/* 基本樣式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 999;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 15px 50px;
    row-gap: 20px;
    gap: 30px;
    flex-wrap: wrap;
}

.logo img {
    width: 250px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: all 0.3s;
}

/* 滑鼠滑過或點選主選單 */
.nav-link:hover,
.nav-link:active,
.nav-link.active,
.nav-item.dropdown:hover>.nav-link {
    color: #fff;
    background-color: #00a3ad;
}

.nav-link:hover .dropdown-toggle-icon,
.nav-link:active .dropdown-toggle-icon,
.nav-link.active .dropdown-toggle-icon,
.nav-item.dropdown:hover .dropdown-toggle-icon {
    color: #fff; 
}


.dropdown-toggle-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.dropdown-toggle-icon {
    cursor: pointer;
    font-size: 14px;
    color: #333;
    transition: color 0.3s;
}

/* 下拉選單動畫 */
.nav-item.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
    z-index: 1000;
    min-width: 10em;
    white-space: nowrap;
    opacity: 0;

}

/* hover 時觸發展開動畫 */
.nav-item.dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
    transition: opacity 0.6s ease;
}

.dropdown-menu li a {
    padding: 10px 15px;
    text-decoration: none;
    color: #333;
    display: block;
}

.dropdown-menu li a:hover {
    background-color: #00a3ad;
    color: #fff;
}
/* 手機的下拉式選單打開 */
.dropdown.open > .dropdown-menu {
  display: block;
}

/* @media (min-width: 1440px){
    .navbar{
        padding-left: 150px;
    }
} */

/* --- 小於 1440px：手機版樣式 --- */
@media (max-width: 1440px) {
    .navbar{
        justify-content: space-between;
        padding: 10px 30px;
    }
    .menu-toggle {
        display: block;
    }
    .nav-item {
        width: 100%;
    }
    .nav-link {
        padding: 10px 20px;
        width: 100%;
    }
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: 10px;
        gap: 10px;
    }

    .nav-menu.active {
        display: flex;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        padding-left: 20px;
    }
    .dropdown-menu.show {
        /* 給一個足夠大的值即可 */
        max-height: 500px;
        opacity: 1;
        padding: 15px 20px;
    }
    .dropdown-toggle-link {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        /* 撐滿整個 li */
        padding: 15px 20px;
        /* 可調整 padding 看設計 */
        box-sizing: border-box;
        /* 確保 padding 不超出寬度 */
    }
}

/* --- 小於 400px：手機版樣式 --- */
@media (max-width: 500px) {
    .logo img {
        width: 180px;
    }
}