/**
 * PWA Install Banner — پیشنهاد نصب وب‌اپ
 * هم‌خوان با برند تیل + دارک‌مود + سازگار با نوار پایینی رژیم
 */

.ai-pwa-banner {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translate(-50%, 120%);
    width: min(430px, calc(100% - 24px));
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(2, 6, 23, 0.22);
    padding: 13px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 99970;
    direction: rtl;
    font-family: Vazir, Tahoma, sans-serif;
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.3, 0.64, 1), opacity 0.35s ease;
}

.ai-pwa-banner.show {
    transform: translate(-50%, 0);
    opacity: 1;
}

/* بالای نوار پایینی رژیم (اگر در صفحه باشد) */
.ai-pwa-banner.above-bnav {
    bottom: calc(84px + env(safe-area-inset-bottom, 0px));
}

/* آیکون اپ */
.ai-pwa-banner-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 133, 122, 0.25);
}

/* متن */
.ai-pwa-banner-text {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ai-pwa-banner-text strong {
    font-size: 0.92rem;
    font-weight: 800;
    color: #1e293b;
}

.ai-pwa-banner-text span {
    font-size: 0.79rem;
    color: #64748b;
    line-height: 1.7;
}

.ai-pwa-banner-text .ai-pwa-share {
    width: 14px;
    height: 14px;
    vertical-align: -2px;
    color: #00857a;
}

/* دکمه نصب */
.ai-pwa-install-btn {
    background: linear-gradient(135deg, #00a693, #00857a);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 9px 20px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    flex-shrink: 0;
    box-shadow: 0 3px 10px rgba(0, 133, 122, 0.3);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.ai-pwa-install-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 14px rgba(0, 133, 122, 0.4);
}

.ai-pwa-install-btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

/* دکمه بستن */
.ai-pwa-close {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 1.3rem;
    line-height: 1;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 8px;
    flex-shrink: 0;
    transition: color 0.15s ease, background 0.15s ease;
}

.ai-pwa-close:hover {
    color: #475569;
    background: #f1f5f9;
}

/* ── موبایل ── */
@media (max-width: 480px) {
    .ai-pwa-banner {
        width: calc(100% - 20px);
        padding: 12px;
        gap: 10px;
    }
    .ai-pwa-banner-icon { width: 42px; height: 42px; }
    .ai-pwa-banner-text strong { font-size: 0.88rem; }
    .ai-pwa-banner-text span { font-size: 0.75rem; }
    .ai-pwa-install-btn { padding: 8px 16px; font-size: 0.8rem; }
}

/* ── دارک مود ── */
body.dark-mode .ai-pwa-banner {
    background: var(--dm-surface, #111a2c);
    border-color: rgba(255, 255, 255, 0.09);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

body.dark-mode .ai-pwa-banner-text strong { color: #eef3fa; }
body.dark-mode .ai-pwa-banner-text span { color: #a9bad0; }
body.dark-mode .ai-pwa-banner-text .ai-pwa-share { color: #5eead4; }
body.dark-mode .ai-pwa-close { color: #64748b; }
body.dark-mode .ai-pwa-close:hover { color: #cbd5e1; background: rgba(255,255,255,.06); }