.pwa-install-button {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 1200;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid rgba(255, 214, 10, .55);
  border-radius: 999px;
  background: #ffd60a;
  box-shadow: 0 12px 38px rgba(255, 214, 10, .24);
  color: #111217;
  cursor: pointer;
  font: 800 14px/1 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pwa-install-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 15px 42px rgba(255, 214, 10, .32);
}

.pwa-install-button:focus-visible,
.pwa-toast button:focus-visible,
.pwa-dialog button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

.pwa-toast {
  position: fixed;
  left: 50%;
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 1300;
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(560px, calc(100% - 32px));
  padding: 14px 16px;
  border: 1px solid #343641;
  border-radius: 16px;
  background: #171920;
  box-shadow: 0 18px 60px rgba(0, 0, 0, .45);
  color: #f7f7f8;
  font: 600 14px/1.4 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pwa-toast span {
  flex: 1;
}

.pwa-toast button {
  min-height: 36px;
  padding: 0 13px;
  border: 0;
  border-radius: 10px;
  background: #ffd60a;
  color: #111217;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.pwa-dialog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1400;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(0, 0, 0, .72);
  backdrop-filter: blur(8px);
}

.pwa-dialog {
  width: min(460px, 100%);
  padding: 26px;
  border: 1px solid #343641;
  border-radius: 22px;
  background: #171920;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .55);
  color: #f7f7f8;
  font: 500 16px/1.55 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pwa-dialog h2 {
  margin: 0 0 10px;
  color: #ffd60a;
  font-size: 24px;
}

.pwa-dialog p {
  margin: 0 0 18px;
  color: #c4c7d0;
}

.pwa-dialog button {
  min-height: 44px;
  padding: 0 17px;
  border: 0;
  border-radius: 12px;
  background: #ffd60a;
  color: #111217;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

@media (max-width: 640px) {
  .pwa-install-button {
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    min-height: 43px;
    padding: 0 15px;
  }

  .pwa-toast {
    bottom: max(12px, env(safe-area-inset-bottom));
  }
}

@media (prefers-reduced-motion: no-preference) {
  .pwa-install-button {
    transition: transform .18s ease, box-shadow .18s ease;
  }
}