/* PWA install button + update banner.
   Hidden by default; shown via JS when beforeinstallprompt fires
   (install) or when a new SW is waiting (update). */

.kkim-pwa-fab {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--primary, #d4af37);
    color: var(--primary-foreground, #0a0e1e);
    border: none;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.kkim-pwa-fab:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px rgba(0, 0, 0, 0.4);
}
.kkim-pwa-fab:focus-visible {
    outline: 2px solid var(--primary, #d4af37);
    outline-offset: 3px;
}
.kkim-pwa-fab[hidden] {
    display: none;
}

.kkim-update-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    background: var(--primary, #d4af37);
    color: var(--primary-foreground, #0a0e1e);
    padding: 0.75rem 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.kkim-update-banner[hidden] {
    display: none;
}
.kkim-update-banner button {
    background: var(--primary-foreground, #0a0e1e);
    color: var(--primary, #d4af37);
    border: none;
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s;
}
.kkim-update-banner button:hover {
    opacity: 0.85;
}
.kkim-update-banner button:focus-visible {
    outline: 2px solid var(--primary-foreground, #0a0e1e);
    outline-offset: 2px;
}