:root {
  --card-signature-directory-width: 150px;
  --card-signature-directory-height: 113px;
  --card-signature-directory-gap: 18px;
  --card-signature-feature-width: min(42%, 320px);
}

.card-signature {
  position: absolute;
  right: 16px;
  bottom: 16px;
  z-index: 0;
  width: var(--card-signature-directory-width);
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--card-accent) 32%, transparent);
  border-radius: 7px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--card-accent) 7%, transparent), transparent 62%), rgba(10, 10, 15, .34);
  color: color-mix(in srgb, var(--card-accent) 82%, var(--text-faint));
  opacity: .66;
  pointer-events: none;
  transform-origin: bottom right;
  transition: opacity .18s ease, transform .18s ease, border-color .18s ease;
}
.card-signature::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 0 76%, rgba(10, 10, 15, .7) 100%); }
.card-signature__diagram { display: block; width: 100%; height: 100%; overflow: visible; }
.card-signature__motif { position: absolute; right: 8px; bottom: 7px; z-index: 1; color: currentColor; font: 500 9px/1 var(--mono); letter-spacing: .13em; text-transform: uppercase; }
.system-card .card-top { min-width: 0; align-items: flex-start; }
.system-card .type-label { min-width: 0; text-wrap: balance; }
.system-card .badge { flex: none; }
.badge { gap: 6px; justify-content: center; line-height: 1; white-space: nowrap; }
.badge::before { box-sizing: border-box; display: block; align-self: center; transform-origin: center; }
.badge.preview::before { transform: rotate(45deg) scale(.72); }
.system-card h3 { overflow-wrap: anywhere; text-wrap: balance; }
.system-card p { margin-bottom: 0; overflow-wrap: anywhere; text-wrap: pretty; }
.system-card .data-mode { overflow-wrap: anywhere; }
.system-card .card-route { white-space: nowrap; }
.system-card[data-card-signature-ready]::before { content: ""; width: 0; height: 0; padding: 0; border: 0; background: none; opacity: 0; }
.system-card > .card-signature { z-index: 0; }
.system-card:hover .card-signature, .system-card:focus-visible .card-signature { opacity: .94; transform: translateY(-2px) scale(1.025); border-color: color-mix(in srgb, var(--card-accent) 52%, transparent); }
.system-card.specimen-card .card-signature { right: 22px; bottom: 22px; width: var(--card-signature-feature-width); min-width: 190px; max-width: 320px; opacity: .72; }
.system-card.specimen-card:not([data-card-signature-ready]) > h3,
.system-card.specimen-card:not([data-card-signature-ready]) > p,
.system-card.specimen-card:not([data-card-signature-ready]) > .data-mode,
.system-card.specimen-card:not([data-card-signature-ready]) > .card-route {
  max-width: 50%;
}

/*
 * Directory cards retain the bottom-right signature treatment, but their
 * content box now ends before the visual begins. This keeps descriptions,
 * data modes, and CTAs aligned without turning the artwork into a watermark.
 */
.system-card.directory-card {
  padding-bottom: calc(16px + var(--card-signature-directory-height) + var(--card-signature-directory-gap));
}
.system-card.directory-card .card-route { max-width: none; }
.system-card.directory-card--wide {
  --card-signature-directory-height: 143px;
}
.system-card.directory-card--wide .card-signature { width: 190px; }

/*
 * Featured cards give the signature its own final row. Text length can never
 * expand an internal side rail or push the artwork outside the clipped card.
 */
.system-card.specimen-card[data-card-signature-ready] {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto auto auto auto auto;
}
.system-card.specimen-card[data-card-signature-ready] > .card-top {
  grid-column: 1 / -1;
  grid-row: 1;
}
.system-card.specimen-card[data-card-signature-ready] > h3 {
  grid-column: 1 / -1;
  grid-row: 2;
  max-width: none;
}
.system-card.specimen-card[data-card-signature-ready] > p {
  grid-column: 1 / -1;
  grid-row: 3;
  max-width: none;
}
.system-card.specimen-card[data-card-signature-ready] > .data-mode {
  grid-column: 1;
  grid-row: 4;
  max-width: none;
}
.system-card.specimen-card[data-card-signature-ready] > .card-route {
  grid-column: 1;
  grid-row: 5;
  max-width: none;
}
.system-card.specimen-card[data-card-signature-ready] > .card-signature {
  position: relative;
  right: auto;
  bottom: auto;
  grid-column: 1;
  grid-row: 6;
  align-self: end;
  justify-self: end;
  width: clamp(160px, 52%, 280px);
  min-width: 0;
  margin-top: var(--card-signature-directory-gap);
}

@media (max-width: 620px) {
  :root {
    --card-signature-directory-width: 118px;
    --card-signature-directory-height: 89px;
  }
  .system-card.directory-card {
    padding-bottom: 132px;
  }
  .system-card.specimen-card:not([data-card-signature-ready]) {
    padding-bottom: 132px;
  }
  .system-card.specimen-card:not([data-card-signature-ready]) > h3,
  .system-card.specimen-card:not([data-card-signature-ready]) > p,
  .system-card.specimen-card:not([data-card-signature-ready]) > .data-mode,
  .system-card.specimen-card:not([data-card-signature-ready]) > .card-route {
    max-width: 100%;
  }
  .card-signature,
  .system-card.specimen-card .card-signature,
  .system-card.directory-card--wide .card-signature {
    right: 12px;
    bottom: 12px;
    width: 118px;
    min-width: 0;
    opacity: .44;
  }
  .system-card.specimen-card[data-card-signature-ready] {
    grid-template-columns: minmax(0, 1fr);
  }
  .system-card.specimen-card[data-card-signature-ready] > .card-top,
  .system-card.specimen-card[data-card-signature-ready] > h3,
  .system-card.specimen-card[data-card-signature-ready] > p,
  .system-card.specimen-card[data-card-signature-ready] > .data-mode,
  .system-card.specimen-card[data-card-signature-ready] > .card-route,
  .system-card.specimen-card[data-card-signature-ready] > .card-signature {
    grid-column: 1;
  }
  .system-card.specimen-card[data-card-signature-ready] > .card-signature {
    grid-row: 6;
  }
  .card-signature__motif { right: 7px; bottom: 6px; font-size: 8px; }
}
@media (prefers-reduced-motion: reduce) { .card-signature { transition: none; } .system-card:hover .card-signature, .system-card:focus-visible .card-signature { transform: none; } }