:root {
  --pwa-bg: #101c31;
  --pwa-border: #51647e;
  --pwa-text: #f8fafc;
  --pwa-muted: #c3cede;
  --pwa-accent: #f6c453;
  --pwa-accent-text: #07101f;
  --pwa-focus: #67e8f9;
}

.pwa-install-trigger {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 15000;
  min-height: 48px;
  max-width: min(280px, calc(100vw - 32px));
  padding: 11px 17px;
  border: 1px solid #ffe49a;
  border-radius: 999px;
  background: var(--pwa-accent);
  color: var(--pwa-accent-text);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .38);
  font: 800 .9rem/1.2 Inter, "Segoe UI", system-ui, sans-serif;
  cursor: pointer;
}

.pwa-install-trigger[hidden] { display: none !important; }
.pwa-install-trigger:hover { filter: brightness(1.05); transform: translateY(-1px); }
.pwa-install-trigger:focus-visible,
.pwa-install-dialog button:focus-visible {
  outline: 3px solid var(--pwa-focus);
  outline-offset: 3px;
}

.pwa-install-dialog {
  width: min(520px, calc(100vw - 32px));
  padding: 0;
  border: 1px solid var(--pwa-border);
  border-radius: 20px;
  background: var(--pwa-bg);
  color: var(--pwa-text);
  box-shadow: 0 28px 80px rgba(0, 0, 0, .55);
}

.pwa-install-dialog::backdrop {
  background: rgba(2, 6, 23, .78);
  backdrop-filter: blur(5px);
}

.pwa-install-dialog-body {
  position: relative;
  padding: 30px;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
}

.pwa-install-dialog h2 { margin: 0 42px 10px 0; font-size: 1.45rem; }
.pwa-install-dialog p,
.pwa-install-dialog li { color: var(--pwa-muted); line-height: 1.55; }
.pwa-install-dialog ol { margin: 18px 0 0; padding-left: 24px; }
.pwa-install-dialog li + li { margin-top: 8px; }

.pwa-install-dialog-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--pwa-border);
  border-radius: 50%;
  background: #182740;
  color: var(--pwa-text);
  font: 800 1.2rem/1 sans-serif;
  cursor: pointer;
}

@media (display-mode: standalone) {
  .pwa-install-trigger { display: none !important; }
}

@media (max-width: 520px) {
  .pwa-install-trigger {
    left: 16px;
    right: 16px;
    width: calc(100% - 32px);
    max-width: none;
  }
  .pwa-install-dialog-body { padding: 26px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .pwa-install-trigger { transition: none; }
  .pwa-install-trigger:hover { transform: none; }
}