/**
 * 导航栏专用样式
 * 包含导航栏的所有样式和响应式设计
 */

/* 导航栏基础样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
    padding: 0.5rem 0;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

/* 移动端导航栏优化 */
@media (max-width: 991.98px) {
    .navbar-nav {
        text-align: center;
        padding: 1rem 0;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        border-bottom: 1px solid #f8f9fa;
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    
    .navbar-nav .dropdown-menu {
        border: none;
        box-shadow: none;
        background-color: #f8f9fa;
        margin-top: 0;
    }
    
    .navbar-nav .dropdown-item {
        text-align: center;
        padding: 0.5rem 1rem;
    }
    
    /* 移动端右侧按钮优化 */
    .navbar .navbar-buttons {
        justify-content: center;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid #dee2e6;
        width: 100%;
    }
    
    .navbar .navbar-buttons .btn {
        margin: 0 0.25rem;
        font-size: 0.875rem;
        min-width: 80px;
    }
    
    .navbar .navbar-buttons .dropdown-menu {
        min-width: 150px;
    }
    
    /* 汉堡菜单按钮样式 */
    .navbar-toggler {
        border: 1px solid #dee2e6;
        font-size: 1.25rem;
        padding: 0.25rem 0.5rem;
        border-radius: 0.375rem;
    }
    
    .navbar-toggler:focus {
        box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
        border-color: #86b7fe;
    }
    
    .navbar-toggler:hover {
        background-color: rgba(0,0,0,.05);
    }
    
    /* 移动端菜单展开动画 */
    .navbar-collapse {
        transition: all 0.3s ease-in-out;
    }
    
    /* 移动端品牌logo优化 */
    .navbar-brand img {
        margin-right: 0.5rem;
    }
    
    /* 移动端激活状态样式 */
    .navbar-nav .nav-link.active {
        background-color: #0d6efd;
        color: white !important;
        font-weight: 600;
        border-radius: 0.25rem;
        margin: 0.25rem 1rem;
    }
}

/* 大屏幕导航栏优化 */
@media (min-width: 992px) {
    .navbar-nav .nav-link {
        margin: 0 0.5rem;
        border-radius: 0.25rem;
        transition: all 0.3s ease;
        position: relative;
    }
    
    .navbar-nav .nav-link:hover {
        background-color: rgba(0,0,0,.05);
        transform: translateY(-1px);
    }
    
    /* 激活状态样式 */
    .navbar-nav .nav-link.active {
        background-color: #0d6efd;
        color: white !important;
        font-weight: 600;
        box-shadow: 0 2px 4px rgba(13, 110, 253, 0.3);
    }
    
    .navbar-nav .nav-link.active:hover {
        background-color: #0b5ed7;
        transform: translateY(-1px);
    }
}

/* 品牌logo样式 */
.navbar-brand img {
    margin-right: 0.5rem;
}

/* 导航栏加载状态 */
#navbar-container {
    min-height: 70px; /* 防止布局跳动 */
}

/* 加载动画 */
.navbar-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 70px;
    background-color: #f8f9fa;
}

.navbar-loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid #dee2e6;
    border-top: 2px solid #0d6efd;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 确保导航栏在其他内容之上 */
.navbar {
    z-index: 1030;
    position: relative;
}