text-align: left; color: inherit; font: inherit;
  transition: border-color .2s, transform .2s, box-shadow .2s;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.dde-hub .ucard::before {
  content: ""; position: absolute;
  left: 0; top: 8px; bottom: 8px; width: 2px;
  background: var(--brand-primary);
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transition: opacity .2s, top .2s, bottom .2s;
}
.dde-hub .ucard:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lift);
}
.dde-hub .ucard:hover::before { opacity: 1; top: 0; bottom: 0; }
.dde-hub .ucard .id {
  font-family: "IBM Plex Mono", monospace; font-size: 11px;
  color: var(--text-muted); letter-spacing: 0.06em; font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.dde-hub .ucard .ucard-body {
  display: flex; align-items: baseline; gap: 12px; min-width: 0;
  flex-wrap: wrap;
}
.dde-hub .ucard .nm {
  font-size: 15px; color: var(--text-primary); font-weight: 600; letter-spacing: -0.01em;
  line-height: 1.2;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.dde-hub .ucard .tag {
  font-size: 12px; color: var(--text-secondary);
  white-space: nowrap;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  font-family: "Inter", sans-serif;
}
.dde-hub .ucard .arr {
  color: var(--text-muted); font-size: 16px; line-height: 1;
  transition: transform .2s ease-out, color .2s;
}
.dde-hub .ucard:hover .arr { transform: translateX(4px); color: var(--brand-primary-text); }

/* ---------- DETAIL ---------- */
.dde-hub .detail {
  display: grid; grid-template-columns: 5fr 7fr; gap: 36px; padding-top: 0;
}

.dde-hub .back-btn {
  background: transparent; color: var(--text-secondary);
  border: none;
  padding: 2px 0;
  font-family: "Inter", sans-serif; font-size: 12px;
  letter-spacing: 0; text-transform: none; cursor: pointer;
  margin-bottom: 10px; display: inline-flex; align-items: center; gap: 6px;
  transition: color .2s;
  font-weight: 500;
}
.dde-hub .back-btn:hover { color: var(--brand-primary-text); }
.dde-hub .back-btn .arr { transition: transform .2s ease-out; font-size: 13px; }
.dde-hub .back-btn:hover .arr { transform: translateX(-3px); }

.dde-hub .detail h2 {
  font-size: 36px; line-height: 1.05; letter-spacing: -0.025em;
  font-weight: 600; margin: 0 0 14px; color: var(--text-primary); text-wrap: balance;
}
.dde-hub .detail h2 .accent { color: var(--brand-pink); }
.dde-hub .detail .left .tag {
  font-family: "IBM Plex Mono", monospace; font-size: 10px;
  color: var(--text-muted); letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 500;
}

/* Explainer — quieter intro block */
.dde-hub .explainer {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-card);
}
.dde-hub .explainer .exp-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 6px;
}
.dde-hub .explainer .exp-head .exp-lbl {
  font-family: "IBM Plex Mono", monospace; font-size: 9.5px;
  color: var(--brand-green-text); letter-spacing: 0.16em; text-transform: uppercase;
  padding: 0;
  background: none;
  border: none;
  font-weight: 600;
}
.dde-hub .explainer h4 {
  font-size: 16px; font-weight: 600; margin: 0 0 4px;
  color: var(--text-primary); letter-spacing: -0.01em;
  line-height: 1.25;
}
.dde-hub .explainer .exp-line {
  font-size: 13px; line-height: 1.45; color: var(--text-secondary); margin: 0 0 10px;
}
.dde-hub .explainer .exp-diagram {
  background: var(--surface-deep);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-sm);
  padding: 8px;
  margin-bottom: 8px;
  max-height: 110px;
  overflow: hidden;
}
.dde-hub .explainer .exp-diagram .dg {
  width: 100%; height: auto; display: block;
  max-height: 95px;
}
.dde-hub .explainer .exp-analogy {
  margin: 0;
  font-size: 12px; line-height: 1.45; color: var(--text-secondary);
  font-style: italic;
}

/* Diagram primitives — tiny one-shot reveals on the SVG parts */
.dg-spoke, .dg-gate, .dg-row, .dg-fade-in {
  opacity: 0;
  animation: dgIn .5s cubic-bezier(.2,.65,.25,1) both;
  animation-delay: calc(220ms + var(--di, 0) * 90ms);
}
.dg-bar {
  transform: scaleY(0);
  animation: dgBar .55s cubic-bezier(.2,.65,.25,1) both;
  animation-delay: calc(280ms + var(--di, 0) * 80ms);
}
.dg-pulse {
  animation: dgPulse 2s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
  .dg-spoke, .dg-gate, .dg-row, .dg-fade-in { opacity: 1 !important; animation: none !important; }
  .dg-bar { transform: none !important; animation: none !important; }
  .dg-pulse { animation: none !important; }
}
@keyframes dgIn { to { opacity: 1; } }
@keyframes dgBar { to { transform: scaleY(1); } }
@keyframes dgPulse {
  0%, 100% { r: 2; opacity: 1; }
  50%      { r: 4; opacity: 0.6; }
}

/* Promise card */
.dde-hub .promise-card {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle); border-radius: var(--r-sm);
  padding: 12px 16px 12px 18px; margin-bottom: 12px;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-card);
}
.dde-hub .promise-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--brand-primary);
}
.dde-hub .promise-card .lbl {
  font-family: "IBM Plex Mono", monospace; font-size: 9.5px;
  color: var(--text-muted); letter-spacing: 0.14em; text-transform: uppercase;
  margin-bottom: 4px;
  font-weight: 500;
}
.dde-hub .promise-card p {
  margin: 0; font-size: 14px; line-height: 1.5; color: var(--text-primary);
  font-weight: 400;
}

.dde-hub .lead-block {
  background: var(--surface-card); border: 1px solid var(--border-subtle); border-radius: var(--r-sm);
  padding: 10px 14px; display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow-card);
}
.dde-hub .lead-block .av {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--surface-card-hi); border: 1px solid var(--border-strong);
  display: grid; place-items: center;
  font-family: "IBM Plex Mono", monospace; font-size: 12px;
  color: var(--brand-primary-text); font-weight: 700;
}
.dde-hub .lead-block .nm { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.dde-hub .lead-block .rl {
  font-family: "IBM Plex Mono", monospace; font-size: 9px;
  color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 2px;
  font-weight: 500;
}

/* Right column */
.dde-hub .detail .right .sec-h {
  font-family: "IBM Plex Mono", monospace; font-size: 10px;
  color: var(--text-muted); letter-spacing: 0.14em; text-transform: uppercase;
  margin: 0 0 8px; display: flex; align-items: center; gap: 12px;
  font-weight: 500;
}
.dde-hub .detail .right .sec-h::after {
  content: ""; flex: 1; height: 1px; background: var(--border-subtle);
}
.dde-hub .detail .right .sec-h:not(:first-child) { margin-top: 16px; }

.dde-hub .detail .right .squad-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.dde-hub .detail .right .squad {
  background: var(--surface-card); border: 1px solid var(--border-subtle); border-radius: var(--r-sm);
  padding: 8px 12px;
  display: grid; grid-template-columns: 22px 1fr; gap: 8px;
  align-items: start;
  transition: border-color .2s, background .2s, transform .2s;
  box-shadow: var(--shadow-card);
}
.dde-hub .detail .right .squad:hover {
  border-color: var(--border-strong); background: var(--surface-card-alt);
}
.dde-hub .detail .right .squad .sq-n {
  font-family: "IBM Plex Mono", monospace; font-size: 10px;
  color: var(--text-muted); letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  padding-top: 1px;
}
.dde-hub .detail .right .squad .sq-body {
  min-width: 0;
}
.dde-hub .detail .right .squad .sq-nm {
  font-size: 12.5px; color: var(--text-primary); font-weight: 600;
  letter-spacing: -0.005em;
  line-height: 1.25;
}
.dde-hub .detail .right .squad .sq-strat {
  font-size: 11px; color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 3px;
  font-weight: 400;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.dde-hub .detail .right .cap-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: 18px; }
.dde-hub .detail .right .cap-row {
  display: grid; grid-template-columns: 22px 1fr; gap: 8px;
  padding: 7px 0; border-top: 1px solid var(--border-subtle);
  font-size: 12.5px; color: var(--text-primary); line-height: 1.4;
}
.dde-hub .detail .right .cap-row:last-child,
.dde-hub .detail .right .cap-row:nth-last-child(2) { border-bottom: 1px solid var(--border-subtle); }
.dde-hub .detail .right .cap-row .i {
  font-family: "IBM Plex Mono", monospace; font-size: 10px;
  color: var(--text-muted); letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  padding-top: 1px;
}

.dde-hub .detail .right .tools-row { display: flex; flex-wrap: wrap; gap: 5px; }
.dde-hub .detail .right .pill {
  font-family: "IBM Plex Mono", monospace; font-size: 10px;
  padding: 4px 9px;
  background: var(--surface-card-alt); border: 1px solid var(--border-subtle);
  color: var(--text-secondary); border-radius: 999px; letter-spacing: 0.02em;
  transition: color .2s, border-color .2s, background .2s;
}
.dde-hub .detail .right .pill:hover {
  color: var(--brand-primary-text); border-color: var(--border-strong); background: var(--surface-card);
}

@media (prefers-reduced-motion: reduce) {
  .dde-hub .ucard, .dde-hub .back-btn, .dde-hub .squad, .dde-hub .pill,
  .dde-hub .ucard .head-row .arr, .dde-hub .back-btn .arr {
    transition: none !important;
  }
}