/* UNC — Bouton installation PWA */
.pwa-install-banner {
    position: fixed;
    top: calc(1rem + env(safe-area-inset-top, 0px));
    right: calc(1rem + env(safe-area-inset-right, 0px));
    left: auto;
    bottom: auto;
    transform: translateY(calc(-120% - env(safe-area-inset-top, 0px)));
    z-index: 9990;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem 0.75rem 0.85rem;
    background: var(--unc-navy, #0F1F3D);
    color: #fff;
    border-radius: 14px;
    box-shadow: 0 12px 40px rgba(15, 31, 61, 0.35);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: min(360px, calc(100vw - 2rem));
    pointer-events: auto;
}

.pwa-install-banner.visible {
    transform: translateY(0);
}

.pwa-install-banner.hidden {
    display: none;
}

.pwa-install-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    flex-shrink: 0;
}

.pwa-install-text {
    flex: 1;
    min-width: 0;
}

.pwa-install-text strong {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
}

.pwa-install-text span {
    font-size: 0.75rem;
    opacity: 0.75;
}

.pwa-install-btn {
    padding: 0.55rem 1rem;
    border: none;
    border-radius: 10px;
    background: var(--unc-blue, #2C5CA8);
    color: #fff;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s ease;
    flex-shrink: 0;
}

.pwa-install-btn:hover { background: #234A88; }

.pwa-install-dismiss {
    background: none;
    border: none;
    color: rgba(255,255,255,0.6);
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    padding: 0.25rem;
    flex-shrink: 0;
}

.pwa-update-toast {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    z-index: 10001;
    padding: 0.85rem 1.15rem;
    background: var(--unc-bg-elevated, #fff);
    border: 1px solid var(--unc-border, #E8EDF4);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(15,31,61,0.12);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: fadeSlideUp 0.3s ease;
}

.pwa-update-toast button {
    padding: 0.4rem 0.85rem;
    border: none;
    border-radius: 8px;
    background: var(--unc-blue, #2C5CA8);
    color: #fff;
    font-weight: 600;
    font-size: 0.8125rem;
    cursor: pointer;
}

@media (max-width: 640px) {
    .pwa-install-banner {
        top: calc(0.75rem + env(safe-area-inset-top, 0px));
        right: calc(0.75rem + env(safe-area-inset-right, 0px));
        left: calc(0.75rem + env(safe-area-inset-left, 0px));
        max-width: none;
        flex-wrap: wrap;
    }

    .pwa-install-text {
        flex: 1 1 calc(100% - 56px);
    }

    .pwa-install-btn {
        flex: 1;
    }
}

@media (display-mode: standalone) {
    .pwa-install-banner { display: none !important; }
    .header-premium { padding-top: env(safe-area-inset-top); }
    .sidebar-premium { padding-top: env(safe-area-inset-top); }
}

.unc-offline-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10001;
    padding: 0.55rem 1rem;
    padding-top: calc(0.55rem + env(safe-area-inset-top, 0px));
    background: #8a4b00;
    color: #fff;
    font-size: 0.8125rem;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}