.field-wrap { 
	position: relative; 
	display: inline-block; 
	vertical-align: middle; 
}

.field-wrap input { 
	padding-right: 35px; /* 預留眼睛空間 */
	box-sizing: border-box; 
}

/* 自家命名，避免吃到站上 .eye-toggle 的規則 */
.fb-eye-toggle {
    position: absolute; 
    right: 6px; 
    top: 50%; 
    transform: translateY(-50%);
    width: 20px; 
    height: 20px; 
    cursor: pointer; 
    user-select: none;/* 有值才顯示 */
    z-index: 3; /* 浮在輸入框上 */
}

.fb-eye-toggle img { 
	width: 100%; 
	height: 100%; 
	display: block; 
}

/* 顯示/隱藏用專屬 class，強制權重避免外部覆蓋 */
.fb-eye-toggle.is-hidden  { 
	display: none !important; 
}

.fb-eye-toggle.is-visible { 
	display: inline-block !important; 
}