/* FAQ, sticky buy bar, copy button — shared product pages */
.product-faq {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.product-faq .section-label { margin-bottom: 20px; }
.faq-list { display: flex; flex-direction: column; gap: 0; }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item summary {
  padding: 18px 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq-item summary:hover { color: var(--accent); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item p {
  padding: 0 0 18px;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 640px;
}

.plan {
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.2s var(--ease);
}
.plan:active { transform: scale(0.98); }
.plan.selected {
  box-shadow: 0 0 0 1px rgba(74,21,24,0.15);
}

.sticky-buy {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: rgba(9,9,9,0.92);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  transform: translateY(100%);
  transition: transform 0.35s var(--ease);
}
.sticky-buy.visible { transform: translateY(0); }
.sticky-buy .btn-primary { flex: 1; text-align: center; justify-content: center; margin: 0; }
.btn-copy {
  flex-shrink: 0;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.btn-copy:hover { border-color: rgba(255,255,255,0.2); color: var(--text); }
.btn-copy.copied { border-color: rgba(110,207,138,0.4); color: #6ecf8a; }

@media (max-width: 860px) {
  .sticky-buy { display: flex; }
  .wrap { padding-bottom: calc(80px + env(safe-area-inset-bottom)); }
}