/* ════════════════════════════════════════════════
   PWA Install Prompt Banner
   ════════════════════════════════════════════════ */

.pwa-install-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(120px);
    z-index: 9999;
    max-width: 440px;
    width: calc(100% - 32px);
    background: linear-gradient(135deg, rgba(15, 15, 30, 0.97), rgba(25, 20, 50, 0.97));
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 20px;
    padding: 20px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.6),
        0 0 40px rgba(139, 92, 246, 0.12);
    backdrop-filter: blur(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
    pointer-events: none;
}

.pwa-install-banner.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* ── Layout ── */
.pwa-banner-body {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.pwa-banner-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), #6d28d9);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(109, 40, 217, 0.35);
    position: relative;
    overflow: hidden;
}
.pwa-banner-icon svg { width: 24px; height: 24px; color: white; }

.pwa-banner-content {
    flex: 1;
    min-width: 0;
}

.pwa-banner-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 3px;
    line-height: 1.3;
}

.pwa-banner-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 0;
}

/* ── Close button ── */
.pwa-banner-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 50%;
    color: var(--text-muted);
    font-size: 11px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.pwa-banner-close:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
}

/* ── Actions ── */
.pwa-banner-actions {
    display: flex;
    gap: 8px;
    margin-top: 14px;
    position: relative;
    z-index: 2;
}

.pwa-install-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border: none;
    border-radius: 12px;
    color: white;
    font-family: var(--font);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 16px rgba(109, 40, 217, 0.4);
}
.pwa-install-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(109, 40, 217, 0.55);
}
.pwa-install-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.pwa-install-btn svg { flex-shrink: 0; }

.pwa-later-btn {
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}
.pwa-later-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

/* ── Shimmer animation on icon ── */
.pwa-banner-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
    background-size: 200% 200%;
    animation: pwaShimmer 3s ease infinite;
}

@keyframes pwaShimmer {
    0%, 100% { background-position: 200% 200%; }
    50% { background-position: 0% 0%; }
}

/* ── Mobile adjustments ── */
@media (max-width: 640px) {
    .pwa-install-banner {
        bottom: 80px; /* Above mobile bottom nav */
        max-width: 100%;
        border-radius: 16px;
    }
}