.web-app-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 99999;
    background: #ffffff;
    border-top: 1px solid #E5E7EB;
    box-shadow: 0 -4px 12px rgba(0,0,0,0.08);
    padding: 12px 16px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom));
    animation: webAppSlideUp 0.4s ease-out;
}

@keyframes webAppSlideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.web-app-banner-content {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 600px;
    margin: 0 auto;
}

.web-app-banner-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
}

.web-app-banner-text {
    flex: 1;
    min-width: 0;
}

.web-app-banner-text strong {
    display: block;
    font-size: 14px;
    color: #1b1c1c;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.3;
}

.web-app-banner-text span {
    display: block;
    font-size: 12px;
    color: #6b7280;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.web-app-banner-btn {
    flex-shrink: 0;
    background: #003366;
    color: white;
    border: none;
    border-radius: 20px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    cursor: pointer;
    transition: background 0.2s;
}

.web-app-banner-btn:hover {
    background: #001e40;
}

.web-app-banner-dismiss {
    flex-shrink: 0;
    background: none;
    border: none;
    font-size: 16px;
    color: #9ca3af;
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
}

.web-app-banner-dismiss:hover {
    color: #4b5563;
}