/* ╔══════════════════════════════════════════════════════════╗
   ║  LibExplorer — CSS PWA Banners & Offline (Phase 8)       ║
   ╚══════════════════════════════════════════════════════════╝ */

/* ── Bannière mise à jour ────────────────────────────────────────────────────── */
.pwa-update-banner {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 9000;
    background: #0d0d1a;
    border-bottom: 2px solid var(--color-accent);
    padding: .75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    transform: translateY(-100%);
    transition: transform .35s cubic-bezier(.16,1,.3,1);
    box-shadow: 0 4px 20px rgba(0,0,0,.4);
}
.pwa-update-banner.visible { transform: translateY(0); }

.pwa-update-banner__body {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: var(--text-sm);
    font-weight: 600;
    color: white;
}

.pwa-update-banner__actions {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-shrink: 0;
}

/* ── Bannière installation (Android/Chrome) ──────────────────────────────────── */
.pwa-install-banner {
    position: fixed;
    bottom: calc(env(safe-area-inset-bottom) + 4.5rem);
    left: 1rem; right: 1rem;
    z-index: 9000;
    background: #0d0d1a;
    border: 1px solid rgba(255,45,107,.25);
    border-radius: var(--radius-xl);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 8px 32px rgba(0,0,0,.6);
    transform: translateY(120%);
    transition: transform .4s cubic-bezier(.16,1,.3,1);
    max-width: 480px;
    margin: 0 auto;
}
.pwa-install-banner.visible { transform: translateY(0); }

.pwa-install-banner__icon img {
    border-radius: var(--radius-md);
    display: block;
}

.pwa-install-banner__body {
    flex: 1;
    min-width: 0;
}
.pwa-install-banner__body strong {
    display: block;
    font-size: var(--text-sm);
    font-weight: 700;
    color: white;
    margin-bottom: .2rem;
}
.pwa-install-banner__body span {
    font-size: .75rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.pwa-install-banner__actions {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-shrink: 0;
}

/* ── Bannière iOS ────────────────────────────────────────────────────────────── */
.pwa-ios-banner {
    position: fixed;
    bottom: calc(env(safe-area-inset-bottom) + 1rem);
    left: 1rem; right: 1rem;
    z-index: 9000;
    background: rgba(13,13,26,.96);
    border: 1px solid rgba(255,45,107,.2);
    border-radius: var(--radius-xl);
    padding: 1.25rem 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .875rem;
    text-align: center;
    box-shadow: 0 -4px 32px rgba(0,0,0,.5);
    backdrop-filter: blur(12px);
    transform: translateY(110%);
    transition: transform .4s cubic-bezier(.16,1,.3,1);
    max-width: 400px;
    margin: 0 auto;
}
.pwa-ios-banner.visible { transform: translateY(0); }

/* Flèche pointant vers le bas (vers la barre Safari) */
.pwa-ios-banner::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0; height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid rgba(255,45,107,.2);
}

.pwa-ios-banner__close {
    position: absolute;
    top: .75rem; right: .75rem;
    background: none; border: none;
    color: var(--color-text-subtle);
    cursor: pointer; font-size: .85rem;
    padding: .25rem;
    transition: color .15s;
}
.pwa-ios-banner__close:hover { color: white; }

.pwa-ios-banner__icon img { border-radius: var(--radius-md); }

.pwa-ios-banner__body strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 800;
    color: white;
    margin-bottom: .35rem;
}
.pwa-ios-banner__body p {
    font-size: .8rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin: 0;
}

.pwa-ios-banner__share {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px; height: 24px;
    background: #007AFF;
    border-radius: 5px;
    color: white;
    font-size: .7rem;
    vertical-align: middle;
    margin: 0 .2rem;
}

/* ── Bannière hors-ligne ─────────────────────────────────────────────────────── */
.pwa-offline-banner {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 8999;
    background: #1a0a0a;
    border-bottom: 2px solid #f87171;
    padding: .6rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .75rem;
    font-size: .8rem;
    font-weight: 600;
    color: #f87171;
    transform: translateY(-100%);
    transition: transform .3s ease;
}
.pwa-offline-banner.visible { transform: translateY(0); }
.pwa-offline-banner i { font-size: 1rem; }

/* Quand hors-ligne : griser les boutons d'action nécessitant le réseau */
.is-offline .requires-network {
    opacity: .4;
    pointer-events: none;
    cursor: not-allowed;
}

/* ── Bouton d'installation dans la navbar ────────────────────────────────────── */
#pwaInstallBtn {
    display: none; /* affiché via JS uniquement si disponible */
    align-items: center;
    gap: .45rem;
    padding: .45rem 1rem;
    background: rgba(255,215,0,.1);
    border: 1px solid rgba(255,215,0,.3);
    border-radius: var(--radius-full);
    color: var(--color-accent);
    font-size: .75rem;
    font-weight: 700;
    cursor: pointer;
    transition: all .15s;
    text-decoration: none;
    flex-shrink: 0;
}
#pwaInstallBtn:hover {
    background: rgba(255,215,0,.18);
    transform: translateY(-1px);
}

/* ── Toasts ──────────────────────────────────────────────────────────────────── */
.toast {
    padding: .75rem 1.25rem;
    background: #0d0d1a;
    border-radius: var(--radius-xl);
    font-size: .85rem;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(0,0,0,.4);
    opacity: 0;
    transform: translateX(24px);
    transition: opacity .25s, transform .25s;
    pointer-events: none;
}
.toast.visible { opacity: 1; transform: translateX(0); }
.toast--success { color: #4ade80; border: 1px solid rgba(74,222,128,.3); }
.toast--info    { color: #38bdf8; border: 1px solid rgba(56,189,248,.3); }
.toast--error   { color: #f87171; border: 1px solid rgba(248,113,113,.3); }

/* ── Page offline ────────────────────────────────────────────────────────────── */
.offline-page {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    padding: 2rem;
    text-align: center;
}

.offline-page__icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    animation: pulse-offline 2s ease-in-out infinite;
}

@keyframes pulse-offline {
    0%,100% { opacity: 1; transform: scale(1); }
    50%      { opacity: .5; transform: scale(.95); }
}

.offline-page__title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 900;
    color: white;
    margin-bottom: .75rem;
}

.offline-page__sub {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    max-width: 360px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.offline-page__cached-label {
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--color-text-subtle);
    margin-bottom: 1rem;
}