/* Scroll of Fire — Systems Hub
   File: docs/assets/css/hub.css
   Scoped styles for hub.html (Systems grid, badges, section headings)
*/

/* ---- Layout ---- */
.hub-main {
  position: relative;
  z-index: 1;
  width: min(calc(100% - clamp(2rem, 4vw, 3rem)), var(--content-main, 1180px));
  margin-inline: auto;
  padding: clamp(1rem, 3vw, 2.25rem) 0 clamp(3rem, 5vw, 4rem);
}

.hub-lede {
  max-width: 58ch;
  color: var(--muted, #b9c1c7);
  margin: 0 0 1.25rem;
  font-size: 1.04rem;
  line-height: 1.75;
}

/* ---- Systems grid ---- */
.hub-grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.35rem);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* ---- Hub card ---- */
.hub-card {
  display: flex;
  flex-direction: column;
  min-height: 200px;
  padding: 1.1rem;
  border: 1px solid var(--line, rgba(255, 255, 255, 0.13));
  border-radius: 18px;
  background:
    radial-gradient(circle at 16% 0%, rgba(122, 243, 255, 0.07), transparent 40%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.02);
  transition: transform 200ms cubic-bezier(.22, .61, .36, 1), border-color 200ms ease, box-shadow 260ms ease;
  content-visibility: auto;
  contain-intrinsic-size: 1px 260px;
}

.hub-card:hover {
  transform: translateY(-2px);
  border-color: rgba(122, 243, 255, 0.3);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.36);
}

.hub-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  color: var(--gold, #f3c97a);
}

.hub-card-meta {
  font-size: 0.92rem;
  color: var(--muted, #b9c1c7);
  margin: 0.25rem 0 0.75rem;
  line-height: 1.55;
  flex: 1;
}

/* ---- Badge ---- */
.hub-badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.22rem 0.52rem;
  border: 1px solid var(--line, rgba(255, 255, 255, 0.13));
  border-radius: 999px;
  color: var(--muted, #b9c1c7);
  background: rgba(255, 255, 255, 0.03);
}

/* ---- Row + spacer for card bottom ---- */
.hub-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: auto;
}

.hub-spacer {
  flex: 1;
}

.hub-hint {
  font-size: 0.8rem;
  color: var(--muted, #b9c1c7);
}

/* ---- Hub section heading ---- */
.hub-section-h {
  margin: 2.2rem 0 0.85rem;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  color: var(--text, #f4f1e8);
}

.hub-section-sub {
  color: var(--muted, #b9c1c7);
  font-size: 0.95rem;
  margin: -0.55rem 0 1rem;
}

/* ---- Ember notice ---- */
.hub-notice {
  margin: 0 0 1.35rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line, rgba(255, 255, 255, 0.13));
  border-radius: 16px;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(255, 179, 106, 0.18), transparent 55%),
    radial-gradient(120% 80% at 100% 100%, rgba(122, 243, 255, 0.12), transparent 55%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  position: relative;
  overflow: hidden;
}

.hub-notice-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.hub-notice-glyph {
  font-size: 1.4rem;
  line-height: 1;
  filter: drop-shadow(0 0 6px rgba(255, 179, 106, 0.55));
  flex-shrink: 0;
}

.hub-notice-body {
  flex: 1;
  min-width: 0;
  color: var(--muted, #b9c1c7);
  font-size: 0.92rem;
  line-height: 1.55;
}

.hub-notice-body strong {
  color: var(--text, #f4f1e8);
}

.hub-notice-tag {
  display: inline-block;
  padding: 0.12rem 0.4rem;
  border: 1px solid var(--line, rgba(255, 255, 255, 0.13));
  border-radius: 999px;
  font-size: 0.75rem;
  margin-left: 0.4rem;
  vertical-align: middle;
}

.hub-notice-close {
  margin-left: auto;
  flex-shrink: 0;
  border: 1px solid var(--line, rgba(255, 255, 255, 0.13));
  background: transparent;
  color: var(--muted, #b9c1c7);
  border-radius: 10px;
  padding: 0.28rem 0.6rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  transition: background 150ms ease, color 150ms ease;
}

.hub-notice-close:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text, #f4f1e8);
}

/* ---- Hub footer ---- */
.hub-footer {
  margin-top: 2.5rem;
  padding: 1.25rem 0 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted, #b9c1c7);
  font-size: 0.88rem;
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .hub-main {
    padding: 1rem;
  }

  .hub-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .hub-grid {
    grid-template-columns: 1fr;
  }
}

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