:root {
    --mehrad-pwa-maroon: #7a1038;
    --mehrad-pwa-maroon-dark: #4c0519;
    --mehrad-pwa-gold: #c8a45d;
}

.mehrad-pwa-install {
    position: fixed;
    left: max(16px, env(safe-area-inset-left));
    bottom: max(16px, env(safe-area-inset-bottom));
    z-index: 2147483000;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 16px;
    color: #fff;
    background: linear-gradient(135deg, var(--mehrad-pwa-maroon-dark), var(--mehrad-pwa-maroon));
    box-shadow: 0 14px 35px rgba(76, 5, 25, .3);
    font: 800 14px/1.2 Vazir, IRANSans, Tahoma, sans-serif;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.mehrad-pwa-install::before {
    content: "↓";
    display: grid;
    place-items: center;
    width: 25px;
    height: 25px;
    border-radius: 9px;
    color: var(--mehrad-pwa-maroon-dark);
    background: #fff;
    font-size: 18px;
}

.mehrad-pwa-install:hover,
.mehrad-pwa-install:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 18px 42px rgba(76, 5, 25, .38);
}

.mehrad-pwa-install[hidden] { display: none !important; }

.mehrad-pwa-dialog {
    position: fixed;
    inset: 0;
    z-index: 2147483640;
    display: grid;
    place-items: end center;
    padding: 18px;
    background: rgba(15, 23, 42, .58);
    backdrop-filter: blur(5px);
}

.mehrad-pwa-dialog[hidden] { display: none; }

.mehrad-pwa-dialog__card {
    width: min(100%, 460px);
    padding: 24px;
    border-radius: 24px;
    direction: rtl;
    color: #172033;
    background: #fff;
    box-shadow: 0 24px 70px rgba(0, 0, 0, .28);
    font-family: Vazir, IRANSans, Tahoma, sans-serif;
}

.mehrad-pwa-dialog__card h2 { margin: 0 0 10px; font-size: 20px; }
.mehrad-pwa-dialog__card p { margin: 0 0 16px; color: #596579; line-height: 1.9; }
.mehrad-pwa-dialog__card ol { margin: 0 0 20px; padding-right: 22px; line-height: 2; }
.mehrad-pwa-dialog__actions { display: flex; gap: 10px; }
.mehrad-pwa-dialog__actions a,
.mehrad-pwa-dialog__actions button {
    flex: 1;
    min-height: 44px;
    border: 0;
    border-radius: 13px;
    font: 800 13px Vazir, IRANSans, Tahoma, sans-serif;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}
.mehrad-pwa-dialog__actions a { display: grid; place-items: center; color: #fff; background: var(--mehrad-pwa-maroon); }
.mehrad-pwa-dialog__actions button { color: #5f6b7d; background: #f1f5f9; }

body.mehrad-standalone .mehrad-pwa-install,
body.mehrad-native-android .mehrad-pwa-install { display: none !important; }

@media (max-width: 520px) {
    .mehrad-pwa-install { left: 12px; right: auto; bottom: max(12px, env(safe-area-inset-bottom)); padding: 0 14px; }
    .mehrad-pwa-dialog { padding: 10px; }
    .mehrad-pwa-dialog__card { border-radius: 22px; padding: 20px; }
}

@media print {
    .mehrad-pwa-install,
    .mehrad-pwa-dialog { display: none !important; }
}