.sync-notification {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 999999;
    transform: translateX(400px);
    opacity: 0;
    transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.sync-notification.show {
    opacity: 1;
    transform: translateX(0);
}

/* Content card */
.sync-notification-content {
    background-color: #FFFFFF;
    border-radius: 8px;
    padding: 16px 24px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
        0 4px 6px -2px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 280px;
    border-left: 4px solid #D63A3A;
}

/* Dark mode card */
@media (prefers-color-scheme: dark) {
    .sync-notification-content {
        background-color: #1F2937;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3),
            0 4px 6px -2px rgba(0, 0, 0, 0.2);
        border-left-color: #FF4B4B;
    }
}

/* Success icon */
.sync-notification-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: #D63A3A;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Dark mode icon */
@media (prefers-color-scheme: dark) {
    .sync-notification-icon {
        background-color: #FF4B4B;
    }
}

/* Checkmark */
.sync-notification-icon::after {
    content: '✓';
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 600;
}

/* Message text */
.sync-notification-message {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: #1F2937;
    letter-spacing: 0.01em;
}

/* Dark mode text */
@media (prefers-color-scheme: dark) {
    .sync-notification-message {
        color: #F9FAFB;
    }
}

/* GPU acceleration */
.sync-notification,
.sync-notification-content,
.sync-notification-icon {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}