/* Canonical cross-cutting hub directory — progressive disclosure without homepage overload. */

.hubs-hero {
  overflow: hidden;
  border: 1px solid rgba(46, 76, 105, .15);
  border-radius: 34px;
  background:
    radial-gradient(circle at 84% 14%, rgba(64, 117, 181, .15), transparent 23rem),
    radial-gradient(circle at 15% 88%, rgba(64, 139, 105, .12), transparent 24rem),
    linear-gradient(135deg, #fff 0%, #f4f8ff 50%, #f7fbf5 100%);
  box-shadow: 0 24px 60px rgba(27, 48, 78, .11);
}

.hub-directory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

.hub-directory-card {
  display: grid;
  gap: .55rem;
  min-height: 12rem;
  padding: 1.1rem;
  border: 1px solid rgba(44, 73, 104, .16);
  border-radius: 22px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  box-shadow: 0 13px 30px rgba(24, 43, 77, .08);
  transition: translate 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.hub-directory-card:hover,
.hub-directory-card:focus-visible {
  translate: 0 -2px;
  border-color: rgba(27, 95, 161, .5);
  box-shadow: 0 20px 42px rgba(24, 43, 77, .14);
}

.hub-directory-card h3,
.hub-directory-card p {
  margin: 0;
}

.hub-directory-card p {
  color: #526377;
}

.hub-directory-card small {
  align-self: end;
  color: #315d82;
  font-weight: 800;
}

.hub-list {
  display: grid;
  gap: 1rem;
}

.canonical-hub {
  scroll-margin-top: 1rem;
  overflow: clip;
  border: 1px solid rgba(44, 73, 104, .16);
  border-radius: 25px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(24, 43, 77, .07);
}

.canonical-hub[open] {
  border-color: rgba(42, 94, 143, .34);
  box-shadow: 0 18px 40px rgba(24, 43, 77, .11);
}

.canonical-hub summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .75rem;
  align-items: center;
  padding: 1.15rem 1.25rem;
  cursor: pointer;
  list-style: none;
}

.canonical-hub summary::-webkit-details-marker {
  display: none;
}

.canonical-hub summary::after {
  content: "+";
  display: grid;
  width: 2.15rem;
  height: 2.15rem;
  place-items: center;
  border-radius: 50%;
  background: #eef4fa;
  color: #244867;
  font-size: 1.3rem;
  font-weight: 900;
}

.canonical-hub[open] summary::after {
  content: "−";
}

.hub-summary-copy {
  display: grid;
  gap: .35rem;
}

.hub-summary-copy h2,
.hub-summary-copy p {
  margin: 0;
}

.hub-summary-copy p {
  max-width: 76ch;
  color: #526377;
}

.hub-body {
  padding: 0 1.25rem 1.35rem;
  border-top: 1px solid rgba(44, 73, 104, .11);
}

.hub-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: .8rem;
  margin: 1rem 0;
}

.hub-meta-grid > div {
  padding: .9rem;
  border-radius: 17px;
  background: #f6f8fb;
}

.hub-meta-grid strong,
.hub-meta-grid span {
  display: block;
}

.hub-meta-grid span {
  margin-top: .28rem;
  color: #526377;
}

.hub-topic-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: .7rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}

.hub-topic-list li {
  position: relative;
  min-height: 4.6rem;
  padding: .82rem .86rem .82rem 2.25rem;
  border: 1px solid rgba(44, 73, 104, .13);
  border-radius: 17px;
  background: #fff;
}

.hub-topic-list li::before {
  content: "•";
  position: absolute;
  left: .9rem;
  top: .78rem;
  color: #2c765f;
  font-size: 1.35rem;
  font-weight: 900;
}

.hub-boundary {
  padding: .9rem 1rem;
  border-left: 5px solid #bd7c28;
  border-radius: 15px;
  background: #fff8e9;
}

.hub-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: .65rem 0 0;
  padding: 0;
  list-style: none;
}

.hub-tag-list li {
  padding: .32rem .58rem;
  border-radius: 999px;
  background: #eaf2fb;
  color: #244867;
  font-size: .82rem;
  font-weight: 800;
}

.hub-directory-card:focus-visible,
.canonical-hub summary:focus-visible,
.hub-body a:focus-visible {
  outline: 3px solid #0a64c6;
  outline-offset: 4px;
}

@media (max-width: 700px) {
  .hubs-hero {
    border-radius: 24px;
  }

  .hub-directory-grid,
  .hub-topic-list {
    grid-template-columns: 1fr;
  }

  .hub-directory-card {
    min-height: 0;
  }

  .canonical-hub summary,
  .hub-body {
    padding-inline: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hub-directory-card {
    transition: none;
  }
}

@media (forced-colors: active) {
  .hubs-hero,
  .hub-directory-card,
  .canonical-hub,
  .hub-topic-list li {
    border: 2px solid CanvasText;
    box-shadow: none;
  }
}

@media print {
  .hub-directory-grid {
    display: none;
  }

  .canonical-hub {
    break-inside: avoid;
    box-shadow: none;
  }

  .canonical-hub:not([open]) > .hub-body {
    display: block;
  }
}