/* 导航栏样式 */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,.1);
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
}

.navbar-brand img {
    max-height: 40px;
    width: auto;
}

.nav-link {
    color: #666;
    font-size: 1rem;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #333;
    background-color: rgba(0,0,0,.05);
}

.nav-link.active {
    color: #007bff !important;
    background-color: rgba(0,123,255,.1);
}

/* 下拉菜单箭头样式调整 - 强制覆盖Bootstrap默认样式 */
.navbar-nav .nav-link.dropdown-toggle::after {
    display: inline-block !important;
    margin-left: 0.5rem !important;
    margin-top: 0 !important;
    vertical-align: middle !important;
    content: "" !important;
    border-top: 0.3em solid !important;
    border-right: 0.3em solid transparent !important;
    border-bottom: 0 !important;
    border-left: 0.3em solid transparent !important;
    float: none !important;
    position: static !important;
}

.navbar-nav .nav-link.dropdown-toggle:empty::after {
    margin-left: 0 !important;
}

/* 移除Bootstrap可能添加的其他样式 */
.navbar-nav .dropdown-toggle::before {
    display: none !important;
}

.search-box {
    display: flex;
    gap: 0.5rem;
    width: 100%;
}

.search-box .form-control {
    border-radius: 2rem;
    padding-left: 1rem;
    border: 1px solid rgba(226,232,240,0.8);
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.search-box .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37,99,235,0.15);
    background: white;
}

.search-box .btn {
    border-radius: 2rem;
    padding: 0.375rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.search-box .btn:hover {
    transform: translateY(-2px);
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        padding: 1rem 0;
    }

    .nav-link {
        padding: 0.75rem 1rem !important;
        margin: 0.25rem 0;
    }

    form.d-flex {
        margin-left: 0 !important;
        margin-top: 0.5rem;
    }

    .search-box {
        max-width: 100%;
    }

    /* 确保在所有屏幕尺寸下箭头都在右侧 */
    .navbar-nav .nav-link.dropdown-toggle::after {
        display: inline-block !important;
        margin-left: 0.5rem !important;
        margin-top: 0 !important;
        float: none !important;
        vertical-align: middle !important;
    }
}

@media (max-width: 768px) {
    .search-box {
        margin-top: 1rem;
        max-width: 100%;
    }
}

/* 友情链接样式 */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.friend-link {
    color: #666;
    text-decoration: none;
    padding: 5px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.friend-link:hover {
    color: #007bff;
    border-color: #007bff;
    text-decoration: none;
    background-color: #f8f9fa;
}