/* =========================================================
   HOMEPAGE — hero, filter bar, dynamic grid
   ========================================================= */

.aa-hero {
  padding: var(--aa-space-16) 0 var(--aa-space-12);
  border-bottom: 1px solid var(--aa-border);
  background:
    radial-gradient(ellipse 800px 400px at 15% 0%, var(--aa-teal-glow), transparent 60%),
    var(--aa-bg-base);
  position: relative;
  overflow: hidden;
}

/* faint schematic grid backdrop — HMI blueprint feel */
.aa-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--aa-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--aa-border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.18;
  pointer-events: none;
}

.aa-hero__inner { position: relative; z-index: 1; max-width: 720px; }

.aa-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--aa-space-2);
  margin-bottom: var(--aa-space-4);
}

.aa-hero h1 { margin-bottom: var(--aa-space-4); }
.aa-hero h1 .aa-accent { color: var(--aa-teal); }

.aa-hero__lede {
  font-size: 1.1rem;
  color: var(--aa-text-secondary);
  max-width: 560px;
}

.aa-hero__actions {
  display: flex;
  gap: var(--aa-space-3);
  margin-top: var(--aa-space-6);
  flex-wrap: wrap;
}

/* ---- Category Filter Bar (homepage-specific control) ---- */
.aa-filterbar {
  display: flex;
  align-items: center;
  gap: var(--aa-space-2);
  flex-wrap: wrap;
  padding: var(--aa-space-4) 0;
  margin-bottom: var(--aa-space-6);
  border-bottom: 1px solid var(--aa-border);
}

.aa-filterbar__label {
  font-family: var(--aa-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--aa-text-muted);
  margin-right: var(--aa-space-2);
}

.aa-filter-btn {
  font-family: var(--aa-font-mono);
  font-size: 0.78rem;
  background: transparent;
  border: 1px solid var(--aa-border-strong);
  color: var(--aa-text-secondary);
  padding: var(--aa-space-2) var(--aa-space-4);
  border-radius: var(--aa-radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--aa-space-2);
}
.aa-filter-btn::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}
.aa-filter-btn:hover {
  border-color: var(--aa-teal-dim);
  color: var(--aa-teal);
}
.aa-filter-btn.is-active {
  background: var(--aa-teal-glow);
  border-color: var(--aa-teal);
  color: var(--aa-teal);
}
.aa-filter-btn.is-active::before { opacity: 1; }