:root {
    --pwa-safe-bottom: env(safe-area-inset-bottom, 0px);
    --pwa-safe-top: env(safe-area-inset-top, 0px);
    --pwa-banner-shadow: 0 18px 40px rgba(14, 165, 233, 0.18);
    --pwa-banner-border: rgba(125, 211, 252, 0.9);
    --pwa-banner-text: #0f172a;
    --pwa-banner-muted: #64748b;
    --pwa-banner-accent: #0369a1;
}

html.is-pwa-standalone,
body.pwa-standalone {
    min-height: 100dvh;
    overscroll-behavior-y: contain;
}

body.pwa-mobile-browser {
    padding-bottom: calc(104px + var(--pwa-safe-bottom));
}

body.pwa-standalone {
    padding-top: var(--pwa-safe-top);
    padding-bottom: var(--pwa-safe-bottom);
}

body.pwa-standalone .topbar,
body.pwa-standalone header.topbar,
body.pwa-standalone .header,
body.pwa-standalone .controls {
    padding-top: calc(0.75rem + var(--pwa-safe-top));
}

body.pwa-standalone .sidebar-footer,
body.pwa-standalone .app-shell-footer,
body.pwa-standalone footer {
    padding-bottom: calc(1rem + var(--pwa-safe-bottom));
}

.pwa-install-banner {
    position: fixed;
    left: 50%;
    bottom: calc(14px + var(--pwa-safe-bottom));
    transform: translateX(-50%);
    width: min(92vw, 460px);
    z-index: 1200;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--pwa-banner-border);
    border-radius: 20px;
    box-shadow: var(--pwa-banner-shadow);
    color: var(--pwa-banner-text);
    overflow: hidden;
}

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

.pwa-install-banner__body {
    padding: 1rem 1rem 0.9rem;
}

.pwa-install-banner__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #fdf2f8 0%, #e0f2fe 100%);
    color: var(--pwa-banner-accent);
    font-size: 0.72rem;
    font-weight: 700;
}

.pwa-install-banner__title {
    margin-top: 0.75rem;
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.35;
}

.pwa-install-banner__text {
    margin-top: 0.45rem;
    font-size: 0.86rem;
    line-height: 1.55;
    color: var(--pwa-banner-muted);
}

.pwa-install-banner__steps {
    margin-top: 0.7rem;
    padding-left: 1.1rem;
    color: var(--pwa-banner-muted);
    font-size: 0.82rem;
    line-height: 1.55;
}

.pwa-install-banner__actions {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-top: 0.95rem;
}

.pwa-install-banner__button {
    appearance: none;
    border: none;
    border-radius: 12px;
    padding: 0.78rem 1rem;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.18s ease, opacity 0.18s ease, box-shadow 0.18s ease;
}

.pwa-install-banner__button:hover {
    transform: translateY(-1px);
}

.pwa-install-banner__button--primary {
    background: linear-gradient(135deg, #7dd3fc 0%, #38bdf8 50%, #f9a8d4 100%);
    color: #075985;
    box-shadow: 0 10px 22px rgba(14, 165, 233, 0.18);
}

.pwa-install-banner__button--secondary {
    background: #f8fafc;
    color: #475569;
    border: 1px solid rgba(226, 232, 240, 0.9);
}

.pwa-install-banner__dismiss {
    position: absolute;
    top: 0.7rem;
    right: 0.75rem;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 999px;
    background: rgba(248, 250, 252, 0.92);
    color: #64748b;
    font: inherit;
    font-size: 1rem;
    cursor: pointer;
}

.pwa-install-banner__status {
    padding: 0.8rem 1rem 1rem;
    border-top: 1px solid rgba(226, 232, 240, 0.88);
    background: rgba(240, 249, 255, 0.65);
    color: #0f766e;
    font-size: 0.79rem;
    line-height: 1.5;
}

@media (min-width: 921px) and (pointer: fine) {
    .pwa-install-banner {
        display: none !important;
    }
}

@media (max-width: 640px) {
    .pwa-install-banner {
        width: min(94vw, 420px);
        bottom: calc(10px + var(--pwa-safe-bottom));
    }

    .pwa-install-banner__actions {
        flex-direction: column;
    }

    .pwa-install-banner__button {
        width: 100%;
    }
}