/* 扁平化导航栏样式 */
.top-bar-flat {
    background: var(--dark-color);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.top-bar-flat .top-bar-info span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.top-bar-flat .social-icon {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.top-bar-flat .social-icon:hover {
    color: var(--primary-light);
    transform: translateY(-1px);
}

.navbar-flat {
    padding: 1rem 0;
    transition: var(--transition);
    background: white !important;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--medium-gray);
}

.navbar-flat-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--dark-color) !important;
    text-decoration: none;
}

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

.navbar-flat-brand .brand-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 扁平化导航链接 */
.nav-link-flat {
    color: var(--dark-gray) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    margin: 0 0.25rem;
}

.nav-link-flat:hover {
    color: var(--primary-color) !important;
    background: rgba(255, 107, 53, 0.05);
}

.nav-link-flat.active {
    color: var(--primary-color) !important;
    font-weight: 600;
    background: rgba(255, 107, 53, 0.1);
}

/* 语言选择器扁平化 */
.language-selector-flat .dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-gray);
    background: white;
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.language-selector-flat .dropdown-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.language-selector-flat .dropdown-menu {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.language-selector-flat .dropdown-item {
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.language-selector-flat .dropdown-item:hover {
    background: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
}

/* 语言选择器样式增强 */
.language-selector-flat .dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-gray);
    background: white;
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.language-selector-flat .dropdown-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(255, 107, 53, 0.05);
}

/* 下拉菜单样式 */
.language-selector-flat .dropdown-menu {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    min-width: 200px;
    border: 1px solid var(--medium-gray);
}

.language-selector-flat .dropdown-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-decoration: none;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.language-selector-flat .dropdown-item:last-child {
    margin-bottom: 0;
}

.language-selector-flat .dropdown-item:hover {
    background: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
}

.language-selector-flat .dropdown-item.active {
    background: rgba(255, 107, 53, 0.15);
    color: var(--primary-color);
    font-weight: 500;
}

/* 国旗图标样式 */
.language-selector-flat .fi {
    width: 20px;
    height: 15px;
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* 默认语言徽章 */
.language-selector-flat .badge.bg-primary {
    background: var(--primary-color) !important;
    font-size: 0.6rem;
    padding: 0.2rem 0.4rem;
}

/* 语言切换按钮中的图标 */
.language-selector-flat .dropdown-toggle .bi-globe {
    color: var(--primary-color);
}

/* 移动端优化 */
@media (max-width: 991.98px) {
    .language-selector-flat {
        margin-top: 1rem;
        margin-left: 0;
        width: 100%;
    }

    .language-selector-flat .dropdown-toggle {
        width: 100%;
        justify-content: center;
        padding: 0.75rem;
    }

    .language-selector-flat .dropdown-menu {
        width: 100%;
        min-width: unset;
    }
}