/* App guard UI: update prompt + diagnostics (kept separate so the CSP can stay style-src 'self'). */
.sw-update{position:fixed;left:50%;bottom:calc(1rem + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:1000;display:flex;gap:.5rem;align-items:center;padding:.5rem .75rem;border-radius:.75rem;background:#1f2937;color:#fff;box-shadow:0 4px 16px rgba(0,0,0,.3);font:inherit;max-width:calc(100vw - 2rem)}
.sw-update[hidden]{display:none}
.sw-update button,.diag-dialog button{font:inherit;padding:.4rem .8rem;border-radius:.5rem;border:1px solid currentColor;background:transparent;color:inherit;cursor:pointer;min-height:2.25rem}
.sw-update .sw-update-btn{background:#fff;color:#111827;border-color:#fff;font-weight:600}
.diag-link{text-align:center;margin:1rem 0;font-size:.8rem}
.diag-link button{background:none;border:0;padding:.5rem;color:inherit;opacity:.7;text-decoration:underline;cursor:pointer;font:inherit;min-height:2.25rem}
.diag-dialog{max-width:min(36rem,calc(100vw - 2rem));border-radius:.75rem;border:1px solid #9ca3af;background:Canvas;color:CanvasText}
.diag-dialog::backdrop{background:rgba(0,0,0,.45)}
.diag-info{display:grid;grid-template-columns:max-content 1fr;gap:.25rem .75rem;margin:0}
.diag-info dt{font-weight:600}.diag-info dd{margin:0;overflow-wrap:anywhere}
.diag-errors{max-height:12rem;overflow:auto;font-size:.8rem;padding-left:1.25rem;overflow-wrap:anywhere}
.diag-actions{display:flex;gap:.5rem;flex-wrap:wrap}
@media print{.sw-update,.diag-link{display:none}}