.ptn-pwa-banner {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  z-index: 9999;
  display: none;
  align-items: center;
  gap: 12px;
  padding: 12px 12px 12px 14px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--header-bg, #0f172a) 0%, var(--primary-hover, #1e3a8a) 58%, var(--primary-color, #2563eb) 100%);
  color: var(--header-text, #fff);
  box-shadow: 0 16px 40px color-mix(in srgb, var(--text-color, #0f172a) 38%, transparent);
  border: 1px solid color-mix(in srgb, var(--header-text, #fff) 18%, transparent);
  font-family: Inter, system-ui, sans-serif;
}

.ptn-pwa-banner.is-visible {
  display: flex;
  animation: ptn-pwa-slide 0.35s ease-out;
}

.ptn-pwa-banner__icon {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  overflow: hidden;
  background: var(--primary-color, #2563eb);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--header-text, #fff) 20%, transparent);
}

.ptn-pwa-banner__icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ptn-pwa-banner__copy {
  flex: 1 1 auto;
  min-width: 0;
}

.ptn-pwa-banner__copy strong {
  display: block;
  font-size: 14px;
  line-height: 1.25;
  font-weight: 800;
}

.ptn-pwa-banner__copy span {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  line-height: 1.35;
  color: color-mix(in srgb, var(--header-text, #fff) 88%, transparent);
}

.ptn-pwa-banner__actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

.ptn-pwa-banner__install {
  border: 0;
  border-radius: 999px;
  background: var(--header-text, #fff);
  color: var(--primary-hover, #1e3a8a);
  font-weight: 800;
  font-size: 12px;
  padding: 9px 12px;
  cursor: pointer;
  white-space: nowrap;
}

.ptn-pwa-banner__close {
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--header-text, #fff) 12%, transparent);
  color: var(--header-text, #fff);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.ptn-pwa-sheet {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: flex-end;
  justify-content: center;
  background: color-mix(in srgb, var(--text-color, #0f172a) 45%, transparent);
}

.ptn-pwa-sheet.is-open {
  display: flex;
}

.ptn-pwa-sheet__card {
  width: min(420px, calc(100% - 24px));
  margin-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  background: var(--card-bg, #fff);
  color: var(--text-color, #0f172a);
  border-radius: 20px;
  padding: 20px 18px 16px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.28);
  font-family: Inter, system-ui, sans-serif;
}

.ptn-pwa-sheet__card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
}

.ptn-pwa-sheet__card ol {
  margin: 0 0 14px;
  padding-left: 18px;
  color: var(--text-muted, #334155);
  font-size: 14px;
  line-height: 1.55;
}

.ptn-pwa-sheet__card button {
  width: 100%;
  border: 0;
  border-radius: 12px;
  background: var(--primary-color, #2563eb);
  color: var(--header-text, #fff);
  font-weight: 700;
  padding: 11px;
  cursor: pointer;
}

@keyframes ptn-pwa-slide {
  from {
    transform: translateY(18px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (display-mode: standalone), (display-mode: fullscreen) {
  .ptn-pwa-banner,
  .ptn-pwa-sheet {
    display: none !important;
  }
}

@media (min-width: 860px) {
  .ptn-pwa-banner {
    left: auto;
    right: 20px;
    width: 420px;
  }
}