.pwa-install-dialog {
    box-sizing: border-box;
    width: min(420px, calc(100vw - 24px));
    max-height: calc(100dvh - 24px);
    padding: 20px;
    overflow: auto;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    color: #1f2937;
    background: white;
    font: 14px/1.5 "Segoe UI", sans-serif;
}
.pwa-install-dialog::backdrop { background: #0f172a66; }
.pwa-install-dialog h2 { margin: 0 0 12px; font-size: 18px; }
.pwa-install-dialog p { margin: 0 0 12px; }
.pwa-install-dialog form { margin: 16px 0 0; text-align: right; }
.pwa-install-dialog button,
.pwa-offline button {
    min-height: 36px;
    padding: 6px 12px;
    border: 1px solid #1d4ed8;
    border-radius: 6px;
    color: white;
    background: #1d4ed8;
    font: inherit;
    cursor: pointer;
}
.pwa-offline {
    display: grid;
    min-height: 100dvh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
    place-items: center;
    background: #f8fafc;
    color: #1f2937;
    font: 16px/1.5 "Segoe UI", sans-serif;
}
.pwa-offline main { max-width: 420px; }
.pwa-offline img { width: 64px; height: 64px; }
.pwa-offline h1 { font-size: 24px; }
.pwa-offline #connectionStatus { min-height: 3em; color: #475569; }