.vr-ip {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 10001;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 4px;
  background: var(--vr-brand-deep);
  color: var(--vr-btn-fg);
  box-shadow: var(--shadow-popup);
  font-family: var(--vr-font-sans);
  transform: translateY(140%);
  opacity: 0;
  transition: transform 260ms ease, opacity 220ms ease;
}
.vr-ip.vr-ip-show {
  transform: translateY(0);
  opacity: 1;
}
.vr-ip-mark {
  width: 40px;
  height: 40px;
  border-radius: 4px;
  flex-shrink: 0;
  display: block;
}
.vr-ip-text {
  flex: 1;
  min-width: 0;
}
.vr-ip-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.25;
}
.vr-ip-sub {
  margin-top: 2px;
  font-size: 12px;
  opacity: 0.78;
  line-height: 1.4;
}
.vr-ip-sub strong {
  font-weight: 600;
  color: var(--vr-btn-fg);
  opacity: 1;
}
.vr-ip-btn {
  flex-shrink: 0;
  background: var(--vr-btn-bg);
  color: var(--vr-btn-fg);
  border: none;
  padding: 12px 20px;
  border-radius: 0;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: -0.15px;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--vr-dur) var(--vr-ease);
}
.vr-ip-btn:hover { background: var(--vr-btn-bg-h); }
.vr-ip-btn:active { background: var(--vr-btn-bg-a); }
.vr-ip-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--vr-btn-fg);
  border: none;
  border-radius: 0;
  opacity: 0.55;
  cursor: pointer;
  padding: 0;
}
.vr-ip-close:hover { opacity: 1; }

/* Desktop: never show — install criteria are different and the bar would crowd the layout. */
@media (min-width: 768px) {
  .vr-ip { display: none; }
}

/* Respect users who reduce motion. */
@media (prefers-reduced-motion: reduce) {
  .vr-ip { transition: opacity 220ms ease; transform: none; }
}

/* iOS install instructions modal — opened when the user taps the Install
   button on iOS Safari (where no programmatic install API exists). */
.vr-ip-modal {
  position: fixed;
  inset: 0;
  z-index: 10002;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  transition: opacity 200ms ease;
  pointer-events: none;
}
.vr-ip-modal.vr-ip-modal-show { opacity: 1; pointer-events: auto; }
.vr-ip-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 30, 0.55);
}
.vr-ip-modal-card {
  position: relative;
  width: calc(100% - 24px);
  max-width: 420px;
  margin: 0 12px 12px;
  padding: 24px 22px 20px;
  background: var(--vr-brand-deep);
  color: var(--vr-btn-fg);
  border-radius: 8px;
  box-shadow: var(--shadow-popup);
  transform: translateY(20px);
  transition: transform 220ms ease;
  font-family: var(--vr-font-sans);
}
.vr-ip-modal.vr-ip-modal-show .vr-ip-modal-card { transform: translateY(0); }
.vr-ip-modal-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--vr-btn-fg);
  border: none;
  border-radius: 0;
  opacity: 0.6;
  cursor: pointer;
  padding: 0;
}
.vr-ip-modal-close:hover { opacity: 1; }
.vr-ip-modal-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 16px;
  padding-right: 28px;
}
.vr-ip-steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.vr-ip-steps li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  line-height: 1.45;
}
.vr-ip-step-n {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  font-size: 12px;
  font-weight: 600;
}
.vr-ip-step-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--vr-btn-fg);
  opacity: 0.85;
}
.vr-ip-step-txt { flex: 1; }
.vr-ip-step-txt strong { font-weight: 600; }
.vr-ip-modal-ok {
  width: 100%;
  padding: 12px 16px;
  background: var(--vr-btn-bg);
  color: var(--vr-btn-fg);
  border: none;
  border-radius: 0;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--vr-dur) var(--vr-ease);
}
.vr-ip-modal-ok:hover { background: var(--vr-btn-bg-h); }
.vr-ip-modal-ok:active { background: var(--vr-btn-bg-a); }