/* Phase 1 — device face / fingerprint gate before using a stored portal session */
.zc-bio-overlay {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(10, 14, 24, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.zc-bio-card {
  width: 100%;
  max-width: 360px;
  background: #1a1f2e;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 28px 22px 22px;
  text-align: center;
  color: #f1f5f9;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}
.zc-bio-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(145deg, #24a0ed, #1d7fc2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  line-height: 1;
}
.zc-bio-title { font-size: 20px; font-weight: 800; margin: 0 0 8px; }
.zc-bio-sub { font-size: 13px; color: #94a3b8; margin: 0 0 20px; line-height: 1.45; }
.zc-bio-btn {
  display: block; width: 100%; border: none; border-radius: 10px;
  padding: 14px 16px; font-size: 15px; font-weight: 700; cursor: pointer; margin-bottom: 10px;
}
.zc-bio-btn-primary { background: #24a0ed; color: #0b1220; }
.zc-bio-btn-primary:disabled { opacity: 0.55; cursor: wait; }
.zc-bio-btn-ghost { background: transparent; color: #94a3b8; font-weight: 600; font-size: 13px; margin-bottom: 0; }
.zc-bio-err { font-size: 12px; color: #fca5a5; margin: 0 0 12px; min-height: 16px; }
.zc-bio-enroll-banner {
  margin-top: 14px; padding: 12px 14px; border-radius: 10px;
  background: rgba(36, 160, 237, 0.12); border: 1px solid rgba(36, 160, 237, 0.35);
  text-align: left; font-size: 13px; color: #e2e8f0;
}
.zc-bio-enroll-banner p { margin: 0 0 10px; line-height: 1.4; }
.zc-bio-enroll-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.zc-bio-enroll-actions button {
  flex: 1; min-width: 120px; border: none; border-radius: 8px;
  padding: 10px 12px; font-size: 13px; font-weight: 700; cursor: pointer;
}
.zc-bio-enroll-yes { background: #24a0ed; color: #0b1220; }
.zc-bio-enroll-no { background: rgba(255,255,255,0.08); color: #cbd5e1; }