/* 統一導航列樣式 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
    min-height: 60px !important;
    position: relative;
    display: flex !important;
    align-items: center !important;
}

.navbar-brand {
    font-weight: 600 !important;
    color: #fff !important;
    font-size: 1.25rem !important;
    display: flex !important;
    align-items: center !important;
    padding: 0.75rem 0 !important;
    line-height: 1.25 !important;
    height: auto !important;
    min-height: 48px !important;
    text-decoration: none !important;
}

.navbar-brand i {
    margin-right: 0.5rem !important;
    vertical-align: middle !important;
    width: 16px !important;
    height: 16px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
}

/* Logo 樣式 */
.navbar-logo {
    height: 48px !important;
    width: auto !important;
    max-width: 180px !important;
    object-fit: contain !important;
    vertical-align: middle !important;
}

.navbar-nav .nav-link {
    color: rgba(255,255,255,0.85) !important;
    font-weight: 500 !important;
    padding: 0.75rem 1rem !important;
    transition: all 0.15s ease-in-out;
    border-radius: 0.375rem;
    margin: 0 0.125rem;
    display: flex !important;
    align-items: center !important;
    line-height: 1.5 !important;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
    background-color: rgba(255,255,255,0.1);
}

.navbar-nav .nav-link.active {
    color: #fff !important;
    font-weight: 500 !important;
    background-color: rgba(255,255,255,0.15);
}

.navbar-nav .nav-link i {
    margin-right: 0.5rem !important;
    width: 16px !important;
    text-align: center !important;
    display: inline-block !important;
    vertical-align: middle !important;
}

.navbar-toggler {
    border-color: rgba(255,255,255,0.3);
    padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(255,255,255,0.25);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 下拉選單樣式 */
.dropdown-menu {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
    border-radius: 0.375rem;
    margin-top: 0.25rem;
    min-width: 200px;
    padding: 0.5rem 0;
}

/* 改善下拉選單觸發區域 */
.nav-item.dropdown {
    position: relative;
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    transition: all 0.15s ease-in-out;
    border: none;
    background: none;
    color: #495057;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.dropdown-item:hover {
    background-color: #f8f9fa;
    color: #495057;
    text-decoration: none;
}

.dropdown-item:focus {
    background-color: #e9ecef;
    color: #495057;
    outline: none;
}

.dropdown-item i {
    margin-right: 0.75rem;
    width: 16px;
    text-align: center;
    flex-shrink: 0;
}

.dropdown-divider {
    margin: 0.5rem 0;
}

/* 響應式調整 */
@media (max-width: 991.98px) {
    .navbar-nav {
        padding: 1rem 0;
    }
    
    .navbar-nav .nav-link {
        padding: 0.5rem 1rem !important;
        margin: 0.125rem 0;
    }
    
    /* 手機版導航選單背景 */
    .navbar-collapse {
        background-color: rgba(102, 126, 234, 0.95) !important;
        border-radius: 8px;
        margin-top: 8px;
        padding: 12px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        position: relative;
        z-index: 1000;
    }
    
    /* 確保選單能正常顯示 - 最高優先級！ */
    .navbar-collapse.show {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        height: auto !important;
        overflow: visible !important;
    }
    
    /* 確保選單預設是隱藏的 */
    .navbar-collapse:not(.show) {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        height: 0 !important;
        overflow: hidden !important;
    }
    
    /* 確保 Bootstrap collapse 過渡效果 */
    .navbar-collapse.collapsing {
        display: block !important;
        transition: height 0.35s ease;
        overflow: hidden !important;
    }
    
    /* 強制性顯示規則 - 覆蓋任何其他樣式 */
    #navbarNav.show {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        height: auto !important;
        max-height: none !important;
    }
    
    .navbar-nav .dropdown-menu {
        margin-top: 0;
        margin-left: 1rem;
        border-left: 3px solid rgba(255,255,255,0.2);
        background: rgba(255,255,255,0.05);
        /* 移除 backdrop-filter 避免 Safari 兼容性警告 */
    }
    
    .navbar-nav .dropdown-item {
        color: rgba(255,255,255,0.85) !important;
    }
    
    .navbar-nav .dropdown-item:hover {
        background-color: rgba(255,255,255,0.1);
        color: #fff !important;
    }
}

/* 確保內容不被導航列遮蓋 */
body {
    padding-top: 0;
}

.main-content {
    margin-top: 0;
}

/* 最強制性的對齊設定 - 確保完全一致 */
.navbar,
.navbar * {
    box-sizing: border-box !important;
}

/* 強制所有導航列組件使用相同的基線對齊 */
.navbar .container,
.navbar .navbar-brand,
.navbar .navbar-nav,
.navbar .nav-item,
.navbar .nav-link {
    display: flex !important;
    align-items: center !important;
}

/* 確保品牌標誌在所有頁面都有相同的位置 */
.navbar .navbar-brand {
    margin: 0 !important;
    padding: 0.75rem 0 !important;
    height: 60px !important;
    line-height: 1.25 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
}

/* 強制統一字體對齊 - 覆蓋所有可能的衝突樣式 */
.navbar * {
    box-sizing: border-box !important;
}

.navbar .container {
    display: flex !important;
    align-items: center !important;
    min-height: 60px !important;
    height: 60px !important;
}

.navbar .nav-link,
.navbar .navbar-nav .nav-link,
.navbar-nav .nav-item .nav-link {
    font-weight: 500 !important;
    display: flex !important;
    align-items: center !important;
    line-height: 1.25 !important;
    text-decoration: none !important;
    padding: 0.75rem 1rem !important;
    min-height: 48px !important;
}

.navbar .nav-link.active,
.navbar .navbar-nav .nav-link.active,
.navbar-nav .nav-item .nav-link.active {
    font-weight: 500 !important;
}

.navbar i,
.navbar .nav-link i,
.navbar-brand i {
    vertical-align: middle !important;
    display: inline-block !important;
    margin-right: 0.5rem !important;
    width: 16px !important;
    text-align: center !important;
}

/* 確保所有導航項目垂直對齊 */
.navbar-nav {
    align-items: center !important;
}

.navbar-nav .nav-item {
    display: flex !important;
    align-items: center !important;
}