.biesbi-reference-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1rem;
}

@media (min-width: 768px) {
  .biesbi-reference-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .biesbi-reference-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

.biesbi-reference-card {
  min-height: 300px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 2rem;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.035));
  color: #fff;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  position: relative;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.biesbi-reference-card:hover {
  transform: translateY(-4px);
  border-color: rgba(52, 211, 153, 0.45);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.11), rgba(16, 185, 129, 0.08));
}

.biesbi-reference-card.is-featured {
  grid-column: span 1;
  background:
    radial-gradient(circle at top right, rgba(16, 185, 129, 0.22), transparent 35%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
}

@media (min-width: 768px) {
  .biesbi-reference-card.is-featured {
    grid-column: span 2;
  }
}

.biesbi-reference-top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-start;
  justify-content: space-between;
}

.biesbi-reference-pill {
  border-radius: 999px;
  background: rgba(52, 211, 153, 0.12);
  color: #6ee7b7;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  padding: 0.45rem 0.7rem;
  text-transform: uppercase;
}

.biesbi-reference-status {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  padding: 0.45rem 0.7rem;
  text-transform: uppercase;
}

.biesbi-reference-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 850;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-top: 3rem;
}

.biesbi-reference-desc {
  color: rgba(255, 255, 255, 0.64);
  font-size: 1rem;
  line-height: 1.65;
  margin-top: 1rem;
  max-width: 42rem;
}

.biesbi-reference-footer {
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.86);
  display: flex;
  font-size: 0.82rem;
  font-weight: 800;
  justify-content: space-between;
  letter-spacing: 0.08em;
  margin-top: 2rem;
  padding-top: 1.25rem;
  text-transform: uppercase;
}

.biesbi-muted-note {
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 1rem;
  max-width: 38rem;
}