.bis-premium-surface {
  position: relative;
  overflow: hidden;
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.86));
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
}

.bis-premium-surface::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2), rgba(99, 102, 241, 0));
  pointer-events: none;
}

.bis-chart-card {
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(248, 250, 252, 0.82));
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.08);
}

.bis-chart-wrap {
  position: relative;
  min-height: 280px;
}

.bis-kpi-chip {
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #334155;
  background: rgba(148, 163, 184, 0.15);
}

.bis-activity-stream {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 250, 252, 0.85));
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
}

.bis-activity-item {
  position: relative;
  padding: 1rem 1rem 1rem 1.8rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.bis-activity-item:last-child {
  border-bottom: 0;
}

.bis-activity-item::before {
  content: "";
  position: absolute;
  left: 0.85rem;
  top: 1.45rem;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #6366f1;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.14);
}

.bis-fade-rise {
  animation: bisFadeRise 0.75s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.bis-page-hero {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: linear-gradient(130deg, rgba(79, 70, 229, 0.1), rgba(14, 165, 233, 0.08));
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.1);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1rem;
}

.bis-page-hero h2,
.bis-page-hero h4 {
  margin-bottom: 0.3rem;
}

.bis-page-hero p {
  margin-bottom: 0;
  color: #475569;
}

.bis-panel {
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 1rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.btn {
  transition: transform 0.18s ease, box-shadow 0.22s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.bis-form-progress {
  position: sticky;
  top: 78px;
  z-index: 20;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.08);
  padding: 0.8rem 0.95rem;
  margin-bottom: 1rem;
}

.bis-form-progress .progress {
  height: 0.55rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.2);
}

.bis-section-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-left: 0.6rem;
  padding: 0.12rem 0.52rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #334155;
  background: rgba(148, 163, 184, 0.18);
}

.bis-section-chip.is-complete {
  color: #065f46;
  background: rgba(16, 185, 129, 0.2);
}

.bis-section-nav {
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.06);
  padding: 0.7rem;
  margin-bottom: 1rem;
}

.bis-section-link {
  border: 1px solid rgba(148, 163, 184, 0.34);
  background: #fff;
  color: #334155;
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
}

.bis-section-link.is-pending {
  border-color: rgba(245, 158, 11, 0.6);
  background: rgba(245, 158, 11, 0.1);
  color: #92400e;
}

.bis-section-link.is-complete {
  border-color: rgba(16, 185, 129, 0.6);
  background: rgba(16, 185, 129, 0.12);
  color: #065f46;
}

.bis-next-incomplete {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1050;
  border-radius: 999px;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.22);
}

.bis-complete-toast {
  position: fixed;
  right: 18px;
  bottom: 72px;
  z-index: 1055;
  border-radius: 0.8rem;
  padding: 0.7rem 0.9rem;
  color: #065f46;
  background: rgba(16, 185, 129, 0.16);
  border: 1px solid rgba(16, 185, 129, 0.4);
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.14);
  font-size: 0.86rem;
  font-weight: 600;
}

@keyframes bisFadeRise {
  from {
    transform: translateY(14px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}