/* PWA install UI — native install only, no step sheets */
.pwa-install-btn {
  position: fixed;
  z-index: 90;
  right: 14px;
  bottom: calc(14px + env(safe-area-inset-bottom, 0px));
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: min(300px, calc(100vw - 28px));
  padding: 10px 14px 10px 12px;
  border: 1px solid rgba(253, 230, 138, 0.35);
  border-radius: 16px;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 55%, #14532d 140%);
  color: #fff;
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  cursor: pointer;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
  animation: pwaIn 0.45s ease;
}
.pwa-install-btn.hidden { display: none !important; }
.pwa-install-btn.is-busy {
  opacity: 0.85;
  pointer-events: none;
}
.pwa-install-btn.is-busy .pwa-install-ico {
  animation: pwaSpin 0.9s linear infinite;
}
@keyframes pwaSpin {
  to { transform: rotate(360deg); }
}
.pwa-install-ico {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #fbbf24, #ca8a04);
  color: #111827;
  font-weight: 900;
}
.pwa-install-txt {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.pwa-install-txt strong {
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.pwa-install-txt small {
  font-size: 0.72rem;
  color: #cbd5e1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@keyframes pwaIn {
  from { transform: translateY(16px); opacity: 0; }
  to { transform: none; opacity: 1; }
}

.pwa-toast {
  position: fixed;
  left: 50%;
  bottom: calc(88px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%) translateY(12px);
  z-index: 110;
  background: rgba(0, 0, 0, 0.88);
  color: #fff;
  padding: 10px 16px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  max-width: 90vw;
  text-align: center;
}
.pwa-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (min-width: 900px) {
  .pwa-install-btn {
    bottom: 20px;
    right: 20px;
  }
}

@media (display-mode: standalone), (display-mode: minimal-ui) {
  body {
    padding-top: env(safe-area-inset-top, 0px);
    padding-left: env(safe-area-inset-left, 0px);
    padding-right: env(safe-area-inset-right, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
}

body.room-page .pwa-install-btn,
body.okey-page .pwa-install-btn,
body.roulette-page .pwa-install-btn {
  bottom: auto;
  top: calc(58px + env(safe-area-inset-top, 0px));
  right: 10px;
  padding: 8px 10px;
  border-radius: 999px;
  max-width: none;
}
body.room-page .pwa-install-btn .pwa-install-txt,
body.okey-page .pwa-install-btn .pwa-install-txt,
body.roulette-page .pwa-install-btn .pwa-install-txt {
  display: none;
}
body.room-page .pwa-install-btn .pwa-install-ico,
body.okey-page .pwa-install-btn .pwa-install-ico,
body.roulette-page .pwa-install-btn .pwa-install-ico {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-basis: 40px;
}